Results 21 to 30 of about 146,972 (332)

Chemical communication in the honeybee (Apis mellifera L.): a review

open access: yesVeterinární Medicína, 2011
An important area of physiology of the honeybee (Apis mellifera) is chemical communication between individuals and castes in the swarm, which maintains its integrity and function.
M. Trhlin, J. Rajchard
doaj   +1 more source

Brood overlap and male ornamentation in the double-brooded barn swallow [PDF]

open access: yesBehavioral Ecology, 2010
Brood overlap can be an optimal solution to the intraseasonal trade-off in the allocation of time between successive broods. In line with life-history theory, the extent of brood overlap should be adjusted according to the individual costs and benefits of the simultaneous investment into 2 broods. Phenotypic quality can affect these costs and benefits.
Martin U. Grüebler, Beat Naef-Daenzer
openaire   +3 more sources

Sanitizing the fortress: protection of ant brood and nest material by worker antibiotics [PDF]

open access: yes, 2013
Social groups are at particular risk for parasite infection, which is heightened in eusocial insects by the low genetic diversity of individuals within a colony. To combat this, adult ants have evolved a suite of defenses to protect each other, including
Graystock, P   +4 more
core   +1 more source

Measurement of brood patch temperature of British passerines using an infrared thermometer [PDF]

open access: yes, 2008
Capsule An infrared ear thermometer can be easily used to measure brood patch temperature in passerines caught on the nest or in mist ...
Deeming, Charles, du Feu, Christopher R.
core   +1 more source

Preparation technology of encapsulated homogenate of drone brood in the Republic of Kazakhstan [PDF]

open access: yesBrazilian Journal of Biology
Drone brood homogenate is a little-studied bee product used in medicine, veterinary medicine and cosmetology for treatment and prophylaxis. It is a very nutritious substance with a high content of active components: proteins, lipids, fatty acids ...
K. Zhumanov   +5 more
doaj   +1 more source

Brood thermoregulation effectiveness is positively linked to the amount of brood but not to the number of bees in honeybee colonies

open access: yesPeer Community Journal, 2023
To ensure the optimal development of brood, a honeybee colony needs to regulate its temperature within a certain range of values (thermoregulation), regardless of environmental changes in biotic and abiotic factors.
Godeau, Ugoline   +7 more
doaj   +1 more source

Behavioral modifications lead to disparate demographic consequences in two sympatric species

open access: yesEcology and Evolution, 2019
Life‐history theory suggests species that typically have a large number of offspring and high adult mortality may make decisions that benefit offspring survival in exchange for increased adult risks.
Evan P. Tanner   +4 more
doaj   +1 more source

Improved Pollination Efficiency and Reduced Honey Bee Colony Decline in Greenhouses by Allowing Access to the Outside During Part of the Day

open access: yesSociobiology, 2018
Although honey bees are efficient pollinators of many crops cultivated in greenhouses, it is difficult to maintain colony strength and consequently pollination efficiency. Many bees die under greenhouse conditions and the colonies rapidly weaken.
Daniel Nicodemo   +3 more
doaj   +1 more source

The influence of temperature and photoperiod on the timing of brood onset in hibernating honey bee colonies [PDF]

open access: yesPeerJ, 2018
In order to save resources, honey bee (Apis mellifera) colonies in the temperate zones stop brood rearing during winter. Brood rearing is resumed in late winter to build up a sufficient worker force that allows to exploit floral resources in upcoming ...
Fabian Nürnberger   +2 more
doaj   +2 more sources

Long-Term Population Monitoring of the Karner Blue (Lepidoptera: Lycaenidae) in Wisconsin, 1990-2004 [PDF]

open access: yes, 2018
We monitored Wisconsin populations of the Karner blue (Lycaeides melissa samuelis Nabokov, Lepidoptera: Lycaenidae) during 1990-2004. We surveyed consecutive spring and summer broods in two contiguous central Wisconsin counties (Jackson, Wood), starting ...
Swengel, Ann B, Swengel, Scott R
core   +2 more sources

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