Results 21 to 30 of about 3,710 (158)

Comparative chromosome painting in hummingbirds (Trochilidae). [PDF]

open access: yes, 2022
Hummingbirds (Trochilidae) are one of the most enigmatic avian groups, and also among the most diverse, with approximately 360 recognized species in 106 genera, of which 43 are monotypic.

core   +2 more sources

Estado del arte del conocimiento de biodiversidad de los polinizadores de México

open access: yesRevista Mexicana de Biodiversidad, 2022
La conservación de las especies polinizadoras es de gran interés para la humanidad. Además de ayudar en el mantenimiento del ensamblaje de los ecosistemas, los polinizadores permiten la producción de más de 75% de los cultivos alimenticios.
Angela Nava-Bolaños   +2 more
doaj   +1 more source

Bract size affects resource availability and fruit set in a hummingbird-pollinated plant with distyly polymorphism. [PDF]

open access: yesPlant Biol (Stuttg)
In Psychotria poeppigiana, larger bracts honestly signal greater nectar availability but have higher mortality, while smaller bracts produce more fruit, revealing a surprising trade‐off and hints of sexual role specialization in this distylous species. Abstract Plants can use non‐floral signals to advertise the presence of resources to pollinators. The
Trevizan R   +4 more
europepmc   +2 more sources

Influence of drought stress on the metabolite and ion composition in nectar and nectaries of different day- and night-flowering Nicotiana species. [PDF]

open access: yesPlant Biol (Stuttg)
Drought stress leads to reduced nectar secretion and alters nectar composition of day‐ and night‐flowering Nicotiana species, which may impair plant–pollinator interactions. Abstract The frequencies of droughts worldwide will increase in the future due to climate changes. Nectar composition of plant species varies in relation to pollinator and can also
Göttlinger T   +3 more
europepmc   +2 more sources

Phoretic mites (Rhinoseius spp.) in Apodiformes from Cerrado and Pantanal Biomes in midwestern Brazil [PDF]

open access: yesBrazilian Journal of Biology, 2019
Nasal mites are commonly found in hummingbirds (Apodiformes). In most cases, endoparasitic mites were reported to parasitize the respiratory system, particularly the anterior nasal chambers, larynx, trachea, lungs, and the air and conjunctival sacs ...
D. G. S. Ramos   +8 more
doaj   +2 more sources

Conscientious workmen or booksellers' hacks? : the professional identities of science writers in the mid-nineteenth century [PDF]

open access: yes, 2014
Existing scholarship on the debates over expertise in mid-nineteenth-century Britain has demonstrated the importance of popular writings on the sciences to definitions of scientific authority.
Fyfe, Aileen
core   +2 more sources

New data of the distribution of the Green-fronted Lancebill Doryfera ludovicae (Trochilidae) and of the Olive Finch Arremon castaneiceps (Emberizidae) in the province of El Oro, Ecuador

open access: yesACI Avances en Ciencias e Ingenierías, 2014
We report new distribution records for Doryfera ludovicae (Trochilidae) and Arremon castaneiceps (Emberizidae), from southwestern Ecuador, based on mist-netting captures and visual observations.
Glenda M. Pozo-Zamora   +3 more
doaj   +1 more source

First record of Philornis glaucinis Dodge & Aitken, 1968 (Diptera: Muscidae) in Thalurania glaucopis Gmelin, 1788 (Aves: Trochilidae) [PDF]

open access: yesBiotemas, 2010
From the groups causing myiasis, the genus Philornis Meinert, 1890 appears as the only representative of the family Muscidae, obligatorily associated with birds. Thus, the aim of this work was to report the occurrence of Philornis in Thalurania glaucopis
Hermes Ribeiro Luz   +4 more
doaj   +3 more sources

El alimento de algunos picaflores

open access: yesEl Hornero, 1920
Este artículo no cuenta con un resumen.
Alberto Castellanos
doaj   +1 more source

Evaluation of minimally invasive sampling methods for detecting Avipoxvirus: Hummingbirds as a case example

open access: yesFrontiers in Veterinary Science, 2022
Avian pox is a common avian virus that in its cutaneous form can cause characteristic lesions on a bird's dermal surfaces. Detection of avian pox in free-ranging birds historically relied on observations of visual lesions and/or histopathology, both ...
Aoife N. Galvin   +10 more
doaj   +1 more source

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