Behavior in a Changing Landscape: Using Movement Ecology to Inform the Conservation of Pond-Breeding Amphibians

Joly, Pierre

doi:10.3389/fevo.2019.00155

Cited by 45 publications

(36 citation statements)

References 225 publications

(266 reference statements)

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“…The movement extent observed for A. femoralis females was far below the reported measures for invasive or migratory species (e.g., annual range expansion of up to 55 km for Rhinella marina (Phillips et al, 2007), migration distances of up to 15 km for Rana lessonae (Tunner & Karpati, 1997) and up to 4 km for Epidalea calamita (Sinsch et al, 2012)). Likewise, female average home ranges (MCP: 107 m 2 ) were smaller than reported for migratory anurans (e.g., between 100 and 1,000 m 2 e.g., in Rana sylvatica (Rittenhouse & Semlitsch, 2007) and Lithobates pipiens (Swanson et al, 2018) and up to 1,900 m 2 in Bufo bufo (Sinsch, 1987); for reviews see Pittman, Osbourn & Semlitsch, 2014;Brown, Morales & Summers, 2010;Joly, 2019) .…”

Section: Discussionmentioning

confidence: 93%

Reproductive behavior drives female space use in a sedentary Neotropical frog

Fischer

Ringler

et al. 2020

PeerJ

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Longer-range movements of anuran amphibians such as mass migrations and habitat invasion have received a lot of attention, but fine-scale spatial behavior remains largely understudied. This gap is especially striking for species that show long-term site fidelity and display their whole behavioral repertoire in a small area. Studying fine-scale movement with conventional capture-mark-recapture techniques is difficult in inconspicuous amphibians: individuals are hard to find, repeated captures might affect their behavior and the number of data points is too low to allow a detailed interpretation of individual space use and time budgeting. In this study, we overcame these limitations by equipping females of the Brilliant-Thighed Poison Frog (Allobates femoralis) with a tag allowing frequent monitoring of their location and behavior. Neotropical poison frogs are well known for their complex behavior and diverse reproductive and parental care strategies. Although the ecology and behavior of the polygamous leaf-litter frog Allobates femoralis is well studied, little is known about the fine-scale space use of the non-territorial females who do not engage in acoustic and visual displays. We tracked 17 females for 6 to 17 days using a harmonic direction finder to provide the first precise analysis of female space use in this species. Females moved on average 1 m per hour and the fastest movement, over 20 m per hour, was related to a subsequent mating event. Traveled distances and activity patterns on days of courtship and mating differed considerably from days without reproduction. Frogs moved more on days with lower temperature and more precipitation, but mating seemed to be the main trigger for female movement. We observed 21 courtships of 12 tagged females. For seven females, we observed two consecutive mating events. Estimated home ranges after 14 days varied considerably between individuals and courtship and mating associated space use made up for ∼30% of the home range. Allobates femoralis females spent large parts of their time in one to three small centers of use. Females did not adjust their time or space use to the density of males in their surroundings and did not show wide-ranging exploratory behavior. Our study demonstrates how tracking combined with detailed behavioral observations can reveal the patterns and drivers of fine-scale spatial behavior in sedentary species.

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Section: Discussionmentioning

confidence: 93%

Reproductive behavior drives female space use in a sedentary Neotropical frog

Fischer

Ringler

et al. 2020

PeerJ

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“…This accumulation of knowledge encouraged us to undertake a general synthesis on the topic, with the following goals: redefine and clarify the concept of amphibian dispersal; review current knowledge about the effects of individual (i.e., condition-dependent dispersal) and environmental (i.e., context-dependent dispersal) factors during the three stages of dispersal (i.e., emigration, immigration, and transience); identify the demographic and genetic consequences of dispersal in spatially structured amphibian populations; and identify productive research avenues to extend our understanding of amphibian dispersal. We do not discuss the importance of dispersal for the conservation of amphibians because two recent reviews have already covered this topic (Bailey and Muths 2019;Joly 2019).…”

Section: Introductionmentioning

confidence: 99%

Determinants and Consequences of Dispersal in Vertebrates with Complex Life Cycles: A Review of Pond-Breeding Amphibians

Cayuela¹,

Valenzuela‐Sánchez²,

Teulier³

et al. 2020

The Quarterly Review of Biology

103

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Dispersal is a central process in ecology and evolution. It strongly influences the dynamics of spatially structured populations and affects evolutionary processes by shaping patterns of gene flow. For these reasons, dispersal has received considerable attention from ecologists, evolutionary biologists, and conservationists. Although it has been studied extensively in taxa such as birds and mammals, much less is known about 2 dispersal in vertebrates with complex life cycles such as pond-breeding amphibians. Over the past two decades, researchers have taken an ever-increasing interest in amphibian dispersal and initiated both basic and applied studies, using a broad range of experimental and observational approaches. This body of research reveals complex dispersal patterns, causations, and syndromes, with dramatic consequences for the demography and genetics of amphibian populations. In this review, our goals are to: redefine and clarify the concept of amphibian dispersal; review current knowledge about the effects of individual (i.e., condition-dependent dispersal) and environmental (i.e., context-dependent dispersal) factors during the three stages of dispersal (i.e., emigration, transience, and immigration); identify the demographic and genetic consequences of dispersal in spatially structured amphibian populations; and propose new research avenues to extend our understanding of amphibian dispersal.

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“…Variable juvenile dispersal orientation is a common trait in amphibians (Malmgren, 2002;Jenkins et al, 2006;Patrick et al, 2007;De Lisle and Grayson, 2011). Dispersal orientation may be an inherited trait that increases juvenile likelihood of dispersing to higher quality areas with minimal exploration (Joly, 2019). If inherited in A. jeffersonianum or A. laterale -jeffersonianum, variation in juvenile orientation could arise from yearly differences in the composition of the adult breeding cohort as individuals skip breeding in some years (Williams, 1973;De Lisle and Grayson, 2011).…”

Section: Discussionmentioning

confidence: 99%

Post-emergence survival and dispersal of juvenile Jefferson salamander (Ambystoma jeffersonianum) and their unisexual dependents

Drunen

Linton²,

Bogart

et al. 2020

Amphib.-Reptilia

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Understanding population demography and dispersal of species at risk is integral for evaluating population viability, identifying causes of decline, and assessing the effectiveness of recovery actions. In pond-breeding amphibians, juvenile survival and dispersal are key components linked to population and metapopulation stability but little is known about this life stage. We use mark-recapture methods to estimate juvenile daily apparent survival, dispersal distance, and initial dispersal orientation during summer and fall dispersal of endangered Ambystoma jeffersonianum and their unisexual dependents (Ambystoma laterale – jeffersonianum). Over four years (2015-2018), 1018 juveniles (612 bisexual, 406 unisexual) were marked and 192 (19%) were recaptured at least once. Total captures varied widely between years, with the highest number of captures (88% of all individuals) occurring in 2017. Cormack-Jolly-Seber estimates of daily apparent survival were low in all years (0.76-0.95) but was higher for unisexuals than bisexuals. The majority of juveniles (71%) did not disperse further than 10-40 m after which movement appeared to cease. While most juveniles remained close to their natal pond, at least 2% of juveniles in 2017 travelled further than 100 m. Dispersal orientation varied by year and there was no difference in either dispersal orientation or distance between bisexual and unisexual individuals. This work is the first to estimate and compare juvenile survival and dispersal of sympatric A. jeffersonianum and A. laterale – jeffersonianum individuals, the results of which help inform population viability assessment and increase our understanding of juvenile dispersal dynamics and habitat use.

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Behavior in a Changing Landscape: Using Movement Ecology to Inform the Conservation of Pond-Breeding Amphibians

Cited by 45 publications

References 225 publications

Reproductive behavior drives female space use in a sedentary Neotropical frog

Reproductive behavior drives female space use in a sedentary Neotropical frog

Determinants and Consequences of Dispersal in Vertebrates with Complex Life Cycles: A Review of Pond-Breeding Amphibians

Post-emergence survival and dispersal of juvenile Jefferson salamander (Ambystoma jeffersonianum) and their unisexual dependents

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