Field studies over 3 yr demonstrated that overwintering populations of the Colorado potato beetle in upstate New York and on Long Island are composed of adults from both the first and second summer generations. The two populations from the climatically different regions differ in their responses to environmental factors that influence voltinism. The critical photoperiod for aestival diapause in...

Determining relative strengths of trophic links is critical for ranking predators for conservation biological control. Molecular gut-content analysis enables ranking by incidence of prey remains in the gut, but differential digestive rates bias such rankings toward predators with slower rates. This bias can be reduced by indexing each predator’s half-life to that of the middle-most half-life in...

b-Leptinotarsin-h, purified from the hemolymph of the beetle Leptinotarsa haldemani, is a potent (w1 nM) neuroactive protein that rapidly (few seconds) stimulates Ca influx and neurotransmitter release. Our goals were to further characterize bleptinotarsin-h and to test the hypothesis that it stimulates Ca influx through presynaptic Ca channels. Analysis of partial amino acid sequences revealed...

Pojava rezistentnosti na insekticide kod kukaca ozbiljan je i rastući problem u poljoprivrednoj proizvodnji. Razvijanjem učinkovitih programa praćenja omogućava se rano otkrivanje te razvoj pravovremena implementacija antirezistentnih strategija. Polimorfizam pojedinačnog nukleotida, engl. Syngle Nucleotide Polymorphisms (SNPs), novija metoda analize cijelog genoma utvrđivanjem polimorfizma poj...