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Table 1 Cognitive map about jaraquis reproduction according to central Amazon fishermen and the scientific literature.

From: In search of traditional bio-ecological knowledge useful for fisheries co-management: the case of jaraquis Semaprochilodus spp. (Characiformes, Prochilodontidae) in Central Amazon, Brazil

ITEM

CITAÇÕES DOS PESCADORES

CITAÇÕES CIENTÍFICAS

Length of first maturation

"The fish begins to reproduce with 20 cm and 2 years old"

Jaraqui-escama-fina:

L50: 24-25 cm FL [47]

Age L50: 2,0-2,2 years [10]

L50:24,8 cm TL [42]

 

"The jaraqui (reproducer) length is 27 cm (CT) with about 5 years old"

Jaraqui-escama-grossa:

L50:22,3 cm SL/2,3 years [9]

Age L50: 1,9-2,3 years [10]

L50:26,4 cm TL [42]

Jaraquis:

Age L50: 2,0 years [41]

  

Jaraquis:

Age L50: 2,0 years [41]

Spawning season

"Jaraqui produces youths during the floods "

Jaraqui-escama-fina: Dec-Jan [38]

Jaraqui-escama-grossa: Jan-Mar [42]

Jaraquis: Dec-Mar/beginning of the flood1 [41, 47]; Nov-Mar [9]

Spawning grounds

" Jaraqui spawns in white waters"

Spawn in the confluence of black and white waters [41, 42]

Parental care

"Jaraqui do not take care"

Parental care not recorded [4143, 47, 50]

Spawning type

"Jaraqui spawn once per year"

Total spawners [41, 42, 50]

Fecundity

"The fish has many eggs, thousands"

Jaraqui-escama-fina: 45-105 thousand [57]