Asociaciones en la zona bentopelágica: el anfípodo <i>Caprella subtilis</i> (Amphipoda: Caprellidae) y la holoturia <i>Ellipinion kumai</i> (Elasipodida: Elpidiidae)

Abstract

suMMary: an association between the caprellid amphipod Caprella subtilis Mayer, 1903 and the elpidiid holothurian Ellipinion kumai (Mitsukuri, 1912) was confirmed through in situ submersible capture at 309 m depth in sagami Bay, central Japan, and through shipboard observations. information on this association, including behavioural and morphological data on both species, is presented. information on the taxonomic standing of C. subtilis and related species is also introduced. Furthermore, we record swimming behaviour in the holothurian genus Ellipinion for the first time. We also introduce other biotic associations revealed during studies using submersible vehicles operated by the Japan agency for Marine-earth science and Technology (JaMsTec), including associations between benthopelagic holothurians and mysids, as well as hydrozoan polyps.Keywords: Caprella, Ellipinion, holothurian, association, benthopelagic, submersible, Japan, sagami Bay. resuMen: Asociaciones en la zona bentopelágica: el anfípodo Caprella subtilis (Amphipoda: Caprellidae) y la holoturia ellipinion kumai (Elasipodida: Elpidiidae). -este trabajo confirma la asociación entre el anfípodo caprélido Caprella subtilis Mayer, 1903 y la holoturia elasipodida Ellipinion kumai (Mitsukuri, 1912), a partir de la captura in situ, a 309 m de profundidad, con un submarino, y a través de observaciones a bordo, en la Bahía sagami, zona central de Japón. se presenta información de esta asociación, incluyendo datos de comportamiento y morfológicos para ambas especies. También se incluye información del estado taxonómico de C. subtilis y especies relacionadas. además, registramos por primera vez el comportamiento natatorio del género de holoturia Ellipinion. asimismo, presentamos información de otras asociaciones bióticas reveladas durante estudios en los que se han utilizados vehículos sumergibles dirigidos por la Japan agency for Marine-earth science and Technology (JaMsTec), incluyendo asociaciones entre holoturias bentopelágicas y misidáceos, así como pólipos de hidrozoos.

A new genus and species of Phtisicidae (Crustacea: Amphipoda) from abyssal depths in the Japan Trench, with special reference to similarities with Southern Ocean genera

“…Lithodes ferox Filhol, 1885, which inhabits depths of 300-1000 m off the west coast of Africa, was reported to migrate seasonally to different bathymetric depths off southern Namibia (Abelló and Macpherson, 1991). Caprella subtilis Mayer, 1903 was recorded from 309 m attached to a swimming benthopelagic holothurian, Ellipinion kumai (Mitsukuri, 1912), in Sagami Bay, Japan (Lindsay and Takeuchi, 2008). Rogacheva et al (2012) reported the swimming behavior of deep-sea holothurians at abyssal depths of 2200-2800 m in the northern Mid-Atlantic Ridge.…”

A Census of Zooplankton of the Global Ocean

“…High local diversity has been attributed to the coexistence of many species, through vertical or other modes of niche partitioning, but the exact mechanism for their co -existence is still poorly understood (Lindsay & Hunt 2005 ;Kuriyama & Nishida 2006 ). Recently, the contribution of biological associations toward the enhancement of species diversity has been attracting much attention Lindsay & Takeuchi 2008 ;Ohtsuka et al 2009 ).…”

“…Discoveries of novel Cnidaria and Ctenophora species have resulted (Kitamura et al 2005 ;Fuentes & Pag è s 2006 ;Pag è s et al 2006 ;Hosia & Pag è s 2007 ), some requiring the establishment of new higher taxonomic groups (Lindsay & Miyake 2007 ). This work has also allowed comparisons among regional faunas in light of geological history and environmental conditions, and revealed novel relationships among gelatinous plankton and other organisms (Ates et al 2007 ;Pag è s et al 2007 ;Lindsay & Takeuchi 2008 ;Ohtsuka et al 2009 ).…”

A new species of <i>Caprella</i> (Crustacea: Amphipoda: Caprellidae) from the landward slope of the Japan Trench

“…Most Caprella spp. from this region inhabit shallow waters (Takeuchi et al 2001), but four species from a depth of over 300 m have been reported in this area (Arimoto 1934(Arimoto , 1976Takeuchi et al 1989;Guerra-García & García-Gómez 2003;Lindsay & Takeuchi 2008). Arimoto (1934) reported six species from the genus Caprella collected from the continental shelf off the Tohoku District, northeastern Japan, in 1926-1929, but did not provide collection information, including the depth of the collection sites.…”

“…Caprella sabineae Guerra-García & García-Gómez, 2003 was described based on specimens collected from a depth of 600 m depth in the Sagami Bay, Japan, during the Dr. Sixten Bock Japan Expedition in 1914. Lindsay & Takeuchi (2008) reported the association of C. subtilis Mayer, 1903 with a swimming benthopelagic holothurian of the genus Ellipinion Hérouard, 1923 at a depth of 309 m in the Sagami Bay, Japan. Eleven species from the genus Caprella were recorded from the continental slope of the Chishima/Kuril-Kamchatka Trench, located north of the Japan Trench, in the northwestern Pacific Ocean, at depths of 300-2200 m (Vassilenko 1993).…”