| the advertisement call of ameerega pulchripecta (silverstone, 1976)(anura, dendrobatidae). | the name ameerega picta was once used to denote a lineage of poison frogs (dendrobatidae) distributed throughout most of the amazon basin (silverstone 1976); more recently, to describe a phenetic group involving at least 18 species, lötters et al. (2007) pointed out that some of the lineages were indeed derived from the former a. picta. among them, the nominal species with the widest distribution is a. hahneli (haddad & martins 1994; twomey & brown 2008), also an alleged complex of poorly define ... | 2016 | 27395723 |
| systematics of the ameerega rubriventris complex (anura: dendrobatidae) with descriptions of two new cryptic species from the east-andean versant of peru. | we describe two new species of poison frog from central and southern peru that have been referred to as ameerega picta, a. hahneli, or a. altamazonica throughout the past thirty years. our phylogenies generated with genomic data provide strong support that the two new species are successive sisters to two described taxa, a. rubriventris and a. altamazonica, and collectively comprise the ameerega rubriventris complex. the first new taxon, ameerega panguana sp. nov., can be distinguished from all ... | 2019 | 32230685 |
| [frogs in the adolpho lutz collection at the oswaldo cruz institute. viii. dendrobates pictus flavopictus lutz 1925]. | | 1952 | 13012850 |
| skin glands, poison and mimicry in dendrobatid and leptodactylid amphibians. | in amphibians, secretions of toxins from specialized skin poison glands play a central role in defense against predators. the production of toxic secretions is often associated with conspicuous color patterns that warn potential predators, as it is the case of many dendrobatid frogs, including ameerega picta. this species resembles the presumably nontoxic leptodactylus lineatus. this study tests for mimicry by studying the morphology and distribution of skin glands, components of skin secretion, ... | 2012 | 22025347 |
| chromosome analysis of five brazilian species of poison frogs (anura: dendrobatidae). | dendrobatid frogs have undergone an extensive systematic reorganization based on recent molecular findings. the present work describes karyotypes of the brazilian species adelphobates castaneoticus, a. quinquevittatus, ameerega picta, a. galactonotus and dendrobates tinctorius which were compared to each other and with previously described related species. all karyotypes consisted of 2n = 18 chromosomes, except for a. picta which had 2n = 24. the karyotypes of the adelphobates and d. tinctorius ... | 2011 | 21677386 |
| n-methyldecahydroquinolines: an unexpected class of alkaloids from amazonian poison frogs (dendrobatidae). | the dominant alkaloids previously identified in skin extracts of amazonian dendrobatid frogs of the genus ameerega are histrionicotoxins and 2,5-disubstituted decahydroquinolines. analysis of alkaloids in skin extracts of ameerega picta from bolivia revealed that the alkaloid 257a, previously reported as a 2,5-disubstituted decahydroquinoline, is an n-methyl-2,5-disubstituted decahydroquinoline. we characterized alkaloids of another 12 of the more than 25 species recently assigned to the genus a ... | 2009 | 19432407 |