Nocturnal Homing: Learning Walks in a Wandering Spider?
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{"title"=>"Nocturnal Homing: Learning Walks in a Wandering Spider?", "type"=>"journal", "authors"=>[{"first_name"=>"Thomas", "last_name"=>"Nørgaard", "scopus_author_id"=>"15834875500"}, {"first_name"=>"Yakir L.", "last_name"=>"Gagnon", "scopus_author_id"=>"23027513700"}, {"first_name"=>"Eric J.", "last_name"=>"Warrant", "scopus_author_id"=>"6701351331"}], "year"=>2012, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-84868690203", "sgr"=>"84868690203", "pui"=>"366025014", "isbn"=>"1932-6203 (Electronic)\r1932-6203 (Linking)", "pmid"=>"23145137", "doi"=>"10.1371/journal.pone.0049263"}, "id"=>"f50f02b5-e84e-3c44-ba38-7093d8cbc9e6", "abstract"=>"Homing by the nocturnal Namib Desert spider Leucorchestris arenicola (Araneae: Sparassidae) is comparable to homing in diurnal bees, wasps and ants in terms of path length and layout. The spiders' homing is based on vision but their basic navigational strategy is unclear. Diurnal homing insects use memorised views of their home in snapshot matching strategies. The insects learn the visual scenery identifying their nest location during learning flights (e.g. bees and wasps) or walks (ants). These learning flights and walks are stereotyped movement patterns clearly different from other movement behaviours. If the visual homing of L. arenicola is also based on an image matching strategy they are likely to exhibit learning walks similar to diurnal insects. To explore this possibility we recorded departures of spiders from a new burrow in an unfamiliar area with infrared cameras and analysed their paths using computer tracking techniques. We found that L. arenicola performs distinct stereotyped movement patterns during the first part of their departures in an unfamiliar area and that they seem to learn the appearance of their home during these movement patterns. We conclude that the spiders perform learning walks and this strongly suggests that L. arenicola uses a visual memory of the burrow location when homing.", "link"=>"http://www.mendeley.com/research/nocturnal-homing-learning-walks-wandering-spider", "reader_count"=>29, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Student > Doctoral Student"=>5, "Researcher"=>5, "Student > Ph. D. Student"=>9, "Student > Postgraduate"=>1, "Student > Master"=>6, "Other"=>1, "Student > Bachelor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Student > Doctoral Student"=>5, "Researcher"=>5, "Student > Ph. D. Student"=>9, "Student > Postgraduate"=>1, "Student > Master"=>6, "Other"=>1, "Student > Bachelor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Agricultural and Biological Sciences"=>22, "Medicine and Dentistry"=>1, "Design"=>1, "Arts and Humanities"=>1, "Neuroscience"=>1, "Physics and Astronomy"=>1, "Psychology"=>1}, "reader_count_by_subdiscipline"=>{"Design"=>{"Design"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Neuroscience"=>{"Neuroscience"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Psychology"=>{"Psychology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>22}, "Unspecified"=>{"Unspecified"=>1}, "Arts and Humanities"=>{"Arts and Humanities"=>1}}, "reader_count_by_country"=>{"United States"=>1, "Germany"=>1, "India"=>1}, "group_count"=>2}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/547552"], "description"=>"<p><b>A.</b> The body-to-burrow alignment angle α measured as the angle between the spiders' current walking direction and the direct line to the burrow. <b>B.</b> The visual fields of the anterior median eyes (AME) (light blue), anterior lateral eyes (ALE) (yellow), posterior median eyes (PME) (grey), and posterior lateral eyes (PLE) (magenta) on the right side of a <i>L. arenicola</i> visualised on a globe viewed from 15° above the horizontal plane (modified from Nørgaard et al. 2008). <b>C.</b> A visual field compass composed of the spider's visual fields (except the upwards-looking PME): this can be used to determine which eye(s) look back at the burrow for any given α.</p>", "links"=>[], "tags"=>["eyes", "looking"], "article_id"=>218048, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g002", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Which_eyes_are_looking_back_/218048", "title"=>"Which eyes are looking back?", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:43:59"}
  • {"files"=>["https://ndownloader.figshare.com/files/548077"], "description"=>"<p>Descriptive statistics for excursion departures and returns.</p>", "links"=>[], "tags"=>["excursion", "departures"], "article_id"=>218573, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.t001", "stats"=>{"downloads"=>4, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Descriptive_statistics_for_excursion_departures_and_returns_/218573", "title"=>"Descriptive statistics for excursion departures and returns.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-02-19 20:46:50"}
  • {"files"=>["https://ndownloader.figshare.com/files/547813"], "description"=>"<p>Mean α and 95% confidence intervals for 1<sup>st</sup> (α  =  blue, N = 26), 2<sup>nd</sup> (α  =  green, N = 16), and 3<sup>rd</sup> (α  =  red, N = 4) departures on single nights pooled for left and right side depicted on a compass with the visual fields of the AM eyes (light blue), AL eyes (yellow) and PL eyes (magenta).</p>", "links"=>[], "tags"=>["body-to-burrow", "alignment"], "article_id"=>218312, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g005", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Effect_of_departure_sequence_on_body_to_burrow_alignment_angle_945_/218312", "title"=>"Effect of departure sequence on body-to-burrow alignment angle α.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:45:25"}
  • {"files"=>["https://ndownloader.figshare.com/files/547616"], "description"=>"<p>Illustrations of the 26 departures recorded from individual male spiders leaving their burrow for the first time in a completely unfamiliar area. The red dots mark the burrow position. The circles represent the 2 m radius circle around the burrow.</p>", "links"=>[], "tags"=>["biotechnology", "neuroscience"], "article_id"=>218115, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g003", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Departures_by_na_239_ve_spiders_/218115", "title"=>"Departures by naïve spiders.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:44:21"}
  • {"files"=>["https://ndownloader.figshare.com/files/547719"], "description"=>"<p>The x-axis denotes the sequential departure of a spider from its burrow (1<sup>st</sup>: N = 26, 2<sup>nd</sup>: N = 16, and 3<sup>rd</sup>: N = 4). Departure paths are shown in the top pane. The circles represent the 2 m radius circle around the burrow. In the middle pane are the mean wavelengths of the sinusoidal paths. The amplitudes are shown in the bottom pane (y-axis is in cm). Error bars are standard deviation. While the amplitudes were not significantly different between departures, the wavelengths were (PERMANOVA, <i>P</i> = 0.0003).</p>", "links"=>[], "tags"=>["sinusoidal"], "article_id"=>218222, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g004", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Ontogeny_of_sinusoidal_departure_pattern_/218222", "title"=>"Ontogeny of sinusoidal departure pattern.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:44:56"}
  • {"files"=>["https://ndownloader.figshare.com/files/547452"], "description"=>"<p><b>A.</b> Adult male <i>L. arenicola</i>. <b>B.</b> Close-up view of the eye arrangement on the carapace of <i>L. arenicola</i>. <b>C.</b> Schematic representation of the position of the anterior lateral eyes (ALE), anterior median eyes (AME), posterior median eyes (PME), and posterior lateral eyes (PLE). (<b>B</b> and <b>C</b> modified from Nørgaard et al. 2008).</p>", "links"=>[], "tags"=>["biotechnology", "neuroscience"], "article_id"=>217948, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g001", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_navigator_/217948", "title"=>"The navigator.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:43:21"}
  • {"files"=>["https://ndownloader.figshare.com/files/547864"], "description"=>"<p>Mean departure (dashed lines) and return (solid lines) path length (cm), duration (s), and speed (cm/s) as a function of departure or return number on single nights (see <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0049263#pone-0049263-t001\" target=\"_blank\">Table 1</a> for descriptive statistics).</p>", "links"=>[], "tags"=>["compared"], "article_id"=>218361, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g006", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Departures_compared_to_returns_/218361", "title"=>"Departures compared to returns.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:45:45"}
  • {"files"=>["https://ndownloader.figshare.com/files/547988"], "description"=>"<p>The direct distance to the burrow as a function of time in individual spiders reveals that the spiders move away from their burrow at a constant rate independent of the shape of the sinusoidal movement pattern they perform.</p>", "links"=>[], "tags"=>["biotechnology", "neuroscience"], "article_id"=>218488, "categories"=>["Biotechnology", "Neuroscience"], "users"=>["Thomas Nørgaard", "Yakir L. Gagnon", "Eric J. Warrant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0049263.g007", "stats"=>{"downloads"=>2, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Constant_rate_of_departure_/218488", "title"=>"Constant rate of departure.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-19 20:46:23"}

PMC Usage Stats | Further Information

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  • {"unique-ip"=>"6", "full-text"=>"5", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"3", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"4"}
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  • {"unique-ip"=>"7", "full-text"=>"3", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"4", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"5"}
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  • {"unique-ip"=>"6", "full-text"=>"3", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"3", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"7"}
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  • {"unique-ip"=>"2", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"12"}
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  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"2"}
  • {"unique-ip"=>"27", "full-text"=>"45", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"11"}
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  • {"unique-ip"=>"9", "full-text"=>"8", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2015", "month"=>"11"}
  • {"unique-ip"=>"11", "full-text"=>"13", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"12"}
  • {"unique-ip"=>"28", "full-text"=>"31", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"1"}
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  • {"unique-ip"=>"4", "full-text"=>"3", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"5"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"6"}
  • {"unique-ip"=>"6", "full-text"=>"6", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"7"}
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Relative Metric

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