Biodiversity Literature Repository
Published December 31, 2009 | Version v1
Taxonomic treatment Open

Asterocheres intermedius Hansen 1923

Creators

Description

Asterocheres intermedius (Hansen, 1923)

Ascomyzon intermedium Hansen 1923: 6.

Asterocheres intermedius: Stock 1966b: 152; Johnsson 1998: 91.

Material examined. Holotype Ψ (ZMUC. CRU-6873/8357) collected during the “Danish Ingolf Expedition” in Davis Strait, Station 25 (63º30΄N, 54º25΄W), at 582 fathoms (ca. 1.06 km).

Hosts. Unknown.

Distribution. Atlantic Ocean (Hansen 1923).

Remarks. Hansen (1923) omitted some taxonomically important appendages, such as the mandible and fifth legs (the latter lost in the type specimen), in his description of A. intermedius. Unfortunately, this species has not been recorded again, and only the antennule and antenna could be observed in the damaged, dissected holotype. Our observations of the pre-oral appendages differed from the original description as follows: 1) the antennule, despite being cleanly broken in half in the holotype, consists of 21 rather than 20 free segments; and 2) the endopod of the antenna is comprised of 3 instead of 2 segments. Despite these amendations, a detailed redescription of this species is still badly needed.

Contrary to the above species, A. intermedius can be easily differentiated from its congeners. For instance, A. intermedius, along with the following 19 congeners, possess a 21-segmented antennule in females: A. astroidicola Conradi, Bandera & López-González, 2006; A. bacescui (Marcus, 1965); A. echinicola (Norman, 1868); A. ellisi Hamond, 1968; A. flustrae Ivanenko & Smurov, 1997; A. hirsutus Bandera, Conradi & López- González, 2005; A. jeanyeatmanae Yeatman, 1970; A. lilljeborgi (Boeck, 1859); A. lunatus Johnsson, 1998; A. madeirensis Bandera, Conradi & López-González, 2007; A. minutus (Claus, 1889); A. reginae Boxshall & Huys, 1994; A. simulans (T. Scott, 1898); A. suberitis Giesbrecht, 1897; A. tenerus (Hansen, 1923) (redescribed below as possessing a 21-segmented antennule in female); A. tenuicornis Brady, 1910; A. uncinatus (Kritchagin, 1873); A. urabensis Kim, 2004; and A. violaceus (Claus, 1889). Among these species, only A. ellisi, A. urabensis, A. hirsutus, A. tenerus and A. astroidicola have a siphon extending beyond the insertion of leg 1 as in A. intermedius. However, these four species do not have a genital double-somite that is longer than wide as in A. intermedius.

Other

Published as part of Bandera, Eugenia & Conradi, Mercedes, 2009, Redescription of Asterocheres suberitis Giesbrecht, 1897 and A. tenerus (Hansen, 1923) (Copepoda: Siphonostomatoida), including notes on A. abyssi (Hansen, 1923) and A. intermedius (Hansen, 1923), pp. 41-52 in Zootaxa 1980 on page 43, DOI: 10.5281/zenodo.185273

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Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/03AEF308FFE9611BFF4D1BC86B9E80A7

Related works

Is part of
Journal article: 10.5281/zenodo.185273 (DOI)
Journal article: http://publication.plazi.org/id/FF978B70FFEB6119FFDA1B5F6A56847E (URL)
Is source of
https://sibils.text-analytics.ch/search/collections/plazi/03AEF308FFE9611BFF4D1BC86B9E80A7 (URL)

Biodiversity

Family
Asterocheridae
Genus
Asterocheres
Kingdom
Animalia
Order
Siphonostomatoida
Phylum
Arthropoda
Scientific name authorship
Hansen
Species
intermedius
Taxon rank
species
Taxonomic concept label
Asterocheres intermedius Hansen, 1923 sec. Bandera & Conradi, 2009

References

  • Hansen, H. J. (1923) Crustacea Copepoda II. Copepoda Parasita and Hemiparasita. The Danish Ingolf-Expedition, 3, 1 - 92.
  • Stock, J. H. (1966 b) Cyclopoida siphonostoma from Mauritius (Crustacea, Copepoda). Beaufortia, 13, 145 - 194.
  • Johnsson, R. (1998) Six species of the genus Asterocheres (Copepoda: Siphonostomatoida) associated with sponges in Brazil. Nauplius, 6, 61 - 99.
  • Conradi, M., Bandera, M. E. & Lopez-Gonzalez, P. J. (2006) The copepods associated with the coral Astroides calycularis (Scleractinia, Dendrophyllidae) in the Strait of Gibraltar. Journal of Natural History, 40, 739 - 757.
  • Marcus, A. (1965) New Copepoda of the Black Sea. Travaux Museum Histoire Naturelle " Grigore Antipa ", 5, 83 - 98.
  • Ivanenko, V. N. & Smurov, A. V. (1997) Asterocheres flustrae n. sp. (Copepoda: Siphonostomatoida: Asterocheridae) associated with Flustra foliacea L. (Bryozoa) from the White Sea. Systematic Parasitology, 38, 111 - 130.
  • Bandera, M. E., Conradi, M. & Lopez-Gonzalez, P. J. (2007) Two new asterocherid species (Siphonostomatoida: Asterocheridae) from Madeira and the Canary Islands (eastern Atlantic). Marine Biology Research, 3, 93 - 108.
  • Scott, T. (1898) Some additions to the Invertebrate Fauna of Loch Fyne. Annual Report of Fishery Board for Scotland, 16, 261 - 282.
  • Giesbrecht, W. (1897) System der Ascomyzontiden, einer semiparasitischen Copepoden-Familie. Zoologischer Anzeiger, 20, 253 - 255.
  • Kim, I. - H. (2004) New species of copepods (Crustacea) associated with marine invertebrates from the Pacific Coast of Panama. Korean Journal of the Biological Science, 8, 165 - 186.