Reproductive Dominance Interactions and Colony Development in Bumble Bees (Bombus Latreille; Hymenoptera: Apidae). PDF Download
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Author: Nelson Pomeroy
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
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Author: Nelson Pomeroy
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
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Author: Rosalind R. James
Publisher: Oxford University Press
ISBN: 0195316959
Category : Nature
Languages : en
Pages : 247
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This book discusses the interplay among bees, agriculture and the environment. Both managed and wild bees are critical for successful pollination of numerous fruit, vegetable, oilseed and legume seed crops and are considered here. So is treatment of how bees also impact the agro-ecosystem in ways beyond simple pollination, such as by transporting pollen from genetically modified plants and by enhancing biological control strategies. The principles and examples are international. The concept is in line with current thinking of pollination as an important ecological process, and an understanding of agriculture as disturbance ecology.
Author: Wolf Engels
Publisher: Springer Science & Business Media
ISBN: 3642744907
Category : Science
Languages : en
Pages : 265
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Evolution of Castes in Insects l BERNHARD RENSCH The evolution of organisms in the succession of generations has been primarilly achieved through the appearance of new hereditary variants with minor deviations along with the development of stable structures and functions. Harmful mutants were eradicated either immediately or in the subsequent generations through the process of natural selection while unharmful or advantageous ones usually survived. As this process continued, many new races and species developed which possessed structures and functions of a rational nature and which became increasingly independent from their environment. These evolutionary tendencies were also promoted through either geographical, ecological, physiological or genetical isolation of populations. In some phylogenetic lines, there occurred an increase in the number of cells due to additional cellular divisions in the morphogenesis of structures. This opened up the possibility for the development of the division of labour within cellular groups leading to more complicated and consequently more successful functions of tissues and organs. A further advancement in the adaptation of a species to its environment was made possible through specialization for certain functions of whole individuals or groups of individuals.
Author: Nhi Cao
Publisher:
ISBN:
Category :
Languages : en
Pages : 135
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Social insect colonies are complex systems with emergent properties that arise from the cooperation and interaction amongst individuals within colonies. By dividing reproduction and physical labor amongst them, individuals contribute to the growth and ecological success of their colonies, a success that is greater than individuals could achieve on their own. A key characteristic of social insects is a division of labor amongst workers that is determined primarily either by age, morphology, or dominance. Social insects are considered one of the most ecologically successful groups of organisms on earth. Colony life cycles include: 1) growth, in which workers are produced, 2) reproduction, in which queens and males with reproductive capabilities are produced, and 3) senescence. In life history theory, phenotypic plasticity (i.e. a change in phenotype in response to an environmental change), allows organisms to adjust and optimize fitness in response the change in environments. Central to life history theory is the idea that traits have costs and benefits. Using an energetics framework that considers the costs and benefits of traits contributes to our understanding as to why organisms exhibit the sets of traits that they have within their ecological environments. Using the annual bumble bee Bombus impatiens, my dissertation investigates the effects of resource availability on worker production and on the relative allocation of energy towards growth and reproduction within colonies. Bumble bees have a morphological division of labor and concomitantly, they show large intra-colony size variation amongst workers. Because body size is an important life history trait, I also examined the costs and benefits of producing various sized workers. Lastly, I examined the association among worker body size, metabolic rate (a measure of maintenance costs), and lifespan.
Author:
Publisher:
ISBN:
Category : Bee culture
Languages : en
Pages : 812
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Author: Ian G. Burns
Publisher:
ISBN:
Category :
Languages : en
Pages : 432
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 532
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Author: Elaine Evans
Publisher:
ISBN:
Category : Bees
Languages : en
Pages : 76
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Book Description
Methods for rearing native bumblebee, Bombus impatiens, in confinement. The methods can be used to rear bumblebee colonies for backyard garden pollination, for commercial hot-house pollination of tomatoes, for cranberry and blueberry growers, and to help with native prairie restoration projects.
Author: Diane M. Thomson
Publisher:
ISBN:
Category : Biological invasions
Languages : en
Pages : 248
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Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 816
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