Resultados de investigación

The dataset contains the experimental data associated to the publication “Antagonistic maternal and direct effects of the leptin receptor gene on body weight in pigs”. The phenotype and the LEPR genotype in each individual is given for a series of traits including carcass weight, backfat thickness and loin thickness (sheet 1), weaning weight and number of piglets born alive and weaned (sheet 2), milk fat content (sheet 3), age at first parity (sheet 4), total feed intake (sheet 5) and circulating triglycerides (sheet 6) and total free fatty acids (sheet 7)., Dades primàries associades a un article publicat a la revista Plos One disponible a https://doi.org/10.1371/journal.pone.0246198

We analyzed electroantennogram (EAG) responses of male and female adults of Lobesia botrana (Denis et Schiffermuller) (Lepidoptera: Tortricidae) collected as larvae from the host plants Vitis vinifera L. and Daphne gnidium L. The host-plant odorants tested were either V. vinifera-specific [1-octen-3-ol, (E)-β-farnesene, (E)-4,8-dimethyl-1,3,7-nonatriene], D. gnidium-specific (2-ethyl-hexan-1-ol, benzothiazole, linalool-oxide, ethyl benzanoate), or were shared by both host-plants (linalool, methyl salicylate). Sex pheromone compounds were also tested. Male response to the major pheromone component (E7,Z9-12:Ac) was higher than to any other stimuli, whereas response to the minor pheromone compounds (E7,Z9-12:OH, Z9-12:Ac) was not different from the response to the plant odorants. Female response to pheromone was lower or not different from that of plant odorants. Response to pheromone was higher in males than in females whereas response to plant volatiles was not different between sexes, except for methyl salicylate which elicited higher response in females. (E)-β-farnesene elicited higher EAG responses than several other plant odorants in both sexes. No-significant interaction between host-plant odorant and sex indicated lack of sex specialization for host-plant volatile detection. Larval host-plant affected overall EAG responses (higher amplitude in V. vinifera), however lack of significant interaction between plant volatile and larval host-plant suggested lack of specialization for plant-volatile detection between V. vinifera and D. gnidium individuals., Dades primàries associades a un article publicat a la revista Insects disponible a l'adreça https://doi.org/10.3390/insects10090281

Despite the prevailing use of neonicotinoids in pest control, and their known adverse impact on non-target organisms like honeybees, relatively few studies have explored the effect of sublethal neonicotinoid levels on olfactory responses of pest insects, and thus their potential impact on semiochemical surveillance and control methods, such as monitoring or mating disruption. We recently reported that sublethal doses of the neonicotinoid thiacloprid (TIA) had dramatic effects on sex pheromone release in three tortricid moth species. We present now effects of TIA on pheromone detection and, for the first time, on navigational responses of pest insects to pheromone sources. TIA delayed and reduced the percentage of males responding in the wind tunnel without altering pheromone detection at the antennal level. During navigation along an odor plume, treated males exhibited markedly slower flights and, in general, described narrower flight tracks, with an increased susceptibility to wind-induced drift. All these effects increased in a dose-dependent manner starting at LC0.001 -which would kill just 10 out of 106 individuals- and revealed an especially pronounced sensitivity in one of the species. Our results suggest that minimal neonicotinoid quantities alter chemical communication, and thus could affect the efficacy of semiochemical pest management methods., Dades primàries associades a un article publicat a la revista Scientific Reports disponible a l'adreça https://doi.org/10.1038/s41598-019-44581-w