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Articles 1 - 3 of 3
Full-Text Articles in Entomology
Inbreeding, Male Diploidy, And Complementary Sex Determination In The Solitary Wasp Euodynerus Foraminatus, Julie Kozaczka Stahlhut
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 …
Organophosphorous Insecticide Contamination In Streams: Insects As Bioindicators, Brian M. Andersen
Organophosphorous Insecticide Contamination In Streams: Insects As Bioindicators, Brian M. Andersen
Dissertations and Theses @ UNI
Organophosphorous (OP) insecticides are widely used around the world to control pests. These insecticides can enter streams and rivers and impact nontarget aquatic organisms by inhibiting acetylcholinesterase (ACE), a nervous system enzyme necessary for normal behavior and survival. However, these contamination events are usually brief and often missed by chemical analyses attempting to detect OP insecticides. Although ACE activity has been used as a bioindicator of OP insecticide exposure in humans and wildlife for many years, few studies have investigated using aquatic insect ACE activity as a potential bioindicator of OP insecticide contamination in streams. This study used the mayfly …
Mosquito Population Dynamics During The Establishment Phase Of A Constructed Desert Wetland, April Newman
Mosquito Population Dynamics During The Establishment Phase Of A Constructed Desert Wetland, April Newman
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Nature Preserve at the Clark County Wetlands Park is a constructed wetland that has the potential to produce new mosquito habitat. This thesis evaluates the potential for the development of a mosquito problem at the newly constructed wetland system by assessing the population dynamics of mosquitoes within the Nature Preserve. Based on data collected from May 2001 through January 2002, I describe fluctuations in mosquito genus and relative abundance during the first summer through winter period of wetland development.