Inventário do polimorfismo cromático em populações de Dendrobates galactonotus (Anura: Dendrobatidae), um anuro venenoso endêmico do Brasil

Hoogmoed, Marinus Steven; Avila-Pires, Teresa C. S. Avila-Pires C. S.

doi:10.11606/issn.2316-9079.v11i2p95-115

Cited by 22 publications

(12 citation statements)

References 21 publications

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“…Similarly, the second most abundant species on the islands surveyed was Adelphobates galactonotus . According to Hoogmoed and Avila‐Pires (), A. galactonotus tadpoles develop in open Brazil nuts filled with rainwater. Brazil nut trees are common on the Tucurui islands (S. Neckel‐Oliveira, pers.…”

Section: Discussionmentioning

confidence: 99%

Amphibians on Amazonian Land‐Bridge Islands are Affected More by Area Than Isolation

et al. 2015

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River damming has created fragmented landscapes in parts of the Amazon basin. The resulting decrease in forest area could directly affect amphibian species if large areas of habitat are required to guarantee the presence of specific types of breeding sites. Here, we describe the anuran assemblages on islands created by damming of the Tocantins River twenty years ago in the eastern Amazon basin. We surveyed 10 undisturbed islands varying in size from 3 to 2140 ha and located at distances of up to 6.7 km from the margin of the reservoir. We identified 32 frog species, of which 15, 14, and 3 have aquatic, semiaquatic, and terrestrial development, respectively. The number of frog species increased significantly with island area but was not affected by island distance from the margin. Species with aquatic or semiaquatic development tended to be absent from the smaller islands, regardless of the degree of isolation from the mainland. These findings emphasize the need to preserve specific microhabitats on smaller land‐bridge islands to maintain amphibian diversity in reservoir environments.

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Section: Discussionmentioning

confidence: 99%

Amphibians on Amazonian Land‐Bridge Islands are Affected More by Area Than Isolation

et al. 2015

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“…As stated by the IUCN Red List for Threatened Species, D. tinctorius is in the category “Least Concern” (Gaucher & MacCulloch, 2010). According to this report, its major threat is illegal trading, as it is for various other dendrobatid species (Brown et al, 2011; Gorzula, 1996; Hoogmoed & Avila-Pirés, 2012; Nijman & Shepherd, 2010). In fact, because of its prominence in the pet trade, this and most species of poison frogs have long been listed in the Appendix II of CITES (CITES, 2017).…”

Section: Introductionmentioning

confidence: 99%

From habitat use to social behavior: natural history of a voiceless poison frog, Dendrobates tinctorius

Rojas

Pašukonis

2019

PeerJ

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Descriptive studies of natural history have always been a source of knowledge on which experimental work and scientific progress rely. Poison frogs are a well-studied group of small Neotropical frogs with diverse parental behaviors, distinct calls, and bright colors that warn predators about their toxicity; and a showcase of advances in fundamental biology through natural history observations. The dyeing poison frog, Dendrobates tinctorius, is emblematic of the Guianas region, widespread in the pet trade, and increasingly popular in research. This species shows several unusual behaviors, such as the lack of advertisement calls and the aggregation around tree-fall gaps, which remain poorly described and understood. Here, we summarize our observations from a natural population of D. tinctorius in French Guiana collected over various field trips between 2009 and 2017; our aim is to provide groundwork for future fundamental and applied research spanning parental care, animal dispersal, disease spread, habitat use in relation to color patterns, and intra-specific communication, to name a few. We report sex differences in habitat use and the striking invasion of tree-fall gaps; describe their courtship and aggressive behaviors; document egg development and tadpole transport; and discuss how the knowledge generated by this study could set the grounds for further research on the behavior, ecology, and conservation of this species.

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“…Poison frogs of the family Dendrobatidae are a well‐known group of organisms where examples of polymorphic and polytypic warning signals are widespread (e.g., Brusa, Bellati, Meuche, Mundy, & Pröhl, ; Hoogmoed & Avila‐Pires, ; Myers & Daly, , ; Noonan & Gaucher, ; Silverstone, ; Symula et al., ). Their brightly coloured skin has been shown to play a role in predation avoidance (Amézquita, Castro, Arias, González, & Esquivel, ; Hegna, Saporito, & Donnelly, ; Noonan & Comeault, ; Saporito et al., ), as well as in sexual selection (Maan & Cummings, ; Richards‐Zawacki & Cummings, ; Twomey, Vestergaard, & Summers, ; Yang, Richards‐Zawacki, Devar, & Dugas, ).…”

Section: Introductionmentioning

confidence: 99%

“…Poison frogs of the family Dendrobatidae are a well-known group of organisms where examples of polymorphic and polytypic warning signals are widespread (e.g., Brusa, Bellati, Meuche, Mundy, & Pröhl, 2013;Hoogmoed & Avila-Pires, 2012;Myers & Daly, 1976, 1983Noonan & Gaucher, 2006;Silverstone, 1975;Symula et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Different colour morphs of the poison frog Andinobates bombetes (Dendrobatidae) are similarly effective visual predator deterrents

2018

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Aposematism is the use of warning signals to advertise unpleasant or dangerous defences to potential predators. As the effectiveness of this strategy depends on predator learning, little variation is expected in aposematic warning signals, as similar signals facilitate predator learning. However, warning signals are frequently variable in aposematic species. Such variability could arise as a result of geographic variation in the interpretation that local predators give warning signals. We tested this divergent learning hypothesis in the polytypic poison frog Andinobates bombetes (Anura: Dendrobatidae), focusing on visual predators. Our study was conducted in two populations of this species located in the Western Andes of Colombia, where individuals at some localities exhibit red dorsolateral stripes, while those in others exhibit yellow dorsolateral stripes. We deployed paraffin models imitating both forms of A. bombetes in size and colouration, as well as dull‐coloured controls, at sites inhabited by either red‐striped or yellow‐striped frogs. Red and yellow models were attacked at similar rates at both sites, and brown models were attacked more frequently at one of the sites. These results suggest that red and yellow colourations function as similarly effective aposematic signals for primarily visual predators, regardless of the form previously experienced by these predators. Therefore, our results do not support the hypothesis of divergent predator learning as a driver of the polytypism present in this species. Finally, we discuss other mechanisms that may be involved in the evolution and maintenance of this polytypism.

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Inventário do polimorfismo cromático em populações de Dendrobates galactonotus (Anura: Dendrobatidae), um anuro venenoso endêmico do Brasil

Cited by 22 publications

References 21 publications

Amphibians on Amazonian Land‐Bridge Islands are Affected More by Area Than Isolation

Amphibians on Amazonian Land‐Bridge Islands are Affected More by Area Than Isolation

From habitat use to social behavior: natural history of a voiceless poison frog, Dendrobates tinctorius

Different colour morphs of the poison frog Andinobates bombetes (Dendrobatidae) are similarly effective visual predator deterrents

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