Methods for analysis of natural diet in portunid crabs (Crustacea:Decapoda:Portunidae)

Williams M.J. (1981) Methods for analysis of natural diet in portunid crabs (Crustacea:Decapoda:Portunidae). Journal of Experimental Marine Biology and Ecology, 52 1: 103-113. doi:10.1016/0022-0981(81)90174-X


Author Williams M.J.
Title Methods for analysis of natural diet in portunid crabs (Crustacea:Decapoda:Portunidae)
Journal name Journal of Experimental Marine Biology and Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 1981-05-04
Sub-type Article (original research)
DOI 10.1016/0022-0981(81)90174-X
Volume 52
Issue 1
Start page 103
End page 113
Total pages 11
Subject 1104 Complementary and Alternative Medicine
1105 Dentistry
2303 Ecology
Abstract Merits of the points and occurrence methods for measuring the relative importance of types of food eaten by four species of portunid crabs (Portunus pelagicus (Linnaeus, 1766), Thalamita crenata H. Milne Edwards 1834, T. danae Stimpson 1858, and T. sima H. Milne Edwards 1834) have been compared. Both methods describe different aspects of the relative importance of food items and the scores given by each were highly correlated for most types of food. The points method is unsuitable for foods which consist of a high proportion of soft tissue whereas the occurrence method is appropriate for most foods. Fewer types of food were found in nearly empty gastric mills than in full mills. A sample size of approximately 30 gastric mills, each at least 50% full, was determined empirically to be adequate for a description of natural diet.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Tue, 14 Jun 2016, 01:55:35 EST by System User