About: Age determination in fish

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Knowledge of fish age characteristics is necessary for stock assessments, and to develop management or conservation plans. Size is generally associated with age; however, there are variations in size at any particular age for most fish species making it difficult to estimate one from the other with precision. Therefore, researchers interested in determining a fish age look for structures which increase incrementally with age. The most commonly used techniques involve counting natural growth rings on the scales, otoliths, vertebrae, fin spines, eye lenses, teeth, or bones of the jaw, pectoral girdle, and opercular series. Even reliable aging techniques may vary among species; often, several different bony structures are compared among a population in order to determine the most accurate met

Attributes	Values
rdf:type	Thing
rdfs:label	Age determination in fish (en) Leeftijdsaflezing (nl)
rdfs:comment	Leeftijdsaflezing wordt binnen de visserijbiologie gebruikt om de leeftijdssamenstelling van een visstapel te kunnen bepalen. Aan de hand van patronen in de gehoorbeentjes van vissen, hun vinstralen of schubben wordt geschat hoe oud een vis was toen die werd gevangen. (nl) Knowledge of fish age characteristics is necessary for stock assessments, and to develop management or conservation plans. Size is generally associated with age; however, there are variations in size at any particular age for most fish species making it difficult to estimate one from the other with precision. Therefore, researchers interested in determining a fish age look for structures which increase incrementally with age. The most commonly used techniques involve counting natural growth rings on the scales, otoliths, vertebrae, fin spines, eye lenses, teeth, or bones of the jaw, pectoral girdle, and opercular series. Even reliable aging techniques may vary among species; often, several different bony structures are compared among a population in order to determine the most accurate met (en)
rdfs:seeAlso	Age class structure Fish scale Otolith
foaf:depiction
dcterms:subject	Fish anatomy Senescence in non-human organisms
Wikipage page ID	31632332 (xsd:integer)
Wikipage revision ID	1107065137 (xsd:integer)
Link from a Wikipage to another Wikipage	Vertebrae Vision in fishes Common carp Common roach Antonie van Leeuwenhoek Sturgeon Freshwater drum Yellow perch Fish anatomy Catostomidae Senescence in non-human organisms Esox lucius European eel Fish fin Fish jaw Fish scale Johan Hjort Herring Burbot Operculum (fish) Calcified European plaice D’Arcy Wentworth Thompson Fin ray Fish vertebra Cleithra Otoliths
Link from a Wikipage to an external page	https://web.archive.org/web/20181122005517/http:/www.dnrec.delaware.gov/fw/Fisheries/Documents/agegrowth.pdf http://etext.virginia.edu/toc/modeng/public/AriHian.html
sameAs	Age determination in fish Age determination in fish Age determination in fish
dbp:wikiPageUsesTemplate	dbt:Efn dbt:Multiple_image dbt:Notes dbt:Refbegin dbt:Refend dbt:Reflist dbt:See_also dbt:Diversity_of_fish
thumbnail	wiki-commons:Special:FilePath/Removing_a_red_snapper_otolith.jpg?width=300
align	right (en)
caption	Sagittal otolith from a 74-year-old freshwater drum, Aplodinotus grunniens (en) Fish otolith on a sectioning saw (en) Scale of a common carp (en) Still transparent juvenile herring. The otoliths are visible left of the eye. (en) Some bony structures such as fin rays and pectoral spines can be harvested without sacrificing the fish, unlike otoliths. (en)
direction	vertical (en)
image	Fish otolith on sectioning saw - USGS.jpg (en) Herringjuvenilekils.jpg (en) Lingcodskeleton1600ppx.JPG (en) Oldest freshwater drum sagittal otolith.jpg (en) PSM V35 D074 Scale of common carp.jpg (en)
width	220 (xsd:integer)
has abstract	Knowledge of fish age characteristics is necessary for stock assessments, and to develop management or conservation plans. Size is generally associated with age; however, there are variations in size at any particular age for most fish species making it difficult to estimate one from the other with precision. Therefore, researchers interested in determining a fish age look for structures which increase incrementally with age. The most commonly used techniques involve counting natural growth rings on the scales, otoliths, vertebrae, fin spines, eye lenses, teeth, or bones of the jaw, pectoral girdle, and opercular series. Even reliable aging techniques may vary among species; often, several different bony structures are compared among a population in order to determine the most accurate method. (en) Leeftijdsaflezing wordt binnen de visserijbiologie gebruikt om de leeftijdssamenstelling van een visstapel te kunnen bepalen. Aan de hand van patronen in de gehoorbeentjes van vissen, hun vinstralen of schubben wordt geschat hoe oud een vis was toen die werd gevangen. (nl)
prov:wasDerivedFrom	wikipedia-en:Age_determination_in_fish?oldid=1107065137&ns=0
page length (characters) of wiki page	14535 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Age_determination_in_fish
is Link from a Wikipage to another Wikipage of	Beringraja rhina Cleithrum Estimating the age of fish Erna Mohr Fish scale Hanako (fish) Identification of aging in fish Age determination in fishes
is Wikipage redirect of	Estimating the age of fish Identification of aging in fish Age determination in fishes
is foaf:primaryTopic of	wikipedia-en:Age_determination_in_fish

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