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1

Wolfenbarger, L. L. "Red coloration of male northern cardinals correlates with mate quality and territory quality." Behavioral Ecology 10, no. 1 (January 1, 1999): 80–90. http://dx.doi.org/10.1093/beheco/10.1.80.

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2

Draud, M. J., and M. Itzkowitz. "Mate numbers or mate quality: female mate choice in the polygynandrous variegated pupfish (Cyprinodon variegatus)." Ethology Ecology & Evolution 16, no. 1 (January 2004): 1–13. http://dx.doi.org/10.1080/08927014.2004.9522649.

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3

Vakirtzis, Antonios, and S. Craig Roberts. "Mate choice copying and mate quality bias: different processes, different species." Behavioral Ecology 20, no. 4 (2009): 908–11. http://dx.doi.org/10.1093/beheco/arp073.

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4

Witte, Klaudia, and Jean-Guy J. Godin. "Mate choice copying and mate quality bias: are they different processes?" Behavioral Ecology 21, no. 1 (November 16, 2009): 193–94. http://dx.doi.org/10.1093/beheco/arp154.

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5

McEWEN, P. L., and L. R. SCHAEFFER. "COMPARING MATE QUALITY BETWEEN PROVEN AND UNPROVEN DAIRY BULLS." Canadian Journal of Animal Science 69, no. 1 (March 1, 1989): 57–60. http://dx.doi.org/10.4141/cjas89-008.

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Holstein service sire information was obtained from Eastern Breeders Incorporated to compare mate quality between proven and unproven sires. Proven sires were mated to females having higher conformation scores for final classification, mammary system, feet and legs and rump. Size score of mates favored unproven bulls. Advantages in mate estimated transmitting ability value for milk and fat index favored proven sires by 0.60 and 0.63 BCA points, respectively. In general, the difference in mate quality between the two sire groups was relatively small. However, proven sires showed a slight advantage in mate quality for the majority of traits studied. Key words: Dairy, sire, mate
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6

Vakirtzis, Antonios, and S. Craig Roberts. "Mate Quality Bias: Sex Differences in Humans." Annales Zoologici Fennici 47, no. 2 (April 2010): 149–57. http://dx.doi.org/10.5735/086.047.0208.

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7

TRIEFENBACH, FRANK, and MURRAY ITZKOWITZ. "Mate switching as a function of mate quality in convict cichlids,Cichlasoma nigrofasciatum." Animal Behaviour 55, no. 5 (May 1998): 1263–70. http://dx.doi.org/10.1006/anbe.1997.0690.

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8

Pham, Michael N., Nicole Barbaro, Justin K. Mogilski, and Todd K. Shackelford. "Coalitional mate retention is correlated positively with friendship quality involving women, but negatively with male–male friendship quality." Personality and Individual Differences 79 (June 2015): 87–90. http://dx.doi.org/10.1016/j.paid.2015.01.034.

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9

Dhindsa, Manjit S., David A. Boag, and Petr E. Komers. "Mate Choice in Black-Billed Magpies: The Role of Male Quality versus Quality of Defended Resources." Ornis Scandinavica 20, no. 3 (September 1989): 193. http://dx.doi.org/10.2307/3676913.

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10

Holveck, Marie-Jeanne, and Katharina Riebel. "Low-quality females prefer low-quality males when choosing a mate." Proceedings of the Royal Society B: Biological Sciences 277, no. 1678 (October 7, 2009): 153–60. http://dx.doi.org/10.1098/rspb.2009.1222.

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11

Leonard, Marty L., and Jaroslav Picman. "Mate choice by marsh wrens: the influence of male and territory quality." Animal Behaviour 36, no. 2 (April 1988): 517–28. http://dx.doi.org/10.1016/s0003-3472(88)80023-x.

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12

Head, Megan L., Rebecca J. Fox, and Iain Barber. "Environmental change mediates mate choice for an extended phenotype, but not for mate quality." Evolution 71, no. 1 (November 2, 2016): 135–44. http://dx.doi.org/10.1111/evo.13091.

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13

Morris, Michael M. J., and Robert E. Lemon. "Mate choice in American Redstarts: by territory quality?" Canadian Journal of Zoology 66, no. 10 (October 1, 1988): 2255–61. http://dx.doi.org/10.1139/z88-334.

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We consider the hypothesis that mate choice in American Redstarts (Setophaga ruticilla) depends primarily on features of territories held by males. We test the hypothesis that the territories of yearling males are demonstrably different from and inferior for reproduction to those of adult males. Territories held by the two age-classes in New Brunswick, Canada, were floristically different, but there were also major differences in territorial features in three microgeographic areas, both within each age-group and without regard to age. There were greater differences in nest success between areas than between the age-classes. We detected no differences in immediate nest site features between nests built by the mates of yearling and adult males. There were differences across the three areas in the species of trees used as nest sites, probably reflecting differences in availability. Support for the claim of different reproductive success in relation to quality of territories held by the two age-classes of males is not convincing.
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14

Huang, Wen-Ying, Pei-Chi Lee, Jaw-Cherng Hsu, Yu-Ru Lin, Hui-Ju Chen, and Yung-Sheng Lin. "Effects of Water Quality on Dissolution of Yerba Mate Extract Powders." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/768742.

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Yerba mate tea is known as one of the most popular nonalcoholic beverages favoured by South Americans due to its nutrition facts and medicinal properties. The processing of yerba mate tea is found to affect the properties of its final forms. This study presents an investigation into the effects of water sources on the dissolution of yerba mate extract powders. Comparisons were conducted between yerba mate teas prepared by dissolving yerba mate extract powders into tap water and deionized water. Topics to be explored in this work are the major compositions and antioxidant activities, including total phenol content, reducing power, DPPH scavenging activity, and ABTS+• scavenging capacity. It is indicated that there is little difference for antioxidant activities and major constituents of yerba mate teas between both water sources. However, a deeper color is seen in the tap water case, resulting from the reaction between tannic acid and ions. This research finding can be treated as a way to benefit the yerba mate tea processing for applications.
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15

Hagen, Edward H., and Nicole Hess. "Sweet savage love: FA, BO, and SES in the EEA." Behavioral and Brain Sciences 23, no. 4 (August 2000): 604–5. http://dx.doi.org/10.1017/s0140525x0042337x.

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Proxies of mate value must be evolutionarily salient. Gangestad & Simpson (G&S) have made a good case that fluctuating asymmetry is an important proxy of male mate value that correlates well with genetic and developmental quality. The use of financial variables as proxies for male investment ability by Gangestad, Simpson, and virtually every other investigator of human mating in evolutionary perspective, is, however, more problematic.
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16

Van Den Broek, Eva M. F., and Peter M. Todd. "Evolution of rhythm as an indicator of mate quality." Musicae Scientiae 13, no. 2_suppl (September 2009): 369–86. http://dx.doi.org/10.1177/1029864909013002161.

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Regular rhythmic repetition is a basic element of music in all human cultures and appears in numerous animal courtship signals. We propose that rhythm can function in courtship displays as an indicator of underlying mate quality. We constructed a model to explore whether regularly repeating patterns can serve as amplifiers of the performer's underlying neural quality. Our co-evolutionary simulation comprises male “songs” and female preferences, represented by bit strings. Males produce songs by copying their inborn template with some noise, depending on their quality. The females in turn assess male quality by comparing the male song to their own template. Our model shows that rhythmic songs enable greater discrimination with regard to quality than non-rhythmic songs under a variety of circumstances, thereby implying that rhythmic signals may evolve as useful mate quality indicators.
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17

Webb, Amy, and Maryanne L. Fisher. "DISTRIBUTION OF RESOURCES TO PANHANDLERS AS A MALE DISPLAY OF POTENTIAL MATE QUALITY." Human Ethology Bulletin 33, no. 4 (December 31, 2018): 28–36. http://dx.doi.org/10.22330/heb/334/028-036.

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18

Slagsvold, Tore, and Thomas Drevon. "Female pied flycatchers trade between male quality and mating status in mate choice." Proceedings of the Royal Society of London. Series B: Biological Sciences 266, no. 1422 (May 7, 1999): 917–21. http://dx.doi.org/10.1098/rspb.1999.0724.

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19

Ruther, Joachim, Michael Matschke, Leif-Alexander Garbe, and Sven Steiner. "Quantity matters: male sex pheromone signals mate quality in the parasitic waspNasonia vitripennis." Proceedings of the Royal Society B: Biological Sciences 276, no. 1671 (June 17, 2009): 3303–10. http://dx.doi.org/10.1098/rspb.2009.0738.

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20

Cronk, Lee, and Bria Dunham. "Amounts Spent on Engagement Rings Reflect Aspects of Male and Female Mate Quality." Human Nature 18, no. 4 (September 27, 2007): 329–33. http://dx.doi.org/10.1007/s12110-007-9018-9.

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21

MARTÍN, J., and P. LÓPEZ. "Links between male quality, male chemical signals, and female mate choice in Iberian Rock Lizards." Functional Ecology 20, no. 6 (December 2006): 1087–96. http://dx.doi.org/10.1111/j.1365-2435.2006.01183.x.

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22

McNamara, John M., Pär Forslund, and Alison Lang. "An ESS model for divorce strategies in birds." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 354, no. 1380 (January 29, 1999): 223–36. http://dx.doi.org/10.1098/rstb.1999.0374.

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We present a theoretical investigation of divorce. Arguments are couched in terms of birds, but should be applicable to other groups of organisms. We model a population in which there is a range of both male and female qualities, and decisions on whether to divorce are made by both members of a breeding pair. The reproductive success of a pair is additive in male and female qualities in the baseline case, but we also consider the effect of quality interactions. The availability of new mates depends on the divorce strategy of all population members. We allow for the possibility that mate choice is associative in quality, although we do not explicitly model the mate choice process. Using a game–theoretical model which incorporates these factors we investigate the following issues: the form of the evolutionary stable strategy, and the implications of this strategy for quality correlations in breeding pairs and for the distribution of qualities among unpaired individuals; divorce rates, reproductive success and mate quality changes over the lifetime of an individual, and the dependence of these qualtities on the individual's quality; mean population divorce rates and their dependence on costs of divorce, longevity and the extent of quality variation in the two sexes; initiators of divorce and reproductive success before and after divorce.
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23

Robart, Ashley R. "Effect of mate size on maternal reproductive effort in the convict cichlid Amatitlania siquia." Current Zoology 58, no. 1 (February 1, 2012): 66–72. http://dx.doi.org/10.1093/czoolo/58.1.66.

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Abstract The differential allocation hypothesis predicts individuals will increase their reproductive investment when mated to a high quality partner. In many species of fish with biparental care females prefer large males due to the males’ greater ability to raise more offspring to independence. I examined the relationship between mate quality, parental care and number of offspring in a natural population of convict cichlids Amatitlania siquia. The frequency of frontal displays by females was positively correlated with male standard length. Additionally, as males increased in length relative to their mate, females increased the frequency of chases towards predators, while males decreased the number of displays towards brood predators. This trade-off in parental effort within a pair due to mate quality is a key prediction of differential allocation. The number of offspring was correlated with male, but not female, standard length. These results support the differential allocation hypothesis in that females offered more parental care to offspring of a larger male, while their mates decreased the amount of care they provided. Additionally, females benefited in terms of number of offspring by pairing with higher quality mates. Increased female investment may provide an incentive to ensure male care and maintain pair bonding, which could lead to greater reproductive success through increased offspring survival.
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24

Wiegmann, Daniel D., Lisa M. Angeloni, Steven M. Seubert, and J. Gordon. "Mate choice decisions by searchers." Current Zoology 59, no. 2 (April 1, 2013): 184–99. http://dx.doi.org/10.1093/czoolo/59.2.184.

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Abstract For more than two decades rudimentary versions of the fixed sample and sequential search strategies have provided the primary theoretical foundation for the study of mate choice decisions by searchers. The theory that surrounds these models has expanded markedly over this time period. In this paper, we review and extend results derived from these models, with a focus on the empirical analysis of searcher behavior. The basic models are impractical for empirical purposes because they rely on the assumption that searchers—and, for applied purposes, researchers—assess prospective mates based on their quality, the fitness consequences of mate choice decisions. Here we expound versions of the models that are more empirically useful, reformulated to reflect decisions based on male phenotypic characters. For some organisms, it may be possible to use preference functions to derive predictions from the reformulated models and thereby avoid difficulties associated with the measurement of male quality per se. But predictions derived from the two models are difficult to differentiate empirically, regardless of how the models are formulated. Here we develop ideas that illustrate how this goal might be accomplished. In addition, we clarify how the variability of male quality should be evaluated and we extend what is known about how this variability influences searcher behavior under each model. More general difficulties associated with the empirical study of mate choice decisions by searchers are also discussed.
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25

Suzuki, Yutaro, Chiaki Yasuda, Fumio Takeshita, and Satoshi Wada. "Male mate choice and male–male competition in the hermit crab Pagurus nigrofascia: importance of female quality." Marine Biology 159, no. 9 (June 26, 2012): 1991–96. http://dx.doi.org/10.1007/s00227-012-1986-6.

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26

Cotar, Codina, John M. McNamara, E. J. Collins, and Alasdair I. Houston. "Should females prefer to mate with low-quality males?" Journal of Theoretical Biology 254, no. 3 (October 2008): 561–67. http://dx.doi.org/10.1016/j.jtbi.2008.06.015.

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27

Weidmann, Uli. "Plumage Quality and Mate Choice in Mallards (Anas Platyrhynchos)." Behaviour 115, no. 1-2 (1990): 127–41. http://dx.doi.org/10.1163/156853990x00329.

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AbstractThe suspected relevance of plumage quality of drakes for the choice of mates by ducks has been confirmed in a series of experiments. Drakes were ranked according to the extent of naturally occurring blemishes (deviations from the plumage of an ideal drake) and introduced, two at a time, to a resident group of female "adjudicators", who would choose drakes by following one of them and/or by performing aggressive acts against one or both. We could predict the outcome in almost every case. In other experiments we could influence female choice by making attractive drakes ugly or unattractive ones more beautiful by means of staining and bleaching. The success in these experiments of isolating the effects of plumage quality from the many other factors which usually influence mate choice in females was a consequence of the drakes' apparent lack of interest in the females to whose pen they were introduced for a short time only. When several females chose the same good looking male, intense rivalry and aggressive behaviour occurred among the females. The possible effect of such rivalry on female mate choice was briefly examined; it appeared to be unimportant in our experiments.
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28

Durães, Renata, Bette A. Loiselle, Patricia G. Parker, and John G. Blake. "Female mate choice across spatial scales: influence of lek and male attributes on mating success of blue-crowned manakins." Proceedings of the Royal Society B: Biological Sciences 276, no. 1663 (February 25, 2009): 1875–81. http://dx.doi.org/10.1098/rspb.2008.1752.

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Lekking males compete for females within and among leks, yet female choice is expected to work differently at each of these spatial scales. We used paternity analyses to examine how lek versus male attributes influence mate choice in the blue-crowned manakin Lepidothrix coronata . We tested the hypotheses that females prefer (i) to mate at larger leks where a larger number of potential mates can be assessed, (ii) to mate with unrelated or highly heterozygous males expected to produce high-quality offspring, (iii) to mate with males that display at higher rates, and that (iv) display honestly reflects male genetic quality. Our results show that (i) males at larger leks are not more likely to sire young, although females nesting close to small leks travel further to reach larger leks, (ii) siring males are not less related to females or more heterozygous than expected, (iii) within a lek, high-display males are more likely to sire young, and (iv) both male heterozygosity and display rate increased with lek size, and as a result display does not reliably reflect male genetic quality across leks. We suggest that female mate choice in this species is probably driven by a Fisherian process rather than adaptive genetic benefits.
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29

Pfennig, Karin S. "The evolution of mate choice and the potential for conflict between species and mate–quality recognition." Proceedings of the Royal Society of London. Series B: Biological Sciences 265, no. 1407 (September 22, 1998): 1743–48. http://dx.doi.org/10.1098/rspb.1998.0497.

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30

Fitzpatrick, Courtney L., and Maria R. Servedio. "Male mate choice, male quality, and the potential for sexual selection on female traits under polygyny." Evolution 71, no. 1 (November 29, 2016): 174–83. http://dx.doi.org/10.1111/evo.13107.

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31

Gori, David F. "Adjustment of Parental Investment with Mate Quality by Male Yellow-Headed Blackbirds (Xanthocephalus xanthocephalus)." Auk 105, no. 4 (October 1, 1988): 672–80. http://dx.doi.org/10.1093/auk/105.4.672.

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Abstract By removing young from the nests of competent females, I tested whether male Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) could assess the parental competence of mates and adjust their parental investment accordingly. The purpose of this experimental reduction was to equalize the number of young in nests of parentally competent and incompetent females in order to control for the effect of offspring number on parental investment by males. Males had a greater probability of feeding at nests of competent-reduced females and they fed at a higher rate than they did at nests of incompetent females. The latter broods were fed only when nests belonging to competent females were unavailable. Males adjust their parental investment with mate quality independent of the number of young in nests. To explain this preference, I constructed functions to relate the amount of paternal investment (i.e. male feeding rate) to the number of young fledged from nests and the fledging mass of young. The latter are two components of male reproductive success and, therefore, estimates of the "return" on a male's parental investment. Male feeding had no effect on the number of young fledged from starvation-reduced or experimental nests. However, the fledging mass of young increased more when males helped competent females than when incompetent females were helped. Thus male preference for helping competent females may result because the return per unit of their investment is greater at these nests.
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32

Sandvik, Maria, Gunilla Rosenqvist, and Anders Berglund. "Male and female mate choice affects offspring quality in a sex–role–reversed pipefish." Proceedings of the Royal Society of London. Series B: Biological Sciences 267, no. 1458 (November 7, 2000): 2151–55. http://dx.doi.org/10.1098/rspb.2000.1262.

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33

Pratt, Ann E., Donald J. Shure, Denson K. McLain, and Katrina Banderet. "Male and Female Soldier Beetles Relax Choice for Mate Quality Across Daily Courtship Periods." Ethology 123, no. 3 (February 14, 2017): 175–87. http://dx.doi.org/10.1111/eth.12585.

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34

Morina, Daniel L., Steve Demarais, Bronson K. Strickland, and Jamie E. Larson. "While males fight, females choose: male phenotypic quality informs female mate choice in mammals." Animal Behaviour 138 (April 2018): 69–74. http://dx.doi.org/10.1016/j.anbehav.2018.02.004.

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35

Kvarnemo, Charlotta, and Leigh W. Simmons. "Variance in female quality, operational sex ratio and male mate choice in a bushcricket." Behavioral Ecology and Sociobiology 45, no. 3-4 (March 23, 1999): 245–52. http://dx.doi.org/10.1007/s002650050559.

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36

Sprengers, Ellen, Erik Matthysen, Stefan Van Dongen, and André Dhondt. "Mate Selection by Male Winter Moths Operophtera Brumata (Lepidoptera, Geometrldae): Adaptive Male Choice or Female Control?" Behaviour 135, no. 1 (1998): 29–42. http://dx.doi.org/10.1163/156853998793066401.

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AbstractMate choice is an important component of sexual selection. It is expected to evolve if the benefits of choice outweigh the costs. Yet, the relative importance of costs and benefits in the evolution of mate choice remain poorly understood. In this study we present experimental evidence for adaptive mate choice by males, but not females, in the winter moth. In a series of experiments we show that: (a) males have a higher probability of attempting to copulate, and consequently also a higher probability to copulate with a larger, more fecund female; (b) if males are given the choice between two females they are more likely to copulate with the larger female; and (c) females do not seem to show any mate discrimination. A sample of winter moths collected in copula in the field did not show any assortative mating for body size. This is the first demonstration of male choice in a moth species with chemical communication. This choice is possibly based on variation in female pheromone quality and/or quantity. We argue that the relatively higher variation in female quality and the limited number of male matings probably have led to male choosiness despite a strongly male biased operational sex ratio. This is consistent with recent studies indicating that choice and competition may occur more frequently in the same sex than previously thought.
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37

Cain, Kristal E. "Mates of Competitive Females: The Relationships between Female Aggression, Mate Quality, and Parental Care." Advances in Zoology 2014 (June 30, 2014): 1–8. http://dx.doi.org/10.1155/2014/319567.

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Though rarely mate-limited, females in a wide variety of species express traits commonly associated with mate competition in males. Recent research has shown that these competitive traits (ornaments, armaments, and intense aggression) often function in the context of female-female competition for nonsexual reproductive resources and are often positively related to reproductive success. Increased success could occur because competitive females acquire limited ecological resources (nest sites, territories, etc.) or because they pair with high quality males, that is, older, more ornamented, or more parental males. Further, males paired with aggressive/low care females may compensate by increasing their paternal efforts. Here, I examined patterns of social pairing and parental care in free-living dark-eyed juncos (Junco hyemalis), a biparental songbird. I found no detectable relationship between female competitive behavior (aggression) and male quality (age, size, or ornamentation) or male provisioning. Thus, neither of the mate choice hypotheses (females compete for males or males prefer aggressive females) was supported. Instead, these results suggest that females compete for nonsexual resources and mate quality is a secondary consideration. I also found a negative relationship between male and female provisioning rates, suggesting that partners adjust their level of parental effort in response to their partner’s efforts.
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38

Pimentel, Nathalia, Kelen Haygert Lencina, Marina Favarin Pedroso, Tamires Manfio Somavilla, and Dilson Antônio Bisognin. "Morphophysiological quality of yerba mate plantlets produced by mini-cuttings." Semina: Ciências Agrárias 38, no. 6 (November 23, 2017): 3515. http://dx.doi.org/10.5433/1679-0359.2017v38n6p3515.

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The objective of this study was to evaluate the morphophysiological quality of yerba mate plantlets (Ilex paraguariensis A. St.-Hil.) produced by mini-cutting at four different times of year and cultivated in different containers. For the rooting of mini-cuttings, shoots of four yerba mate clones were collected four times during the year (April, July and October 2014 and January, 2015), cut into single-budded mini-cuttings and planted in equal proportions of pine bark-based commercial substrate, vermiculite and coarse sand. After 60 days of cultivation in a wet chamber, the rooted mini-cuttings were transferred to different containers: a 100 cm³ rigid polyethylene tube container and 500, 1500 and 3000 cm3 polyethylene bags containing pine bark-based commercial substrate and underground soil (2:1 v/v). A completely randomized design was used in a 4 x 4 factorial scheme, with five replications ranging from 5 to 20 mini-cuttings per experimental unit. The plantlets were evaluated for survival percentage, shoot height, stem diameter, shoot height/stem diameter ratio and number of leaves at 30, 60, 90 and 120 days of cultivation. At 120 days of cultivation, 10 plantlets from each treatment were randomly picked to evaluate shoot and root dry mass, Dickson quality index, shoot height, surface area, total volume and number of root tips. The best combinations of shoot height, length, surface area, total volume and number of root tips and Dickson quality index were found in plantlets produced in July, 2014, followed by plantlets produced in October,2014 and January, 2015. The polyethylene bags allowed the production of yerba mate plantlets with satisfactory quality of shoot and roots, regardless of the volume. Yerba mate plantlets can be produced by mini-cutting from July to January in polyethylene bags.
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39

Schlaepfer, Martin A., and Jeremy N. McNeil. "Are virgin male lepidopterans more successful in mate acquisition than previously mated individuals? A study of the European corn borer, Ostrinia nubilalis (Lepidoptera: Pyralidae)." Canadian Journal of Zoology 78, no. 11 (November 1, 2000): 2045–50. http://dx.doi.org/10.1139/z00-147.

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Male phenotypic quality may significantly influence female reproductive success. Depletion of sperm and accessory-gland secretions with successive matings represents a reduction in male phenotypic quality and is known to decrease female reproductive output in several lepidopteran species, including the European corn borer (ECB), Ostrinia nubilalis. We therefore tested the hypothesis that female ECBs, given the simultaneous choice of an experienced male and a virgin male, preferentially mate with the virgin. However, contrary to prediction, females mated significantly more often with experienced males. Experienced males were significantly lighter than their virgin counterparts, the result of producing three spermatophores that were transferred during previous matings. However, differences in body mass or wing-loading did not appear to play an important role, for within either the experienced or virgin classes, heavier males obtained more matings than lighter ones. Why would females prefer to mate with sexually experienced males? Females may not be exercising any precopulatory choice, and the greater mating success of previously mated males may be related to previous experience. Behavioral observations, however, suggest that female choice occurred. In the process of selecting experienced males, the number of consecutive matings was correlated with low fluctuating asymmetry of the forewing (R-L). This suggests that males who acquired 3 consecutive matings were of above-average quality and were actively selected by females.
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40

Preston, B. T., I. R. Stevenson, J. M. Pemberton, D. W. Coltman, and K. Wilson. "Male mate choice influences female promiscuity in Soay sheep." Proceedings of the Royal Society B: Biological Sciences 272, no. 1561 (February 21, 2005): 365–73. http://dx.doi.org/10.1098/rspb.2004.2977.

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In most animal species, males are predicted to compete for reproductive opportunities, while females are expected to choose between potential mates. However, when males' rate of reproduction is constrained, or females vary widely in ‘quality’, male mate choice is also predicted to occur. Such conditions exist in the promiscuous mating system of feral Soay sheep on St Kilda, Scotland, where a highly synchronized mating season, intense sperm competition and limitations on sperm production constrain males' potential reproductive rate, and females vary substantially in their ability to produce successful offspring. We show that, consistent with predictions, competitive rams focus their mating activity and siring success towards heavier females with higher inclusive fitness. To our knowledge, this is the first time that male mate choice has been identified and shown to lead to assortative patterns of parentage in a natural mammalian system, and occurs despite fierce male–male competition for mates. An additional consequence of assortative mating in this population is that lighter females experience a series of unstable consorts with less adept rams, and hence are mated by a greater number of males during their oestrus. We have thus also identified a novel male–driven mechanism that generates variation in female promiscuity, which suggests that the high levels of female promiscuity in this system are not part of an daptive female tactic to intensify post–copulatory competition between males.
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41

MAZALOV, VLADIMIR, and ANNA FALKO. "NASH EQUILIBRIUM IN TWO-SIDED MATE CHOICE PROBLEM." International Game Theory Review 10, no. 04 (December 2008): 421–35. http://dx.doi.org/10.1142/s0219198908002023.

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We consider a two-sided search model in which individuals from two distinct populations would like to form a long-term relationship with a member of the other population. The individual choice is determined by the quality of the partner. Initially the quality of individuals in the population is uniform. At every stage the individuals randomly matched from their populations recognize the quality of the partner. If they accept each other they create a couple and leave the game. The partner's quality is the payoff. Unmatched players go to the next stage. At the last stage the individuals accept any partner. Each player aims to maximize her/his expected payoff. In this paper explicit formulas for Nash equilibrium strategies are derived. Also, the model with incoming individuals is analyzed.
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42

Dale, Svein, and Tore Slagsvold. "Mate Choice On Multiple Cues, Decision Rules and Sampling Strategies in Female Pied Flycatchers." Behaviour 133, no. 11-12 (1996): 903–44. http://dx.doi.org/10.1163/156853996x00305.

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The mate sampling behaviour and mate choice of 125 individually marked female pied flycatchers, Ficedula hypoleuca, was recorded with video cameras. Females visited on average 3.1 males within a period of less than 1 day. Females had independent preferences for unmated males, brightly coloured males and males with nestboxes that had small entrance holes; 77-86% of the females chose a male that was the best one among the males sampled in relation to at least one of these factors. When having a choice only on mating status 91 % of the females made a correct choice; corresponding values for plumage colour and nest site quality were 64% and 73%, respectively. Females made 'mistakes' more often when differences between males were small, at least regarding plumage colour. When given simultaneous choices on two cues, females gave priority to the cue with the largest differences between males. Females returned to some males before rejecting them and these males tended to have brighter plumage or better nestboxes than males that were visited only once. The final choice of mate was not related to the order in the sequence of males visited, suggesting that many females used a pool-comparison strategy. However, about one third of the females visited only one male, and one third sampled males in a way conforming to threshold or sequential comparison strategies as well as a pool-comparison strategy. The temporal pattern of female visits suggested that they either sampled males at once and then settled, or that they visited one male repeatedly and made occasional visits to other males, often after a long period of residency. Twenty-eight females (22%) made visits to other males after they had settled (i.e. started nest building) with one male, and this resulted in mate switching in seven cases (6% of all females). These results show that females compare and choose mates on the basis of at least three different cues, and that most females are able to pick out the best or one of the best males among those sampled. However, females sample few males, probably because of competition between females for a mate, so that they must sometimes accept dull or mated males, or males with poor-quality nest sites. Limited choice reduces the strength of sexual selection even when female preferences are strong. This may help explain why plumage colour variation and polygyny exist in the pied flycatcher.
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43

Wedell, Nina. "Mate Quality Affects Reproductive Effort in a Paternally Investing Species." American Naturalist 148, no. 6 (December 1996): 1075–88. http://dx.doi.org/10.1086/285972.

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44

Haaland, Thomas R., Jonathan Wright, Bram Kuijper, and Irja I. Ratikainen. "Differential Allocation Revisited: When Should Mate Quality Affect Parental Investment?" American Naturalist 190, no. 4 (October 2017): 534–46. http://dx.doi.org/10.1086/693484.

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45

de Zawadzki, Andressa, Leandro O. R. Arrivetti, Marília P. Vidal, Jonatan R. Catai, Renata T. Nassu, Rymer R. Tullio, Alexandre Berndt, et al. "Mate extract as feed additive for improvement of beef quality." Food Research International 99 (September 2017): 336–47. http://dx.doi.org/10.1016/j.foodres.2017.05.033.

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46

Hasegawa, Masaru, Emi Arai, Mamoru Watanabe, and Masahiko Nakamura. "Female mate choice based on territory quality in barn swallows." Journal of Ethology 30, no. 1 (October 21, 2011): 143–50. http://dx.doi.org/10.1007/s10164-011-0307-8.

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47

Harris, W. Edwin, and Tobias Uller. "Reproductive investment when mate quality varies: differential allocation versus reproductive compensation." Philosophical Transactions of the Royal Society B: Biological Sciences 364, no. 1520 (March 12, 2009): 1039–48. http://dx.doi.org/10.1098/rstb.2008.0299.

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Reproductive investment decisions form an integral part of life-history biology. Selection frequently favours plasticity in investment that can generate maternal effects on offspring development. For example, if females differentially allocate resources based on mate attractiveness or quality, this can create a non-genetic link between mate attractiveness and offspring fitness with potential consequences for ecological and evolutionary dynamics. It is therefore important to understand under what conditions differential investment into offspring in relation to male quality is expected to occur and the direction of the effect. Two opposite predictions, increased investment into offspring produced with high-quality mates (differential allocation (DA)) and increased investment with low-quality males (reproductive compensation (RC)) have been suggested but no formal theoretical treatment justifying the assumptions underlying these two hypotheses has been conducted to date. Here, we used a state-based approach to investigate the circumstances under which the variation in mate quality results in differential female investment into offspring and how this interacts with female energetic resource levels. We found that a pattern of increased investment when mating with high-quality mates (i.e. DA) was the most common optimal investment strategy for females in our model. By contrast, increased investment when mating with low-quality mates (i.e. RC) was predicted only when the relative impact of parental investment on offspring quality was low. Finally, we found that the specific pattern of investment in relation to male quality depends on female energetic state, the likelihood for future mating opportunities and the expected future distribution of mate quality. Thus, the female's age and body condition should be important factors mediating DA and RC, which may help to explain the equivocal results of empirical studies.
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48

Lifjeld, Jan T., and Tore Slagsvold. "Incomplete Female Knowledge of Male Quality May Explain Variation in Extra-Pair Paternity in Birds." Behaviour 134, no. 5-6 (1997): 353–71. http://dx.doi.org/10.1163/156853997x00584.

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AbstractWe present and discuss an hypothesis to explain inter- and intraspecific variation in levels of extra-pair paternity (EPP) in birds. In species with biparental care, females may be willing to engage in extra-pair copulation (EPC) to improve the genetic quality of the offspring. However, it may be costly to sample males and difficult to assess their genetic quality. Hence, we suggest that variation occurs in the extent of such knowledge between females, causing variation in the extent to which they are willing to engage in EPC. From the hypothesis we present nine predictions on occurrence of EPP in birds, e.g. cuckolders should mainly be resident, close neighbours; rate of EPP should be positively related to breeding density, to rate of male intrusion, to female opportunity to assess male quality from competitive interactions between males, to early arrival time of females relative to time of egg laying, and to breeding synchrony. Finally, we discuss implications on male behaviour. We suggest a new function of male mate guarding, namely that mate guarding is a means to prevent the social mate from obtaining essential information about the quality of potential extra-pair mates.
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Friedl, Thomas W. P., and Georg M. Klump. "Extrapair Fertilizations in Red Bishops (Euplectes Orix): Do Females Follow Conditional Extrapair Strategies?" Auk 122, no. 1 (January 1, 2005): 57–70. http://dx.doi.org/10.1093/auk/122.1.57.

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Abstract Although many studies have revealed differences in patterns of extrapair paternity between species and between populations of the same species, possible differences in female extrapair behavior within populations have received far less attention. Here, we propose and test the hypothesis that females of the highly polygynous Red Bishop (Euplectes orix) follow two different extrapair strategies, with benefits of extrapair copulations depending on the quality of their social mate (”conditional-extrapair-strategy hypothesis”). In particular, we propose that females mated to low-quality males enhance the genetic quality of their offspring by performing extrapair copulations with males of higher quality than their social mate (in accordance with the good-genes hypothesis), whereas females mated to high-quality males perform extrapair copulations as insurance against temporary infertility of their social mate caused by sperm depletion due to frequent copulations (in accordance with the fertility-insurance hypothesis). Several predictions derived from our hypothesis, regarding differences in frequency and distribution of both unhatched eggs and extrapair young between high-quality and low-quality males, are tested and shown to be supported. Most importantly, hatching failures occurred more often in territories of high-quality males than in those of low-quality males, and the proportion of unhatched eggs within the territory was positively correlated to breeding synchrony for high-quality males only. Those results suggest that sperm depletion is a risk for females mated to high-quality males with many mating opportunities. The fact that broods of high-quality males without unhatched eggs had a significantly higher proportion of extrapair young than broods of high-quality males with unhatched eggs is consistent with the hypothesis that females mated to high-quality males were successful in performing EPCs as insurance against temporary infertility of their social mates. Furthermore, genetic fathers of extrapair young hatched in territories of low-quality males were found to be of higher quality than the corresponding social fathers, whereas no difference in quality was found between genetic and social fathers of extrapair young hatched in territories of high-quality males. Although we cannot exclude the possibility that the observed pattern was a result of females mating randomly from within the available pool of extrapair males, it is in accordance with our prediction that females mated to low-quality males perform extrapair copulations with males of higher quality than their social mate to enhance offspring fitness. Overall, the data presented here suggest that females within our study colony adjusted their extrapair behavior to the quality of their social mate, even if we cannot entirely rule out alternative explanations for some of the results obtained. Thus, the study provides support for the conditional-extrapair-strategy hypothesis, which states that within populations, females may follow different extrapair strategies to gain different benefits. Fertilizaciones Extra-pareja en Euplectes orix: ¿Siguen las Hembras Estrategias Extra-pareja Condicionales?
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Valencia-Aguilar, Anyelet, Kelly R. Zamudio, Célio F. B. Haddad, Steve M. Bogdanowicz, and Cynthia P. A. Prado. "Show me you care: female mate choice based on egg attendance rather than male or territorial traits." Behavioral Ecology 31, no. 4 (May 31, 2020): 1054–64. http://dx.doi.org/10.1093/beheco/araa051.

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Abstract Female mate choice is often based on male traits, including signals or behaviors, and/or the quality of a male’s territory. In species with obligate paternal care, where care directly affects offspring survival, females may also base their mate choices on the quality of a sire’s care. Here, we quantified male reproductive success in a natural population of the glass frog Hyalinobatrachium cappellei, a species with male parental care, to determine the influence of territory quality, male traits, and paternal care behaviors on female mate choice. We found that attending males have a higher chance of gaining new clutches than nonattending males. Our results indicate that females do not select males based only on body condition, calling persistence, or territory traits. Instead, our findings support the hypothesis that females choose males based on care status. Indeed, males already attending a clutch were 70% more likely to obtain another clutch, and the time to acquire an additional clutch was significantly shorter. We also found that males adjust their parental care effort in response to genetic relatedness by caring only for their own offspring; however, remaining close to unrelated clutches serves as a strategy to attract females and increase chances of successful mating. Thus, males that establish territories that already contain clutches benefit from the signal eggs provide to females.
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