Age Determination of Eels in the French Mediterranean Lagoons Using Classical Methods and an Image Analysis System
Several methods are used for age determination of eels in the French mediterranean lagoons (observation of the whole otolith after clearing, grinding and polishing, dyeing, SEM and image analysis). Two types of otoliths are observed depending on the width of the growth rings which is probably relate...
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| Veröffentlicht in: | Internationale Revue der gesamten Hydrobiologie 1990, Vol.75 (6), p.745-754 |
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| container_title | Internationale Revue der gesamten Hydrobiologie |
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| creator | Panfili, J. Ximenes, M.-C. Do Chi, T. |
| description | Several methods are used for age determination of eels in the French mediterranean lagoons (observation of the whole otolith after clearing, grinding and polishing, dyeing, SEM and image analysis). Two types of otoliths are observed depending on the width of the growth rings which is probably related to the environmental conditions. Furthermore, the growth checks are located nearby or inside the opaque rings. A computer assisted method is developed, with reference to the other methods, with the aim of improving the efficiency of collecting and processing age and growth data. With further developments and increasing knowledge of the life‐history of elvers and juvenile eels, it seems possible to use an image analysis system for ageing eels in lagoons. Nevertheless, the most important point is to validate the results before using them for growth populations studies. |
| doi_str_mv | 10.1002/iroh.19900750608 |
| format | Article |
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Two types of otoliths are observed depending on the width of the growth rings which is probably related to the environmental conditions. Furthermore, the growth checks are located nearby or inside the opaque rings. A computer assisted method is developed, with reference to the other methods, with the aim of improving the efficiency of collecting and processing age and growth data. With further developments and increasing knowledge of the life‐history of elvers and juvenile eels, it seems possible to use an image analysis system for ageing eels in lagoons. Nevertheless, the most important point is to validate the results before using them for growth populations studies.</description><identifier>ISSN: 0020-9309</identifier><identifier>EISSN: 1522-2632</identifier><identifier>EISSN: 0020-9309</identifier><identifier>DOI: 10.1002/iroh.19900750608</identifier><language>eng</language><publisher>Berlin: Akademie Verlag, Berlin</publisher><subject>age determination ; Anguilla anguilla ; Animal biology ; Brackish ; eel ; Freshwater ; image analysis ; Life Sciences ; mediterranean lagoons ; otolith ; Vertebrate Zoology</subject><ispartof>Internationale Revue der gesamten Hydrobiologie, 1990, Vol.75 (6), p.745-754</ispartof><rights>Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4298-9e54f4b9fb5da842d0640b067037301f04ba73fab9d064b3d0f45b42ace081c83</citedby><cites>FETCH-LOGICAL-c4298-9e54f4b9fb5da842d0640b067037301f04ba73fab9d064b3d0f45b42ace081c83</cites><orcidid>0000-0003-0504-2384</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Firoh.19900750608$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Firoh.19900750608$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,780,784,885,1417,4024,27923,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://hal.umontpellier.fr/hal-03679555$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Panfili, J.</creatorcontrib><creatorcontrib>Ximenes, M.-C.</creatorcontrib><creatorcontrib>Do Chi, T.</creatorcontrib><title>Age Determination of Eels in the French Mediterranean Lagoons Using Classical Methods and an Image Analysis System</title><title>Internationale Revue der gesamten Hydrobiologie</title><addtitle>Int. Revue ges. Hydrobiol. Hydrogr</addtitle><description>Several methods are used for age determination of eels in the French mediterranean lagoons (observation of the whole otolith after clearing, grinding and polishing, dyeing, SEM and image analysis). Two types of otoliths are observed depending on the width of the growth rings which is probably related to the environmental conditions. Furthermore, the growth checks are located nearby or inside the opaque rings. A computer assisted method is developed, with reference to the other methods, with the aim of improving the efficiency of collecting and processing age and growth data. With further developments and increasing knowledge of the life‐history of elvers and juvenile eels, it seems possible to use an image analysis system for ageing eels in lagoons. Nevertheless, the most important point is to validate the results before using them for growth populations studies.</description><subject>age determination</subject><subject>Anguilla anguilla</subject><subject>Animal biology</subject><subject>Brackish</subject><subject>eel</subject><subject>Freshwater</subject><subject>image analysis</subject><subject>Life Sciences</subject><subject>mediterranean lagoons</subject><subject>otolith</subject><subject>Vertebrate Zoology</subject><issn>0020-9309</issn><issn>1522-2632</issn><issn>0020-9309</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNqNkU1v1DAQhi0EEkvhztEnJA4p468kPnBYLd0PaaESUPZoOYmzMTh2a6fA_nu8CqrgBAdrJM_zjOx5EXpJ4JIA0Dc2huGSSAlQCSihfoQWRFBa0JLRx2iRESgkA_kUPUvpKwCDqiYLFJdHg9-ZycTRej3Z4HHo8ZVxCVuPp8HgdTS-HfB709lMRe2N9nivjyH4hG-S9Ue8cjol22qXqWkIXcLad_ng3ajz-KXX7pRswp9OaTLjc_Sk1y6ZF7_rBbpZX31ebYv99Wa3Wu6LllNZF9II3vNG9o3odM1pByWHBsoKWMWA9MAbXbFeN_LcaVgHPRcNp7o1UJO2Zhfo9Tx30E7dRjvqeFJBW7Vd7tX5DlhZSSHEd5LZVzN7G8PdvUmTGm1qjXP5u-E-KVLymkHN_gMEIvPKMwgz2MaQUjT9wxMIqHNi6pyY-iOxrLydlR_WmdM_ebX7eL392y9m3-Y1_3zwdfymyopVQh0-bNSXzYFV9LBSa_YLz8Kp9w</recordid><startdate>1990</startdate><enddate>1990</enddate><creator>Panfili, J.</creator><creator>Ximenes, M.-C.</creator><creator>Do Chi, T.</creator><general>Akademie Verlag, Berlin</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>H97</scope><scope>H98</scope><scope>L.G</scope><scope>7SN</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0003-0504-2384</orcidid></search><sort><creationdate>1990</creationdate><title>Age Determination of Eels in the French Mediterranean Lagoons Using Classical Methods and an Image Analysis System</title><author>Panfili, J. ; Ximenes, M.-C. ; Do Chi, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4298-9e54f4b9fb5da842d0640b067037301f04ba73fab9d064b3d0f45b42ace081c83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>age determination</topic><topic>Anguilla anguilla</topic><topic>Animal biology</topic><topic>Brackish</topic><topic>eel</topic><topic>Freshwater</topic><topic>image analysis</topic><topic>Life Sciences</topic><topic>mediterranean lagoons</topic><topic>otolith</topic><topic>Vertebrate Zoology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Panfili, J.</creatorcontrib><creatorcontrib>Ximenes, M.-C.</creatorcontrib><creatorcontrib>Do Chi, T.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Environmental Sciences and Pollution Management</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) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Aquaculture Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Ecology Abstracts</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Internationale Revue der gesamten Hydrobiologie</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Panfili, J.</au><au>Ximenes, M.-C.</au><au>Do Chi, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Age Determination of Eels in the French Mediterranean Lagoons Using Classical Methods and an Image Analysis System</atitle><jtitle>Internationale Revue der gesamten Hydrobiologie</jtitle><addtitle>Int. Revue ges. Hydrobiol. Hydrogr</addtitle><date>1990</date><risdate>1990</risdate><volume>75</volume><issue>6</issue><spage>745</spage><epage>754</epage><pages>745-754</pages><issn>0020-9309</issn><eissn>1522-2632</eissn><eissn>0020-9309</eissn><abstract>Several methods are used for age determination of eels in the French mediterranean lagoons (observation of the whole otolith after clearing, grinding and polishing, dyeing, SEM and image analysis). Two types of otoliths are observed depending on the width of the growth rings which is probably related to the environmental conditions. Furthermore, the growth checks are located nearby or inside the opaque rings. A computer assisted method is developed, with reference to the other methods, with the aim of improving the efficiency of collecting and processing age and growth data. With further developments and increasing knowledge of the life‐history of elvers and juvenile eels, it seems possible to use an image analysis system for ageing eels in lagoons. Nevertheless, the most important point is to validate the results before using them for growth populations studies.</abstract><cop>Berlin</cop><pub>Akademie Verlag, Berlin</pub><doi>10.1002/iroh.19900750608</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-0504-2384</orcidid></addata></record> |
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| language | eng |
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| subjects | age determination Anguilla anguilla Animal biology Brackish eel Freshwater image analysis Life Sciences mediterranean lagoons otolith Vertebrate Zoology |
| title | Age Determination of Eels in the French Mediterranean Lagoons Using Classical Methods and an Image Analysis System |
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