Academic literature on the topic 'Simple ventral chaeta'

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Journal articles on the topic "Simple ventral chaeta"

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Musk, Will, Sarah Faulwetter, and Paul McIlwaine. "First record of Streptosyllis nunezi Faulwetter et al., 2008 (Annelida, Syllidae) from the United Kingdom, and amendment to the genus Streptosyllis Webster & Benedict, 1884." ZooKeys 582 (April 21, 2016): 1–11. https://doi.org/10.3897/zookeys.582.8006.

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During a benthic survey of a Marine Conservation Zone located on the Skerries Bank in the English Channel off the south-west coast of England, three specimens of Streptosyllis nunezi Faulwetter et al., 2008 were found. This is the second ever record of the species after its original description, and the first record from waters around the U.K. and a significant northerly range extension for a species previously only recorded from the Canary Islands and the Mediterranean Sea. A single simple ventral chaeta in each of the two posterior-most segments was discovered in this and two other species o
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SEDICK, SAFIYYA, and CAROL SIMON. "Three new species of Syllis Savigny in Lamarck, 1818 (Annelida: Syllidae) from the south coast of South Africa." Zootaxa 4688, no. 4 (2019): 585–98. http://dx.doi.org/10.11646/zootaxa.4688.4.10.

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Over the last five decades, only two new species of Syllis (Syllidae, Annelida) have been described from South Africa, suggesting a greatly underestimated richness and the expectation that many more indigenous species still remain undescribed. In this paper, we describe three new species from algal turf along a rocky shore on the south coast of South Africa. All three species are characterised by having pseudo-simple chaetae by loss of blade and enlargement of shafts together with compound heterogomph bidentate falcigers. Syllis zahri sp. nov. (up to 5 mm long) is characterised by light pink t
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RIERA, RODRIGO, JORGE NÚÑEZ, and MARÍA D. C. BRITO. "Parapionosyllis (Polychaeta: Syllidae: Exogoninae) from Tenerife (Canary Islands, Spain) with description of a new species and new records." Zootaxa 1110, no. 1 (2006): 17. http://dx.doi.org/10.11646/zootaxa.1110.1.2.

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Three species of Parapionosyllis: P. minuta (Pierantoni, 1903), P. macaronesiensis Brito, Núñez & San Martín, 2000 and a new species P. abriguensis, were recorded from shallow subtidal sandy substrates of Tenerife. The new species is characterized by having bidentate ventral simple chaetae and a marked dorso-ventral gradation in the length of the compound chaetae. Data on the ecology of these species, as well as a key for all Parapionosyllis known from the Canary Islands are provided.
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Olivier, Frederic, Paulo Lana, Veronica Oliveira, and Tim Worsfold. "Dysponetus joeli sp. nov. (Polychaeta: Chrysopetalidae) from the north-east Atlantic, with a cladistic analysis of the genus and a key to species." Journal of the Marine Biological Association of the United Kingdom 92, no. 5 (2012): 989–96. http://dx.doi.org/10.1017/s0025315412000562.

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We describe Dysponetus joeli sp. nov. from shallow maerl habitats in the north-east Atlantic (English Channel and Bay of Biscay). Dysponetus joeli differs from congeneric species by a unique combination of characters, including a large syllid-like pharynx, 2–4 simple serrated neurochaetae (closely similar to notochaetae, but much smaller and more delicate), D-shaped chaetal spines and ventral cirri on the third segment. A phylogenetic parsimony analysis based on morphological traits suggests that Dysponetus is not monophyletic unless it includes the closely related genera Vigtorniella and Pseu
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Jimi, Naoto, Shinta Fujimoto, Yoshihiro Fujiwara, Kohei Oguchi, and Toru Miura. "Four new species of Ctenodrilus, Raphidrilus, and Raricirrus (Cirratuliformia, Annelida) in Japanese waters, with notes on their phylogenetic position." PeerJ 10 (March 8, 2022): e13044. http://dx.doi.org/10.7717/peerj.13044.

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Four new species of annelids, Ctenodrilus japonicus sp. nov., Raphidrilus misakiensis sp. nov., Raphidrilus okinawaensis sp. nov., and Raricirrus anubis sp. nov., are described based on specimens collected from Japanese waters. Ctenodrilus japonicus sp. nov. inhabits the interstitial environment and can be distinguished from the other congeners by the following features: (i) total of 16 chaetigers, (ii) chaetigers 1–3 with stout hooks, (iii) minute body (approximately 1 mm in length), (iv) all parapodia with the same number of chaetae (two notochaetae; two neurochaetae), and (v) presence of do
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Book chapters on the topic "Simple ventral chaeta"

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Nelson-Smith, A., P. Knight-Jones,, and E. W. Knight-Jones. "Annelida." In The Marine Fauna of the British Isles and North-West Europe. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780198573562.003.0006.

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Abstract The annelids or ‘true’ worms form a major animal group, typically of elongated cylindrical shape and mostly ranging in length from 10mm to 150mm (although some are microscopic and a few exceed I m); the body is characteristically made up of a series of ring-like segments, indicated externally by annular constrictions. The relatively simple gut normally passes down the body from an anterior subterminal mouth to a posterior terminal anus. The first segment (prostomium) (Fig. 6.1) is situated above and in front of the mouth, the second (buccal segment or peristomium) surrounds it and the
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