Seasonal Variation in the Degree of Heterospecific Association of Two Syntopic Hyraxes (Heterohyrax brucei and Procavia capensis) Exhibiting Synchronous Parturition
Adult rock hyrax (Procavia capensis) and bush hyrax (Heterohyrax brucei) allocate much of their surface activity to being vigilant for vertebrate predators. Individuals of the two species associate for thermoregulatory basking on rock outcrops (koppies) and, in the Matobo National Park, Zimbabwe, fr...
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| Veröffentlicht in: | Behavioral ecology and sociobiology 2002-08, Vol.52 (3), p.177-181 |
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| creator | Barry, Ronald E. Mundy, Peter J. |
| description | Adult rock hyrax (Procavia capensis) and bush hyrax (Heterohyrax brucei) allocate much of their surface activity to being vigilant for vertebrate predators. Individuals of the two species associate for thermoregulatory basking on rock outcrops (koppies) and, in the Matobo National Park, Zimbabwe, frequently constitute heterospecific groups that produce offspring synchronously. Exposure to predators during basking is thought to put a high premium on vigilance, particularly during the presence of dependent offspring in nurseries. We predicted, therefore, an increase in the association of the two species of hyraxes when offspring were present because this would lead to larger groups, thus enhancing the ability to detect predators. Koppie aggregations of hyraxes were classified as homospecific or heterospecific according to basking group composition. Heterospecific association increased when offspring were present, and heterospecific groups were larger than homospecific ones. Fifty-one percent of nurseries were heterospecific for adults/subadults. During the pre-weaning phase ( |
| doi_str_mv | 10.1007/s00265-002-0509-8 |
| format | Article |
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Individuals of the two species associate for thermoregulatory basking on rock outcrops (koppies) and, in the Matobo National Park, Zimbabwe, frequently constitute heterospecific groups that produce offspring synchronously. Exposure to predators during basking is thought to put a high premium on vigilance, particularly during the presence of dependent offspring in nurseries. We predicted, therefore, an increase in the association of the two species of hyraxes when offspring were present because this would lead to larger groups, thus enhancing the ability to detect predators. Koppie aggregations of hyraxes were classified as homospecific or heterospecific according to basking group composition. Heterospecific association increased when offspring were present, and heterospecific groups were larger than homospecific ones. Fifty-one percent of nurseries were heterospecific for adults/subadults. During the pre-weaning phase (<2 months after birth), 85% of P. capensis and 65% of H. brucei juveniles were in nurseries of heterospecific basking groups. Heterospecific groups had more offspring than homospecific groups. Juvenile mortality is most evident after young are weaned and heterospecific associations break down. Heterospecific aggregation, through increased group size, may result in a higher probability of avoiding predators, thereby reducing the vulnerability of young.</description><identifier>ISSN: 0340-5443</identifier><identifier>EISSN: 1432-0762</identifier><identifier>DOI: 10.1007/s00265-002-0509-8</identifier><identifier>CODEN: BESOD6</identifier><language>eng</language><publisher>Heidelberg: Springer-Verlag</publisher><subject>Aggregation ; Animal and plant ecology ; Animal, plant and microbial ecology ; Animals ; Autoecology ; Biological and medical sciences ; Eagles ; Fundamental and applied biological sciences. Psychology ; Group size ; Mammalia ; Mammals ; Mortality ; National parks ; Parturition ; Predators ; Vertebrata ; Weaning ; Young animals</subject><ispartof>Behavioral ecology and sociobiology, 2002-08, Vol.52 (3), p.177-181</ispartof><rights>Copyright 2002 Springer-Verlag</rights><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c391t-d50ae199ae6c7e2846e6c4f97508dfc5cb8b5d9820658ad8bde590acf0da556b3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/4602124$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/4602124$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27923,27924,58016,58249</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=13930197$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Barry, Ronald E.</creatorcontrib><creatorcontrib>Mundy, Peter J.</creatorcontrib><title>Seasonal Variation in the Degree of Heterospecific Association of Two Syntopic Hyraxes (Heterohyrax brucei and Procavia capensis) Exhibiting Synchronous Parturition</title><title>Behavioral ecology and sociobiology</title><description>Adult rock hyrax (Procavia capensis) and bush hyrax (Heterohyrax brucei) allocate much of their surface activity to being vigilant for vertebrate predators. Individuals of the two species associate for thermoregulatory basking on rock outcrops (koppies) and, in the Matobo National Park, Zimbabwe, frequently constitute heterospecific groups that produce offspring synchronously. Exposure to predators during basking is thought to put a high premium on vigilance, particularly during the presence of dependent offspring in nurseries. We predicted, therefore, an increase in the association of the two species of hyraxes when offspring were present because this would lead to larger groups, thus enhancing the ability to detect predators. Koppie aggregations of hyraxes were classified as homospecific or heterospecific according to basking group composition. Heterospecific association increased when offspring were present, and heterospecific groups were larger than homospecific ones. Fifty-one percent of nurseries were heterospecific for adults/subadults. During the pre-weaning phase (<2 months after birth), 85% of P. capensis and 65% of H. brucei juveniles were in nurseries of heterospecific basking groups. Heterospecific groups had more offspring than homospecific groups. Juvenile mortality is most evident after young are weaned and heterospecific associations break down. Heterospecific aggregation, through increased group size, may result in a higher probability of avoiding predators, thereby reducing the vulnerability of young.</description><subject>Aggregation</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>Eagles</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Group size</subject><subject>Mammalia</subject><subject>Mammals</subject><subject>Mortality</subject><subject>National parks</subject><subject>Parturition</subject><subject>Predators</subject><subject>Vertebrata</subject><subject>Weaning</subject><subject>Young animals</subject><issn>0340-5443</issn><issn>1432-0762</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNpFUc1u1DAQjhBILIUHQOLgC4geAuM4duxj1RYWqRKVWrhGE2fSdZXawc6W7vvwoDjKCi5jj76fGc1XFG85fOIAzecEUClZ5lqCBFPqZ8WG1yJ3jaqeFxsQNZSyrsXL4lVK9wCguNab4s8NYQoeR_YTo8PZBc-cZ_OO2AXdRSIWBralmWJIE1k3OMvOUgr2yM3o7e_Abg5-DlPGtoeIT5TYx1WzW1rWxb0lx9D37DoGi48OmcWJfHLplF0-7VznZufvFhu7i8GHfWLXGOd9dMuU18WLAcdEb47vSfHjy-Xt-ba8-v712_nZVWmF4XPZS0DixiAp21Cla5U_9WAaCbofrLSd7mRvdAVKaux115M0gHaAHqVUnTgpPqy-Uwy_9pTm9sElS-OInvJKLc-WqhKQiXwl2nyWFGlop-geMB5aDu2SR7vm0ebaLnm0OmveH80xWRyHiN669F8ojABumsx7t_Lu0xziP7xWUPGqFn8BiW6YvQ</recordid><startdate>20020801</startdate><enddate>20020801</enddate><creator>Barry, Ronald E.</creator><creator>Mundy, Peter J.</creator><general>Springer-Verlag</general><general>Springer</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>C1K</scope></search><sort><creationdate>20020801</creationdate><title>Seasonal Variation in the Degree of Heterospecific Association of Two Syntopic Hyraxes (Heterohyrax brucei and Procavia capensis) Exhibiting Synchronous Parturition</title><author>Barry, Ronald E. ; Mundy, Peter J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c391t-d50ae199ae6c7e2846e6c4f97508dfc5cb8b5d9820658ad8bde590acf0da556b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Aggregation</topic><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Autoecology</topic><topic>Biological and medical sciences</topic><topic>Eagles</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Group size</topic><topic>Mammalia</topic><topic>Mammals</topic><topic>Mortality</topic><topic>National parks</topic><topic>Parturition</topic><topic>Predators</topic><topic>Vertebrata</topic><topic>Weaning</topic><topic>Young animals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barry, Ronald E.</creatorcontrib><creatorcontrib>Mundy, Peter J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Behavioral ecology and sociobiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Barry, Ronald E.</au><au>Mundy, Peter J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Seasonal Variation in the Degree of Heterospecific Association of Two Syntopic Hyraxes (Heterohyrax brucei and Procavia capensis) Exhibiting Synchronous Parturition</atitle><jtitle>Behavioral ecology and sociobiology</jtitle><date>2002-08-01</date><risdate>2002</risdate><volume>52</volume><issue>3</issue><spage>177</spage><epage>181</epage><pages>177-181</pages><issn>0340-5443</issn><eissn>1432-0762</eissn><coden>BESOD6</coden><abstract>Adult rock hyrax (Procavia capensis) and bush hyrax (Heterohyrax brucei) allocate much of their surface activity to being vigilant for vertebrate predators. Individuals of the two species associate for thermoregulatory basking on rock outcrops (koppies) and, in the Matobo National Park, Zimbabwe, frequently constitute heterospecific groups that produce offspring synchronously. Exposure to predators during basking is thought to put a high premium on vigilance, particularly during the presence of dependent offspring in nurseries. We predicted, therefore, an increase in the association of the two species of hyraxes when offspring were present because this would lead to larger groups, thus enhancing the ability to detect predators. Koppie aggregations of hyraxes were classified as homospecific or heterospecific according to basking group composition. Heterospecific association increased when offspring were present, and heterospecific groups were larger than homospecific ones. Fifty-one percent of nurseries were heterospecific for adults/subadults. During the pre-weaning phase (<2 months after birth), 85% of P. capensis and 65% of H. brucei juveniles were in nurseries of heterospecific basking groups. Heterospecific groups had more offspring than homospecific groups. Juvenile mortality is most evident after young are weaned and heterospecific associations break down. Heterospecific aggregation, through increased group size, may result in a higher probability of avoiding predators, thereby reducing the vulnerability of young.</abstract><cop>Heidelberg</cop><cop>Berlin</cop><pub>Springer-Verlag</pub><doi>10.1007/s00265-002-0509-8</doi><tpages>5</tpages></addata></record> |
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| ispartof | Behavioral ecology and sociobiology, 2002-08, Vol.52 (3), p.177-181 |
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| source | JSTOR Archive Collection A-Z Listing; SpringerLink Journals - AutoHoldings |
| subjects | Aggregation Animal and plant ecology Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences Eagles Fundamental and applied biological sciences. Psychology Group size Mammalia Mammals Mortality National parks Parturition Predators Vertebrata Weaning Young animals |
| title | Seasonal Variation in the Degree of Heterospecific Association of Two Syntopic Hyraxes (Heterohyrax brucei and Procavia capensis) Exhibiting Synchronous Parturition |
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