When conditions are stressful, reproduction and population growth are reduced, but when favourable, reproduction and population size can boom. Theory suggests climate change is an increasingly stressful environment, predicting extinctions or decreased abundances. However, if favourable conditions align, such as an increase in resources or release from competition and predation, future climate c...

Arthur, J. and J. Eaton (1971). "CHLORAMINE TOXICITY TO THE AMPHIPOD GAMMARUS PSEUDOLIMNAEUS AND THE FATHEAD MINNOW(PIMEPHALES PROMELAS)." amphipods (gammarus pseudolimnaeus) were subjected to 96 hr and 15 week exposures, and fathead minnows (pimephales promelas) to a 21 week exposure of various chloramine concentrations under continuous flow conditions. The most marked sublethal effects were r...

A new species of lysianassid amphipod belonging to the genus Socarnes Boeck was collected from Korean coastal waters. This is the first record of the genus Socarnes from Korea. The new species is fully illustrated and extensively compared with related species. A key to Socarnes speciesis provided.

The family Endevouridae is reviewed and four new species from the two genera, Endevoura and Ensayara, are described from Australian and Japanese waters. All species are diagnosed and the type species of Endevoura (End. mirabilis Chilton, 1921) and Ensayara (Ens. ramonella J.L. Barnard, 1964), respectively, are redescribed and illustrated. A key to the 19 known world species of Endevouridae is p...

The spatial and temporal effects of hot seawater (60-70oC) from a power station on nearby soft-bottom communities were analyzed in the protected area “Sebadales del sur de Tenerife” (SE coast of Tenerife, Canary Islands, NE Atlantic Ocean). Sediment samples were taken during summer 2003 and winter 2004 from 12 to 20 m depth. The highest macrofaunal abundance and species richness were found in t...

Toxicity-based sediment quality guidelines (SQGs) are often used to assess the potential of sediment contamination to adversely affect benthic macrofauna, yet the correspondence of these guidelines to benthic community condition is poorly documented. This study compares the performance of 5 toxicity-based SQG approaches to a new benthos-based SQG approach relative to changes in benthic communit...

Freshwater biodiversity and ecosystem integrity are under threat from biological invasions. The "killer shrimp" Dikerogammarus villosus is a highly predatory amphipod that has spread readily across Central Europe and recently the UK and its arrival has been associated with the significant loss of resident species. Despite this, studies of its behavioral ecology are sparse, even though its behav...

Ten new species of the genus Gammarus are described from Yunnan-Guizhou Plateau, Southwest China, including Gammarus amabilis sp. nov., G. citatus sp. nov., G. echinatus sp. nov., G. egregius sp. nov., G. eliquatus sp. nov., G. hirtellussp. nov., G. margcomosus sp. nov., G. rivalis sp. nov., G. silendus sp. nov. and G. tranquillus sp. nov. Four of them are stygobite and with no eyes. Detailed i...

A new Ponto-Caspian species of the genus Echinogammarus Stebbing, 1899 (Amphipoda: Gammaridae), E. mazestiensis sp. n., is described from estuary Mazesta River, Sochi Area, southwestern Caucasus. The can be clearly separated related ischnus (Stebbing, 1899) and trichiatus (Martynov, 1932) by a significantly smaller size mature specimens various morphological features. Molecular genetic analysis...