Effect of Body Coloration on Male–Male Competition in a Cyprinid Fish Puntius titteya

2019 ◽  
Vol 36 (2) ◽  
pp. 141 ◽  
Author(s):  
Maki Ogita ◽  
Kenji Karino
Keyword(s):  
Cyprinid Fish ◽  
Male Competition ◽  
Body Coloration

scholarly journals Combined cues of male competition influence spermatozoal investment in a moth

2020 ◽  
Vol 34 (6) ◽  
pp. 1223-1234
Author(s):  
Junyan Liu ◽  
Yujing Zhang ◽  
Xia‐Lin Zheng ◽  
Xiong Z. He ◽  
Qiao Wang
Keyword(s):  
Male Competition

scholarly journals Optimization of feeding quantity and frequency to rear the cyprinid fish Garra rufa (Heckel, 1843)

2019 ◽  
Vol 50 (3) ◽  
pp. 876-881
Author(s):  
Mafalda M. R. S. Catarino ◽  
Mónica R. S. Gomes ◽  
Susana M. F. Ferreira ◽  
Sílvia C. Gonçalves
Keyword(s):  
Cyprinid Fish ◽  
Garra Rufa

scholarly journals Protogyny in Autumn Migration: Do Male Birds ”Play Chicken”?

The Auk ◽  
2005 ◽  
Vol 122 (1) ◽  
pp. 71-81 ◽  
Author(s):  
Alexander M. Mills
Keyword(s):  
Migratory Birds ◽  
Indirect Selection ◽  
Male Competition ◽  
Autumn Migration ◽  
Direct Selection ◽  
Differential Migration ◽  
The North ◽  
Parsimonious Explanation ◽  
Ground Conditions ◽  
Wintering Ground

AbstractProtandry, the earlier arrival of males than of females on breeding areas, occurs in many taxa, including many migratory birds. Numerous hypotheses have been generated to explain protandry. Using bird-banding records, I show that protogyny, the earlier migration of females, frequently occurs in the autumn, though it is less universal and less dramatic than spring protandry. In one species, it occurs in both hatch-year and adult birds. When (1) spring and autumn, (2) departures and arrivals, and (3) breeding and wintering ground conditions are considered, hypotheses generated only to explain spring protandry can be more thoroughly evaluated. Using that approach, the most parsimonious explanation of differential migration between the sexes explains earlier male arrival in spring and later male departure in autumn through either (1) indirect selection operating on intrasexual male competition for territories or (2) direct selection operating on intersexual relations requiring males to be present on breeding territories when females are present. In autumn-protogynous species, males may ”play chicken,” balancing the benefits of remaining longer than females and protecting territories for subsequent years against the costs of remaining in the north under deteriorating conditions and delaying the acquisition of a good winter territory.Protogynie et migration automnale: Est-ce que les mâles ”jouent les dégonflés”?

scholarly journals Larval competition risk shapes male–male competition and mating behavior in an anuran

2016 ◽  
pp. arw100 ◽  
Author(s):  
Hugo Cayuela ◽  
Thierry Lengagne ◽  
Bernard Kaufmann ◽  
Pierre Joly ◽  
Jean-Paul Léna
Keyword(s):  
Mating Behavior ◽  
Male Competition ◽  
Larval Competition

scholarly journals Music as male competition

1999 ◽  
Vol 92 (8) ◽  
pp. 439-439 ◽  
Author(s):  
P A Gardner
Keyword(s):  
Male Competition

scholarly journals Male competition and the evolution of mating and life-history traits in experimental populations of Aedes aegypti

2019 ◽  
Vol 286 (1904) ◽  
pp. 20190591 ◽  
Author(s):  
Alima Qureshi ◽  
Andrew Aldersley ◽  
Brian Hollis ◽  
Alongkot Ponlawat ◽  
Lauren J. Cator
Keyword(s):  
Life History ◽  
Aedes Aegypti ◽  
Mating Success ◽  
Life History Traits ◽  
Male Competition ◽  
Male Mating ◽  
Male Mating Success ◽  
Reproductive Control ◽  
Evolutionary Response ◽  
Mating Conditions

Aedes aegypti is an important disease vector and a major target of reproductive control efforts. We manipulated the opportunity for sexual selection in populations of Ae . aegypti by controlling the number of males competing for a single female. Populations exposed to higher levels of male competition rapidly evolved higher male competitive mating success relative to populations evolved in the absence of competition, with an evolutionary response visible after only five generations. We also detected correlated evolution in other important mating and life-history traits, such as acoustic signalling, fecundity and body size. Our results indicate that there is ample segregating variation for determinants of male mating competitiveness in wild populations and that increased male mating success trades-off with other important life-history traits. The mating conditions imposed on laboratory-reared mosquitoes are likely a significant determinant of male mating success in populations destined for release.

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