Consequences of inbreeding for the cowpea seed beetle, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae)

Content Provider	Semantic Scholar
Author	Tran, Bruno M. D. Credland, Peter F.
Copyright Year	1995
Abstract	Inbreeding is said to reduce vigour and fitness. It may also determine how a population responds to selection. Local populations of Callosobruchus maculatus, the cowpea seed beetle, are established annually from small numbers of founders and the species has been distributed to many parts of the world where isolated populations may have been founded by very small numbers of individuals. After more than 20 generations of inbreeding, inbred lines have been shown to diverge from a common ancestral stock in similar directions with respect of some variables such as developmental speed, but haphazardly in respect of other parameters such as male weight. The respective roles of drift and of selection as effective evolutionary forces in inbred lines are discussed in the light of these results. It is argued that some intraspecific differences in C. maculatus may be explained as a product of periodic inbreeding, but that the process does not impair the ability to adapt to local conditions so contributing to the status of the species as a pest of international importance.
Starting Page	483
Ending Page	503
Page Count	21
File Format	PDF HTM / HTML
DOI	10.1111/j.1095-8312.1995.tb01106.x
Alternate Webpage(s)	http://www.bmdtran.net/prof/CV/Tran%20&%20Credland,%2095.pdf
Alternate Webpage(s)	https://doi.org/10.1111/j.1095-8312.1995.tb01106.x
Volume Number	56
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article