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Redescription of Caligus serratus Shiino, 1965 (Copepoda: Caligidae) parasitic on eleven fish species from Chamela Bay in the Mexican Pacific

100%

Morales-Serna F. N., Hernandez-Inda Z. L., Gomez S., Leon G. P.-P.

Acta Parasitologica

2013

tom 58

nr 3

Caligus serratus Shiino, 1965 (Copepoda: Caligidae), a parasite on 11 fish species caught in Chamela Bay off the Pacific Coast of Mexico, is redescribed based on material found on Pacific agujon needlefish Tylosurus pacificus (Steindachner, 1876). Caligus serratus can be distinguished from its congeners by the combination of the following characters: i) short abdomen (approximately 0.2 times as long as cephalothorax), ii) pointed posteromedial process on the first segment of the antenna, iii) sternal furca with bluntly pointed, diverging tines, and iv) leg 4 exopod bearing 3 unequal, distal spines (the shortest 0.2 times the length of the longest). Microphotographs of female and illustrations of both female and male are provided. The redescription of this species might be useful given its low host specificity.

Caligus tenuifurcatus Wilson, 1937 [Copepoda, Siphonostomatoida], a parasite of centropomid and lutjanid teleosts from a coastal system of the Mexican Pacific

80%

Suarez-Morales E., Ho J., Santana-Pineros A. M.

Acta Parasitologica

2008

tom 53

nr 4

Specimens of the parasitic siphonostomatoid copepod Caligus tenuifurcatus Wilson, 1937 were collected from the oral cavity of the yellowfin snook, Centropomus robalito Jordan et Gilbert; the white snook, C. viridis Lockington (Perciformes, Centropomidae), and the yellow snapper, Lutjanus argentiventris (Peters) (Perciformes, Lutjanidae), from a Pacific coastal system of Mexico. Infection was most intense on C. viridis. Caligus tenuifurcatus can be distinguished from its closest congener, C. bonito Wilson, by the body proportions and the basal ornamentation of the medial setae of the second exopodal segment of leg 1. Taxonomic illustrations are provided of both female and male. This is the third record of C. tenuifurcatus; hitherto, it was known only as a parasite of the roosterfish Nematistius pectoralis Gill (Perciformes, Nematistiidae) from Panama and the Gulf of California. Hence, the finding of C. tenuifurcatus as a parasite of two species of centropomids and one species of lutjanid represents a significant expansion of the known host range of this copepod in the eastern tropical Pacific.

Ograniczanie wyników

2 Acta Parasitologica

1 Gomez S.

1 Hernandez-Inda Z. L.

1 Ho J.

1 Leon G. P.-P.

1 Morales-Serna F. N.

1 Santana-Pineros A. M.

1 Suarez-Morales E.

1 2013

1 2008

Wyniki wyszukiwania

Redescription of Caligus serratus Shiino, 1965 (Copepoda: Caligidae) parasitic on eleven fish species from Chamela Bay in the Mexican Pacific

Caligus tenuifurcatus Wilson, 1937 [Copepoda, Siphonostomatoida], a parasite of centropomid and lutjanid teleosts from a coastal system of the Mexican Pacific