An arboreal poison frog (Dendrobates) from western Panama. American Museum novitates ; no. 2783

Simple item page
dc.contributor.authorMyers, Charles W.en_US
dc.contributor.authorDaly, John W.en_US
dc.contributor.authorMartínez, Víctor, herpetologist.en_US
dc.date.accessioned2005-10-06T18:12:13Z
dc.date.available2005-10-06T18:12:13Z
dc.date.issued1984en_US
dc.description20 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 20).en_US
dc.description.abstract"Dendrobates arboreus, new species, is a small arboreal frog with a dorsal and ventral pattern of vivid yellow spots on a brown or black field. It is abundant at 1100-1300 m. above sea level on a low section of the continental divide in western Panama, where, in undisturbed cloud forest, virtually the entire population resdies high aboveground on trees laden with bromeliads and other epiphytes. A few specimens also come from a locality in the adjacent Caribbean lowlands. The pale-spotted color pattern of Dendrobates arboreus is similar to that of the enigmatic D. maculatus, also from western Panama, but these two species differ significantly in morphology and are not closely related. Dendrobates arboreus is assigned to the histrionicus species group, which includes two species occurring macrosympatrically with arboreus, D. speciosus (highlands) and D. pumilio (lowlands). The monophyly of the histrionicus group is indicated by very similar-sounding chirp calls - given as long trains of harsh notes that differ among species in rate of note repetition, note duration, and dominant frequency. New spectrographic analysis of pulse rates compels a restatement of Myers and Daly's original distinction between chirp calls and buzz calls, two important classes of dendrobatid vocalization. Courtship and egg laying of Dendrobates arboreus, and cannibalism of eggs by an adult female, were observed in captivity. There is no amplexus during mating, although typical cephalic amplexus (primitive within the Dendrobatidae) is retained in the behavioral repertory, possibly in an aggressive context. Courtship includes tactile signals by both sexes prior to their assuming a vent-to-vent position for egg laying and fertilization. An instance of mate piracy was observed when a second male successfully intruded at a late stage of courtship, bypassing the preliminary tactile signaling of the original pair. Defensive skin secretions of Dendrobates arboreus contained 14 piperidine alkaloids, including members of the pumiliotoxin-A class and its allopumiliotoxin-A subclass. Remaining alkaloids, including two new compounds, are left unclassified. Histrionicotoxins were not detected"--P. [1]-2.en_US
dc.format.extent4827337 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5264
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2783en_US
dc.subject.lccQL1 .A436 no.2783, 1984en_US
dc.subject.lcshDendrobates arboreusen_US
dc.subject.lcshFrogs -- Panamaen_US
dc.subject.lcshAmphibians -- Panamaen_US
dc.subject.lcshPoisonous animals -- Panama.en_US
dc.subject.lcshToxins.en_US
dc.subject.lcshAlkaloids.en_US
dc.titleAn arboreal poison frog (Dendrobates) from western Panama. American Museum novitates ; no. 2783en_US
dc.title.alternativePoison frogen_US
dc.typetexten_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
/v2/dspace/ingest/pdfSource/nov/N2783.pdf
Size:
4.6 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

American Museum Novitates