Lessepsian fish migration: genetic bottlenecks and parasitological evidence |
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Authors: | Paolo Merella Marco Casu Giovanni Garippa Antonio Pais |
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Institution: | 1. Sezione di Parassitologia e Malattie Parassitarie, Dipartimento di Biologia Animale, Università di Sassari, via Vienna, 2, 07100 Sassari, Italy;2. E‐mail: malpar@uniss.it;3. Dipartimento di Zoologia e Genetica Evoluzionistica, Università di Sassari, Via Muroni, 25, 07100 Sassari, Italy;4. Sezione di Acquacoltura e Gestione delle Risorse Acquatiche, Dipartimento di Scienze Zootecniche, Università di Sassari, Via De Nicola, 9, 07100 Sassari, Italy |
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Abstract: | As a rule, non‐indigenous species (NIS) populations derived from biological invasion events represent a subset of the genetic diversity of the source population. In biological invasions, host–parasite interactions play an important role, and parasitological data for NIS populations can provide useful information such as their area of origin, mechanism of invasion and prospects of success in the new habitat. When both genetic and parasitological data are available, and they suggest the same scenario, the history of an invasion can be inferred with no discrepancy, but when data cannot be reconciled an alternative model should be considered. In this study a comparison of genetic and parasitological data for the Lessepsian migrant the bluespotted cornetfish, Fistularia commersonii, in the Mediterranean Sea presents the opportunity to evaluate the compatibility of information of this nature, and to propose possible invasion scenarios consistent with evidence provided by both criteria. |
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Keywords: | Biological invasions fish migration Fistularia commersonii genetics Lessepsian migrations Mediterranean Sea parasitology |
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