If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Free Content Prey Selection by the Atlantic Angel Shark Squatina Dumeril in the Northeastern Gulf of Mexico

 Download
(PDF 377.7kb)
 
Download Article:

Abstract:

Atlantic angel sharks Squatina dumeril (Lesueur, 1818) were collected for stomach content analysis from a trawl fishery in northeastern Florida in the winter (n = 50) and spring (n = 59) of 2005. The trawl catch was also sampled to describe the potential prey items in the environment in relation to stomach contents of angel sharks. Angel sharks consumed teleost fishes most often (62% and 75% numerical abundance), with squid (24% and 12% numerical abundance) and crustaceans (13% and 14% numerical abundance) also important in their diet in the winter and spring, respectively. On both occasions, the samples from the trawl catch showed that jacks (Carangidae, mostly Trachurus lathami Nichols, 1920) were the most frequently caught group of fishes, followed by porgies (Sparidae, mostly Stenotomus caprinus Jordan and Gilbert, 1882), with goatfishes (Mullidae) and butterfishes (Stromateidae) also commonly caught. Angel sharks collected in the winter and spring both showed prey selection for squids, while those collected in the spring also showed selection for scorpionfishes (Scorpaenidae), hakes (Phycidae), and croakers (Sciaenidae). The sizes of prey items from stomach contents were skewed toward smaller fish than those in the trawl catch, however, sizes of prey items were not significantly different from those in the trawl. This study provides the first quantification of diet for the Atlantic angel shark.

Document Type: Research Article

Publication date: May 1, 2008

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more