Inter- and intraspecific sexual discrimination in the flour beetles Tribolium castaneum and Tribolium confusum

Article Abstract:

Inter- and intraspecific sexual discrimination has been studied in Tribolium castaneum (CS) and T. confusum (CF). It appears from the results that both species are sexually indiscriminate, but the CF intraspecific rates were very high, indicating perhaps a lower sexual attractiveness of CF females vs conspecific males. Whether the lack of intraspecific sexual discrimination can be extended to the interspecific level was considered.

Spain, Statistical Data Included, Behavior, Sexual behavior in animals, Animal sexual behavior, Heredity, Beetles, Insect sex attractants, Insect pheromones

---

Cannibalism facilitates the use of a novel environment in the flour beetle, Tribolium castaneum

Article Abstract:

Colonizing a marginal new environment by the flour beetle might be improved by higher rates of cannibalism. Oat flour has been shown to be a stressful environment for the flour beetle, and when a population of these beetles is introduced to this environment, egg cannibalism rates rise. Egg eating helps larvae adapt to this poor environment.

Ecological genetics

---

Properties and natural occurrence of maternal-effect selfish genes (Medea factors) in the Red Flour Beetle, Tribolium castaneum

Article Abstract:

Natural occurrence and properties of maternal-effect selfish genes, or Medea factors, in the Red Flour Beetle, Tribolium castaneum have been studied. The genes were found to be widespread in the wild population of the beetle samples collected in North and South America, Africa, Europe and southeast Asia. They were rare or not found in populations sampled in the Indian subcontinent and Australia. At least four distinct genetic loci were detected in at least two linkage groups that have the Medea pattern of differential mortality of genotypes in maternal families. Each M factor tested had similar properties of zygotic self-rescue and maternal lethality to larvae. However, M factors representing distinct loci did not show cross-rescue.

United States, Genetic aspects

Similar abstracts:

• Abstracts: Body temperature and resting behavior of Greater Snow Goose goslings in the high Arctic. The thermal regime of eggs during laying and incubation in Greater Snow Geese
• Abstracts: Utilization of dimethyl sulfide as a sulfur source with the aid of light by Marinobacterium sp. strain DMS-S1
• Abstracts: Growth characteristics and itraspecies host specificity of a large virus infecting the dinoflagellate Heterocapsa circularisquama
• Abstracts: Identification and expression of benzylsuccinate synthase genes in a toluene-degrading methanogenic consortium
• Abstracts: Quantitative determination of free-DNA uptake in river Bacteria at the single-cell level by in situ rolling-circle amplification

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.