Ampharete

Abstract: The relations between sediment, water chemistry and bottom fauna were investigated with particular reference to the presence of indicator species. The resistance of such species to low oxygen contents and hydrogen sulphide and their correlation to bacterial pollution were studied. A bottom community of Nereis diversicolor Miiller, Scoloplos armiger Miiller, Capitella capitata (F.), Ampharete grubei Malmgren, Terebellides strdmi Sars, Macoma balthica (L.), Cardium lamarcki Reeve, Mya arenaria L. and Halicryptus spinulosus v. Siebold proved useful in indicating pollution in the Sound (Oresund). Pe3MoMe 14ccJieg0Barnicb B3aHMOCBAI3H MexKgy cocTaBoM

Abstract: Based on material collected during the BIOICE project off Iceland, the taxonomy and distribution of eight species of polychaetous annelids belonging to the genus Ampharete (Polychaeta: Ampharetidae) are reviewed. Five of these species were previously reported in the area: Ampharete acutifrons, Ampharete borealis, Ampharete finmarchica, Ampharete octocirrata and Ampharete petersenae; two are new to Icelandic waters: Ampharete baltica and Ampharete lindstroemi; and one is new to science: Ampharete villenai sp. nov. A. petersenae was found for the first time after the original description and is redescribed. A. villenai sp. nov. is primarily characterized by the size, shape and disposition of the paleae, a special kind of chaetae located on the first body chaetiger. Several body characters of high taxonomic relevance in Ampharetidae are reviewed under the SEM. The distribution of each species off the coast of Iceland and a key to all species recorded in European Boreo-Arctic waters is provided.

Abstract: Benthic macrofaunal samples were taken at 30 stations on the continental shelf and upper slope (32–1120 m) off the west coast of South Island, New Zealand, southeastern Tasman Sea (c. 41–43° S, 169–172° E). The area receives a high input (increasing southward) of river‐borne sediment, so fine‐grained sediments characterise the shelf and uppermost slope. Most samples were dominated by polychaetes (mean of 36% of individuals), with bivalves and amphipods usually the next most abundant major taxa (mean of c. 10–11 % of individuals). Polychaetes, molluscs and peracarid crustaceans together accounted for c. 11% of species collected. Four main station groups were identified by multivariate analysis: (1) 4 stations at 32–51 m on silty sand characterised by Sthenelais cf. chathamensis, Nephtys sp., Aglaophamus macroura, Paraprionospio sp., Ampharete kerguelensis, Diplocirrus sp. (all Polychaeta), Austrofusus glans (Gastropoda) and Maorimactra ordinaria (Bivalvia); (2) 12 stations at 87–297 m on sandy mud characte...

Abstract: Morphological and distributional observations on 11 of the 19 ampharetid species and subspecies recorded from British Columbia and Washington are presented. Hobsonia new genus and Sosanopsis hesslei new species are described, and remarks made on the generic diagnosis of Sosanopsis. Amage anops is studied from type material. Ampharete labrops, A. goesi brazhnikovi, Hobsonia florida, and Samytha californiensis are newly recorded for the Oregon biogeographic Province. Ampharete gagarae is shown to be restricted to deep water of the northeast Pacific and adjacent seas.