Results 61 to 70 of about 1,970 (204)

The magnitude of cryptic insect diversity in one tropical rainforest

open access: yesInsect Conservation and Diversity, Volume 18, Issue 6, Page 1163-1174, November 2025.
We detected 214 cryptic species out of a total of 2006 species (10.6%) examined from 22 focal insect taxa in 1500 ha tropical rainforest in Panama. The percentage of cryptic species varied greatly among assemblages (0%–19%), with half of the assemblages devoid of cryptic species and the highest proportions of cryptics in Pieridae and Formicidae ...
Yves Basset   +8 more
wiley   +1 more source

Polinização por abelhas em Aechmea caudata lindm., uma bromélia com características ornitófilas, na ilha de Santa Catarina, Sul do Brasil [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-graduação em Biologia Vegetal, Florianópolis, 2009A maioria das espécies de Bromeliaceae é polinizada por beija-flores, mas borboletas e ...
Kamke, Rafael
core  

Protein and alkaloid patterns of the floral nectar in some solanaceous species [PDF]

open access: yes, 2015
The family Solanaceae includes several melliferous plants, which tend to produce copious amounts of nectar. Floral nectar is a chemically complex aqueous solution, dominated by sugars, but minor components such as amino acids, proteins, flavonoids and ...
Bacskay, Ivett   +5 more
core   +1 more source

The Large Carpenter Bees (Xylocopa, Apidae) of the Neotropical Region: Phylogenetics, Classification and Biogeography

open access: yesZoologica Scripta, Volume 54, Issue 6, Page 884-896, November 2025.
ABSTRACT The large carpenter bees of the genus Xylocopa comprise almost 400 species distributed worldwide. Their large body and ability to build nests through woodworking make them one of the most remarkable groups of bees. In the Neotropics, they comprise over 100 species occurring in tropical and subtropical environments including islands in the ...
Gabriel A. R. Melo, Aline C. Martins
wiley   +1 more source

Combining Distribution Models of Plants and Their Mutualists to Map Gaps in the Knowledge of Ecological Interactions

open access: yesDiversity and Distributions, Volume 31, Issue 10, October 2025.
ABSTRACT Aim The distribution of species relying on mutualistic partners for reproduction can be constrained by their partners' distribution. Nonetheless, biotic interactions are often overlooked when estimating the distributions of species (e.g., pollinators of a given plant and the proportion of them with their distribution modelled). In the Tropics,
Amanda Fricensaft Baracat   +3 more
wiley   +1 more source

Kinematics of hovering hummingbird flight along simulated and natural elevational gradients [PDF]

open access: yes, 2003
Hovering flight is one of the most energetically demanding forms of animal locomotion. Despite the cost, hummingbirds regularly hover at high elevations, where flight is doubly challenging because of reduced air density and oxygen availability.
Altshuler, Douglas L., Dudley, Robert
core  

Revision of the species of Melipona of the fuliginosa group (Hymenoptera, Apoidea, Apidae, Meliponini) [PDF]

open access: yes, 2008
Três espécies são reconhecidas: Melipona (Michmelia) fuliginosa Lepeletier, 1836, de larga distribuição, do Suriname e Guiana Francesa até o sudeste do Brasil e noroeste da Argentina, M.
CAMARGO, João M. F.   +1 more
core   +2 more sources

Preliminary study of insect attraction by a mixture of semiochemicals containing 1,2,4-Trimethoxybenzene in domestic citric-culture

open access: yesQuímica Nova, 2010
In this work we describe a new efficient strategy for the preparation of 1,2,4-trimethoxybenzene (3) in 56% overall yield. The compound 3 was used in a preliminary study of insect attraction by a mixture of semiochemicals called TIV, composed of indol (1)
Ana Paula L. Alves   +5 more
doaj   +1 more source

The production of elevated flight force compromises manoeuvrability in the fruit fly Drosophila melanogaster [PDF]

open access: yes, 2001
In this study, we have investigated how enhanced total flight force production compromises steering performance in tethered flying fruit flies, Drosophila melanogaster.
Dickinson, Michael H.   +1 more
core  

Pheromone Analyses of the Anastrepha fraterculus (Diptera: Tephritidae) Cryptic Species Complex [PDF]

open access: yes, 2018
The South American fruit fly Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) cryptic species complex is presently one of the most studied pest models in terms of speciation and population mating compatibility.
BRAVO, I. S. J.   +11 more
core   +1 more source

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