Males missing their sexually selected weapon have decreased fighting ability and mating success in a competitive environment

Winning or losing a fight can have lasting effects on competitors. Controlling for inherent fighting ability and other factors, a history of winning often makes individuals more likely to win future contests, while the opposite is true for losers (the ‘winner–loser effect’). But does the winner–loser effect also influence a male's mating success? We experimentally staged contests between male mosquitofish ( Gambusia holbrooki ) such that focal males either won or lost three successive encounters with stimulus males. We then placed a size-matched (to control for inherent fighting ability) winner and loser with a female and monitored their behaviour ( n = 63 trios). Winners spent significantly more time associating with the female. Winners did not make more copulation attempts, nor have a greater number of successful attempts. There was, however, a significant effect of male size on the number of successful copulation attempts: success decreased with male size for losers, but size had no effect on the success rate of winners.

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Winning the Game: Team Effectiveness in a Competitive Environment

PsycEXTRA Dataset ◽

10.1037/e518332013-077 ◽

2012 ◽

Author(s):

Julie A. Steinke ◽

Debra Steele-Johnson ◽

Elizabeth Peyton ◽

Zach Kalinoski ◽

Brian D. Michael

Keyword(s):

Team Effectiveness ◽

Competitive Environment

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Central patient and OR management as factor of success in the competitive environment marked by DRG

The Thoracic and Cardiovascular Surgeon ◽

10.1055/s-0029-1191324 ◽

2009 ◽

Vol 56 (S 01) ◽

Author(s):

D Boehm ◽

H Treede ◽

M Zluhan ◽

K Overlack ◽

H Reichenspurner

Keyword(s):

Competitive Environment ◽

Or Management

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Financial technologies in the field of retail payments: Current trends and perspectives in EU and Russia

Voprosy Ekonomiki ◽

10.32609/0042-8736-2018-3-48-63 ◽

2018 ◽

pp. 48-63 ◽

Cited By ~ 1

Author(s):

D. V. Trofimov

Keyword(s):

European Union ◽

Systems Development ◽

Competitive Environment ◽

The European Union ◽

Payment Systems ◽

Payment Card ◽

Current Trends ◽

Retail Payments

The article analyzes tendencies of national payment systems development in the European Union and Russia: electronic and deposit money, bank cards, financial technologies in the field of retail payments. The author identifies factors that stimulate the development of cashless retail payments and the national payment card systems in the European Union, as well as the problems and prospects of this sector forming in Russia. Recommendations on the development of a competitive environment and financial technologies in the field of retail payments in Russia are proposed.

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Parental breeding age effects on descendants’ longevity interact over two generations in matrilines and patrilines

10.32942/osf.io/mnx8h ◽

2019 ◽

Author(s):

Zac Wylde ◽

Foteini Spagopoulou ◽

Amy K Hooper ◽

Alexei A Maklakov ◽

Russell Bonduriansky

Keyword(s):

Maternal Age ◽

First Generation ◽

Age Effects ◽

Population Variation ◽

Paternal Age ◽

Interactive Effects ◽

Competitive Environment ◽

Larval Diet ◽

Negative Effects ◽

Two Generations

Individuals within populations vary enormously in mortality risk and longevity, but the causes of this variation remain poorly understood. A potentially important and phylogenetically widespread source of such variation is maternal age at breeding, which typically has negative effects on offspring longevity. Here, we show that paternal age can affect offspring longevity as strongly as maternal age does, and that breeding age effects can interact over two generations in both matrilines and patrilines. We manipulated maternal and paternal ages at breeding over two generations in the neriid fly Telostylinus angusticollis. To determine whether breeding age effects can be modulated by the environment, we also manipulated larval diet and male competitive environment in the first generation. We found separate and interactive effects of parental and grandparental ages at breeding on descendants’ mortality rate and lifespan in both matrilines and patrilines. These breeding age effects were not modulated by grandparental larval diet quality or competitive environment. Our findings suggest that variation in maternal and paternal ages at breeding could contribute substantially to intra-population variation in mortality and longevity.

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