How do cephalopods become available to seabirds: can fish gut contents from tuna fishing vessels be a major food source of deep-dwelling cephalopods?.

Xavier, J. C., Cherel, Y., Roberts, J. and Piatkowski, Uwe (2013) How do cephalopods become available to seabirds: can fish gut contents from tuna fishing vessels be a major food source of deep-dwelling cephalopods?. Open Access ICES Journal of Marine Science, 70 (1). pp. 46-49. DOI 10.1093/icesjms/fss167.

[img]
Preview
Text
icesjms.fss167.full.pdf - Published Version

Download (199Kb) | Preview

Supplementary data:

Abstract

Cephalopods are important prey for numerous seabird species. However, the physical mechanisms by which cephalopods (particularly species considered as deep-dwelling) become available to seabirds are poorly understood, and it has recently been suggested that the discarded stomachs of gutted fish captured by tuna longliners can be a major source of deep-dwelling species. Here, we identify some deep-dwelling cephalopods that appear in the diet of seabirds, review the current knowledge of their vertical distribution, and compare the stomach contents of commercially captured tuna with those of seabirds foraging in the same area. The limited available information leads us to conclude that tuna longliners are unlikely to be a major source of deep-dwelling cephalopods for seabirds. However, much more information is required on the ecology of seabird prey, particularly commercially unexploited cephalopod species, which may be obtained from scientific cruises devoted to cephalopod biological research. In addition multispecies/foodweb modelling studies may be required to explore potential interactions between seabirds, their predators and prey, and commercial fishing operations.

Document Type: Article
Additional Information: WOS:000312644500004
Keywords: SOUTH GEORGIA; DIOMEDEA-EXULANS; DISSOSTICHUS-ELEGINOIDES; INTERANNUAL VARIATION; WANDERING ALBATROSS; DIVING DEPTHS; DIET; INFORMATION; OCEAN; FISHERIES
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1093/icesjms/fss167
ISSN: 1054-3139
Date Deposited: 10 Dec 2012 10:04
Last Modified: 23 Sep 2019 17:28
URI: http://oceanrep.geomar.de/id/eprint/19620

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...