Spatial Sorting Drives Morphological Variation in the Invasive Bird, Acridotheris tristis
Publication Date
May 31, 2012
Journal
PLOS ONE
Authors
Cécile Berthouly Salazar, Berndt J. Van Rensburg, Johannes J. Le Roux, Bettine J. Van Vuuren, et al
Volume
7
Issue
5
Pages
e38145
DOI
https://dx.plos.org/10.1371/journal.pone.0038145
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0038145
PubMed
http://www.ncbi.nlm.nih.gov/pubmed/22693591
PubMed Central
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3364963
Europe PMC
http://europepmc.org/abstract/MED/22693591
Web of Science
000305338500094
Scopus
84861654072
Mendeley
http://www.mendeley.com/research/spatial-sorting-drives-morphological-variation-invasive-bird-acridotheris-tristis
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Mendeley | Further Information

{"title"=>"Spatial sorting drives morphological variation in the invasive bird, acridotheris tristis", "type"=>"journal", "authors"=>[{"first_name"=>"Cécile", "last_name"=>"Berthouly-Salazar", "scopus_author_id"=>"55235831600"}, {"first_name"=>"Berndt J.", "last_name"=>"van Rensburg", "scopus_author_id"=>"6701762058"}, {"first_name"=>"Johannes J.", "last_name"=>"Le Roux", "scopus_author_id"=>"15048207800"}, {"first_name"=>"Bettine J.", "last_name"=>"van Vuuren", "scopus_author_id"=>"8702818400"}, {"first_name"=>"Cang", "last_name"=>"Hui", "scopus_author_id"=>"7202876919"}], "year"=>2012, "source"=>"PLoS ONE", "identifiers"=>{"sgr"=>"84861654072", "pmid"=>"22693591", "pui"=>"364923414", "isbn"=>"1932-6203", "scopus"=>"2-s2.0-84861654072", "doi"=>"10.1371/journal.pone.0038145", "issn"=>"19326203"}, "id"=>"1c666a7b-4db5-300a-a76f-6f6ca9f4105e", "abstract"=>"The speed of range expansion in many invasive species is often accelerating because individuals with stronger dispersal abilities are more likely to be found at the range front. This 'spatial sorting' of strong dispersers will drive the acceleration of range expansion. In this study, we test whether the process of spatial sorting is at work in an invasive bird population (Common myna, Acridotheris tristis) in South Africa. Specifically, we sampled individuals across its invasive range and compared morphometric measurements relevant and non-relevant to the dispersal ability. Besides testing for signals of spatial sorting, we further examined the effect of environmental factors on morphological variations. Our results showed that dispersal-relevant traits are significantly correlated with distance from the range core, with strong sexual dimorphism, indicative of sex-biased dispersal. Morphological variations were significant in wing and head traits of females, suggesting females as the primary dispersing sex. In contrast, traits not related to dispersal such as those associated with foraging showed no signs of spatial sorting but were significantly affected by environmental variables such as the vegetation and the intensity of urbanisation. When taken together, our results support the role of spatial sorting in facilitating the expansion of Common myna in South Africa despite its low propensity to disperse in the native range.", "link"=>"http://www.mendeley.com/research/spatial-sorting-drives-morphological-variation-invasive-bird-acridotheris-tristis", "reader_count"=>72, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>1, "Researcher"=>11, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>23, "Student > Postgraduate"=>4, "Student > Master"=>12, "Other"=>3, "Student > Bachelor"=>10, "Lecturer"=>2, "Lecturer > Senior Lecturer"=>1, "Professor"=>2}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>1, "Researcher"=>11, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>23, "Student > Postgraduate"=>4, "Student > Master"=>12, "Other"=>3, "Student > Bachelor"=>10, "Lecturer"=>2, "Lecturer > Senior Lecturer"=>1, "Professor"=>2}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Environmental Science"=>9, "Mathematics"=>4, "Agricultural and Biological Sciences"=>53, "Psychology"=>2, "Social Sciences"=>1}, "reader_count_by_subdiscipline"=>{"Social Sciences"=>{"Social Sciences"=>1}, "Psychology"=>{"Psychology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>53}, "Mathematics"=>{"Mathematics"=>4}, "Unspecified"=>{"Unspecified"=>3}, "Environmental Science"=>{"Environmental Science"=>9}}, "reader_count_by_country"=>{"Venezuela"=>1, "Poland"=>1, "Brazil"=>1, "South Africa"=>2, "Mexico"=>1}, "group_count"=>4}

Scopus | Further Information

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Figshare

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  • {"files"=>["https://ndownloader.figshare.com/files/631023"], "description"=>"<p>Solid bars indicate individuals at the range core (within the 50 km radius of Johannesburg), and open bars indicate individuals at the range margin (beyond 300 km but excluding individuals from the Durban population).</p>", "links"=>[], "tags"=>["histograms", "residuals", "width"], "article_id"=>301512, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Cécile Berthouly-Salazar", "Berndt J. van Rensburg", "Johannes J. Le Roux", "Bettine J. van Vuuren", "Cang Hui"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0038145.g003", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Distribution_histograms_for_traits_residuals_of_female_head_size_A_and_female_bill_width_B_/301512", "title"=>"Distribution histograms for traits residuals of female head size (A) and female bill width (B).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2012-05-31 00:25:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/631170"], "description"=>"<p>NDVI: normalized vegetation index; QDS: quarter degree cell.</p>", "links"=>[], "tags"=>["variables", "sampling"], "article_id"=>301657, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Cécile Berthouly-Salazar", "Berndt J. van Rensburg", "Johannes J. Le Roux", "Bettine J. van Vuuren", "Cang Hui"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0038145.t002", "stats"=>{"downloads"=>1, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Summary_of_environmental_variables_range_in_sampling_sites_/301657", "title"=>"Summary of environmental variables range in sampling sites.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2012-05-31 00:27:37"}
  • {"files"=>["https://ndownloader.figshare.com/files/326479", "https://ndownloader.figshare.com/files/326534", "https://ndownloader.figshare.com/files/326603"], "description"=>"<div><p>The speed of range expansion in many invasive species is often accelerating because individuals with stronger dispersal abilities are more likely to be found at the range front. This ‘spatial sorting’ of strong dispersers will drive the acceleration of range expansion. In this study, we test whether the process of spatial sorting is at work in an invasive bird population (Common myna, <em>Acridotheris tristis</em>) in South Africa. Specifically, we sampled individuals across its invasive range and compared morphometric measurements relevant and non-relevant to the dispersal ability. Besides testing for signals of spatial sorting, we further examined the effect of environmental factors on morphological variations. Our results showed that dispersal-relevant traits are significantly correlated with distance from the range core, with strong sexual dimorphism, indicative of sex-biased dispersal. Morphological variations were significant in wing and head traits of females, suggesting females as the primary dispersing sex. In contrast, traits not related to dispersal such as those associated with foraging showed no signs of spatial sorting but were significantly affected by environmental variables such as the vegetation and the intensity of urbanisation. When taken together, our results support the role of spatial sorting in facilitating the expansion of Common myna in South Africa despite its low propensity to disperse in the native range.</p> </div>", "links"=>[], "tags"=>["spatial", "sorting", "drives", "morphological", "invasive"], "article_id"=>124447, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Cécile Berthouly-Salazar", "Berndt J. van Rensburg", "Johannes J. Le Roux", "Bettine J. van Vuuren", "Cang Hui"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0038145.s001", "https://dx.doi.org/10.1371/journal.pone.0038145.s002", "https://dx.doi.org/10.1371/journal.pone.0038145.s003"], "stats"=>{"downloads"=>6, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Spatial_Sorting_Drives_Morphological_Variation_in_the_Invasive_Bird_Acridotheris_tristis_/124447", "title"=>"Spatial Sorting Drives Morphological Variation in the Invasive Bird, <em>Acridotheris tristis</em>", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2012-05-31 01:14:07"}
  • {"files"=>["https://ndownloader.figshare.com/files/631091"], "description"=>"<p>NS: traits displaying non-significant dimorphism between sexes.</p>", "links"=>[], "tags"=>["ratios", "myna"], "article_id"=>301583, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Cécile Berthouly-Salazar", "Berndt J. van Rensburg", "Johannes J. Le Roux", "Bettine J. van Vuuren", "Cang Hui"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0038145.t001", "stats"=>{"downloads"=>0, "page_views"=>16, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Morphological_traits_mean_s_d_and_ratios_of_Common_myna_Acridotheres_tristis_in_South_Africa_/301583", "title"=>"Morphological traits (mean ± s.d.) and ratios of Common myna (<i>Acridotheres tristis</i>) in South Africa.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2012-05-31 00:26:23"}

PMC Usage Stats | Further Information

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Relative Metric

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