Abundance and frugivory of the toco toucan (Ramphastos toco) in a gallery forest in Brazil's Southern Pantanal

Ragusa-Netto, J.

doi:10.1590/s1519-69842006000100017

Cited by 24 publications

(26 citation statements)

References 34 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These birds are typical Scansores (Holbrook & Smith, ; Kemp, ; Trail, ). The toucan resembles the hornbill, and it is distributed in semi‐open habitats throughout a large part of central and eastern South America (Ragusa‐Netto, ). As ornamental birds, hornbill and toucan are common found species in zoos around the world (Seki, Bodde, & Meyers, ).…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

et al. 2018

View full text Add to dashboard Cite

Gut microbiota plays an important role in animals and are considered microbial organs. Hornbill and toucan are birds of the same ecotypes with high appreciative value. In this study, we characterized and compared the gut microbiota of toco toucan ( Ramphastos toco ), great hornbill ( Buceros bicornis ) and wreathed hornbill ( Rhyticeros undulatus ) using 16S rRNA high‐throughput sequencing technology, and further discussed the influence of host bird genetics on its gut microbiota. We identified 10,847 operational taxonomic units (OTUs) from the hyper‐variable V4–V5 region, representing 14 phyla that were dominated by the Firmicutes, Proteobacteria, Cyanobacteria, Fusobacteria, Actinobacteria, and Bacteroidetes. Alpha diversity indices showed no significant difference among the three species ( p > 0.1). However, great hornbill and toco toucan shared a high number of OTUs. Principal component analysis also revealed highly similar gut microbiotas between the two distant species. Therefore, environmental factors might dominate over host genetics in shaping the gut microbiotas of hornbill and toucan. Our study would contribute in elucidating adaptation of the hornbill and toucan to environmental change.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Species that produce leaves, flowers or fruits during periods of low resource availability may be considered important food producers for fauna (Terborgh, 1986;Shanahan et al, 2001;Ragusa-Netto, 2006;2007). Among them, we highlight the fig tree (Ficus spp.…”

Section: Introductionmentioning

confidence: 99%

Phenology of two Ficus species in seasonal semi-deciduous forest in Southern Brazil

et al. 2015

View full text Add to dashboard Cite

We analyzed the phenology of Ficus adhatodifolia Schott ex Spreng. (23 fig tree) and F. eximia Schott (12 fig tree) for 74 months in a remnant of seasonal semi-deciduous forest (23°27'S and 51°15'W), Southern Brazil and discussed their importance to frugivorous. Leaf drop, leaf flush, syconia production and dispersal were recorded. These phenophases occurred year-round, but seasonal peaks were recorded in both leaf phenophases for F. eximia and leaf flushing for F. adhatodifolia. Climatic variables analyzed were positively correlated with reproductive phenophases of F. adhatodifolia and negatively correlated with the vegetative phenophases of F. eximia. In despite of environmental seasonality, little seasonality in the phenology of two species was observed, especially in the reproductive phenology. Both species were important to frugivorous, but F. adhatodifolia can play a relevant role in the remnant. Keywords

show abstract

“…Their occurrence was very distinct from those of toucans and parrots, which periodically moved in large numbers to the gallery forest in order to deplete massive food resource (Ragusa-Netto, 2004, 2006, 2008b, a pattern of habitat use typical of frugivorous birds in which their abundance often switch from absence to enhanced numbers according to the fruit pattern (van Schaik et al, 1993). Therefore, the Miranda river gallery forest, potentially, is a permanent habitat for the Chaco chachalaca.…”

Section: Ortalis Canicollis Feeding Habitsmentioning

confidence: 99%

Chaco Chachalaca (Ortalis canicollis, Wagler, 1830) feeding ecology in a gallery forest in the South Pantanal (Brazil)

Ragusa-Netto

2015

Braz. J. Biol.

Self Cite

View full text Add to dashboard Cite

Cracids are generalist frugivores, which often exploit plant food resources such as flowers and leaves, mainly when fruit production declines. The Chaco chachalaca (Ortalis canicollis) is the most abundant cracid in the Pantanal (Brazil), and particularly common in the gallery forests. However, the factors related to their occurrence in this habitat type are unclear. In this study I describe the feeding habits and feeding niche breadth fluctuations of the Chaco chachalaca in relation to food resources abundance and diversity at the Miranda river gallery forest (Southern Pantanal). I also analyzed the relationships between Chaco chachalacas feeding activity and food resources abundance. This parameter (flowers and fruits) exhibited significant seasonal differences of abundance in which flowers were plentiful at the end of the dry, while fruits were abundant during the early wet season. However, food resources diversity to Chaco chachalacas exhibited no seasonal difference. Their feeding activity paralleled the availability of food resources, so that when some items were massively available an enhanced number of Chaco chachalacas foraged in the gallery forest, particularly during the prolonged dry season when they extensively used flowers and Genipa americana fruits. In fact, the Chaco chachalaca feeding niche breadth value presented low values in this period, while high values were common in the rest of the year. The flexible diet of this cracid, potentially favors their year round presence in the gallery forest, mainly during the prolonged dry season when the propensity for famine might be high. Since the Chaco chachalaca is among the largest and most abundant canopy frugivores in the gallery forest, it may contribute to forest regeneration, an underscored role due to the impact of annual floods and meandering dynamics on tree loss.Keywords: Cracidae, canopy phenology, Pantanal, Ortalis canicollis, frugivory. Ecologia alimentar do aracuã-do-pantanal (Ortalis canicollis) em uma floresta ripária no Pantanal Sul ResumoCracídeos são frugívoros generalistas que, também, exploram flores e folhas, sobretudo quando frutos são escassos. No Pantanal (Brasil), o aracuã-do-pantanal (Ortalis canicollis) é o cracídeo mais abundante, sendo particularmente comum em matas ciliares. No entanto, os fatores relacionados com sua ocorrência nesse habitat são desconhecidos. Nesse estudo eu descrevo tanto os hábitos alimentares quanto as variações de amplitude de nicho alimentar do aracuã-do-pantanal em relação à abundância e diversidade de recursos alimentares na mata ciliar do rio Miranda (Pantanal-Sul, Brasil). Também, analisei a relação entre atividade alimentar e oferta de recursos alimentares. Esse parâmetro (flores e frutos) exibiu variações significativas de abundância em que a produção de flores foi pronunciada de meados para o final da estação seca, enquanto a oferta de frutos foi elevada do início para meados da estação chuvosa. No entanto, a diversidade de recursos alimentares disponíveis para o aracuã-do-pantanal n...

show abstract

Abundance and frugivory of the toco toucan (Ramphastos toco) in a gallery forest in Brazil's Southern Pantanal

Cited by 24 publications

References 34 publications

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

Phenology of two Ficus species in seasonal semi-deciduous forest in Southern Brazil

Chaco Chachalaca (Ortalis canicollis, Wagler, 1830) feeding ecology in a gallery forest in the South Pantanal (Brazil)

Contact Info

Product

Resources

About