Female Heliothis subflexa (Lepidoptera: Noctuidae) Sex Pheromone: Chemistry and Congeneric Comparisons
Chemical, chromatographic, and mass spectral analyses of the heptane extracts of excised female Heliothis subflexa ovipositors showed that the females produce 11 compounds that are analgous to known…
Insect radiosensitivity: dose curves and dose-fractionation studies of dominant lethal mutations in the mature sperm of 4 insect species.
Movement of eupyrene sperm bundles from the testis and storage in the ductus ejaculatoris duplex of the male pink bollworm: effects of age, strain, irradiation, and light
When pink bollworms, Pectinophora gossypiella (Saunders), were maintained in a 12:12 light-dark regimen, the eupyrene sperm bundles showed a pronounced rhythm in descending from the testis to the duplex region, and the same rhythm was maintained in severed abdomens.
Cytogenetics of inherited partial sterility in three generations of the large milkweed bug as related to holokinetic chromosomes
The transmission of complex chromosome rearrangements and fragments for 3 generations of outcrossing correlates with the persistence of sterility in this species possessing holokinetic chromosomes.
Chromosomal Fragments Transmitted through Three Generations in Oncopeltus (Hemiptera)
The persistence of these fragments through numerous generations of cells confirmed the holokinetic nature of the milkweed bug chromosomes.
Genetic Methods for the Control of Lepidopteran Species: Status and Potential
- L. Lachance
- 17 March 2018
Chromosome Studies in Three Species of Diptera (Muscidae and Hypodermatidae)
- L. Lachance
The squash technique was used on larval “brains” and testes from pupae and newly emerged males to study the chromosome number and chromosome morphology of Diptera.
EFFECTS OF INITIAL HARVEST DATE ON DRY MATTER YIELD, IN VITRO DRY MATTER DIGESTIBILITY AND PROTEIN IN TIMOTHY, TALL FESCUE, REED CANARYGRASS AND KENTUCKY BLUEGRASS
With the exception of reed canarygrass, delaying the initial cut resulted in continued increases in total annual dry matter (DM) yield, significant increases in tot...
The operational feasibility of genetic methods for control of insects of medical and veterinary importance.
Sperm production and transfer by Heliothis virescens, H. subflexa, and the sterile hybrid males
Sterile hybrids from interspecific crosses between Heliothis virescens (F.) and H. subflexa (Guenee) produced as many sperm bundles in their testes as did the parent species. Also, the ratio of…