Prevalence of Placobdella costata (Fr. Mûller, 1846) (Hirudinida: Glossiphoniidae) on the European pond turtle (Emys orbicularis) in the North-East of Algeria

Samira Fediras, Rachid Rouag, Nadia Ziane, Anthony Olivier, Arnaud Béchet, Slim Benyacoub


In Algeria, Emydidae is represented by only one species, the European pond turtle Emys orbicularis (Linnaeus, 1758). A population has been studied during the spring 2013 in the Parc National d’El Kala. The objective of this survey was identification and the quantification of leech species. Placobdella costata (Fr. Mûller, 1846) (Hirudinida: Glossiphoniidae) proved to be the only species of leech that parasitizes our population of Emys orbicularis. The prevalence was 26.41 %, it was very weak at the juvenile stages (10.28 %). The intensity was 0.51± 1.20 for the population; it was lower at the juvenile stages (0.14 ± 0.37). No relationship exists between the parasitic load and the morphological parameter. Indeed, plastron and posterior part (hind limbs) were the most parasitized with respectively 44.44 % and 29.63% of parasite load.

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