Biología reproductiva del gatuzo Mustelus schmitti Springer, 1939 (Triakidae: Carcharhinidae) en el área de Puerto Quequén, Provincia de Buenos Aires.

SIDDERS, M.; TAMINI, L.; PEREZ, J.; CHIARAMONTE, GUSTAVO ENRIQUE

Revista Del Museo Argentino de Ciencias Naturales

Museo Argentino de Ciencias Naturales

Lugar: CABA; Año: 2005 p. 1 - 1

1514-5158

The reproductive biology of M. schmitti collected from the commercial bottom trawl fishery operating in Puerto Quequén, Argentina is investigated in the present study. The specimens were sampled seasonally during 2003?2004. The number of sharks collected was 637 (298 males and 339 females), including 190 pregnant females with 1,103 embryos. Size ranges for males were 419 ? 819 mm total length (LT) and 417 ? 951 mm LT for females. Total length and body weight relationship was different between sexes (P0.05). Size frequency shows that females attain larger length and weight than males. Fifty percent (50%) of maturity size shows that males mature at a lower LT (567 mm) than females (598 mm). The left testis reached larger weight and length than the right one (P