Movement and Spatial Dispersion of Sistrurus catenatus and Heterodon platirhinos: Implications for Interactions with Roads

Rouse, Jeremy D.; Willson, Robert J.; Black, Robert A.; Brooks, Ronald J.

doi:10.1643/ce-09-036

Cited by 23 publications

(17 citation statements)

References 22 publications

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“…Similarly, Rouse et al . () found that radio‐tracked massasaugas never crossed an old highway south of Parry Sound, but readily crossed a newly constructed highway in the same region. This implies that massasaugas develop avoidance behaviour in response to roads over substantial time.…”

Section: Discussionmentioning

confidence: 99%

“…Multiyear radio telemetry studies were previously conducted in both of our study regions, and we used these to define our landscape genetic models (Harvey & Weatherhead ; Rouse et al . ). Telemetry data showed that massasaugas are habitat generalists at the macrohabitat scale, using open habitat, wetlands and sparse forest in proportion to their availability, but tend to avoid dense forest during the active season (Harvey & Weatherhead ).…”

Section: Methodsmentioning

confidence: 97%

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The influence of landscape on gene flow in the eastern massasauga rattlesnake (Sistrurus c. catenatus): insight from computer simulations

et al. 2013

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Understanding how gene flow shapes contemporary population structure requires the explicit consideration of landscape composition and configuration. New landscape genetic approaches allow us to link such heterogeneity to gene flow within and among populations. However, the attribution of cause is difficult when landscape features are spatially correlated, or when genetic patterns reflect past events. We use spatial Bayesian clustering and landscape resistance analysis to identify the landscape features that influence gene flow across two regional populations of the eastern massasauga rattlesnake, Sistrurus c. catenatus. Based on spatially explicit simulations, we inferred how habitat distribution modulates gene flow and attempted to disentangle the effects of spatially confounded landscape features. We found genetic clustering across one regional landscape but not the other, and also local differences in the effect of landscape on gene flow. Beyond the effects of isolation-by-distance, water bodies appear to underlie genetic differentiation among individuals in one regional population. Significant effects of roads were additionally detected locally, but these effects are possibly confounded with the signal of water bodies. In contrast, we found no signal of isolation-by-distance or landscape effects on genetic structure in the other regional population. Our simulations imply that these local differences have arisen as a result of differences in population density or tendencies for juvenile rather than adult dispersal. Importantly, our simulations also demonstrate that the ability to detect the consequences of contemporary anthropogenic landscape features (e.g. roads) on gene flow may be compromised when long-standing natural features (e.g. water bodies) co-exist on the landscape.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 97%

The influence of landscape on gene flow in the eastern massasauga rattlesnake (Sistrurus c. catenatus): insight from computer simulations

et al. 2013

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“…Relative to other snake species in the same range, eastern hog-nosed snakes are relatively mobile. They are active foragers showing sustained and unpredictable movement during the active season (Rouse et al 2011), with average home range sizes sometimes exceeding 100 ha (Cunnington 2004) implying the potential for extensive gene flow within regional populations if dispersal is uninterrupted. However, the ongoing destruction and fragmentation of suitable habitat are major threats to the population persistence of eastern hog-nosed snakes in Ontario.…”

Section: Introductionmentioning

confidence: 99%

“…Previous research on H. platirhinos focused on spatial ecology and habitat use within single locales (e.g. Cunnington and Cebek 2005;Rouse et al 2011;Robson 2011). This is the first study to investigate patterns across the entire distribution of eastern hog-nosed snakes in Ontario and to incorporate genetic data to assess spatial structure.…”

Section: Introductionmentioning

confidence: 99%

Population genetic structure at the northern range limit of the threatened eastern hog-nosed snake (Heterodon platirhinos)

Xuereb

Rouse

Cunnington³

et al. 2015

Conserv Genet

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Habitat loss and fragmentation have important consequences for population persistence by reducing dispersal, connectivity, and population size. Characterizing patterns of population genetic structure and gene flow, and testing for the genetic signature of population declines and inbreeding can provide key insights into conservation for at-risk species. We use 12 microsatellite DNA markers to quantify the spatial structuring across two regional populations of the threatened eastern hog-nosed snake (Heterodon platirhinos) in Ontario, Canada. We further test for inbreeding and recent, rapid population declines, for the latter using both a 'heterozygosity excess' approach and Approximate Bayesian computation. Spatial Bayesian assignment tests revealed four distinct genetic clusters that were not apparent from species occurrence data, suggesting that the current designation of a single management unit for this species is invalid. We found some evidence for inbreeding in all studied locales. However, heterozygosity excess tests provided only weak evidence for recent bottlenecks and varied according to mutational model specified. In contrast, ABC provided strong support for a recent and rapid reduction in population size within one sample locale (Wasaga Beach), where individuals are largely confined to a small area circumscribed by expanding urban areas. For three other locales investigated, we found equal support for either recent rapid or gradual population declines. Immediate action is required for Wasaga Beach if this population is to persist.

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“…무선추적기법은 발신기와 수신기, 안테나를 이 용하여 개체에게 삽입된 발신기의 신호를 송신 받아 위치를 추적하는 방법이다 (Mader, 2005). 이러한 무선 추적기법은 실험 개체들을 다시 찾을 확률이 기존의 표식-재포획기법 보다 확실히 높기 때문에 최근에 와 서는 특히 뱀의 이동 및 분산에 대한 연구에서 보편 화되어 사용되고 있으며, 이에 따라 이전보다 더 가 볍고 작은 발신기가 개발되고 있다 (Mech, 1986;White and Garrot, 1990;Rouse et al, 2011). (Mattison, 1995).…”

Section: 서 론unclassified

Effect of weight of radio-transmitters on survival of Red-tongue viper snake (Gloydius ussuriensis) and Short-tailed viper snake (Gloydius saxatilis)in the radio-transmitter implantation

Do¹,

Choi²,

Yoo³

2014

Journal of Wetlands Research

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In order to study the home range of the red-tongue viper snake (Gloydis ussuriensis) and the short-tailed viper snake (Gloydius saxatilis) belonging to the viperidae of squamat in Korea, we implanted radio-transmitters which were weighed less than 5% of individual mass in them and traced their location by radio-tracking. Surgeries for transmitter insertion were performed on 5 red-tongue viper snakes and 6 short-tailed viper snakes (total 11 individuals) and the average ratio of transmitter mass to body mass were 4.2% and 2.2%, respectively. After radio-transmitter implantation, all short-tailed viper snakes survived but 4 out of 5 red-tongue viper snakes did not survive during the convalescence stage, showing only 20% of survival rate. The results suggest that the ratio of transmitter mass to body mass should be less than 3.6% at least in these species, although previous studies have recommended various ranges from 1% to 7% as the acceptable ratios.

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Movement and Spatial Dispersion of Sistrurus catenatus and Heterodon platirhinos: Implications for Interactions with Roads

Cited by 23 publications

References 22 publications

The influence of landscape on gene flow in the eastern massasauga rattlesnake (Sistrurus c. catenatus): insight from computer simulations

The influence of landscape on gene flow in the eastern massasauga rattlesnake (Sistrurus c. catenatus): insight from computer simulations

Population genetic structure at the northern range limit of the threatened eastern hog-nosed snake (Heterodon platirhinos)

Effect of weight of radio-transmitters on survival of Red-tongue viper snake (Gloydius ussuriensis) and Short-tailed viper snake (Gloydius saxatilis)in the radio-transmitter implantation

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