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New tantulocarid Polynyapodella ambrosei gen. et sp., (Basipodellidae) from the Northeast Water Polynya (Greenland) with emphasis on the phylogeny of its host genus Cervinia (Copepoda: Harpacticoida)
Huys, R.; Møbjerg, N.; Kristensen, R.M. (1997). New tantulocarid Polynyapodella ambrosei gen. et sp., (Basipodellidae) from the Northeast Water Polynya (Greenland) with emphasis on the phylogeny of its host genus Cervinia (Copepoda: Harpacticoida). Cah. Biol. Mar. 38(3): 181-199
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, meer
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| Auteurs | | Top |
- Huys, R., meer
- Møbjerg, N.
- Kristensen, R.M., meer
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| Abstract |
Several life cycle stages of a new genus and species of Tantulocarida are described from the Arctic Northeast Water Polynya (NEW) on the East Greenland shelf. Polynyapodella ambrosei gen. et sp. nov. was found to infest a new species of the deepwater harpacticoid genus Cervinia (Cerviniidae). The tantulocarid is placed in the family Basipodellidae on account of the male trunk sac formation and appears to be most closely related to Nipponotantulus heteroxenus recorded from southern Japan. The harpacticoid host Cervinia sp. shows a close affinity with Cervinia langi and C. philippinensis sp. nov. (proposed for C. langi sensu Ito (1983)). Analysis of the phy]ogenetic relationships within the genus Cervinia revealed that it represents a paraphyletic taxon as it is currently diagnosed. The genus Pseudocervinia, previously regarded as a junior subjective synonym of Cervinia, is reinstated to accommodate the type-species P. magna. Cervinia tenuiseta shares a sistergroup relationship with the genus Expansicervinia and is assigned to a separate genus Brotskayaia gen. nov. The genus Cervinia is redefined to include the species of the synarthra-group, the type-species C. bradyi and C. pilosa. Neocervinia gen. nov. is proposed to accommodate C.tenuicauda and C. unisetosa. The taxonomic position of C. tenuiseta sensu Por (1969), C. synarthra sensu Por (1967) and C. brevipes is briefly discussed as well as the taxonomic implications caused by the extreme sexual dimorphism displayed by some species of Cervinia. |
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