Sperm storage and viability within females of Euscepes postfasciatus: Effect of irradiation on sperm abundance and viability within female

Kumano, Norikuni; Haraguchi, Dai; Kohama, Tsuguo

doi:10.1016/j.jinsphys.2009.05.010

Cited by 10 publications

(7 citation statements)

References 34 publications

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“…catalase, glutathione-S-transferase and superoxide dismutase) that protect gametes against reactive oxygen species (Collins et al 2004, Kumano et al 2009, den Boer et al 2009). In addition, genes expressed in the spermatheca of Drosophila simulans are involved in controlling the viscosity of the internal milieu of the spermathecal lumen, as well as in sugar metabolism to provide energy sources to the gametes and in antifungal defence (Prokupek et al 2008).…”

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confidence: 99%

Morphological and morphometrical assessment of spermathecae of Aedes aegypti females

Pascini

Ramalho-Ortigão

Martins

2012

Mem. Inst. Oswaldo Cruz

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confidence: 99%

Morphological and morphometrical assessment of spermathecae of Aedes aegypti females

Pascini

Ramalho-Ortigão

Martins

2012

Mem. Inst. Oswaldo Cruz

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“…Therefore, we concluded that the greatly reduced fertilization ability of partially sterilized weevils did not recover for at least 2 weeks after irradiation. The reduction of progeny in the second trial was not attributable to the mortality of irradiated sperm, because irradiation does not affect sperm mortality for 18 days after irradiation in this weevil (Kumano et al., 2009b).…”

Section: Discussionmentioning

confidence: 84%

Evaluation of partial sterility in mating performance and reproduction of the West Indian sweetpotato weevil, Euscepes postfasciatus

Kumano

Kuriwada

Shiromoto

et al. 2010

Entomologia Exp Applicata

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The sterile insect technique (SIT) is based on population and behavioral ecology and is widely used to suppress or eradicate target pest insect populations. The effectiveness of SIT depends on the ability of the released sterile males to mate with and inseminate wild females. The use of gamma-radiation to induce sterility is, however, associated with negative impacts not only on reproductive cells but also on somatic cells. Consequently, irradiation for sterilization diminishes mating performance over time. In this study, we evaluated the balance between the irradiation dose and both fertility and mating propensity in Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae) for 22 days following irradiation. The mating propensity of males irradiated with a 150-Gy dose, as currently used to induce complete sterility of E. postfasciatus in the SIT program in Okinawa Prefecture, was equal to that of non-irradiated weevils for up to 6 days, and the mating propensity of males irradiated with a dose of 125 Gy was equal to that of non-irradiated weevils for twice this period (12 days). The fertilization ability of weevils irradiated with a dose of 125 Gy was reduced by 4.6% in males and 0.6% in females, compared to the potential fertilization ability. We also discuss the possibility of the application of partially sterilized insects in eradication programs.

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“…It is well known that the basic mechanism underlying radiation-induced sterility is dominant lethal DNA damage in reproductive cells ( Robinson 2002 , Dyck et al 2005 , Kumano et al 2009 ). In this study, a metabolomic analysis was carried out across untreated and 40-Gy-treated male M. alternatus to get more information about the mechanism of RISIT.…”

Section: Discussionmentioning

confidence: 99%

Radiation-Induced Metabolomic Changes in Sterile Male Μοnochamus alternatus (Coleoptera: Cerambycidae)

Wang

Zhang

et al. 2014

Journal of Insect Science

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Radiation-induced sterile insect technique is a biologically based, environment-friendly method for the suppression or eradication of a number of insect pests. Although the basic mechanisms underlying the technology have been well studied, little is known about the cell responses in organisms. Characterization of the metabolic shift associated with radiation exposure in sterile insects would be helpful for understanding the detailed mechanism underlying this technique and promote its practical application. In this article, a metabolomic study was performed to characterize the global metabolic changes induced by radiation using untreated and 40 Gy 60 Coγ-irradiated testes of Japanese pine sawyer, Monochamus alternatus Hope . Differential metabolites were detected and tentatively identified. Many key metabolites in glycolysis and the tricarboxylic acid cycle, as well as most fatty and amino acids, were elevated in irradiated male M. alternatus , presumably resulting from depression of glycolysis and the tricarboxylic acid cycle, each of which are important pathways for energy generation Adenosine Triphosphate (ATP) in insect spermatozoa. The findings in this article will contribute to our knowledge of the characteristic metabolic changes associated with irradiation sterility and understand the molecular mechanisms underlying radiation-induced sterile insect technique.

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Sperm storage and viability within females of Euscepes postfasciatus: Effect of irradiation on sperm abundance and viability within female

Cited by 10 publications

References 34 publications

Morphological and morphometrical assessment of spermathecae of Aedes aegypti females

Morphological and morphometrical assessment of spermathecae of Aedes aegypti females

Evaluation of partial sterility in mating performance and reproduction of the West Indian sweetpotato weevil, Euscepes postfasciatus

Radiation-Induced Metabolomic Changes in Sterile Male Μοnochamus alternatus (Coleoptera: Cerambycidae)

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