Results 221 to 230 of about 3,826 (231)

Laonice (Polychaeta, Spionidae) in the Arctic and the North Atlantic

Sarsia, 2003
Laonice Malmgren, 1867 species from the Arctic and the North Atlantic are revised. Existing types of five species recorded from the area are described. All available material has been used and cited. New approaches to the use of widely varying and size‐related numeric characters are put into practice.
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Secondary production ofPrionospio caspersi (Annelida: Polychaeta: Spionidae)

Marine Biology, 1990
The annual somatic production ofPrionospio caspersi Laubier was estimated, between July 1986 and 1987, at a sandy shallow-bottom station in the area facing the Po River Delta, Italy, where this species is one of the most abundant. Primary recruitment occurs in summer, and maturation of gametes the following spring.
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Polydora and related genera (Polychaeta: Spionidae) from the Grand Caribbean region

Journal of Natural History, 2008
The study of previously unidentified material of Spionidae from the Grand Caribbean region resulted in the discovery of five new species in four genera: Boccardia salazari sp. nov., Dipolydora anatentaculata sp. nov., D. contoyensis sp. nov., Polydora quintanarooensis sp. nov. and Pseudopolydora floridensis sp. nov.
Vı, Delgado-Blas, ctor H.
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Immunolocalization of a Gαq protein to the chemosensory organs of Dipolydora quadrilobata (Polychaeta: Spionidae)

Cell and Tissue Research, 2008
Chemoreception in marine invertebrates mediates a variety of ecologically important behaviors including defense, reproduction, larval settlement and recruitment, and feeding. The sensory pathways that regulate deposit-feeding activity by polychaetes living in sedimentary habitats are of particular interest because such feeding has profound effects on ...
Marlene Tsie, Sara M. Lindsay, Paul D. Rawson   +2 more
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Life History Patterns of Polychaete Species of the Family Spionidae

Journal of the Marine Biological Association of the United Kingdom, 1985
The reproductive morphology and larval development in Spionidae has been dealt with extensively by Soderström (1920), Hannerz (1956), Orrhage (1964). Simon (1967), Blake (1969) and Rice (1980). The family shows a considerable variation in gamete morphology, modes of sperm transfer and types of larval development.
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The Systematic Significance of Palp Morphologyin the Polydora Complex (Polychaeta: Spionidae)

Zoologischer Anzeiger - A Journal of Comparative Zoology, 2001
Abstract The palp morphology of Dipolydora coeca, D. quadrilobata, Polydora ciliata, P. cornuta and Pseudopolydora pulchra were studied with light and scanning electron microscope. Two new palp characters were found on the two species of Dipolydora : randomly scattered motile cirri and glandular holes.
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Ultrastructural studies of dorsal ciliated organs in Spionidae (Annelida: Polychaeta)

Hydrobiologia, 2003
The distribution and structural components of dorsal ciliated organs (dco) in 15 species of the Spionidae were studied by scanning- and transmission electron microscopy. Based on the distribution patterns of dco, the investigated species are divided into four non-systematic groups: (I) paired anterior dco, (II) paired dco extending posteriorly for ...
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NEOTENY IN LARVAE OF TWO SPECIES OF SPIONIDAE

Canadian Journal of Zoology, 1963
C. Berkeley, E. Berkeley
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7.4 Sedentaria: Spionida/Sabellida

2020
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Spionida James A Blake

2006
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