Results 191 to 200 of about 89,219 (393)

Genetic Basis of UV Bullseye Size Variations in Turnip Rape (Brassica rapa subsp. oleifera)

open access: yesPlant Biotechnology Journal, EarlyView.
ABSTRACT Floral ultraviolet (UV) patterns are visible to bee pollinators and can affect crop yields by impacting pollinator visitation. However, the mechanisms underlying the intraspecific variations of UV bullseye size remain largely unknown. We analyse the ecological consequences and genetic basis of floral UV bullseye size variation in an important ...
Zhi‐Li Zhou   +11 more
wiley   +1 more source

Tranų (apis mellifera l.) skraidymo ritmai

open access: yes, 2007
2004 ir 2006 m. birželio – rugpjūčio mėn. buvo tiriama medunešių bičių (Apis mellifera L.) tranų skraidymo pradžia, tranų skraidymo dinamika dienos metu ir kokią įtaką jai daro aplinkos temperatūra. Įvertintas išskrendančių ir atskrendančių į tą pačią bičių šeimą tranų skaičius bei tranų skridimas į svetimas bi ių šeimas.
openaire   +1 more source

Марийская популяция пчел apis mellifera mellifera L. в XXI В.

open access: yesВестник Российского университета дружбы народов. Серия: Агрономия и животноводство, 2011
В статье рассматриваются результаты изучения породности марийской популяции пчел среднерусской породы. В пасеках Республики Марий Эл только 45% пчелосемей имеют характерные признаки среднерусской породы; остальные имеют признаки метизации с пчелами желтой кавказской породы. Результаты изучения морфофизиологических характеристик пчел марийской популяции
openaire   +1 more source

Macronutrient composition in pollen affects development and survival in wild bees

open access: yesPhysiological Entomology, EarlyView.
Small carpenter bees (Ceratina calcarata) were reared on diets formulated with black poplar and dandelion pollen, while closely monitoring developmental metrics, lipid content and survival. Macronutrient analyses on both pollen types revealed dandelion pollen contained lower levels of protein, essential amino acids and several fatty acids, which ...
Khara W. Stephen, Sandra M. Rehan
wiley   +1 more source

Produtos naturais no comportamento defensivo de Apis mellifera L. = Natural products in the defensive behaviour of Apis mellifera L.

open access: yesActa Scientiarum: Animal Sciences, 2010
Os objetivos do estudo foram investigar a influência de produtos naturais como capim-limão (Cymbopogon citratus), folhas de abacateiro (Persea americana), casca de café (Coffea arabica) e sementes de mamona (Ricinus communis) na defensividade de Apis ...
Renata Leonardo Lomele   +5 more
doaj  

Wing venation teratology in Apis mellifera L.

open access: yes, 2014
Honey bee (Apis mellifera L.) wing venation is quite distinctive and the resulting pattern is currently used in subspecies discrimination. In recent years the forewings of worker bees sampled in A. m. mellifera, A. m. ligustica, A. m. carnica, and hybrid colonies were examined and various abnormalities - due to the presence of both supernumerary and ...
PORPORATO, Marco   +3 more
openaire   +1 more source

Dragon Fruit (Hylocereus undatus) Pollination in New Zealand: A Preliminary Report on Flower Visitors, Natural Pollen Deposition, and Artificial Pollination

open access: yesNew Zealand Journal of Crop and Horticultural Science, Volume 54, Issue 1, March 2026.
Dragon fruit (pitaya; Hylocereus undatus) is a promising, new high‐value crop in New Zealand. The large nocturnal flowers open for one night and close early in the morning the following day over a 3‐ to 6‐month long flowering period. In dragon fruit's native range, hawkmoths and bats are key nocturnal pollinators, and honey bees visit flowers during ...
Max N. Buxton   +2 more
wiley   +1 more source

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