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Apis cerana indica

About: Apis cerana indica is a research topic. Over the lifetime, 192 publications have been published within this topic receiving 1167 citations.


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Journal ArticleDOI
TL;DR: Both species of honeybees have a thermal safety factor in heat-killing such wasp predators, and the results show remarkable thermal fine-tuning in a co-evolving predator–prey relationship.
Abstract: Defensiveness of honeybee colonies of Apis cerana and Apis mellifera (actively balling the wasps but reduction of foraging) against predatory wasps, Vespa velutina, and false wasps was assessed. There were significantly more worker bees in balls of the former than latter. Core temperatures in a ball around a live wasp of A. cerana were significantly higher than those of A. mellifera, and also significantly more when exposed to false wasps. Core temperatures of bee balls exposed to false wasps were significantly lower than those exposed to V. velutina for both A. cerana and for A. mellifera. The lethal thermal limits for V. velutina, A. cerana and A. mellifera were significantly different, so that both species of honeybees have a thermal safety factor in heat-killing such wasp predators. During wasps attacks at the hives measured at 3, 6 and 12 min, the numbers of Apis cerana cerana and Apis cerana indica bees continuing to forage were significantly reduced with increased wasp attack time. Tropical lowland A. c. indica reduced foraging rates significantly more than the highland A. c. cerana bees; but, there was no significant effect on foraging by A. mellifera. The latency to recovery of honeybee foraging was significantly greater the longer the duration of wasp attacks. The results show remarkable thermal fine-tuning in a co-evolving predator-prey relationship.

111 citations

Journal ArticleDOI
TL;DR: Dans 10 colonies d'Apis cerana indica a Allahabad (Inde), on a controle le parasitisme naturel du couvain par Varroa jacobsoni en inspectant 2 fois par mois 100 cellules de couvains opercule d'ouvrieres, et 100 de mâles lorsqu'il y en avait.
Abstract: Dans 10 colonies d'Apis cerana indica a Allahabad (Inde), on a controle le parasitisme naturel du couvain par Varroa jacobsoni en inspectant 2 fois par mois 100 cellules de couvain opercule d'ouvrieres, et 100 de mâles lorsqu'il y en avait. Au printemps il n'y avait presque pas d'acariens sur le couvain d'ouvrieres; pendant la saison des pluies par contre et dans certaines colonies, plus de 5% des cellules d'ouvrieres renfermaient des varroas femelles. Pourtant celles-ci ne se reproduisaient pas

64 citations

Journal ArticleDOI
TL;DR: A Allahabad (Inde du Nord), on a preleve au printemps des echantillons d'hemolymphe dans du couvain opercule d'ouvrieres and de mâles issu of 4 colonies d'Apis cerana indica and d'une colonie d' Apis mellifera ligustica.
Abstract: A Allahabad (Inde du Nord), on a preleve au printemps des echantillons d'hemolymphe dans du couvain opercule d'ouvrieres et de mâles issu de 4 colonies d'Apis cerana indica et d'une colonie d'Apis mellifera ligustica. On a en outre ouvert plus de 1 000 cellules de couvain renfermant des nymphes d'A c indica pour verifier la presence de Varroa jacobsoni, et on a note si les femelles de Varroa s'etaient reproduites. Les echantillons d'hemolymphe ont ete envoyes en Europe et leur teneur en hormone juvenile III (JH) a ete determinee par methode radio-immunologique

37 citations

Journal ArticleDOI
TL;DR: Comparative studies were made in Germany with strains of Apis cerana from different parts of the Indian subcontinent and from China, finding that successful mating flights were longer than those of A. mellifera.
Abstract: SummaryComparative studies were made in Germany with strains of Apis cerana from different parts of the Indian subcontinent and from China. Flight activity of drones and queens of Apis cerana indica was observed in an isolated place; 8 queens mated, 3 of them on two flights. Successful mating flights were longer than those of A. mellifera (average 30·8 minutes).

36 citations

Journal ArticleDOI
TL;DR: Foragers of A. mellifera carried significantly heavier pollen loads, touched more stigmas and remained longer on individual appl... by placing both species in the same orchard the duration of peak activity might be prolonged and better pollination obtained.
Abstract: SummaryThe foraging behaviour of A. mellifera and A. c. indica honeybees on apple flowers was studied at three altitudes in the north-west Himalayas (1350, 1875 and 2400 m above sea level). A. cerana indica began to forage earlier in the morning than A. mellifera and stopped later in the evening at all three altitudes. Foraging trips by A. mellifera lasted significantly longer (P<0·01). In both species nectar collectors outnumbered pollen collectors (P<0·01), the mean ratio of pollen to nectar collectors being 1:2·08 for A. c. indica and 1:2·78 for A. mellifera. Peak foraging activity for A. c. indica occurred at 09.00–11.30h. min when the temperature ranged between 15·5 and 21°C and 11.00–13.30 h. min for A. mellifera when the temperature was 21 to 25°C. By placing both species in the same orchard the duration of peak activity might be prolonged and better pollination obtained. Foragers of A. mellifera carried significantly heavier pollen loads, touched more stigmas and remained longer on individual appl...

33 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20217
202013
20196
20188
20176
20169