New Guinean bandicoots: New insights into diet, dentition and digestive tract morphology and a dietary review of all extant non-Australian peramelemorphia

Abstract

Little is known about the diets and ecology of New Guinea's 14 bandicoot species. In order to better understand the diet and digestive morphology of these marsupials, we reviewed the literature, studied the dental morphology, conducted analysis of gastrointestinal contents, and measured the digestive tracts of: Echymipera clara, E. davidi, E. kalubu, E. rufescens, Isoodon macrourus, Microperoryctes ornata, M. papuensis and Peroryctes raffrayana. These species consume a mix of fungi, insects and plant material that is broadly consistent with the omnivorous diet characteristic of most Australian bandicoots; however, morphological observations reveal variation between species that likely reflect finer-scale differences in diet. Dental morphology suggests a wider variety of diets (insectivore, omnivore, frugivore) than on the Australian mainland (mostly omnivore). Dissections and measurements of the digestive tract of seven New Guinean species indicate variation linked to diet. The relatively short caecum in all New Guinean species, but especially in E. clara and E. kalubu, is particularly suggestive of limited consumption of fibrous plant material; the relative length of the large intestine suggests variable capacity for water reabsorption. Our dietary data also suggest that some of these species also play an important role in the dispersal of hypogeous fungi.

RAS ID

42714

Document Type

Journal Article

Date of Publication

2021

Funding Information

In Situ Science Research Excellence Award University of New England

School

Centre for Ecosystem Management / School of Science

Copyright

subscription content

Publisher

CSIRO

Identifier

Melissa Danks

ORCID : 0000-0002-4044-6694

Comments

Elliott, T. F., Travouillon, K. J., Warburton, N. M., Danks, M. A., & Vernes, K. (2021). New Guinean bandicoots: New insights into diet, dentition and digestive tract morphology and a dietary review of all extant non-Australian Peramelemorphia. Australian Mammalogy, 44(2), 266-279. https://doi.org/10.1071/AM21015

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Link to publisher version (DOI)

10.1071/AM21015