River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data

Most research to date on the status of the river lamprey, Lampetra fluviatilis L. in Latvia has been done based on catch statistics data. The aim of this study was to explore the present status of the river lamprey fishery in Latvia to improve the understanding of catch statistics data. Currently, r...

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Main Authors: Abersons Kaspar, Birzaks Jānis
Format: Article
Language:English
Published: Sciendo 2014-09-01
Series:Archives of Polish Fisheries
Subjects:
Online Access:https://doi.org/10.2478/aopf-2014-0017
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author Abersons Kaspar
Birzaks Jānis
author_facet Abersons Kaspar
Birzaks Jānis
author_sort Abersons Kaspar
collection DOAJ
description Most research to date on the status of the river lamprey, Lampetra fluviatilis L. in Latvia has been done based on catch statistics data. The aim of this study was to explore the present status of the river lamprey fishery in Latvia to improve the understanding of catch statistics data. Currently, river lamprey fishing in Latvia is carried out at 24 fishing grounds located on 17 rivers. The most popular fishing gear is the lamprey fyke net, but lamprey weirs and lamprey trammel nets are also used. The type and design of the fishing gear depends on the parameters of the fishing ground. The catch size is highly variable and is greatly affected by the number of non-resources related circumstances, such as fishing regulations and meteorological factors determining the intensity of lamprey migration during the fishing season and opportunities for fishing during periods of the most intense migration. The fishing effort and the type of fishing gear have also largely changed since the 1960s and 1970s. Therefore, the fluctuation in both the long- and short-term catch data may not correspond to changes in the actual status of the lamprey population.
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spelling doaj.art-88b18a17638d441287f72a768dd50c9b2022-12-21T21:25:30ZengSciendoArchives of Polish Fisheries2083-61392014-09-0122316917910.2478/aopf-2014-0017aopf-2014-0017River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics dataAbersons Kaspar0Birzaks Jānis1Fish Resources Research Department, Institute of Food Safety, Animal Health and Environment “BIOR” Daugavgr̄vas iela 8, Riga, LV-1048, LatviaFish Resources Research Department, Institute of Food Safety, Animal Health and Environment “BIOR” Daugavgr̄vas iela 8, Riga, LV-1048, LatviaMost research to date on the status of the river lamprey, Lampetra fluviatilis L. in Latvia has been done based on catch statistics data. The aim of this study was to explore the present status of the river lamprey fishery in Latvia to improve the understanding of catch statistics data. Currently, river lamprey fishing in Latvia is carried out at 24 fishing grounds located on 17 rivers. The most popular fishing gear is the lamprey fyke net, but lamprey weirs and lamprey trammel nets are also used. The type and design of the fishing gear depends on the parameters of the fishing ground. The catch size is highly variable and is greatly affected by the number of non-resources related circumstances, such as fishing regulations and meteorological factors determining the intensity of lamprey migration during the fishing season and opportunities for fishing during periods of the most intense migration. The fishing effort and the type of fishing gear have also largely changed since the 1960s and 1970s. Therefore, the fluctuation in both the long- and short-term catch data may not correspond to changes in the actual status of the lamprey population.https://doi.org/10.2478/aopf-2014-0017catch statisticsfishing gearfishing managementriver lamprey
spellingShingle Abersons Kaspar
Birzaks Jānis
River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data
Archives of Polish Fisheries
catch statistics
fishing gear
fishing management
river lamprey
title River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data
title_full River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data
title_fullStr River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data
title_full_unstemmed River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data
title_short River lamprey, Lampetra fluviatilis L., fishery in Latvia – insight into the origin of catch statistics data
title_sort river lamprey lampetra fluviatilis l fishery in latvia insight into the origin of catch statistics data
topic catch statistics
fishing gear
fishing management
river lamprey
url https://doi.org/10.2478/aopf-2014-0017
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