Experimental induction and termination of non-reciprocal reproductive incompatibilities in a parahaploid mite

Autor: Marjorie A. Hoy, Denise L. Johanowicz
Rok vydání: 1998
Předmět:
Zdroj: Entomologia Experimentalis et Applicata. 87:51-58
ISSN: 1570-7458
0013-8703
DOI: 10.1046/j.1570-7458.1998.00303.x
Popis: 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.
Databáze: OpenAIRE