✦ LIBER ✦

A model for studying isolation mechanisms in parasite populations: The genusLepeophtheirus (Copepoda, Caligidae)

✍ Scribed by De Meeus, T. ;Renaud, F. ;Gabrion, C.

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 693 KB
Volume: 254
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1402540213

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In the Mediterranean, the parasitic copepod Lepeophtheirus thompsoni Baird, 1850 specifically infests turbot (Psetta maxima L., 1758), whereas L. europaensis Zeddam, Berrebi, Renaud, Raibaut, and Gabrion, 1988 infests brill (Scophthalmus rhombus L., 1758) and flounder (Platichthys flesus L., 1758). Experimental infestation of turbot by copepods from each of the three fish species showed an absence of any physiological incompatibility preventing natural development of the two parasite species, at least on one host species, i.e., the turbot. Moreover, interspecific hybrids were obtained experimentally, which implies that 1) there is no strict genetic barrier between the two species and 2) the natural prezygotic isolation results from a choice of the most favorable habitat. We discuss the origin and possible consequences of the presence, in the Mediteranean, of L. europaensis on brill and flounder, two hosts separated by their taxonomic status and ecobiology.

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