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Milt quality and spermatozoa morphology of captive Brycon siebenthalae (Eigenmann) broodstock
Author(s) -
CruzCasallas Pablo E,
LomboRodríguez Dora A,
VelascoSantamaría Yohana María
Publication year - 2005
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2005.01273.x
Subject(s) - milt , broodstock , biology , sperm , human fertilization , sperm motility , artificial fertilization , reproduction , semen , semen quality , andrology , zoology , anatomy , fishery , aquaculture , ecology , fish <actinopterygii> , botany , medicine
In order to develop artificial reproduction in freshwater fish for potential species to be developed in South American aquaculture, milt quality and sperm morphology were studied in yamú ( Brycon siebenthalae ) under captive conditions during the natural middle spermiation period. The volume of milt collected for each male was 1.8±1.2 mL and the sperm concentration was 13.9±4.0 × 10 9 spermatozoa mL −1 . Spermatocrit (41.5±10.8%) was positively associated ( r 2 =0.30) with sperm density calculated using a corpuscle counting chamber. Sperm motility was 88±9% and the average duration of forward motility was 41±7 s. Fertilization rate was 84±8% and there was no association between this trait and sperm motility ( r 2 =0.009) or with sperm density ( r 2 =0.073). These results suggest that captive B. siebenthalae broodstock can be reproduced successfully.