Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

A new species of Peniculus (Copepoda: Siphonostomatoida) parasitizing mesopelagic myctophid fish: first discovery of colonization of the genus in deep water
Ohtsuka, S.; Nishikawa, J.; Boxshall, G.A. (2018). A new species of Peniculus (Copepoda: Siphonostomatoida) parasitizing mesopelagic myctophid fish: first discovery of colonization of the genus in deep water. Parasite 25: 58. https://dx.doi.org/10.1051/parasite/2018057
In: Parasite. PDG Communication/Princeps Editions: Paris. ISSN 1252-607X; e-ISSN 1776-1042, more
Peer reviewed article  

Available in  Authors 

Keywords
    Colonization
    Myctophidae Gill, 1893 [WoRMS]; Peniculus Nordmann, 1832 [WoRMS]; Pennellidae Burmeister, 1835 [WoRMS]
Author keywords
    diel vertical migration; mesopelagic

Authors  Top 
  • Ohtsuka, S.
  • Nishikawa, J.
  • Boxshall, G.A., more

Abstract
    Peniculus hokutoae n. sp. is described on the basis of an ovigerous adult female parasitizing the caudal fin of the myctophid fish Symbolophorus evermanni (Gilbert, 1905), collected from Suruga Bay, Japan. This is the first record of parasitism by this genus on mesopelagic myctophid fish. The new species is easily distinguished from other congeners in: (1) the presence of a conical process anterior to the rostrum; (2) the secondary elongation of the first pedigerous somite; (3) the incorporation of the third and fourth pedigerous somites into the trunk; (4) the unilobate maxillule bearing two unequal apical setae; (5) the lack of any processes on the first segment of the maxilla. Four morphological patterns of the cephalothorax, neck and anterior parts of the trunk can be found in the genus. We infer that initial colonization of a mesopelagic myctophid fish as host is likely to have occurred when the diurnally-migrating myctophid host was feeding in near-surface waters at night and was exposed to infective stages of Peniculus.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors