Sex Peptides

Miller, James R.; Spencer, Joseph L.; Lentz, Anthony J.; Keller, James E.; Walker, Edward D.; Leykam, Joseph F.

doi:10.1021/bk-1994-0551.ch014

Cited by 8 publications

(2 citation statements)

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“…These post-mating responses of females are of interest because of their potential utility in insect pest control (3,4) and because they appear to be subject to unusually strong natural selection (5)(6)(7)(8)(9). After mating, female insects can become temporarily unattractive, they can show reduced receptivity to mating, and they can increase their rate of egg production (e.g., refs.…”

mentioning

confidence: 99%

The sex peptide of Drosophila melanogaster: Female post-mating responses analyzed by using RNA interference

Chapman

Bangham

Vinti

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

475

491

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Mating induces profound changes in female insect behavior and physiology. In Drosophila melanogaster, mating causes a reduction in sexual receptivity and an elevation in egg production for at least 5 days. Injection of the seminal fluid sex peptide (SP) induces both responses in virgin females, but only for 1-2 days. The role of SP in eliciting the responses to mating remains to be elucidated. Functional redundancy between seminal fluid components may occur. In addition, mating with spermless males results in brief (1-to 2-day) post-mating responses, indicating either that there is a ''sperm effect'' or that sperm act as carriers for SP or other seminal fluid components. Here we used RNA interference to suppress SP expression, to determine whether SP is required to elicit full post-mating responses, the magnitude of responses due to other seminal fluid components, and whether SP accounts for the ''sperm effect.'' Receptivity was higher and egg production lower in females mated to SP knock-down males than in controls. Comparison with virgins showed that the responses were brief. SP is therefore required for normal magnitude and persistence of postmating responses. Sperm transfer and use were normal in mates of SP knock-down males, yet their post-mating responses were briefer than after normal matings, and similar to those reported in mates of spermless son-of-tudor males. The prolonged ''sperm effect'' on female receptivity and egg production is therefore entirely attributable to SP, but sperm are necessary for its occurrence.

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confidence: 99%

The sex peptide of Drosophila melanogaster: Female post-mating responses analyzed by using RNA interference

Chapman

Bangham

Vinti

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

475

491

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“…Because of its dramatic effects on population dynamics, satyrization can be a valuable tool for pest control. This approach was proposed some decades ago [ 1 , 10 ], but only recently has it sparked a renewed interest from the scientific community [ 5 ]. Honma et al [ 11 ] have proposed a framework for the incorporation of satyrization into a sterile insect program.…”

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confidence: 99%

Applying Satyrization to Insect Pest Control: The Case of the Spotted Wing Drosophila, Drosophila suzukii Matsumura

Cerasti,

Mastrantonio,

Dallai

et al. 2023

Insects

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Drosophila suzukii represents one of the major agricultural pests worldwide. The identification of safety and long-lasting tools to suppress its populations is therefore crucial to mitigate the environmental and economic damages due to its occurrence. Here, we explore the possibility of using satyrization as a tool to control the abundance of D. suzukii. By using males of D. melanogaster, we realized courtship tests, spermathecae analysis, and multiple-choice experiments to assess the occurrence and extent of pre- and post-zygotic isolation between the two species, as well as the occurrence of fitness costs in D. suzukii females due to satyrization. Our results showed that: (i) D. melanogaster males successfully courted D. suzukii females; (ii) D. melanogaster males significantly affected the total courtship time of D. suzukii males, which reduced from 22.6% to 6.4%; (iii) D. melanogaster males were able to inseminate D. suzukii and reduce their offspring, inducing a high fitness cost. Reproductive interference occurs at different steps between D. melanogaster and D. suzukii, both alone and in combination with other area-wide control approaches.

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ChemInform Abstract: Sex Peptides. Potentially Important and Useful Regulators of Insect Reproduction

et al. 1994

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Sex Peptides

Cited by 8 publications

References 0 publications

The sex peptide of Drosophila melanogaster: Female post-mating responses analyzed by using RNA interference

The sex peptide of Drosophila melanogaster: Female post-mating responses analyzed by using RNA interference

Applying Satyrization to Insect Pest Control: The Case of the Spotted Wing Drosophila, Drosophila suzukii Matsumura

ChemInform Abstract: Sex Peptides. Potentially Important and Useful Regulators of Insect Reproduction

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