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Showing 1 to 10 of 10 for “"Spionidae"”.
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Studies on the reproduction and larval biology of Polydora Giardi Mesnil (Polychaeta: Spionidae)
There are no published accounts of larval development for P. giardi, although Mesnil (1896) determined his populations to be simultaneous hermaphrodites. The present paper describes aspects of the reproductive biology and larval development of P. girardi and presents descriptions and illustrations …
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Sediment-associated cues for larval settlement of Polydora cornuta and Streblospio benedicti (Polychaeta, Spionidae)
Patchy distribution of infaunal polychaetes may result from active site selection of larvae guided by sediment associated bacterial cues. This hypothesis was tested in still water laboratory settlement assays with and without choice option for larvae of two spionid polychaetes with indirect …
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The ecology and reproductive cycle of Pygospio elegans claparède (Polychaeta: spionidae) from Tomales Bay, California
<p>Pygospio elegans Claparede (1863) is a relatively small, inconspicuous intertidal Spionid polychaete (10 to 15 mm in length) having approximately 50 to 60 body segments. The species occurs in high intertidal sand flats along the central California coast.</p><p>Pygospio elegans is one of three …
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Distribuição espaço-temporal de Scolelepsis cf. squamata (Muller, 1808) (Polychaeta: Spionidae) como ferramenta para estudos da dinâmica sedimentar costeira
A population of the spionid polychaete Scolelepis cf. squamata was studied on Dois Rios beach, an embayed oceanic beach located at Ilha Grande (a coastal island), at the southeastern Brazilian coast. The relationship between beach morphodynamics and the spatial-temporal distribution of this species …
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Do microbial or biochemical settlement cues on the sediment surface mediate larval settlement of Polydora cornuta and Streblospio benedicti (Polychaeta, Spionidae)?
Distinctive, patchy abundance patterns of spionid polychaetes i.e. Polydora cornuta and Streblospio benedicti with indirect larval development were found in sediments of tidal flats in the German Wadden Sea. These patterns were not explicable through grain size or other sediment parameters. This …
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Taxonomy and biology of deep-sea polychaetes: temporal variability in polychaete assemblages of the abyssal NE Atlantic Ocean
… the two most abundant families: Cirratulidae and Spionidae. 15 different morphotypes of Cirratulidae and 13 of Spionidae were recognized and described. For Cirratulidae eight morphotypes belonged to Chaetozone, there were six species of Aphelochaeta and one of Tharyx. For Spionidae three …
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Sistema planctônico da região do emissário submarino de esgotos de Ipanema, Rio de Janeiro, RJ, populações zooplanctônicas: Annelida Polychaeta
… belonging to the benthonic families Polynoidae, Spionidae and Poecilochaetidae are studied, as well as the stoloniferous stages of the Syllidae family (stages Polybostrichus and Chaetosyllis).
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Factors Shaping Macrofaunal Polychaete Communities in the Gulf of Mexico
… species belonging to the Cirratulidae and Spionidae in the GoM. The GoM, being a semi-enclosed ocean basin, offers complex topographic features and hydrographic processes. Comparisons of the overall polychaete diversity and richness patterns from this study for this region indicate a strong …
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The relationship between sediment composition and infaunal polychaete communities along the southern coast of Namibia
… in the Ampharetidae, Capitellidae, Maldanidae, Spionidae, Lumbrineridae, Flabilligeridae, Nephtyidae, Pectinariidae and Onuphidae. Multi-variate analyses using PRIMER indicated that communities were structured by mud (45 μm) and very fine sand (45 - 63 μm) and gravel (> 710 μm). Mud and gravel, …
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Conservation of polychaete biodiversity within the Port Stephens-Great Lakes Marine Park
… did not differ. High abundance of Spio pacifica (Spionidae) within the D. australis habitat, high abundance of Lumbrineris cf latreilli (Lumbrineridae) in sand habitat, and differences in the abundance of Mediomastus australiensis (Capitellidae) were responsible for the dissimilarity between the …