Results 31 to 40 of about 1,255 (181)

MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures

open access: yesMolecules, 2014
The structural chemistry of proanthocyanidin molecules has been investigated in temperate zone plants, but few studies have been done with plants of the Amazonian lowland tropical wet forests where herbivore pressure is more extensive and diverse.
Alex Van Huynh, John M. Bevington
doaj   +1 more source

Florística e estrutura de fragmento florestal em área de transição na Amazônia Matogrossense no município de Sinop Floristics and structure of a forest fragment at a transitional zone at the Amazon in Mato Grosso State, Municipality of Sinop

open access: yesActa Amazonica, 2009
A fragmentação do ambiente é intensa na amazônia matogrossense e é esperado como consequência, além do desaparecimento da vegetação original, que a flora dos fragmentos seja transicional, com elementos de floresta amazônica e de cerrado e que já ...
Rosalia de Aguiar Araujo   +5 more
doaj   +1 more source

Pollen Profile of Geopropolis Samples Collected by Native Bees (Meliponini) in Some South American Countries

open access: yesSociobiology, 2014
A total of 16 geopropolis samples from Brazil, Bolivia and Venezuela were analysed in the present study. Samples were submitted to the standard procedure used to obtain pollen grains and additional structured elements.
Ortrud Monika Barth
doaj   +1 more source

New records of herbivory of Leucothyreus MacLeay, 1819 (Coleoptera: Scarabaeidae: Geniatini) on Cecropia Loefl. (Urticaceae)

open access: yesEntomological Communications
Species in the genus Cecropia Loefl. (Urticaceae) are important food sources for a handful of species belonging to the insect orders Orthoptera (grasshoppers), Lepidoptera (caterpillars), Hymenoptera (leafcutter ants), and Coleoptera (beetles).
Daniel P. P. Aguiar, Matheus Bento
doaj   +1 more source

Evaluation of the antifungal activity of plant extracts and oral antiseptics against Candida albicans

open access: yesBrazilian Dental Science, 2014
Objective: Oral candidiasis is the most common fungal infection of the oral cavity, and Candida albicans is the most frequently isolated species. Material and Methods: In this study, the potential antifungal effect of extracts from Gossypium hirsutum L.,
Roberta Carvalho Sthel Balliana   +3 more
doaj   +1 more source

Pentacyclic Triterpene Profile and Its Biosynthetic Pathway in Cecropia telenitida as a Prospective Dietary Supplement

open access: yesMolecules, 2021
Promising research over the past decades has shown that some types of pentacyclic triterpenes (PTs) are associated with the prevention of type 2 diabetes (T2D), especially those found in foods.
Gustavo Gutiérrez   +8 more
doaj   +1 more source

Herbivores just need a calm place to feed: Ants cannot help them

open access: yesEntomological Communications, 2020
Why do herbivores, like Coelomera sp., seek to consume leaf tissue of Cecropia pachystachya colonized by Azteca alfari Emery, 1893 if they are at risk of being attacked by these ants?
Antônio C. M. Queiroz   +2 more
doaj   +1 more source

Bird-plant interactions on the edge of a forest fragment in southwestern Brazilian Amazonia

open access: yesActa Scientiarum: Biological Sciences, 2020
Seed dispersal is one of the principal ecological processes that determine the richness and distribution of plants in tropical forests. Birds play an important role in the zoochoric dispersal of seeds in these forests.
Luana Alencar, Edson Guilherme
doaj   +1 more source

Fruit use and fruit processing by euphonias, specialized avian frugivores

open access: yesOikos, EarlyView.
Euphonias (Neotropical passerines in the genera Euphonia and Chlorophonia) form the quintessential example of a specialized avian frugivore, combining a high reliance on fruit as food and the restriction of fruit taxa exploited. To understand their specialization, we explored the integration of fruit morphological and nutritional traits with their ...
Marco A. Pizo   +3 more
wiley   +1 more source

Life is in the air: An expedition into the Amazonian atmosphere

open access: yesFrontiers in Ecology and Evolution, 2022
Biological particles suspended in the atmosphere have a crucial role in the dynamics of the biosphere underneath. Although much attention is paid for the chemical and physical properties of these particles, their biological taxonomic identity, which is ...
Sylvia Mota de Oliveira   +15 more
doaj   +1 more source

Home - About - Disclaimer - Privacy