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Age determination in fishes and validation using fish using hard parts In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi.

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Relation http://eprints.cmfri.org.in/13314/
 
Title Age determination in fishes and validation using
fish using hard parts In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi.
 
Creator Abdussamad, E M
 
Subject age and growth
 
Description Fisheries management relies on understanding the fish population dynamics while determining
the biological parameters, including size at maturity, duration of spawning season, mortality
estimates, age and growth, Accurate information on age of fish is an important pre-requisite for
extracting precise information on growth, mortality, recruitment and other fundamental population
parameters of fishes for stock assessment. The outcome of conventional age estimates using length
frequency data depends upon the sample quality, selectivity of the fishing gear etc. The stock
assessment results may therefore be affected and sometimes give results which is having no bearing
on reality. The hard parts of the fishes also grow with the fish and the growth process may left some
inscription on such parts and if that can be interpreted properly, will get precise idea on growth.
These inscriptions may result from either changes in the environment which the fish inhabits, or
food availability, or physiological states of the fish. However, free swimming fishes always lives in
ideal conditions and do not leave any environment related markings in their skeletal structures. So
interpretation of hard part inscriptions need utmost care.
 
Date 2018
 
Type Teaching Resource
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/13314/1/11-Winter%20School%20on%20Recent%20Advances%20in%20Fishery%20Biology%20Techniques%20for%20Biodiversity%20Evaluation%20and%20Conservation_2018_Abdussamad.pdf
Abdussamad, E M (2018) Age determination in fishes and validation using fish using hard parts In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi. [Teaching Resource]