scholarly journals Influence of lighting environment on social preferences in sticklebacks from two different photic habitats. II. shoaling and mate preferences of lab-bred fishes

2021 ◽  
Author(s):  
Meike Hiermes ◽  
Michael B Marder ◽  
Stephanie Reher ◽  
Ingolf P Rick ◽  
Simon Vitt ◽  
...  
Keyword(s):  
Gasterosteus Aculeatus ◽  
Social Preferences ◽  
Uv Light ◽  
Habitat Type ◽  
Short Wave ◽  
Mate Preferences ◽  
Mate Preference ◽  
Clear Water ◽  
Different Populations ◽  
Absent Condition

Abstract Different environmental conditions may lead to diverse morphological, behavioral and physiological adaptations of different populations of the same species. Lighting conditions, for example, vary vastly especially between aquatic habitats, and have been shown to elicit adaptations. The availability of short-wave ultraviolet (UV) light is especially fluctuating, as UV wavelengths are attenuated strongly depending on water properties. The island of North Uist, Scotland, comprises two differential habitat types, tea-stained and clear-water lakes, varying considerably in UV transmission. In previous studies, wild-caught three-spined stickleback Gasterosteus aculeatus populations (three populations of each habitat type) were tested with respect to their shoaling and mate preferences for fish viewed under UV-present and UV-absent conditions. The results revealed a habitat-dependent preference of UV cues during shoal choice (tea-stained populations: preference for UV-absent condition in tea-stained water; clear-water populations: no preference in clear-water) but an overall preference for UV-present conditions during mate choice. To assess genetic influences on these behavioral patterns, similar experiments were conducted with lab-bred F1-generations of the same stickleback populations that were raised in a common environment (i.e. standardized clear-water conditions). Offspring of sticklebacks from tea-stained lakes tended to prefer shoals viewed under UV-absent conditions (only in tea-stained water), while sticklebacks from clear-water lakes showed a significant preference for the shoal viewed under UV-present conditions in clear-water but not in tea-stained water. Mate-preference experiments demonstrated that females from the tea-stained lakes significantly preferred and females from the clear-water lakes preferred by trend the male viewed under UV-present conditions in the clear-water treatment. The results for both shoaling- and mate-preference tests were largely similar for wild-caught and lab-bred sticklebacks, thus hinting at a genetic basis for the preference patterns.

scholarly journals Influence of lighting environment on social preferences in sticklebacks from two different photic habitats. I. mate preferences of wild-caught females

2021 ◽  
Author(s):  
Meike Hiermes ◽  
Stephanie Reher ◽  
Ingolf P Rick ◽  
Theo C M Bakker
Keyword(s):  
Mate Choice ◽  
Gasterosteus Aculeatus ◽  
Social Preferences ◽  
Uv Light ◽  
Gravid Female ◽  
Mate Preferences ◽  
Light Conditions ◽  
Clear Water ◽  
Habitat Types ◽  
Lighting Environment

Abstract Ultraviolet (UV) A signals (320–400 nm) are important in mate choice in numerous species. The sensitivity for UV signals is not only assumed to be costly, but also expected to be a function of the prevailing ecological conditions. Generally, those signals are favored by selection that efficiently reach the receiver. A decisive factor for color signaling is the lighting environment, especially in aquatic habitats, as the visibility of signals, and thus costs and benefits, are instantaneously influenced by it. Although ecological aspects of color signal evolution are relatively well-studied, there is little data on specific effects of environmental UV-light conditions on signaling at these shorter wavelengths. We studied wild-caught gravid female 3-spined sticklebacks Gasterosteus aculeatus of 2 photic habitat types (tea-stained and clear-water lakes), possessing great variation in their UV transmission. In 2 treatments, tea-stained and clear-water, preferences for males viewed under UV-present (UV+) and UV-absent (UV–) conditions were tested. A preference for males under UV+ conditions was found for females from both habitat types, thus stressing the significance of UV signals in stickleback’s mate choice decisions. However, females from both habitat types showed the most pronounced preferences for males under UV+ conditions under clear-water test conditions. Moreover, reflectance measurements revealed that the carotenoid-based orange-red breeding coloration in wild-caught males of both habitat types differed significantly in color intensity (higher in clear-water males) and hue (more red shifted in clear-water males) while no significant differences in UV coloration were found. The differential reflection patterns in longer wavelengths suggest that sticklebacks of both habitat types have adapted to the respective water conditions. Adaptations of UV signals in a sexual context to ambient light conditions in both behavior and coloration seem less evident.

scholarly journals Social preferences across different populations: Meta-analyses on the ultimatum game and dictator game

2021 ◽  
Vol 90 ◽  
pp. 101613
Author(s):  
François Cochard ◽  
Julie Le Gallo ◽  
Nikolaos Georgantzis ◽  
Jean-Christian Tisserand
Keyword(s):  
Social Preferences ◽  
Ultimatum Game ◽  
Dictator Game ◽  
Different Populations ◽  
Meta Analyses

scholarly journals Rapid Identification and Quantitation of Clotrimazole, Miconazole, and Ketokonazole in Pharmaceutical Creams and Ointments by Thin-Layer Chromatography–Densitometry

1996 ◽  
Vol 79 (3) ◽  
pp. 656-660 ◽  
Author(s):  
Utpal Roychowdhury ◽  
Saroj K Das
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Uv Light ◽  
Internal Standard ◽  
Solvent System ◽  
Short Wave ◽  
Rapid Identification ◽  
Pharmaceutical Creams ◽  
Liquid Chromatographic ◽  
Layer Chromatography

Abstract Thin-layer chromatography (TLC)–densitometry was used to separate, identify, and quantitate clotrimazole, miconazole, and ketokonazole (alone or combined with other drugs) in various pharmacopoeial or proprietary creams and ointments. Clotrimazole was extracted from the cream or ointment with ethyl alcohol, and miconazole and ketokonazole were extracted with a mixture of equal volumes of chloroform and isopropyl alcohol. Active ingredients were separated from excipients and other drugs by TLC on a precoated silica gel F254 plate with a solvent system of n-hexane–chloroform–methanol–diethylamine (50 + 40 + 10 + 1, v/v). The 3 azoles were well separated and easily identified in this chromatographic system. The separated azoles were visualized under short-wave UV light and quantitated by scanning densitometry at 220 nm by comparing the integrated areas of samples with those of standard (one azole was used as internal standard for the other). Recoveries from samples spiked with known amounts of azoles were excellent. The method was validated further by comparison with official liquid chromatographic methods.

scholarly journals Does meiotic drive alter male mate preference?

2019 ◽  
Author(s):  
Sam Ronan Finnegan ◽  
Leslie Nitsche ◽  
Matteo Mondani ◽  
M Florencia Camus ◽  
Kevin Fowler ◽  
...  
Keyword(s):  
Low Frequency ◽  
Meiotic Drive ◽  
Mate Preferences ◽  
Mate Preference ◽  
Male Preference ◽  
Male Mate ◽  
A Minor ◽  
The Cost ◽  
Organismal Fitness ◽  
Minor Extent

AbstractMale mate preferences have been demonstrated across a range of species, including the Malaysian stalk-eyed fly, Teleopsis dalmanni. This species is subject to sex-ratio (SR), an X-linked male meiotic driver, which causes the dysfunction of Y-sperm and the production of all-female broods. While there has been work considering female avoidance of meiotic drive males, the mating decisions of drive-bearing males have not been considered previously. Drive males may be less able to bear the cost of choice as SR is associated with a low-frequency inversion that causes reduced organismal fitness. Drive males may also experience weaker selection for preference maintenance if they are avoided by females. Using binary choice trials, across two experiments, we confirmed male preference for large (fecund) females but found no evidence that the strength of male preference differs between drive and standard males. We showed that large eyespan males displayed strong preference for large females, whereas small eyespan males showed no preference. Taken together, these results suggest that, even though meiotic drive is associated with lower genetic quality, it does not directly interfere with male mate preference among available females. However, as drive males tend to have smaller eyespan (albeit only ~5% on average), this will to a minor extent weaken their strength of preference.

scholarly journals Social learning and human mate preferences: a potential mechanism for generating and maintaining between-population diversity in attraction

2011 ◽  
Vol 366 (1563) ◽  
pp. 366-375 ◽  
Author(s):  
Anthony C. Little ◽  
Benedict C. Jones ◽  
Lisa M. DeBruine ◽  
Christine A. Caldwell
Keyword(s):  
Social Learning ◽  
Mate Preferences ◽  
Population Diversity ◽  
Cross Cultural ◽  
High Status ◽  
Learning Mechanisms ◽  
Human Species ◽  
Cross Cultural Differences ◽  
Physical Traits ◽  
Different Populations

Inspired by studies demonstrating mate-choice copying effects in non-human species, recent studies of attractiveness judgements suggest that social learning also influences human preferences. In the first part of our article, we review evidence for social learning effects on preferences in humans and other animals. In the second part, we present new empirical evidence that social learning not only influences the attractiveness of specific individuals, but can also generalize to judgements of previously unseen individuals possessing similar physical traits. The different conditions represent different populations and, once a preference arises in a population, social learning can lead to the spread of preferences within that population. In the final part of our article, we discuss the theoretical basis for, and possible impact of, biases in social learning whereby individuals may preferentially copy the choices of those with high status or better access to critical information about potential mates. Such biases could mean that the choices of a select few individuals carry the greatest weight, rapidly generating agreement in preferences within a population. Collectively, these issues suggest that social learning mechanisms encourage the spread of preferences for certain traits once they arise within a population and so may explain certain cross-cultural differences.

scholarly journals Female northern grass lizards judge mates by body shape to reinforce local adaptation

2020 ◽  
Author(s):  
Kun Guo ◽  
Chen Chen ◽  
Xiao-Fang Liang ◽  
Yan-Fu Qu ◽  
Xiang Ji
Keyword(s):  
Genetic Differentiation ◽  
Genetic Distance ◽  
Local Adaptation ◽  
Body Shape ◽  
Mate Preferences ◽  
Mate Preference ◽  
Population Divergence ◽  
Female Mate Preference ◽  
Local Adaptations ◽  
Female Mate

Abstract Background: Identifying the factors that contribute to divergence among populations in mate preferences is important for understanding of the manner in which premating reproductive isolation might arise and how this isolation may in turn contribute to the evolutionary process of population divergence. Here, we offered female northern grass lizards (Takydromus septentrionalis) a choice of males between their own population and another four populations to test whether the preferences that females display in the mating trials correlate with phenotypic adaptation to local environments, or to the neutral genetic distance measured by divergence of mitochondrial DNA sequence loci. Results: Females showed a strong preference for native over foreign males. Females that mated with native versus foreign males did not differ from each other in mating latency, or copulation duration. From results of the structural equation modelling we knew that: 1) geographical distance directly contributed to genetic differentiation and environmental dissimilarity; 2) genetic differentiation and environmental dissimilarity indirectly contributed to female mate preference, largely through their effects on morphological divergence; and 3) females judged mates by body shape (appearance) and discriminated more strongly against morphologically less familiar allopatric males.Conclusions: Local adaptation rather than neutral genetic distance influences female mate preference in T. septentrionalis. The tendency to avoid mating with foreign males may indicate that, in T. septentrionalis, local adaptations are more valuable than genetic novelties. Our results highlight the importance of comprehensive studies integrating ecological, molecular and behavioral approaches to understand population divergence in female mate preferences as the consequence of local adaptations.

scholarly journals Contrasting Computational Models of Mate Preference Integration Across 45 Countries

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Daniel Conroy-Beam ◽  
David M. Buss ◽  
Kelly Asao ◽  
Agnieszka Sorokowska ◽  
Piotr Sorokowski ◽  
...  
Keyword(s):  
Computational Models ◽  
Computational Design ◽  
Romantic Partners ◽  
Mate Preferences ◽  
Mate Preference ◽  
Mate Value ◽  
The World ◽  
Power Of Choice ◽  
Mating Psychology ◽  
Human Mating

AbstractHumans express a wide array of ideal mate preferences. Around the world, people desire romantic partners who are intelligent, healthy, kind, physically attractive, wealthy, and more. In order for these ideal preferences to guide the choice of actual romantic partners, human mating psychology must possess a means to integrate information across these many preference dimensions into summaries of the overall mate value of their potential mates. Here we explore the computational design of this mate preference integration process using a large sample of n = 14,487 people from 45 countries around the world. We combine this large cross-cultural sample with agent-based models to compare eight hypothesized models of human mating markets. Across cultures, people higher in mate value appear to experience greater power of choice on the mating market in that they set higher ideal standards, better fulfill their preferences in choice, and pair with higher mate value partners. Furthermore, we find that this cross-culturally universal pattern of mate choice is most consistent with a Euclidean model of mate preference integration.

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