Genetic load in tribolium.

Genetic Homeostasis and Developmental Rate in Tribolium.

ENETIC analysis of a variety of traits in populations of several species has revealed a similar pattern for many traits which are important components of fitness. In general such characters have intermediate optima, and prolonged artificial selection for extreme expression leads to a reduction in fitness. LERNER (1954, 1958) has postulated that one possible mechanism for natural selection in fa...

Expanding the genetic toolkit of Tribolium castaneum

Genetic modification of recombination rate in Tribolium castaneum.

Asymmetrical responses were obtained in a replicated study of 15 generations of two-way selection for recombination rate between the ruby (rb) and jet (j) loci in Tribolium castaneum. Recombination rates in the two replicate high lines increased from an average of 0.22 in the base populations to an average of 0.42 at generation 15. Recombination rate pooled over the 15 generations of selection ...

Genetic structure of Tribolium castaneum (Coleoptera: Tenebrionidae) populations in mills.

The red flour beetle, Tribolium castaneum (Herbst), is primarily found associated with human structures such as wheat and rice mills. Such structures are predicted to be spatially isolated resource patches with frequent population bottlenecks that should influence their genetic structure. Genetic diversity and differentiation among nine populations of T. castaneum collected from wheat and rice...

Tribolium

Not to be confused with.. Tribolium castaneum, the red flour beetle, is often confused with Tenebrio molitor, the common ‘meal worm’ found in pet shops. Although morphologically similar to Tenebrio, Tribolium is much smaller and even easier to breed. That’s why this beetle was used by population geneticists for decades before it was rediscovered as a system in which embryonic development, and o...