Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean
Norway lobster ( Nephrops norvegicus ) is one of the most valuable shellfish resources in the Mediterranean and the northeast Atlantic. Sustainable management of its fishery require long-term scientific monitoring of its stocks. Population dynamics, fishery, and exploitation status of the Norway lob...
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ftdoajarticles:oai:doaj.org/article:c0cc13344653477d86b5599e62616f31 2024-01-07T09:45:26+01:00 Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean Alexios Lolas Dimitris Vafidis 2021-01-01T00:00:00Z https://doi.org/10.3390/w13030289 https://doaj.org/article/c0cc13344653477d86b5599e62616f31 EN eng MDPI AG https://www.mdpi.com/2073-4441/13/3/289 https://doaj.org/toc/2073-4441 doi:10.3390/w13030289 2073-4441 https://doaj.org/article/c0cc13344653477d86b5599e62616f31 Water, Vol 13, Iss 3, p 289 (2021) length–frequency distribution sexual maturity growth fishing mortality experimental bottom trawl Pagasitikos Gulf Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 article 2021 ftdoajarticles https://doi.org/10.3390/w13030289 2023-12-10T01:43:15Z Norway lobster ( Nephrops norvegicus ) is one of the most valuable shellfish resources in the Mediterranean and the northeast Atlantic. Sustainable management of its fishery require long-term scientific monitoring of its stocks. Population dynamics, fishery, and exploitation status of the Norway lobster were studied over a long time series (between 2008 and 2014) in a semi enclosed gulf in Easter Mediterranean (Pagasitikos Gulf). Sampling was carried out using a commercial bottom trawl with a codend mesh size of 28 mm in three different regions within the Gulf. Sex was identified macroscopically and all individuals were measured and weighed. Growth and Age groups were investigated by analysis of length–frequency distributions of the Carapace length (CL) for both sexes. Fishing, Natural and Total Mortality, along with Exploitation rate of the total stock were estimated by the FiSAT software package. Females were further examined and classified based on their maturity stage and the size at onset of sexual maturity was estimated by Probit analysis. Temporal differences in mean CL were detected for both sexes, with a tendency of lower values each year, along with a respective increase in Fishing Mortality and Exploitation Rate, indicating the effects of fishing pressure over the population. Size at onset of sexual maturity was estimated at 32.6 mm, higher than the official mesh sizes for creels (28 mm) and gillnets (26 mm). According to the analyses, the local Norway lobster stock is over-exploited, which should be taken under consideration by the regional policy makers. Article in Journal/Newspaper Northeast Atlantic Directory of Open Access Journals: DOAJ Articles Norway Water 13 3 289 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
length–frequency distribution sexual maturity growth fishing mortality experimental bottom trawl Pagasitikos Gulf Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
spellingShingle |
length–frequency distribution sexual maturity growth fishing mortality experimental bottom trawl Pagasitikos Gulf Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Alexios Lolas Dimitris Vafidis Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean |
topic_facet |
length–frequency distribution sexual maturity growth fishing mortality experimental bottom trawl Pagasitikos Gulf Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
description |
Norway lobster ( Nephrops norvegicus ) is one of the most valuable shellfish resources in the Mediterranean and the northeast Atlantic. Sustainable management of its fishery require long-term scientific monitoring of its stocks. Population dynamics, fishery, and exploitation status of the Norway lobster were studied over a long time series (between 2008 and 2014) in a semi enclosed gulf in Easter Mediterranean (Pagasitikos Gulf). Sampling was carried out using a commercial bottom trawl with a codend mesh size of 28 mm in three different regions within the Gulf. Sex was identified macroscopically and all individuals were measured and weighed. Growth and Age groups were investigated by analysis of length–frequency distributions of the Carapace length (CL) for both sexes. Fishing, Natural and Total Mortality, along with Exploitation rate of the total stock were estimated by the FiSAT software package. Females were further examined and classified based on their maturity stage and the size at onset of sexual maturity was estimated by Probit analysis. Temporal differences in mean CL were detected for both sexes, with a tendency of lower values each year, along with a respective increase in Fishing Mortality and Exploitation Rate, indicating the effects of fishing pressure over the population. Size at onset of sexual maturity was estimated at 32.6 mm, higher than the official mesh sizes for creels (28 mm) and gillnets (26 mm). According to the analyses, the local Norway lobster stock is over-exploited, which should be taken under consideration by the regional policy makers. |
format |
Article in Journal/Newspaper |
author |
Alexios Lolas Dimitris Vafidis |
author_facet |
Alexios Lolas Dimitris Vafidis |
author_sort |
Alexios Lolas |
title |
Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean |
title_short |
Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean |
title_full |
Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean |
title_fullStr |
Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean |
title_full_unstemmed |
Population Dynamics, Fishery, and Exploitation Status of Norway Lobster ( Nephrops norvegicus ) in Eastern Mediterranean |
title_sort |
population dynamics, fishery, and exploitation status of norway lobster ( nephrops norvegicus ) in eastern mediterranean |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/w13030289 https://doaj.org/article/c0cc13344653477d86b5599e62616f31 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Water, Vol 13, Iss 3, p 289 (2021) |
op_relation |
https://www.mdpi.com/2073-4441/13/3/289 https://doaj.org/toc/2073-4441 doi:10.3390/w13030289 2073-4441 https://doaj.org/article/c0cc13344653477d86b5599e62616f31 |
op_doi |
https://doi.org/10.3390/w13030289 |
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Water |
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13 |
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3 |
container_start_page |
289 |
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1787426961113481216 |