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| 02198cam 2200349zi 4500 |
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| 001 | 9.878802 |
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| 003 | CaOODSP |
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| 005 | 20221107165336 |
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| 006 | m o d f |
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| 007 | cr |n||||||||| |
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| 008 | 190903s1977 nscd #ob f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 043 | |an-cn--- |
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| 086 | 1 |aFs70-8/77-20E-PDF |
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| 100 | 1 |aClay, Douglas, |d1948- |eauthor. |
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| 245 | 10|aSelection of silver hake (Merluccius bilinearis) in kapron codends : |b(a preliminary report) / |cDouglas Clay. |
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| 264 | 1|aDartmouth, Nova Scotia : |bDepartment of Environment, Fisheries & Marine Service, Marine Fish Division, Bedford Institute of Oceanography, |c[1977] |
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| 300 | |a1 online resource (57 pages) : |bcharts. |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aCAFSAC res. doc. ; |v77/20 |
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| 500 | |a"Not to be cited without permission of author." |
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| 504 | |aIncludes bibliographical references (pages 9-10). |
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| 520 | |a"Selection is the variation of length frequency between a true population and what is caught and retained by the fishery. Selectivity is any factor that causes variation: Selectivity is important for two reasons. Firstly, it allows biologists who can rarely study a fish population directly, to use catch statistics more accurately to evaluate actual population numbers. This leads to more accurate assessment techniques and a better understanding of the population. Secondly, selectivity can be used as an important management tool to reduce mortality among juvenile and small fishes and increase the catch efficiency of larger fish"--page [1]. |
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| 692 | 07|2gccst|aFisheries |
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| 692 | 07|2gccst|aSalt water fish |
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| 710 | 1 |aCanada. |bDepartment of Fisheries and Oceans. |
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| 710 | 1 |aCanada. |bDept. of Fisheries and Oceans. |bScotia-Fundy Region. |bMarine Fish Division. |
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| 710 | 1 |aCanada. |bFisheries and Marine Service. |
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| 830 | #0|aCAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee)|v77/20|w(CaOODSP)9.869616 |
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| 856 | 40|qPDF|s2.05 MB|uhttps://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-77-20-eng.pdf |
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