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Some observations of morphology and behavior of a hyperbenthic misophrioid copepod
Ohtsuka, S.; Tanaka, H.; Hirano, K.; Kondo, Y.; Jaume, D.; Boxshall, G.A. (2018). Some observations of morphology and behavior of a hyperbenthic misophrioid copepod. Bull. South. Calif. Acad. Sci. 117(2): 127-137. https://hdl.handle.net/10.3160/3615.1
In: Bulletin of the Southern California Academy of Sciences. The Academy: Los Angeles, Calif. ISSN 0038-3872; e-ISSN 2162-4534, more
Peer reviewed article  

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Authors  Top 
  • Ohtsuka, S.
  • Tanaka, H.
  • Hirano, K.
  • Kondo, Y.
  • Jaume, D., more
  • Boxshall, G.A., more

Abstract
    The locomotion, feeding, excretion, and oviposition of a member of the copepod family Misophriidae were observed based on a live specimen collected from a sandy bottom at a depth of 52 m off Nagannu Island, Okinawa, Japan. This species is related to Arcticomisophria Martínez Arbizu and Seifried, 1996 in the armature of leg 1, but the fifth leg is much more reduced. The combination of morphological characters strongly suggests that it represents an undescribed genus. The maxillipeds played a major role in attaching to the bottom and in crawling, while the antennae and mandibular palps were involved in slow swimming along the bottom. It fed on small-sized cultured phytoplankters, and excreted numerous fecal pellets. The female carried 4-5 eggs of 0.09 mm diameter that were loosely attached to the urosome. Nearly complete nuclear 18S and 28S rRNA gene sequences and a partial mitochondrial cytochrome c oxidase subunit 1 (CO1) gene sequence were obtained and are made available for future phylogenetic and systematic work.

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