Hostname: page-component-6766d58669-7cz98 Total loading time: 0 Render date: 2026-05-21T15:45:23.377Z Has data issue: false hasContentIssue false

Mating interactions between two biotypes of the whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae) in Australia

Published online by Cambridge University Press:  09 March 2007

P.J. De Barro
Affiliation:
CSIRO Entomology, GPO Box 1700, Canberra, ACT 2601, Australia
P.J. Hart
Affiliation:
CSIRO Entomology, GPO Box 1700, Canberra, ACT 2601, Australia

Abstract

The biological consequences of mating interactions between indigenous and exotic biotypes of Bemisia tabaci (Gennadius) in Australia were studied using a combination of field and laboratory experiments. The key results of the interaction between the B and eastern Australian biotypes were reduced population increase, a marked increase in the proportion of male progeny, fewer eggs produced by females paired with males of different biotype and no difference in the numbers of eggs per unmated female and females paired with males of the same biotype. In addition, there was no change in the proportion of eggs hatching, mixed biotype pairs spent more time courting than single biotype pairs and a low level of hybridization in field cages and small containers was observed. These observations suggest three possibilities. The first is the ‘distracting male hypothesis’ in which mating pairs made up of different biotypes apportion more time to courtship and less time to egg laying than single biotype pairs. The second invokes the ‘single-locus complementary sex determination model’ in which the production of non-viable diploid male zygotes may explain the reduction in eggs laid. The third is cytoplasmic incompatibility between biotypes caused by Wolbachia. The results also suggest that the geographical distribution of clusters of related biotypes both overseas and in Australia may be explained by between-biotype interactions leading to the formation of parapatric populations.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable