Naslov
Phylogeny and evolutionary history of the cave-dwelling atyid shrimp Troglocaris based on sequences of three mtDNA genes.

Autori
Franjević, Damjan ; Kalafatić, Mirjana ; Kerovec, Mladen ; Gottstein, Sanja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
EMBO - Molecular Biodiversity and DNA Barcode / Saccone, Cecilia ; Olmedo Enrique C ; Pesole Graziano ; Andersson Siv ; Bork Peer ; Schindel David - Rim : European Molecular Biology Organization (EMBO), 2007, 49-49

Skup
EMBO - Molecular Biodiversity and DNA Barcode

Mjesto i datum
Rim, Italija, 17.05.2007. - 19.05.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Molecular biodiversity; Barcoding of Life

Sažetak
The genus Troglocaris is the most widespread cave-dwelling decapod in Europe with the disjunct range extended to the West Caucasus. In addition, its distribution encompasses a number of major drainage basins and biogeographical regions identified for Proteus in Dinaric Karst (Sket 1997). Originally, four species were described (Holthuis 1986, 1993): Troglocaris anophthalmus (Kollar, 1848), T. hercegovinensis (Babić, 1922), T. inermis Fage, 1937, and T. kutaissiana (Sadovsky, 1930), of which the nominal species T. anophthalmus was later treated as three distinct subspecies and the last one as five distinct species. T. hercegovinensis was originally described as Troglocaridella hercegovinensis by Babić (1922) who was originally created that separate genus. Our sampling includes one or more individuals of each of the nominate taxa. We examined the phylogenetic relationships between the most presently recognised species of the genus Troglocaris using mitochondrial 16S rRNA, cytochrome oxidase I and cytochrome oxidase II genes. The study focuses on the three disjunct areas of the cave-dwelling shrimp Troglocaris: the Southern France, the Dinaric Karst and the Western Caucasus. We combined mitochondrial data in various shrimp populations to clarify the deepest evolutionary roots of the genus Troglocaris. Our results based on phylogenetic analysis of three mitochondrial genes conducted on 14 specimens of the closely related atyid taxa do not support the monophyly of the genus Troglocaris. Moreover, new insights were introduced to Atyidae subfamilies status. At subfamily level a difference was apply to the Typhlatyinae, excluding the genus Spelaeocaris, which was nested inside Paratyinae. The closest relative to the Franch species T. inermis appear to be the surface-dwelling shrimp Atyaephyra desmaresti. The separation of the oldest Western Troglocaris lineage from the Dinaro-Caucasian lineages is estimated to have occurred in the Late Middle Miocen. DNA sequence data suggest that T. hercegovinensis from South Herzegovina and T. kutaissiana complex from Western Caucasus are sister species. A phylogeny of the genus Troglocaris and genera from presumptive in-groups Spelaeocaris and Atyaephyra, respectively, is estimated. The data, when evaluated with different search algorithms, yielded phylogenetic trees, none of which supported the monophyly of the genus Troglocaris. Therefore, the genus Troglocaris cannot be considered monophyletic due to an affinity between Troglocaris and Spelaeocaris. The interrelationship and intrarelationships of the atyid subfamilies are also different from the hypotheses suggested by Holthuis (1986, 1993).

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA