Amathia acervata Lamouroux 1824

Autor: Seo, Ji-Eun, Chae, Hyun Sook, Winston, Judith E., Zágoršek, Kamil, Gordon, Dennis P.
Rok vydání: 2018
Předmět:
DOI: 10.5281/zenodo.5961778
Popis: Amathia acervata Lamouroux, 1824 (Fig. 16) Amathia acervata Lamouroux, 1824: 45; Jelly 1889: 10; Hirose et al. 2017. Serialaria acervata: Blainville 1834: 476; Deshayes & Milne Edwards 1836: 170; d’Orbigny 1853: 595. Non Amathia acervata: d’Hondt 1979: 10, 16; 1983: 65, fig. 36E; d’Hondt 1991: 163, 165 (part); Gordon et al. 2009: 288. [These all refer to A. bicornis.] Non Amathia vidovici: d’Hondt 1991: 165 [These refer to A. acervata]. Material examined. MBRBK1710, Tongyeong yacht anchorage, South Sea, 34.4934°N, 128.2600°E, 17 August 2015, depth 30 cm. Description. Colonies forming erect, bushy and branching tufts attached to algae and other substrata (Fig. 16A–D). Anticlockwise (usually) spirals of zooid clusters grouped along narrow (about 1.4 mm width) cylindrical stolons. Zooids tilted relative to stolon axis, narrow (about 0.5 mm long, 0.12 mm wide), tubular and connate and more thickly cuticularized at distal ends, a cluster consisting of 12–15 pairs (Fig. 16A, B). Clusters spiral about 1.5 turns around stolon (clusters c. 0.6–1.4 mm long). Stolon branching mostly trifurcate. Color of alcohol-preserved specimens whitish tan. Polypides with 8 tentacles. Remarks. Bushy Amathia species found in Asian waters have usually been attributed to Amathia convoluta (Lamarck, 1816) or Amathia distans Busk, 1886, species with Atlantic distributions. Hirose et al. (in prep.) have made a morphological and molecular study of three Amathia species in Japan, including the redescription of the holotype of Amathia acervata. This is the first record of the species in Korea. Another Japanese species, presently undescribed (Hirose et al. in prep.) is more robust, with slightly larger stolons and zooids with darker-brown pigmentation and mostly bifurcate branching. It may also be found to occur in Korea. No living specimens were found during our survey, but MBRBK houses jars of preserved material. Distribution. Korea: Japan Sea (East Sea) coastal localities. Also Pacific coast of Japan.
Published as part of Seo, Ji-Eun, Chae, Hyun Sook, Winston, Judith E., Zágoršek, Kamil & Gordon, Dennis P., 2018, Korean ctenostome bryozoans-observations on living colonies, new records, five new species, and an updated checklist, pp. 251-283 in Zootaxa 4486 (3) on pages 274-275, DOI: 10.11646/zootaxa.4486.3.3, http://zenodo.org/record/1453233
{"references":["Lamouroux, J. V. F. (1824) Amathie. Encyclopedie d'Histoire Naturelle des Zoophytes ou Animaux rayonnes, 95, 42 - 45.","Jelly, E. C. (1889) A Synonymic Catalogue of Recent Marine Bryozoa. London, Dulau & Co., xv + 322 pp.","Hirose, M. (2017) Diversity of freshwater and marine bryozoans in Japan. In: Motokawa M. & Kajihara H. (Eds) Species Diversity of Animals in Japan. Diversity and Commonality in Animals. Springer, Tokyo, pp. 629 - 649.","Blainville, H. M. D. de (1834) Manuel d'Actinologie ou de Zoophytology. Paris, F. G. Levrault, 644 pp.","Deshayes, G. P. & Milne Edwards, H. (1836) Deuxieme Edition. Revue et augmentee de notes presentant les faits nouveaux dont la science s'est enrichie jusqu'a ce jour. In: Lamarck, J. B. P. A. de (Ed.), Histoire naturelle des Animaux sans Vertebres … precede d'une introduction offrant la determination des caracteres essentiels de l'animal, sa distinction du vegetal et des autres corps naturels, enfin, l'exposition des principes fondamentaux de la zoologie. Tome Deuxieme. Histoire des Polypes. Paris, J. B. Baillere, 684 pp.","Gordon, D. P., Taylor, P. D. & Bigey, F. P. (2009) Phylum Bryozoa. In: Gordon, D. P. (Ed.), New Zealand Inventory of Biodiversity. Volume One. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Christchurch, Canterbury University Press, pp. 271 - 297.","Busk, G. (1886) Report on the Polyzoa collected by H. M. S. Challenger during the years 1873 - 76. Part II. - The Cyclostomata, Ctenostomata, and Pedicellinea. Report on the Scientific Results of the Voyage of H. M. S. Challenger, Zoology, 17 [50], iviii, 1 - 47, 10 pls."]}
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