Fitness Benefits of Mate Choice for Compatibility in a Socially Monogamous Species
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{"title"=>"Fitness Benefits of Mate Choice for Compatibility in a Socially Monogamous Species", "type"=>"journal", "authors"=>[{"first_name"=>"Malika", "last_name"=>"Ihle", "scopus_author_id"=>"54789046100"}, {"first_name"=>"Bart", "last_name"=>"Kempenaers", "scopus_author_id"=>"7003563354"}, {"first_name"=>"Wolfgang", "last_name"=>"Forstmeier", "scopus_author_id"=>"55892512200"}], "year"=>2015, "source"=>"PLoS Biology", "identifiers"=>{"sgr"=>"84943168525", "pmid"=>"26366558", "pui"=>"606211057", "issn"=>"15457885", "isbn"=>"10.1371/journal.pbio.1002248", "scopus"=>"2-s2.0-84943168525", "doi"=>"10.1371/journal.pbio.1002248"}, "id"=>"488c3fc1-fdc9-35ff-b4cd-86fa1c42d0f4", "abstract"=>"Research on mate choice has primarily focused on preferences for quality indicators, assuming that all individuals show consensus about who is the most attractive. However, in some species, mating preferences seem largely individual-specific, suggesting that they might target genetic or behavioral compatibility. Few studies have quantified the fitness consequences of allowing versus preventing such idiosyncratic mate choice. Here, we report on an experiment that controls for variation in overall partner quality and show that zebra finch (Taeniopygia guttata) pairs that resulted from free mate choice achieved a 37% higher reproductive success than pairs that were forced to mate. Cross-fostering of freshly laid eggs showed that embryo mortality (before hatching) primarily depended on the identity of the genetic parents, whereas offspring mortality during the rearing period depended on foster-parent identity. Therefore, preventing mate choice should lead to an increase in embryo mortality if mate choice targets genetic compatibility (for embryo viability), and to an increase in offspring mortality if mate choice targets behavioral compatibility (for better rearing). We found that pairs from both treatments showed equal rates of embryo mortality, but chosen pairs were better at raising offspring. These results thus support the behavioral, but not the genetic, compatibility hypothesis. Further exploratory analyses reveal several differences in behavior and fitness components between \"free-choice\" and \"forced\" pairs.", "link"=>"http://www.mendeley.com/research/fitness-benefits-mate-choice-compatibility-socially-monogamous-species-1", "reader_count"=>179, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>7, "Student > Doctoral Student"=>11, "Researcher"=>27, "Student > Ph. D. Student"=>55, "Student > Postgraduate"=>6, "Student > Master"=>28, "Other"=>8, "Student > Bachelor"=>25, "Lecturer"=>4, "Professor"=>5}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>7, "Student > Doctoral Student"=>11, "Researcher"=>27, "Student > Ph. D. Student"=>55, "Student > Postgraduate"=>6, "Student > Master"=>28, "Other"=>8, "Student > Bachelor"=>25, "Lecturer"=>4, "Professor"=>5}, "reader_count_by_subject_area"=>{"Unspecified"=>7, "Agricultural and Biological Sciences"=>126, "Arts and Humanities"=>2, "Business, Management and Accounting"=>1, "Veterinary Science and Veterinary Medicine"=>1, "Computer Science"=>1, "Earth and Planetary Sciences"=>2, "Environmental Science"=>12, "Biochemistry, Genetics and Molecular Biology"=>3, "Medicine and Dentistry"=>3, "Neuroscience"=>8, "Pharmacology, Toxicology and Pharmaceutical Science"=>1, "Psychology"=>6, "Social Sciences"=>6}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>3}, "Social Sciences"=>{"Social Sciences"=>6}, "Psychology"=>{"Psychology"=>6}, "Unspecified"=>{"Unspecified"=>7}, "Environmental Science"=>{"Environmental Science"=>12}, "Pharmacology, Toxicology and Pharmaceutical Science"=>{"Pharmacology, Toxicology and Pharmaceutical Science"=>1}, "Arts and Humanities"=>{"Arts and Humanities"=>2}, "Neuroscience"=>{"Neuroscience"=>8}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>126}, "Computer Science"=>{"Computer Science"=>1}, "Business, Management and Accounting"=>{"Business, Management and Accounting"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>3}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>1}}, "reader_count_by_country"=>{"Romania"=>1, "Hungary"=>1, "United States"=>5, "Japan"=>1, "United Kingdom"=>3, "Switzerland"=>1, "Portugal"=>1, "Canada"=>1, "Austria"=>1, "Czech Republic"=>2, "Netherlands"=>3, "Luxembourg"=>1, "Brazil"=>1, "South Africa"=>2, "Australia"=>3, "France"=>1, "Germany"=>5}, "group_count"=>4}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/2262851"], "description"=>"<p>Parameter estimates and SE were given by the general linear mixed-effect models T1-1 and T1-2. Underlying data for both tests can be found in <a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.s001\" target=\"_blank\">S1 Data</a>.</p>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542641, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>"https://dx.doi.org/10.1371/journal.pbio.1002248.g002", "stats"=>{"downloads"=>3, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Relative_fitness_estimates_mean_SE_of_males_n_84_and_females_n_84_from_chosen_and_non_chosen_pairs_/1542641", "title"=>"Relative fitness estimates (mean ± SE) of males (<i>n</i> = 84) and females (<i>n</i> = 84) from chosen and non-chosen pairs.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-14 04:31:14"}
  • {"files"=>["https://ndownloader.figshare.com/files/2262854"], "description"=>"<p>Parameter estimates and SE were given by the generalized linear mixed-effect models T1-5 and T1-6 based on <i>n</i> = 707 fertilized eggs and <i>n</i> = 594 hatched eggs, respectively. Underlying data for both tests can be found in <a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.s001\" target=\"_blank\">S1 Data</a>.</p>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542644, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>"https://dx.doi.org/10.1371/journal.pbio.1002248.g003", "stats"=>{"downloads"=>7, "page_views"=>22, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Embryo_A_and_offspring_B_mortality_rates_parameter_estimates_mean_177_SE_in_chosen_and_non_chosen_pairs_/1542644", "title"=>"Embryo (A) and offspring (B) mortality rates (parameter estimates [mean ± SE]) in chosen and non-chosen pairs.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-14 04:31:14"}
  • {"files"=>["https://ndownloader.figshare.com/files/2262856"], "description"=>"<p>Chosen pairs (C, <i>n</i> = 46, filled red hearts) resulted from free choice. Non-chosen pairs (NC, <i>n</i> = 38, broken yellow hearts) resulted from force-pairing (by being put together in a cage; experimental stage 2) between individuals that expressed a choice (during experimental stage 1), but who were separated from their initial chosen partner (event symbolized by yellow lightning). Fitness of all pairs was measured during experimental stage 3. The follow-up study (<a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.s012\" target=\"_blank\">S6 Text</a>) took place in spring 2014. All experimental birds had hatched in the summer of 2011.</p>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542646, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>"https://dx.doi.org/10.1371/journal.pbio.1002248.g004", "stats"=>{"downloads"=>1, "page_views"=>14, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Experimental_design_and_timeline_/1542646", "title"=>"Experimental design and timeline.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-14 04:31:14"}
  • {"files"=>["https://ndownloader.figshare.com/files/2262857"], "description"=>"<p>Column clarification and abbreviations:</p><p><b>#</b>: test number given in the main text or supporting texts as T1-#.</p><p><b>Unit</b>: unit of analysis for which sample sizes <i>n</i><sub>total</sub> are given. “MID-yr” (or “FID-yr”) stands for the combination of the male (or female) unique identity number and the year (2012 or 2013).</p><p><b><i>n</i></b><sub><b>yes</b></sub>: the number of yeses for binomial dependent variables.</p><p><b>Dependent variables</b>: WP and EP stand for within and extra-pair, and EPY for extra-pair young. “Disappeared eggs”: eggs that were either buried in the nest material or broken before the end of incubation, or eggs that completely disappeared from the aviary; “Female EPY” is whether or not in a given clutch the female had any extra-pair young; “Brood size” is the number of offspring in a clutch that reached 8 d of age; “Male attendance” is whether or not the male attended its nest on a given daily nest check; “WP or EP copulation” are behaviorally successful copulations as opposed to unsuccessful courtships or copulation attempts.</p><p><b><i>p</i></b> and <b><i>z</i></b>: <i>p</i>-value and <i>z</i>-value for the treatment.</p><p><b>C</b> and <b>NC (±SE)</b>: parameter estimates for chosen and non-chosen pairs and their respective standard errors. For tests with binomial dependent variables, the average of the asymmetrical back-transformed standard errors is given.</p><p><b>Fixed effect</b>: <b>A</b>: year; <b>B</b>: egg number in the laying sequence; <b>C</b>: hatching order (coded 1–8); <b>D</b>: the hatching order of the offspring among those that reached 8 d of age; <b>E</b>: clutch size; <b>F</b>: clutch number for the pair within a year (coded 1–6); <b>G</b>: brood size reached in the previous clutch of the same pair; <b>H</b>: number of offspring in the nest; <b>I</b>: a continuous variable counting up the days from the first day with offspring in that brood, reflecting the average age of the offspring; <b>J</b>: the number of days between the courtship and the day that is 3 d before the start of egg laying (with values ≥5 coded as 5), which means that 0 stands for the peak of fertility of that female; <b>K</b>: pair-bond duration (in days); <b>L</b>: the number of eggs the female laid in the last 5 d; <b>M</b>: the number of minutes after the light went on in the aviary on that day (artificial lights were set to turn on around 40 min before sunrise); <b>N</b>: number of courtships received, for females, or performed, for males. <sup><b>2</b></sup> indicates that a linear and a polynomial term were included using the function ‘poly’ in R. All fixed effects were centered.</p><p><b>Random effects: FID</b>, <b>MID</b>, <b>PID,</b> and <b>CID</b>: the number of levels of random effects; female, male, pair, and clutch identity numbers (where applicable).</p><p><b>Level</b>: level at which the analyses was performed, i.e., how the units were allocated to individuals. <b>Gen</b> stands for genetic parents, <b>Soc</b> for social parents, and <b>Ass</b> for assigned parents, which are genetic when parentage analysis was possible, and social parents when it was not (infertile and disappeared eggs).</p><p>Test #20, #21, and #22 are based on videotaped courtships only to obtain meaningful courtship rates as number of courtships per hour. Nevertheless, those tests were also done on all courtships observed (directly observed and videotaped), and gave similar results (see <a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.s011\" target=\"_blank\">S5 Text</a>).</p><p>Pair bond duration was accounted for in tests #9, #21, #22; i.e., when significant or indicating a trend (see <a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.t002\" target=\"_blank\">Table 2</a>) and for the test #15, #16, #17 for consistency with [<a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.ref053\" target=\"_blank\">53</a>].</p><p>Bold characters in the table emphasize significance (<i>p</i> < 0.05); italic characters indicate trends (<i>p</i> < 0.10), tests of a priori hypotheses are underlined.</p><p><b>The structure of each model (fixed and random effects) is given, as well as the mean estimates (±SE) of each treatment group.</b> Underlying data for each test can be found in <a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.s001\" target=\"_blank\">S1 Data</a>.</p>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542647, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>"https://dx.doi.org/10.1371/journal.pbio.1002248.t001", "stats"=>{"downloads"=>2, "page_views"=>24, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Treatment_effect_on_breeding_parameters_and_sexual_behaviors_/1542647", "title"=>"Treatment effect on breeding parameters and sexual behaviors.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-09-14 04:31:14"}
  • {"files"=>["https://ndownloader.figshare.com/files/2262858"], "description"=>"<p>Estimates are presented on their original scale and reflect changes per 365 d (logit scale for binomial models, and square-root scale for models on courtship rates #20 to #22).</p><p>Bold characters in the table emphasize significance (<i>p</i> < 0.05); italic characters indicate trends (<i>p</i> < 0.10).</p><p>Underlying data for each test can be found in <a href=\"http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002248#pbio.1002248.s001\" target=\"_blank\">S1 Data</a>.</p>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542648, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>"https://dx.doi.org/10.1371/journal.pbio.1002248.t002", "stats"=>{"downloads"=>8, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Effect_of_pair_bond_duration_when_included_as_a_fixed_effect_in_the_models_presented_in_Table_1_/1542648", "title"=>"Effect of pair bond duration when included as a fixed effect in the models presented in Table 1.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-09-14 04:31:14"}
  • {"files"=>["https://ndownloader.figshare.com/files/2262866", "https://ndownloader.figshare.com/files/2262867", "https://ndownloader.figshare.com/files/2262868", "https://ndownloader.figshare.com/files/2262869", "https://ndownloader.figshare.com/files/2262870", "https://ndownloader.figshare.com/files/2262871", "https://ndownloader.figshare.com/files/2262872", "https://ndownloader.figshare.com/files/2262873", "https://ndownloader.figshare.com/files/2262874", "https://ndownloader.figshare.com/files/2262875", "https://ndownloader.figshare.com/files/2262876", "https://ndownloader.figshare.com/files/2262877"], "description"=>"<div><p>Research on mate choice has primarily focused on preferences for quality indicators, assuming that all individuals show consensus about who is the most attractive. However, in some species, mating preferences seem largely individual-specific, suggesting that they might target genetic or behavioral compatibility. Few studies have quantified the fitness consequences of allowing versus preventing such idiosyncratic mate choice. Here, we report on an experiment that controls for variation in overall partner quality and show that zebra finch (<i>Taeniopygia guttata</i>) pairs that resulted from free mate choice achieved a 37% higher reproductive success than pairs that were forced to mate. Cross-fostering of freshly laid eggs showed that embryo mortality (before hatching) primarily depended on the identity of the genetic parents, whereas offspring mortality during the rearing period depended on foster-parent identity. Therefore, preventing mate choice should lead to an increase in embryo mortality if mate choice targets genetic compatibility (for embryo viability), and to an increase in offspring mortality if mate choice targets behavioral compatibility (for better rearing). We found that pairs from both treatments showed equal rates of embryo mortality, but chosen pairs were better at raising offspring. These results thus support the behavioral, but not the genetic, compatibility hypothesis. Further exploratory analyses reveal several differences in behavior and fitness components between “free-choice” and “forced” pairs.</p></div>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542655, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>["https://dx.doi.org/10.1371/journal.pbio.1002248.s001", "https://dx.doi.org/10.1371/journal.pbio.1002248.s002", "https://dx.doi.org/10.1371/journal.pbio.1002248.s003", "https://dx.doi.org/10.1371/journal.pbio.1002248.s004", "https://dx.doi.org/10.1371/journal.pbio.1002248.s005", "https://dx.doi.org/10.1371/journal.pbio.1002248.s006", "https://dx.doi.org/10.1371/journal.pbio.1002248.s007", "https://dx.doi.org/10.1371/journal.pbio.1002248.s008", "https://dx.doi.org/10.1371/journal.pbio.1002248.s009", "https://dx.doi.org/10.1371/journal.pbio.1002248.s010", "https://dx.doi.org/10.1371/journal.pbio.1002248.s011", "https://dx.doi.org/10.1371/journal.pbio.1002248.s012"], "stats"=>{"downloads"=>27, "page_views"=>19, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Fitness_Benefits_of_Mate_Choice_for_Compatibility_in_a_Socially_Monogamous_Species_/1542655", "title"=>"Fitness Benefits of Mate Choice for Compatibility in a Socially Monogamous Species", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2015-09-14 04:31:14"}
  • {"files"=>["https://ndownloader.figshare.com/files/2262850"], "description"=>"<p>This study aims at separating direct from indirect benefits of mate choice for compatibility (red arrow), while experimentally controlling for effects of overall quality (red parentheses).</p>", "links"=>[], "tags"=>["individuals show consensus", "offspring mortality", "compatibility", "Socially Monogamous Species Research", "mate choice", "mate choice targets", "fitness", "embryo mortality"], "article_id"=>1542639, "categories"=>["Uncategorised"], "users"=>["Malika Ihle", "Bart Kempenaers", "Wolfgang Forstmeier"], "doi"=>"https://dx.doi.org/10.1371/journal.pbio.1002248.g001", "stats"=>{"downloads"=>24, "page_views"=>53, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Schematic_overview_of_four_types_of_potential_fitness_benefits_of_mate_choice_/1542639", "title"=>"Schematic overview of four types of potential fitness benefits of mate choice.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-14 04:31:14"}

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Relative Metric

{"start_date"=>"2015-01-01T00:00:00Z", "end_date"=>"2015-12-31T00:00:00Z", "subject_areas"=>[]}
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