Colony pollen reserves affect body size, sperm production and sexual development in males of the stingless bee Melipona beecheiiSpringer Science and Business Media LLC - Tập 59 - Trang 417-424 - 2012
F. G. Pech-May, L. Medina-Medina, W. de J. May-Itzá, R. J. Paxton, J. J. G. Quezada-Euán
The production of male sexual offspring by social insect colonies is often strongly seasonal or resource-dependent. In stingless bees, males are produced in smaller numbers under conditions of low colony food reserves; whether such males are negatively affected in traits related to reproductive success is not known. We compared body size, sperm production and sexual maturity in Melipona beecheii m...... hiện toàn bộ
An experimental study of bamboo ants in western AmazoniaSpringer Science and Business Media LLC - Tập 53 - Trang 108-114 - 2006
D. W. Davidson, J. A. Arias, J. Mann
Numerous ant taxa naturally inhabit stems of live and dead Guadua bamboo (Bambusoidea, Poaceae) in western Amazonia. In an experiment at the onset of the wet season in Peru’s Manu National Park, we augmented potential nest sites in stems of live bamboo, dead bamboo and dead caña brava (Gynerium sagittatum, another woody grass) at five stations within each of ten bamboo patches and ten control area...... hiện toàn bộ
Social encapsulation of the small hive beetle (Aethina tumida Murray) by European honeybees (Apis mellifera L.)Springer Science and Business Media LLC - Tập 50 - Trang 286-291 - 2003
J. D. Ellis, H. R. Hepburn, A. M. Ellis, P. J. Elzen
European and African subspecies of honeybees (Apis mellifera L.) utilize social encapsulation to contain the small hive beetle (Aethina tumida Murray), a honeybee colony scavenger. Using social encapsulation, African honeybees successfully limit beetle reproduction that can devastate host colonies. In sharp contrast, European honeybees often fail to contain beetles, possibly because their social e...... hiện toàn bộ
Plasticity in expression of fruit fly larval feeding clusters in response to changes in food quality and distributionSpringer Science and Business Media LLC - - Trang 1-11 - 2024
T. T. Shoot, N. Y. Miller, T. A. F. Long
Joining a social group entails a range of possible costs and benefits, with the balance of pros and cons potentially dependent on the specific conditions present in the local environment. In the third-instar stage of fruit fly (Drosophila melanogaster) development, individuals may join together into clusters that can increase access to buried food resources, but this collaboration comes with the p...... hiện toàn bộ
Workers and queens of the European hornetVespa crabro L. have colony-specific cuticular hydrocarbon profiles (Hymenoptera: Vespidae)Springer Science and Business Media LLC - Tập 42 - Trang 45-55 - 1995
D. P. Butts, M. A. Camann, K. E. Espelie
Cuticular hydrocarbons were extracted from sixty individual workers from six colonies ofVespa crabro L. and analyzed by combined gas-chromatography/mass spectrometry. Discriminant analysis of the cuticular hydrocarbon profiles of workers and queens showed that the wasps could be grouped by colony and by caste. Stepwise discriminant analysis selected the components which were weighted most heavily ...... hiện toàn bộ