Pyriproxyfen, a juvenoid hormone analog, does not induce male production in parthenogenetic lineages of Eucypris virens (Crustacea: Ostracoda)

Genetic structure of Austrian and Italian populations of Limnocythere inopinata (Crustacea, Ostracoda): a potential case of post-glacial parthenogenetic invader?

Several hypotheses were proposed to account for geographic parthenogenesis that is the disjointed distribution of a species’ sexual and asexual forms. In the areas affected by glaciations the parthenogenetic forms would have had ecological success and hybridization and polyploidy would have been the driving forces in their success. Limnocythere inopinata is well-represented in Quaternary non-ma...

Arthropods: Crustacea – Ostracoda and Amphpoda

Effects of a juvenile hormone analog, pyriproxyfen, on Thrips tabaci (Thysanoptera: Thripidae).

Effects of a juvenile hormone analog, pyriproxyfen, on various developmental stadia of the onion thrips, Thrips tabaci Lindeman, were determined on cabbage leaves in the laboratory. Pyriproxyfen was applied at 0.064 or 0.128 g AI liter(-1) on leaves (residual contact-ingestion), thrips (direct contact) and leaf-thrips (residue contact-ingestion-direct contact). Pyriproxyfen did not have any sig...

how does lead induce male infertility?

an important part of male infertility of unknown etiology may be attributed to various environmental and occupational exposures to toxic substances, such as lead. the reproductive effects of lead are complex and appear to involve multiple pathways, not all of which are fully understood. it is still unclear, for example, if male reproductive issues in lead-exposed persons are mostly related to t...

Insecticidal juvenile hormone analogs stimulate the production of male offspring in the crustacean Daphnia magna.

Juvenile hormone analogs (JHAs) represent a class of insecticides that were designed specifically to disrupt endocrine-regulated processes relatively unique to insects. Recently we demonstrated that the crustacean juvenoid hormone methyl farnesoate programs oocytes of the crustacean Daphnia magna to develop into males. We hypothesized that insecticidal JHAs might mimic the action of methyl farn...