000	03087cam  2200349za 4500
001	9.833168
003	CaOODSP
005	20221107150147
007	cr |||||||||||
008	170228s2017    oncabd  ob   f000 0 eng d
040	|aCaOODSP|beng
041	|aeng|bfre
043	|an-cn-nt
086	1 |aFs70-5/2016-115E-PDF
245	00|aComparison of scales, pectoral fin rays, and otoliths for estimating age, growth, and mortality of lake whitefish, Coregonus clupeaformis, in Great Slave Lake |h[electronic resource] / |cXinhua Zhu ... [et al].
246	1 |iTitle at head of French abstract: |aComparaison des écailles, rayons des nageoires pectorales et otolithes dans l'estimation de l'âge, la croissance et la mortalité du grand corégone (Coregonus clupeaformis) dans le Grand lac des Esclaves
260	|aOttawa : |bFisheries and Oceans Canada, |cc2017.
300	|av, 28 p. : |bill. (mostly in col.), col. map, charts
490	1 |aCanadian Science Advisory Secretariat (CSAS), research document, |x1919-5044 ; |v2016/115, Central and Arctic Region
500	|aCover title.
500	|a“January 2017.”
504	|aIncludes bibliographical references.
520	3 |a“It has been well documented that otoliths are the preferred hard structure for estimating the age of Coregonids. Additionally, the slower growth due to short growing seasons experienced in populations from the sub-arctic may alter the utility of alternative, non-lethal structures for estimating ages. In this study, scales, pectoral fin rays and otoliths from Great Slave Lake (GSL) Lake Whitefish Coregonus clupeaformis (Mitchill, 1818) were compared for differences in processing time efficiency, annular assignments, precision biases and reader uncertainty. Among the three ageing structures, pectoral fin rays took longest to process followed by scales and then otoliths. Readers’ confidence was highest for otoliths, followed by pectoral fin rays and then scales. Annuli in ground and baked otoliths appeared as dark, narrow lines with regular spacing; however, annuli in pectoral fin rays and scales were more variable in appearance. Readings of pectoral fin rays had the highest and largest uncertainty while readings of otoliths had the lowest uncertainty. Within-reader precision was highest for age estimates from otoliths, followed by scales and pectoral fin ray sections. Reader confidence, within reader precision and age estimates themselves, were all affected by age structure and age class”--Abstract, p. iv.
546	|aIncludes abstract in French.
692	07|2gccst|aFreshwater fish
692	07|2gccst|aBiology
700	1 |aZhu, Xinhua.
710	1 |aCanada. |bDepartment of Fisheries and Oceans.
710	1 |aCanada. |bEcosystems and Oceans Science.
710	2 |aCanadian Science Advisory Secretariat.
830	#0|aResearch document (Canadian Science Advisory Secretariat)|x1919-5044 ; |v2016/115, Central and Arctic Region|w(CaOODSP)9.507396
856	40|qPDF|s671 KB|uhttps://publications.gc.ca/collections/collection_2017/mpo-dfo/Fs70-5-2016-115-eng.pdf