Insect Life Cycles: Genetics, Evolution and Co-ordination by William E. Bradshaw (auth.), Francis Gilbert PhD (eds.)

By William E. Bradshaw (auth.), Francis Gilbert PhD (eds.)

No overseas Congress of Entomology could now be entire and not using a symposium on insect life-cycles. the most recent Congress, held at Vancouver, BC (Canada), in July 1988, was once no exception, with a symposium at the genetics, evolution, and coordination of insect lifestyles­ cycles equipped by means of invoice Bradshaw and Valerie Brown. the current quantity arose from papers contributed through lots of the audio system on the symposium, including papers from different invited authors. In modifying the e-book, i've been assisted enormously by means of the opposite authors, rather invoice Bradshaw, Val Brown and Fritz Taylor. All participants agreed to referee different chapters, a procedure that labored successfully and successfully: I thank all authors for acting this activity within the face of different calls for on their time. i'd additionally prefer to thank Philip Corbet, John Greenslade, Bryan Clarke, and Gillian Thompson of Springer for his or her support. Nottingham Francis Gilbert January 1990 Contents record of participants ....................................................... xiii part I. Genetics of Life-Cycle qualities creation William E. Bradshaw ................................................. three 1 knowing the Evolution of Insect Life-Cycles: The position of Genetic Analysis.

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Two-week discrete generations are used, as with B culture. The culling involves harvesting all the adults of a D stock, placing them in a cage with desiccant only and sealing that cage atmospherically using a plastic bag. Once most of the flies have died or been incapacitated by desiccation, the plastic bag is removed and food is supplied. The eggs laid on the food are used to start the next generation. The Cs undergo the same procedure, except that desiccant is not added to their cages when they are sealed off.

J Hered 48: 265270 Service PM, Rose MR (1985) Genetic covariation among life history components: the effect of novel environments. Evolution 39: 943-945 Sheridan AK, Frankham R, Jones LP, Rathie KA, Barker JSF (1968) Partitioning of variance and estimation of genetic parameters for various bristle number characters of Drosophila melanogaster. Theor Appl Genet 38: 179-187 Slama K (1985) Pharmacology of insect juvenile hormones. In: Kerkut GA, Gilbert LI (eds) Comprehensive insect physiology, biochemistry and pharmacology.

Rather, the thrust of our research has been to ascertain what Patterns of Pleiotropy in Fitness Characters 41 the bare possibilities are in any system. So long as no investigator had extensively documented antagonistic pleiotropy, in any system, doubting that it existed at all remained defensible. g. Le Bourg et al. 1988). g. Williams 1957; Rose 1983). We now suspect that neither ofthese points of view is tenable (see Kosuda 1985; Mueller 1987; Service et al. 1988), and we are left with the task of unravelling patterns of pleiotropy in particular cases.

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