Download or read book Studies on the Development of Instrumental Insemination of Queen Honey Bees Apis Mellifera L Semen Collection Storage and Their Effects on the Onset of Oviposition written by Osman Kaftanoglu and published by . This book was released on 1983 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Instrumental Insemination of Queen Bees written by Otto Mackensen and published by . This book was released on 1970 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preservation of Honey Bee Apis Mellifera L Semen written by Marilène Paillard and published by . This book was released on 2016 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honey bees (Apis mellifera Linnaeus) are critical players in the agricultural industry for food production as they account for the vast majority of insect pollination. In the last decades, however, there have been dramatic losses of honey bee colonies worldwide. Coupled with instrumental insemination, conservation of honey bee sperm is an effective strategy to protect the species and their genetic diversity. Sperm storage is possible at room temperature, but for many mammal species, cryopreservation is the preferred method for the long-term storage of gametes. However, cryopreservation of honey bee drone semen is not optimized. Our overall objective is to develop a method of drone semen cryopreservation, therefore, two experiments were conducted. Hypothesis #1 was that cryopreservation of drone semen is more effective for long-term storage than at above-freezing temperatures. We therefore compared the efficacy based on sperm viability, of two honey bee semen preservation temperatures: frozen (-196°C) and 16°C. After 1 year of storage, frozen sperm viability was higher than at 16°C (76% ± 5% vs. 0%; p 0.05), showing that cryopreservation is necessary to conserve semen in vitro. However, the cryoprotectant used for drone sperm freezing, DMSO (dimethyl sulfoxide), is toxic to queens after instrumental insemination. Hypothesis #2, therefore, was that centrifugation of cryopreserved semen to remove DMSO prior to insemination improves queen fertility. Our results indicate that centrifuging semen does not affect sperm viability (78% ± 3% vs 75% ± 4% viable sperm; p 0.05). After queen insemination, both spermathecae and brood production were evaluated, but the results varied greatly, possibly due to the undesirable mucus present in the semen. Therefore, we cannot yet confirm that centrifugation improves queen health after insemination. Nonetheless, our study confirms that cryopreservation of honey bee sperm is necessary and possible for long-term conservation.
Download or read book Success in the Instrumental Insemination of Queen Bees written by Jan Tyl and published by Výzkumný ústav včelařský, s.r.o.. This book was released on 2018-04-23 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents 1. Introduction 2. Breeding drones 3. Breeding of queen bees 4. Assembly and maintenance of an insemination set 4.1. Preparation of the insemination device 4.2. Description of the insemination device and function of its parts 4.3. Narcotization equipment 5. Sperm collection from drones 6. Instrumental insemination of a queen bee
Download or read book Studies in Sperm Migration in the Queen Honey Bee Apis Mellifera L written by Roderick Lee MacDonald and published by . This book was released on 1964 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Apicultural Abstracts written by and published by . This book was released on 1985 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Instrumental Insemination of Honey Bee Queens written by Harry Hyde Laidlaw and published by Dadant & Sons. This book was released on 1977 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1983-12 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Female Control written by William G. Eberhard and published by Princeton University Press. This book was released on 1996 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence from various fields indicates that such selectivity by females may be the norm rather than the exception. Because most postcopulatory competition among males for paternity is played out within the bodies of females, female behavior, morphology, and physiology probably often influence male success in these contests, Eberhard draws examples from a diversity of organisms, ranging from ctenophores to scorpions, nematodes to frogs, and crickets to humans.
Download or read book Artifical Reproductive Techniques in Honey Bees written by Brandon Kingsley Hopkins and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern agriculture in much of the world is geared toward large acreages of monoculture to maximize food production for an ever-increasing demand. The only highly polylectic species that is capable of pollinating a wide variety of crops and also being managed on such a large commercial scale is the western honey bee (Apis mellifera). Given the importance of honey bees, it is concerning that the agricultural industry has lagged in techniques and technologies that have propelled the rapid advancement of desirable traits in other agricultural species. We are attempting to improve the current state of artificial reproductive techniques (ART) for honey bees. Our work examined sperm cell metabolic energy pathways to better understand how to develop improved semen collection and storage practices. We found that honey bee sperm cells do not use oxidative phosphorylation and are reliant on glycolysis for energy metabolism. With this we tested the long-standing practice of using sugars in saline solution for the collection and instrumental insemination (II) of queens, finding that presence or absence of sugars in the diluent has no effect on the number of spermatozoa present in the queens' spermatheca following II. To further improve collection and insemination there was a need to improve the diluent used for collection and to improve storage conditions. We examined buffers and antibiotics for free radical production under laboratory lighting conditions, selected a suite that had the lowest free radical production, and tested those at different concentrations for cytotoxicity. Above-freezing storage of semen was tested including a diluent-free storage system in which semen was stored and capable of fertilizing ova after 439 days. We demonstrated the potential for sequential backcrosses using cryopreserved semen, and then collected semen from Old World populations in Italy, Slovenia, and Republic of Georgia. Collections of cryopreserved semen in the Republic of Georgia are being used to reintroduce the subspecies A.m. caucasica into the U.S., during this process we show the stability of cryopreserved semen during the two-year period it has been frozen.
Download or read book Neurobiology of Chemical Communication written by Carla Mucignat-Caretta and published by CRC Press. This book was released on 2014-02-14 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intraspecific communication involves the activation of chemoreceptors and subsequent activation of different central areas that coordinate the responses of the entire organism—ranging from behavioral modification to modulation of hormones release. Animals emit intraspecific chemical signals, often referred to as pheromones, to advertise their presence to members of the same species and to regulate interactions aimed at establishing and regulating social and reproductive bonds. In the last two decades, scientists have developed a greater understanding of the neural processing of these chemical signals. Neurobiology of Chemical Communication explores the role of the chemical senses in mediating intraspecific communication. Providing an up-to-date outline of the most recent advances in the field, it presents data from laboratory and wild species, ranging from invertebrates to vertebrates, from insects to humans. The book examines the structure, anatomy, electrophysiology, and molecular biology of pheromones. It discusses how chemical signals work on different mammalian and non-mammalian species and includes chapters on insects, Drosophila, honey bees, amphibians, mice, tigers, and cattle. It also explores the controversial topic of human pheromones. An essential reference for students and researchers in the field of pheromones, this is also an ideal resource for those working on behavioral phenotyping of animal models and persons interested in the biology/ecology of wild and domestic species.
Download or read book The Instrumental Insemination of the Queen Bee written by and published by . This book was released on 1989 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Breeding Focus 2021 Improving Reproduction written by Susanne Hermesch and published by . This book was released on 2021-05-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Breeding Focus 2021 - Improving reproduction" is the fourth workshop in the series. The Breeding Focus series was developed to provide an opportunity for exchange between industry and research across a number of agricultural industry sectors. Reproduction is a main economic driver for profitability and genetic gain. Successful reproduction is a complex characteristic comprising the formation of reproductive cells, successful mating and fertilisation, embryonic and fetal growth and eventually a successful birthing event. In livestock species, reproduction traits have mostly low heritabilities, which makes it challenging to improve reproduction as part of a multiple trait breeding objective. The complexity arises not just from the cascade of processes required to result in successful reproduction, but the relevant traits are different in males and females and they are influenced through health and fitness, nutrition, climate and other environmental and management factors.
Download or read book Biogeography and Taxonomy of Honeybees written by Friedrich Ruttner and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honeybees are as small as flies or as large as hornets, nesting in nar row cavities of trees and rocks or in the open on large limbs of trees 30 m above ground. They occur in tropical zones and in the forests of the Ural mountains, they survive seven months of winter and even longer periods of drought and heat. Historically, they lived through a extended time of stagnation in the tropics from the mid-Tertiary, but then experienced an explosive evolution during the Pleistocene, re sulting in the conquest of huge new territories and the origin of two dozen subspecies in Apis mellifera. This vast geographic and ecologic diversification of the genus Apis was accompanied by a rich morphological variation, less on the level of species than at the lowest rank, the subspecies level. Variation being exclusively of a quantitative kind at this first step of speciation, tradi tional descriptive methods of systematics proved to be unsatisfactory, and honeybee taxonomy finally ended up in a confusing multitude of inadequately described units. Effective methods of morphometric-sta tistical analysis of honeybee popUlations, centered on limited areas, have been developed during the last decades. Only the numerical characterization of the populations, together with the description of behavior, shows the true geographic variability and will end current generalizations and convenient stereotypes.
Download or read book Beekeeping in California written by Eric C. Mussen and published by . This book was released on 1987 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Rasputin Effect When Commensals and Symbionts Become Parasitic written by Christon J. Hurst and published by Springer. This book was released on 2016-07-05 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on those instances when benign and even beneficial relationships between microbes and their hosts opportunistically change and become detrimental toward the host. It examines the triggering events which can factor into these changes, such as reduction in the host’s capacity for mounting an effective defensive response due to nutritional deprivation, coinfections and seemingly subtle environmental influences like the amounts of sunlight, temperature, and either water or air quality. The effects of environmental changes can be compounded when they necessitate a physical relocation of species, in turn changing the probability of encounter between microbe and host. The change also can result when pathogens, including virus species, either have modified the opportunist or attacked the host’s protective natural microflora. The authors discuss these opportunistic interactions and assess their outcomes in both aquatic as well as terrestrial ecosystems, highlighting the impact on plant, invertebrate and vertebrate hosts.
Download or read book The Biology of the Honey Bee written by Mark L. Winston and published by Harvard University Press. This book was released on 1991-04-01 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: From ancient cave paintings of honey bee nests to modern science’s richly diversified investigation of honey bee biology and its applications, the human imagination has long been captivated by the mysterious and highly sophisticated behavior of this paragon among insect societies. In the first broad treatment of honey bee biology to appear in decades, Mark Winston provides rare access to the world of this extraordinary insect. In a bright and engaging style, Winston probes the dynamics of the honey bee’s social organization. He recreates for us the complex infrastructure of the nest, describes the highly specialized behavior of workers, queens, and drones, and examines in detail the remarkable ability of the honey bee colony to regulate its functions according to events within and outside the nest. Winston integrates into his discussion the results of recent studies, bringing into sharp focus topics of current bee research. These include the exquisite architecture of the nest and its relation to bee physiology; the intricate division of labor and the relevance of a temporal caste structure to efficient functioning of the colony; and, finally, the life-death struggles of swarming, supersedure, and mating that mark the reproductive cycle of the honey bee. The Biology of the Honey Bee not only reviews the basic aspects of social behavior, ecology, anatomy, physiology, and genetics, it also summarizes major controversies in contemporary honey bee research, such as the importance of kin recognition in the evolution of social behavior and the role of the well-known dance language in honey bee communication. Thorough, well-illustrated, and lucidly written, this book will for many years be a valuable resource for scholars, students, and beekeepers alike.
