02058nas a2200157   4500008004100000022001400041245008200055210006900137260002900206300001400235490000700249520154800256100002101804700002001825856005501845       2011                        eng d  a1463-640900aPhylogenetics of Acrocirridae and Flabelligeridae (Cirratuliformia, Annelida)0 aPhylogenetics of Acrocirridae and Flabelligeridae Cirratuliformi  bBlackwell Publishing Ltd  a204–2190 v403 aOsborn, K. J. & Rouse, G. W. (2010). Phylogenetics of Acrocirridae and Flabelligeridae (Cirratuliformia, Annelida). —Zoologica Scripta, 40, 204–219.When seven deep-sea, swimming cirratuliforms were recently discovered, the need for a thorough phylogenetic hypothesis for Cirratuliformia was clear. Here, we provide a robust phylogenetic hypothesis for the relationships within Acrocirridae and increase the taxon sampling and resolution within Flabelligeridae based on both molecular (18S, 28S, 16S, COI and CytB) and morphological data. Data partitions were analyzed separately and in combination. Acrocirridae and Flabelligeridae were reciprocally monophyletic sister groups when rooted by cirratulids. The seven recently discovered species form a clade within Acrocirridae and will be designated as four genera based on phylogenetic relationships and apomorphies. A revised diagnosis is provided for Swima, restricting the genus to three species distinguished by a thick gelatinous sheath, transparent body, simple nuchal organs, a single medial subulate branchia, and four pair of small segmental branchiae modified as elliptical, bioluminescent sacs. Helmetophorus and Chauvinelia are maintained as separate genera based on morphological differences. Evidence for flabelligerid branchiae being segmental is provided, the papillae on segment two of most acrocirrids is confirmed to be the nephridiopores, and scanning electron microscopy is used to examine acrocirrid spinous chaetae in comparison with flabelligerid segmented chaetae.1 aOsborn, Karen, J1 aRouse, Greg, W.  uhttp://dx.doi.org/10.1111/j.1463-6409.2010.00460.x02791nas a2200265   4500008004100000022001400041245007600055210006900131260002900200300001400229490000800243520200700251653001602258653002002274653001302294653001102307653001302318653001202331653002702343653003202370100002102402700002702423700002002450856005502470       2011                        eng d  a1096-364200aSwima (Annelida, Acrocirridae), holopelagic worms from the deep Pacific0 aSwima Annelida Acrocirridae holopelagic worms from the deep Paci  bBlackwell Publishing Ltd  a663–6780 v1633 a<p>Two new species of Swima, a recently established genus of annelid worms, are introduced, one from deep water off the North American West Coast and the other from the Philippines. The acrocirrid genus now contains three named species, Swima bombiviridis, Swima fulgida sp. nov., and Swima tawitawiensis sp. nov.Swima are holopelagic, occurring only in the water column, and thus far have only been observed below 2700&nbsp;m. The worms are relatively large, sometimes reaching over 30&nbsp;mm in length and 5&nbsp;mm in width. They have gelatinous bodies and fans of long swimming chaetae, which are flattened into paddles in S. tawitawiensis sp. nov. Members of Swima are distinguished from other swimming acrocirrids by their transparent bodies, single medial subulate branchiae, and simple nuchal organs that do not skirt the bases of lateral subulate branchiae. Swima fulgida sp. nov. is distinguished from other members of the genus by its darkly pigmented anterior gut, whereas S. tawitawiensis sp. nov. is distinguished by possessing three subulate head appendages instead of just one and by the shape of its noto- and neurochaetae. Swima species possess four pairs of elliptical, transformed segmental branchiae that produce green bioluminescence when autotomized. These &lsquo;bombs&rsquo; were observed in various states of regeneration on a single individual. Swima are neutrally buoyant, often observed hanging immobile in the water column, and are active, agile swimmers. Although not previously documented in the literature, these worms are not rare in the deep water column. Since the worms were first noticed in 2001, they have been observed on more than half of the Monterey Bay Aquarium Research Institute&rsquo;s midwater remotely operated vehicle dives that went to sufficient depth. The discovery of Swima underscores our lack of knowledge of deep pelagic fauna.&copy; 2011 The Linnean Society of London, Zoological Journal of the Linnean Society, 2011, 163, 663&ndash;678.</p>
10aCelebes Sea10aCirratuliformia10adeep-sea10agelata10amidwater10apelagic10aSwima fulgida sp. nov.10aSwima tawitawiensis sp. nov1 aOsborn, Karen, J1 aHaddock, Steven, H. D.1 aRouse, Greg, W.  uhttp://dx.doi.org/10.1111/j.1096-3642.2011.00727.x00729nas a2200169   4500008004100000245005800041210005000099260001500149300001400164490000800178100002100186700002700207700002100234700002400255700002000279856026000299       2009                        eng d00aDeep-Sea, Swimming Worms with Luminescent “Bombs”0 aDeepSea Swimming Worms with Luminescent Bombs  c2009/08/21  a964 - 9640 v3251 aOsborn, Karen, J1 aHaddock, Steven, H. D.1 aPleijel, Fredrik1 aMadin, Laurence, P.1 aRouse, Greg, W.  uhttp://www.sciencemag.org/content/325/5943/964.abstractN2 - By using remotely operated vehicles, we found seven previously unknown species of swimming annelid worms below 1800 meters. Specimens were large and bore a variety of elaborate head appendages. I