arrhenotoky


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arrhenotoky

[‚a·rə′näd·ə·kē]
(biology)
Production of only male offspring by a parthenogenetic female.
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However, under the arrhenotoky condition, these numbers were not significantly different between 2, 6, and 12 h or between 24 and 36 h of exposure.
01) and after exposure to 41[degrees]C for up to 12 h, the quantity of first progeny generation larvae was significantly higher under arrhenotoky than under sexual reproduction (2 h: [F.
Under the arrhenotoky condition, the numbers of adults in the first progeny generation were reduced from 2,483 in the control to 929 in the 36 h treatment, and the difference between treatments and the control was highly significant ([F.
At 25[degrees]C and after exposure to 41[degrees]C for up to 12 h, the quantity of first progeny generation adults under arrhenotoky was significantly higher than that under sexual reproduction (25 [degrees]C: [F.
Under the arrhenotoky condition, no significant decline in the survival rate of the progeny occurred after exposure of the parental generation to 41[degrees]C for up to 12 h, but after exposure for 24 and 36 h, the decline was significant ([F.
When parental adults were maintained at 25[degrees]C (control) or exposed to 41[degrees]C for 2 h, the survival rates of the first progeny generation under arrhenotoky were significantly lower than those under sexual reproduction (25[degrees]C: [F.
When adults were exposed to 41[degrees]C for 24 and 36 h under arrhenotoky and sexual reproduction conditions, the numbers of the first progeny generation larvae and adults were reduced by more than one half.
Our results indicated that there was no significant effect in the first progeny generation on the survival rate (from larva to adult), when the parental generation under arrhenotoky conditions was exposed to 41[degrees]C for 12 h or less.
Because the western flower thrips has 2 reproductive modes, arrhenotoky and sexual reproduction, the sex ratio of the first progeny generation was determined only for sexual reproduction.
At 25[degrees]C, the longevity of female adults and the quantity of first progeny generation larvae and adults under arrhenotoky were significant higher than those under sexual reproduction, but the survival rates of the first progeny generation under arrhenotoky were significantly lower than those under sexual reproduction.
Effects of different hours of exposure to 41[degrees]C on the longevity of western flower thrips adult females (parent generation) under arrhenotoky and sexual reproduction conditions.
Effects of different hours of exposure to 41[degrees]C on the numbers of larvae in the first progeny generation of western flower thrips produced by 20 females under arrhenotoky and sexual reproduction conditions.
Effects of exposure to high temperature on Frankliniella occidentalis (Thysanoptera: Thripidae), under Arrhenotoky and sexual reproduction conditions

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