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1.
Rev. peru. biol. (Impr.) ; 24(1)ene. 2017.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1508798

ABSTRACT

En Perú Andigena nigrirostris es considerado hipotético al no existir registros publicados. A la fecha han sido colectados diez especímenes, se han obtenido dos grabaciones de sonido y la fotografía de un individuo. Siendo este último, el único registro dentro de un área natural protegida en Perú, el Santuario Nacional Tabaconas Namballe. Los registros indican que esta especie se distribuye en los bosques montanos de la vertiente oriental, al norte de la depresión de Huancabamba, entre ~ 2200 a 2900 m de altitud.


In Peru Andigena nigrirostris is considered hypothetical due to the absence of published records. To date ten specimens have been collected and two sound records and a photograph of a free-flying individual have been obtained. The latter record was from a protected area in Peru, the Santuario Nacional Tabaconas Namballe. Records indicate that this species is distributed in the montane forests of the eastern slope, north of the Huancabamba depression, between ~ 2200 a 2900 m elevation.

2.
Pesqui. vet. bras ; 33(3): 399-404, Mar. 2013. ilus
Article in Portuguese | LILACS | ID: lil-674391

ABSTRACT

O tucano-de-bico-verde (Ramphastos dicolorus) é uma ave encontrada nas florestas tropicais americanas e pertence à Ordem Piciforme, Família Ramphastidae. Neste trabalho objetivou-se descrever a origem, a ramificação e a distribuição da artéria celíaca do tucano-de-bico-verde. Foram utilizados três espécimes provenientes do Criatório Científico e Cultural de Poços de Caldas, MG (IBAMA, 2.31.94-00006), doados após óbito por causas naturais. As aves tiveram a artéria isquiática direita canulada para injeção de solução de látex corado, e após fixação em solução de formol a 10% foram dissecadas. A artéria celíaca originou-se a partir da porção descendente da aorta, emitindo como primeiro ramo colateral a artéria pró-ventricular dorsal. Esta emitiu ramos esofágicos e continuou-se como artéria gástrica dorsal, de aspecto tortuoso, terminando em anastomose com a artéria gástrica direita. Após curto trajeto, a artéria celíaca formou dois ramos colaterais, o esquerdo e o direito. O ramo esquerdo logo se ramificou formando a artéria pró-ventricular ventral com seus ramos esofágicos, artéria gástrica esquerda, que originou a artéria hepática esquerda, e finalmente a artéria gastroduodenal, que emitiu as artérias gástricas ventrais e duodenais. O ramo direito da artéria celíaca emitiu as artérias lienais e hepática direita, continuando-se como artéria pancreático-duodenal. Esta formou a artéria pilórica dorsal, duas artérias gástricas direitas, vários ramos duodenais, pancreáticos e a artéria duodeno-jejunal. Assim, a artéria celíaca nos três espécimes de tucano-de-bico-verde, exibiu um arranjo que se assemelha tanto ao descrito em aves domésticas quanto ao de aves silvestres.


The green-billed toucan (Ramphastos dicolorus) is a bird found in American tropical forests and belongs to the Order Piciformes, Family Ramphastidae. The aim of this paper is to describe the origin, ramification and distribution of the celiac artery in the green-billed toucan. Three specimens from the Scientific and Cultural Breeding of Poços de Caldas, MG (IBAMA, 2.31.94-00006), donated after death by natural causes, were analyzed. The birds had the right ischiadic artery cannulated for injection of colored latex, and after fixation in 10% formalin solution were dissected. The celiac artery was originated from the descending portion of aorta, giving as the first collateral branch the pro-ventricular dorsal artery. This gave esophageal branches and continued as dorsal gastric artery, with tortuous appearance, ending in anastomosis with the right gastric artery. After a short track, the celiac artery formed two collateral branches, the right and the left. The left branch soon ramified itself to form the ventral pro-ventricular artery with its esophageal branches, left gastric artery, that gave rise to the left hepatic artery, and finally the gastroduodenal artery, which emitted the ventral gastric and duodenal arteries. The right branch of the celiac artery emitted the lienal and right hepatic arteries, continuing as pancreatic-duodenal artery. This gave the dorsal pyloric artery, two right gastric arteries, several duodenal, pancreatic branches and the duodenal-jejunal artery. Thus, the celiac artery in the three specimens of green-billed toucan showed an arrangement resembling that described both in domestic and wild birds.


Subject(s)
Animals , Birds/anatomy & histology , Celiac Artery , Cecum
3.
Genet. mol. biol ; 31(4): 964-973, Sept.-Dec. 2008. ilus, tab
Article in English | LILACS | ID: lil-501464

ABSTRACT

Most Neotropical birds, including Pteroglossus aracaris, do not have an adequate fossil record to be used as time constraints in molecular dating. Hence, the evolutionary timeframe of the avian biota can only be inferred using alternative time constraints. We applied a Bayesian relaxed clock approach to propose an alternative interpretation for the historical biogeography of Pteroglossus based on mitochondrial DNA sequences, using different combinations of outgroups and time constraints obtained from outgroup fossils, vicariant barriers and molecular time estimates. The results indicated that outgroup choice has little effect on the Bayesian posterior distribution of divergence times within Pteroglossus, that geological and molecular time constraints seem equally suitable to estimate the Bayesian posterior distribution of divergence times for Pteroglossus, and that the fossil record alone overestimates divergence times within the fossil-lacking ingroup. The Bayesian estimates of divergence times suggest that the radiation of Pteroglossus occurred from the Late Miocene to the Pliocene (three times older than estimated by the ôstandardõ mitochondrial rate of 2% sequence divergence per million years), likely triggered by Andean uplift, multiple episodes of marine transgressions in South America, and formation of present-day river basins. The time estimates are in agreement with other Neotropical taxa with similar geographic distributions.


Subject(s)
Animals , Birds/genetics , Phylogeography , DNA, Mitochondrial , Bayes Theorem , Phylogeny
4.
Braz. j. biol ; 66(1)2006.
Article in English | LILACS-Express | LILACS, VETINDEX | ID: biblio-1467783

ABSTRACT

Unlike other toucan species, the Toco toucan (Ramphastos toco) - the largest Ramphastidae - usually inhabits dry semi-open areas. This conspicuous canopy frugivore uses a large home range that includes a variety of vegetation types, among which gallery forests are widely cited as important to this species. However, the factors relating to the occurrence of Toco toucans in such habitats are unclear. I studied the abundance of Toco toucans as well as the availability of fleshy fruit in a gallery forest in the southern Pantanal (sub-region of Miranda, Brazil), in order to assess the relationship between these parameters. Also, I examined toucan foraging activity to analyze its relationship with both toucan abundance and fruit availability. The presence of the Toco toucan was more common in the gallery forest from the middle to the end of the dry season and during the middle of the wet season. Toucans foraged for fleshy fruits, mainly Genipa americana, Ficus luschnatiana, and Cecropia pachystachya fruits, feeding mostly on G. americana (by far the favorite food resource) and F. luschnatiana fruits during the dry season, while C. pachystachya fruits were important in the wet season. Toco toucans foraged particularly heavily (> 80% of foraging activity) on G. americana fruits during the latter part of the dry season, when fleshy fruit availability declined sharply. Toco toucan abundance in the gallery forest was associated with the availability of the most commonly consumed fleshy fruits, and also with its foraging activity. This finding suggests that the Toco toucan moved to the gallery forest periodically in response to the availability of abundant food resources, especially the G. americana fruits widely available and exploited during the severely dry season. Therefore, these fruits potentially contribute to Toco toucan persistence in the South Pantanal during the harshest period of the year.


Dentre as espécies de tucanos, a maior delas, tucano toco (Ramphastos toco), é singular, uma vez que é muito comum em ambientes semi-abertos e/ou com manchas de florestas. As matas ciliares são citadas como ambientes em que essa espécie é comum. No entanto, os fatores relacionados com a ocorrência de R. toco, nesse tipo de vegetação, são desconhecidos. Estudei a abundância do tucano toco na mata ciliar do rio Miranda (Pantanal Sul), bem como a oferta de frutos carnosos, com o propósito de avaliar as relações entre esses parâmetros. Também examinei a exploração de frutos para avaliar as relações com a sua disponibilidade, bem como com a ocorrência do tucano toco na mata ciliar. Esse tucano foi mais comum de meados para o final da estação seca e em meados da estação chuvosa. Os frutos de três espécies arbóreas, Genipa americana (de longe o mais utilizado), Ficus luschnatiana e Cecropia pachystachya, foram amplamente consumidos. Os frutos das duas primeiras espécies destacaram-se durante a estação seca, enquanto os frutos da terceira foram importantes na estação chuvosa. O uso dos frutos de G. americana foi particularmente intenso, sendo que, ao final da estação seca, mais de 80% dos registros de alimentação incluíram essa espécie, quando a oferta de frutos carnosos declinou substancialmente. A ocorrência do tucano toco na mata ciliar foi significativamente relacionada com a oferta dos frutos mais utilizados e, também, com a atividade de exploração desses recursos. Esses resultados sugerem que, periodicamente, o R. toco movimentava-se para a mata ciliar em resposta à oferta de recursos alimentares abundantes, sobretudo os frutos de G. americana, amplamente disponíveis durante a rigorosa estação seca. Portanto, esse recurso potencialmente contribui para a persistência do R. toco no Pantanal Sul durante o período mais severo do ano.

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