You are here:
EFFECTS OF FOOD AVAILABILITY ON LIPID CLASS COMPOSITION AND C AND N ACCUMULATION IN HEPATOPANCREATIC, OVARIAN AND EMBRYONIC TISSUES OF THE GRASS SHRIMP PALAEMONETES PUGIO: A LABORATORY STUDY
Citation:
Reinsel, K. A., A. K. Volety, C L. McKenney Jr., AND W S. Fisher. EFFECTS OF FOOD AVAILABILITY ON LIPID CLASS COMPOSITION AND C AND N ACCUMULATION IN HEPATOPANCREATIC, OVARIAN AND EMBRYONIC TISSUES OF THE GRASS SHRIMP PALAEMONETES PUGIO: A LABORATORY STUDY. Presented at Marine Benthic Ecology Meeting, Baton Rouge, LA, March 25-28, 1999.
Description:
In a laboratory experiment, limited food availability caused severe mortality and reduced growth of adult female grass shrimp Palaemonetes pugio. However, reproduction, measured by % gravid females and clutch size, was unaffected by food availability. It appears that female shrimp with limited food resources allocated energy to egg production at the expense of growth. Although differences were slight, female shrimp in limited food conditions had less total lipid in hepatopancreatic and ovarian tissues than females with excess food, indicating reduced energy reserves in female with limited food. Embryonic lipid class composition and elemental C and N levels were not affected by maternal ration, but hatching success was <60% in all treatments. Handling of adults may have resulted in poor embryo quality. Comparisons with embryos from laboratory cultures that were not frequently handled will indicate whether handling stress in adult shrimp can affect embryo quality and hatching success.