Sagitta friderici Ritter-Záhony (Chaetognatha) from South Atlantic waters: abundance, population structure, and life cycle | Zendy

M.C Daponte | Zendy; F.L. Capitanio | Zendy; Daniel E. Nahabedian | Zendy; María Delia Viñas | Zendy; R.M. Negri | Zendy

Open Access

Sagitta friderici Ritter-Záhony (Chaetognatha) from South Atlantic waters: abundance, population structure, and life cycle

Author(s) -

M.C Daponte,

F.L. Capitanio,

Daniel E. Nahabedian,

María Delia Viñas,

R.M. Negri

Publication year - 2004

Publication title -

ices journal of marine science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 117

eISSN - 1095-9289

pISSN - 1054-3139

DOI - 10.1016/j.icesjms.2004.03.006

Subject(s) - sagitta , reproduction , abundance (ecology) , population , zoology , biology , annual cycle , ecology , fishery , demography , otolith , sociology , fish <actinopterygii>

The life cycle of Sagitta friderici, a neritic species from Pacific, Atlantic, and Mediterranean waters, has been poorly studied. Aiming at increasing our knowledge of this species in the Argentine Sea, the size structure, dry weight, distribution of maturity stages (ovarian, testicular, and seminal vesicles development), and life-cycle duration were studied from samples obtained at a permanent station (EPEA STATION, 38°28′S 57°41′W) from 9 March 2000 to 10 April 2001. The almost permanent presence of juveniles and the extended period during which mature adults (stage III) were detected suggest that reproduction occurs continuously with two main peaks, the main one in the summer (December–February) and a lesser one in the fall (April–May). Significant (p 0.05).

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