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Registros recuperados: 9
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An interesting method of pollen collecting by bees from flowers with tubular anthers National Institute of Agronomic Research
Michener, Charles D..
Varous plants have anthers which open by apical pores; in some (Cassia in the Leguminosae and Solanum wendlandii in the Solanaceae ) the pollen does not readily come out of these pores, yet is abundant and is collected and used by females of certain large and moderate sized bees. A bee obtains pollen by curling its body over the ends of the anthers and then vibrating its wings (wings held in folded position). The vibrations, which produce a loud sound, cause the pollen grains to shoot out of the pores in the anthers ; many of them lodge on the body of the bee from which they are transferred to the pollen-carrying scopal hairs. A vibrating knife blade touched to the anthers also causes pollen to be discharged through the pores. The bees concerned are all...
Tipo: Journal Article-postprint Palavras-chave: FORAGING; POLLEN; CASSIA; LEGUMISOSAE; SOLANUM; SOLANACEAE; ANTHER; SOUND; VIBRATION; FLORAL BIOLOGY; PLANT-POLLINATOR RELATIONSHIP; BUTINAGE; POLLEN; CASSIA; LEGUMISOSAE; SOLANUM; SOLANACEAE; ANTHERE; SON; VIBRATION; BIOLOGIE FLORALE; RELATION PLANTE-POLLINISATEUR.
Ano: 1962 URL: http://hdl.handle.net/2174/466
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Comportement d'une colonies d'abeilles à des températures extrêmes National Institute of Agronomic Research
Lenski, Y..
A study was made of the effect of high temperatures on thermoregulation in a honeybee colony and on the behaviour of the bees. Thermoregulation was limited to the brood-nest. Its temperature did not exceed 37·6°C while the ambient one was 48°C. The activity of forager bees continued in spite of the extremely high temperatures (up to 48°C). During the middle of the day this activity decreased, but it was resumed as a result of transport of liquids when the ambient temperature was still 47·O°C. The activity of ventilating bees at the hive entrance and the velocity of the air current were influenced by the fluctuation of the temperature of the brood-nest. The activity of water carriers was not affected directly by the ambient temperature but by that of the...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; TEMPERATURE; THERMOREGULATION; BEHAVIOUR; FORAGING; VENTILATING; SUCROSE SOLUTION CARRIER; ABEILLE DOMESTIQUE; INSECTE SOCIAL; TEMPERATURE; THERMOREGULATION; COMPORTEMENT; BUTINAGE; VENTILATION; TRANSPORT DE SOLUTION SUCREE.
Ano: 1964 URL: http://hdl.handle.net/2174/449
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Diurnal and seasonal fluctuations of the number of pollen-foragers in a single honeybee colony National Institute of Agronomic Research
Moriya, Kiyoki.
According to the previous studies, the pollen income to the honeybee colony varies seasonally and increases parallel to the upswing of brood rearing. This fact suggests that some regulative functions act to increase the number of pollen-foragers. As the first step to analyse such probable regulation, the diurnal and seasonal variations of the number of pollen-foragers were observed correspondent to the population growth of a single honeybee colony. The counts were made about weekly from late April to mid September on the days of favorable weather conditions in 1959. The number of homing bees and pollen-foragers among them were counted at the hive entrance from 8 : 00 to 17 : 00 for 10 minutes at intervals of an hour. The population growth was estimated by...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; FORAGING; POLLEN; DAYTIME; SEASON; QUANTITATIVE STUDY; ABEILLE DOMESTIQUE; INSECTE SOCIAL; BUTINAGE; POLLEN; JOURNEE; SAISON; ETUDE QUANTITATIVE.
Ano: 1961 URL: http://hdl.handle.net/2174/480
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Effect of carbon dioxide anaesthesia on bee behaviour and expectation of life National Institute of Agronomic Research
Austin, G.H..
The reported changes in foraging behaviour of honeybees after carbon dioxide anaesthesia (Ribbands, 1950) led to somewhat similar tests being made in this laboratory. The treatments were extended to include variously aged instars. Observations were also made on the effects of carbon dioxide narcosis on colony behaviour and upon the life expectancy of newly emerged bees
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; CARBON DIOXIDE; ANAESTHESIA; BEHAVIOUR; FORAGING; AGE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; DIOXYDE DE CARBONE; ANESTHESIE; COMPORTEMENT; BUTINAGE; AGE.
Ano: 1955 URL: http://hdl.handle.net/2174/458
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Multi-scale habitat selection and foraging ecology of the eurasian hoopoe (Upupa epops) in pine plantations Inra
Barbaro, L.; Couzi, L.; Bretagnolle, V.; Nezan, J.; Vetillard, F..
Bird conservation can be challenging in landscapes with high habitat turnover such as planted forests, especially for species that require large home ranges and juxtaposition of different habitats to complete their life cycle. The eurasian hoopoe (Upupa epops) has declined severely in western Europe but is still abundant in south-western France. We studied habitat selection of hoopoes in pine plantation forests using a multi-scale survey, including point-counts at the landscape level and radio-tracking at the home-range scale. We quantified habitat use by systematically observing bird behaviour and characterized foraging sites according to micro-habitat variables and abundance of the main prey in the study area, the pine processionary moth (Thaumetopoea...
Tipo: Journal Article Palavras-chave: FORET CULTIVEE BIRD CONSERVATION; FORAGING; HABITAT COMPLEMENTATION; HOME RANGE; MOSAIC LANDSCAPE; PINE PLANTATIONS; RADIO-TRACKING.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008e796be76&uri=/notices/prodinra1/2010/11/
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The behaviour of bees when foraging National Institute of Agronomic Research
Butler, C.G..
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; SOCIAL INSECT; POLLINATOR; HYMENOPTERA; APOIDEA; APIDAE; APIS MELLIFERA; BEHAVIOUR; FORAGING; ABEILLE DOMESTIQUE; INSECTE SOCIAL; POLLINISATEUR; HYMENOPTERA; APOIDEA; APIS MELLIFERA; APIDAE; COMPORTEMENT; BUTINAGE.
Ano: 1945 URL: http://hdl.handle.net/2174/359
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The effect of the size of a honeybee colony on its foraging activity National Institute of Agronomic Research
Free, J. B.; Preece, D. A..
Deterioration in foraging conditions discourages foraging relatively more from large than from small colonies. Une détérioration des conditions de butinage décourage relativement plus le butinage chez les fortes colonies que chez les petites.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; COLONY; SIZE; FORAGING; ABEILLE DOMESTIQUE; INSECTE SOCIAL; COLONIE; TAILLE; BUTINAGE.
Ano: 1969 URL: http://hdl.handle.net/2174/355
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The importance of perfume in the discovery of food by the worker honeybee (Apis mellifera L.) National Institute of Agronomic Research
Butler, C.G..
There is a natural tendency for untrained scouting bees to associate certain perfumes with food (e.g. those of the flowers of Crataegus oxyacantha and Trifolium repens) whereas the perfume of some other flowers (e.g. Spirea arguta) are unattractive to the honeybee. If the perfume of a new crop of flowers is sufficiently strong it will sometimes attract scouting bees when they are still unable to see the flowers. It is often necessary for a bee to approach within an inch or so of a flower before she can discern any perfume it may possess. When a bee approaches an object closely enough any attractive perfume it may possess tends to act as a stimulus to further exploration which involves settling upon the object and possibly seeking food in any small crevice...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; SOCIAL INSECT; POLLINATOR; APIDAE; APOIDEA; HYMENOPTERA; APIS MELLIFERA; FORAGING; PLANT INSECT RELATIONSHIP; OLFACTION; PERFUME; TRAINING; ABEILLE DOMESTIQUE; INSECTE SOCIAL; POLLINISATEUR; HYMENOPTERA; APOIDEA; APIS MELLIFERA; APIDAE; BUTINAGE; RELATION PLANTE INSECTE; OLFACTION.
Ano: 1951 URL: http://hdl.handle.net/2174/356
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When sheep and shrub make peace on rangelands: linking the dynamics of ruminant feeding behavior and dominant shrub responses on rangeland Inra
Agreil, C.; Magda, D.; Meuret, M.; Hazard, L.; Osty, J.P..
After several decades of marginalization within farming systems, European rangelands are now being challenged to contribute to the conservation of ecological habitats and biodiversity. One of the main challenges, supported by the European Union incentives, relates to the reconciliation of livestock farmers’ grazing practices and to the control of dominant plant dynamics, especially those of shrub species, which includes maintaining them at density levels appropriate for both habitat conservation and forage resources production. In this chapter, we aim to identify reasons for the difficulty in designing relevant management practices, with focus on the interlinkage of knowledge produced by animal sciences and plant population ecology. From the point of view...
Tipo: Book Chapter Palavras-chave: DYNAMIQUE DE LA VEGETATION BROWSING; SMALL RUMINANTS; SHRUB POPULATION; DEMOGRAPHY; DOMINANT SPECIES; FORAGING; RANGELAND MANAGEMENT; SHRUB DYNAMICS; FORAGE RESOURCES.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20101f3f3d7d&uri=/notices/prodinra1/2010/10/
Registros recuperados: 9
Primeira ... 1 ... Última
 

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