Salim Tingek

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Specialized relationships with bacteria often allow animals to exploit a new diet by providing a novel set of metabolic capabilities. Bees are a monophyletic group of Hymenoptera that transitioned to a completely herbivorous diet from the carnivorous diet of their wasp ancestors. Recent culture-independent studies suggest that a set of distinctive bacterial(More)
The existence of behavioral traits connected to defense against pathogens manifests the importance of pathogens in the evolution of social insects. However, very little is known about how pathogen pressure has affected the molecular evolution of genes involved in their innate immune system. We have studied the sequence evolution of several immune genes in(More)
Our understanding of the impact of recombination, mutation, genetic drift, and selection on the evolution of a single gene is still limited. Here we investigate the impact of all these evolutionary forces at the complementary sex determiner (csd) gene that evolves under a balancing mode of selection. Females are heterozygous at the csd gene and males are(More)
Workers of six colonies of the giant honeybee Apis dorsata from Sabah, Malaysia (five colonies) and Java (one colony) were genotyped using single locus DNA fingerprinting. The colonies from Sabah nested in colony aggregations of 5 and 28 nests respectively on two trees. Three DNA microsatellite loci (A14, A76, A88) with a total of 27 alleles provided(More)
The giant Asian honeybee (Apis dorsata), like all other members of the genus Apis, has a complex mating system in which the queens and males (drones) mate at spatially defined drone congregation areas (DCAs). Here, we studied the temporal genetic structure of a DCA of A. dorsata over an 8-day time window by the genotyping of sampled drones with(More)
Based on the ovarian ground-plan hypothesis (West-Eberhard 1987; West-Eberhard 1996) the reproductive ground-plan hypothesis of social evolution has recently been proposed as a theoretical framework to understand social evolution in honeybees (Amdam et al. 2004, 2006). The reproductive ground-plan hypothesis seeks to explain the evolution of honeybee social(More)
During social evolution, the ovary size of reproductively specialized honey bee queens has dramatically increased while their workers have evolved much smaller ovaries. However, worker division of labor and reproductive competition under queenless conditions are influenced by worker ovary size. Little comparative information on ovary size exists in the(More)
Reciprocal transfer of sealed drone brood between colonies ofApis cerana andApis koschevnikovi was successful and resulted in four colonies (two of each species) with a mixed drone population. Flights ofApis cerana drones occurred between 14.00 and 16.15 regardless whether they were in a conspecific or alien colony.Apis koschevnikovi drones also flew at(More)
Jun-ichi Takahashia,b, Sulaiman B. Hashimc, Salim Tingekd, Isamu Shimizua, Tadaharu Yoshidab a Center for Ecological Research, Kyoto University, Otsu, Shiga 520-2113, Japan b Honeybee Science Research Center, Tamagawa University, Machida, Tokyo 194-8610, Japan c Department of Agriculture, Jalan Damai, 35000 Tapah, Perak, Malaysia d Agriculture Research(More)