Tamaño poblacional, uso del hábitat y relaciones interespecíficas de agalychnis spurrelli (anura: hylidae) en un bosque húmedo tropical remanente del noroccidente de Ecuador

Ortega‐Andrade, H. Mauricio; Tobar-suárez, Cecilia; Arellano, M. Mónica

doi:10.1590/s0031-10492011000100001

Cited by 11 publications

(12 citation statements)

References 27 publications

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“…This breeding behavior is similar to that report by Scott and Starrett (1974) in Costa Rica and Ortega-Andrade et al (2011) in Ecuador. Based on the reproductive pattern observed on BCI, we support the assumption that this species is an opportunistic explosive breeder, as previously suggested for populations in Costa Rica and Ecuador (Gray, 1997;Ortega-Andrade et al, 2011). These variations among populations suggest that the reproductive pattern displayed by A. spurrelli might be influenced by ecological factors present at the breeding sites (Scott and Starret, 1974).…”

Section: Speciessupporting

confidence: 88%

“…A possible explanation is that males use this call to evaluate other males before engaging in escalated combats (see below). Among phyllomedusine, it is common for males in amplexus to emit aggressive calls when solitary males attempt to displace amplecting pairs (Martins et al, 1998;Abrunhosa and Wogel, 2004;Wogel et al, 2005;Venâncio and Melo-Sampaio, 2010;Oliveira et al, 2012;Dias et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Most species of Agalychnis Cope, 1864 are prolonged breeders (A. annae, A. callidryas, A. dacnicolor, A. granulosa, A. lemur, A. moreletii: Duellman, 1970;Pyburn, 1970;Gomez-Mestre et al, 2008;Vilela et al, 2015), with the exception of A. saltator and A. spurrelli, which show explosive breeding with an unusual aggregation behavior (Scott and Starret, 1974;Roberts, 1994;Ortega-Andrade et al, 2011). Nonetheless, different breeding patterns have been reported among populations of A. spurrelli (Vargas et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…The description of Scott and Starret (1974) is limited to the call rate and provides no further details about any other acoustic parameter, leaving the functions and specific context of this call unknown. Most of the calling pattern of A. spurrelli is based on observations of few individuals (Duellman, 1970;Ortega-Andrade, 2008). Therefore, information about the calling behavior in this species is relatively limited.…”

Section: Introductionmentioning

confidence: 99%

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Acoustic Repertoire and Calling Behavior of the Gliding Treefrog, Agalychnis spurrelli (Anura: Hylidae)

Cossio

Medina-Barcenas

2020

South American Journal of Herpetology

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Section: Speciessupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acoustic Repertoire and Calling Behavior of the Gliding Treefrog, Agalychnis spurrelli (Anura: Hylidae)

Cossio

Medina-Barcenas

2020

South American Journal of Herpetology

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“…Working on unexplored areas produces frequently new species descriptions [65] – [69] , expansions of known species’ distribution ranges [70] – [73] and records of unidentified specimens on biological inventories [69] , [74] . Thus, the application of technology for modeling ecological niches and predicting geographic distributions is extremely useful in defining core areas of species diversity, foci of undiscovered species and developing conservation strategies [24] , [75] – [77] .…”

Section: Discussionmentioning

confidence: 99%

Novel Data on the Ecology of Cochranella mache (Anura: Centrolenidae) and the Importance of Protected Areas for This Critically Endangered Glassfrog in the Neotropics

2013

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We studied a population of the endangered glassfrog, Cochranella mache, at Bilsa Biological Station, northwestern Ecuador, from 2008 and 2009. We present information on annual abundance patterns, behavioral ecology, habitat use and a species distribution model performed with MaxEnt. We evaluate the importance of the National System of Protected Areas (SNAP) in Colombia and Ecuador, under scenarios of climate change and habitat loss. We predicted a restricted environmental suitability area from 48,509 Km2 to 65,147 Km2 along western Ecuador and adjacent Colombia; ∼8% of the potential distribution occurs within SNAP. We examined four aspects of C. mache ecology: (1) ecological data suggests a strong correlation between relative abundance and rainfall, with a high probability to observe frogs through rainy months (February–May); (2) habitat use and the species distribution model suggest that this canopy dweller is restricted to small streams and rivulets in primary and old secondary forest in evergreen lowland and piedmont forest of western Ecuador, with predictions of suitability areas in adjacent southern Colombia; (3) the SNAP of Colombia and Ecuador harbor a minimum portion of the predicted model of distribution (<10%); and (4) synergetic effects of habitat loss and climate change reduces in about 95% the suitability areas for this endangered frog along its distributional range in Protected Areas. The resulting model allows the recognition of areas to undertake conservation efforts and plan future field surveys, as well as forecasting regions with high probability of C. mache occurrence in western Ecuador and southern Colombia. Further research is required to assess population tendencies, habitat fragmentation and target survey zones to accelerate the discovery of unknown populations in unexplored areas with high probability of suitability. We recommend that Cochranella mache must be re-categorized as “Critically Endangered” species in national and global status, according with criteria and sub-criteria A4, B1ab(i,ii,iii,iv),E.

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Phenology and environmental determinants of explosive breeding in gliding treefrogs: diel timing of rainfall matters

Güell,

Warkentin

2023

Behavioral Ecology

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The influence of abiotic and biotic factors on the temporal pattern of calling and breeding for many temperate anurans is well understood. However, few studies have documented patterns of reproduction in explosive-breeding tropical frogs or incorporated multiple environmental factors in their analyses, especially across multiple breeding seasons. We combine long-term natural history observations and automated data collection methods with boosted regression tree (BRT) analysis to determine the phenology and determinants of explosive breeding in the gliding treefrog, Agalychnis spurrelli. We monitored breeding for a total of 418 days across three breeding seasons and determined the relative importance of several environmental factors on the probability of calling and breeding activity. Our study population of A. spurrelli on Costa Rica’s Osa Peninsula forms breeding aggregations up to 11 times per year during 1–2-day long explosive-breeding events, from late May to mid-September. Calling and breeding activity are strongly and positively related to accumulated rainfall during the previous 24 and 48–24 h before, particularly rainfall during the afternoon and evening. Day-of-year, days since breeding occurred, and lunar phase also influence reproductive activity. This study provides the first description and analysis of the phenology and factors that predict explosive breeding in A. spurrelli and illustrates the value of using automated data collection paired with BRTs for the analysis of complex ecological data. La influencia de factores abióticos y bióticos en el patrón temporal de cantos y reproducción de muchos anuros de zonas templadas es bien conocida. Sin embargo, pocos estudios han documentado patrones de reproducción en ranas tropicales, que se reproducen de manera explosiva, o han incorporado múltiples factores ambientales en sus análisis, especialmente a lo largo de múltiples temporadas de reproducción. Combinamos observaciones de historia natural a largo plazo y métodos automatizados de recolectar datos con análisis de árboles de regresión y técnicas de remuestreo (‘boosted regression trees’, BRT) para determinar la fenología y los determinantes de la reproducción explosiva en la rana planeadora, Agalychnis spurrelli. Monitoreamos la reproducción durante un total de 418 días a través de tres temporadas de reproducción y determinamos la importancia relativa de varios factores ambientales en la probabilidad de cantos y reproducción. Nuestra población de estudio de A. spurrelli en la Península de Osa en Costa Rica forma agregaciones reproductivas hasta 11 veces por año, los eventos de reproducción explosiva tienen 1 a 2 días de duración, desde finales de mayo hasta mediados de septiembre. Los cantos y la reproducción están fuerte y positivamente relacionados con la acumulación de lluvia en las 24 y 48 a 24 horas anteriores, particularmente durante la tarde y la noche. El día del año, los días desde la última reproducción, y la fase lunar también influyen la reproducción. Este estudio es la primera descripción y análisis de la fenología y los factores que predicen la reproducción explosiva en A. spurrelli e ilustra el valor de utilizar la recolección de datos automatizada junto con BRT para el análisis de datos ecológicos complejos.

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Tamaño poblacional, uso del hábitat y relaciones interespecíficas de agalychnis spurrelli (anura: hylidae) en un bosque húmedo tropical remanente del noroccidente de Ecuador

Abstract: Throughout 2006 and

Cited by 11 publications

References 27 publications

Acoustic Repertoire and Calling Behavior of the Gliding Treefrog, Agalychnis spurrelli (Anura: Hylidae)

Acoustic Repertoire and Calling Behavior of the Gliding Treefrog, Agalychnis spurrelli (Anura: Hylidae)

Novel Data on the Ecology of Cochranella mache (Anura: Centrolenidae) and the Importance of Protected Areas for This Critically Endangered Glassfrog in the Neotropics

Phenology and environmental determinants of explosive breeding in gliding treefrogs: diel timing of rainfall matters

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