arrhenotoky


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arrhenotoky

(ˌærəˈnɒtəkɪ)
n
a form of parthenogenesis which produces only male offspring
References in periodicals archive ?
This means that, in addition to normal eggs laid by mated females -which are diploid-, virgin females have the ability to lay eggs too, but obviously they are haploid; the latter give rise to only males, by arrhenotoky, meaning that the offspring is composed exclusively by males.
(2012) Arrhenotoky and oedipal mating in the northern fowl mite (Ornithonyssus sylviarum) (Acari: Gamasida: Macronyssidae).
Sex is determined universally in ants by haplodiploidy and arrhenotoky, the production of paternate diploid females (queens and workers) from fertilised eggs and impaternate haploid males from unfertilised eggs [4].
Conduct library research to learn more about at least three of the following: parthenogenesis, apomixis, gynogenesis, pseudogamy, facultative parthenogenesis, cyclical parthenogenesis, heterogony, thelytoky, arrhenotoky, parthenocarpy, and apomictic parthenogenesis.
According to the mode of sex determination, parthenogenesis is classified in: arrhenotoky (unfertilized eggs develop into males, fertilized ones into females), deuterotoky (unfertilized eggs develop into either sex), and thelytoky (unfertilized eggs develop into females) (Mittwoch 1978, de Meeus et al.
A new all-female scorpion and the first probable case of arrhenotoky in scorpions.
spiniferus reproduces sexually and infrequently by arrhenotoky (Huang et al.
Other authors consider the assumptions of the LMC model unrealistic, doubt that females control sex ratios via arrhenotoky and mention a severe lack of empirical testing for the extensions of LMC theory (Frank 1985, Orzack & Parker 1990, Orzack et al.
In addition, the western flower thrips have 2 reproductive modes: arrhenotoky and sexual reproduction, which are thought to contribute to its rapid establishment, development of insecticide resistance, and adaptation to other unfavorable conditions.
The transition from arrhenotoky to thelytoky is due either to prevention of chromosome reduction during meiosis or through the postmeiotic fusion of 2 haploid mitotic products.
Their rapid population growth is due in part to arrhenotoky or arrhenotokous parthenogenetk reproduction of whiteflies in which unfertilized eggs develop into males and fertilized eggs to females.