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RESEARCH ARTICLE
Contents Vol 46(3)

The golden-backed tree-rat (Mesembriomys macrurus) (Peters 1876): reproduction, growth, development and behaviour in captivity

J. Anne Kerle * and Michael R. Fleming
* Correspondence to: annekerle@bigpond.com

Handling Editor: Bronwyn McAllan

Australian Mammalogy 46, AM24007 https://doi.org/10.1071/AM24007
Submitted: 29 February 2024  Accepted: 10 July 2024  Published: 29 July 2024

© 2024 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of the Australian Mammal Society.

Abstract

The golden-backed tree-rat (Mesembriomys macrurus) is a large semi-arboreal rodent that has suffered a significant reduction in range since European settlement. Seven (three male, four female) founding adults for a captive colony were captured on the Mitchell Plateau, Western Australia, and transferred to Alice Springs, Northern Territory. The reproduction, growth, development and behaviour of M. macrurus in captivity were recorded. Twenty-three litters were born with litter size of 1–3 (median litter size: 2; overall sex ratio parity). There was no apparent seasonality in breeding. Oestrous cycle (9.9 ± 0.4 days) and gestation (46.8 ± 2.8 days) were estimated from known births and birth dates determined from calculated growth curves. Mean weight at birth was 17.2 g (±1.3, n = 12) and growth of the young was rapid, with head length reaching the asymptote from 54 days and head-body length from 83 days. Young were weaned at about 40 days and adult pelage complete by 98 days. Reproductive maturity occurred from 5 to 6 months for females and in males testes became scrotal from 76 days. Developmental stages and captive behaviour were also recorded. These results are compared with reproduction and growth of the closely related black-footed tree-rat (M. gouldii) and brush-tailed rabbit-rat (Conilurus penicillatus).

Keywords: captive breeding, conservation concern, gestation, growth curves, Mitchell Plateau, oestrous cycle, semi-arboreal, tropical rodent.

References

Breed, W. G., Aplin, K. P., and Rowe, K. C. (2023). True Rats and Mice, Tribe Hydromyinae. In ‘Strahan’s Mammals of Australia’, 4th edn. (Eds A. M. Baker, I. C. Gynther) pp. 403–405. (Reed New Holland: Sydney.)

Crichton, E. G. (1969). Reproduction in the pseudomine rodent Mesembriomys gouldii (Gray) (Muridae). Australian Journal of Zoology 17, 785-797.
| Crossref | Google Scholar |

Fox, B. J. (1985). A graphical method for estimating length of gestation and estrus cycle length from birth intervals in rodents. Journal of Mammalogy 66, 168-173.
| Crossref | Google Scholar |

Fox, B. J., and Kemper, C. M. (1982). Growth and Development of (Rodentia: Muridae) in the Laboratory. Australian Journal of Zoology 30, 175-185 https://doi.org/10.1071/ZO9820175.
| Google Scholar |

Friend, G. R. (1987). Population ecology of Mesembriomys gouldii (Rodentia: Muridae) in the wet-dry tropics of the Northern Territory. Australian Wildlife Research 14, 293-303.
| Crossref | Google Scholar |

Friend, G. R., and Taylor, J. A. (1985). Habitat preferences of small mammals in tropical open-forest of the Northern Territory. Australian Journal of Ecology 10, 173-185.
| Crossref | Google Scholar |

Friend, G. R., Morris, K. D., and McKenzie, N. L. (1991). The mammal fauna of Kimberley rainforests. In ‘Kimberley Rainforests of Australia’. (Eds N. L. McKenzie, R. B. Johnston, P. G. Kendrick.) pp. 393–412. (Surrey Beatty and Sons: Chipping Norton.)

Gibson, L. A., and McKenzie, N. L. (2023). Golden-backed tree-rat Mesembriomys macrurus (Peters1876). In ‘Strahan’s Mammals of Australia’, 4th edn. (Eds A. M. Baker, I. C. Gynther) pp. 403–405. (Reed New Holland: Sydney.)

Hohnen, R., Tuft, K. D., Legge, S., Radford, I. J., Carver, S., and Johnson, C. N. (2015). Post-fire habitat use of the golden-backed tree-rat (Mesembriomys macrurus) in the northwest Kimberley, Western Australia. Austral Ecology 40, 941-952.
| Crossref | Google Scholar |

IUCN (2019) The IUCN Red List of Threatened Species. Version 2019-1. Available at www.iucnredlist.org [accessed: 17 May 2024].

Kemper, C. M. (1976a). Growth and development of the Australian murid Pseudomys novaehollandiae. Australian Journal of Zoology 24, 27-37.
| Crossref | Google Scholar |

Kemper, C. M. (1976b). Reproduction of Pseudomys novaehollandiae (Muridae) in the laboratory. Australian Journal of Zoology 24, 159-167.
| Crossref | Google Scholar |

Kemper, C. M. (2021). Growth and development of the brush-tailed rabbit-rat (Conilurus penicillatus), a threatened tree-rat from northern Australia. Australian Mammalogy 43, 151-159.
| Crossref | Google Scholar |

Kemper, C. M., Firth, R. S. C., and Davies, H. F. (2023). Brush-tailed rabbit-rat Conilurus penicillatus (Gould 1842). In ‘Strahan’s Mammals of Australia’, 4th edn. (Eds A. M. Baker, I. C. Gynther) pp. 406–408. (Reed New Holland: Sydney.)

Kerle, J. A., and Burgman, M. A. (1984). Some aspects of the ecology of the mammal fauna of the Jabiluka area, Northern Territory. Australian Wildlife Research 11, 207-222.
| Crossref | Google Scholar |

Kerle, J. A., Kemper, C. M., Fleming, M. R., Friend, G. A., and Senn, M. (202451. doi.org/10.1071/WR24023). Niche separation of three species of tree-rat (black-footed tree-rat M. gouldii, golden-backed tree-rat Mesembriomys macrurus and brush-tailed rabbit-rat Conilurus penicillatus) on the Mitchell Plateau, Western Australia. Australian Wildlife Research 51(WR24023),.
| Crossref | Google Scholar |

Kitchener, D., Keller, L. E., Chapman, N. L., McKenzie, N. L., Start, A. N., and Kenneally, K. F. (1981). Observations on mammals of the Mitchell Plateau area, Kimberley, Western Australia. In ‘Part 4: Biological survey of Mitchell Plateau and Admiralty Gulf, Kimberley, Western Australia. Papers resulting from a joint field expedition to Mitchell Plateau, Kimberley, by the Western Australian Museum, Perth, and the Field Museum of Natural History, Chicago, U.S.A., 1976-1977’. pp. 123–169. (A Western Australian Museum Publication)

McKenzie, N. L., and Kerle, J. A. (2008). Golden-backed tree-rat Mesembriomys macrurus (Peters 1876). In ‘The Mammals of Australia’, 3rd edn. (Eds S. Van Dyck, R. Strahan.) pp. 593–595. (Reed New Holland: Sydney.)

Olsen, P. D. (1982). Reproductive biology and development of the water rat, Hydromys chrysogaster, in captivity. Australian Wildlife Research 9, 39-53.
| Crossref | Google Scholar |

Ondei, S., Prior, L. D., McGreggor, H. W., Reid, A. M., Johnson, C. M., Vigilante, T., Goonack, C., Williams, D., and Bowman, D. M. J. S. (2020). Small mammal diversity is higher in infrequently compared with frequently burnt rainforest-savanna mosaics in the north Kimberley, Australia. Wildlife Research 48, 218-229.
| Crossref | Google Scholar |

Rankmore, B. R., Woinarski J. C. Z., and Friend G. R. (2023). Black-footed Tree-rat Mesembriomys gouldii (Gray 1843). In ‘Strahan’s Mammals of Australia’, 4th edn. (Eds A. M. Baker, I. C. Gynther.) pp. 424–425. (Reed New Holland: Sydney.)

Ricklefs, R. E. (1967). A graphical method of fitting growth curves. Ecology 48, 978-983.
| Crossref | Google Scholar |

Tjørve, K. M. C., and Tjørve, E. (2017). The use of Gompertz models in growth analyses, and new Gompertz-model approach: An addition to the Unified-Richards family. PLoS One 12(6), e0178691.
| Crossref | Google Scholar | PubMed |

Turpin, J. (2015). North Kimberley mammals – in the fringe of the high-rainfall zone. Australian Mammalogy 37, 132-145.
| Crossref | Google Scholar |

Woinarski, J. C. Z. (2000). The conservation status of rodents in the monsoonal tropics of the Northern Territory. Wildlife Research 27, 421-435.
| Crossref | Google Scholar |

Woinarski, J., Pavey, C., Kerrigan, R., Cowie, I., and Ward, S. (2007). ‘Lost From Our Landscape. Threatened Species of the Northern Territory.’ (Northern Territory Government.)

Woinarski, J. C. Z., Legge, S., Fitzsimons, J. A., Traill, B. J., Burbidge, A. A., Fisher, A., Firth, R. S. C., Gordon, I. J., Griffiths, A. D., Johnson, C. N., McKenzie, N. L., Palmer, C., Radford, I., Rankmore, B., Ritchie, E. G., Ward, S., and Zembicki, M. (2011). The disappearing mammal fauna of northern Australia: context, cause and response. Conservation Letters 4, 192-201.
| Crossref | Google Scholar |