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The influence of habitat, season and tidal regime in the activity of the intertidal crab Neohelice (=Chasmagnathus) granulata
The working hypothesis is that the activity of N. granulata would vary according to the diverse environmental conditions encountered at geographical and local scales, and may explain why this is the only semiterrestrial crab inhabiting latitudes higher than 40°S in South America. Expand
Influence of tidal regime, diurnal phase, habitat and season on feeding of an intertidal crab
Both diet and feeding activity of this crab seem to be flexible traits adapted to different combinations of physical and biological factors, which varied according to spatial and/or temporal changes in some natural cycles. Expand
Evolution and phylogenetic relationships in subterranean rodents of the Ctenomys mendocinus species complex: Effects of Late Quaternary landscape changes of Central Argentina
It is proposed that the pattern of distribution of haplotype diversity in the C. mendocinus species complex corresponds to a scenario of mild local differentiation with subsequent expansion to the current distribution ranges, suggesting that glacial-interglacial cycles of Late Quaternary, and the consequent variation in the aridity of Central plains in Argentina, had strong effects on the evolution and cladogenesis of this species complex. Expand
Adaptive Differences in Digestive Enzyme Activity in the Crab Neohelice Granulata in Relation to Sex and Habitat
It is concluded that N. granulata has the ability to adapt digestive enzyme production to support its physiological and metabolic needs based on the different food sources available at each microhabitat. Expand
A New Species of Caudotestis (Digenea: Opecoelidae) Parasitizing the Horsefish, Congiopodus peruvianus (Scorpaeniformes: Congiopodidae) from the Patagonian Shelf, Argentina
Abstract: A new species of digenean, Caudotestis patagonensis n. sp. (Digenea: Opecoelidae), is described and illustrated based on specimens collected from the intestine of the horsefish, CongiopodusExpand
Effect of Propolis Oral Intake on Physiological Condition of Young Worker Honey Bees, Apis Mellifera L.
A broader understanding of the multiple roles of propolis in the health of the honey bee colonies could be obtained by studying the ways in which it is processed and metabolized and the effect that generates in another physiological responses. Expand
Morphological and genetic confirmation of Jassa slatteryi (Crustacea: Amphipoda) in a harbour of Argentina
A morphological comparison with the original description and a genetic analysis are made to corroborate the identification of specimens and the report of range expansion along the South-western Atlantic coast is discussed. Expand
Food manipulation and selection in the omnivorous grapsoid crab Neohelice granulata (Decapoda: Varunidae)
N. granulata seems to be an effective deposit feeder even though it lacks the characteristic mouthparts commonly associated with this type of food source, and direct evidence of food item concentration from sediment was revealed by analysis of the C and N content of sediment and feces. Expand