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Two New Species of Clavella (Copepoda, Siphonostomatoida, Lernaeopodidae) and a New Species of Lophoura (Copepoda, Siphonostomatoida, Sphyriidae): Parasites on the Deep-Water Fish, Nezumia Pulchella from the Northern Chilean Coast

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[Three new species of parasitic copepods were isolated from the macrourid fish, Nezumia pulchella (Pequeño, 1971), caught along the northern Chilean coast, and are described and illustrated herein. Clavella singularis n. sp. is characterized by the shape and armature of the second antenna, and, by a combination of characteristics, can be distinguished from all other congeneric species bearing a genital process. Clavella fortis n. sp. is characterized by a strong cephalosome and by a combination of characteristics that also differentiates it from its congeners with a genital process. The new species, Lophoura unilobulata is characterized by the presence of a simple holdfast, with one lobe on each side of the neck. With this report, the number of reported Clavella species parasitizing fish from the Chilean coast increases to nine. In addition, the L. unilobulata reported herein represents the third record of a Lophoura species parasitizing a species of the genus Nezumia and represents the first record of the genus in the southeastern Pacific ocean; it is also the third record of a species of the family Sphyriidae occurring along the Chilean coast. Tres nuevas especies de copépodos parásitos sobre un macrourido, Nezumia pulchella desde la costa norte de Chile son descritas e ilustradas. Clavella singularis n. sp. se caracteriza por la forma y armadura de la segunda antena y puede ser distinguida de todas sus congéneres, con proceso genital, por una combinación de caracteres. Clavella fortis n. sp. se caracteriza por su fuerte cefalosoma, es también diferenciada de sus congéneres con proceso genital, por una combinación de características. La nueva especie Lophoura unilobulata se caracteriza por la presencia de una estructura de anclaje simple, con sólo un lóbulo sobre cada lado de su cuello. Con este reporte el número de especies de Clavella en la costa de Chile se incrementa a nueve. L. unilobulata es el tercer registro de una especie de Lophoura parasitando a especies de Nezumia. Adicionalmente, este descubrimiento representa el primer registro del género en el Pacífico Sur Este, y es la tercera especie de Sphyriidae habitando la costa de Chile., Three new species of parasitic copepods were isolated from the macrourid fish, Nezumia pulchella (Pequeño, 1971), caught along the northern Chilean coast, and are described and illustrated herein. Clavella singularis n. sp. is characterized by the shape and armature of the second antenna, and, by a combination of characteristics, can be distinguished from all other congeneric species bearing a genital process. Clavella fortis n. sp. is characterized by a strong cephalosome and by a combination of characteristics that also differentiates it from its congeners with a genital process. The new species, Lophoura unilobulata is characterized by the presence of a simple holdfast, with one lobe on each side of the neck. With this report, the number of reported Clavella species parasitizing fish from the Chilean coast increases to nine. In addition, the L. unilobulata reported herein represents the third record of a Lophoura species parasitizing a species of the genus Nezumia and represents the first record of the genus in the southeastern Pacific ocean; it is also the third record of a species of the family Sphyriidae occurring along the Chilean coast. Tres nuevas especies de copépodos parásitos sobre un macrourido, Nezumia pulchella desde la costa norte de Chile son descritas e ilustradas. Clavella singularis n. sp. se caracteriza por la forma y armadura de la segunda antena y puede ser distinguida de todas sus congéneres, con proceso genital, por una combinación de caracteres. Clavella fortis n. sp. se caracteriza por su fuerte cefalosoma, es también diferenciada de sus congéneres con proceso genital, por una combinación de características. La nueva especie Lophoura unilobulata se caracteriza por la presencia de una estructura de anclaje simple, con sólo un lóbulo sobre cada lado de su cuello. Con este reporte el número de especies de Clavella en la costa de Chile se incrementa a nueve. L. unilobulata es el tercer registro de una especie de Lophoura parasitando a especies de Nezumia. Adicionalmente, este descubrimiento representa el primer registro del género en el Pacífico Sur Este, y es la tercera especie de Sphyriidae habitando la costa de Chile.]

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/content/journals/10.1163/156854008x400586
2009-04-01
2015-04-26

Affiliations: 1: Universidad de Antofagasta, Depto. Acuicultura, Casilla 170, Antofagasta, Chile;, Email: rcastro@uantof.cl; 2: Universidad de Antofagasta, Instituto de Investigaciones Oceanológicas, Casilla 170, Antofagasta, Chile;, Email: mtgonzalez@uantof.cl

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