Background: To date, only scarce information is available about the diaptomid copepods of the Middle Eastdespite the ecological and biogeographical importance of the family Diaptomidae in the inland waters of theHolarctic region. Moreover, the taxonomic status of some of the taxa occurring in the area is in need of revision.We studied crustaceans collected from temporary and permanent lentic water bodies in Israel with the aim ofproviding an updated census of the diaptomid copepods occurring in the country. Furthermore, we morphologicallyand genetically analysed samples of Arctodiaptomus similis s.l. to shed light on its taxonomy.Results: Five diaptomid taxa were collected during this survey. Among these, Phyllodiaptomus blanci is new for thecountry and the whole circum-Mediterranean area and might be an allochthonous species of eastern origin. Withinthe collected samples, we singled out two parapatric groups of populations within A. similis s.l.; these consistentlydiffer both based on morphology (chaetotaxy of the left male antennule) and molecular data (divergence over 17% atthe mitochondrial gene for the cytochrome b). We thus attribute the full species rank to Arctodiaptomus irregularisDimentman & Por, 1985 stat. rev., originally described as a subspecies of the widespread species Arctodiaptomussimilis (Baird, 1859).Conclusions: We critically evaluated all species hitherto reported for Israeli inland waters. Considering both theconfirmed literature data and the new findings, Israeli diaptomid fauna is composed of at least seven species.However, the need for further surveys in the Middle East and for detailed systematic revisions of somecontroversial taxa is stressed. Our results on the systematics of A. similis s.l. illustrate the importance ofimplementing molecular analyses when investigating diversity patterns of groups which are difficult to resolvebased on morphology alone.
|Numero di pagine||11|
|Stato di pubblicazione||Published - 2014|
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