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Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics

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Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics. / Ghislandi, Paolo Giovanni; Pekar, Stano; Matzke, Magdalena et al.

In: Journal of Evolutionary Biology, Vol. 31, No. 7, 07.2018, p. 1035-1046.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Ghislandi, PG, Pekar, S, Matzke, M, Schulte-Doeinghaus, S, Bilde, T & Tuni, C 2018, 'Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics', Journal of Evolutionary Biology, vol. 31, no. 7, pp. 1035-1046. https://doi.org/10.1111/jeb.13284

APA

Ghislandi, P. G., Pekar, S., Matzke, M., Schulte-Doeinghaus, S., Bilde, T., & Tuni, C. (2018). Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics. Journal of Evolutionary Biology, 31(7), 1035-1046. https://doi.org/10.1111/jeb.13284

CBE

Ghislandi PG, Pekar S, Matzke M, Schulte-Doeinghaus S, Bilde T, Tuni C. 2018. Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics. Journal of Evolutionary Biology. 31(7):1035-1046. https://doi.org/10.1111/jeb.13284

MLA

Vancouver

Ghislandi PG, Pekar S, Matzke M, Schulte-Doeinghaus S, Bilde T, Tuni C. Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics. Journal of Evolutionary Biology. 2018 Jul;31(7):1035-1046. https://doi.org/10.1111/jeb.13284

Author

Ghislandi, Paolo Giovanni ; Pekar, Stano ; Matzke, Magdalena et al. / Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics. In: Journal of Evolutionary Biology. 2018 ; Vol. 31, No. 7. pp. 1035-1046.

Bibtex

@article{bc6f4175f4b040e69349d650bc2eb039,
title = "Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics",
abstract = "The expression of alternative reproductive tactics can be plastic and occur simultaneously depending on cues that vary spatially or temporally. For example, variation in resources and sexual selection intensity is expected to influence the pay-off of each tactic and shape the decision of which tactic to employ. Males of the nuptial gift-giving spider Pisaura mirabilis can adopt three tactics: offering a genuine prey gift, a worthless' non-nutritious gift or no gift. We hypothesized that resources and/or male body condition, and mating opportunity and sexual selection intensity, vary over the course of the mating season to shape the co-existence of alternative traits. We measured these variables in the field over two seasons, to investigate the predictions that as the mating season progresses, (i) males become more likely to employ a gift-giving tactic, and (ii) the likelihood of switching from worthless to genuine gifts increases. Prey availability increased over the season and co-varied with the propensity of males to employ the gift-giving tactic, but we found no support for condition-dependent gift giving. Males responded to an increase in female availability by increasing their mating effort (gift production). Furthermore, the frequency of genuine gift use increased with sexual selection intensity, consistent with the assumption that sperm competition intensity increases with time. Our results suggest that the frequency of alternative tactics is shaped by seasonal changes in ecological factors and sexual selection. This leads to relaxed selection for the gift-giving tactic early in the season when females are less choosy and resources more scarce, and increased selection for genuine gifts later in the season driven by mating opportunity and risk of sperm competition.",
keywords = "alternative reproductive tactics, female availability, nuptial gifts, opportunistic mating, prey availability, sexual selection, NUPTIAL FEEDING SPIDER, WEB-BUILDING SPIDER, GIFT-GIVING SPIDER, PISAURA-MIRABILIS, SPERM COMPETITION, ONTHOPHAGUS-TAURUS, ESTIMATING FITNESS, WOLF SPIDER, EVOLUTION, FEMALES",
author = "Ghislandi, {Paolo Giovanni} and Stano Pekar and Magdalena Matzke and Sarah Schulte-Doeinghaus and Trine Bilde and Cristina Tuni",
year = "2018",
month = jul,
doi = "10.1111/jeb.13284",
language = "English",
volume = "31",
pages = "1035--1046",
journal = "Journal of Evolutionary Biology",
issn = "1010-061X",
publisher = "Wiley-Blackwell Publishing Ltd.",
number = "7",

}

RIS

TY - JOUR

T1 - Resource availability, mating opportunity and sexual selection intensity influence the expression of male alternative reproductive tactics

AU - Ghislandi, Paolo Giovanni

AU - Pekar, Stano

AU - Matzke, Magdalena

AU - Schulte-Doeinghaus, Sarah

AU - Bilde, Trine

AU - Tuni, Cristina

PY - 2018/7

Y1 - 2018/7

N2 - The expression of alternative reproductive tactics can be plastic and occur simultaneously depending on cues that vary spatially or temporally. For example, variation in resources and sexual selection intensity is expected to influence the pay-off of each tactic and shape the decision of which tactic to employ. Males of the nuptial gift-giving spider Pisaura mirabilis can adopt three tactics: offering a genuine prey gift, a worthless' non-nutritious gift or no gift. We hypothesized that resources and/or male body condition, and mating opportunity and sexual selection intensity, vary over the course of the mating season to shape the co-existence of alternative traits. We measured these variables in the field over two seasons, to investigate the predictions that as the mating season progresses, (i) males become more likely to employ a gift-giving tactic, and (ii) the likelihood of switching from worthless to genuine gifts increases. Prey availability increased over the season and co-varied with the propensity of males to employ the gift-giving tactic, but we found no support for condition-dependent gift giving. Males responded to an increase in female availability by increasing their mating effort (gift production). Furthermore, the frequency of genuine gift use increased with sexual selection intensity, consistent with the assumption that sperm competition intensity increases with time. Our results suggest that the frequency of alternative tactics is shaped by seasonal changes in ecological factors and sexual selection. This leads to relaxed selection for the gift-giving tactic early in the season when females are less choosy and resources more scarce, and increased selection for genuine gifts later in the season driven by mating opportunity and risk of sperm competition.

AB - The expression of alternative reproductive tactics can be plastic and occur simultaneously depending on cues that vary spatially or temporally. For example, variation in resources and sexual selection intensity is expected to influence the pay-off of each tactic and shape the decision of which tactic to employ. Males of the nuptial gift-giving spider Pisaura mirabilis can adopt three tactics: offering a genuine prey gift, a worthless' non-nutritious gift or no gift. We hypothesized that resources and/or male body condition, and mating opportunity and sexual selection intensity, vary over the course of the mating season to shape the co-existence of alternative traits. We measured these variables in the field over two seasons, to investigate the predictions that as the mating season progresses, (i) males become more likely to employ a gift-giving tactic, and (ii) the likelihood of switching from worthless to genuine gifts increases. Prey availability increased over the season and co-varied with the propensity of males to employ the gift-giving tactic, but we found no support for condition-dependent gift giving. Males responded to an increase in female availability by increasing their mating effort (gift production). Furthermore, the frequency of genuine gift use increased with sexual selection intensity, consistent with the assumption that sperm competition intensity increases with time. Our results suggest that the frequency of alternative tactics is shaped by seasonal changes in ecological factors and sexual selection. This leads to relaxed selection for the gift-giving tactic early in the season when females are less choosy and resources more scarce, and increased selection for genuine gifts later in the season driven by mating opportunity and risk of sperm competition.

KW - alternative reproductive tactics

KW - female availability

KW - nuptial gifts

KW - opportunistic mating

KW - prey availability

KW - sexual selection

KW - NUPTIAL FEEDING SPIDER

KW - WEB-BUILDING SPIDER

KW - GIFT-GIVING SPIDER

KW - PISAURA-MIRABILIS

KW - SPERM COMPETITION

KW - ONTHOPHAGUS-TAURUS

KW - ESTIMATING FITNESS

KW - WOLF SPIDER

KW - EVOLUTION

KW - FEMALES

U2 - 10.1111/jeb.13284

DO - 10.1111/jeb.13284

M3 - Journal article

C2 - 29676060

VL - 31

SP - 1035

EP - 1046

JO - Journal of Evolutionary Biology

JF - Journal of Evolutionary Biology

SN - 1010-061X

IS - 7

ER -