Journal
PARASITE
Volume 25, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/parasite/2018003
Keywords
Copepoda; deep-sea; Pennellidae; taxonomy
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Funding
- KAKENHI from the Japan Society of the Promotion of Science [16K07825, 24248032, 26304030, 23405031]
- JST grant CREST
- fund for Interdisciplinary Collaborative Research by the Atmosphere and Ocean Research Institute, University of Tokyo
- Cross-ministerial Strategic Innovation Promotion Program (SIP)
- Core Research for Evolutional Science and Technology
- Grants-in-Aid for Scientific Research [16K07825] Funding Source: KAKEN
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A new genus and species of pennellid copepod, Protosarcotretes nishikawai n. g., n. sp., is described on the basis of an ovigerous female infecting a Pacific viperfish Chauliodus macouni collected from the deep-waters of Suruga Bay, Japan. The new genus exhibits the most plesiomorphic states in the first to fourth legs of pennellids, and is differentiated from two closely related pennellid genera Sarcotretes and Lernaeenicus by the morphology of the oral appendages. Two species of the genus Lernaeenicus are transferred to the new genus as Protosarcotretes multilobatus (Lewis, 1959) n. comb. and Protosarcotretes gnavus (Leigh-Sharpe, 1934) n. comb. The host specificity and life cycle of deep-sea pennellids are discussed. Sarcotretes scopeli Jungersen, 1911 and Cardiodectes bellottii (Richiardi, 1882) show low differentiated host-specificity, while P. nishikawai seems to be limited to the Stomiidae, which are rare hosts of pennellids, in contrast to the Myctophidae family. In the Pennellidae family, two patterns of the life cycle are found: with or without naupliar stages.
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