INVESTIGADORES
BARON pedro Jose
artículos
Título:
Fluctuations in the biochemical composition of the Patagonian stone crab Platyxanthus patagonicus A. Milne Edwards, 1879 (Platyxanthidae: Brachyura) throughout its reproductive cycle
Autor/es:
DIMA, JIMENA B.; DE VIDO, NORMA A.; LEAL, GUSTAVO A.; BARÓN, PEDRO J.
Revista:
SCIENTIA MARINA
Editorial:
CSIC
Referencias:
Lugar: Barcelona; Año: 2009 vol. 73 p. 423 - 430
ISSN:
0214-8358
Resumen:
We analyzed the gonadosomatic (GSI) and hepatosomatic (HSI) indices, reproductive condition and biochemical
composition of the digestive gland, gonads and claw muscle of the Patagonian stone crab over a one-year period.
In females, the maximum HSI occurred in spring (gonad recovery period) and summer (maximum maturity period). The
maximum female GSI values were found in summer, and fell to minimum values in fall and winter. In males, the highest
GSI was observed during winter, which coincided with a non-mating period. The claw muscle biochemical composition did
not significantly differ between seasons for either sex, except for the significantly lower glycogen content observed in winter
relative to fall and summer in males. For both sexes, the claw muscle contained 72.4 to 81.2% moisture, 12.3 to 19.8% protein,
0.3 to 1.0% fat, 1.1 to 2.7% ash and 0.1 to 1.4% glycogen. In both sexes, the digestive gland was the main storage site
for lipids. In the ovary, lipid and protein contents were higher in spring and summer, and decreased to significantly lower
values after spawning. Moisture showed the opposite pattern and neither glycogen nor ash contents showed significant differences
between seasons. The biochemical composition of the testes-vasa deferentia complex did not show significant seasonal
fluctuations, except for higher moisture content in fall compared to summer and spring.