| Registro completo |
| Provedor de dados: |
BABT
|
| País: |
Brazil
|
| Título: |
Induced reproduction and reproductive characteristics of Rhinelepis aspera Agassiz, 1829 (osteichthyes: Siluriformes, Loricariidae)
|
| Autores: |
Sato,Yoshimi
Fenerich-Verani,Nelsy
Verani,José Roberto
Godinho,Hugo Pereira
Sampaio,Edson Vieira
|
| Data: |
1998-01-01
|
| Ano: |
1998
|
| Palavras-chave: |
Hypophysation
Rhinelepis aspera
Siluriformes
São Francisco River
|
| Resumo: |
Rhinelepis aspera is the largest Loricariidae species found in the São Francisco river basin where it is now rarely caught. Brooders kept in tanks were hypophysed with crude carp pituitary extract (CCPE). Approximately 82% of the females responded positive to the treatment. The egg was opaque, demersal, round, yellow and adhesive. Egg stripping was done at 212 hour-degrees (= 8.2 h) after application of the second dose of CCPE (water temperature = 25-26 ºC). Hatching of the larvae occurred at 1022 hour-degrees (= 42.2 h), after fertilization of the eggs (water temperature =24-25 ºC). Fertilization rate of the eggs was 72%. Absolute fecundity (AF), initial fertility (IF) and final fertility (FF) in relation to the females' body weight are expressed, respectively, by the equations: AF = - 33993 + 122308 Wt (r² = 0.88), IF = - 14823 + 58619 Wt (r² = 0.71) and FF = - 6553 + 29741 (r² = 0.61)
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000300006
|
| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
|
| Relação: |
10.1590/S1516-89131998000300006
|
| Formato: |
text/html
|
| Fonte: |
Brazilian Archives of Biology and Technology v.41 n.3 1998
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
