On the occurrence of sea lamprey Petromyzon marinus (Agnatha: Petromyzonidae) in Tunisian waters (central Mediterranean Sea)

摘要

A specimen of sea lamprey Petromyzon marinus Linnaeus, 1758 was found for the third time off Ras Jebel, in the Gulf of Tunis, northern Tunisia. The specimen is described with morphometric measurements, while the species occurrence in the area and the Mediterranean Sea is discussed and commented. Additionally, sea lamprey remains an occasional visitor in the Tunisian waters and, consequently, the occurrence of a breeding population seems unlikely.