Distribution Of Amphipoda Research Articles

Influence of environmental conditions on the distribution of Amphipoda, Talitridae, in the lagoon complex of Ghar El Melh (north‐east of Tunisia)

AbstractThe study of the spatiotemporal distribution of talitrid amphipods was carried out along a transect in three stations belonging to the lagoon complex of Ghar El Melh, namely the supralittoral zones of the old harbour of Ghar El Melh, the opposite to Boughaz and Sidi Ali Mekki lagoon. Four species belonging to Talitridae family with two different genera were identified at all stations. These species are Orchestia gammarellus, Orchestia mediterranea, Orchestia stephenseni and Platorchestia platensis. The first two species were collected during the four seasons. The study of the density showed that the most important global mean density in talitrid was found in the supralittoral zone of opposite to Boughaz. In addition, statistical analysis showed a significant difference in the seasonal distribution of amphipods based on plant associations. Furthermore, the highest diversity of talitrid was observed in the winter in the supralittoral zone of opposite to Boughaz and in summer in the supralittoral zones of Sidi Ali Mekki lagoon and the old harbour of Ghar El Melh. Results showed that at all stations, a highly significant correlation of amphipod community with Cymodocea banquette was observed. Moreover, principal component analysis showed that the distribution of the different species depends on climatic and edaphic factors.

AMPHIPODA (CRUSTACEA) OF KHARKOV REGION

This research was focused on distribution of Amphipoda in Kharkiv region. The list of Amphipoda species of Kharkiv region was composed. It includes species that belong to 5 genera of 2 families: Synurella ambulans (F. Muller, 1846), Gammarus pulex (Linnaeus, 1758), Gammarus lacustris (Sars, 1863), Pontogammarus robustroides (Sars, 1895) Pontogammarus obesus (Sars, 1896 ), Gmelina pusilla (Sars, 1896) and Corophium curvispinum (Sars, 1895). G. pusilla was registered in Kharkiv Region for the first time. The identification key for Amphipoda of Kharkov region was performed.

The Distribution of Amphipoda and Isopoda on the Exposed Shores of the Great Lakes

During the summer of 1974 an extensive survey of the shallow water (0-2 m) benthic fauna of the exposed Canadian shores of the Great Lakes was made. This report deals with the distribution of Amphipoda and Isopoda on various substrates in each lake. The amphipods were represented by Pontoporeia affinis, Hyalella azteca, Crangonyx gracilis, C. pseudogracilis, Gammarus fasciatus, G. lacustris and G. pseudolimnaeus. The isopod species were Asellus forbesi, A. intermedius, A. racovitzai and Lirceus lineatus. The distribution of each species is discussed and compared with previously published records.