Rapid Senescence in Pacific Salmon
Any useful evolutionary theory of senescence must be able to explain variation within and among natural populations and species. This requires a careful characterization of age‐specific mortality rates in nature as well as the intrinsic and extrinsic factors that influence these rates. We perform th...
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| Veröffentlicht in: | The American naturalist 2005-11, Vol.166 (5), p.556-568 |
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| container_title | The American naturalist |
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| creator | Morbey, Yolanda E. Brassil, Chad E. Hendry, Andrew P. |
| description | Any useful evolutionary theory of senescence must be able to explain variation within and among natural populations and species. This requires a careful characterization of age‐specific mortality rates in nature as well as the intrinsic and extrinsic factors that influence these rates. We perform this task for two populations of semelparous Pacific salmon. During the breeding season, estimated daily mortality rates increased from 0 to 0.2–0.5 (depending on the year) over the course of several weeks. Early‐arriving individuals had a later onset and/or a lower rate of senescence in each breeding season, consistent with adaptive expectations based on temporal variation in selection. Interannual variation in senescence was large, in part because of extrinsic factors (e.g., water temperature). Predation rates were higher in Pick Creek sockeye salmon (anadromousOncorhynchus nerka) than in Meadow Creek kokanee (nonanadromousO. nerka), but in contrast to evolutionary theory, senescence was not more rapid in the former. Interannual variation may have obscured interpopulation divergence in senescence. Pacific salmon are a promising system for further studies on the physiological, evolutionary, and genetic bases of senescence. In particular, we encourage further research to disentangle the relative importance of adaptive and nonadaptive variation in senescence. |
| doi_str_mv | 10.1086/491720 |
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L. Promislow ; Jonathan B. Losos</contributor><creatorcontrib>Morbey, Yolanda E. ; Brassil, Chad E. ; Hendry, Andrew P. ; Daniel E. L. Promislow ; Jonathan B. Losos</creatorcontrib><description>Any useful evolutionary theory of senescence must be able to explain variation within and among natural populations and species. This requires a careful characterization of age‐specific mortality rates in nature as well as the intrinsic and extrinsic factors that influence these rates. We perform this task for two populations of semelparous Pacific salmon. During the breeding season, estimated daily mortality rates increased from 0 to 0.2–0.5 (depending on the year) over the course of several weeks. Early‐arriving individuals had a later onset and/or a lower rate of senescence in each breeding season, consistent with adaptive expectations based on temporal variation in selection. Interannual variation in senescence was large, in part because of extrinsic factors (e.g., water temperature). Predation rates were higher in Pick Creek sockeye salmon (anadromousOncorhynchus nerka) than in Meadow Creek kokanee (nonanadromousO. nerka), but in contrast to evolutionary theory, senescence was not more rapid in the former. Interannual variation may have obscured interpopulation divergence in senescence. Pacific salmon are a promising system for further studies on the physiological, evolutionary, and genetic bases of senescence. In particular, we encourage further research to disentangle the relative importance of adaptive and nonadaptive variation in senescence.</description><identifier>ISSN: 0003-0147</identifier><identifier>EISSN: 1537-5323</identifier><identifier>DOI: 10.1086/491720</identifier><identifier>PMID: 16224721</identifier><identifier>CODEN: AMNTA4</identifier><language>eng</language><publisher>United States: The University of Chicago Press</publisher><subject>Age ; Aging ; Aging - physiology ; Animals ; Biological variation ; Brackish ; Breeding ; Cellular senescence ; Death ; Ecosystem ; Female animals ; Freshwater ; Marine ; Mathematical independent variables ; Mortality ; Oceans ; Oncorhynchus nerka ; Pacific Ocean ; Parametric models ; Population Growth ; Predation ; Salmon ; Salmon - growth & development ; Survival analysis ; Zoology</subject><ispartof>The American naturalist, 2005-11, Vol.166 (5), p.556-568</ispartof><rights>2005 by The University of Chicago.</rights><rights>Copyright University of Chicago, acting through its Press Nov 2005</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c417t-a63cb90d45692ecd8bfa85169686e4dbd9f504eacc72fc60a326fe1cef2ffdb3</citedby><cites>FETCH-LOGICAL-c417t-a63cb90d45692ecd8bfa85169686e4dbd9f504eacc72fc60a326fe1cef2ffdb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,803,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16224721$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Daniel E. L. Promislow</contributor><contributor>Jonathan B. Losos</contributor><creatorcontrib>Morbey, Yolanda E.</creatorcontrib><creatorcontrib>Brassil, Chad E.</creatorcontrib><creatorcontrib>Hendry, Andrew P.</creatorcontrib><title>Rapid Senescence in Pacific Salmon</title><title>The American naturalist</title><addtitle>Am Nat</addtitle><description>Any useful evolutionary theory of senescence must be able to explain variation within and among natural populations and species. This requires a careful characterization of age‐specific mortality rates in nature as well as the intrinsic and extrinsic factors that influence these rates. We perform this task for two populations of semelparous Pacific salmon. During the breeding season, estimated daily mortality rates increased from 0 to 0.2–0.5 (depending on the year) over the course of several weeks. Early‐arriving individuals had a later onset and/or a lower rate of senescence in each breeding season, consistent with adaptive expectations based on temporal variation in selection. Interannual variation in senescence was large, in part because of extrinsic factors (e.g., water temperature). Predation rates were higher in Pick Creek sockeye salmon (anadromousOncorhynchus nerka) than in Meadow Creek kokanee (nonanadromousO. nerka), but in contrast to evolutionary theory, senescence was not more rapid in the former. Interannual variation may have obscured interpopulation divergence in senescence. Pacific salmon are a promising system for further studies on the physiological, evolutionary, and genetic bases of senescence. In particular, we encourage further research to disentangle the relative importance of adaptive and nonadaptive variation in senescence.</description><subject>Age</subject><subject>Aging</subject><subject>Aging - physiology</subject><subject>Animals</subject><subject>Biological variation</subject><subject>Brackish</subject><subject>Breeding</subject><subject>Cellular senescence</subject><subject>Death</subject><subject>Ecosystem</subject><subject>Female animals</subject><subject>Freshwater</subject><subject>Marine</subject><subject>Mathematical independent variables</subject><subject>Mortality</subject><subject>Oceans</subject><subject>Oncorhynchus nerka</subject><subject>Pacific Ocean</subject><subject>Parametric models</subject><subject>Population Growth</subject><subject>Predation</subject><subject>Salmon</subject><subject>Salmon - growth & development</subject><subject>Survival analysis</subject><subject>Zoology</subject><issn>0003-0147</issn><issn>1537-5323</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1LAzEQhoMotlb9BSKliLfVTD43Ryl-QUGxvS_ZbKJb9suke_DfG9nSihdPYcjDMzPvIHQO-AZwKm6ZAknwARoDpzLhlNBDNMYY0wQDkyN0EsI6loopfoxGIAhhksAYzd50VxbTpW1sMLYxdlo201dtSlea6VJXdducoiOnq2DPtu8ErR7uV_OnZPHy-Dy_WySGgdwkWlCTK1wwLhSxpkhzp1MOQolUWFbkhXIcM6uNkcQZgTUlwlkw1hHnipxO0PWg7Xz72duwyeoyjlRVurFtH7KoSSUF-BcEySRWnEdw9gdct71v4g4ZqFSIFOgvm_FtCN66rPNlrf1XBjj7iTYboo3g5dbW57Ut9tg2ywhcDUBvPkqj39vO2xD2PXeeiwFbh03rdxoav0k83jdeX4ah</recordid><startdate>20051101</startdate><enddate>20051101</enddate><creator>Morbey, Yolanda E.</creator><creator>Brassil, Chad E.</creator><creator>Hendry, Andrew P.</creator><general>The University of Chicago Press</general><general>University of Chicago, acting through its Press</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7TN</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope><scope>7X8</scope></search><sort><creationdate>20051101</creationdate><title>Rapid Senescence in Pacific Salmon</title><author>Morbey, Yolanda E. ; Brassil, Chad E. ; Hendry, Andrew P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c417t-a63cb90d45692ecd8bfa85169686e4dbd9f504eacc72fc60a326fe1cef2ffdb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Age</topic><topic>Aging</topic><topic>Aging - physiology</topic><topic>Animals</topic><topic>Biological variation</topic><topic>Brackish</topic><topic>Breeding</topic><topic>Cellular senescence</topic><topic>Death</topic><topic>Ecosystem</topic><topic>Female animals</topic><topic>Freshwater</topic><topic>Marine</topic><topic>Mathematical independent variables</topic><topic>Mortality</topic><topic>Oceans</topic><topic>Oncorhynchus nerka</topic><topic>Pacific Ocean</topic><topic>Parametric models</topic><topic>Population Growth</topic><topic>Predation</topic><topic>Salmon</topic><topic>Salmon - growth & development</topic><topic>Survival analysis</topic><topic>Zoology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Morbey, Yolanda E.</creatorcontrib><creatorcontrib>Brassil, Chad E.</creatorcontrib><creatorcontrib>Hendry, Andrew P.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>MEDLINE - Academic</collection><jtitle>The American naturalist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morbey, Yolanda E.</au><au>Brassil, Chad E.</au><au>Hendry, Andrew P.</au><au>Daniel E. L. Promislow</au><au>Jonathan B. Losos</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rapid Senescence in Pacific Salmon</atitle><jtitle>The American naturalist</jtitle><addtitle>Am Nat</addtitle><date>2005-11-01</date><risdate>2005</risdate><volume>166</volume><issue>5</issue><spage>556</spage><epage>568</epage><pages>556-568</pages><issn>0003-0147</issn><eissn>1537-5323</eissn><coden>AMNTA4</coden><abstract>Any useful evolutionary theory of senescence must be able to explain variation within and among natural populations and species. This requires a careful characterization of age‐specific mortality rates in nature as well as the intrinsic and extrinsic factors that influence these rates. We perform this task for two populations of semelparous Pacific salmon. During the breeding season, estimated daily mortality rates increased from 0 to 0.2–0.5 (depending on the year) over the course of several weeks. Early‐arriving individuals had a later onset and/or a lower rate of senescence in each breeding season, consistent with adaptive expectations based on temporal variation in selection. Interannual variation in senescence was large, in part because of extrinsic factors (e.g., water temperature). Predation rates were higher in Pick Creek sockeye salmon (anadromousOncorhynchus nerka) than in Meadow Creek kokanee (nonanadromousO. nerka), but in contrast to evolutionary theory, senescence was not more rapid in the former. Interannual variation may have obscured interpopulation divergence in senescence. Pacific salmon are a promising system for further studies on the physiological, evolutionary, and genetic bases of senescence. In particular, we encourage further research to disentangle the relative importance of adaptive and nonadaptive variation in senescence.</abstract><cop>United States</cop><pub>The University of Chicago Press</pub><pmid>16224721</pmid><doi>10.1086/491720</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Age Aging Aging - physiology Animals Biological variation Brackish Breeding Cellular senescence Death Ecosystem Female animals Freshwater Marine Mathematical independent variables Mortality Oceans Oncorhynchus nerka Pacific Ocean Parametric models Population Growth Predation Salmon Salmon - growth & development Survival analysis Zoology |
| title | Rapid Senescence in Pacific Salmon |
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