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Arch Cape, OR, United States

An J.,Shanxi Normal University | Markham J.C.,Arch Cape Marine Laboratory | Yu H.,CAS Qingdao Institute of Oceanology
Journal of Natural History

This is the first record from China of the bopyrid isopod genus Asymmetrione, of which the new species Asymmetrione globifera, a parasite of the hermit crab Dardanus hessii (Miers) in Beibu Gulf and South China Sea, is described. The female A. globifera differs from Asymmetrione nossibensis Bourdon in the shape of its barbula and ornamentation of the first oostegite. A tabulation of the occurrence of all currently known species of Asymmetrione is included. New genus Parasymmetrione is described. The type species, Parasymmetrione tuberculineata, sp nov., a parasite of Clibanarius corallinus (H. Milne-Edwards) Xisha, is similar in appearance to Asymmetrione spp. but differs, in the female, in not having the propodi of its pereopods produced into sockets and having uniramous uropoda; the male of P. tuberculineata sp. nov. differs from species of Asymmetrione in having the dactyli of only its first pair of pereopods markedly longer than those of the following pereopods. © 2010 Taylor & Francis. Source

An J.,Shanxi Normal University | Li X.,CAS Qingdao Institute of Oceanology | Markham J.C.,Arch Cape Marine Laboratory
Raffles Bulletin of Zoology

Three bopyrid species belonging to two genera infesting hermit crabs from the South China Sea are reported. This is the first record of the genus Pagurion Shiino, 1933, in Chinese waters, where it is represented by two species: Pagurion tuberculata Shiino, 1933, infesting Da rdanus aspersus (Berthold, 1846), and Pagurion arrosor n. sp., infesting Dardanus arrosor (Herbst, 1796). The female of Pagurion arrosor differs from that of P. tuberculata in the structure of its barbula, pleopods, and terminal pleomere. The first Chinese record of the genus Pseudionella Shiino, 1949, is P. spiropaguri n. sp. found infesting Spiropagurus profundorum Alcock, 1905, S. spiriger (De Haan, 1849), and Spiropagurus sp. Pseudionella spiropaguri is contrasted with the other four previously described species of the genus. © National University of Singapore. Source

An J.,Shanxi Normal University | Markham J.C.,Arch Cape Marine Laboratory | Li X.,CAS Qingdao Institute of Oceanology
Journal of Natural History

Five species of the bopyrid genus Parapenaeon are reported from China, of which three are new to science, and one, Parapenaeon expansa Bourdon, 1979, is a new record. New species are Parapenaeon calculosa, sp. nov., Parapenaeon diatropa, sp. nov. and Parapenaeon sicyoniae, sp. nov., from the East and South China Seas. The female of each new species has six pleomeres, no lateral plates on the sixth pleomere, and biramous uropods, characters that place them in the genus Parapenaeon Richardson, 1904. Each can be distinguished from previously described species of the genus Parapenaeon in body shape, by the characters of oostegite 1, the barbula, brood pouch, pleopods and uropods of the females. A table including all of the currently recognized species of Parapenaeon with type localities, known geographical distribution and reported hosts, is given. A key to the recorded species of Parapenaeon Richardson, 1904 is provided, as is a new diagnosis of the genus. http://zoobank.org/urn:lsid:zoobank.org:pub:35CD12BB-D1F3-48DF-BABB-2EAA3030395B © 2015 Taylor & Francis. Source

An J.,Shanxi Normal University | Zhao Q.,Shanxi Normal University | Markham J.C.,Arch Cape Marine Laboratory

Paguristione uniuropodus gen. n., sp. n. infests Paguristes sp. in the East China Sea. Paguristione gen. n. differs from the closely related genera Pseudione and Pagurion by its females having indistinct lateral plates on the last two pleomeres and its male with a long tapering pleon of six pleomeres, lacking both pleopoda and uropoda. © Jianmei An et al. Source

Chapman J.W.,Oregon State University | Dumbauld B.R.,U.S. Department of Agriculture | Itani G.,Kochi University | Markham J.C.,Arch Cape Marine Laboratory
Biological Invasions

The introduced Asian parasitic bopyrid isopod, Orthione griffenis, was first discovered on the Pacific coast of North America in Washington in 1988 and next in California in 1992. The range of Orthione presently extends from British Columbia to Baja California, where it infests at least two species of the native estuary mud shrimp, Upogebia. Intense Orthione infestations are associated with the apparent demise of many local populations of Upogebia pugettensis yet nonindigenous origins of Orthione in North America and thus the ecological significance of its impacts have remained in doubt. Six criteria reveal that Orthione is introduced to North America: its conspecificity with disjunct Asian populations, its earliest (1950s) collections in Asia, its late discovery among symbiotic species associated with Upogebia, its historical absence, and its appearance in North America coincident with extensive new ballast water traffic from Asia. Orthione is the first recognized bopyrid isopod invasion globally. Coexistence of U. pugettensis, which are ecosystem engineers, with its newly acquired parasite cannot be assumed. Orthione threatens eastern Pacific estuary ecosystems where Upogebia were previously abundant. © 2011 Springer Science+Business Media B.V.(outside the USA). Source

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