J. Steven de Belle

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The heredity of rover/sitter, a naturally occurring polymorphism in the locomotory component of Drosophila melanogaster third instar larval foraging behaviour was analysed by comparing 16 reciprocal crosses made using isogenic rover and sitter parental strains. Results from both male and female data sets indicated that rover/sitter differences have an(More)
Vesicular transporters are required for the storage of all classical and amino acid neurotransmitters in synaptic vesicles. Some neurons lack known vesicular transporters, suggesting additional neurotransmitter systems remain unidentified. Insect mushroom bodies (MBs) are critical for several behaviors, including learning, but the neurotransmitters released(More)
Genetic control of the rover/sitter behavioral polymorphism in Drosophila melanogasterlarvae was localized to the left arm of chromosome 2.Ten independent left and right compound second chromosomes were generated in isogenic rover and sitter strains by gamma irradiation and substituted into 25 different lines. Comparisons were made between lines to(More)
Behavioral plasticity is not an exclusive characteristic of higher organisms. Worms, mollusks, insects, and other invertebrates demonstrate an astonishing degree of flexibility in their daily activities. To the neurobiologist, one distinct advantage of studying these creatures is that they have relatively simple nervous systems that are capable of higher(More)
A recent study of the geotactic response in fruit flies demonstrates how current genomic strategies may be combined with traditional quantitative and classical genetics to identify genes underlying complex behavioral phenotypes. Naturally-occurring variation in behavior seems to arise from mild alterations in pleiotropic genes.
The central complex (CC) is a prominent component of the adult insect brain. In Drosophila melanogaster, mutations which alter CC structure also impair adult locomotion. This has led to the suggestion that the CC functions as a higher organizer of adult locomotor patterns (Strauss and Heisenberg, 1993). In the present study, we describe altered larval(More)
nabling a missile defense capability in Standard Missile-2 (SM-2) Block IVA has entailed, among other changes, incorporating an imaging infrared (IR) seeker into the missile’s guidance system. A signal-to-noise (SNR) model was the first IR model implemented in the APL SM-2 six-degree-of-freedom (6-DOF) simulation, enabling statistical performance(More)
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