Spatial and social organization of a carnivorous marsupial Dasyurus hallucatus (Marsupialia: Dasyuridae)

The northern quoll Dasyurus hallucatus is a sexually dimorphic carnivorous marsupial found in northern Australia. Despite males weighing up to 1120 g, in at least some populations all males die after mating. Radio-tracking and live-trapping at a lowland savanna site in Kakadu National Park indicated that females occupied home ranges averaging 35 ha with intra-sexually exclusive denning areas. There was some overlap of foraging ranges when the density was 3–4 females/km 2 , but no overlap during periods of lower population density (1–2 females/km 2 ). Male home-range size may be similar to females before the mating season, but expands during the mating season to > 100 ha to overlap extensively with several female ranges and numerous other male ranges. Despite this range overlap, both sexes were solitary. Even during the mating period, males denned on average 0.27 km from females during the day. During the mating period, each female was visited by at least one to four males per night. During this period, the increase in scat deposition in prominent positions in the landscape and the simultaneous increase in sternal gland activity of the males suggest the importance of olfactory communication to advertise the presence and sexual status of individuals. Males adopted a roving strategy, regularly visiting several widely spaced females in rapid succession, presumably to monitor the onset of oestrus. This intense physical effort during the mating period is likely to be a major contributor to the physiological decline of the males and subsequent die-off after the mating period. The marked sexual dimorphism of D. hallucatus may be the result of selection for larger, wider-ranging males in a promiscuous mating system and for energetically efficient smaller females, as females rear the young alone.

[1]  C. Chapman,et al.  Defended versus undefended home range size of carnivores, ungulates and primates , 1992, Behavioral Ecology and Sociobiology.

[2]  J. L. Gittleman,et al.  Home range scaling: intraspecific and comparative trends , 1991, Oecologia.

[3]  A. Cockburn,et al.  Lek promiscuity in a semelparous mammal, Antechinus stuartii (Marsupialia: Dasyuridae)? , 1988, Behavioral Ecology and Sociobiology.

[4]  J. L. Gittleman,et al.  Carnivore home-range size, metabolic needs and ecology , 1982, Behavioral Ecology and Sociobiology.

[5]  P. Waser.  Sociality or territorial defense? The influence of resource renewal , 1981, Behavioral Ecology and Sociobiology.

[6]  A. Cockburn,et al.  Semelparity in a large marsupial , 2001, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[7]  T. Soderquist,et al.  Juvenile behaviour and dispersal of chuditch (Dasyurus geoffroii) (Marsupialia : Dasyuridae) , 2000 .

[8]  M. Oakwood.  Reproduction and demography of the northern quoll, Dasyurus hallucatus, in the lowland savanna of northern Australia , 2000 .

[9]  D. Spratt,et al.  Parasites of the northern quoll, Dasyurus hallucatus (Marsupialia:Dasyuridae) in tropical savanna, Northern Territory , 2000 .

[10]  D. Pritchard,et al.  Little evidence of toxoplasmosis in a declining species, the northern quoll (Dasyurus hallucatus) , 1999 .

[11]  M. Oakwood.  The ecology of the Northern Quoll, Dasyurus hallucatus , 1997 .

[12]  C. Jones,et al.  Correlates of reproductive success within alternative mating tactics of the common shrew , 1996 .

[13]  Richard J. Williams,et al.  Fire weather in the wet‐dry tropics of the World Heritage Kakadu National Park, Australia , 1996 .

[14]  T. Soderquist.  Spatial organization of the arboreal carnivorous marsupial Phascogale tapoatafa , 1995 .

[15]  A. Griffiths,et al.  Demographic variation and range contraction in the northern quoll, Dasyurus hallucatus (MArsupialia : Dasyuridae). , 1994 .

[16]  A. Cockburn,et al.  Use of nest trees by Antechinus stuartii, a semelparous lekking marsupial , 1992 .

[17]  A. Cockburn,et al.  Social and foraging components of the home range in Antechinus stuartii (Dasyuridae: Marsupialia) , 1991 .

[18]  K. A. Lazenby-Cohen.  Communal Nesting in Antechinus stuartii (Marsupialia : Dasyuridae) , 1991 .

[19]  R. Ostfeld,et al.  The ecology of territoriality in small mammals. , 1990, Trends in ecology & evolution.

[20]  Stephen Harris,et al.  Home‐range analysis using radio‐tracking data–a review of problems and techniques particularly as applied to the study of mammals , 1990 .

[21]  M. Serena,et al.  Spatial organization of a riparian population of the carnivorous marsupial Dasyurus geoffroii , 1989 .

[22]  T. Clutton‐Brock.  Review Lecture: Mammalian mating systems , 1989, Proceedings of the Royal Society of London. B. Biological Sciences.

[23]  A. Bradley,et al.  Ecology and physiology of the northern quoll, Dasyurus hallucatus (Marsupialia, Dasyuridae), at Mitchell Plateau, Kimberley, Western Australia , 1989 .

[24]  King.  An Assessment of the Hazard Posed to Northern Quolls (Dasyurus-Hallucatus) by Aerial Baiting With 1080 to Control Dingoes , 1989 .

[25]  R. Ims.  Spatial clumping of sexually receptive females induces space sharing among male voles , 1988, Nature.

[26]  R. Ims.  Male Spacing Systems in Microtine Rodents , 1987, The American Naturalist.

[27]  D. Macdonald,et al.  The sociality of solitary foragers: a model based on resource dispersion , 1986, Animal Behaviour.

[28]  Richard S. Ostfeld,et al.  Territoriality and mating system of California voles , 1986 .

[29]  Steven W. Buskirk,et al.  HOME RANGE, TIME, AND BODY SIZE IN MAMMALS' , 1986 .

[30]  R. Ostfeld.  Limiting Resources and Territoriality in Microtine Rodents , 1985, The American Naturalist.

[31]  P. Waser,et al.  Natal Philopatry Among Solitary Mammals , 1983, The Quarterly Review of Biology.

[32]  David W. Macdonald,et al.  The ecology of carnivore social behaviour , 1983, Nature.

[33]  R. Begg.  The Small Mammals of Little Nourlangie Rock, N.T III. Ecology of Dasyurus hallucatus, the Northern Quoll (Marsupialia : Dasyuridae) , 1981 .

[34]  K. Dixon,et al.  Harmonic mean measure of animal activity areas , 1980 .

[35]  A. Harestad,et al.  Home Range and Body Weight‐‐A Reevaluation , 1979 .

[36]  T. Clutton‐Brock,et al.  Mammals, resources and reproductive strategies , 1978, Nature.

[37]  S. Emlen,et al.  Ecology, sexual selection, and the evolution of mating systems. , 1977, Science.

[38]  B. McNab,et al.  Bioenergetics and the Determination of Home Range Size , 1963, The American Naturalist.

[39]  Eugene P. Odum,et al.  Measurement of territory and home range size in birds , 1955 .

[40]  C. O. Mohr,et al.  Table of equivalent populations of North American small mammals , 1947 .