INVESTIGADORES
LOPEZ MAÑANES Alejandra Antonia
artículos
Título:
"Between-habitat comparison of digestive enzymes activities and energy reserves in the SW Atlantic euryhaline burrowing crab Neohelice granulata"
Autor/es:
PINONI,S.; IRIBARNE,O.; LÓPEZ MAÑANES A.
Revista:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
Editorial:
ELSEVIER SCIENCE INC
Referencias:
Año: 2011 vol. 158 p. 552 - 559
ISSN:
1095-6433
Resumen:
The digestive and metabolic characteristics at the biochemical level underlying between-habitat dietary shift
of the SW Atlantic euryhaline burrowing crab Neohelice granulata under natural conditions are unknown. We
made studies on adult males of N. granulata from the open mudflat and the vegetated saltmarsh in a SW
Atlantic costal lagoon (Mar Chiquita, 37°32′37°45′S; 57°19′57°26′W, Argentina). We determined and
compared amylase, maltase, sucrase, proteolytic, lipase and alkaline phosphatases activities in the
hepatopancreas; glycemia, and glycogen, free glucose, triglycerides and protein concentrations in
hepatopancreas, chela muscle, and anterior and posterior gills. The results show that N. granulata exhibits
characteristics and between-habitat differences at the biochemical level (i.e. high amylase and disaccharidase
activities, differences in total proteolytic, lipase and levamisole-insensitive AP activities in the hepatopancreas,
and in the concentrations of glycogen in the gills, triglycerides in the hepatopancreas and of protein in the chela
muscle) which could represent adaptive digestive and metabolic strategies to face the differences in
environmental conditions (i.e. food availability). The possible relationship between digestive and metabolic
characteristics and feeding patterns, type of food available and environmental conditions in each habitat is
discussed.
© 2011 Elsevier Inc. All rights reserved