Adição à diversidade de dendrobatídeos da Venezuela: descrição de três novas espécies de Mannophryne (Anura: Dendrobatidae)

Barrio-Amorós, César L.; Santos, Juan Carlos; Molina, César

doi:10.11606/issn.2316-9079.v9i1p03-35

Cited by 3 publications

(1 citation statement)

References 16 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2007) [ 33 ] and this paper; 8, Barrio-Amoros et al . (2010a) [ 14 ]; 9, Barrio-Amoros et al . (2010b) [ 34 ]; 10, La Marca (2009) [ 35 ]; 11, Wells (1980) [ 17 ]; 12, Vargas Galarce and La Marca (2006) [ 36 ]; 13, Manzanilla et al .…”

Section: Resultsmentioning

confidence: 99%

Sexual dichromatism in the neotropical genus Mannophryne (Anura: Aromobatidae)

et al. 2020

View full text Add to dashboard Cite

Recent reviews on sexual dichromatism in frogs included Mannophryne trinitatis as the only example they could find of dynamic dichromatism (males turn black when calling) within the family Aromobatidae and found no example of ontogenetic dichromatism in this group. We demonstrate ontogenetic dichromatism in M. trinitatis by rearing post-metamorphic froglets to near maturity: the throats of all individuals started as grey coloured; at around seven weeks, the throat became pale yellow in some, and more strongly yellow as development proceeded; the throats of adults are grey in males and variably bright yellow in females, backed by a dark collar. We demonstrated the degree of throat colour variability by analysing a large sample of females. The red: green (R:G) ratio ranged from~1.1 to 1.4, reflecting variation from yellow to yellow/orange, and there was also variation in the tone and width of the dark collar, and in the extent to which the yellow colouration occurred posterior to the collar. Female M. trinitatis are known to be territorial in behaviour. We show a positive relationship between throat colour (R:G ratio) and escape performance, as a proxy for quality. Our field observations on Tobago's M. olmonae showed variability in female throat colour and confirmed that males in this species also turn black when calling. Our literature review of the 20 Mannophryne species so far named showed that all females have yellow throats with dark collars, and that male colour change to black when calling has been reported in eight species; in the remaining 12 species, descriptions of males calling are usually lacking so far. We predict that both dynamic and ontogenetic sexual dichromatism are universal in this genus and provide discussion of the ecological role of dichromatism in this genus of predominantly diurnal, non-toxic frogs, with strong paternal care of offspring.

show abstract

Section: Resultsmentioning

confidence: 99%

Sexual dichromatism in the neotropical genus Mannophryne (Anura: Aromobatidae)

et al. 2020

View full text Add to dashboard Cite

show abstract

A new frog of the genus Aromobates (Anura, Dendrobatidae) from Sierra de Perijá, Venezuela

Rojas-Runjaic¹,

Infante-Rivero

Barrio-Amorós

2011

Zootaxa

View full text Add to dashboard Cite

A new species of diurnal frog of the genus Aromobates is described from the Sierra de Perijá in the Andes of western Venezuela. The new species is the first dendrobatid reported from this mountain range, though many other congeners are known from the Cordillera de Mérida, also in the Venezuelan Andes. It can be readily distinguished from all congeners by the unique combination of the following characters: dorsal skin granulate, paired and protuberant dorsal digital scutes, finger I shorter than finger II, fringes absent on fingers I and IV, present and conspicuous on all toes, toe webbing basal, dorsolateral stripe present, oblique lateral stripe diffuse, ventrolateral stripe absent. With this new species the number of Aromobates species from Venezuela increases to 13.

show abstract