Download or read book Regulation of Worker Honey Bee Reproduction Apis Mellifera L Hymenoptera Apidae microform written by Huarong Lin and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1999 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regulation of Worker Honey Bee Reproduction Apis Mellifera L Hymenoptera Apidae written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regulation of Worker Reproduction in the Honey Bee Apis Mellifera L written by Shelley Hoover and published by . This book was released on 2005 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproductive division of labour is a defining characteristic of eusocial insects. In honey bees, there is normally a single, highly fecund queen, responsible for producing all the brood in the colony. Workers are functionally sterile, developing their latent ovaries only upon queen loss. Workers cannot mate, and are only capable of laying unfertilised, male eggs. I investigated the effects of various chemical, genetic, and nutritional factors on the ovary development of honey bee workers. I demonstrate that queen mandibular pheromone inhibits worker ovary development in caged queenless workers to the same degree as queen extracts. Four newly identified queen pheromone components did not inhibit ovary development alone, nor did they increase the efficacy of the other components. Anarchistic bees are a line developed by recurrent selection in which workers commonly reproduce in queenright colonies. There was no difference between the ovary development of anarchistic or wild type workers in colonies headed by anarchistic or wild type queens, therefore queen type is not responsible for the phenomenon. Anarchistic workers perceive queen pheromones, and anarchistic queens produce an attractive blend, as I found no differences in the retinue response of either worker type to either queen type. There also was no difference in response to queen pheromones at a high dose. At lower doses, however, wild type workers were more inhibited by queen pheromones than were anarchistic workers. Both adult and larval diet influenced adult ovary development, but workers fed high quality diets as adults had higher levels of ovary development than those fed low quality diets as adults regardless of larval diet quality. Nutrition is likely responsible for the seasonal variation observed in ovary development. Disruptive selection resulted in lines of bees with high or low levels of ovary development. High ovary development colonies collected far more pollen than their low line counterparts. Cross-fostering workers from the high line into the low line and vice versa demonstrated that there is an effect of both genotype and rearing environment. These results demonstrate the complex interactions between nutrition, pheromones, genetics, and environment that determine worker reproductive potential.

Download or read book Hormonal Regulation of Division of Labor in Honey Bee Apis Mellifera L Colonies written by Gene Ezia Robinson and published by . This book was released on 1986 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic and Hormonal Regulation of Worker Behavioral Development in Honey Bees written by Tugrul Giray and published by . This book was released on 1998 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Worker Responses To and Queen Production Of Honeybee apis Mellifera L Queen Mandibular Pheromone written by Tanya Pankiw and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1995 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Physiological and Pheromonal Factors Regulating Honey Bee Apis Mellifera L hymenoptera written by Ramesh Reddy Sagili and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation examines some important physiological and pheromonal factors regulating foraging and colony growth in honey bee colonies. The first study analyzed effects of soybean trypsin inhibitor (SBTI) on the development of hypopharyngeal gland, midgut enzyme activity and survival of the honey bee. In this study newly emerged caged bees were fed pollen diets containing three different concentrations of SBTI. Bees fed 1% SBTI had significantly reduced hypopharyngeal gland protein content. This study indicated that nurse bees fed a pollen diet containing at least 1% SBTI would be poor producers of larval food. In the second study nurse bee biosynthesis of brood food was manipulated using SBTI, and the resulting effects on pollen foraging were measured. Experimental colonies were given equal amounts of SBTI treated and untreated pollen. SBTI treatments had significantly lower hypopharyngeal gland protein content than controls. There was no significant difference in the ratio of pollen to non-pollen foragers and pollen load weights collected between the treatments. These results supported the pollen foraging effort predictions generated from the direct independent effects hypothesis. In the third study we tested whether brood pheromone (BP) regulated queen egg laying via modulation of worker-queen interactions and nurse bee rearing behaviors. This experiment had BP and control treatments. Queens in the BP treatment laid greater number of eggs, were fed for a greater amount of time and were less idle. Significantly more time was spent in cell cleaning by the bees in BP treatments. The results suggest that brood pheromone regulated queen egg-laying rate by modulating worker-queen interactions and nurse bee rearing behavior. The final study of this dissertation focused on how dose-dependent BP-mediated division of labor affected the partitioning of non-foraging and foraging work forces and the amount of brood reared. Triple cohort colonies were used and there were three treatments, Low BP, High BP and Control. Low BP treatments had significantly higher ratio of pollen to non-pollen foragers and greater pollen load weights. Low BP treatment bees foraged at a significantly younger age. This study has shown that BP elicits dose-dependent modulation of foraging and brood rearing behaviors.

Download or read book Reproduction and Growth of Temperate evolved Honey Bee Colonies Apis Mellifera L microform written by Lee, Philip Christopher and published by National Library of Canada. This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of the Availability of Pollen in Colonies on the Quality and Quantity of Worker Honey Bees Apis Mellifera L microform written by Heather Rose Mattila and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrastructure of Peritrophic Membrane Development and American Foulbreed Disease Pathogenesis in Larvae of the Worker Honey Bee Apis Mellifera L Hymenoptera Apidae written by Elizabeth J. West Davidson and published by . This book was released on 1971 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dynamics of Reproduction and the Evolution of Mating Behavior in Honey Bees Apis Mellifera L written by Robert E. Page and published by . This book was released on 1980 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Aspects of the Biology of the Honey Bee Apis Mellifera L written by Cyprian Zmarlicki and published by . This book was released on 1963 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ovarian Regulation of Honey Bee Apis Mellifera Foraging Division of Labor written by Adam J. Siegel and published by . This book was released on 2011 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic and Genotypic Components of Foraging and Defensive Behavior in Honey Bee Apis Mellifera L Colonies written by Ernesto Guzman-Novoa and published by . This book was released on 1992 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Genetic Architecture of Reproductive Differences in Workers of Africanized and European Honey Bees Apis Mellifera written by Allie Marie Graham and published by . This book was released on 2009 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Western Honeybee (Apis mellifera) displays a special form of social behavior called eusociality. The evolution of its reproductively specialized castes and social behavior from a solitary ancestor may be explained by the reproductive ground plan hypothesis. This hypothesis predicts a relationship between the variation of ovary size and -activity and social behavior. At the phenotypic level, ovary size has been associated with a whole set of behavioral phenotypes, known as the pollen hoarding syndrome. While many of these phenotypes are potentially influenced by regulatory pathways, involving juvenile hormone and vitellogenin, the exact genetic links between ovary size determination and social behavior are still unknown. To test the generality of the hypothesized genetic linkage between reproductive and social behavior, I investigated the genetic architecture of ovary size differences between Africanized and European honey bees. Two backcrosses of a hybrid queen and Africanized drones that resulted in transgressive worker ovary phenotypes were studied for pleiotropic effects of existing behavioral QTL and potential new QTL with a combination of SNP and microsatellite markers. Analyses show small but significant effects on ovary size for some of the behavioral QTL, as predicted by the reproductive ground plan hypothesis. In addition, I detected two new QTL of major effect on ovary size. I describe potential candidate genes for the QTL and suggest that the detected major and minor effects could reflect genetic control of caste divergence and worker division of labor, respectively, representing two distinct stages of honey bee social evolution that may be connected via female reproductive physiology."--Abstract from author supplied metadata.

Download or read book The Role of Honey Bee Apis Mellifera L Queen Mandibular Gland Pheromone in Pollination Enhancement and Colony Management microform written by Heather Higo and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1994 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterizing Ecdysteroid Titer Profiles and the Functional Role of Ecdysteroids in Adult Worker Honey Bees Apis Mellifera written by Ashton M. Trawinski and published by . This book was released on 2016 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reproductive ground plan hypothesis (RGPH) suggests the coordination of social behaviors in honey bees emerged from pathways that regulate reproduction in solitary species. I examined possible mechanisms of the RGPH in honey bees through analysis of the ecdysteroid profiles of adult worker honey bees (Apis mellifera L.). Ecdysteroids have been thought to play little role in the physiology of adult worker honey bees outside of reproduction because little was known about ecdysteroid production across the lifespan of individual workers. The data reported here reveal that significant and dynamic production of ecdysteroids occurs in adult worker honey bees, typically in the absence of morphological signs of ovarian development, and that queen mandibular pheromone (QMP) regulation of ecdysteroid production is dependent upon social context. Additionally I explored novel roles of ecdysteroids in behavior and physiology. Comparison of observations in the first days of foraging revealed that 20- hydroxyecdysone (20E) treated bees displayed higher levels of foraging activity than vehicle-treated controls, suggesting a novel role for the ecdysteroids present in adult worker bees. I further demonstrated preliminary evidence of a modulatory effect of QMP on hemocytes in worker bees and a potential enhanced recovery from a decrease in hemocytes by treatment of 20E. I also provide evidence that bees held in queenless conditions may have unique immunocompetence profiles, specifically reducing the production of glucose oxidase (GOX). The results presented here provide an updated view of ecdysteroid profiles of adult bees and present an initial survey of the role of ecdysteroids and pheromone exposure in the physiology and behavior of adult worker honey bees.