Body-size prey size relationships in insectivorous marsupials - tests of 3 hypotheses

Fisher, D. O. and Dickman, C. R. (1993) Body-size prey size relationships in insectivorous marsupials - tests of 3 hypotheses. Ecology, 74 6: 1871-1883. doi:10.2307/1939944

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Author Fisher, D. O.
Dickman, C. R.
Title Body-size prey size relationships in insectivorous marsupials - tests of 3 hypotheses
Journal name Ecology   Check publisher's open access policy
ISSN 0012-9658
1939-9170
Publication date 1993-09-01
Year available 1993
Sub-type Article (original research)
DOI 10.2307/1939944
Open Access Status File (Publisher version)
Volume 74
Issue 6
Start page 1871
End page 1883
Total pages 13
Place of publication Washington, DC, United States
Publisher Ecological Society of America
Language eng
Abstract There is a strong positive correlation between the body sizes of dasyurid marsupials and the mean sizes of their invertebrate prey. This study tests three hypotheses proposed to explain this relationship, using 21 species of dasyurids (body mass range: 5-200 g) throughout continental Australia: (1) the maximum prey size that can be physically handled increases with dasyurid size due to the restricted gapes or forces of biting of smaller dasyurids; (2) the prey size that maximizes rate of energy intake varies with dasyurid size, with animals preferentially consuming the most profitable prey; and (3) prey sizes encountered during foraging vary with dasyurid size.
Keyword Australia
Dasyurids
Energy Gain
Foraging Microhabitat
Insectivores
Mammals
Marsupials
Morphological Constraint
Predator Body Size Vs Prey Size
Prey Encounter
Prey Taken Vs Gape Size and Biting Force
Antechinus-Stuartii Marsupialia
Sorex-Araneus L
Ecological Consequences
Community Structure
Microhabitat Use
Optimal Diet
Fruit Size
Predation
Selection
Dasyuridae
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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