Adaptive Differences in Digestive Enzyme Activity in the Crab Neohelice Granulata in Relation to Sex and Habitat

@article{Lancia2012AdaptiveDI,
  title={Adaptive Differences in Digestive Enzyme Activity in the Crab Neohelice Granulata in Relation to Sex and Habitat},
  author={Juan Pablo Lancia and Anal{\'i}a Ver{\'o}nica Fern{\'a}ndez Gimenez and Claudia C Bas and Eduardo D. Spivak},
  journal={Journal of Crustacean Biology},
  year={2012},
  volume={32},
  pages={940-948}
}
Neohelice granulata (Dana, 1851) is a semi-terrestrial burrowing crab that inhabits estuaries and saltmarshes feeding on grasses or sediment depending on the microhabitat they occupy (vegetated saltmarsh or bare mudflat). Specific cellulolytic, amylolytic, and proteolytic enzyme activities were analyzed in midgut gland homogenates of males and females from each microhabitat fed in the laboratory with Spartina densiflora leaves and sediment, respectively, in order to detect sex, food and… Expand
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References

SHOWING 1-10 OF 46 REFERENCES
Between-habitat comparison of digestive enzymes activities and energy reserves in the SW Atlantic euryhaline burrowing crab Neohelice granulata.
TLDR
The results show that N. granulata exhibits characteristics and between-habitat differences at the biochemical level which could represent adaptive digestive and metabolic strategies to face the differences in environmental conditions (i.e. food availability). Expand
Natural diet and feeding habits of Thalamita crenata (Decapoda, Portunidae)
TLDR
Gut content analysis reveals that Thalamita crenata is a generalistic predator, its diet being mainly composed of bivalves and slow-moving crustaceans, and stomach fullness was significantly higher in crabs collected at sunset than in those caught at dawn. Expand
Digestive enzyme spectra in crustacean decapods (Paleomonidae, Portunidae and Penaeidae) feeding in the natural habitat
TLDR
This work describes the profile of five proteases and four carbohydrases from the crustacean decapods Macrobrachium australiense, Scylla serrata, P. pelagicus and P. esculentus feeding in the natural habitat, to provide an indication of their digestive capabilities. Expand
Effect of pH, temperature and diet on digestive enzyme profiles in the mud crab, Scylla serrata
TLDR
The ability of the mud crab to modulate digestive enzyme activities may represent a mechanism to maximise access to essential nutrients when the dietary profile changes. Expand
Food utilisation and digestive ability of aquatic and semi-terrestrial crayfishes, Cherax destructor and Engaeus sericatus (Astacidae, Parastacidae)
TLDR
Differences in total cellulase and gastric mill morphology suggest that E. sericatus is better able to hydrolyse cellulose within plant material than C. destructor, which appears to be more efficient in grinding soft materials such as animal protein and algae. Expand
Digestive Enzymes in the Crayfish Cherax albidus: Polymorphism and Partial Characterization
TLDR
This work provides basic information to study the digestive abilities of crayfish and identifies several isoforms of digestive enzymes identified by gel electrophoresis. Expand
Digestive proteinases of Artemesia longinaris (Decapoda, Penaeidae) and relationship with molting.
TLDR
The results suggest that proteolytic activity in the hepatopancreas of A. longinaris is influenced by the molting cycle and will lead to understanding their nutritional needs and feeding ecology. Expand
Bacterial endosymbionts in Asellus aquaticus (Isopoda) and Gammarus pulex (Amphipoda) and their contribution to digestion
TLDR
The hypothesized enzymatic adaptation of crustacean freshwater detritivores to their food sources of terrestrial origin is confirmed and it is demonstrated that the isopod A. aquaticus, like its terrestrial relatives, contains endosymbiotic bacteria that contribute to digestive processes. Expand
Dietary Preference and Digestive Enzyme Activities as Indicators of Trophic Resource Utilization by Six Species of Crab
TLDR
Stomach contents in Nectocarcinus tuberculosus (velvet crab) and Carcinus maenas (green crab) suggest that these species are omnivorous, and each species of crab studied had a complex suite of digestive enzymes, the relative activities of which reflected individual and very different species-specific dietary niches. Expand
A review of feeding and nutrition of herbivorous land crabs: adaptations to low quality plant diets
This paper reviews the nutritional ecology, the digestive physiology, and biochemistry of herbivorous land crabs and the adaptations that they possess towards a diet of plant material. Land crabExpand
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