Results 251 to 260 of about 31,894 (267)

Polychaete diversity in the Scotia Arc benthic realm: Are polychaetes tracers for faunal exchange?

Polar Biology, 2015
The Scotia Arc is the only shallow-water and island bridge linking nowadays Patagonia and the Antarctic. The Antarctic Circumpolar Current as an oceanographic peculiarity makes this region an interesting biogeographic transition zone, because this frontal system traditionally is said to isolate the Antarctic fauna from that of the adjacent northern ...
Américo Montiel, Eduardo Quiroga, Dieter Gerdes, Brigitte Ebbe   +3 more
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The Coelomocytes of Nereid Polychaetes

1974
The coelomic fluids of most polychaetes, or marine annelids, contain numerous mobile cells which have phagocytic abilities. Many investigators have observed that coelomocytes of several species of polychaetes take up foreign matter and have suggested that they probably remove particulate wastes. This applies equally to nereids (Dehorne, 1922a,b; Romieu,
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Ariciid polychaetes in Australia

1960
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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A laboratory investigation of the effect of a terebellid polychaete on the survivorship of nereid polychaete larvae

Journal of Experimental Marine Biology and Ecology, 1980
Abstract A controlled laboratory experiment showed that the survivorship of the larvae of Nereis vexillosa Grube is significantly lowered by the feeding activities of Eupolymnia heterobranchia (Johnson). Ingestion of larvae by Eupolymnia is suggested as the mechanism of this interaction. E.
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The polychaete fauna of the Gold Coast

1955
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Chaetae and chaetogenesis in polychaetes (Annelida)

Hydrobiologia, 2005
Annelid chaetae are epidermal extracellular structures that are in general clearly visible from the exterior. Their structure is highly diverse, especially within the Polychaeta, and each species shows a specific pattern of chaetae. Chaetae have therefore gained immense significance for species determination, making them the best studied structures in ...
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Molecular systematics of polychaetes (Annelida)

Hydrobiologia, 2005
Some progress has been made in the field of molecular systematics of polychaetes over the past couple of years. In particular, phylogenetic analyses of sequence data from the 18S rRNA gene have included increasing numbers of taxa, and explicit hypothesis testing of sister-group relationships is being incorporated into the most recent studies.
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Sense organs in polychaetes (Annelida)

Hydrobiologia, 2005
Polychaetes possess a wide range of sensory structures. These form sense organs of several kinds, including the appendages of the head region (palps, antennae, tentacular cirri), the appendages of the trunk region and pygidium (parapodial and pygidial cirri), the nuchal organs, the dorsal organs, the lateral organs, the eyes, the photoreceptor-like ...
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Culture of Marine Polychaetes

2015
The Polychaeta or polychaetes are a class of annelid worms, generally marine. Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. Indeed, polychaetes are sometimes referred to as bristle worms. More than 10,000 species are described in this class.
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ON THE STRUCTURE AND FUNCTIONS OF POLYCHAETE SEPTA

Proceedings of the Zoological Society of London, 1962
There is considerable interspecific variation in the detailed structure of the intersegmental septa of polychaetes. In a few worms, septal muscles are specially developed to produce dorso‐ventral flattening of the body, or to provide horizontal bracing of the thin intersegmental lateral body‐wall. In the majority of species examined, the septa are thin
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