Female seed beetles, Callosobruchus maculatus, remate for male-supplied water rather than ejaculate nutrition

Ursprung, Claudia; Hollander, Michelle den; Gwynne, Darryl

doi:10.1007/s00265-009-0711-z

Cited by 64 publications

(73 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A possible explanation is that low-condition males that transfer small ejaculates attempt to maintain spermatophore capsule volume by increasing the water content, if doing so stimulates stretch receptors in the female reproductive tract (Ferkau & Fisher 2006). An additional and non-exclusive hypothesis is that females benefit from the water content of spermatophore capsules, based on recent evidence of such benefit in the seed beetle Callosobruchus maculatus (Edvardsson 2007;Ursprung et al 2009). However, this hypothesis is unlikely to apply because A. bipunctata feeds on a water-rich prey: a single adult pea aphid contains over 25 times more water (289 mg + 24; n ¼ 3; J. C. Perry 2006, unpublished data) than a spermatophore capsule (table 1).…”

Section: Discussionmentioning

confidence: 99%

Condition-dependent ejaculate size and composition in a ladybird beetle

Perry

Rowe

2010

Proc. R. Soc. B.

View full text Add to dashboard Cite

Sexually selected male ejaculate traits are expected to depend on the resource state of males. Theory predicts that males in good condition will produce larger ejaculates, but that ejaculate composition will depend on the relative production costs of ejaculate components and the risk of sperm competition experienced by low-and high-condition males. Under some conditions, when low condition leads to poorer performance in sperm competition, males in low condition may produce ejaculates with higher sperm content relative to their total ejaculate and may even transfer more sperm than high-condition males in an absolute sense. Previous studies in insects have shown that males in good condition transfer larger ejaculates or more sperm, but it has not been clear whether increased sperm content represents a shift in allocation or simply a larger ejaculate, and thus the condition dependence of ejaculate composition has been largely untested. We examined condition dependence in ejaculate by manipulating adult male condition in a ladybird beetle (Adalia bipunctata) in which males transfer three distinct ejaculate components during mating: sperm, non-sperm ejaculate retained within the female reproductive tract, and a spermatophore capsule that females eject and ingest following mating. We found that high condition males indeed transferred larger ejaculates, potentially achieved by an increased rate of ejaculate transfer, and allocated less to sperm compared with low-condition males. Low-condition males transferred ejaculates with absolutely and proportionally more sperm. This study provides the first experimental evidence for a condition-dependent shift in ejaculate composition.

show abstract

Section: Discussionmentioning

confidence: 99%

Condition-dependent ejaculate size and composition in a ladybird beetle

Perry

Rowe

2010

Proc. R. Soc. B.

View full text Add to dashboard Cite

show abstract

“…C. maculatus females are polyandrous and have become an important model insect for the study of sexual conflicts (Crudgington and Siva-Jothy, 2000;Arnqvist et al, 2005;van Lieshout et al, 2014). Several explanations have been proposed to explain the polyandry in this species, including direct and indirect benefits such as increased egg production and somatic maintenance of starved females (Fox, 1993a), egg size and offspring survivorship (Fox, 1993b), hydration (Edvardsson, 2007;Ursprung et al, 2009), success of new founder populations (Power and Holman, 2014).…”

Section: Introductionmentioning

confidence: 97%

Diet-derived vicilins detected in eggs laid by a double-mated female Callosobruchus maculatus originate from nuptial gifts donated by both male partners

Silva

Kunz

Linhares

et al. 2015

Journal of Stored Products Research

View full text Add to dashboard Cite

“…These ejaculates are costly for males to produce and their size and composition can depend on male condition (Boggs, 1990;Dewsbury, 1982;Gwynne, 1984Gwynne, , 1988Moya-Larano & Fox, 2006;Reinhardt, Naylor, & Siva-Jothy, 2009;Thornhill, 1976;Ursprung, den Hollander, & Gwynne, 2009). Two main factors have been shown to influence the characteristics of such ejaculates.…”

mentioning

confidence: 98%

“…For example, female choice for large males in ground crickets generates direct sexual selection on male body size (Fedorka & Mousseau, 2002a). Males may thus evolve to exceed females in body size in gift-giving taxa (Bonduriansky, Wheeler, & Rowe, 2005), even in groups such as insects in which females are normally larger than males (Savalli & Fox, 1999;Ursprung et al, 2009).…”

mentioning

confidence: 99%