| effects of radiation from contaminated soil and moss in fukushima on embryogenesis and egg hatching of the aphid prociphilus oriens. | radiation contaminated soils are widespread around the fukushima daiichi nuclear power plant, and such soils raise concerns over its harmful effect on soil-dwelling organisms. we evaluated the effects of contaminated soil and moss sampled in fukushima on the embryogenesis and hatching of aphid eggs, along with the measurement of the egg exposure dose. cs-137 concentration in soil and moss from fukushima ranged from 2200 to 3300 bq/g and from 64 to 105 bq/g, respectively. eggs of the eriosomatine ... | 2017 | 28992200 |
| frequency-dependent selection acting on the widely fluctuating sex ratio of the aphid prociphilus oriens. | frequency-dependent selection is a fundamental principle of adaptive sex ratio evolution in all sex ratio theories but has rarely been detected in the wild. through long-term censuses, we confirmed large fluctuations in the population sex ratio of the aphid prociphilus oriens and detected frequency-dependent selection acting on these fluctuations. fluctuations in the population sex ratio were partly attributable to climatic factors during the growing season. climatic factors likely affected the ... | 2017 | 28452079 |
| inbreeding depression, increased phenotypic variance, and a trade-off between gonads and appendages in selfed progeny of the aphid prociphilus oriens. | trade-offs are potentially common among two or more traits whose development is dependent on the same resources. to detect genetic trade-offs, the techniques of quantitative genetics, pedigree analyses, and selection experiments have been used. this study demonstrates genetically based trade-offs between gonads and appendages in hatched larvae of the aphid prociphilus oriens by focusing on enlarged variance among the families of selfed progeny. the selfed and outbred families were compared in re ... | 2006 | 16568633 |