Relationship between zooplankton abundance and the early marine life history of juvenile chum salmon Oncorhynchus keta in eastern Hokkaido, Japan
Interannual variations in abundance, timing of outmigration from rivers, growth rate and condition of juvenile chum salmon (Oncorhynchus keta) were studied in the Nemuro Strait (eastern Hokkaido, Japan) during 1999-2002 to establish a possible relationship to zooplankton abundance. The otolith micro...
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| Veröffentlicht in: | Fisheries science 2009-04, Vol.75 (2), p.303-316 |
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| creator | Saito, T.(National Salmon Resources Center, Sapporo (Japan)) Shimizu, I Seki, J Nagasawa, K |
| description | Interannual variations in abundance, timing of outmigration from rivers, growth rate and condition of juvenile chum salmon (Oncorhynchus keta) were studied in the Nemuro Strait (eastern Hokkaido, Japan) during 1999-2002 to establish a possible relationship to zooplankton abundance. The otolith microstructure of juveniles was examined each year in late June to determine their time and size at sea entry (i.e., outmigration), and to estimate the early marine growth rates. Salmon outmigration peaked in mid or late May, which coincided, in three of the four study years, with the peak release of juveniles into rivers within the study area. Abundance, growth rate and condition of fish were higher in 2001, when, compared to other years, smaller fish experienced higher growth rates, coinciding with greater zooplankton abundance for that year. Our results suggest that high zooplankton abundance positively influenced juvenile chum salmon growth and the condition of the fish during their early marine life despite their small size at sea entry. |
| doi_str_mv | 10.1007/s12562-008-0040-6 |
| format | Article |
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The otolith microstructure of juveniles was examined each year in late June to determine their time and size at sea entry (i.e., outmigration), and to estimate the early marine growth rates. Salmon outmigration peaked in mid or late May, which coincided, in three of the four study years, with the peak release of juveniles into rivers within the study area. Abundance, growth rate and condition of fish were higher in 2001, when, compared to other years, smaller fish experienced higher growth rates, coinciding with greater zooplankton abundance for that year. Our results suggest that high zooplankton abundance positively influenced juvenile chum salmon growth and the condition of the fish during their early marine life despite their small size at sea entry.</description><identifier>ISSN: 0919-9268</identifier><identifier>EISSN: 1444-2906</identifier><identifier>DOI: 10.1007/s12562-008-0040-6</identifier><language>eng</language><publisher>Japan: Springer Japan</publisher><subject>AGUAS COSTERAS ; Biomedical and Life Sciences ; BODY CONDITION ; CICLO VITAL ; COASTAL WATERS ; CONDICION CORPORAL ; CYCLE DE DEVELOPPEMENT ; DENSIDAD DE LA POBLACION ; DENSITE DE POPULATION ; EAUX COTIERES ; ESTATOLITOS ; ETAT CORPOREL ; Fish ; Fish & Wildlife Biology & Management ; Food Science ; FORMAS JUVENILES ; Freshwater & Marine Ecology ; GROWTH RATE ; INDICE DE CRECIMIENTO ; JUVENILE ; JUVENILES ; LIFE CYCLE ; Life history ; Life Sciences ; Minors ; ONCORHYNCHUS KETA ; Original Article ; Plankton ; POPULATION DENSITY ; Rivers ; Salmon ; STATOLITHE ; STATOLITHS ; TAUX DE CROISSANCE ; ZOOPLANCTON ; ZOOPLANKTON</subject><ispartof>Fisheries science, 2009-04, Vol.75 (2), p.303-316</ispartof><rights>The Japanese Society of Fisheries Science 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c464t-fa88d29dd3f20eda9107a142ad26de950c609216433e78cb9652f47bd61c11303</citedby><cites>FETCH-LOGICAL-c464t-fa88d29dd3f20eda9107a142ad26de950c609216433e78cb9652f47bd61c11303</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12562-008-0040-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12562-008-0040-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Saito, T.(National Salmon Resources Center, Sapporo (Japan))</creatorcontrib><creatorcontrib>Shimizu, I</creatorcontrib><creatorcontrib>Seki, J</creatorcontrib><creatorcontrib>Nagasawa, K</creatorcontrib><title>Relationship between zooplankton abundance and the early marine life history of juvenile chum salmon Oncorhynchus keta in eastern Hokkaido, Japan</title><title>Fisheries science</title><addtitle>Fish Sci</addtitle><description>Interannual variations in abundance, timing of outmigration from rivers, growth rate and condition of juvenile chum salmon (Oncorhynchus keta) were studied in the Nemuro Strait (eastern Hokkaido, Japan) during 1999-2002 to establish a possible relationship to zooplankton abundance. The otolith microstructure of juveniles was examined each year in late June to determine their time and size at sea entry (i.e., outmigration), and to estimate the early marine growth rates. Salmon outmigration peaked in mid or late May, which coincided, in three of the four study years, with the peak release of juveniles into rivers within the study area. Abundance, growth rate and condition of fish were higher in 2001, when, compared to other years, smaller fish experienced higher growth rates, coinciding with greater zooplankton abundance for that year. Our results suggest that high zooplankton abundance positively influenced juvenile chum salmon growth and the condition of the fish during their early marine life despite their small size at sea entry.</description><subject>AGUAS COSTERAS</subject><subject>Biomedical and Life Sciences</subject><subject>BODY CONDITION</subject><subject>CICLO VITAL</subject><subject>COASTAL WATERS</subject><subject>CONDICION CORPORAL</subject><subject>CYCLE DE DEVELOPPEMENT</subject><subject>DENSIDAD DE LA POBLACION</subject><subject>DENSITE DE POPULATION</subject><subject>EAUX COTIERES</subject><subject>ESTATOLITOS</subject><subject>ETAT CORPOREL</subject><subject>Fish</subject><subject>Fish & Wildlife Biology & Management</subject><subject>Food Science</subject><subject>FORMAS JUVENILES</subject><subject>Freshwater & Marine Ecology</subject><subject>GROWTH RATE</subject><subject>INDICE DE CRECIMIENTO</subject><subject>JUVENILE</subject><subject>JUVENILES</subject><subject>LIFE CYCLE</subject><subject>Life history</subject><subject>Life Sciences</subject><subject>Minors</subject><subject>ONCORHYNCHUS KETA</subject><subject>Original Article</subject><subject>Plankton</subject><subject>POPULATION DENSITY</subject><subject>Rivers</subject><subject>Salmon</subject><subject>STATOLITHE</subject><subject>STATOLITHS</subject><subject>TAUX DE 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between zooplankton abundance and the early marine life history of juvenile chum salmon Oncorhynchus keta in eastern Hokkaido, Japan</title><author>Saito, T.(National Salmon Resources Center, Sapporo (Japan)) ; Shimizu, I ; Seki, J ; Nagasawa, K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c464t-fa88d29dd3f20eda9107a142ad26de950c609216433e78cb9652f47bd61c11303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>AGUAS COSTERAS</topic><topic>Biomedical and Life Sciences</topic><topic>BODY CONDITION</topic><topic>CICLO VITAL</topic><topic>COASTAL WATERS</topic><topic>CONDICION CORPORAL</topic><topic>CYCLE DE DEVELOPPEMENT</topic><topic>DENSIDAD DE LA POBLACION</topic><topic>DENSITE DE POPULATION</topic><topic>EAUX COTIERES</topic><topic>ESTATOLITOS</topic><topic>ETAT CORPOREL</topic><topic>Fish</topic><topic>Fish & Wildlife Biology & Management</topic><topic>Food 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Sci</stitle><date>2009-04-01</date><risdate>2009</risdate><volume>75</volume><issue>2</issue><spage>303</spage><epage>316</epage><pages>303-316</pages><issn>0919-9268</issn><eissn>1444-2906</eissn><abstract>Interannual variations in abundance, timing of outmigration from rivers, growth rate and condition of juvenile chum salmon (Oncorhynchus keta) were studied in the Nemuro Strait (eastern Hokkaido, Japan) during 1999-2002 to establish a possible relationship to zooplankton abundance. The otolith microstructure of juveniles was examined each year in late June to determine their time and size at sea entry (i.e., outmigration), and to estimate the early marine growth rates. Salmon outmigration peaked in mid or late May, which coincided, in three of the four study years, with the peak release of juveniles into rivers within the study area. Abundance, growth rate and condition of fish were higher in 2001, when, compared to other years, smaller fish experienced higher growth rates, coinciding with greater zooplankton abundance for that year. Our results suggest that high zooplankton abundance positively influenced juvenile chum salmon growth and the condition of the fish during their early marine life despite their small size at sea entry.</abstract><cop>Japan</cop><pub>Springer Japan</pub><doi>10.1007/s12562-008-0040-6</doi><tpages>14</tpages></addata></record> |
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| subjects | AGUAS COSTERAS Biomedical and Life Sciences BODY CONDITION CICLO VITAL COASTAL WATERS CONDICION CORPORAL CYCLE DE DEVELOPPEMENT DENSIDAD DE LA POBLACION DENSITE DE POPULATION EAUX COTIERES ESTATOLITOS ETAT CORPOREL Fish Fish & Wildlife Biology & Management Food Science FORMAS JUVENILES Freshwater & Marine Ecology GROWTH RATE INDICE DE CRECIMIENTO JUVENILE JUVENILES LIFE CYCLE Life history Life Sciences Minors ONCORHYNCHUS KETA Original Article Plankton POPULATION DENSITY Rivers Salmon STATOLITHE STATOLITHS TAUX DE CROISSANCE ZOOPLANCTON ZOOPLANKTON |
| title | Relationship between zooplankton abundance and the early marine life history of juvenile chum salmon Oncorhynchus keta in eastern Hokkaido, Japan |
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