Applied Herpetology最新文献_第6页

Ontogenetic and fertilizer effects on stable isotopes in the green frog (Rana clamitans) 绿蛙(Rana clamitans)体内稳定同位素的个体发育和肥料效应

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408784648808

Dale M. Jefferson, R. W. Russell

引用次数: 12

Optimising the design of artificial refuges for the Australian skink, Egernia stokesii 优化澳大利亚石龙子、埃及石龙子的人工避难所设计

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408784648826

E. Arida, Michael C. Bull

引用次数: 18

A brief overview of forensic herpetology 法医爬虫学的简要概述

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408786532048

B. W. Baker

引用次数: 4

Prevalence of the amphibian pathogen Batrachochytrium dendrobatidis in stream and wetland amphibians in Maryland, USA 美国马里兰州河流和湿地两栖动物中水蛭壶菌的流行病学

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408785911020

E. Grant, L. Bailey, J. Ware, K. Duncan

引用次数: 17

Methods in herpetological forensic work — post-mortem techniques 爬行动物法医工作方法。死后技术

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408786532110

J. Cooper

引用次数: 9

Brown treesnake ( Boiga irregularis ) trappability: Attributes of the snake, environment and trap 褐树蛇(Boiga irregularis)可诱捕性:蛇的属性，环境和陷阱

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408783489239

Valerie L. Boyarski, J. Savidge, G. Rodda

{"title":"Brown treesnake ( Boiga irregularis ) trappability: Attributes of the snake, environment and trap","authors":"Valerie L. Boyarski, J. Savidge, G. Rodda","doi":"10.1163/157075408783489239","DOIUrl":"https://doi.org/10.1163/157075408783489239","url":null,"abstract":"We examined three classes of factors that may influence brown treesnake (Boiga irregularis) trappability on Guam: (1) attributes of the snake, (2) attributes of the environment and (3) attributes of the trap. The attributes of the snake we considered included body condition, length and sex. Heavier snakes for a given size (better body condition) moved less and were less easily trapped. Longer snakes were easier to trap. Males were also slightly more easily trapped than females. We compared brown treesnake trappability between two study sites that differed greatly in the abundance of diurnal skinks, an important prey item for smaller snakes. We predicted that snakes, especially small individuals (<800 mm snout-vent length), would be more easily trapped in the low prey environment, a result that received only weak support from our data. However, small snakes were rarely trapped under any circumstance. We also predicted that diurnal foraging would be observed in the site with a higher density of diurnal prey, but daytime snake captures were negligible at both sites. Two attributes of traps that we varied were attractant (mouse vs. skink) and entrance flaps (present vs. absent). Traps with mice as attractant registered 6-16 fold more snake captures. We found little influence of entrances on captures. These modulators of brown treesnake trappability may have analogues in a variety of species, especially species that undergo an ontogenetic shift in diet.","PeriodicalId":55499,"journal":{"name":"Applied Herpetology","volume":"5 1","pages":"47-61"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/157075408783489239","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64920347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Conservation management implications of substrate choice in recently metamorphosed American toads (Bufo americanus) 新近蜕变的美洲蟾蜍(Bufo americanus)基质选择的保护管理意义

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408783489158

Joshua J. Schulte, Geoffrey R. Smith

引用次数: 4

Effects of disturbance, position of observer, and moonlight on efficiency of anuran call surveys 干扰、观测者位置和月光对anuran呼叫调查效率的影响

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408785910995

J. R. Granda, Robert M. Pena, B. A. Pierce

{"title":"Effects of disturbance, position of observer, and moonlight on efficiency of anuran call surveys","authors":"J. R. Granda, Robert M. Pena, B. A. Pierce","doi":"10.1163/157075408785910995","DOIUrl":"https://doi.org/10.1163/157075408785910995","url":null,"abstract":"Anuran call surveys are being used widely to monitor amphibian populations and study amphibian declines. To help optimize call surveys, we studied several factors that potentially affect the efficiency of this method. We studied whether the approach of observers to the listening site potentially disturbs calling amphibians and whether disturbance is reduced after 5 min using 230 roadside call surveys along 23 routes. On each route, listening time for five of ten sites was 5 min; listening time for the other five surveys on a route was 10 min. We detected nine species in these surveys. We found no significant difference in the number of species heard in the first 5 min of a 10-min survey compared to the second 5 min, nor a significant difference in the number of species heard when comparing 5-min surveys and the second 5 min of 10-min surveys. These results suggest that there is no detectable disturbance upon approach, or if disturbance occurs it does not dissipate after 5 min. The effect of the observer's listening orientation on number of species heard was examined in 110 roadside call surveys along 11 routes. Changing orientation during the call survey did not increase the number of species heard. Significantly greater numbers of species were detected during surveys conducted under low moonlight.","PeriodicalId":55499,"journal":{"name":"Applied Herpetology","volume":"5 1","pages":"253-263"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/157075408785910995","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64921281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Macrohabitat models of occurrence for the threatened Cheat Mountain salamander, Plethodon nettingi 受威胁的欺骗山蝾螈(Plethodon nettingi)的大生境发生模式

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408785911057

Lester O. Dillard, K. R. Russell, W. Ford

{"title":"Macrohabitat models of occurrence for the threatened Cheat Mountain salamander, Plethodon nettingi","authors":"Lester O. Dillard, K. R. Russell, W. Ford","doi":"10.1163/157075408785911057","DOIUrl":"https://doi.org/10.1163/157075408785911057","url":null,"abstract":"The federally threatened Cheat Mountain salamander (Plethodon nettingi; hereafter CMS) is known to occur at approximately 70 small, scattered sites in the Allegheny Mountains of eastern West Virginia. We used a comparative modeling approach to explain the landscape-level distribution and habitat relationships of CMS in relation to a suite of biotic and abiotic habitat variables measured across the species' range. We collected data on 13 explanatory macrohabitat variables at CMS-occupied (n = 180) and random (n = 180) sites. We then examined CMS-macrohabitat relationships using a priori, logistic regression models with information-theoretic model selection, classification tree modeling, and discriminant function analysis. Among logistic regression models, a model containing the variables elevation, aspect, slope, and lithology received the strongest empirical support, although a model containing these variables and current vegetation type also received limited support. Variable selection within our classification tree and discriminant function modeling was consistent with logistic regression results. Common variables in all three approaches indicated that the probability of finding CMS across the species' range increased in areas at higher elevations and underlain by sandstone. Validation of models with empirical support using reserved data indicated that classification accuracy was ≥80% for all three analytical methods. Finally, we linked model outputs from all three methods to GIS coverage maps that predicted CMS occupancy within the study area. Our results indicate that geophysical and ecological characteristics measured at large spatial scales may be useful for quantifying salamander habitat relationships in forested landscapes, and more specifically increase the capacity of managers to locate and plan for the continued persistence and recovery of CMS.","PeriodicalId":55499,"journal":{"name":"Applied Herpetology","volume":"5 1","pages":"201-224"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/157075408785911057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64921610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

Effect of fire history and vegetation structure on herpetofauna in a South African grassland 火灾历史和植被结构对南非草原爬行动物的影响

Applied Herpetology Pub Date : 2008-01-01 DOI: 10.1163/157075408784648781

G. Masterson, B. Maritz, G. Alexander

{"title":"Effect of fire history and vegetation structure on herpetofauna in a South African grassland","authors":"G. Masterson, B. Maritz, G. Alexander","doi":"10.1163/157075408784648781","DOIUrl":"https://doi.org/10.1163/157075408784648781","url":null,"abstract":"Fire is a frequent feature of African grasslands and is commonly used in the management of conservation areas. We studied the herpetofaunal richness and composition of 10 sites to determine the effects of a 30-year fire management regime on the herpetofaunal assemblage in a reserve in South Africa. We trapped amphibians and reptiles during March and April 2004 at 10 sites with different fire histories. Sites of different post-fire ages were compared for differences in their species richness. We also measured the vegetation cover and vegetation height i.e. the vegetation structure at each of the sites surveyed. We found no significant effects of fire history on the species richness or composition of each site. Species composition at each site was better explained by post-fire age than by vegetation structure. There was a tight correlation between the vegetation cover of a site and its species richness, as well as a significant effect of vegetation structure on the similarity of the species found at each site. Vegetation structure appears to be the key factor affecting the structure of herpetofaunal assemblages in grasslands of South Africa, with fire and prescribed burning impacting on the assemblages via its effect on the vegetation.","PeriodicalId":55499,"journal":{"name":"Applied Herpetology","volume":"6 3 1","pages":"129-143"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/157075408784648781","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64920501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20