Folia Parasitologica 53[3] 211-216 (2006) | DOI: 10.14411/fp.2006.027

Comparative description of males of two species of Achtheres von Nordmann, 1832 (Copepoda: Siphonostomatoida: Lernaeopodidae) infecting zander and European perch

Wojciech Piasecki, Agnieszka Sękowska-Jakubowska, Ewa Sobecka
Division of Fish Diseases, Agricultural University of Szczecin, ul. Kazimierza Królewicza 4, 71-550 Szczecin, Poland

Achtheres percarum von Nordmann, 1832 and Achtheres sandrae Gadd, 1901 (Lernaeopodidae) are common parasitic copepods infecting fishes in Eurasia. The former is specific to perch, Perca fluviatilis L., while the latter, to zander, Sander lucioperca (L.). Until recently these copepods have been regarded a single species. The present study was intended to analyse details of male morphology and provide their complete descriptions with differential diagnosis. Males of A. percarum and A. sandrae were collected from perch and zander at Lake D±bie (north-western Poland). The males of A. sandrae are larger than those of A. percarum. They also differ in proportions of the first antenna, mandibular denticulation, structure of the first maxilla, and the armament of caudal ramus. The reported differences in male morphology constitute a conclusive confirmation of the separate identity of the two species.

Keywords: parasitic copepod, male, morphology, systematics, Achtheres sandrae, Achtheres percarum

Received: October 3, 2005; Accepted: May 9, 2006; Published: September 1, 2006  Show citation

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Piasecki, W., Sękowska-Jakubowska, A., & Sobecka, E. (2006). Comparative description of males of two species of Achtheres von Nordmann, 1832 (Copepoda: Siphonostomatoida: Lernaeopodidae) infecting zander and European perch. Folia Parasitologica, 53(3), 211-216. doi: 10.14411/fp.2006.027
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