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dc.contributor.authorHuck, Maren
dc.contributor.authorFernández-Duque, Eduardo
dc.date.accessioned2016-10-22T10:35:13Z
dc.date.available2016-10-22T10:35:13Z
dc.date.issued2016-08-25
dc.identifier.citationHuck, M. and Fernandez-Duqu, E., (2016) 'Home-range use of wild solitary Azara's owl monkeys (Aotus azarae) in relation to group ranges in Formosa, Argentina', Joint meeting of the International Primatological Society and the American Society of Primatologists, August 21-27, 2016, Lincoln Park Zoo’s Lester Fisher Center for the Study and Conservation of Apes Chicago, Illinois, USAen
dc.identifier.urihttp://hdl.handle.net/10545/620650
dc.description.abstractLittle is known about the secret lives of subadult owl monkeys that have left their natal group to "float" in the population, before they find a new group or die. Groups are territorial, and in suitable habitat territories take up all available space. Thus, “floaters” cannot avoid overlapping with established groups while roaming, and may be attacked by groups that are trying to avoid take-overs. We hypothesized that floaters minimize temporal and/or spatial overlap with groups. Using location data of 23 floaters and surrounding groups (range 23-96 (25-973), median=42 (93) locations for floaters (groups)), we determined home-range sizes and home-range overlaps. Temporal avoidance was analyzed by comparing floaters’ distances to groups during simultaneous observations to distances between randomly selected location pairs of floaters and groups. Spatial avoidance was investigated by comparing the actual Utilization Distribution Overlap Indices (UDOIs) for 50% kernels of floaters and groups against UDOIs derived from randomized home-ranges. We predicted greater distances for parallel observations and lower spatial/home range overlap. Linear mixed models did not suggest temporal avoidance (parallel=361.8m vs. 381.5m), but UDOIs were smaller than expected based on randomized ranges (0.012 vs. 0.014). It seems that floaters do not monitor exact locations of groups closely enough to avoid them completely, but preferentially use areas outside the core home range of groups. Funding to EFD: NSF-BCS-0621020/1219368/1232349, NSF-REU 0837921/0924352/1026991 and NIA- P30 AG012836-19
dc.description.sponsorshipFunding to EFD: NSF-BCS-0621020/1219368/1232349, NSF-REU 0837921/0924352/1026991 and NIA- P30 AG012836-19en
dc.language.isoenen
dc.publisherInternational Primatological Societyen
dc.relation.ispartofseries# 6877en
dc.relation.urlhttps://www.asp.org/IPS/meetings/conferenceschedule.cfm?year=2016&day=107&expand=false&parenteventid=6483en
dc.relation.urlhttps://www.asp.org/IPS/meetings/abstractDisplay.cfm?abstractID=6877&expand=false&confEventID=6608&day=107&parenteventid=6483en
dc.relation.urlhttp://www.ipschicago.org/en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectCore areaen
dc.subjectDispersalen
dc.subjectFloateren
dc.subjectHome-range useen
dc.subjectIntruderen
dc.subjectNight monkeyen
dc.subjectSpatial avoidanceen
dc.subjectTemporal avoidanceen
dc.subjectUtilization distribution overlap indexen
dc.subjectUDOIen
dc.titleHome-range use of wild solitary Azara's owl monkeys (Aotus azarae) in relation to group ranges in Formosa, Argentinaen
dc.typePresentationen
dc.contributor.departmentUniversity of Derbyen
html.description.abstractLittle is known about the secret lives of subadult owl monkeys that have left their natal group to "float" in the population, before they find a new group or die. Groups are territorial, and in suitable habitat territories take up all available space. Thus, “floaters” cannot avoid overlapping with established groups while roaming, and may be attacked by groups that are trying to avoid take-overs. We hypothesized that floaters minimize temporal and/or spatial overlap with groups. Using location data of 23 floaters and surrounding groups (range 23-96 (25-973), median=42 (93) locations for floaters (groups)), we determined home-range sizes and home-range overlaps. Temporal avoidance was analyzed by comparing floaters’ distances to groups during simultaneous observations to distances between randomly selected location pairs of floaters and groups. Spatial avoidance was investigated by comparing the actual Utilization Distribution Overlap Indices (UDOIs) for 50% kernels of floaters and groups against UDOIs derived from randomized home-ranges. We predicted greater distances for parallel observations and lower spatial/home range overlap. Linear mixed models did not suggest temporal avoidance (parallel=361.8m vs. 381.5m), but UDOIs were smaller than expected based on randomized ranges (0.012 vs. 0.014). It seems that floaters do not monitor exact locations of groups closely enough to avoid them completely, but preferentially use areas outside the core home range of groups. Funding to EFD: NSF-BCS-0621020/1219368/1232349, NSF-REU 0837921/0924352/1026991 and NIA- P30 AG012836-19


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