检索结果-南通市图书馆

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 aw.y w.en the costs of fleeing （metabolic and opportunity costs） are outw.ighed by the costs of remaining. These theoretical models predict that more vulnerable individuals should be more reactive, moving aw.y w.en an approaching threat is further aw.y. w. tested w.ether escape behaviour （includ- ing ＇escape calling＇） ofLithobates sphenocephalus approached by a human w.s influenced by body size or the initial microhabi- tat that the individual w.s found in. Irrespective of their size, frogs in the open tended to remain immobile, enhancing their cryp- sis. Frogs in cover show.d different responses according to their body size, but, contrary to our initial predictions, larger frogs show.d greater responsiveness （longer flight initiation distance and distances fled） than small frogs. Small frogs tended to remain closer to w.ter and escaped into w.ter, w.ile larger individuals w.re 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 w.ich 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. w.LFE 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, w.ich benefit the diets of many predators in cities. w. investigated how.urbanization affects the feeding ecology of dugites Pseudonaja affi- nis, a common elapid snake in south-w.st w.stern Australia. w. predicted that urban snakes： 1） more frequently contain prey and eat larger meals, 2） eat proportionally more non-native prey, 3） eat a low.r diversity of prey species, and 4） are relatively heavier, than non-urban dugites. w. analyzed the diet of 453 specimens obtained from the w.stern Australian Museum and opportunistic road-kill collections. Correcting for size, sex, season, and temporal biases, w. tested w.ether location influenced diet for our 4 predictions. Body size w.s a strong predictor of diet （larger snakes had larger prey present, a greater number of prey items, and a greater diversity of prey）. w. identified potential collection biases： urban dugites w.re relatively smaller （snout-vent length） than non-urban specimens, and females w.re relatively lighter than males. Accounting for these effects, urban snakes w.re less likely to have prey present in their stomachs and w.re relatively lighter than non-urban snakes. Other urban-adapted carnivores appear to benefit from urbanization through increased food supplementation, but w. found the opposite of this： urban dugites w.re less likely to contain a meal, and their meals w.re smaller, indicating they did not make greater use of synanthropic species than w.s evident for non-urban snakes. In contrast to other carnivores, snakes do not appear to fit a consistent directional pattern for size differences betw.en 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

Transcriptional Regulation of the Ambient Temperature Response by H2A.Z Nucleosomes and HSF1 Transcription Factors in Arabidopsis

引用

Molecular Plant 2017年第10期10卷 1258-1273页

作者： Sandra Cortijo Varodom Charoensaw.n Anna Brestovitsky Ruth Buning Charles Ravarani Daniela Rhodes John van Noort Katja E. Jaeger philip A. w.gge The Sainsbury Laboratory University of Cambridge 47 Bateman Street Cambridge CB2 1LR UK Department of Biochemistry Faculty of Science Mahidol University 272 Rama Vl Road Ratchathewi District Bangkok 10400 Thailand Integrative Computational BioScience (ICBS) Center Mahidor University 999 Phuttamonthon 4 Road Salaya Nakhon Pathom 73170 Thailand Biological and Soft Matter Physics Huygens-Kamerlingh Onnes Laboratory Leiden University Niels Bohrweg 2 2333 CA Leiden the Netherlands Medical Research Council Laboratory for Molecular Biology Francis Crick Avenue Cambridge CB2 0QH UK Institute of Structural Biology Nanyang Technical University 50 Nanyang Avenue Singapore 639798 Singapore

Temperature influences the distribution, range, and phenology of plants. The key transcriptional activators of heat shock response in eukaryotes, the heat shock factors （HSFs）, have undergone large-scale gene amplification in plants. w.ile HSFs are central in heat stress responses, their role in the response to ambient temperature changes is less w.ll understood. w. show.here that the w.rm ambient temperature transcriptome is dependent upon the HSFA1 clade ofArabidopsis HSFs, w.ich cause a rapid and dynamic eviction of H2A.Z nucleosomes at target genes. A transcriptional cascade results in the activation of multiple dow.stream stress-responsive transcription factors, triggering large-scale changes to the transcriptome in response to elevated temperature. H2A.Z nucleosomes are enriched at temperature-responsive genes at non-inducible temperature, and thus likely confer inducibility of gene expression and higher responsive dynamics. w. propose that the antagonistic effects of H2A.Z and HSF1 provide a mechanism to activate gene expression rapidly and precisely in response to temperature, w.ile preventing leaky transcription in the absence of an activation signal.

关键词： gene expression regulation plant temperature sensing and signaling transcriptomics nucleosome dynamics histone variant H2A.Z heat shock transcription factors

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

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

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：