A new troglobitic species of the amphipod family Artesiidae Holsinger, 1980 is described from a cave in the municipality of Santa Maria da Vitória, in the Brazilian state of Bahia, northeastern Brazil. Spelaeogammarus titan sp. nov. differs from the others in the genus by its body length, rising up to 18.3 mm, the antenna 1 with accessory flagellum 6-articulate, propodus of the first gnathopod ...

Bioturbation is a central transport process for ecosystem functioning, especially in large soft sediment habitats like the Wadden Sea. The amphipod C. volutator dominant bioturbator Sea, due to its great abundance and almost continuous particle movement. Expedition or loss of bioturbation activity could thus hold ramifications functioning within sediments, carbon sequestration nutrient recyclin...

A new podocerid amphipod, Leipsuropus seisuiae sp. nov., from 338-340 m depth in the Kumano Sea, Japan, Northwestern Pacific, is described. This deepest record of any species. nov. distinguished four other congeneric species having: i) pereonites 2-5 each with five narrow spiniform projections on tergal plate, ii) one dorsal tubercle telson, and iii) small, proximal, denticulate projection gnat...

Recent findings suggest that grouping with conspecifics is part of the behavioural defences developed by amphipod crustaceans to face predation risk by fish. Amphipods commonly serve as intermediate hosts for trophically transmitted parasites. These parasites are known for their ability to alter intermediate host phenotype in a way that promotes predation by definitive hosts, where they reprodu...

Intense herbivory can alter habitat characteristics, and grazing on reproductive structures can reduce plant fitness and long-term population stability. Herbivory on seagrasses is often limited to epiphytes; however, direct grazing has been observed recently in several systems. In San Francisco Bay, California, we documented extensive damage to leaves and especially inflorescences of eelgrass Z...