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The Influence of Sex and Season on Conspecific Spatial Overlap in a Large, Actively-Foraging Colubrid Snake

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dc.contributor.authorBauder, Javan M.
dc.contributor.authorBreininger, David R.
dc.contributor.authorBolt, M. Rebecca
dc.contributor.authorLegare, Michael L.
dc.contributor.authorJenkins, Christopher L.
dc.contributor.authorRothermel, Betsie B.
dc.contributor.authorMcGarigal, Kevin
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.contributor.departmentKennedy Space Center
dc.contributor.departmentKennedy Space Center
dc.contributor.departmentMerritt Island National Wildlife Refuge
dc.contributor.departmentThe Orianne Society
dc.contributor.departmentArchbold Biological Station
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.date2023-09-23T16:58:57.000
dc.date.accessioned2024-04-26T19:32:40Z
dc.date.available2017-01-12T00:00:00Z
dc.date.issued2016-01-01
dc.description.abstractUnderstanding the factors influencing the degree of spatial overlap among conspecifics is important for understanding multiple ecological processes. Compared to terrestrial carnivores, relatively little is known about the factors influencing conspecific spatial overlap in snakes, although across snake taxa there appears to be substantial variation in conspecific spatial overlap. In this study, we described conspecific spatial overlap of eastern indigo snakes (Drymarchon couperi) in peninsular Florida and examined how conspecific spatial overlap varied by sex and season (breeding season vs. non-breeding season). We calculated multiple indices of spatial overlap using 6- and 3-month utilization distributions (UD) of dyads of simultaneously adjacent telemetered snakes. We also measured conspecific UD density values at each telemetry fix and modeled the distribution of those values as a function of overlap type, sex, and season using generalized Pareto distributions. Home range overlap between males and females was significantly greater than overlap between individuals of the same sex and male home ranges often completely contained female home ranges. Male home ranges overlapped little during both seasons, whereas females had higher levels of overlap during the non-breeding season. The spatial patterns observed in our study are consistent with those seen in many mammalian carnivores, in which low male-male overlap and high inter-sexual overlap provides males with greater access to females. We encourage additional research on the influence of prey availability on conspecific spatial overlap in snakes as well as the behavioral mechanisms responsible for maintaining the low levels of overlap we observed.
dc.description.sponsorshipFunding for this project was provided by the United States Fish and Wildlife Service (www.fws. gov) and The Orianne Society (www.oriannesociety. org) to JMB and CLJ and by the United States Fish and Wildlife Service, NASA, and the Bailey Wildlife Foundation to DRB, MRB, and MLL.
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0160033
dc.identifier.urihttps://hdl.handle.net/20.500.14394/37645
dc.relation.ispartofPlos One
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1386&context=nrc_faculty_pubs&unstamped=1
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.source.issue8
dc.source.issue11
dc.source.statuspublished
dc.subjectsnakes
dc.subjectanimal sexual behavior
dc.subjectforaging
dc.subjectcarnivora
dc.subjectbandwidth (signal processing)
dc.subjectPareto distribution
dc.subjectanimal behavior
dc.subjectspatial and landscape ecology
dc.titleThe Influence of Sex and Season on Conspecific Spatial Overlap in a Large, Actively-Foraging Colubrid Snake
dc.typearticle
dc.typearticle
digcom.contributor.authorBauder, Javan M.
digcom.contributor.authorBreininger, David R.
digcom.contributor.authorBolt, M. Rebecca
digcom.contributor.authorLegare, Michael L.
digcom.contributor.authorJenkins, Christopher L.
digcom.contributor.authorRothermel, Betsie B.
digcom.contributor.authorMcGarigal, Kevin
digcom.date.embargo2017-01-12T00:00:00-08:00
digcom.identifiernrc_faculty_pubs/387
digcom.identifier.contextkey9543505
digcom.identifier.submissionpathnrc_faculty_pubs/387
dspace.entity.typePublication
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