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vol.66 número2ESTUDIO POBLACIONAL DEL RECURSO ANCHOVETA (ENGRAULIS RINGENS JENYNS 1842) (CLUPEIFORMES, ENGRAULIDAE), MEDIANTE ANALISIS DE ADNRESPUESTAS HEMATOLOGICAS DE TRUCHAS (ONCORHYNCHUS MYKISS WALBAUM 1792) A ESTRES HIPOXICO AGUDO: SERIE ROJA índice de autoresíndice de materiabúsqueda de artículos
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Gayana (Concepción)

versión impresa ISSN 0717-652Xversión On-line ISSN 0717-6538

Resumen

GONZALEZ, Paola  y  OYARZUN, Ciro. BIOLOGICAL INDEX VARIABILITY IN PINGUIPES CHILENSIS VALENCIENNES 1833 (PERCIFORMES, PINGUIPEDIDAE): ARE THEY CORRELATED?. Gayana (Concepc.) [online]. 2002, vol.66, n.2, pp.249-253. ISSN 0717-652X.  http://dx.doi.org/10.4067/S0717-65382002000200023.

The Gonadosomatic Index (IGS) has been reported to be inversely related to Condition Factor (FCC) and the Hepatosomatic Index (IHS), presumably reflecting tradeoffs in energy used by fish. The present study examines behavior during an annual reproductive cycle of the Chilean sandperch Pinguipes chilensis. Seasonal behavior of IGS, FCC and IHS was analized in female (n=200) and male (n=214) P. chilensis caught in the Talcahuano area. The relationships among IGS, FCC and IHS were studied by lineal regression. Significant seasonal differences were found for each relationship. IGS values were not related to the FCC (p=0.41 in females and p=0.48 in males). There was no correlation between IGS and IHS in males (p=0.48) but a marginal relationship in females (r2=0.08, p= 0.00). The lack of relationship between IGS and FCC and IHS could indi-catephysiological conditions that support the fish maturation and spawning all around the year

Palabras clave : Pinguipes chilensis; reproduction; Gonadosomatic Index; Condition Factor; Hepatosomatic Index; Chile.

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