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Gattyana cirrhosa

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Gattyana cirrhosa is a scale worm known from widespread locations in the North Atlantic, Arctic, and northwestern Pacific oceans, from the intertidal zone to depths of at least 1,200 m (3,900 ft).[2][3]

Description

Gattyana cirrhosa is a short-bodied worm with 38 segments and 15 pairs of elytra, which bear a marginal fringe of papillae and are a rich brassy-orange colour. The lateral antennae are positioned ventrally on the prostomium, directly beneath the median antenna. Notochaetae are about as thick as or thinner than the neurochaetae.[2][4]

Biology and ecology

Gattyana cirrhosa has a commensal relationship with chaetopterid, terebellid, and pectinariid polychaete worms, living within the tubes they construct. However, it is also a free-living taxon.

References

  1. ^ Read, G.; Fauchald, K. (Ed.) (2020). World Polychaeta database. Gattyana cirrhosa (Pallas, 1766). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=130749
  2. ^ a b Pettibone, Marian H. (1963). Marine polychaete worms of the New England region. I. Aphroditidae through Trochochaetidae. Bulletin of the United States National Museum. 227(1): 1-356., available online at https://www.biodiversitylibrary.org/page/7870746
  3. ^ Jirkov, I.A. (2001). [Polychaeta of the Arctic Ocean] (In Russian) Polikhety severnogo Ledovitogo Okeana. Yanus-K Press, Moscow, 632 pp., available online at https://www.researchgate.net/publication/259865957_Jirkov_2001_Polychaeta_of_the_North_Polar_Basin
  4. ^ Fauchald, K.; Wilson, R.S. (2003). "Polynoidae (Polychaeta)-A DELTA database of genera, and Australian species". In R.S. Wilson; P.A. Hutchings; C. J. Glasby (eds.). Polychaetes: An Interactive Identification Guide. Melbourne: CSIRO Publishing.
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Gattyana cirrhosa: Brief Summary

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Gattyana cirrhosa is a scale worm known from widespread locations in the North Atlantic, Arctic, and northwestern Pacific oceans, from the intertidal zone to depths of at least 1,200 m (3,900 ft).

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Biology

provided by World Register of Marine Species
Breeding probably takes place in spring (March-June) and the larvae develop in the water column. The species spawns several times during its life. It can reach an age of at least 4-5 years. In the subtidal parts of the area, G. cirrhosa is almost exclusively found in the tubes of the polychaete Chaetopterus variopedatus. Other studies have recorded the species from (empty) tubes of other polychaetes such as Lagis koreni and Amphitrite johnstoni, and in Arenicola burrows. G. cirrosa, like all polynoids, is considered a predatory carnivore. Small crustaceans, echinoderms, polychaetes, gastropods, sponges and hydroids have been mentioned as prey items. (Hartmann-Schröder, 1971; Wolff, 1973; Curtis, 1977; Fauchald & Jumars, 1979; Hayward & Ryland, 1990).

Reference

Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp.

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Distribution

provided by World Register of Marine Species
This species is very abundant at the Oyster Ground, where it forms a substantial part of the infaunal biomass. G. cirrhosa also occurs in the Delta area (Grevelingenmeer, Ooster- and Westerschelde). The species is (almost) absent from the Southern Bight and the Wadden Sea.

Reference

Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp.

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Habitat

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G. cirrhosa shows a preference for the muddier types of sediment as found in the Oyster Ground.

Reference

Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp.

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Morphology

provided by World Register of Marine Species
This species has a flattened body that is oval in outline. lt is composed of up to 38 segrnents and reaches 40 mm in length. The dorsal surface is covered with fifteen pairs of soft scales (elytra). These elytra are covered with minute spines and have a fringe of papillae along the outer edge. The head bears four eyes, one median and two lateral antennae. The elytra have a distinct dark spot in the centre (Hartmann-Schröder, 1971; Hayward & Ryland, 1990).

Reference

Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp.

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