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

2018 ◽  
Vol 31 (7) ◽  
pp. 1035-1046 ◽  
Author(s):  
Paolo Giovanni Ghislandi ◽  
Stano Pekár ◽  
Magdalena Matzke ◽  
Sarah Schulte-Döinghaus ◽  
Trine Bilde ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Resource Availability ◽  
Alternative Reproductive Tactics ◽  
Selection Intensity ◽  
Reproductive Tactics

scholarly journals Comparing population level sexual selection in a species with alternative reproductive tactics

2014 ◽  
Vol 25 (6) ◽  
pp. 1524-1533 ◽  
Author(s):  
Karen M. Cogliati ◽  
Allison F. Mistakidis ◽  
Julie R. Marentette ◽  
Adrienne Lau ◽  
Benjamin M. Bolker ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Population Level ◽  
Alternative Reproductive Tactics ◽  
Reproductive Tactics

Sexual selection on performance traits in an Australian lizard with alternative reproductive tactics

2020 ◽  
Author(s):  
Daniel W. A. Noble ◽  
Fonti Kar ◽  
Shinichi Nakagawa ◽  
J. Scott Keogh ◽  
Martin J. Whiting
Keyword(s):  
Sexual Selection ◽  
Alternative Reproductive Tactics ◽  
Reproductive Tactics ◽  
Performance Traits

Sexual selection leads to a tenfold difference in reproductive success of alternative reproductive tactics in male Atlantic salmon

2016 ◽  
Vol 103 (5-6) ◽  
Author(s):  
Cédric Tentelier ◽  
Olivier Lepais ◽  
Nicolas Larranaga ◽  
Aurélie Manicki ◽  
Frédéric Lange ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Reproductive Success ◽  
Atlantic Salmon ◽  
Alternative Reproductive Tactics ◽  
Reproductive Tactics

Effects of foraging and sexual selection on ecomorphology of a fish with alternative reproductive tactics

2013 ◽  
Vol 24 (6) ◽  
pp. 1339-1347 ◽  
Author(s):  
Scott F. Colborne ◽  
Pedro R. Peres-Neto ◽  
Fred J. Longstaffe ◽  
Bryan D. Neff
Keyword(s):  
Sexual Selection ◽  
Alternative Reproductive Tactics ◽  
Reproductive Tactics

Cephalopod mating systems as models for the study of sexual selection and alternative reproductive tactics: a review

2020 ◽  
Vol 96 (2) ◽  
pp. 375-398
Author(s):  
Lígia Haselmann Apostólico ◽  
José Eduardo Amoroso RodriguezMarian
Keyword(s):  
Sexual Selection ◽  
Female Choice ◽  
Mantle Cavity ◽  
Alternative Reproductive Tactics ◽  
Male Mating ◽  
Reproductive Tactics ◽  
Mating Period ◽  
Alternative Pathways ◽  
Female Promiscuity ◽  
Striking Change

Cephalopods are a remarkable group for studies on sexual selection, due to their complex reproductive behavior, pronounced sexual dimorphism, polygamous behavior, as well as cumulative evidence of pre- and postcopulatory male-male competition and female choice in the group. is paper provides a review of sexual selection studies on cephalopods, with an emphasis on the loliginid squid mating system. In this system, males may adopt alternative reproductive tactics (ART) and display male intrasexual dimorphism, with each morph generally exhibiting distinct behaviors and ejaculate traits. Consort males typically transfer ejaculates to the female mantle cavity, while sneaker males typically transfer ejaculates to the female buccal region, where a sperm storage organ is located. Each site provides distinct fertilization environments for the ejaculates of each morph, differing in the availability of eggs, gamete protection, and timing between mating and fertilization. Accordingly, the ejaculates of each morph show putative adaptations for each site, differing in size, morphology, sperm release duration, and sperm behavior. Although solid evidence is lacking for most loliginids, cryptic female choice may occur in this system through, for example, spermatangia removal or egg string manipulation during fertilization. In addition, recent evidence for one loliginid species indicates that adoption of male ART is ontogenetic and may represent two alternative pathways: from immature males (i) directly to consort phenotype or (ii) going through a sneaker phase, then switching to consort morph. The second pathway would, therefore, imply striking change in behavior, physiology, and ejaculates. Moreover, data on the age of this species suggests that the adoption of sneaker tactic early in life may be associated with extending the male mating period by 25%. With such a peculiar system, loliginids should prove useful not only for comprehending the evolution of female promiscuity and ART in cephalopods, but also as an emerging nonvertebrate and nonarthropod model for testing sperm competition models.

Does allometry of a sexually selected ornamental trait vary with sexual selection intensity? A multi-species test in damselflies

2014 ◽  
Vol 39 (3) ◽  
pp. 399-403 ◽  
Author(s):  
DAVID OUTOMURO ◽  
ADOLFO CORDERO RIVERA ◽  
ANGELA NAVA-BOLAÑOS ◽  
ALEX CÓRDOBA-AGUILAR
Keyword(s):  
Sexual Selection ◽  
Selection Intensity

scholarly journals Alternative reproductive tactics increase effective population size and decrease inbreeding in wild Atlantic salmon

2014 ◽  
Vol 7 (9) ◽  
pp. 1094-1106 ◽  
Author(s):  
Charles Perrier ◽  
Éric Normandeau ◽  
Mélanie Dionne ◽  
Antoine Richard ◽  
Louis Bernatchez
Keyword(s):  
Atlantic Salmon ◽  
Population Size ◽  
Effective Population Size ◽  
Alternative Reproductive Tactics ◽  
Effective Population ◽  
Reproductive Tactics
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