Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management.
The market demand for octopus grows each year, but landings are decreasing, and prices are rising. The present study investigated (1) diversity of Octopodidae in the Western Indian Ocean (WIO) and (2) connectivity and genetic structure of Octopus cyanea and O. vulgaris populations in order to obtain...
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ftdoajarticles:oai:doaj.org/article:d9cd49e3a70840f1b307a17d1ba3b898 2023-05-15T13:22:32+02:00 Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. Annelore Hilde M Van Nieuwenhove Hajaniaina Andrianavalonarivo Ratsimbazafy Marc Kochzius 2019-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0214748 https://doaj.org/article/d9cd49e3a70840f1b307a17d1ba3b898 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0214748 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0214748 https://doaj.org/article/d9cd49e3a70840f1b307a17d1ba3b898 PLoS ONE, Vol 14, Iss 5, p e0214748 (2019) Medicine R Science Q article 2019 ftdoajarticles https://doi.org/10.1371/journal.pone.0214748 2022-12-31T09:07:27Z The market demand for octopus grows each year, but landings are decreasing, and prices are rising. The present study investigated (1) diversity of Octopodidae in the Western Indian Ocean (WIO) and (2) connectivity and genetic structure of Octopus cyanea and O. vulgaris populations in order to obtain baseline data for management plans. A fragment of the cytochrome C oxidase subunit 1 (COI) gene was sequenced in 275 octopus individuals from Madagascar, Kenya and Tanzania. In addition, 41 sequences of O. vulgaris from South Africa, Brazil, Amsterdam Island, Tristan da Cunha, Senegal and Galicia were retrieved from databases and included in this study. Five different species were identified using DNA barcoding, with first records for O. oliveri and Callistoctopus luteus in the WIO. For O. cyanea (n = 229, 563 bp), 22 haplotypes were found, forming one haplogroup. AMOVA revealed shallow but significant genetic population structure among all sites (ϕST = 0.025, p = 0.02), with significant differentiation among: (1) Kanamai, (2) southern Kenya, Tanzania, North and West Madagascar, (3) Southwest Madagascar and (4) East Madagascar (ϕCT = 0.035, p = 0.017). For O. vulgaris (n = 71, 482 bp), 15 haplotypes were identified, forming three haplogroups. A significant genetic population structure was found among all sites (ϕST = 0.82, p ≤ 0.01). Based on pairwise ϕST-values and hierarchical AMOVAs, populations of O. vulgaris could be grouped as follows: (1) Brazil, (2) Madagascar and (3) all other sites. A significant increase in genetic distance with increasing geographic distance was found (Z = 232443, 81 r = 0.36, p = 0.039). These results indicate that for O. cyanea four regions should be considered as separate management units in the WIO. The very divergent haplogroups in O. vulgaris from Brazil and Madagascar might be evolving towards speciation and therefore should be considered as separate species in FAO statistics. Article in Journal/Newspaper Amsterdam Island Directory of Open Access Journals: DOAJ Articles Indian Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) PLOS ONE 14 5 e0214748 |
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Open Polar |
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op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Annelore Hilde M Van Nieuwenhove Hajaniaina Andrianavalonarivo Ratsimbazafy Marc Kochzius Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. |
topic_facet |
Medicine R Science Q |
description |
The market demand for octopus grows each year, but landings are decreasing, and prices are rising. The present study investigated (1) diversity of Octopodidae in the Western Indian Ocean (WIO) and (2) connectivity and genetic structure of Octopus cyanea and O. vulgaris populations in order to obtain baseline data for management plans. A fragment of the cytochrome C oxidase subunit 1 (COI) gene was sequenced in 275 octopus individuals from Madagascar, Kenya and Tanzania. In addition, 41 sequences of O. vulgaris from South Africa, Brazil, Amsterdam Island, Tristan da Cunha, Senegal and Galicia were retrieved from databases and included in this study. Five different species were identified using DNA barcoding, with first records for O. oliveri and Callistoctopus luteus in the WIO. For O. cyanea (n = 229, 563 bp), 22 haplotypes were found, forming one haplogroup. AMOVA revealed shallow but significant genetic population structure among all sites (ϕST = 0.025, p = 0.02), with significant differentiation among: (1) Kanamai, (2) southern Kenya, Tanzania, North and West Madagascar, (3) Southwest Madagascar and (4) East Madagascar (ϕCT = 0.035, p = 0.017). For O. vulgaris (n = 71, 482 bp), 15 haplotypes were identified, forming three haplogroups. A significant genetic population structure was found among all sites (ϕST = 0.82, p ≤ 0.01). Based on pairwise ϕST-values and hierarchical AMOVAs, populations of O. vulgaris could be grouped as follows: (1) Brazil, (2) Madagascar and (3) all other sites. A significant increase in genetic distance with increasing geographic distance was found (Z = 232443, 81 r = 0.36, p = 0.039). These results indicate that for O. cyanea four regions should be considered as separate management units in the WIO. The very divergent haplogroups in O. vulgaris from Brazil and Madagascar might be evolving towards speciation and therefore should be considered as separate species in FAO statistics. |
format |
Article in Journal/Newspaper |
author |
Annelore Hilde M Van Nieuwenhove Hajaniaina Andrianavalonarivo Ratsimbazafy Marc Kochzius |
author_facet |
Annelore Hilde M Van Nieuwenhove Hajaniaina Andrianavalonarivo Ratsimbazafy Marc Kochzius |
author_sort |
Annelore Hilde M Van Nieuwenhove |
title |
Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. |
title_short |
Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. |
title_full |
Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. |
title_fullStr |
Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. |
title_full_unstemmed |
Cryptic diversity and limited connectivity in octopuses: Recommendations for fisheries management. |
title_sort |
cryptic diversity and limited connectivity in octopuses: recommendations for fisheries management. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2019 |
url |
https://doi.org/10.1371/journal.pone.0214748 https://doaj.org/article/d9cd49e3a70840f1b307a17d1ba3b898 |
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ENVELOPE(140.900,140.900,-66.735,-66.735) |
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Indian Tristan |
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Indian Tristan |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
PLoS ONE, Vol 14, Iss 5, p e0214748 (2019) |
op_relation |
https://doi.org/10.1371/journal.pone.0214748 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0214748 https://doaj.org/article/d9cd49e3a70840f1b307a17d1ba3b898 |
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https://doi.org/10.1371/journal.pone.0214748 |
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PLOS ONE |
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14 |
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