Reproductive variables of Hypleurochilus fissicornis (Quoy & Gaimard, 1824) (Pisces: Blennidae) on rocky intertidal zones in Southwestern Atlantic

DELPIANI, S.M.; BRUNO, D.O.; MILITELLI M.I.; ACUÑA, F.H.; DÍAZ DE ASTARLOA, J.M.; GONZÁLEZ CASTRO, M.

JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM

CAMBRIDGE UNIV PRESS

Lugar: Cambridge; Año: 2021 vol. 101 p. 409 - 418

0025-3154

Hypleurochilus fissicornis is a resident species of the intertidal and subtidal zones of Mar del Plata, Argentina. The specific reproductive biology was studied by means of both microscopic and macroscopic analyses. A total of 212 males and 223 females were analyzed. Specimens were dissected and their gonads and livers were removed.The gonadosomatic and hepatosomatic indexes, and the condition factor were calculated on a monthly basis. Hypleurochilus fissicornis breeds in rocky intertidal areas, and exhibit a low fecundity with benthic eggs and parental care. Size at first maturity (L50) was estimated at 53.66 and55.83 mm total length for females and males, respectively. The spawning season takes place between December and April.