T. F. Elliott, K. Travouillon, N. Warburton, M. Danks, K. Vernes
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.
{"title":"New Guinean bandicoots: new insights into diet, dentition and digestive tract morphology and a dietary review of all extant non-Australian Peramelemorphia","authors":"T. F. Elliott, K. Travouillon, N. Warburton, M. Danks, K. Vernes","doi":"10.1071/am21015","DOIUrl":"https://doi.org/10.1071/am21015","url":null,"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.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49112789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Berris, S. Cooper, W. Breed, Joshua R. Berris, S. Carthew
Remnant natural populations of greater bilbies (Macrotis lagotis) are confined to the Australian arid zone where bilbies construct and shelter in multiple burrows within their home range. We investigated burrow use behaviour of bilbies in a translocated population in temperate southern Australia to determine if behaviour differed in this climatic zone. Over a 12 month period, 43 adult bilbies at Venus Bay Conservation Park were spool-and-line tracked to 118 burrows. Active burrow density was 0.55 per ha, and bilbies at the site used multiple burrows (up to 13 for males and 8 for females) and regularly moved between diurnal burrows. Male bilbies had significantly larger burrow ranges (10.2 ± 5.8 ha, MCP100, mean ± s.d.) than females (2.6 ± 1.8 ha), and were similar in size to those recorded in an arid zone population. Males’ burrow ranges tended to overlap with the burrow range of multiple other males and females. The density of burrows in the current study suggests that bilby burrows were likely to have been a common landscape feature within the southern parts of the species range prior to their local extinction. Further research is needed to determine the impact of the loss of bilby burrows from southern Australia on other burrow commensal species.
大兔耳袋狸(Macrotis lagotis)的残余自然种群被限制在澳大利亚的干旱地区，在那里，兔耳袋狸在它们的家园范围内建造和庇护多个洞穴。我们在澳大利亚南部温带地区的一个易地种群中调查了兔耳袋狸的洞穴使用行为，以确定这种行为是否在这个气候带有所不同。在12个月的时间里，研究人员对金星湾自然保护公园的43只成年兔耳袋狸进行了118个洞穴的跟踪调查。活动洞穴密度为每公顷0.55个，该地点的兔耳袋狸使用多个洞穴(雄性多达13个，雌性多达8个)，并定期在日间洞穴之间移动。雄性兔耳袋狸的洞穴范围(10.2±5.8 ha, MCP100, mean±s.d)明显大于雌性兔耳袋狸(2.6±1.8 ha)，其大小与干旱区种群相似。雄性的洞穴范围倾向于与多个其他雄性和雌性的洞穴范围重叠。目前研究中洞穴的密度表明，兔耳袋狸在当地灭绝之前，洞穴可能是该物种范围南部地区的常见景观特征。需要进一步的研究来确定南澳大利亚兔耳袋狸洞穴的消失对其他洞穴共生物种的影响。
{"title":"Burrow use by bilbies in temperate South Australia","authors":"K. Berris, S. Cooper, W. Breed, Joshua R. Berris, S. Carthew","doi":"10.1071/am20027","DOIUrl":"https://doi.org/10.1071/am20027","url":null,"abstract":"Remnant natural populations of greater bilbies (Macrotis lagotis) are confined to the Australian arid zone where bilbies construct and shelter in multiple burrows within their home range. We investigated burrow use behaviour of bilbies in a translocated population in temperate southern Australia to determine if behaviour differed in this climatic zone. Over a 12 month period, 43 adult bilbies at Venus Bay Conservation Park were spool-and-line tracked to 118 burrows. Active burrow density was 0.55 per ha, and bilbies at the site used multiple burrows (up to 13 for males and 8 for females) and regularly moved between diurnal burrows. Male bilbies had significantly larger burrow ranges (10.2 ± 5.8 ha, MCP100, mean ± s.d.) than females (2.6 ± 1.8 ha), and were similar in size to those recorded in an arid zone population. Males’ burrow ranges tended to overlap with the burrow range of multiple other males and females. The density of burrows in the current study suggests that bilby burrows were likely to have been a common landscape feature within the southern parts of the species range prior to their local extinction. Further research is needed to determine the impact of the loss of bilby burrows from southern Australia on other burrow commensal species.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48945234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Moore, J. Dunlop, C. Jolly, Ella Kelly, J. Woinarski, E. Ritchie, S. Burnett, S. van Leeuwen, L. Valentine, M. Cowan, D. Nimmo
In response to Australia’s current extinction crisis, substantial research efforts have been targeted towards some of the most imperilled species. One such species is the northern quoll (Dasyurus hallucatus), a marsupial predator that has recently suffered substantial declines in range and is now listed as Endangered. We conducted a systematic review of all literature relevant to the conservation and ecology of northern quolls. We reviewed 143 studies, including research articles, government and industry reports, theses, and books, and quantified research effort in terms of topic, location, and publication period. We then summarised research relevant to northern quoll taxonomy, genetics, distribution, habitat associations, diet, reproduction, movement, threats, management, and Indigenous knowledge. Research effort was higher between 2011 and 2020 than the previous four decades combined. Northern quolls in the Northern Territory were the most studied, followed by the Pilbara, the Kimberley, and Queensland populations. Most studies focused on northern quoll distribution and habitat, management, and threats – primarily cane toads, predation, and fire. We conclude with a non-exhaustive list of ten future research directions. If pursued, these future research directions should provide information critical to managing and conserving northern quolls.
{"title":"A brief history of the northern quoll (Dasyurus hallucatus): a systematic review","authors":"H. Moore, J. Dunlop, C. Jolly, Ella Kelly, J. Woinarski, E. Ritchie, S. Burnett, S. van Leeuwen, L. Valentine, M. Cowan, D. Nimmo","doi":"10.1071/am21002","DOIUrl":"https://doi.org/10.1071/am21002","url":null,"abstract":"In response to Australia’s current extinction crisis, substantial research efforts have been targeted towards some of the most imperilled species. One such species is the northern quoll (Dasyurus hallucatus), a marsupial predator that has recently suffered substantial declines in range and is now listed as Endangered. We conducted a systematic review of all literature relevant to the conservation and ecology of northern quolls. We reviewed 143 studies, including research articles, government and industry reports, theses, and books, and quantified research effort in terms of topic, location, and publication period. We then summarised research relevant to northern quoll taxonomy, genetics, distribution, habitat associations, diet, reproduction, movement, threats, management, and Indigenous knowledge. Research effort was higher between 2011 and 2020 than the previous four decades combined. Northern quolls in the Northern Territory were the most studied, followed by the Pilbara, the Kimberley, and Queensland populations. Most studies focused on northern quoll distribution and habitat, management, and threats – primarily cane toads, predation, and fire. We conclude with a non-exhaustive list of ten future research directions. If pursued, these future research directions should provide information critical to managing and conserving northern quolls.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49048867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Undertaking accurate counts is an important part of managing cave-dwelling bats species such as the little bent-wing bat (Miniopterus australis) population at Mt Etna. A thermal camera and automated counting system were trialled to see if the technology would work at Mt Etna with the goal of producing accurate counts of bats. Although the heat radiating from the rock meant that the background at Mt Etna was not perfect, the automated system was able to recognise and count the bats as they emerged. The number of bats emerging from the cave varied from 82 677 in 2017/18 through to 139 783 in 2018/19. These estimates are within the range of those made in the 1960 to 1980s, which suggests that the population is stable, but we are unsure of the accuracy of these previous counts. These results demonstrate that it is possible to obtain accurate counts of reasonably large bat populations such as Bat Cleft and the methodology may have application for other gregarious and nocturnal species whose numbers can be difficult to count at night.
{"title":"Monitoring bent-wing bats at Bat Cleft in Central Queensland","authors":"J. Augusteyn, Dennis Matthews, Samuel Richards","doi":"10.1071/am21010","DOIUrl":"https://doi.org/10.1071/am21010","url":null,"abstract":"Undertaking accurate counts is an important part of managing cave-dwelling bats species such as the little bent-wing bat (Miniopterus australis) population at Mt Etna. A thermal camera and automated counting system were trialled to see if the technology would work at Mt Etna with the goal of producing accurate counts of bats. Although the heat radiating from the rock meant that the background at Mt Etna was not perfect, the automated system was able to recognise and count the bats as they emerged. The number of bats emerging from the cave varied from 82 677 in 2017/18 through to 139 783 in 2018/19. These estimates are within the range of those made in the 1960 to 1980s, which suggests that the population is stable, but we are unsure of the accuracy of these previous counts. These results demonstrate that it is possible to obtain accurate counts of reasonably large bat populations such as Bat Cleft and the methodology may have application for other gregarious and nocturnal species whose numbers can be difficult to count at night.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47488888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Vernes, S. Jackson, T. F. Elliott, K. Elliott, Steven G. Carr
The desert rat-kangaroo or ‘ngudlukanta’ (Caloprymnus campestris) was once sparsely distributed in the Lake Eyre Basin of north-eastern South Australia and adjacent parts of Queensland, but has not been collected since the 1930s. However, numerous reported sightings, including some recent, provide some hope that it may still be extant. In 2018 and 2019, we searched for evidence of this species at sites where it had been collected in the 1930s, and at places where people have since reported seeing an animal that fits its description. Our survey, which analysed data from more than 6000 camera trap nights, 536 predator scats and 226 km of spotlight transects, was the most extensive field-based search ever undertaken for this animal; but we found no evidence for its continued existence. However, our work did detect other threatened species including a range extension for the kowari (Dasyuroides byrnei), thereby demonstrating the value of surveys like this one. Because of the vastness and inaccessibility of much of the terrain comprising the supposed distribution of C. campestris, we do not see our null result as definitive for this poorly surveyed animal; we instead hope that it provides a starting point for future surveys aimed at resolving its status.
{"title":"A search for the desert rat-kangaroo or ngudlukanta (Caloprymnus campestris) in north-eastern South Australia","authors":"K. Vernes, S. Jackson, T. F. Elliott, K. Elliott, Steven G. Carr","doi":"10.1071/am21022","DOIUrl":"https://doi.org/10.1071/am21022","url":null,"abstract":"The desert rat-kangaroo or ‘ngudlukanta’ (Caloprymnus campestris) was once sparsely distributed in the Lake Eyre Basin of north-eastern South Australia and adjacent parts of Queensland, but has not been collected since the 1930s. However, numerous reported sightings, including some recent, provide some hope that it may still be extant. In 2018 and 2019, we searched for evidence of this species at sites where it had been collected in the 1930s, and at places where people have since reported seeing an animal that fits its description. Our survey, which analysed data from more than 6000 camera trap nights, 536 predator scats and 226 km of spotlight transects, was the most extensive field-based search ever undertaken for this animal; but we found no evidence for its continued existence. However, our work did detect other threatened species including a range extension for the kowari (Dasyuroides byrnei), thereby demonstrating the value of surveys like this one. Because of the vastness and inaccessibility of much of the terrain comprising the supposed distribution of C. campestris, we do not see our null result as definitive for this poorly surveyed animal; we instead hope that it provides a starting point for future surveys aimed at resolving its status.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43222358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wilma B. Mavea, O. Belonovich, Elizah Nagombi, Tracey Boslogo, Lisle Gwynn, R. Russ, Jeremy P. Bird
A recent assessment of spatial conservation priorities in mega-diverse Papua New Guinea noted a lack of marine data. We surveyed cetaceans in inshore and pelagic waters along the south coast of New Britain island. The total number of cetaceans encountered was 397, attributed to at least 6 species, with spinner dolphins and pantropical spotted dolphins both the most frequently sighted and abundant species. Although diversity and abundance were lower than expected, we hope that by contributing to a national cetacean sightings database this survey will support a growing understanding of marine mammal diversity and distribution within the region.
{"title":"A survey of cetaceans in New Britain, Papua New Guinea","authors":"Wilma B. Mavea, O. Belonovich, Elizah Nagombi, Tracey Boslogo, Lisle Gwynn, R. Russ, Jeremy P. Bird","doi":"10.1071/am21005","DOIUrl":"https://doi.org/10.1071/am21005","url":null,"abstract":"A recent assessment of spatial conservation priorities in mega-diverse Papua New Guinea noted a lack of marine data. We surveyed cetaceans in inshore and pelagic waters along the south coast of New Britain island. The total number of cetaceans encountered was 397, attributed to at least 6 species, with spinner dolphins and pantropical spotted dolphins both the most frequently sighted and abundant species. Although diversity and abundance were lower than expected, we hope that by contributing to a national cetacean sightings database this survey will support a growing understanding of marine mammal diversity and distribution within the region.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49342045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tahlia I. Pollock, David P. Hocking, Daniel O. Hunter, M. Parrott, Monika Zabinskas, A. Evans
The success of carnivorous mammals is determined not only by their ability to locate and kill prey, but also their efficiency at consuming it. Breaking large prey into small pieces is challenging due to the strong and tough materials that make up a carcass (e.g. hide, muscle, and bone). Carnivores therefore require a diverse suite of prey-processing behaviours to utilise their catch. Tasmanian devils are Australia’s only large marsupial scavengers and have the ability to consume almost all of a carcass. To determine how they do this we analysed 5.5 hours of footage from 21 captive and wild devils feeding at carcasses. We documented 6320 bouts of 12 distinct prey-processing behaviours, performed at frequencies that varied throughout feeds and between groups. The time point in the feed influenced the types of behaviours used. This is likely due to changing prey size, as different techniques appear better suited to handling whole carcasses or large pieces (pulling and pinning) or smaller pieces (holding and manipulating). Group size impacted the frequency of social pulling behaviours, which increased with the number of animals. Our findings highlight the range of prey-processing behaviours performed by scavenging devils when handling, breaking down, and consuming a carcass. The devils’ repertoire shares similarities with large carnivores that handle and consume whole carcasses as well as small carnivores that are adept in grasping and handling smaller prey.
{"title":"Torn limb from limb: the ethology of prey-processing in Tasmanian devils (Sarcophilus harrisii)","authors":"Tahlia I. Pollock, David P. Hocking, Daniel O. Hunter, M. Parrott, Monika Zabinskas, A. Evans","doi":"10.1071/am21006","DOIUrl":"https://doi.org/10.1071/am21006","url":null,"abstract":"The success of carnivorous mammals is determined not only by their ability to locate and kill prey, but also their efficiency at consuming it. Breaking large prey into small pieces is challenging due to the strong and tough materials that make up a carcass (e.g. hide, muscle, and bone). Carnivores therefore require a diverse suite of prey-processing behaviours to utilise their catch. Tasmanian devils are Australia’s only large marsupial scavengers and have the ability to consume almost all of a carcass. To determine how they do this we analysed 5.5 hours of footage from 21 captive and wild devils feeding at carcasses. We documented 6320 bouts of 12 distinct prey-processing behaviours, performed at frequencies that varied throughout feeds and between groups. The time point in the feed influenced the types of behaviours used. This is likely due to changing prey size, as different techniques appear better suited to handling whole carcasses or large pieces (pulling and pinning) or smaller pieces (holding and manipulating). Group size impacted the frequency of social pulling behaviours, which increased with the number of animals. Our findings highlight the range of prey-processing behaviours performed by scavenging devils when handling, breaking down, and consuming a carcass. The devils’ repertoire shares similarities with large carnivores that handle and consume whole carcasses as well as small carnivores that are adept in grasping and handling smaller prey.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48210680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maquel E. Brandimarti, R. Gray, Zoe J. Hilton, T. Keeley, ‘Kangaroo' Phil Murray, C. Herbert
Testosterone has a dualistic effect in males by promoting sexual ornamentation at the cost of immune defence. This trade-off has been demonstrated in several taxa, such that males often host a greater parasite burden compared with female conspecifics. We suppressed testosterone in wild male eastern grey kangaroos (Macropus giganteus) for 10 weeks using a novel gonadotropin-releasing hormone (GnRH) vaccine, Bopriva. We evaluated the impact of testosterone suppression on testes width, parameters of health, tick and worm burden in kangaroos using a before-after-control-impact (BACI) experimental design. Given the potential impact of animal movement on parasite burden, core area use of a subset of males was also determined. Bopriva significantly reduced testosterone in male kangaroos as well as reducing the combined size of testes by 9.6% (P = 0.01). There was no detectable effect of testosterone suppression on parasite burden and core area use in Treated kangaroos compared to Control (placebo) and Before treatment animals. Our results suggest that a duration of suppression longer than 10 weeks may be required to observe changes in parasite burden. Overall, this study provides a suitable framework for future studies to test whether reproductive hormones influence energy allocation, parasitism, and reproductive strategies in marsupials.
{"title":"The effect of testosterone suppression on health and parasite burden in male eastern grey kangaroos (Macropus giganteus)","authors":"Maquel E. Brandimarti, R. Gray, Zoe J. Hilton, T. Keeley, ‘Kangaroo' Phil Murray, C. Herbert","doi":"10.1071/am21017","DOIUrl":"https://doi.org/10.1071/am21017","url":null,"abstract":"Testosterone has a dualistic effect in males by promoting sexual ornamentation at the cost of immune defence. This trade-off has been demonstrated in several taxa, such that males often host a greater parasite burden compared with female conspecifics. We suppressed testosterone in wild male eastern grey kangaroos (Macropus giganteus) for 10 weeks using a novel gonadotropin-releasing hormone (GnRH) vaccine, Bopriva. We evaluated the impact of testosterone suppression on testes width, parameters of health, tick and worm burden in kangaroos using a before-after-control-impact (BACI) experimental design. Given the potential impact of animal movement on parasite burden, core area use of a subset of males was also determined. Bopriva significantly reduced testosterone in male kangaroos as well as reducing the combined size of testes by 9.6% (P = 0.01). There was no detectable effect of testosterone suppression on parasite burden and core area use in Treated kangaroos compared to Control (placebo) and Before treatment animals. Our results suggest that a duration of suppression longer than 10 weeks may be required to observe changes in parasite burden. Overall, this study provides a suitable framework for future studies to test whether reproductive hormones influence energy allocation, parasitism, and reproductive strategies in marsupials.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43658010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Population monitoring of arboreal mammals should be informed by estimates of detection probabilities from different methods. We employed trapping and spotlighting across 36 transects to detect the squirrel glider (Petaurus norfolcensis). Repeat surveys were conducted over five sessions. We used multi-method occupancy to compare these methods. The probability of detection did not differ between one night of spotlighting (0.23 ± 0.04, mean ± s.e.), or one night of trapping (0.22 ± 0.03). Trapping continued for three nights, which led to the probability of detection rising to 0.41 ± 0.04. Spotlighting was only conducted once per session. These methods would require equivalent effort when conducted over three nights. Further investigation is required to compare this and other methods such as camera trapping and spotlighting with thermal cameras.
{"title":"Comparison of spotlighting and trapping in population surveys of the squirrel glider","authors":"R. Goldingay, B. D. Taylor","doi":"10.1071/am20072","DOIUrl":"https://doi.org/10.1071/am20072","url":null,"abstract":"Population monitoring of arboreal mammals should be informed by estimates of detection probabilities from different methods. We employed trapping and spotlighting across 36 transects to detect the squirrel glider (Petaurus norfolcensis). Repeat surveys were conducted over five sessions. We used multi-method occupancy to compare these methods. The probability of detection did not differ between one night of spotlighting (0.23 ± 0.04, mean ± s.e.), or one night of trapping (0.22 ± 0.03). Trapping continued for three nights, which led to the probability of detection rising to 0.41 ± 0.04. Spotlighting was only conducted once per session. These methods would require equivalent effort when conducted over three nights. Further investigation is required to compare this and other methods such as camera trapping and spotlighting with thermal cameras.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42040612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The mitochondrial genome of the rare endemic New Guinean dasyurid Phascolosorex doriae (Thomas 1886) has been used to clarify relationships within ‘phascolosoricinae’. The mitochondrial genome has the typical gene arrangement seen in other marsupials. Molecular analyses using complete mitogenomes of other dasyurids resolve the red-bellied dasyure as sister to the narrow-striped dasyure Phascolosorex dorsalis and show that these two species diverged in the early Pliocene. The invasion of emergent New Guinean rainforest habitats (in the late Miocene) by the common ancestor of Ph. doriae, Ph. dorsalis and Neophascogale lorentzii represents one of three separate such invasions by dasyurid lineages.
{"title":"Molecular relationships of the red-bellied dasyure (Phascolosorex doriae) – a rare marsupial from western New Guinea","authors":"M. Westerman, Stella Loke, M. H. Tan","doi":"10.1071/am21011","DOIUrl":"https://doi.org/10.1071/am21011","url":null,"abstract":"The mitochondrial genome of the rare endemic New Guinean dasyurid <italic>Phascolosorex doriae</italic> (<xref ref-type=\"bibr\" rid=\"R11\">Thomas 1886</xref>) has been used to clarify relationships within ‘phascolosoricinae’. The mitochondrial genome has the typical gene arrangement seen in other marsupials. Molecular analyses using complete mitogenomes of other dasyurids resolve the red-bellied dasyure as sister to the narrow-striped dasyure <italic>Phascolosorex dorsalis</italic> and show that these two species diverged in the early Pliocene. The invasion of emergent New Guinean rainforest habitats (in the late Miocene) by the common ancestor of <italic>Ph. doriae</italic>, <italic>Ph. dorsalis</italic> and <italic>Neophascogale lorentzii</italic> represents one of three separate such invasions by dasyurid lineages.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42733813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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