Australian Mammalogy最新文献_第10页

Factors affecting the frequency and outcome of platypus entanglement by human rubbish 影响鸭嘴兽被人类垃圾缠绕频率和结果的因素

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-04-20 DOI: 10.1071/AM21004

M. Serena, Geoff Williams

{"title":"Factors affecting the frequency and outcome of platypus entanglement by human rubbish","authors":"M. Serena, Geoff Williams","doi":"10.1071/AM21004","DOIUrl":"https://doi.org/10.1071/AM21004","url":null,"abstract":"The platypus’s tapered shape and benthic foraging habits predispose it to becoming entangled in encircling rings or loops of plastic, rubber or metal rubbish. Based on 54 cases of litter entanglement recorded in Victorian live-trapping surveys, items may encircle the neck (68%), torso (8%), jaw (2%) or be wrapped bandolier-fashion from in front of a shoulder to behind the opposite foreleg (22%). Entanglement frequency was eight times higher in the greater Melbourne region than in regional Victoria, and was significantly greater in first-year juveniles than in older animals and also in adult/subadult females compared with adult/subadult males. Items recovered from carcasses or from rescued animals that were unlikely to have survived without human intervention included elastic hair-ties, fishing line, a hospital identification wristband, an engine gasket and a plastic ring seal from a food jar; all of these items had cut through skin and (in most cases) deeply into underlying tissue. Up to 1.5% of the platypus residing in the greater Melbourne area and 0.5% of those living in regional Victoria are estimated to be at risk of entanglement-related injuries or death at any point in time.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49502497","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}

引用次数: 0

Targeted survey for the eastern quoll (Dasyurus viverrinus) in the Nungatta and Yambulla areas of southern New South Wales 对新南威尔士州南部Nungatta和Yambulla地区的东部袋鼬(Dasyurus viverrinus)进行了有针对性的调查

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-04-14 DOI: 10.1071/AM20060

Ben Hope, R. Bilney, J. Peterie

引用次数: 0

Environmental factors influencing the distribution of the Kangaroo Island dunnart (Sminthopsis fuliginosus aitkeni) 影响袋鼠岛杜纳特分布的环境因素

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-04-09 DOI: 10.1071/AM19036

R. Hohnen, B. Murphy, S. Legge, C. Dickman, P. Hodgens, Heidi Groffen, R. Molsher, Jody P. Gates, J. Woinarski

{"title":"Environmental factors influencing the distribution of the Kangaroo Island dunnart (Sminthopsis fuliginosus aitkeni)","authors":"R. Hohnen, B. Murphy, S. Legge, C. Dickman, P. Hodgens, Heidi Groffen, R. Molsher, Jody P. Gates, J. Woinarski","doi":"10.1071/AM19036","DOIUrl":"https://doi.org/10.1071/AM19036","url":null,"abstract":"Determining the factors that drive the distributions of threatened species is often critical for informing effective conservation management actions. Species distribution models can be used to distinguish common habitat features shared by limited historical records and identify other areas where a species might persist. In this study, we built a species distribution model for the Endangered and cryptic Kangaroo Island dunnart (Sminthopsis fuliginosus aitkeni). We fitted generalised linear models using incidental records and presence-absence data from surveys between 1969 and 2018. In the models we included the variables rainfall, percentage native vegetation in the surrounding 2 km2, and post-fire vegetation age. The modelling suggested that rainfall and to a lesser extent post-fire vegetation age are good predictors of dunnart occurrence, with dunnart occurrence greatest in areas of high rainfall (>600 mm) and vegetation age classes <30 years post fire. Potentially suitable habitat for the KI dunnart was predicted to be on the central-western side of Kangaroo Island. These results suggest that careful fire management could benefit the dunnart, and that decreased rainfall (as projected by Australian climate models), will be a threat in the long term. Extensive recent fires on western Kangaroo Island suggest that climate-related threats are already being realised.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48070652","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}

引用次数: 0

Intraspecific variation in testis organisation and sperm head morphology of the delicate mouse (Pseudomys delicatulus): its possible causes and consequences 娇嫩小鼠（Pseudomys delicatulus）睾丸组织和精子头形态的种内变异：可能的原因和后果

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-30 DOI: 10.1071/AM20057

E. Peirce, TlalliAztlan Moya-Smith, C. Leigh, W. Breed

{"title":"Intraspecific variation in testis organisation and sperm head morphology of the delicate mouse (Pseudomys delicatulus): its possible causes and consequences","authors":"E. Peirce, TlalliAztlan Moya-Smith, C. Leigh, W. Breed","doi":"10.1071/AM20057","DOIUrl":"https://doi.org/10.1071/AM20057","url":null,"abstract":"The delicate mouse (Pseudomys delicatulus) ranges from Queensland to northern Western Australia. In this study the morphology of the cellular organisation of the testis and cauda epididymal spermatozoa are compared. Individuals from the mainland of the Northern Territory and Western Australia invariably have only 60–70% of the testes composed of seminiferous tubules with the interstitial tissue between the tubules containing abundant lipid rich Leydig cells, whereas the cauda epididymal sperm have highly polymorphic, often pear-shaped, heads and basally attached tails. In individuals from Queensland the seminiferous tubules make up approximately 80% of the testis, whereas in the cauda epididymides the sperm populations are generally less variable and have bilaterally flattened heads with the tail attached to the lower concave surface. These differences in the morphology of the delicate mouse testis and spermatozoa in these two geographic regions suggest differences in intensity of intermale sperm competition, with individuals from northern Western Australia and the mainland of the Northern Territory exhibiting monogamy whereas those from Queensland may exhibit some degree of intermale sperm competition and hence possibly have a polyandrous or promiscuous mating system. These findings support the suggestion that P. delicatulus, as currently recognised, contains at least one cryptic species.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47276146","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}

引用次数: 1

The myth of wild dogs in Australia: are there any out there? 澳大利亚野狗的神话:那里有野狗吗?

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-26 DOI: 10.1071/AM20055

K. Cairns, M. Crowther, B. Nesbitt, Mike Letnic

{"title":"The myth of wild dogs in Australia: are there any out there?","authors":"K. Cairns, M. Crowther, B. Nesbitt, Mike Letnic","doi":"10.1071/AM20055","DOIUrl":"https://doi.org/10.1071/AM20055","url":null,"abstract":"Hybridisation between wild and domestic canids is a global conservation and management issue. In Australia, dingoes are a distinct lineage of wild-living canid with a controversial domestication status. They are mainland Australia’s apex terrestrial predator. There is ongoing concern that the identity of dingoes has been threatened from breeding with domestic dogs, and that feral dogs have established populations in rural Australia. We collate the results of microsatellite DNA testing from 5039 wild canids to explore patterns of domestic dog ancestry in dingoes and observations of feral domestic dogs across the continent. Only 31 feral dogs were detected, challenging the perception that feral dogs are widespread in Australia. First generation dingo × dog hybrids were similarly rare, with only 27 individuals identified. Spatial patterns of genetic ancestry across Australia identified that dingo populations in northern, western and central Australia were largely free from domestic dog introgression. Our findings challenge the perception that dingoes are virtually extinct in the wild and that feral dogs are common. A shift in terminology from wild dog to dingo would better reflect the identity of these wild canids and allow more nuanced debate about the balance between conservation and management of dingoes in Australia.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48861872","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}

引用次数: 13

First record of a pygmy sperm whale (Kogia breviceps, Blainville, 1838) stranding along the coast of Viti Levu, Fiji 首次记录到一头侏儒抹香鲸（Kogia breviceps，Blainville，1838）在斐济维提岛海岸搁浅

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-16 DOI: 10.1071/AM21007

Jasha Dehm, Rufino Varea, C. Hewavitharane, B. Stockwell, K. T. Brown

引用次数: 0

DIY radio-collar attachment for small macropods 适用于小型大型足类的DIY无线电项圈附件

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-15 DOI: 10.1071/AM20068

A. Ross, J. Lawes, Jane Lowry, Mike Letnic

引用次数: 3

Effectiveness of thermal cameras compared to spotlights for counts of arid zone mammals across a range of ambient temperatures 与聚光灯相比，热像仪在不同环境温度下对干旱区哺乳动物计数的有效性

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-12 DOI: 10.1071/AM20040

Hugh W. McGregor, K. Moseby, Christopher N. Johnson, S. Legge

{"title":"Effectiveness of thermal cameras compared to spotlights for counts of arid zone mammals across a range of ambient temperatures","authors":"Hugh W. McGregor, K. Moseby, Christopher N. Johnson, S. Legge","doi":"10.1071/AM20040","DOIUrl":"https://doi.org/10.1071/AM20040","url":null,"abstract":"Effective monitoring of mammal species is critical to their management. Thermal cameras may enable more accurate detection of nocturnal mammals than visual observation with the aid of spotlights. We aimed to measure improvements in detection provided by thermal cameras, and to determine how these improvements depended on ambient temperatures and mammal species. We monitored small to medium sized mammals in central Australia, including small rodents, bettongs, bilbies, European rabbits, and feral cats. We conducted 20 vehicle-based camera transects using both a spotlight and thermal camera under ambient temperatures ranging from 10°C to 35°C. Thermal cameras resulted in more detections of small rodents and medium sized mammals. There was no increased benefit for feral cats, likely due to their prominent eyeshine. We found a strong relationship between increased detections using thermal cameras and environmental temperature: thermal cameras detected 30% more animals than conventional spotlighting at approximately 15°C, but produced few additional detections above 30°C. Spotlighting may be more versatile as it can be used in a greater range of ambient temperatures, but thermal cameras are more accurate than visual surveys at low temperatures, and can be used to benchmark spotlight surveys.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45016596","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}

引用次数: 3

Temporal effect of feeding on the body temperature and behaviour of captive koalas (Phascolarctos cinereus) 摄食对圈养无尾熊体温和行为的时间效应

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-01 DOI: 10.1071/AM20024

D. Adam, S. Johnston, L. Beard, V. Nicolson, A. Lisle, J. Gaughan, R. Larkin, P. Theilemann, W. Ellis

{"title":"Temporal effect of feeding on the body temperature and behaviour of captive koalas (Phascolarctos cinereus)","authors":"D. Adam, S. Johnston, L. Beard, V. Nicolson, A. Lisle, J. Gaughan, R. Larkin, P. Theilemann, W. Ellis","doi":"10.1071/AM20024","DOIUrl":"https://doi.org/10.1071/AM20024","url":null,"abstract":"Free-ranging koalas generally feed at night; however, captive koalas are usually fed during the day in order to encourage activity for display purposes. We studied the temporal effect of feeding on body temperature of captive koalas in Queensland, to determine whether nocturnal feeding may be beneficial for koalas in warmer climates. Six adult koalas were implanted with thermal transmitters and data loggers, waxed together as a single package, to record internal body temperature. Koalas were exposed to two treatments: koalas were fed in the morning (between 0730 and 0830 hours) during the AM treatment or late afternoon (between 1700 and 1800 hours) for the PM treatment. The body temperature of koalas fed in the mornings was on average 0.5°C higher at its peak (P ≤ 0.01) when compared to koalas fed in the evening. Furthermore, the body temperature maxima of morning-fed koalas was reached ~2 h earlier in the afternoon, compared with those fed in the evening. There was no significant difference between behaviours associated with the two feeding regimes: inactivity (P = 0.840), feeding (P = 0.472) and activity (P = 0.634). We postulate that nocturnal feeding by koalas may be an adaptive mechanism that reduces diurnal heat load during times of high environmental temperatures.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42384792","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}

引用次数: 3

Geometric differences between the crania of Australian hopping mice (Notomys, Murinae, Rodentia) 澳洲跳鼠(Notomys, Murinae, Rodentia)颅骨的几何差异

IF 1.2 4区生物学

Australian Mammalogy Pub Date : 2021-03-01 DOI: 10.1071/AM20067

B. H. Alhajeri

{"title":"Geometric differences between the crania of Australian hopping mice (Notomys, Murinae, Rodentia)","authors":"B. H. Alhajeri","doi":"10.1071/AM20067","DOIUrl":"https://doi.org/10.1071/AM20067","url":null,"abstract":"Half of the ten Australian hopping mice (Notomys) species have become extinct following the European colonisation of Australia, and most of the rest are threatened. This makes the study of their present diversity paramount. Although recent molecular phylogenies improved our understanding of the relationships among the species, detailed interspecific phenotypic comparisons are still lacking. This is the aim of the present study. Geometric morphometric methods were used to compare the crania of all five extant species (N. alexis, N. aquillo, N. cervinus, N. fuscus, and N. mitchellii) along with the extinct N. longicaudatus. Although previous work (based on traditional approaches) find intragenerically conserved crania, the present study discovers significant differences in cranial size and shape among Notomys species, with the ventral view being more distinct than the dorsal view. There was no evidence of sexual dimorphism in cranial size nor shape, and only a weak allometric effect. Most aspects of cranial shape differed among the species. The extant species pair that differed in cranial shape the most was N. aquilo – N. cervinus, differing in the foramen magnum, tympanic bulla, orbit, incisive foramen, and rostrum, along with cranial width, potentially a consequence of N. cervinus’ phylogenetic position, and N. aquilo’s s ecological uniqueness.","PeriodicalId":48851,"journal":{"name":"Australian Mammalogy","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48136138","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}

引用次数: 5