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Resumen del producto
Gómez Gutiérrez, J., M.C., . Strüder-Kypke, D.H., Lynn, C.T., Shaw, A., López-Cortés, , Mario J. Aguilar-Méndez & C.J., Robinson
(2011).
Genetic evidence of distinct new Collinia species, parasitoids of krill from the Bering Sea to Baja California peninsula region.
5th International Zooplankton Production Symposium. Population Connerctions, Community Cynamics, and Climate Variability.
Pucón, Chile, Chile, marzo 14 - 18, 2011,
100.
Genetic evidence of distinct new Collinia species, parasitoids of krill from the Bering Sea to Baja California peninsula region
Jaime Gómez Gutiérrez, Michaela C . Strüder-Kypke, Denis H. Lynn, Caroline Tracy Shaw, Alejandro López-Cortés, Mario J. Aguilar-Méndez y Carlos Jorge Robinson
To explore the ecological function and host specificity of krill parasitoids, we used molecular methods to identify three Collinia species, ciliates that kill the seven most abundant and trophically relevant krill species in the Northeastern Pacific Ocean (23–55°N), occasionally causing massive epizootic events. Genetic evidence showed host specificity: Collinia beringensis infects Thysanoessa inermis, Thysanoessa raschii, and Thysanoessa longipes in the Bering Sea; Collinia oregonensis infects Euphausia pacifica, Thysanoessa spinifera, and Thysanoessa gregaria along the Oregon and California coasts; and an as-yet undescribed species of Collinia infects the sac-spawning Nyctiphanes simplex along the west coast of Baja California and in the Gulf of California. The new Collinia species revealed two novel features of the Collinia life-cycle: (1) all life stages are associated with opportunistic bacterial assemblages that can end in bacter.
Palabras clave: Krill; Collinia; cox1
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