Interrelationships among egg, larvae and maternal characteristics in Persian sturgeon Acipenser persicus

AUTOR(ES)

Nazari, Rajab Mohammad, Ghomi, Mohammad Reza, Aquiloni, Laura

FONTE

Brazilian Archives of Biology and Technology

DATA DE PUBLICAÇÃO

2010-10

RESUMO

This study was aimed to observe the correlations among egg, larvae and maternal characteristics of Persian sturgeon. A total of 41 females were used and the variables including fertilization rate, incubation survival rate, larvae survival rate during yolk sac absorption (before feeding), and larvae survival rate after first feeding were determined. As a result, fertilization rate was positively correlated with three variables: incubation survival, larvae survival during yolk sac absorption, and GSI (gonadosomatic index). Also, maternal size (age, weight, total length) did not show a significant relation (P > 0.05) with incubation survival, larvae survival during yolk sac absorption and larvae survival at first feeding stage.

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