Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/74763
Title: Feeding ecology of "Hygophum hygomii" in the Canary Islands Region (Central-east Atlantic)
Authors: García Marrero, Arminda
Director: Castro Hernández, José Juan 
UNESCO Clasification: 2401 Biología animal (zoología)
3105 Peces y fauna silvestre
Keywords: Mesopelagic fishes
Myctophidae
Hygophum hygomii
Canary Islands
Diet composition
Issue Date: 2017
Abstract: Lanternfishes are the mesopelagic community most abundant worldwide, such as Hygophum hygomii, which performs extensive diel migrations across the water column, between the surface to 1000 m of depth, interacting with plankton and micronekton at multiple depths, and generally feeding in the epipelagic layers at night. The diet composition was determined for juvenile and adult individuals, but also by sex, from samples obtained during cruises done by the B/E “La Bocaina” off the Canary Islands (Central-East Atlantic) from 1997 to 2002. A diet shift towards larger prey was evident from juveniles to adult individuals, at the time that ontogenetic changes occur in the relationship between head and body lengths, and it is probably associated to a change of habitat and/or a larger vertical migration. Hygophum hygomii showed a positive selection for copepods, but also they fed on mysids, euphausiids, decapod larvae, and other zooplankton components (such as chaetognats, amphipods, polychaetes, isopods, fishes, and gastropods larvae). Knowledge about H. hygomii ´s life story will provide information not only as a potential exploitable resource, but also for a better understanding of the pelagic ecosystem.
Department: Biología
Faculty: Facultad de Ciencias del Mar
Degree: Máster Universitario en Gestión Sostenible de Recursos Pesqueros
URI: http://hdl.handle.net/10553/74763
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