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Morphological and molecular differences between the invasive bivalve Ruditapes philippinarum (Adams & Reeve, 1850) and the native species Ruditapes decussatus (Linnaeus, 1758) from the northeastern Adriatic Sea

Nerlović, Vedrana; Korlević, Marino; Mravinac, Brankica (2016) Morphological and molecular differences between the invasive bivalve Ruditapes philippinarum (Adams & Reeve, 1850) and the native species Ruditapes decussatus (Linnaeus, 1758) from the northeastern Adriatic Sea. Journal of Shellfish Research, 35 (1). pp. 1-9. ISSN 0730-8000

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Abstract

The alien bivalve Ruditapes philippinarum (Manila clam) was intentionally introduced along the Italian Coast of the northwestern Adriatic Sea for aquaculture purposes in 1983. In February 2013, R. philippinarum was recorded at a site of the northeastern Adriatic Sea (Zelena Laguna, vicinity of city Poreč, west Istrian Coast, Croatia). This finding represents the first record of R. philippinarum in Croatian waters. The colonized site is located at a distance of approximately 100 km by a straight line in the west east direction from the site where the mollusc was firstly introduced. At Zelena Laguna, R. philippinarum colonized the intertidal sandy substrate together with the native species Ruditapes decussatus. The two sympatric species were initially differentiated based on the morphology of the siphons. Molecular analysis of 16S rRNA gene confirmed the morphological distinction between the two species. Although the two species are very similar in shell morphology, the relationships width/length and width/height were negative allometric for R. decussatus and isometric for R. philippinarum. The relationship height/length was isometric for both species. Additionally, the length of the pallial sinus was significantly different between the two species (P < 0.001).

Item Type: Article
Uncontrolled Keywords:
Subjects: NATURAL SCIENCES > Biology
NATURAL SCIENCES > Biology > Zoology
NATURAL SCIENCES > Biology > Genetics, Evolution and Phylogenetics
Divisions: Center for Marine Research
Division of Molecular Biology
Projects:
Project titleProject leaderProject codeProject type
Evolution, properties and functional interactions of satellite DNA sequences (Evolucija, osobitosti i funkcionalne interakcije sekvenci satelitnih DNA)-Miroslav Plohl098-0982913-2756MZOS
UNSPECIFIEDUNSPECIFIEDUNSPECIFIEDAdris
Depositing User: Vedrana Nerlović
Date Deposited: 09 Dec 2016 12:45
Last Modified: 09 Dec 2016 12:45
URI: http://fulir.irb.hr/id/eprint/2721
DOI: 10.2983/035.035.0100

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