A new species of<i>Bemlos</i>Shoemaker, 1925 (Amphipoda: Aoridae) from deep water off Tanabe Bay, Japan, with a review of the deep-sea aorids and their adaptations to the deep sea

Kodama, Masafumi; Kawamura, Tomohiko

doi:10.1093/jcbiol/ruy098

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…No species of Jassa has been confirmed to exist at such great depth and Jassa is known to contaminate seawater systems in ships and aquaria (see the Distribution section for transhemispheric species). As a tube-liver on shallow-water solid substrates, J. valida does not have the morphology for deep living, such as eye and coxal reduction, longer and slenderer pereopods and weaker sexual selection of the second gnathopod than in shallower species (Kodama & Kawamura 2019). A similar mis-interpretation of deep-sea collections by Kröncke (1994Kröncke ( , 1998 is reported by Sirenko (2004).…”

Section: Figure 36 Jassa Validasupporting

confidence: 59%

Untitled

2021

Zootaxa

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The amphipod genus Jassa Leach, 1814 now comprises 24 species that occur in temperate regions of both hemispheres on solid substrates from the lower intertidal zone to 500 m depth. The propensity for some species to form dense colonies in water intake structures and offshore platforms has brought them to attention as an unwanted pest. Based on the examination of ~25,000 specimens from ~1,100 museum and private collections, it is evident that some species of Jassa have been transported by human vectors since at least the 19 th century and now occur widely. Their colonial, tube-living habit enables such transport, and collection records document them on ships, buoys and portable water systems as well as on natural movable substrates such as logs, drift algae and larger crustaceans. Because Jassa can be so readily found, but species discrimination has had a problematic history, the purpose of this monograph is to assist researchers to identify species through illustrations, descriptions, keys and habitat summaries. Seven species which were named in the 19 th century but CONLAN ET AL.

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Section: Figure 36 Jassa Validasupporting

confidence: 59%

Untitled

2021

Zootaxa

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“…The family Aoridae is one of the families in the infraorder Corophiida (Lowry and Myers 2013), and is characterized by the enlarged male gnathopod 1 and the elongate pereopod 7 (Myers and Lowry 2003). In Japanese waters, a total of 27 species of the family have been recorded: 1 species of Aora Krøyer, 1845 (Hirayama 1984); 9 species of Aoroides Walker, 1898(Ariyama 2004a); 1 species of Bemlos Shoemaker, 1925 (Kodama and Kawamura 2019); 11 species of Grandidierella Coutière, 1904 (Ariyama 1996(Ariyama , 2020; Ariyama and Taru 2017); 3 species of Paragrandidierella Ariyama, 2002 (Ariyama 2002(Ariyama , 2013; 1 species of Pseudobemlos Ariyama, 2004 (Ariyama 2004b); and 1 species of Tethylembos Myers, 1988(Ariyama 2004b. Closer examination of the newly collected species has revealed they are undescribed species of Aoroides and Grandidierella.…”

Section: Introductionmentioning

confidence: 99%

Two New Species of Aoridae from Chichijima Island, the Ogasawara Islands in Japan (Crustacea: Amphipoda)

Ariyama

Kawabe

2022

Spec.Div.

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http://zoobank.org/EAA93134-A1D0-4959-BFF3-E1ADADD958D2 Two new species of the aorid Amphipoda are described from Chichijima Island, the Ogasawara Islands in Japan. Aoroides macrops sp. nov. from shallow water is characterized by the heavily setose male gnathopod 1, the coxa of which bears several plumose setae anteriorly, and the uropod 2 with a short inter-ramal process. This species is very similar to A. longimerus Ren and Zheng, 1996; however, this new species can be distinguished from A. longimerus by the larger eyes, the shorter carpus of the male gnathopod 1, and the shorter carpi of the pereopods 3 and 4. Grandidierella ogasawarensis sp. nov. from river mouth has the male gnathopod 1 with two teeth on the carpus and an anterodistal projection on the propodus, the male gnathopod 2 with an elongate carpus, and the uropod 1 bearing an inter-ramal process. This new species is different from its closely related congeners (G. koa Barnard, 1977; G. insulae Myers, 1981; and G. rubroantennata Ariyama and Taru, 2017) in the separated teeth on the carpus of the male gnathopod 1.

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