Spatio-Temporal Variation in Length-Weight Relationships and Condition of the Ribbonfish Trichiurus lepturus (Linnaeus, 1758): Implications for Fisheries Management
Publication Date
August 31, 2016
Journal
PLOS ONE
Authors
Abdullah Al Nahdi, Carlos Garcia De Leaniz & Andrew J. King
Volume
11
Issue
8
Pages
e0161989
DOI
https://dx.plos.org/10.1371/journal.pone.0161989
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0161989
Scopus
84990231770
Mendeley
http://www.mendeley.com/research/spatiotemporal-variation-lengthweight-relationships-condition-ribbonfish-trichiurus-lepturus-linnaeu
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Mendeley | Further Information

{"title"=>"Spatio-temporal variation in length-weight relationships and condition of the ribbonfish Trichiurus lepturus (Linnaeus, 1758): Implications for fisheries management", "type"=>"journal", "authors"=>[{"first_name"=>"Abdullah", "last_name"=>"Al Nahdi", "scopus_author_id"=>"35770209200"}, {"first_name"=>"Carlos", "last_name"=>"Garcia De Leaniz", "scopus_author_id"=>"15623072100"}, {"first_name"=>"Andrew J.", "last_name"=>"King", "scopus_author_id"=>"35752030300"}], "year"=>2016, "source"=>"PLoS ONE", "identifiers"=>{"sgr"=>"84990231770", "doi"=>"10.1371/journal.pone.0161989", "scopus"=>"2-s2.0-84990231770", "pui"=>"612518079", "issn"=>"19326203"}, "id"=>"e0228f0c-b9d6-3b3b-b3df-177763bf2be3", "abstract"=>"Knowledge of length-weight relationships for commercially exploited fish is an important tool for assessing and managing of fish stocks. However, analyses of length-weight relationship fisheries data typically do not consider the inherent differences in length-weight relationships for fish caught from different habitats, seasons, or years, and this can affect the utility of these data for developing condition indices or calculating fisheries biomass. Here, we investigated length-weight relationships for ribbonfish Trichiurus lepturus in the waters of the Arabian Sea off Oman collected during three periods (2001–02, 2007–08, and 2014–15) and showed that a multivariate modelling approach that considers the areas and seasons in which ribbonfish were caught improved estimation of length-weight relationships. We used the outputs of these models to explore spatio-temporal variations in condition indices and relative weights among ribbonfish, revealing fish of 85–125 cm were in the best overall condition. We also found that condition differed according to where and when fish were caught, with condition lowest during spring and pre-south-west monsoon periods and highest during and after the south-west monsoons. We interpret these differences to be a consequence of variability in temperature and food availability. Based on our findings, we suggest fishing during seasons that have the lowest impact on fish condition and which are commercially most viable; such fishery management would enhance fisheries conservation and economic revenue in the region.", "link"=>"http://www.mendeley.com/research/spatiotemporal-variation-lengthweight-relationships-condition-ribbonfish-trichiurus-lepturus-linnaeu", "reader_count"=>7, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Researcher"=>2, "Student > Ph. D. Student"=>1, "Student > Master"=>2}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Researcher"=>2, "Student > Ph. D. Student"=>1, "Student > Master"=>2}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Environmental Science"=>2, "Agricultural and Biological Sciences"=>4}, "reader_count_by_subdiscipline"=>{"Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>4}, "Unspecified"=>{"Unspecified"=>1}, "Environmental Science"=>{"Environmental Science"=>2}}, "group_count"=>1}

Scopus | Further Information

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