Shiganova, T., A. Stupnikova & K. Stefanova. (2015). Genetic analyses of non-native species Oithona davisae Ferrari FD & Orsi, 1984 in the Black Sea. BioInvasions Records. 4(2):91-95.

231564

10.3391/bir.2015.4.2.04 [view]

Shiganova, T., A. Stupnikova & K. Stefanova

2015

4(2):91-95.

Publication

Available for editors   [request]

A non-native species of the cyclopoid copepod in the genus Oithona was first recorded in the Black Sea in 2001 and was initially identified as Oithona brevicornis Giesbrecht, 1891. During the following years, this species became widely distributed first in the coastal then in the open areas of the Black Sea and later spread into the adjacent Sea of Azov through the Kerch Strait. Recent detailed re-examination of morphological features of this Oithona species indicated it is not O. brevicornis, but may be O. davisae Ferrari F.D. & Orsi, 1984 or perhaps one of the other species similar to O. brevicornis. This study examined the morphological features of this Oithona species collected from sites in the western and northeastern Black Sea, and genetic analyses were performed on specimens collected in the western Black Sea to clarify its identification. While we concluded the non-native species was not O. brevicornis or any of the native Oithona species, the lack of information on Oithona davisae in GenBank precludes definitive identification of taxonomic status. Additional genetic data are needed on O. davisae collected from its native and non-native range to allow definitive identification of specimens of this non-native species.

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