The Insect Societies Pdf
On the other hand, detailed population genetic investigations about sex biased dispersal and the genetic composition of the actual mating flights i. Social insects should be a showcase for the evolution and consequences for genetic heterogeneity within organisms. The text also deals with gonadal development, along with insect mating behavior. With respect to the assumptions of sex allocation theories for simultaneous hermaphrodites, insect societies look like a promising study system. Group formation, relatedness, and the evolution of multicellularity.
On the evolution of claustral colony founding in ants. Third, split sex ratios do not constitute a permanent loss of the ability to produce one sex at a colony level. Collective action in the fraternal transitions. Comprehensive phylogeny of apid bees reveals the evolutionary origins and antiquity of cleptoparasitism.
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Description of the book The Insect Societies
There is an extreme genetic and material bottleneck at colony foundation, and genetic material from different parent colonies is mixed at mating. Colony sex ratios, conflict between queens and workers, and apparent queen control in the ant Pheidole desertorum. The material bottleneck is less severe, since both queens and workers move to new nests, severity of the genetic bottleneck depends on the number of queens moving to new nests. The evolution of polygyny and polydomy in Formica ants.
To my knowledge sperm cells that would fertilize multiple eggs don't exist, and this may affect anisogamy of superorganisms in ways that are unknown yet. The Major Transitions in Evolution. Colony sex ratios vary with breeding system but not relatedness asymmetry in the facultatively polygynous ant Pheidole pallidula. Furthermore, it demonstrates the roles of general processes that transcend levels of organization on the one hand, and idiosyncratic details on the other, when e. Clearly insect societies have several features that make direct analogies to traditional organisms challenging.
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However, evolution of increased propagule size has occurred repeatedly Debout et al. The uncertain evolution of the sexes. The all-sufficiency of natural selection. The ecological benefits of larger colony size may promote polygyny in ants.
Sex ratio determination by queens and workers in the ant Pheidole desertorum. Restricted gene flow between two social forms in the ant Formica truncorum. Also termites could be an interesting point of comparison here, since in termites both sexes contribute to colony founding, which should favor also large male sizes, i.
Evolution of life-history trade-offs seem easier to conceptualize as organismal traits, evolving like group-selected adaptations, whereas evolution of e. Simultaneously an overlapping discussion goes on as the general concept of organismality is being explored both in biological and philosophical literature. Found in ants, bumble bees and vespine wasps. The most relevant theory and data thus comes from either plants, or sessile marine invertebrates that face similar demands. Honey is certainly high on the list of products made by insects that may be consumed by humans.
Selection on nonrandom fusion of gametes during evolution of anisogamy. In reality, features of many life cycles may be combined such as multiple mating and multiple queens. Features new chapters on the methods and results of studies of insect phylogeny and a new review of insect evolution and biogeography.
The other route to separate sexes, accelerating fitness returns of producing one sex, circuitos integrados ttl pdf have never been demonstrated in insect societies. The superorganismal perspective is further justified by the observation that at the lower level of individuals within colonies social insects break the trade-offs that apply to solitary organisms. Social insect life cycles. Cooperative breeding and monogamy in mammalian societies. The discussed organismal traits and their superorganismal analogs from insect societies.
Insects are well known in various areas of arts and as pleasant to the senses. In summary for this section, it is a considerable task to improve the advanced understanding of social insect sex ratios already achieved.
Found in honeybees, stingless bees, some ants and swarm founding wasps. The ninth chapter covers endocrine influence on reproduction in the male insect. Polydomy in red wood ants. The Major Transitions in Evolution Revisited. The Evolution of life Histories.
In summary for this section, I see anisogamy as a highly potential superorganismal study topic. These bees are European honey bees. Here I take the superorganismal view a step further, and explore what can potentially be gained if we truly accept insect societies as organisms.
Researchers use this concept in biological control, and have been dramatically successful in many programs. The evolution of multiqueen breeding in eusocial lineages with permanent physically differentiated castes. There are other galls that produce dyes.
The other major assumption is the random fusion of gametes. Testing kin selection with sex allocation data in eusocial Hymenoptera.
Furthermore, where sex specific population structures have been shown, they're confounded with factors like propagule sizes and high genetic diversity of the nests Ross et al. In some panels, males are left out for simplicity.
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