Metazoan parasites of marine mammals from the Caribbean and the western coast of North America
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Abstract
Studies concerning marine mammal parasites are scarce and some are outdated. I
document the metazoan parasites of cetaceans and sirenians from Puerto Rico, the
U.S. and British Virgin Islands, and of cetacean and pinnipeds from California using
both morphological and genetic identification. Forty cetaceans and manatees were
salvaged in the Caribbean between 1992 and 2004 and 28 marine mammals were
salvaged in California between 1974 and 2002. Parasitic specimens were collected
after necropsy and fixed in 10% formalin or preserved in 70% ethanol. Parasites were
mounted in lactophenol for morphological identification. Because of morphological
similarities between nematode parasites, genetic identification was performed on 36
helminthes. For California, six species of nematodes, two cestodes, one
acanthocephalan and one arthropod were found. For the Caribbean, eight species of
nematodes, two cestodes, two acanthocephalans, and three species of trematodes were
identified. These constitute two new host records for the west coast of North America.
Seven new host records and five new geographic records were found for the
Caribbean. Los estudios concernientes a parásitos de mamíferos marinos, resultan escasos y en
algunos casos anticuados. Documento parásitos de cetáceos y sirenios para Puerto
Rico, las islas Vírgenes Estadounidenses y Británicas, así como los parásitos de
cetáceos y pinnípedos de California. La metodología utilizada para la identificación se
baso en la morfología y la genética. Los parásitos fueron obtenidos durante las
necropsias practicadas, 40 cadáveres de cetáceos y manatíes entre los años 1992-2004
y 28 cadáveres de mamíferos marinos en California entre los años 1974-2002. Los
parásitos fueron fijados en formalina al 10% o etanol al 70%. La identificación
morfológica se realizó usando preparaciones en lactofenol de los ejemplares
examinados. Debido a las similitudes entre los nemátodos parasíticos, fue llevado a
cabo un análisis en 36 helmíntos. Fueron encontradas seis especies de nemátodos, dos
céstodos, un acantocéfalo, y un artrópodo para los mamíferos procedentes de
California, ocho especies de nemátodos, dos céstodos, dos acantocéfalos, y tres
tremátodos para los mamíferos procedentes del Caribe. Los resultados incluyen dos
nuevos reportes de hospedero para la costa oeste de Norte América y siete nuevos
reportes geográficos para el área del Caribe.
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