- Open Access
Ethnoichthyology of the indigenous Truká people, Northeast Brazil
© Santos and Nóbrega Alves. 2016
Received: 19 November 2015
Accepted: 23 December 2015
Published: 6 January 2016
The Erratum to this article has been published in Journal of Ethnobiology and Ethnomedicine 2016 12:6
Historically, fishing is an important activity for riverine communities established along the São Francisco River, including indigenous communities. In the present study, we researched fishing activities in two villages of the Truká ethnic group, both located in the State of Pernambuco along the sub-middle section of the São Francisco River, Northeast Brazil. We recorded the richness and uses of the fished species and the ecological knowledge on these species, the fishing techniques employed and the perception of the indigenous people regarding current environmental impacts on the São Francisco River that influence local fishing.
The information was obtained through interviews with 33 Truká fishers (27 men and six women), including 17 interviewees from Central Village (Cabrobó) and 16 from Tapera Village (Orocó).
Using five fishing techniques, the interviewees caught 25 fish species, including 21 native and four exotic species. All species are used as food, and two species are used in traditional Truká medicine. The interviewees revealed that fishing currently has less importance in their subsistence. They indicated that this situation is occurring because of several factors, such as the introduction of exotic species, pollution and urbanization, that have impacted the São Francisco River, resulting in a decline of fishing resources. Nevertheless, we found that the indigenous people who are still fishing have a broad knowledge of the habitat and ecology of the target fishing.
Although fishing is declining in importance among the Truká, we found that the individuals who are still practicing this activity have a broad knowledge about the habitat and ecology of the target species and apply that knowledge to fishing methods. Knowledge about the ecology of the species and the environmental impacts that have affected them can support basic research on local fish populations and research investigating the environmental impacts, resource management and sustainable exploitation of fisheries resources.
Fishing is one of the oldest activities in human history  and has continued to play an essential role in the subsistence, economy and culture of many human communities worldwide [2–8]. In Brazil, home to a large diversity of coastal and continental aquatic ecosystems, fishing activities are employed by indigenous communities and by different traditional communities that were formed during the European colonization, persisting in many regions of the country to the present as an activity of great social and cultural importance .
Artisanal fishers are recognized for having developed an elaborate knowledge about the biological resources exploited, which includes aspects of ecology, taxonomy and ethology [10–14]. This knowledge has been examined through ethnozoological studies, which indicate that information from fishers can support academic research on the biology of the exploited species or research directed toward the development of management and sustainability plans for the exploited resources [15–23].
Considering the importance of fishing in Brazil, many ethnoichthyological studies have been conducted in the country, especially in the riverine fishing communities of the Amazon, in the Caiçara communities of the south-eastern coast and in the estuarine-marine areas of the northeast . In reservoirs and rivers within the Caatinga (Brazilian savanna) morphoclimatic domain, a few studies have been conducted on the exploitation of fishing resources by artisanal fishing communities. Usually, these studies have focused on the fishers from the banks of the São Francisco River [24–27].
Ethnoichthyological studies involving indigenous populations of the Brazilian semi-arid regions are rare, although many indigenous ethnic groups (i.e., the Tuxá, Pankararu, Pankararé, Kantaruré, Xucuru Kariri, Atikum and Truká) have practiced fishing for many years. Fishing has historical importance, especially for the ethnic groups settled along the São Francisco River, where, naturally, they had access to the river wildlife, which made fishing one of the main sources of protein for these communities . This scenario, however, has undergone profound changes in recent decades with the damming of the São Francisco River in many areas, leading to hydrological alterations and flooding of the territories of these indigenous populations. Thus, fishing, once an activity of paramount importance for these populations, has lost its leading role.
This study is the first ethnoichthyological research conducted with the Truká ethnic group inhabiting the semi-arid region of the State of Pernambuco. This is a descriptive study that sought to 1) assess the richness of the fished species and the fishing techniques employed by these people, 2) investigate whether fishing remains an important activity as a source of protein, and 3) analyse the local knowledge on the fished species that are important in the organization of fishing activities. Moreover, the present study also considered the perception of the indigenous people regarding the alteration in fishing practices resulting from changes made in recent years in the São Francisco River with the construction of local hydroelectric plants.
Legal and ethical aspects
Considering the ethical aspects, before each interview, the purposes of this present study were explained and permission requested to register the information through the presentation and signing of the Informed Consent Form (ICF) and the authorization of image use form. The authorization to access the traditional knowledge associated to the genetic heritage was granted by the Research Ethic Committee (Legal view N°723.750), of the National Historic and Artistic Heritage Institute (N° 013/2013 legal process n° 01450.010527/2013-30), and the clearance to ingress in Indian territories was granted by the National Indian Foundation, supported the Lower São Francisco Regional Coordination.
The data were collected from July 2013 to February 2014, with an effort of 4 days per month in each village surveyed, totalling 32 days for each village over the course of the study. The information was obtained through interviews with 33 Truká fishers (27 men and six women), including 17 interviewees from Aldeia Mãe (Cabrobó) and 16 from Tapera Village (Orocó).
A non-probabilistic purposive sampling method was applied to select the interviewees  using the snowball technique . Indigenous fishermen and fisherwomen living in the villages, who were 18 years of age or older, were interviewed. Information on traditional ecological knowledge and the local use of the ichthyofauna was obtained through semi-structured questionnaires using free interviews and informal conversations [32, 34]. Questionnaires contained questions about the fish species caught, fish uses, capture methods and habitat of the fished species.
Specimens were identified through consultation with experts, through examination of specimens acquired directly from the fishers and through photographs taken during the interviews. All specimens were deposited in the Zoology Museum, Fish Division, Feira de Santana State University (Universidade Estadual de Feira de Santana-UEFS). Questionnaires, photographs, and recorded interviews were deposited in the Opará Indigenous Training and Research Centre (Centro de Formação e Pesquisa Indígena Opará), Bahia State University (Universidade do Estado da Bahia-UNEB).
Results and discussion
Fish species used by the Truká people from the Cabrobó (Aldeia Mãe) and Orocó villages
Family/Local species name
Scientific species name
No. of citations (villages)
Plagioscion squamosissimus Heckel, 1840
Astronotus ocellatus Agassiz, 1831
Cichla ocellaris Bloch & Schneider, 1801
Colossoma macropomum Cuvier, 1818
Serrasalmus brandtii Reinhardt, 1874
Pygocentrus piraya Cuvier, 1819
Metynnis maculatus Kner, 1860
Myleus micans Reinhardt, 1874
Salminus cf. brasiliensis Cuvier, 1817
Hoplias malabaricus Bloch, 1794
Brycon reinhardtii Lütken, 1875
Leporinus cf piau Fowler, 1941
Leporinus obtusidens Valenciennes, 1836
Prochilodus argenteus Agassiz,1829
Hypostomus margaritifer Regan, 1808
Pterygoplichthys etentaculatus Spix & Agassiz, 1829
Hypostomus macrops Eigenmann & Eigenmann, 1888
Rhinelepis aspera Spix & Agassiz, 1829
Conorhynchos conirostris Valenciennes, 1840
Pseudoplatystoma coruscans Spix & Agassiz, 1829
Lophiosilurus alexandri Steindachner, 1877
Parauchenipterus galeatus Linnaeus, 1766
Pimelodella cf. vittata Lütken, 1874
Pachyurus francisci Cuvier, 1830
Gymnotus cf. carapo Linnaeus, 1758
Considering the species richness recorded for the São Francisco River basin, which totals 244 fish species, we found that 10.3 % (n = 25) of these species are recognized and used by the Truká people who inhabit the villages surveyed. A total of 21 (84 %) fish species cited by interviewees as being currently fished are native, which highlights the Truká preference for these species compared to exotic species that have been introduced in the São Francisco River Basin and, according to Sato and Godinho , have established populations in the river. Those authors highlight the following species among the fish introduced in the area: peacock bass (Cichla spp.), South American silver croaker (Plagioscion squamosissimus), carp (Cyprinus carpio), African catfish (Clarias gariepinus), tambaqui (Colossoma macropomum), and tilapia (Oreochromis sp. and Tilapia sp.), three of which were mentioned by the interviewees. The production of some of these species has been encouraged among riverine inhabitants of the São Francisco River, including in the area surveyed. The São Francisco Valley Development Company (Companhia de Desenvolvimento do Vale do São Francisco-CODEVASF) provided access to technology for the farming of tambaqui (Colossoma macropomum) in the Cabrobó village.
The four exotic species cited by respondents were recently introduced (from the 70s onwards) [35–37], and they represent only a small fraction of part of the ichthyofauna locally used by the Truká people. Fish farming has increased in recent years in the sub-middle section of the São Francisco River, made possible by the existence of large dam reservoirs. However, aquaculture is not part of the traditional culture of indigenous fishers and involves skills and significance far from those associated with traditional fishing . The nature of this situation is such that artisanal fishing in the sub-middle section of the São Francisco River, where fish has always constituted an important nutritional component for local human populations, has been declining each year.
For the interviewed fishers, food is the main objective of fishing. However, they claim that fish are currently used as a complimentary protein source, in contrast with a few decades ago, when fish accounted for a significant part of the diet in the villages surveyed. Such evidence reinforces observations reported in previous studies, which indicate that currently, the protein base of the Truká diet is composed of meat from domestic vertebrates, including cattle, goats, sheep and pigs . This information suggests that there has been a change in the main protein sources of the Truká Indians. According to Aspelin and Santos , fishing was a very common practice among the Truká people. However, this activity has declined in importance as a result of fish shortages and the changes experienced by this ethnic group over the years through constant contact with non-Indians . When there is a surplus in the fishing, the fishes are commercialized within the village among local indigenous families.
Changes in the diets of human populations resulting from factors such as urbanization and contact with nonindigenous populations have been recorded worldwide [40, 41]. Our results show that this situation has occurred among the Truká and possibly among other indigenous and nonindigenous communities who settled along the São Francisco River, which was one of the main sources of fisheries resources that supplied the fish markets of the northeast and southeast of Brazil .
In addition to the importance of fish as food, we recorded the use of fish in traditional Truká medicine. In Brazil, the use of animals, including fish, as medicinal resources is a fairly widespread and ancient phenomenon. Fish are among the most frequently used vertebrates for medicinal purposes in fishing and riverine communities [43, 44]. Although continental and semi-arid areas have a lower diversity of fish species in relation to the coastal areas, some of these species are used in folk medicine . The use of fishes in popular medicine has been recorded in fishing communities in Brazil and many other countries in Latin America [44, 46–54]. The multiple use of fishes by humans is common [43, 55] and reinforces the importance of fish in the culture, livelihood and economic activities of fishing communities . The reliance on traditional uses of animals as food and as medicine by communities around the world highlights the need for further interdisciplinary research in ethnozoology which can be used in strategies to conserve biodiversity  In the surveyed area, it was not registered food taboos associated to fishes mentioned by interviewees. It differs from what has been reported in previous studies [54, 56, 57] that points out food taboos in several fishing communities. For example, the consumption of some animals may be avoided because of their behavioral patterns and morphological characteristics , or in the belief that they are toxic .
The indigenous Truká fishers cited two fish species used as medicine, the trahira (Hoplias malabaricus) and spotted sorubim (Pseudoplatystoma corruscans). However, these species are mainly used for food, and at times, their by-products are used in folk medicine. The interviewees noted that trahira is used to treat earache, toothache and fatigue (asthma). The part used is the fat, which is warmed and rubbed on the affected body part. The trahira has medicinal use in several communities of the Brazilian semi-arid northeast and is one of the most important fish species in folk medicine in the region. Previous studies indicate that in addition to the whole animal, other parts of the fish are also used, including the fat, epidermal secretion, stomach, head, scales and meat. These products are prescribed to treat the following diseases: alcoholism, earache, inflammation, high cholesterol, sore throat, inflammation of the umbilical cord, bruising, ear inflammation, hearing problems, eye inflammation, urinary tract infection, deafness, asthma, muscle aches, erysipelas, wounds, bleeding, snake bite, conjunctivitis, oedema, rheumatism, glaucoma, and stroke [25, 43, 59–62]. This broad range of zootherapeutic uses and the various locations where such use has been recorded make H. malabaricus one of the fish species most extensively used in Brazilian folk medicine [59, 63, 64].
Regarding the spotted sorubim, in the areas surveyed, the spine is used to ‘remove anger’ (control bad temper/anxiousness) and ‘evil eye’. For this purpose, the fish spine is pounded, toasted, and then used to prepare a tea, which the patient drinks to achieve the desired effect. Costa-Neto et al.  also recorded the use of the spotted sorubim for the treatment of burns by artisanal fishers in the region of the middle São Francisco River; however, in this case, the part used was the fat.
Capture techniques and general aspects of fishing among the Truká
In the villages surveyed, fishing can be practiced by men and women, although there is a predominance of the former. Children also participate in fishing when they accompany the adults during their fishing activities. The predominance of men may be explained by the fact that historically in Truká culture, as in other traditional communities, men are responsible for supporting and maintaining the family and women are responsible for caring for the home. Ethnozoological studies show that activities such as fishing and hunting, two of the main subsistence activities of indigenous communities, are practiced predominantly by men, who end up developing greater knowledge about the species exploited and their biology, as this knowledge is important in the organization of fishing and hunting activities [5, 6, 65–68].
Ecological knowledge on fished species
Association between vertical habitat division, fish species and fishing artefact used by Truká fishers
Fish species (Cabrobó)
Fish species (Orocó)
‘Water surface’ (30 cm)
‘Shallow’ (100 cm)
Hoplias malabaricus and Lophiosilurus alexandri
Bow and arrow Hand line
‘Moderately deep’ (160 cm)
Cichla ocellaris, Serrasalmus brandtii, Salminus cf. brasiliensis, Conorhynchus conirostris, Pachyurus Francisci
Rod and hook
Hand line Cast net Paddle canoe
‘Deep’ (starting at 200 cm)
Pseudoplatystoma Coruscans, Pimelodella cf. vittata, Leporinus cf piau, Metynnis maculatus, Pterygoplichthys etentaculatus, Astronotus ocellatus, Colossoma macropomum, Hypostomus cf margaritifer, Plagioscion squamosissimus, Brycon reinhardtii, Prochilodus argenteus, Conorhynchus conirostris, Pygocentrus piraya
Pimelodella cf. vittata, Leporinus cf piau, Metynnis maculatus, Cichla ocellaris, Colossoma macropomum, Hypostomus cf margaritifer, Plagioscion squamosissimus, Prochilodus argenteus, Pygocentrus piraya
Rod and hook Fishing net Motorized canoe
‘Mud’ (450 cm to 1000 cm)
Hoplias malabaricus, Hypostomus macrops, Pterygoplichthys etentaculatus, Gymnotus cf. carapo, Parauchenipterus galeatus
Cast net Rod and hook Fishing net
Association between river sections, fish species and fishing artefacts informed by Truká fishers
Fish species (Cabrobó)
Fish species (Orocó)
Hoplias malabaricus, Serrasalmus brandtii,
Rod and hook
Conorhynchus conirostris, Pachyurus Francisci
Astronotus ocellatus, Colossoma macropomum, Hypostomus cf margaritifer, Plagioscion squamosissimus, Prochilodus argenteus, Pygocentrus piraya, Cichla ocellaris
Cichla ocellaris, Colossoma macropomum, Hypostomus cf margaritifer, Plagioscion squamosissimus, Prochilodus argenteus, Pygocentrus piraya
Rod and hook
Salminus cf. brasiliensis, Pseudoplatystoma Coruscans, Hypostomus macrops, Pterygoplichthys etentaculatus, Conorhynchus conirostris, Parauchenipterus galeatus, Gymnotus cf. carapo, Pimelodella cf. vittata, Pterygoplichthys etentaculatus
Serrasalmus brandtii, Lophiosilurus alexandri, Pimelodella cf. vittata
Rod and hook Cast net
Leporinus cf piau, Brycon reinhardtii, Metynnis maculatus
Leporinus cf piau and Metynnis maculatus
Rod and hook
Knowledge of the distribution, habitat, and ecology of fish species is an important driver of the capture strategies to be used. A previous study conducted with fishers in the Três Marias dam and other sections of the upper-middle São Francisco also revealed that this type of knowledge is applied to the selection of fishing techniques . Those authors note that the compartmentalization of the aquatic ecosystem perceived by the fishers reduce the uncertainty of fishing because fish are a mobile resource and therefore uncertain. These ethno-habitats may be understood as ecozones, which were defined by Posey  as ecological areas recognized in other cultural systems and may or may not reflect the scientific classification. These findings reinforce previous studies that showed the importance of knowledge of abiotic and ecological factors in the organization of fishing activities, whether in coastal or inland areas [11, 14, 70, 71, 76, 77].
Environmental changes and their influence on fishing among the Truká
The fishers cited several problems that, according to them, have led to the decline of fishing in the villages surveyed. These problems include the growth of illegal fishing in the Truká territory by non-indigenous fishers, deforestation of the river banks, introduction of exotic species and pollution. These same factors were reported by Oliveira and Souza  to cause the decline of fishing stocks in the sub-middle São Francisco River. The introduction of exotic species in fresh water environments has been recognized as one of the greatest impacts to native species throughout the world [78–80]. In the case of the São Francisco River, several species have been introduced, and as indicated by the statements of the interviewees, these introductions have impacted the native species and caused changes in the traditional fishing activity of riverine populations. The species cited by the fishers included the butterfly peacock bass (Cichla ocellaris) and South American silver croaker (Plagioscion squamosissimus). These species were introduced to the Sobradinho Hydroelectric Plant Lake by the National Department of Works Against Drought (Departamento Nacional de Obras Contra as Secas-DNOCS) at the end of the 1970s . In addition, many other species have been introduced species from fish farming experiments in the region, such as the oscar (Astronotus ocellatus) and tambaqui (Colossoma macropomum), generating at times negative impacts on the native fish populations .
The local fishers also mentioned that pollution, use of pesticides and sewage from riverine cities discharged into the river are factors that have caused the decline of native fish species. The occurrence of these problems along the São Francisco River basin has been recognized in different studies and, as highlighted by Gisler and Vasconcelos , has led to a reduction in fish stocks in the region.
The Truká, as well as other riverside communities along the São Francisco River, have been heavily affected by environmental degradation, which has intensified as a result of the construction of a series of dams along the course of the river and the intensification of urbanization [28, 35, 42]. Hydroelectric dams have strong negative impacts on fishing and are among the main causes of the decline of fishing in rivers and freshwater environments in many countries [82, 83]. The regulation of the hydrological regime of a river through dams is generally recognized as one of the most devastating forms of habitat degradation of inland waters . Several causes may be attributed to the decline of fishing in the São Francisco River, such as pollution, improper use of soil, inadequate fishing laws, overfishing, habitat destruction and damming. All of these factors are recognized by the Truká as causing impacts and as they note, have changed the way of life not only of the Truká people but of other ethnic groups associated with the river.
Our results demonstrate that fishing is still an activity that persists among the Truká, who use the considerable richness of native fish species (and some exotic ones) as a food resource. Among the species used for food, two have by-products that are used in local traditional medicine. Despite the persistence of fishing and the use of fishes by the Truká, the testimonies of the interviewees indicated that this activity has less importance to their subsistence than in the past and that this shift has taken place due to a series of factors that have impacted the São Francisco River and caused the decline of fish stocks in the communities surveyed. This situation is an example of how environmental degradation has affected the subsistence culture of indigenous communities.
Although fishing is declining in importance among the Truká, we found that the individuals who are still practicing this activity have a broad knowledge about the habitat and ecology of the target species and apply that knowledge to fishing methods. The Truká also provided information on the impacts related to population declines in the fish fauna of the São Francisco River. Knowledge about the ecology of the species and the environmental impacts that have affected them can support basic research on local fish populations and research investigating the environmental impacts, resource management and sustainable exploitation of fisheries resources.
A special thanks to the Truká people who contributed the information and knowledge for this study. We also thank the experts who contributed to the identification of fish species, Paul Roberto Duarte Lopes, MSc, and James Tavares de Oliveira Silva, MSc, from UEFS. Thanks also to the National Council of Technological and Scientific Development (Conselho Nacional de Desenvolvimento Científico e Tecnológico-CNPQ) for the research productivity scholarship granted to RRNA and for financial support (Process 476460/2012-3).
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- Alves RRN. Relationships between fauna and people and the role of ethnozoology in animal conservation. Ethnobiology and Conservation. 2012;1:1–69.Google Scholar
- Rocha MSP, Mourão JS, Souto WMS, Barboza RRD, Alves RRN. Uso dos recursos pesqueiros no Estuário do Rio Mamanguape, Estado da Paraíba, Brasil. Interciencia. 2008;33:903–9.Google Scholar
- FAO - Food and Agriculture Organization of the United Nations. The state of world fisheries and aquaculture 2008. Rome Italy: FAO Fisheries Department; 2009.Google Scholar
- FAO–Food and Agriculture Organization of the United Nations. What future for inland fisheries? In: The state of world fisheries and aquaculture 2010. Rome, Italy: FAO, Food and Agriculture Organization of the United Nations; 2010.Google Scholar
- Pinto MF, Mourão JS, Alves RRN. Use of ichthyofauna by artisanal fishermen at two protected areas along the coast of Northeast Brazil. J Ethnobiol Ethnomed. 2015;11:1–32.View ArticleGoogle Scholar
- Pinto MF, Mourão JS, Alves RRN. Ethnotaxonomical considerations and usage of ichthyofauna in a fishing community in Ceará State, Northeast Brazil. J Ethnobiol Ethnomed. 2013;9:1–11.View ArticleGoogle Scholar
- Begossi A, Silvano RAM, Amaral BD, Oyakama OT. Uses of fish and game by inhabitants of an extrative reserve (Upper Juruá, Acre, Brazil). Environ Dev Sustain. 1999;1:73–93.View ArticleGoogle Scholar
- Mourão JS, Nordi N. Pescadores, peixes, espaço e tempo: uma abordagem Etnoecológica. Interciencia. 2006;31:358–63.Google Scholar
- Diegues AC, Arruda RSV, Silva VCF, Figols FAB, Andrade D. Os Saberes Tradicionais e a Biodiversidade no Brasil. 1st ed. São Paulo: Ministério do Meio Ambiente; 1999.Google Scholar
- Paz VA, Begossi A. Ethnoichthyology of Galviboa fishermen of Sepetiba Bay, Brazil. J Ethnobiol. 1996;16:157–68.Google Scholar
- Alves RRN, Nishida AK. A ecdise do caranguejo-uçá, Ucides cordatus L. (Decapoda, Brachyura) na visão dos caranguejeiros. Interciencia. 2002;27:110–7.Google Scholar
- Seixas C, Begossi A. Ethnozoology of caiçaras from Aventureiro, Ilha Grande. J Ethnobiol. 2001;21:107–35.Google Scholar
- Nishida AK, Nordi N, Alves RRN. Mollusc gathering in Northeast Brazil: an ethnoecological approach. Hum Ecol. 2006;34:133–45.View ArticleGoogle Scholar
- Nordi N, Nishida AK, Alves RRN. Effectiveness of two gathering techniques for Ucides cordatus in Northeast Brazil: implications for the sustainability of mangrove ecosystems. Hum Ecol. 2009;37:121–7.View ArticleGoogle Scholar
- Gadgil M, Berkes F, Folke C. Indigenous knowledge for biodiversity conservation. Ambio. 1993;22:151–6.Google Scholar
- Berkes F, Folke C, Gadgil M. Traditional ecological knowledge, biodiversity, resilience and sustainability. 1995. Beijer International Institute of Ecological Economics.View ArticleGoogle Scholar
- Capistrano JF, Lopes PFML. Crab gatherers perceive concrete changes in the life history traits of Ucides cordatus (Linnaeus, 1763), but overestimate their past and current catches. Ethnobiology and Conservation. 2012;1:1–21.Google Scholar
- Alves RRN, Souto WMS. Ethnozoology: a brief introduction. Ethnobiology and Conservation. 2015;4:1–13.Google Scholar
- Alves RRN, Souto WMS. Ethnozoology in Brazil: current status and perspectives. J Ethnobiol Ethnomed. 2011;7(22):1–18.Google Scholar
- Silvano RAM, Begossi A. What can be learned from fishers? An integrated survey of fishers’ local ecological knowledge and bluefish (Pomatomus saltatrix) biology on the Brazilian coast. Hydrobiologia. 2010;637:3–18.View ArticleGoogle Scholar
- Begossi A, Svetlana SV, Andreoli TB, Clauzet M, Martinelli CM, Ferreira AGL, et al. Ethnobiology of snappers (Lutjanidae): target species and suggestions for management. J Ethnobiol Ethnomed. 2011;7(11):1–22.Google Scholar
- Begossi A, Silvano RAM. Ecology and ethnoecology of dusky grouper [garoupa, Epinephelus marginatus (Lowe, 1834)] along the coast of Brazil. J Ethnobiol Ethnomed. 2008;4(20):1–14.Google Scholar
- Premauer JM, Berkes F. A pluralistic approach to protected area governance: Indigenous Peoples and Makuira National Park, Colombia. Ethnobiology and Conservation. 2015;4:1–16.Google Scholar
- Marques JGW. Aspectos ecológicos na etnoictiologia dos pescadores do complexo estuarino-lagunar Mundaú-Manguaba. Alagoas: Universidade Estadual de Campinas; 1991.Google Scholar
- Marques JGW. Pescando pescadores: etnoecologia abrangente no baixo São Francisco alagoano. São Paulo, BR: NUPAUB-USP; 1995.Google Scholar
- Costa-Neto EM, Dias CV, Melo MN. O conhecimento ictiológico tradicional dos pescadores da cidade de Barra, região do Médio São Francisco, Estado da Bahia, Brasil. Acta Scientiarum. 2002;24:561–72.Google Scholar
- Thé APG, Nordi N. Common property resource system in a fishery of the Sao Francisco River, Minas Gerais, Brazil. Human Ecology Review. 2006;13:1–10.Google Scholar
- Aspelin PL, Santos SC. Indian areas threatened by hydroelectric projects in Brazil. IWGIA Document 44, International Workgroup for Indigenous Affair. 1981. p. 201.Google Scholar
- SBG. Projeto cadastro de fontes de abastecimento por água subterrânea. Diagnóstico do município de Cabrobó, Estado de Pernambuco. CPRM/PRODEEM. 2005.Google Scholar
- SGB. Projeto cadastro de fontes de abastecimento por água subterrânea. Diagnóstico do município de Orocó, Estado de Pernambuco. CPRM/PRODEEM. 2005.Google Scholar
- Batista MRR. Descobrindo e recebendo heranças: As lideranças Truká. PhD Thesis. Universidade Federal do Rio de Janeiro. 2005.Google Scholar
- Albuquerque UP, Cunha LVFC, Lucena RFP, Alves RRN. Methods and techniques in ethnobiology and ethnoecology. New York: Springer; 2014.View ArticleGoogle Scholar
- Bailey K. Methods of social research. New York: Free Press; 1994.Google Scholar
- Huntington HP. Using traditional ecological knowledge in science: methods and applications. Ecol Appl. 2000;10:1270–4.View ArticleGoogle Scholar
- Sato Y, Godinho HP. Peixes da bacia do rio São Francisco. In: Lowe-McConnell RH, editor. Estudos ecológicos de comunidades de peixes tropicais. São Paulo: Edusp; 1999. p. 401–13.Google Scholar
- Oliveira LMSR, Souza JM. (Des) caminhos da pesca artesanal no submédio São Francisco. RDE-Revista de Desenvolvimento Econômico. 2011;12:86–90.Google Scholar
- Almeida MJ. O drama do São Francisco. Brasília: Gráfica do Senado Federal; 1971.Google Scholar
- Sigaud L. O efeito das tecnologias sobre as comunidades rurais: o caso das grandes barragens. Revista Brasileira de Ciências Sociais. 1992;7:18–28.Google Scholar
- Vieira HTG, Oliveira JEL, Neves RCM. The intermedicality relationship among Truká Indians, in Cabrobó-Pernambuco. Saúde e Sociedade. 2013;22:566–74.View ArticleGoogle Scholar
- van Vliet N, Quiceno-Mesa MP, Cruz-Antia D, Tellez L, Martins C, Haiden E, et al. From fish and bushmeat to chicken nuggets: the nutrition transition in a continuum from rural to urban settings in the Tri frontier Amazon region. Ethnobiology and Conservation. 2015;4:1–12.Google Scholar
- Popkin BM. Global nutrition dynamics: the world is shifting rapidly toward a diet linked with noncommunicable diseases. Am J Clin Nutr. 2006;84:289–98.PubMedGoogle Scholar
- Godinho AL, Godinho HP. Breve visão do São Francisco. In: Águas, peixes e pescadores do São Francisco das Minas Gerais. Belo Horizonte: PUC Minas; 2003. p. 15–23.Google Scholar
- El-Deir ACA, Collier CA, Almeida Neto MS, Silva KMS, Policarpo IS, Araújo TAS, et al. Ichthyofauna used in traditional medicine in Brazil. Evid Based Complement Alternat Med. 2012;2012 (ID 474716):1–16.View ArticleGoogle Scholar
- Alves RRN, Rosa IL. Zootherapeutic practices among fishing communities in North and Northeast Brazil: a comparison. J Ethnopharmacol. 2007;111:82–103.View ArticlePubMedGoogle Scholar
- Alves RRN. Fauna used in popular medicine in Northeast Brazil. J Ethnobiol Ethnomed. 2009;5:1–30.View ArticlePubMedPubMed CentralGoogle Scholar
- Martinez GJ. Use of fauna in the traditional medicine of native Toba (qom) from the Argentine Gran Chaco region: an ethnozoological and conservationist approach. Ethnobiology and Conservation. 2013;2:1–43.Google Scholar
- Barros FB, Varela SAM, Pereira HM, Vicente L. Medicinal use of fauna by a traditional community in the Brazilian Amazonia. J Ethnobiol Ethnomed. 2012;8:1–19.View ArticleGoogle Scholar
- Silva AL. Animais medicinais: conhecimento e uso entre as populações ribeirinhas do rio Negro, Amazonas, Brasil. Boletim do Museu Paraense Emílio Göeldi. 2008;3:343–57.View ArticleGoogle Scholar
- Figueiredo N. Os ‘bichos’ que curam: os animais e a medicina ‘folk’ em Belém do Pará. Boletim do Museu Paraense Emílio Göeldi. 1994;10:75–91.Google Scholar
- Branch L, Silva MF. Folk medicine in Alter do Chão, Pará, Brasil. Acta Amazônica. 1983;13:737–97.Google Scholar
- Vázquez PE, Méndez RM, Guiascón ÓGR, Piñera EJN. Uso medicinal de la fauna silvestre en los Altos de Chiapas, México. Interciencia. 2006;31:491–9.Google Scholar
- Apaza L, Godoy R, Wilkie D, Byron E, Huanca T, Leonard WR, et al. Markets and the use of wild animals for traditional medicine: a case study among the Tsimané ameridians of the Bolivian rain forest. J Ethnobiol. 2003;23:47–64.Google Scholar
- Alves RRN, Alves HN. The faunal drugstore: animal-based remedies used in traditional medicines in Latin America. J Ethnobiol Ethnomed. 2011;7(9):1–43.Google Scholar
- Begossi A, Braga F. Food taboos and folk medicine among fishermen from the Tocantins River. Amazoniana. 1992;12:341–52.Google Scholar
- Alves RRN, Oliveira TPR, Rosa IL. Wild animals used as food medicine in Brazil. Evid Based Complement Alternat Med. 2013;ID 670352:1–13.View ArticleGoogle Scholar
- Meyer-Rochow VB. Food taboos: their origins and purposes. J Ethnobiol Ethnomed. 2009;5:1–10.View ArticleGoogle Scholar
- Colding J, Folke C. The relations among threatened species, their protection, and taboos. Conservation ecology. 1997;1:1–6.Google Scholar
- Silva AL. Comida de gente: preferências e tabus alimentares entre os ribeirinhos do Médio Rio Negro (Amazonas, Brasil). Revista de Antropologia. 2007;50:125–79.View ArticleGoogle Scholar
- Alves RRN, Santana GG, Rosa IL. The role of animal-derived remedies as complementary medicine in Brazil. In: Alves RRN, Rosa IL, editors. Animals in traditional folk medicine: Implications for conservation. Berlin: Springer Berlin Heidelberg; 2013. p. 289–301.View ArticleGoogle Scholar
- Ferreira FS, Fernandes-Ferreira H, Leo Neto N, Brito SV, Alves RRN. The trade of medicinal animals in Brazil: current status and perspectives. Biodivers Conserv. 2013;22:839–70.View ArticleGoogle Scholar
- Ferreira FS, Albuquerque UP, Coutinho HDM, Almeida WO, Alves RRN. The trade in medicinal animals in Northeastern Brazil. Evid Based Complement Alternat Med. 2012;ID 126938:1–20.View ArticleGoogle Scholar
- Alves RRN, Oliveira MGG, Barboza RRD, Lopez LCS. An ethnozoological survey of medicinal animals commercialized in the markets of Campina Grande, NE Brazil. Human Ecology Review. 2010;17:11–7.Google Scholar
- Alves RRN, Rosa IL, Santana GG. The role of animal-derived remedies as complementary medicine in Brazil. BioScience. 2007;57:949–55.View ArticleGoogle Scholar
- Silva JS, El-Deir ACA, Moura GJB, Alves RRN, Albuquerque UP. Traditional ecological knowledge about dietary and reproductive characteristics of Tupinambis merianae and Hoplias malabaricus in Semiarid Northeastern Brazil. Hum Ecol. 2014;42:901–11.View ArticleGoogle Scholar
- Alves RRN, Mendonça LET, Confessor MVA, Vieira WLS, Lopez LCS. Hunting strategies used in the semi-arid region of northeastern Brazil. J Ethnobiol Ethnomed. 2009;5:1–50.View ArticlePubMedPubMed CentralGoogle Scholar
- Alves RRN, Gonçalves MBR, Vieira WLS. Caça, uso e conservação de vertebrados no semiárido Brasileiro. Tropical Conservation Science. 2012;5:394–416.Google Scholar
- Fernandes-Ferreira H, Mendonça SV, Albano C, Ferreira FS, Alves RRN. Hunting, use and conservation of birds in Northeast Brazil. Biodivers Conserv. 2012;21(1):221–44.View ArticleGoogle Scholar
- Mourão JS, Nordi N. Principais critérios utilizados por pescadores artesanais na taxonomia folk dos peixes do estuário do rio Mamanguape, Paraíba-Brasil. Interciencia. 2002;27:607–12.Google Scholar
- Pezzuti J, Chaves RP. Ethnography and natural resources management by the Deni Indians, Amazonas, Brazil. Acta Amazonica. 2009;39:121–38.View ArticleGoogle Scholar
- Nishida AK, Nordi N, Alves RRN. The lunar-tide cycle viewed by crustacean and mollusc gatherers in the State of Paraíba, Northeast Brazil and their influence in collection attitudes. J Ethnobiol Ethnomed. 2006;2:1–12.View ArticlePubMedPubMed CentralGoogle Scholar
- Alves RRN, Nishida A, Hernandez M. Environmental perception of gatherers of the crab ‘caranguejo-uca’ (Ucides cordatus, Decapoda, Brachyura) affecting their collection attitudes. J Ethnobiol Ethnomed. 2005;1:10.View ArticlePubMedPubMed CentralGoogle Scholar
- Nishida AK, Nordi N, Alves RRN. Embarcações utilizadas por pescadores estuarinos da Paraíba, Nordeste Brasil. Revista de Biologia e Farmácia. 2008;3:1–8.Google Scholar
- Silvano RAM, MacCord PFL, Lima RV, Begossi A. When does this fish spawn? Fishermen’s local knowledge of migration and reproduction of Brazilian coastal fishes. Environ Biol Fishes. 2006;76:371–86.View ArticleGoogle Scholar
- Thé APG, Madi EF, Nordi N. Conhecimento local, regras informais e uso do peixe na pesca do alto-médio São Francisco. In: Godinho HP, Godinho AL, editors. Águas, peixes e pescadores do São Francisco das Minas Gerais. Belo Horizonte: Editora PUC Minas; 2003. p. 372–89.Google Scholar
- Posey DA. Topics and issues in ethnoentomology with some suggestions for the development of hypothesis-generation and testing in ethnobiology. J Ethnobiol. 1986;6:99–120.Google Scholar
- Nishida AK, Nordi N, Alves RRN. Molluscs production associated to lunar-tide cycle: a case study in Paraíba State under ethnoecology viewpoint. J Ethnobiol Ethnomed. 2006;2:6.View ArticleGoogle Scholar
- Bezerra DMM, Nascimento DM, Ferreira EN, Rocha PD, Mourão JS. Influence of tides and winds on fishing techniques and strategies in the Mamanguape River Estuary, Paraíba State, NE Brazil. An Acad Bras Cienc. 2012;84:775–88.View ArticlePubMedGoogle Scholar
- Mills EL, Leach JH, Carlton JT, Secor CL. Exotic species and the integrity of the Great Lakes. BioScience. 1994;44:666–76.View ArticleGoogle Scholar
- Lodge DM, Stein RA, Brown KM, Covich AP, Bronmark C, Garvey JE, et al. Predicting impact of freshwater exotic species on native biodiversity: challenges in spatial scaling. Australian Journal of Ecology. 1998;23:53–67.View ArticleGoogle Scholar
- Kolar CS, Lodge DM. Freshwater nonindigenous species: interactions with other global changes. In: Mooney AH, Hobbs JR, editors. Invasive species in a changing world. Washington DC: Island Press; 2000. p. 3–30.Google Scholar
- Gisler CVT, Vasconcelos RQ. Projeto de gerenciamento integrado das atividades desenvolvidas em terra na bacia do São Francisco. ANA/GEF/PNUMA/OEA. 2004.Google Scholar
- Agostinho AA, Pelicice FM, Gomes LC. Dams and the fish fauna of the Neotropical region: impacts and management related to diversity and fisheries. Braz J Biol. 2008;68:1119–32.View ArticlePubMedGoogle Scholar
- Zhong Y, Power G. Environmental impacts of hydroelectric projects on fish resources in China. Regul Rivers: Res Manage. 1996;12:81–98.View ArticleGoogle Scholar
- Petts GE, Imhof J, Manny BA, Maher JFB, Weisberg SB. Management of fish populations in large rivers: a review of tools and approaches. In: Proceedings of the International Large River Symposium Canadian special publication of fisheries and aquatic sciences; Ottowa, Ontario. 1989. p. 578–88.Google Scholar