Habitat
provided by Invertebrates of the Salish Sea
Fine sand
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Distribution
provided by Invertebrates of the Salish Sea
Geographical Range: SE Alaska to central California, + Yellow Sea and Japan in the western Pacific.
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Habitat
provided by Invertebrates of the Salish Sea
Depth Range: Low intertidal to 40 m.
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Comprehensive Description
provided by Invertebrates of the Salish Sea
Members of family Hesionidae have segments at least as wide as they are long, and without dorsal elytra, paleae, or other setae. They have two prostomial anteroventral palps and peristomial tentacular cirri. Enlarged ventral cirri on the first several segments is a synapomorphy for this family. Micropodarke dubia has palps with 2 segments of approximately equal length. Some of its setae are compound. It has 2 prostomial antennae and two pairs of eyes. The pharynx has no jaws nor teeth. The species has 6 pairs of tentacular cirri, 4 of which are on the peristomium. There are large lobes at the bases of the parapodia. The pygidium has two cirri. This individual is colored creamy white ventrally and has brown speckles dorsally.
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Look Alikes
provided by Invertebrates of the Salish Sea
How to Distinguish from Similar Species: Kefersteinia cirrata and Podarkeopsis brevipalpa have 8 pairs of tentacular cirri. Ophiodromus pugettensis has 3 prostomial antennae.
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Comprehensive Description
provided by Invertebrates of the Salish Sea
Biology/Natural History: I found this individual crawling through the sediment attached to the rhizome of some subtidal Zostera marina eelgrass. The family description on the Tree of Life says that the few species studied from the family seem to be predators. However, this species has no jaws nor teeth in its pharynx, and its gut was stuffed full of sediment when I found it. The sediment was gradually voided over several hours as I studied it.
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Micropodarke dubia
(
Dutch; Flemish
)
provided by wikipedia NL
Micropodarke dubia is een borstelworm uit de familie Hesionidae. Het lichaam van de worm bestaat uit een kop, een cilindrisch, gesegmenteerd lichaam en een staartstukje. De kop bestaat uit een prostomium (gedeelte voor de mondopening) en een peristomium (gedeelte rond de mond) en draagt gepaarde aanhangsels (palpen, antennen en cirri).
Micropodarke dubia werd in 1925 voor het eerst wetenschappelijk beschreven door Hessle.
Bronnen, noten en/of referenties Geplaatst op:
15-12-2011
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen.
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Distribution
provided by World Register of Marine Species
Micropodarke dubia is mainly in warm-temperate and tropical regions, with no current records from the whole of the Atlantic, the Pacific coast of South America, the Arctic, and the Antarctic.
Pleijel, Fredrik and Rouse, G.W. 2005. A revision of Micropodarke (Psamathini, Hesionidae, Polychaeta). Journal of Natural History 39(17): 1313-1325.
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Habitat
provided by World Register of Marine Species
Present from the intertidal down to 450 m, and occurs in well-sorted sand and muddy sand; it may occur in high densities on sandy beaches.
Pleijel, Fredrik and Rouse, G.W. 2005. A revision of Micropodarke (Psamathini, Hesionidae, Polychaeta). Journal of Natural History 39(17): 1313-1325.
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- WoRMS Editorial Board