Results 111 to 120 of about 407 (136)

Photoreceptive organs in larvae of Spionidae (Annelida) and Sipuncula

Journal of Zoology, 2006
AbstractA pair of spherical unpigmented ocelli in addition to pigmented eyes have been observed in the anterior part of the prostomium in larvae of more than 40 species of Spionidae examined alive with light microscopy. Ocelli become visible in larvae at the one‐ to three‐segment stage, increase in size as growth proceeds, and probably disintegrate in ...
V. I. Radashevsky, V. I. Radashevsky, Alvaro Esteves Migotto   +2 more
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A new species of Rhynchospio (Annelida: Spionidae) in South Africa [PDF]

Marine Biodiversity, 2018
More than 60% of the spionid polychaetes recorded in South Africa to date have type localities from outside the region. One of these is Rhynchospio glutaea (Ehlers, 1897), originally described from Argentina, which was suggested to have arrived in Table Bay via shipping. Recently specimens conforming to the description of R.
Lee-Gavin Williams, Lee-Gavin Williams, Tony Henninger, Carol A. Simon   +3 more
openaire   +1 more source

Nocturnal Swimming of Scolecolepides viridis (Polychaeta: Spionidae)

Estuaries, 1980
AdultScolecolepides viridis were collected by nocturnal plankton tows in the Lafayette River, Norfolk, Virginia. All adults (40–70 mm) were filled with ripe gametes. Swimming individuals were collected only at night on ebb tides. Large (36–60 setigers) post-metamorphic worms were also collected in the plankton.
Gary H. Tourtellotte, R. Michael Ewing, Daniel M. Dauer, H. Russell Barker   +3 more
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Spionidae (Annelida: Polychaeta) from the Aegean Sea (eastern Mediterranean) [PDF]

Italian Journal of Zoology, 2011
Abstract The present paper deals with spionid species (Spionidae) collected from various depths (4–183 m) and biotopes at 100 stations along the eastern part of the Aegean Sea in June–September 2000. A total of 35 species and 16 genera were identified, of which two species (Laonice norgensis and Spiophanes algidus) are new to the Mediterranean fauna ...
Cinar, M. E., Dagli, E., Ergen, Z.
openaire   +1 more source

Taxonomic catalogue of the Spionidae (Annelida: Polychaeta) of the Grand Caribbean

Zootaxa, 2011
The aim of this study was to provide a revised taxonomic catalogue of Spionidae species recorded from the Grand Caribbean. The names included were compiled from the checklists of Salazar-Vallejo (1996) and Perkins and Savage (1975). Names were revised and updated based on recent revisions.
Víctor Hugo Delgado-Blas, Patricia Salazar-Silva   +1 more
openaire   +3 more sources

Revision of Marenzelleria Mesnil, 1896 (Spionidae, Polychaeta)

Sarsia, 2004
Marenzelleria is revised on the basis of material from the Arctic, North America, Europe and the Far East. Types of all species included in the genus are examined. Five species are registered. Marenzelleria neglecta sp. nov. is described from the coastal waters of the southern Baltic. Two species, M. arctia and M. wireni, occur in the Arctic, whereas M.
A. V. Sikorski, A. Bick
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Reproduction and larval development of Marenzelleria viridis (Polychaeta: Spionidae)

Marine Biology, 1995
The pelagic larvae of the polychaete Marenzelleria viridis (Verrill, 1873) are newcomers among the meroplankton of the Baltic Sea, where they sometimes achieve an abundance of up to 21x106 ind m-3 near the coast, especially in late autumn and even in winter.
A. Bick, Ralf Bochert
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Molecular analysis of the Pygospio elegans group of species (Annelida: Spionidae)

Zootaxa, 2016
Pygospio elegans Claparède, 1863, the type species of the genus Pygospio, was originally described from Normandy, France, and later widely reported from boreal waters in the northern hemisphere. Sequence data of four gene fragments (2576 bp in total) of the mitochondrial 16S rDNA, nuclear 18S and 28S rDNA, and Histone 3 have shown that individuals from
Radashevsky, Vasily I., Pankova, Victoria V., Neretina, Tatyana V., Stupnikova, Alexandra N., Tzetlin, Alexander B.   +4 more
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A new Laubieriellus species (Annelida, Spionidae) from Western Australia

Zootaxa, 2018
 A new annelid species within the Prionospio- complex (Spionidae), Laubieriellus cacatua sp. nov., is described from material collected from the continental slope off the western margin of Australia. Laubieriellus cacatua sp. nov. is distinguished by having dorsal crests from chaetigers 6 to 11 and ventral crests on chaetigers 2 to 11.
Erickson, Ricky-Lee, Wilson, Robin S.
openaire   +4 more sources

A twin of Polydora hoplura (Annelida: Spionidae) from the Arabian (Persian) Gulf, with review of primers used for barcoding of Spionidae

Zootaxa
The spionid polychaete Polydora hoplura Claparède, 1868 has been widely recorded boring in shells of abalone, oysters, clams, barnacle tests and sponges in temperate and subtropical waters. Molecular studies have suggested conspecificity of individuals collected worldwide but showed high genetic variability of the species with the highest diversity of ...
Radashevsky, Vasily I., Al-Kandari, Manal, Malyar, Vasily V., Pankova, Victoria V.   +3 more
openaire   +2 more sources