How Did the Spider Cross the River? Behavioral Adaptations for River-Bridging Webs in Caerostris darwini (Araneae: Araneidae)
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Mendeley | Further Information

{"title"=>"How did the spider cross the river? behavioral adaptations for river-bridging webs in Caerostris darwini (Araneae: Araneidae)", "type"=>"journal", "authors"=>[{"first_name"=>"Matjaž", "last_name"=>"Gregorič", "scopus_author_id"=>"35183178900"}, {"first_name"=>"Ingi", "last_name"=>"Agnarsson", "scopus_author_id"=>"6603267245"}, {"first_name"=>"Todd A.", "last_name"=>"Blackledge", "scopus_author_id"=>"6701406157"}, {"first_name"=>"Matjaž", "last_name"=>"Kuntner", "scopus_author_id"=>"9841505400"}], "year"=>2011, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-80055031256", "pui"=>"362825526", "doi"=>"10.1371/journal.pone.0026847", "isbn"=>"1932-6203", "sgr"=>"80055031256", "pmid"=>"22046378"}, "id"=>"ec6fe4a7-abbd-34fc-a230-24e9aabf8cf2", "abstract"=>"BACKGROUND: Interspecific coevolution is well described, but we know significantly less about how multiple traits coevolve within a species, particularly between behavioral traits and biomechanical properties of animals' \"extended phenotypes\". In orb weaving spiders, coevolution of spider behavior with ecological and physical traits of their webs is expected. Darwin's bark spider (Caerostris darwini) bridges large water bodies, building the largest known orb webs utilizing the toughest known silk. Here, we examine C. darwini web building behaviors to establish how bridge lines are formed over water. We also test the prediction that this spider's unique web ecology and architecture coevolved with new web building behaviors.\\n\\nMETHODOLOGY: We observed C. darwini in its natural habitat and filmed web building. We observed 90 web building events, and compared web building behaviors to other species of orb web spiders.\\n\\nCONCLUSIONS: Caerostris darwini uses a unique set of behaviors, some unknown in other spiders, to construct its enormous webs. First, the spiders release unusually large amounts of bridging silk into the air, which is then carried downwind, across the water body, establishing bridge lines. Second, the spiders perform almost no web site exploration. Third, they construct the orb capture area below the initial bridge line. In contrast to all known orb-weavers, the web hub is therefore not part of the initial bridge line but is instead built de novo. Fourth, the orb contains two types of radial threads, with those in the upper half of the web doubled. These unique behaviors result in a giant, yet rather simplified web. Our results continue to build evidence for the coevolution of behavioral (web building), ecological (web microhabitat) and biomaterial (silk biomechanics) traits that combined allow C. darwini to occupy a unique niche among spiders.", "link"=>"http://www.mendeley.com/research/spider-cross-river-behavioral-adaptations-riverbridging-webs-caerostris-darwini-araneae-araneidae", "reader_count"=>50, "reader_count_by_academic_status"=>{"Unspecified"=>4, "Professor > Associate Professor"=>8, "Researcher"=>8, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>11, "Student > Postgraduate"=>2, "Student > Master"=>4, "Other"=>4, "Student > Bachelor"=>5}, "reader_count_by_user_role"=>{"Unspecified"=>4, "Professor > Associate Professor"=>8, "Researcher"=>8, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>11, "Student > Postgraduate"=>2, "Student > Master"=>4, "Other"=>4, "Student > Bachelor"=>5}, "reader_count_by_subject_area"=>{"Unspecified"=>4, "Environmental Science"=>3, "Biochemistry, Genetics and Molecular Biology"=>4, "Agricultural and Biological Sciences"=>30, "Arts and Humanities"=>2, "Sports and Recreations"=>1, "Physics and Astronomy"=>1, "Psychology"=>1, "Computer Science"=>1, "Earth and Planetary Sciences"=>1, "Neuroscience"=>2}, "reader_count_by_subdiscipline"=>{"Neuroscience"=>{"Neuroscience"=>2}, "Sports and Recreations"=>{"Sports and Recreations"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Psychology"=>{"Psychology"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>30}, "Computer Science"=>{"Computer Science"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>4}, "Unspecified"=>{"Unspecified"=>4}, "Environmental Science"=>{"Environmental Science"=>3}, "Arts and Humanities"=>{"Arts and Humanities"=>2}}, "reader_count_by_country"=>{"Reunion"=>1, "United States"=>2, "Luxembourg"=>1, "Brazil"=>3, "Germany"=>1, "India"=>1, "Indonesia"=>1}, "group_count"=>2}

Scopus | Further Information

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Figshare

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  • {"files"=>["https://ndownloader.figshare.com/files/719739"], "description"=>"<p>AL. Anchor line. BL. Bridge line. M. Connection point of the initial bridge line and vertical anchor line. SF. Secondary frame. Numbered arrows show building sequence of web frame. A dashed and a solid line in “C” indicate doubled radii.</p>", "links"=>[], "tags"=>["araneid", "shown"], "article_id"=>390102, "categories"=>["Biotechnology", "Neuroscience", "Ecology", "Evolutionary Biology"], "users"=>["Matjaž Gregorič", "Ingi Agnarsson", "Todd A. Blackledge", "Matjaž Kuntner"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0026847.g003", "stats"=>{"downloads"=>1, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Web_building_in_C_darwini_A_C_versus_the_classical_araneid_web_D_shown_without_spirals_/390102", "title"=>"Web building in <i>C. darwini</i> (A-C) versus the “classical” araneid web (D), shown without spirals.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-10-26 00:01:42"}
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  • {"files"=>["https://ndownloader.figshare.com/files/364806", "https://ndownloader.figshare.com/files/364857"], "description"=>"<div><h3>Background</h3><p>Interspecific coevolution is well described, but we know significantly less about how multiple traits coevolve within a species, particularly between behavioral traits and biomechanical properties of animals' “extended phenotypes”. In orb weaving spiders, coevolution of spider behavior with ecological and physical traits of their webs is expected. Darwin's bark spider (<em>Caerostris darwini</em>) bridges large water bodies, building the largest known orb webs utilizing the toughest known silk. Here, we examine <em>C. darwini</em> web building behaviors to establish how bridge lines are formed over water. We also test the prediction that this spider's unique web ecology and architecture coevolved with new web building behaviors.</p> <h3>Methodology</h3><p>We observed <em>C. darwini</em> in its natural habitat and filmed web building. We observed 90 web building events, and compared web building behaviors to other species of orb web spiders.</p> <h3>Conclusions</h3><p><em>Caerostris darwini</em> uses a unique set of behaviors, some unknown in other spiders, to construct its enormous webs. First, the spiders release unusually large amounts of bridging silk into the air, which is then carried downwind, across the water body, establishing bridge lines. Second, the spiders perform almost no web site exploration. Third, they construct the orb capture area below the initial bridge line. In contrast to all known orb-weavers, the web hub is therefore not part of the initial bridge line but is instead built <em>de novo</em>. Fourth, the orb contains two types of radial threads, with those in the upper half of the web doubled. These unique behaviors result in a giant, yet rather simplified web. Our results continue to build evidence for the coevolution of behavioral (web building), ecological (web microhabitat) and biomaterial (silk biomechanics) traits that combined allow <em>C. darwini</em> to occupy a unique niche among spiders.</p> </div>", "links"=>[], "tags"=>["did", "spider", "adaptations", "river-bridging", "webs"], "article_id"=>132097, "categories"=>["Biotechnology", "Neuroscience", "Ecology", "Evolutionary Biology"], "users"=>["Matjaž Gregorič", "Ingi Agnarsson", "Todd A. Blackledge", "Matjaž Kuntner"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0026847.s001", "https://dx.doi.org/10.1371/journal.pone.0026847.s002"], "stats"=>{"downloads"=>1, "page_views"=>13, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/How_Did_the_Spider_Cross_the_River_Behavioral_Adaptations_for_River_Bridging_Webs_in_Caerostris_darwini_Araneae_Araneidae_/132097", "title"=>"How Did the Spider Cross the River? Behavioral Adaptations for River-Bridging Webs in <em>Caerostris darwini</em> (Araneae: Araneidae)", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2011-10-26 00:34:57"}

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Relative Metric

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