1. Animals raised in good environmental conditions are expected to have more resources to invest in immunity than those raised in poor conditions. Variation in immune activity and parasite resistance in response to changes in environmental temperature, population density and food quality have been shown in many invertebrate species. 2. Almost all studies to date have examined the effects of ind...

ABSTRACT Low oxygen or hermetic storage has been successfully used to store several commodities such as corn (Zea mays L.), cowpea (Vigna Savi), cocoa (Theobroma cocao), coffee (Coffea and rice (Oryza sativa L.). However, previous research using for peanut groundnut (Arachis hypogaea L.) had mixed results. Research was conducted determine the effect on aflatoxin contamination, seed germination,...

Abstract Sexual selection is predicted to influence population persistence because skew in male reproductive success may facilitate the purging of mutation load. We manipulated strength sexual populations Indian meal moths, Plodia interpunctella, by adjusting adult sex ratios be either male- or female-biased, leading strong and weak males, respectively. After between 19 22 generations experimen...

Alternative methods of control against different parasites affecting livestock and agriculture are currently being sought. The essential oil Peumus boldus Molina has anthelmintic insecticidal activity the nematode Haemonchus contortus stored cereal insect pests. present study aimed to assess in vitro P. H. (L3) unsheathed Sitophilus zeamais, Tribolium castaneum, Plodia interpunctella. was obtai...