Span of Female Emergence and Male Sperm Depletion in the Female-biased, Quasi-gregarious Parasitoid, Pachycrepoideus vindemiae (Hymenoptera: Pteromalidae)

Nadel, Hannah; Luck, Robert F.

doi:10.1093/aesa/78.3.410

Cited by 76 publications

(60 citation statements)

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“…PSR males were equally successful as standard males in obtaining mates under conditions of direct competition. As in Nasonia (Werren and Van den Assem, 1986), sperm depletion has been reported from a number of parasitoid wasp species (Sekhar, 1957;Hall, 1960, 1961;Whiting, 1961;Wilson, 1961;Wiackowski, 1962;Wilkes, 1965;Gordh and DeBach, 1976;Nadel and Luck, 1985;Van den Assem et al, 1989). Similarly to the present study, Barrass (1961), Gordh and DeBach (1976) and Nadel and Luck (1985) observed that males continued courting and copulating with females even when they no longer transmitted sperm.…”

Section: Discussionsupporting

confidence: 86%

“…Beukeboom, unpublished). Nadel and Luck (1985) have reported similar observations. Thus, if it is assumed that all females had used up all or most available sperm before they died and that all sperm survived until used, then the total number of fertilized eggs laid is a good approximation of the ejaculate size of the male.…”

Section: Sperm Competitionsupporting

confidence: 64%

“…The average female fertilized approximately 750 eggs. The pattern at which ejaculate sizes decreased in successive matings is unknown, but a linear function of sperm depletion, as was shown for Pachycrepoideus vindemiae (Nadel and Luck, 1985), may be a good approximation. Combining these two values yields an estimated 11 250 (30 females x 375 sperm) sperm as a minimum estimate for lifetime sperm production in Nasonia males.…”

Section: Discussionmentioning

confidence: 94%

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Phenotypic fitness effects of the selfish B chromosome, paternal sex ratio (PSR) in the parasitic waspNasonia vitripennis

Beukeboom

1994

Evol Ecol

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Phenotypic fitness effects of the selfish B chromosome, paternal sex ratio (PSR) in the parasitic wasp Nasonia vitripennis Beukeboom, Leo W. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. (PSR) is an extreme example of a parasitic B chromosome in the parasitoid wasp Nasonia vitripennis. PSR is transmitted through the sperm of carrier males and destroys the other paternal chromosomes in early fertilized eggs. PSR disrupts the normal haplodiploid sex determination in this wasp by converting diploid (female) eggs into haploid (male) eggs that bear PSR. In this study I compare a number of phenotypic fitness aspects of PSR and standard (non-PSR) males. In general, PSR males were as fit as standard males. No significant differences were found in longevity (with one exception), ability to compete for mates and sperm depletion rates. PSR males produced 11-22% larger family sizes and developed slightly faster than standard males. Under conditions of sperm competition, females who mated with both types of males fertilized a constant proportion of eggs with each sperm type over their lifetime. PSR males produced fewer offspring among progenies from doubleinseminated females. Phenotypic fitness effects are believed to play a minor role in determining PSR frequencies in natural populations.

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Section: Discussionsupporting

confidence: 86%

Section: Sperm Competitionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 94%

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Phenotypic fitness effects of the selfish B chromosome, paternal sex ratio (PSR) in the parasitic waspNasonia vitripennis

Beukeboom

1994

Evol Ecol

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“…A number of studies have shown that female wasps produce more male-biased sex ratio later in their life span [3,[6][7][8] though there was some exception [9]. The increased production of males, that is, unfertilized haploid eggs, may result from sperm depletion or reduced sperm viability.…”

Section: Introductionmentioning

confidence: 99%

Age-Dependent Constraints of Sex Allocation in a Parasitoid Wasp

Ueno

2014

Psyche: A Journal of Entomology

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The offspring sex ratios of parasitoid wasps often depend on the age of ovipositing females. Physiological constraints such as sperm depletion and senescence are a likely cause. Also, maternal control in response to female age may be an alternative explanation. Here valvifer or abdominal tip movements were used to assess whether age-dependent sex ratio was due to physiological constraints or maternal control with an ichneumonid wasp, Pimpla nipponica; the offspring sex ratio at the time of wasp emergence was compared with the sex ratio predicted from abdominal tip movements. When the female was relatively young, there was little difference between the sex ratios examined. However, as the age of the females increased, the realized offspring sex ratio at wasp emergence was more male-biased than the sex ratio predicted at the time of oviposition. Thus, there was an inconsistency between the sex ratios. Curiously, the predictions of continuous movements for male egg deposition were always perfect, regardless of maternal age; fertilization control failure was detected when the females had decided to lay female eggs. Thus, physiological constraints are a likely explanation for the inconsistency in relation to female age for P. nipponica.

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“…Though in some parasitoid wasps (10) and ants (unpublished observations) males may regain mating capability after resting, there is no evidence that "sperm replenishment" is correlated with continual spermatogenesis. In contrast, even in parasitoid wasps the testes decrease in size soon after eclosion (11), and the males' ability to inseminate is limited (12,13).…”

mentioning

confidence: 99%

Fighting for a harem of queens: physiology of reproduction in Cardiocondyla male ants.

Heınze¹,

Hölldobler²

1993

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

120

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Several species of the ant genus Cardiocondyla produce dimorphic males, which exhibit sharply different mating strategies. Winged males typically disperse to mate outside the nest, whereas wingless, ergatoid males stay in the nest and aggressively employ their mandibles against competing ergatoid males to monopolize the virgin queens eclosing in the nest. Such aggressive mating strategy would only be adaptive if the males had unlimited sperm supply. Histological studies showed that, contrary to the rule in the Hymenoptera order, the ergatoid Cardiocondyla males are indeed able to produce sperm during their entire adult life. Winged males, on the other hand, have only a limited sperm supply since spermatogenesis ceases in the late pupal stage.

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Span of Female Emergence and Male Sperm Depletion in the Female-biased, Quasi-gregarious Parasitoid, Pachycrepoideus vindemiae (Hymenoptera: Pteromalidae)

Cited by 76 publications

References 0 publications

Phenotypic fitness effects of the selfish B chromosome, paternal sex ratio (PSR) in the parasitic waspNasonia vitripennis

Phenotypic fitness effects of the selfish B chromosome, paternal sex ratio (PSR) in the parasitic waspNasonia vitripennis

Age-Dependent Constraints of Sex Allocation in a Parasitoid Wasp

Fighting for a harem of queens: physiology of reproduction in Cardiocondyla male ants.

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