- Source: Ophryotrocha craigsmithi
Ophryotrocha craigsmithi is a species of polychaete worm. O. craigsmithi is named after Craig R. Smith. This species is similar to Palpiphitime lipovskyae and O. Platykephale, among others, in having branchial structures dorsally and ventrally. It differs from O. platykephale in the shape of its prostomium and parapodia. Palpiphitime lipovskyae has jaws of both P- and K-type, while no specimens of O. craigsmithi have been found with K-type jaws thus far. Ophryotrocha craigsmithi differs from P. lipovskyae genetically, but also by the presence of a prominent ventral chaetal lobe with a bulging simple chaeta in the former.
Description
It has a pale red or transparent colour, with red branchial structures on its dorsal and ventral sides. It has an elongated body, tapering at its posterior end. Its prostomium has digitiform paired antennae inserted dorsally. Its palps are papilliform and with palpophores, inserted laterally on its prostomium. It possesses no eyes, its mandibles being L-shaped, counting with anterior serration. Its maxillae exhibits 7 free denticles. It also counts with two peristomial segments without setae. Its parapodia has dorsal ventral cirri, with simple supraacicular chaetae and compound subacicular chaetae with serrated blades. Its pygidium has a terminal anus and two pygidial cirri.
Distribution
It was first found in a minke whale carcass at a depth of 125 metres (410 ft) in the Koster area in Sweden, and from sediment between 84 and 150 metres (276 and 492 ft) beneath a fish farm in Hardangerfjord in Norway.
References
Further reading
Taboada, Sergi, et al. "Two new Antarctic Ophryotrocha (Annelida: Dorvilleidae) described from shallow-water whale bones." Polar biology 36.7 (2013): 1031–1045.
Murray, H. M., et al. "Histology and mucous histochemistry of the integument and body wall of a marine polychaete worm, Ophryotrocha n. sp.(Annelida: Dorvilleidae) associated with steelhead trout cage sites on the south coast of Newfoundland." Journal of Marine Biology 2012 (2012).
Paxton, Hannelore, and Adam Davey. "A new species of Ophryotrocha (Annelida: Dorvilleidae) associated with fish farming at Macquarie Harbour, Tasmania, Australia." Zootaxa 2509 (2010): 53–61.
External links
"Ophryotrocha craigsmithi". The Encyclopedia of Life.
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