Data/hora: 09/06/2024 04:14:30

Provedor de dados: | 20
País: | Belgium

Título:

Preferencias ambientales, por rangos de talla, de las hembras maduras e impregnadas del langostino Pleoticus muelleri (Spence Bate, 1888) (Crustacea, Decapoda, Solenoceridae) del golfo San Jorge, en la primavera de 2008 y el verano de 2009

Environmental preferences per size range of mature and impregnated females of shrimp Pleoticus muelleri (Spence Bate, 1888) (Crustacea, Decapoda, Solenoceridae) of the San Jorge Gulf, in Spring 2008 and Summer 2009

Autores: | Hernández, D.R.; Fernández, M.B.
Data: | 2014-06-12
Ano: | 2013
Palavras-chave: | Females; Sexual maturity; Environmental conditions; Temperature preferences; Statistical models.
Resumo: | Environmental preferences per size range of mature and impregnated females of shrimp Pleoticus muelleri (Spence Bate, 1888) (Crustacea, Decapoda, Solenoceridae) of the San Jorge Gulf, in Spring 2008 and Summer 2009. The relation between argentine red shrimp Pleoticus muelleri (Spence Bate, 1888) mature and impregnated females density values and environmental variables was analysed. Data derived from the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) research cruises carried out between 43° S-47° S and 64° Wand the coast during November-December 2008 and January-February 2009. The biological and environmental variables considered were density of mature and impregnated females per size range and depth, bottom water temperature and salinity and temperature and salinity difference between surface and bottom waters. Environmental preference values were calculated and generalized additive models and general linear models applied. Impregnated females were observed in lower depth and higher bottom water temperature ranges than those of mature females. Only in January-February 2009 a significant increasing relation between mature females and bottom water temperature could be established, which shows the importance of said variable to induce ovarian maturation and spawning processes. The relation between the location of the largest concentrations of impregnated females in coastal areas and the development of frontal systems is discussed.
Tipo: | Journal Contribution
Idioma: | Espanhol

Identificador:

Inidep Informe Técnico, 86, p. 1-23

0327-9642

http://hdl.handle.net/1834/5505

Fonte: | http://creativecommons.org/licenses/by-nc/3.0/