scholarly journals Sperm is a sexual ornament in rose bitterling

2018 ◽  
Vol 31 (11) ◽  
pp. 1610-1622 ◽  
Author(s):  
Carl Smith ◽  
Rowena Spence ◽  
Martin Reichard
Keyword(s):  
Sexual Ornament

scholarly journals Male sexual ornament size is positively associated with reproductive morphology and enhanced fertility in the stalk-eyed fly Teleopsis dalmanni

2008 ◽  
Vol 8 (1) ◽  
pp. 236 ◽  
Author(s):  
David W Rogers ◽  
Matthew Denniff ◽  
Tracey Chapman ◽  
Kevin Fowler ◽  
Andrew Pomiankowski
Keyword(s):  
Reproductive Morphology ◽  
Sexual Ornament

THE GENETIC ARCHITECTURE OF A FEMALE SEXUAL ORNAMENT

Evolution ◽  
2007 ◽  
Vol 62 (1) ◽  
pp. 86-98 ◽  
Author(s):  
Dominic Wright ◽  
Susanne Kerje ◽  
Helena Brändström ◽  
Karin Schütz ◽  
Andreas Kindmark ◽  
...  
Keyword(s):  
Genetic Architecture ◽  
Sexual Ornament

Retracted: Heterozygosity, sexual ornament and body size in the crested newt

2013 ◽  
Vol 291 (2) ◽  
pp. 146-153 ◽  
Author(s):  
M. Herdegen ◽  
K. Nadachowska-Brzyska ◽  
A. Konowalik ◽  
W. Babik ◽  
J. Radwan
Keyword(s):  
Body Size ◽  
Crested Newt ◽  
Sexual Ornament

Bluegill Coloration as a Sexual Ornament: Evidence From Ontogeny, Sexual Dichromatism, and Condition Dependence

Ethology ◽  
2010 ◽  
Vol 116 (5) ◽  
pp. 416-428 ◽  
Author(s):  
Karen M. Cogliati ◽  
Lynda D. Corkum ◽  
Stéphanie M. Doucet
Keyword(s):  
Condition Dependence ◽  
Sexual Dichromatism ◽  
Sexual Ornament

scholarly journals EVOLUTIONARY DYNAMICS OF A SEXUAL ORNAMENT IN THE HOUSE SPARROW (PASSER DOMESTICUS): THE ROLE OF INDIRECT SELECTION WITHIN AND BETWEEN SEXES

Evolution ◽  
2008 ◽  
Vol 62 (6) ◽  
pp. 1275-1293 ◽  
Author(s):  
Henrik Jensen ◽  
Ingelin Steinsland ◽  
Thor Harald Ringsby ◽  
Bernt-Erik Sæther
Keyword(s):  
Evolutionary Dynamics ◽  
House Sparrow ◽  
Passer Domesticus ◽  
Indirect Selection ◽  
Sexual Ornament

scholarly journals Carotenoids, oxidative stress and female mating preference for longer lived males

2007 ◽  
Vol 274 (1618) ◽  
pp. 1591-1596 ◽  
Author(s):  
Thomas W Pike ◽  
Jonathan D Blount ◽  
Bjørn Bjerkeng ◽  
Jan Lindström ◽  
Neil B Metcalfe
Keyword(s):  
Oxidative Stress ◽  
Mate Choice ◽  
Gasterosteus Aculeatus ◽  
Reproductive Investment ◽  
Mating Preference ◽  
Implicit Assumption ◽  
Sexual Ornaments ◽  
Sexual Ornament ◽  
Breeding Attempt ◽  
Rate Of Ageing

Some of the most spectacular exaggerated sexual ornaments are carotenoid dependent. It has been suggested that such ornaments have evolved because carotenoid pigments are limiting for both signal expression and in their role as antioxidants and immunostimulants. An implicit assumption of this hypothesis is that males which can afford to produce more elaborate carotenoid-dependent displays are signalling their enhanced ability to resist parasites, disease or oxidative stress and hence would be predicted to live longer. Therefore, in species with carotenoid-dependent ornaments where a parent's future longevity is crucial for determining offspring survival, there should be a mating preference for partners that present the lowest risk of mortality during the breeding attempt, as signalled by the ability to allocate carotenoids to sexual displays. In an experimental study using three-spined sticklebacks ( Gasterosteus aculeatus ), we show that when dietary carotenoid intake is limited, males attempt to maintain their sexual ornament at the expense of body carotenoids and hence suffer from reduced reproductive investment and a shorter lifespan. These males also suffer from an increased susceptibility to oxidative stress, suggesting that this may constitute the mechanism underlying the increased rate of ageing. Furthermore, in pairwise mate-choice trials, females preferred males that had a greater access to carotenoids and chance of surviving the breeding season, suggesting that females can make adaptive mate choice decisions based on a male's carotenoid status and potential future longevity.

scholarly journals Onset of Sexual Maturity in Female Chickens is Genetically Linked to Loci Associated with Fecundity and a Sexual Ornament

2011 ◽  
Vol 47 ◽  
pp. 31-36 ◽  
Author(s):  
D Wright ◽  
C Rubin ◽  
K Schutz ◽  
S Kerje ◽  
A Kindmark ◽  
...  
Keyword(s):  
Sexual Maturity ◽  
Sexual Ornament

Environmental influence and cohort effects in a sexual ornament in the house sparrow, Passer domesticus

Oikos ◽  
2006 ◽  
Vol 114 (2) ◽  
pp. 212-224 ◽  
Author(s):  
Henrik Jensen ◽  
Torkild Svorkmo-Lundberg ◽  
Thor Harald Ringsby ◽  
Bernt-Erik Saether
Keyword(s):  
House Sparrow ◽  
Environmental Influence ◽  
Passer Domesticus ◽  
Cohort Effects ◽  
Sexual Ornament
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