检索结果-南通市图书馆

Land use and dingo baiting are correlated with the density of kangaroos in rangeland systems

Integrative Zoology 2023年第2期18卷 299-315页

作者： Stuart J.DAWSON Tracey L.KREPLINS Malcolm S.KENNEDY Juanita RENWICK Mark A.COWAN patricia a.fleming Terrestrial Ecosystem Science and Sustainability Harry Butler InstituteMurdoch UniversityMurdochAustralia Department of Primary Industries and Regional Development(present address) South PerthAustralia Department of Primary Industries and Regional Development NorthamAustralia Queensland Department of Environment and Science Australia Queensland Department of Environment and Science MoggillAustralia Department of Biodiversity Conservation and AttractionsWoodvaleAustralia

Rangelands worldwide have been subject to broadscale modiﬁcation,such as widespread predator control,intro-duction of permanent livestock water and altered vegetation to improve *** Australia,these landscape changes have resulted in kangaroos(*** macropods)populations increasing over the past 200 ***-garoos are a key contributor to total grazing pressure and in conjunction with livestock and feral herbivores have been linked to land *** used 22 years of aerial survey data to investigate whether the density of 3 macropod species in the southern rangelands of Western Australia was associated with:(i)land use,including type of livestock,total livestock,density of feral goats,type of land tenure,and kangaroo commercial harvest effort;(ii)predator management,including permitted dingo control effort,estimated dingo abundance,and presence of the State Barrier Fence(a dingo exclusion fence);and(iii)environmental variables:ruggedness,rainfall,fractional cover,and total standing dry *** kangaroos(Osphranter rufus)were most abundant inﬂat,open vegetation,on pastoral land,where area permitted for dingo control was high,and numbers were positively associated with antecedent rainfall with a 12-month *** grey kangaroos(Macropus fuliginosus)were most abundant onﬂat,agricultural land,but less abundant in areas with high permitted dingo ***(Osphranter robustus)were most abundant in rugged pastoral land with open vegetation,where permitted dingo control was *** environmental variables are key drivers of landscape productivity and kangaroo populations,anthropogenic factors such as land use and permitted dingo control are strongly associated with kangaroo abundance.

关键词： herbivores livestock macropods overgrazing rangelands total grazing pressure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Keeping an ear out:size relationship of the tympanic bullae and pinnae in bandicoots and bilbies(Marsupialia:Peramelemorphia)

引用

Current Zoology 2022年第3期68卷 251-264页

作者： Melissa C.TAYLOR Kenny J.TRAVOUILLON Margaret E.ANDREW patricia a.fleming Natalie M.WARBURTON Terrestrial Ecosystem Science and Sustainability Harry Butler InstituteMurdoch University90 South StMurdochWA 6150Australia Collections and Research Western Australian MuseumWelshpoolWA 6106Australia

Bandicoots and bilbies(Order Peramelemorphia)occupy a broad range of habitats across Australia and New Guinea,from open,arid deserts to dense *** once diverse group has been particularly vulnerable to habitat loss and introduced eutherian predators,and numerous species extinctions and range retractions have *** reasons for this loss requires greater understanding of their *** of the pinnae and tympanic bullae varies markedly among *** hearing is important for both predator avoidance and prey location,the variability in ear morphology could reflect specialization and adaptation to specific environments,and therefore be of conservation *** measured 798 museum specimens representing 29 species of *** for phylogenetic relatedness and head length,pinna surface area was weakly negatively correlated with average precipitation(rainfall being our surrogate measure of vegetation productivity/complexity),and there were no environmental correlates with effective diameter(pinna width).Controlling for phylogenetic relatedness and skull length,tympanic bulla volume was negatively correlated with *** that inhabited drier habitats,which would be open and allow sound to carry further with less obstruction,had relatively larger pinnae and tympanic *** contrast,species from higher rainfall habitats,where sounds would be attenuated and diffused by dense vegetation,had the smallest pinnae and bullae,suggesting that low-frequency hearing is not as important in these *** with temperature did not reach statistical *** findings highlight linkages between hearing traits and habitat that can inform conservation and management strategies for threatened species.

关键词： external ear hearing ecology marsupial middle ear sound perception

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Living on the edge： Effects of body size, group density and microhabitat selection on escape behaviour of southern leopard frogs Lithobates sphenocephalus

引用

Current Zoology 2014年第6期60卷 712-718页

作者： Philip W. BATEMAN patricia A. fleming Department of Environment and Agriculture Curtin University Perth Bentley WA 6845 Australial School of Veterinary and Life Sciences Murdoch University Perth Murdoch WA 6150 Australia

Models of optimal escape strategy predict that animals should move away when the costs of fleeing （metabolic and opportunity costs） are outweighed by the costs of remaining. These theoretical models predict that more vulnerable individuals should be more reactive, moving away when an approaching threat is further away. We tested whether escape behaviour （includ- ing ＇escape calling＇） ofLithobates sphenocephalus approached by a human was influenced by body size or the initial microhabi- tat that the individual was found in. Irrespective of their size, frogs in the open tended to remain immobile, enhancing their cryp- sis. Frogs in cover showed different responses according to their body size, but, contrary to our initial predictions, larger frogs showed greater responsiveness （longer flight initiation distance and distances fled） than small frogs. Small frogs tended to remain closer to water and escaped into water, while larger individuals were more likely to jump to terrestrial cover and call during escape. Density of frogs near the focal animal had no effect on escape behaviour. This study indicates a range of escape responses in this species and points to the importance of divergent escape choices for organisms which live on the edge of different environments .

关键词： Alarm call Flight initiation distance (FID) Distance fled Microhabitat selection Rana sphenocephala

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Does urbanization influence the diet of a large snake？

引用

Current Zoology 2018年第3期64卷 311-318页

作者： Ashleigh K. WOLFE Philip W. BATEMAN patricia A. fleming Department of Environment and Agriculture Curtin University Perth Bentley WA 6102 Australia School of Veterinary and Life Sciences Murdoch University Perth Murdoch WA 6150 Australia

Urbanization facilitates synanthropic species such as rodents, which benefit the diets of many predators in cities. We investigated how urbanization affects the feeding ecology of dugites Pseudonaja affi- nis, a common elapid snake in south-west Western Australia. We predicted that urban snakes： 1） more frequently contain prey and eat larger meals, 2） eat proportionally more non-native prey, 3） eat a lower diversity of prey species, and 4） are relatively heavier, than non-urban dugites. We analyzed the diet of 453 specimens obtained from the Western Australian Museum and opportunistic road-kill collections. Correcting for size, sex, season, and temporal biases, we tested whether location influenced diet for our 4 predictions. Body size was a strong predictor of diet （larger snakes had larger prey present, a greater number of prey items, and a greater diversity of prey）. We identified potential collection biases： urban dugites were relatively smaller （snout-vent length） than non-urban specimens, and females were relatively lighter than males. Accounting for these effects, urban snakes were less likely to have prey present in their stomachs and were relatively lighter than non-urban snakes. Other urban-adapted carnivores appear to benefit from urbanization through increased food supplementation, but we found the opposite of this： urban dugites were less likely to contain a meal, and their meals were smaller, indicating they did not make greater use of synanthropic species than was evident for non-urban snakes. In contrast to other carnivores, snakes do not appear to fit a consistent directional pattern for size differences between urban and non-urban populations.

关键词： adaptation dissection feeding ecology reptile.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CIMAvax^(█)EGF vaccine therapy for non-small cell lung cancer:A weighted log-rank tests-based evaluation

引用

Modern Chemotherapy 2013年第3期2卷 51-56页

作者： Carmen Viada Gonzalez Jean-Francois Dupuy Martha Fors López patricia Lorenzo Luaces Gisela González Marinello Elia Neninger Vinagera Beatriz García Verdecia Tania Crombet-Ramos Clinical Trials Department Center of Molecular ImmunologyHavanaCuba National Institute of Applied Sciences of Rennes RennesFrance National Coordinator Center of Clinical Trial HavanaCuba Hermanos Ameijeiras Hospital HavanaCuba

Time-to-event has become one of the primary endpoints of many clinical trials. Comparing treatments and therapies using time-to-event (or “survival”) data requires some care, since survival differences may occur either early or late in the follow-up period, depending on various factors such as the initial potency or the duration of efficacy of the drugs. In this work, we investigate the effect of the CIMAvax?EGF vaccine therapy on the survival of patients with non-small cell lung cancer, using stratified and unstratified weighted log-rank tests. Weighted log-rank tests are designed to identify early and late survival differences between treatments. Using these tests, we conclude that the vaccine is more efficient than the standard therapy among patients less than 60 years of age.

关键词： Log-Rank Test fleming-Harrington Test Stratified Tests

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：