Host-parasite association of Placobdella costata (Glossiphoniidae: Hirudinea) and Mauremys leprosa (Geoemydidae: Testudinoidea) in aquatic ecosystems of Morocco.

Parasitology Research
El-Mustapha LaghzaouiEl Mouden El Hassan

Abstract

Emys orbicularis (Linnaeus, 1758) was considered as a specific host of Placobdella costata (Fr. Mûller, 1846). However, since the parasite was recorded from outside the distribution area of its host, some authors suggested a possible relationship with other hosts. Although two accidental associations were found with another turtle, Mauremys leprosa (Schweigger, 1812), the obtained data remain insufficient to better understand this discovered host-parasite ecological system. In this context, the present study was carried out to evaluate the relationship between the Mediterranean pond turtle, M. leprosa, and the freshwater rhynchobdellid leech, P. costata (Hirudinida: Glossiphoniidae), in aquatic ecosystems of Morocco. During the period from April to June 2018, we found leeches attached to turtles in five out of 30 populations sampled with a prevalence of infection significantly higher in adult than that in juvenile turtles. Moreover, the males are the most infested with 51% of the total, followed by females (33.3%) and juveniles (15.7%). The obtained results indicated that 51 turtles were infested by 139 leeches with a mean intensity of infestation of 4.17 ± 0.47 leeches/turtle (up to 10 leeches/turtle). It was higher in males t...Continue Reading

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