Reproductive biology of the South West Atlantic marbled skate Psammobatis bergi Marini, 1932 (Elasmobranchii, Rajidae)

SAN MARTÍN, M JIMENA; PEREZ, J.; CHIARAMONTE, GUSTAVO ENRIQUE

Journal of Applied Ichthyology-Zeitschrift Für Angewandte Ichthyologie

Blackwell Verlag

Lugar: Berlin; Año: 2005 vol. 21 p. 1 - 1

0175-8659

The reproductive biology of Psammobatis bergi was investigatedbased on 92 males and 136 females skates taken from thecoastal bottom trawl fishery at Puerto Quequen, Argentina.The relationship between total body mass and total length(TL) was not significantly different between sexes, butfemales were heavier than males. Minimum length at maturityin males was 451 mm TL with a length ratio of 74%, whereasfemales were 415 mm TL with a length ratio of 74%. TL atwhich 50% of males were mature was 457.6 mm (75.6% of thelargest male) and for females was 441.6 mm (79.1% of thelargest female). The results indicate a continuous reproductivecycle during the year, with a maximum number of femalescarrying egg cases in warmer seasons.