Sperm Depletion in Singly Mated Females of the Mexican Fruit Fly (Diptera: Tephritidae)<sup>1</sup>

Thomas, Donald B.; Leal, Sandra N.; Conway, Hugh

doi:10.18474/jes17-40.1

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…The amount of sperm per spermatheca was not quantified but females were ranked as having sperm in 0, 1, 2, or 3 spermathecae. Typically, sperm load is assessed in all 3 spermathecae and the ventral receptacle (Thomas et al 2018), but due to degradation of the ventral receptacle during prolonged storage of samples (up to 44 mo), we examined only the spermathecae.…”

Section: Methodsmentioning

confidence: 99%

“…Anastrepha ludens females have a ventral receptacle and 3 spermathecae, which is typical for Anastrepha species (Martinez and Hernández-Ortiz 1997). Spermathecae are filled and depleted sequentially and the ventral receptacle is the first to receive sperm and the last to be depleted of sperm during egg laying (Thomas et al 2018). If an A. ludens female receives enough sperm to fill all 3 spermathecae in the first copulation, the female may have a lower propensity to remate (Abraham et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Effects of adult-diet modifications on sexual maturation rate, body weight, and quantity of sperm transfer by male Mexican fruit fly (Diptera: Tephritidae)

Hickin¹,

Nadel²,

Carlson

et al. 2023

Journal of Economic Entomology

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Mass-reared sterile Mexican fruit flies (Anastrepha ludens [Loew]) are released along the US–Mexico border to control fruit fly damage and spread. It is more cost effective for the mass rearing program if males mature at a younger age because they can be held for a shorter time at the facility before release. In this study, adult male Mexican fruit fly diets were tested to determine if the current diet used at the mass rearing facility promotes younger mating and optimal sperm transfer compared to other diet formulations. Hydrolyzed yeast presentation methods were examined: an agar-free dry mixture of yeast and sugar (Y+S), yeast embedded in the diet during the agar boiling process (current method used) and sifted dry on the ager gel surface. Methoprene, a juvenile hormone analog was also tested as a supplement to agar gel diets with and without yeast. A greater proportion of males fed Y+S mated 1 day earlier than males fed other diets. Male mating age and diet did not significantly affect the quantity of sperm transferred; however, a non-significantly higher percentage of males fed diets with embedded yeast transferred enough sperm to fill all 3 spermathecae. The results suggest that the current diet used is optimal for mass-rearing the flies and that yeast presentation method has a significant effect on A. ludens male mating age but not on the quantity of sperm transferred to females.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of adult-diet modifications on sexual maturation rate, body weight, and quantity of sperm transfer by male Mexican fruit fly (Diptera: Tephritidae)

Hickin¹,

Nadel²,

Carlson

et al. 2023

Journal of Economic Entomology

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“…First, access to more sperm, especially from multiple males, can increase the number or quality of their offspring [20][21][22]. For example, even females that store sperm may need to replenish depleted sperm stores to maximize their reproductive output [23]. The average fitness of a female's offspring may also be improved by increased genetic diversity from being fathered by multiple males [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Mating competition among females: testing the distinction between natural and sexual selection in an insect

Pärssinen,

Simmons,

Kvarnemo

2024

R. Soc. Open Sci.

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In species where females compete for mates, the male often provides the female with resources in addition to gametes. A recently suggested definition of sexual selection proposed that if females only benefit from additional resources that come with each mating and not additional gametes, female intrasexual competition for mating opportunities would result in natural selection rather than sexual selection. The nuptial gift-giving bushcricket Kawanaphila nartee has dynamic sex roles and has been a textbook example of sexual selection acting on females via mating competition. We investigated whether females of this species gain fitness benefits from nuptial gifts, additional ejaculates or both by controlling the number of matings and whether the female was allowed to consume the nutritious gift (spermatophylax) at mating. We found that egg production per day of life increased with the number of additional matings, both with and without spermatophylax consumption, but consuming the spermatophylax had an additional positive effect on the number of eggs. These effects were particularly strong in females with shorter lifespans. We discuss how the recently suggested definition of sexual selection applies to nuptial-feeding insects and conclude that both natural and sexual selections influence mating competition in K. nartee females.

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Sperm Depletion in Singly Mated Females of the Mexican Fruit Fly (Diptera: Tephritidae)¹

Cited by 2 publications

References 11 publications

Effects of adult-diet modifications on sexual maturation rate, body weight, and quantity of sperm transfer by male Mexican fruit fly (Diptera: Tephritidae)

Effects of adult-diet modifications on sexual maturation rate, body weight, and quantity of sperm transfer by male Mexican fruit fly (Diptera: Tephritidae)

Mating competition among females: testing the distinction between natural and sexual selection in an insect

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Sperm Depletion in Singly Mated Females of the Mexican Fruit Fly (Diptera: Tephritidae)1

Cited by 2 publications

References 11 publications

Effects of adult-diet modifications on sexual maturation rate, body weight, and quantity of sperm transfer by male Mexican fruit fly (Diptera: Tephritidae)

Effects of adult-diet modifications on sexual maturation rate, body weight, and quantity of sperm transfer by male Mexican fruit fly (Diptera: Tephritidae)

Mating competition among females: testing the distinction between natural and sexual selection in an insect

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Sperm Depletion in Singly Mated Females of the Mexican Fruit Fly (Diptera: Tephritidae)¹