Genetics and Genomics Commons^™

Inbreeding, Male Diploidy, And Complementary Sex Determination In The Solitary Wasp Euodynerus Foraminatus, Julie Kozaczka Stahlhut

Dissertations

In the insect order Hymenoptera, which includes wasps, bees, and ants, females normally develop from fertilized eggs and are diploid, while males develop from unfertilized eggs and are haploid. Underlying mechanisms of sex determination are more complex and vary among different hymenopteran taxa. One such method is single-locus complementary sex determination, or sl-CSD, in which sex is determined by a single gene locus with many alleles. In species with sl-CSD, diploid individuals that are heterozygous at the sex locus develop as normal females and hemizygous (haploid) individuals as normal males, but diploids homozygous at the sex locus will also develop …

Registration Of N547 Maize Germplasm Line, Nora E. D'Croz-Mason, John E. Foster, Stephen C. Mason

Department of Entomology: Faculty Publications

N547 germplasm line (Reg. no. GP-367, PI 615526) was released by the Agriculture Research Division, Institute of Agriculture and Natural Resources, University of Nebraska, on 24 Aug. 1999. N547 is a yellow endosperm maize inbred germplasm with resistance to stalk and shank tunneling damage caused by the second generation of the European corn borer (ECB) Ostrinia nubilalis (Hubner).

N547 was derived by selfing a selected full-sib family from MBITA, a tropical population developed by CIMMYT, Mexico. MBITA was created to recombine sources of resistance to temperate and subtropical stalk borers. These insects included ECB, southwestern corn borer (SWCB) Diatraea grandiosella …

Life History Response Of Mediterranean Fruit Flies To Dietary Restriction, James R. Carey, Pablo Liedo, Lawrence G. Harshman, Ying Zhang, Hans-Georg Müller, Linda Partridge, Jane-Ling Wang

Lawrence G. Harshman Publications

The purpose of this study was to investigate medfly longevity and reproduction across a broad spectrum of diet restriction using a protocol similar to those applied in most rodent studies. Age-specific reproduction and age of death were monitored for 1,200 adult males and 1,200 females, each individually maintained on one of 12 diets from ad libitum to 30% of ad libitum. Diet was provided in a fixed volume of solution that was fully consumed each day, ensuring control of total nutrient consumption for every fly. Contrary to expectation and precedence, increased longevity was not observed at any level of …