Determination of Anuran Terrestrial Activity Patterns by a Drift Fence Method

Gibbons, J. Whitfield; Bennett, David

doi:10.2307/1443029

Cited by 67 publications

(31 citation statements)

References 13 publications

(12 reference statements)

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“…Breeding crawfish frog adults were captured along drift fences or in pitfall traps adjacent to drift fences (Gibbons and Bennett 1974) as they attempted to enter or exit two wetlands in southwestern Indiana. These wetlands (Nate's and Cattail ponds; 39u079N, 87u139W), described by Kinney et al (2011), are approximately 0.9 km apart and crawfish frog adults and juveniles move between them.…”

Section: Methodsmentioning

confidence: 99%

DROUGHT REDUCES CHYTRID FUNGUS (BATRACHOCHYTRIUM DENDROBATIDIS) INFECTION INTENSITY AND MORTALITY BUT NOT PREVALENCE IN ADULT CRAWFISH FROGS (LITHOBATES AREOLATUS)

Terrell

Engbrecht

Pessier

et al. 2014

Journal of Wildlife Diseases

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ABSTRACT:To fully understand the impacts of the chytrid fungus Batrachochytrium dendrobatidis (Bd) on amphibians it is necessary to examine the interactions between populations and their environment. Ecologic variables can exacerbate or ameliorate Bd prevalence and infection intensity, factors that are positively related when Bd is acting on naive amphibian populations as an epidemic disease. In crawfish frogs (Lithobates areolatus), a North American species with a complex life history, we have shown that Bd acts as an endemic disease with impacts that vary seasonally; the highest infection prevalences and intensities and highest frog mortality occurred during late spring in postbreeding individuals. In this study, conducted between 28 February and 23 August 2011 in southwestern Indiana on the same population, we report an uncoupling of the previously observed relationship between Bd prevalence and intensity following an extreme drought. Specifically, there was a postdrought reduction in Bd infection intensity and mortality, but not in infection prevalence. This result suggests that the relationship between prevalence and intensity observed in Bd epidemics can be uncoupled in populations harboring endemic infections. Further, constant prevalence rates suggest either that crawfish frogs are being exposed to Bd sources independent of ambient moisture or that low-level infections below detection thresholds persist from year to year. Drought has several ecologically beneficial effects for amphibians with complex life histories, including eliminating fish and invertebrate populations that feed on larvae. To these ecologic benefits we suggest another, that drought can reduce the incidence of the severe skin disease (chytridiomycosis) due to Bd infection.

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Section: Methodsmentioning

confidence: 99%

DROUGHT REDUCES CHYTRID FUNGUS (BATRACHOCHYTRIUM DENDROBATIDIS) INFECTION INTENSITY AND MORTALITY BUT NOT PREVALENCE IN ADULT CRAWFISH FROGS (LITHOBATES AREOLATUS)

Terrell

Engbrecht

Pessier

et al. 2014

Journal of Wildlife Diseases

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“…Embora freqüentemente utilizadas em ambientes temperados (GIBBONS & BENNETT 1974;CAMPBELL & CHRISTMAN 1982;VOGT & HINE 1982), armadilhas de queda foram pouco utilizadas para amostrar anflbios e répteis no Brasil, e sua etic iência nunca foi relatada em detalhes. Neste trabalho, apresenta-se os resultados obtidos com o uso destas armadilhas em estudos realizados no Rio Grande do Sul, em São Paulo e no Amazonas, comparando-os aos resultados de estudos ainda inéditos, realizados em outras regiões brasileiras.…”

unclassified

Eficiência de armadilhas de queda (pitfall traps) em amostragens de anfíbios e répteis no Brasil

2000

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ABSTRACT. Effectiveness of pitfall traps for sampling amphibians and reptiles in Brazil. The etfectiveness 01' pittàll traps associated with drift fences to capture amphibians and reptiles in three field studies, in Rio Grande do Sul (extreme southern Brazil), São Paulo (São Paulo, southeastern Brazil), and Amazonas (Amazonas, northern Brazil) is described. At Santa Maria, a total of 2040 amphibians and reptiles were caught in 30 pitfalls (200 L, with drift fence) during 18 months ofstudy (capture efficiencies of 3.78 amphibians and reptiles/pitfall /month and 0.14 snake/pittà ll/month). At Itirapina, São Paulo , 1262 amphibians and reptiles were obtained in 72 pittà ll s (100 L, with drift fence) during six l110nths (capture efficiencies of I 1,9 amphibians and reptiles/pitfall/month and 0,38 snake/pitfall/month). At Rio Pitinga, Amazonas, over 600 amphibians and reptiles were caught in 50 pittàlls (100-I 50 L, with drift fence) during three months (capture efticiencies ofca. 4.00 amphi bians and reptiles/pitfall/month and 0.87 snake/pittàll/month). Capture efficiencies of 1.25 to -3.92 amphibians and reptiles/pitfall/month were obtained in four other unpublished studies made by other authors in Brazi l, ali ofthem using 20-35 L traps, either with or without drift fences. Higher capture efficiencies for snakes were obtained in those studies in which larger containers (100-200 L) were used. The resuJts presented here indicate that pitfall traps are extremely useful to sall1 ple all1phibians and reptiles in Brazil, especially anurans and lizards. From these results, it is possible to preview the capture of 125 to 1200 all1phibians and reptiles with 100 pitfàlls during one 1l10nth, regardless ofthe size ofthe pitlàlls and sall1pling design ofthe trap arrays. The main advantages and disadvantages ofthc method and detai led guide lines on how to design, install , and use the traps is disc ussed.

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“…Cette méthode a été utilisée avec succès par plusieurs chercheurs pour la capture d'amphibiens dont Hurlbert 1960 ;Shoop 1965 ;Gibbons et Bennett 1974 ;Gibbons et Semlitsch 1981 ;Semlitsch 1981Semlitsch , 1985Phillips et Sexton 1989 ;Sexton etal. 1990.…”

Section: Dispositif De Captureunclassified

Dynamique migratoire de la Salamandre à deux lignes (Eurycea bislineata) et inventaire de la faune amphibienne de la vallée de la rivière Éternité /

Crépin¹

2001

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Determination of Anuran Terrestrial Activity Patterns by a Drift Fence Method

Cited by 67 publications

References 13 publications

DROUGHT REDUCES CHYTRID FUNGUS (BATRACHOCHYTRIUM DENDROBATIDIS) INFECTION INTENSITY AND MORTALITY BUT NOT PREVALENCE IN ADULT CRAWFISH FROGS (LITHOBATES AREOLATUS)

DROUGHT REDUCES CHYTRID FUNGUS (BATRACHOCHYTRIUM DENDROBATIDIS) INFECTION INTENSITY AND MORTALITY BUT NOT PREVALENCE IN ADULT CRAWFISH FROGS (LITHOBATES AREOLATUS)

Eficiência de armadilhas de queda (pitfall traps) em amostragens de anfíbios e répteis no Brasil

Dynamique migratoire de la Salamandre à deux lignes (Eurycea bislineata) et inventaire de la faune amphibienne de la vallée de la rivière Éternité /

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