An approach to estimate the natural mortality rate in fish stocks

cg.description.theme	Aquaculture	en_US
cg.identifier.status	Open access
cg.identifier.url	http://www.worldfishcenter.org/Naga/Naga26-1/pdf/naga_26no1_feature5.pdf
cg.identifier.worldfish	1713
cg.subject.agrovoc	saltwater fishes
cg.subject.worldfish	stocking
cg.subject.worldfish	marine fish
dc.creator	Cubillos, L.A.
dc.date.accessioned	2019-01-01T14:20:50Z
dc.date.available	2019-01-01T14:20:50Z
dc.date.issued	2003
dc.description.abstract	A simple approach is introduced to estimate the natural mortality rate (M) of fish stocks. The approach is based on the age at maximum cohort biomass, or critical length (L) concept. The ratio of the critical length to the asymptotic length ( = L/L8) is relatively constant in 141 fish stocks at 0.62 (CV = 21.4 per cent) and the relationship M = 3K(1- )/ is derived and could be used to estimate M, where K is the growth coefficient of the von Bertalanffy growth function. Average values of are given for the various Families of fish in order to estimate M based on closely related species.
dc.format	application/pdf
dc.identifier	naga_26no1_feature5.pdf
dc.identifier.citation	Naga 26(1): 17-19
dc.identifier.uri	https://hdl.handle.net/20.500.12348/2194
dc.language	en
dc.publisher	WorldFish
dc.rights	CC BY 4.0
dc.source	NAGA
dc.title	An approach to estimate the natural mortality rate in fish stocks
dc.type	Journal Article
dcterms.bibliographicCitation	Cubillos, L.A. (2003). An approach to estimate the natural mortality rate in fish stocks. Naga 26(1): 17-19

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