Hostname: page-component-6bf8c574d5-mggfc Total loading time: 0 Render date: 2025-02-14T21:26:51.386Z Has data issue: false hasContentIssue false
  • English
  • Français

On the genus Holophryxus (Isopoda: Epicaridea), with description of the male and redescription of the female of Holophryxus acanthephyrae

Published online by Cambridge University Press:  11 May 2009

M. B. Jones  and
G. Smaldon
M. B. Jones
Affiliation:
Department of Biological Sciences, Plymouth Polytechnic, Drake Circus, Plymouth PL4 8AA
G. Smaldon
Affiliation:
Department of Natural History, Royal Scottish Museum, Chambers Street, Edinburgh EH1 1JF
Get access Rights & Permissions [Opens in a new window]

Introduction

Adults of the isopod genus Holophryxus (Dajidae) occur as ectoparasites on natant decapod crustaceans, but little is known of the ecology and life-history of most species. Species of Holophryxus are thought to have a typical dajid life cycle involving an intermediate host (copepod), a definitive host (prawn) and three larval stages (epicaridium, microniscus, cryptoniscus), and the one species for which details are available fits this pattern (Coyle & Mueller, 1981). The final host is infected by the cryptoniscus, a stage superficially resembling a cirolanid isopod, and the first cryptoniscus to settle loses its isopod-like appearance and develops through a juvenile stage into a rather inflated, highly modified female (Coyle & Mueller, 1981). Any subsequent settler becomes a male, retains the small cryptoniscus body form and lives within the marsupium of the female.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 66 , Issue 2 , May 1986 , pp. 303 - 314
Copyright
Copyright © Marine Biological Association of the United Kingdom 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Butler, T. H., 1964. Redescription of the parasitic isopod Holophryxus alaskensis Richardson, and a note on its synonymy. Journal of the Fisheries Research Board of Canada, 21, 971–976.CrossRefGoogle Scholar
Clarke, M. R., 1969. A new midwater trawl for sampling discrete depth horizons. Journal of the Marine Biological Association of the United Kingdom, 49, 945–960.CrossRefGoogle Scholar
Coyle, K. O. & Mueller, G. J., 1981. Larval and juvenile stages of the isopod Holophryxus alaskensis (Epicarida, Dajidae) parasitic on decapods. Canadian Journal of Fisheries and Aquatic Sciences, 38, 1438–1443.CrossRefGoogle Scholar
Holthuis, L. B., 1947. Nomenclatural notes on European macrurous Crustacea Decapoda. Zoölogische mededeelingen, 27, 312–322.Google Scholar
Jones, M. B., 1974. A stereoscan electron microscope study of the male form of Hemianhrus abdominalis (Kröyer) (Isopoda, Epicardea, Bopyridae). Journal of Natural History, 8, 193–197.CrossRefGoogle Scholar
Jones, M. B. & Fordy, M. R., 1971. A stereoscan electron microscope study of male reproductive characters in the Jaera albifrons group of species (Crustacea: Isopoda). Marine Biology, 10, 265–271.CrossRefGoogle Scholar
Koehler, R., 1911. Isopodes nouveaux de la famille des Dajidés provenant des campagnes de la ‘Princesse-Alice’. Bulletin de I'Institut oceanographique, no. 196, 34 pp.Google Scholar
Nielsen, S.-O. & Stromberg, J.-O., 1976. Morphological characters of taxonomical importance in Cryptoniscina (Isopoda Epicaridea). A scanning electron microscope study of cryptoniscus larvae. Sarsia, 52, 75–96.Google Scholar
Nierstrasz, H. F. & Brender, A Brandis G. A., 1931. Papers from Dr. Th. Mortensen's Pacific Expedition 1914–16. Epicaridea II. Videnskabelige Meddelelserfra Dansk naturhistorisk Forening i Kjøbenhavn, 91, 147–225.Google Scholar
Richardson, H., 1905 a. Isopods from the Alaska salmon investigation. Bulletin of the United States Bureau of Fisherie, 24, 209–221.Google Scholar
Richardson, H., 1905 b. A monograph on the isopods of North America. Bulletin. United States National Museum, no. 54, 727 pp.Google Scholar
Richardson, H., 1908. On some isopods of the family Dajidae from the northwest Pacific Ocean, with descriptions of a new genus and two new species. Proceedings of the United States National Museum, 33, 689–696.CrossRefGoogle Scholar
Rustad, D., 1935. Note on Holophryxus richardi Koehler(?) (Family Dajidae). Bergens museums drbok, 1934 (13), 31 pp.Google Scholar
Shiino, S. M., 1937. Holophryxus fusiformis, a new species of Dajidae, Epicaridea. Annotationes zoologicae japonenses, 16, 188–192.Google Scholar
Stephensen, K., 1912. Report on the Malacostraca collected by the ‘Tjalfe’ Expedition, under the direction of cand. mag. Ad. S. Jensen, especially at W. Greenland. Videnskabelige Meddelelser fra Dansk naturhistorisk Forening i Kjøbenhavn, 64, 57–134.Google Scholar
Stephensen, K., 1913. Corrections to the paper on the Malacostraca from the Tjalfe-Expedition. Videnskabelige Meddelelser fra Dansk naturhistorisk Forening i Kjebenhavn, 64, 329–330.Google Scholar
Stephensen, K., 1915. Isopoda, Tanaidacea, Cumacea, Amphipoda (excluding Hyperiidae). Report of the Danish Oceanographical Expeditions, 1908–1910, 2 (3), 53 pp.Google Scholar