Caprella acanthogaster Mayer, 1890 sensu lato (Crustacea: Amphipoda: Caprellidae) has previously been recorded from temperate and cold waters of Far East Asia Australia. A detailed morphological comparison specimens collected Gippsland Lakes (Victoria, Australia) Otsuchi Bay (Tohoku District, Japan) revealed that C. these regions comprises two separate species. stricto is confirmed to be distri...

Besides conspicuous changes in behaviour, manipulative parasites may also induce subtle physiological effects in the host that may also be favourable to the parasite. In particular, parasites may be able to influence the re-allocation of resources in their own favour. We studied the association between the presence of the acanthocephalan parasite, Pomphorhynchus laevis, and inter-individual var...

The present study focuses on the sensitivity among freshwater invertebrate species to acidic stress. Three common macroinvertebrate species in the Vosges Mountains (North-Eastern France), Gammarus fossarum (Amphipoda), Hydropsyche pellucidula (Trichoptera) and Dinocras cephalotes (Plecoptera) were exposed for 24, 72 and 120 h to natural acidified water (pH=4.73+/-0.08, [Ca2+]=39.1+/-0.6 micromo...

A new species of the genus Liropus (Crustacea, Amphipoda, Caprellidae) is described based on specimens collected from a small cave of Santa Catalina Island, California. The new species, Liropus minusculus, can be distinguished from all its congeners mainly by the presence of anterolateral projections on pereonites 2, 3, and 4 (males), pereopod 5 one-articulate (although with a second article in...

Diet composition\ feeding rhythm\ gastric evacuation rate and daily ration were investigated in juvenile Mullus surmuletus "Linneo\ 0647#[ Fish were collected in the lagoon of the Stag! none di Marsala in western Sicily\ in July 0884\ during a 13 h sampling period[ Copepoda\ Polychaeta\ Amphipoda and Tanaidacea were shown to be the most frequent prey items[ The feeding index values showed two d...