INVESTIGADORES
DEVERCELLI Melina
congresos y reuniones científicas
Título:
Diatoms: a food source to Aegla uruguayana (Decapoda: Anomura: Aeglidae?
Autor/es:
DEVERCELLI, M.; WILLINER, V.
Lugar:
Florianópolis, Brasil
Reunión:
Congreso; 3rd Brazilian Crustacean Congress and 2004 The Crustacean Society Summer Meeting; 2004
Resumen:
The aim of this study was to analyze the digestibility and viability following gut passage through Aegla uruguayana of diatoms. Crabs (n=28) and diatoms samples were collected from Las Pencas Stream (Entre Ríos Province, Argentina). Organisms were allowed to graze the source, after which they were placed in recipes to defecate. Samples of fecal and source material were analyzed microscopically to quantified live and dead diatoms. Both samples were inoculated onto Chu 10-infused agar cultures to confirm that live cells were viable. T-test was used to detect changes in live-cell percentages between treatments. Growth rates of cultures were calculated as the slope of regression. The difference of live cells among source and feces was 12% (p<0.05). Both agar cultures produced colonies that increased in cell density over the 5 days incubation period. The slope was significantly higher in the fecal than in source culture (p<0.05). Evidence of digestion resistance and, perhaps, reproductive stimulation by gut passage could be tested in this experience.