Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya

Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya

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Four fleets of hanging coefficients 0.2, 0.4, 0.6 and 0.8 were used to determine size selectivity and selection factors of Nile perch populations. There was a linear relationship between mesh size and modal length of capture. Positively skewed length frequency distributions were found for smaller mesh sizes with entanglement becoming more prominent in mesh sizes above 101 mm. Nets of 114 to 141 mm stretched mesh yielded higher economic returns than small meshes, the catch consisting of few largefish.

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Bibliographic Details
Main Author: Asila, A.A.
Format: book_section biblioteca
Language:English
Published: Lake Victoria Fisheries Research Project 1999
Subjects:Biology, Fisheries, Information Management, Africa, Kenya, stock assessment, data collection, data report, Lates niloticus,
Online Access:http://hdl.handle.net/1834/22506
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id dig-aquadocs-1834-22506
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spelling dig-aquadocs-1834-225062021-07-07T02:37:49Z Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya Report on the Fourth FIDAWOG Workshop held at Kisumu, 16 to 20 August 1999 Asila, A.A. Biology Fisheries Information Management Africa Kenya stock assessment data collection data report Lates niloticus Four fleets of hanging coefficients 0.2, 0.4, 0.6 and 0.8 were used to determine size selectivity and selection factors of Nile perch populations. There was a linear relationship between mesh size and modal length of capture. Positively skewed length frequency distributions were found for smaller mesh sizes with entanglement becoming more prominent in mesh sizes above 101 mm. Nets of 114 to 141 mm stretched mesh yielded higher economic returns than small meshes, the catch consisting of few largefish. Lake Victoria Fisheries Research Project Phase II LVFRP/TECH/99/07 2021-06-24T16:02:20Z 2021-06-24T16:02:20Z 1999 book_section http://hdl.handle.net/1834/22506 en LVFRP Technical Document http://www.lvfo.org/ application/pdf application/pdf 92-98 Lake Victoria Fisheries Research Project Jinja, Uganda http://aquaticcommons.org/id/eprint/4956 424 2011-09-29 15:39:53 4956 Lake Victoria Fisheries Organization
institution UNESCO
collection DSpace
country Francia
countrycode FR
component Bibliográfico
access En linea
databasecode dig-aquadocs
tag biblioteca
region Europa del Oeste
libraryname Repositorio AQUADOCS
language English
topic Biology
Fisheries
Information Management
Africa
Kenya
stock assessment
data collection
data report
Lates niloticus
Biology
Fisheries
Information Management
Africa
Kenya
stock assessment
data collection
data report
Lates niloticus
spellingShingle Biology
Fisheries
Information Management
Africa
Kenya
stock assessment
data collection
data report
Lates niloticus
Biology
Fisheries
Information Management
Africa
Kenya
stock assessment
data collection
data report
Lates niloticus
Asila, A.A.
Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya
description Four fleets of hanging coefficients 0.2, 0.4, 0.6 and 0.8 were used to determine size selectivity and selection factors of Nile perch populations. There was a linear relationship between mesh size and modal length of capture. Positively skewed length frequency distributions were found for smaller mesh sizes with entanglement becoming more prominent in mesh sizes above 101 mm. Nets of 114 to 141 mm stretched mesh yielded higher economic returns than small meshes, the catch consisting of few largefish.
format book_section
topic_facet Biology
Fisheries
Information Management
Africa
Kenya
stock assessment
data collection
data report
Lates niloticus
author Asila, A.A.
author_facet Asila, A.A.
author_sort Asila, A.A.
title Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya
title_short Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya
title_full Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya
title_fullStr Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya
title_full_unstemmed Selectivity of gillnets for Nile perch, Lates niloticus (L.), in Lake Victoria, Kenya
title_sort selectivity of gillnets for nile perch, lates niloticus (l.), in lake victoria, kenya
publisher Lake Victoria Fisheries Research Project
publishDate 1999
url http://hdl.handle.net/1834/22506
work_keys_str_mv AT asilaaa selectivityofgillnetsfornileperchlatesniloticuslinlakevictoriakenya
AT asilaaa reportonthefourthfidawogworkshopheldatkisumu16to20august1999
_version_ 1756077639814086656

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