Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea
There is a significant lack of data for the biological parameters of beluga or great sturgeon, the largest fish in the Caspian Sea. The age, growth and fisheries indices for the stock status of beluga was investigated in the south Caspian Basin of Iran between 1990 and 2011. Fork lengths ranged betw...
Published in: | Croatian Journal of Fisheries |
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ftdoajarticles:oai:doaj.org/article:4264147bdba44518a317a45e95c47832 2023-05-15T15:41:32+02:00 Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea Fazli Hasan Tavakoli Mahmoud Khoshghalb Mohammad Reza Behrouz Moghim Mehdi 2020-03-01T00:00:00Z https://doi.org/10.2478/cjf-2020-0001 https://doaj.org/article/4264147bdba44518a317a45e95c47832 EN HR eng hrv Sciendo http://www.degruyter.com/view/j/cjf.2020.78.issue-1/cjf-2020-0001/cjf-2020-0001.xml?format=INT https://doaj.org/toc/1848-0586 1848-0586 doi:10.2478/cjf-2020-0001 https://doaj.org/article/4264147bdba44518a317a45e95c47832 Croatian Journal of Fisheries, Vol 78, Iss 1, Pp 1-10 (2020) growth parameters maturity life history great sturgeon caspian sea Aquaculture. Fisheries. Angling SH1-691 article 2020 ftdoajarticles https://doi.org/10.2478/cjf-2020-0001 2022-12-31T11:12:10Z There is a significant lack of data for the biological parameters of beluga or great sturgeon, the largest fish in the Caspian Sea. The age, growth and fisheries indices for the stock status of beluga was investigated in the south Caspian Basin of Iran between 1990 and 2011. Fork lengths ranged between 113-420 cm and weights from 8.0 to 725.0 kg. The growth parameters were L∞ = 440 cm, K = 0.027 year−1, t0 = − 5.8 years. The age at first capture (tc) was 13.1 years. The long-term age composition data showed age up to 63 years, and the ages 12-19 years comprised 76.7% of the total catch. The generation length was 33 years. The values of “KF” were close to 1 or >1, indicating that beluga sturgeon is in a favorable condition in the southern Caspian Sea. The length distribution showed that 24.2% of the catch is comprised of juveniles. Based on the age structure and age at first maturity, recruitment and growth overfishing occurred in beluga stocks. Therefore, increased length or age at first capture in future fishery policies should be implemented. The mega-spawners represented 4.4% of the fish captured and revealed an unhealthy population structure. Article in Journal/Newspaper Beluga Beluga* Directory of Open Access Journals: DOAJ Articles Croatian Journal of Fisheries 78 1 1 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Croatian |
topic |
growth parameters maturity life history great sturgeon caspian sea Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
growth parameters maturity life history great sturgeon caspian sea Aquaculture. Fisheries. Angling SH1-691 Fazli Hasan Tavakoli Mahmoud Khoshghalb Mohammad Reza Behrouz Moghim Mehdi Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea |
topic_facet |
growth parameters maturity life history great sturgeon caspian sea Aquaculture. Fisheries. Angling SH1-691 |
description |
There is a significant lack of data for the biological parameters of beluga or great sturgeon, the largest fish in the Caspian Sea. The age, growth and fisheries indices for the stock status of beluga was investigated in the south Caspian Basin of Iran between 1990 and 2011. Fork lengths ranged between 113-420 cm and weights from 8.0 to 725.0 kg. The growth parameters were L∞ = 440 cm, K = 0.027 year−1, t0 = − 5.8 years. The age at first capture (tc) was 13.1 years. The long-term age composition data showed age up to 63 years, and the ages 12-19 years comprised 76.7% of the total catch. The generation length was 33 years. The values of “KF” were close to 1 or >1, indicating that beluga sturgeon is in a favorable condition in the southern Caspian Sea. The length distribution showed that 24.2% of the catch is comprised of juveniles. Based on the age structure and age at first maturity, recruitment and growth overfishing occurred in beluga stocks. Therefore, increased length or age at first capture in future fishery policies should be implemented. The mega-spawners represented 4.4% of the fish captured and revealed an unhealthy population structure. |
format |
Article in Journal/Newspaper |
author |
Fazli Hasan Tavakoli Mahmoud Khoshghalb Mohammad Reza Behrouz Moghim Mehdi |
author_facet |
Fazli Hasan Tavakoli Mahmoud Khoshghalb Mohammad Reza Behrouz Moghim Mehdi |
author_sort |
Fazli Hasan |
title |
Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea |
title_short |
Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea |
title_full |
Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea |
title_fullStr |
Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea |
title_full_unstemmed |
Biological Parameters and Fisheries Indices of Beluga Sturgeon Huso Huso in the Southern Caspian Sea |
title_sort |
biological parameters and fisheries indices of beluga sturgeon huso huso in the southern caspian sea |
publisher |
Sciendo |
publishDate |
2020 |
url |
https://doi.org/10.2478/cjf-2020-0001 https://doaj.org/article/4264147bdba44518a317a45e95c47832 |
genre |
Beluga Beluga* |
genre_facet |
Beluga Beluga* |
op_source |
Croatian Journal of Fisheries, Vol 78, Iss 1, Pp 1-10 (2020) |
op_relation |
http://www.degruyter.com/view/j/cjf.2020.78.issue-1/cjf-2020-0001/cjf-2020-0001.xml?format=INT https://doaj.org/toc/1848-0586 1848-0586 doi:10.2478/cjf-2020-0001 https://doaj.org/article/4264147bdba44518a317a45e95c47832 |
op_doi |
https://doi.org/10.2478/cjf-2020-0001 |
container_title |
Croatian Journal of Fisheries |
container_volume |
78 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
10 |
_version_ |
1766374423188733952 |