ISSN:
1570-7458
Keywords:
rearing temperature
;
Metaseiulus occidentalis
;
parahaploidy
;
incompatibility
;
sex ratio
;
Wolbachia
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Two experiments were conducted to investigate the relationship between rearing temperatures, the presence or absence of Wolbachia endosymbionts, and non-reciprocal reproductive incompatibility in inbred lines of the parahaploid phytoseiid mite Metaseiulus occidentalis (Nesbitt) (Acari: Phytoseiidae). Heat-treated females crossed with infected males reared at room temperature produced few eggs and high proportions of shriveled eggs. No female progeny were produced. The reciprocal cross was normal. A second experiment showed that the incompatible cross from the first experiment could be made compatible if the infected line was heat-treated and those males crossed with the original heat-treated females. Furthermore, a new incompatibility was induced in a formerly compatible cross when the newly heat-treated females were crossed with males from their base colony. Heat-treatment was correlated with the loss of Wolbachia in both experiments. Wolbachia may thus affect non-reciprocal reproductive incompatibility in M. occidentalis, and may produce a unique incompatibility phenotype in this parahaploid species, including both reduced numbers of male progeny and a lack of female progeny.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003207830606
