Sharp decline in male fertility in F2 hybrids of the female-heterogametic silk moth Bombyx.

ABSTRACT: Sexual selection drives rapid evolution of morphological, physiological, and behavioral traits, especially in males, and it may also drive the rapid evolution of hybrid male sterility. Indeed, the faster male theory of speciation was once viewed as a major cause of Haldane's rule in male-heterogametic XY taxa, but is increasingly being replaced by the genetic conflict hypothesis partly because it cannot explain the faster evolution of hybrid female sterility in female-heterogametic ZW taxa. The theory nonetheless predicts that there should be more genes for hybrid male sterility than for hybrid female sterility even in such taxa, but this remains untested. Thus, finding evidence for the faster male theory of reproductive isolation beyond the F1 generation in ZW systems still represents a c

SUBMITTER: Matsukawa K 

PROVIDER: S-EPMC11538408 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature