Scatter-hoarding by musky rat-kangaroos, Hypsiprymnodon moschatus, a tropical rain-forest marsupial from Australia: implications for seed dispersal

Dennis, Andrew J. (2003) Scatter-hoarding by musky rat-kangaroos, Hypsiprymnodon moschatus, a tropical rain-forest marsupial from Australia: implications for seed dispersal. Journal of Tropical Ecology, 19 (6). pp. 619-627.

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Abstract

Tropical forests around the world contain animals that scatter-hoard fruits and seeds but few are known in Australian tropical forests. This study used both direct observation and spool-and-line tracking of simulated fruits to demonstrate that Australia's smallest kangaroos disperse large numbers of rain-forest fruits and seeds. They did so in two ways, either by scatter-hoarding or by carrying them away from the source to devour the flesh before dropping the seed on to the litter surface. The fruits used included a range of fruit types but particularly species with large fleshy fruit. Caches occurred as a single fruit pressed into the soil and covered with litter a mean distance of 17 m (±2.7 SE) and up to 68 m from the source. Musky rat-kangaroos handled up to 2700 fruits ha-1 mo-1 and they dispersed up to 900 fruits ha-1 mo-1 and cached up to 690 fruits ha-1 mo-1. This behaviour is a significant example of convergent evolution, which reflects similar behaviour found in agoutis, acouchies and squirrels on other continents.

Item ID: 13790
Item Type: Article (Refereed Research - C1)
Keywords: frugivore; kangaroo; macropodoidea; marsupial; scatter-hoard
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ISSN: 1469-7831
Date Deposited: 29 Nov 2010 03:17
FoR Codes: 06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069999 Biological Sciences not elsewhere classified @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
Citation Count from Web of Science Web of Science 16
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