Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins
Abstract Recently, the large migratory fishes of the family Serrasalmidae (Piaractus brachypomus and P. orinoquensis) were described as restricted to the Orinoco and Amazon basins. Both species provide important ecosystem services. They also are an important fisheries resource, which has caused that...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2022-10-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252022000300218&tlng=en |
| _version_ | 1811234569105440768 |
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| author | María Doris Escobar L. Izeni P. Farias Tomas Hrbek |
| author_facet | María Doris Escobar L. Izeni P. Farias Tomas Hrbek |
| author_sort | María Doris Escobar L. |
| collection | DOAJ |
| description | Abstract Recently, the large migratory fishes of the family Serrasalmidae (Piaractus brachypomus and P. orinoquensis) were described as restricted to the Orinoco and Amazon basins. Both species provide important ecosystem services. They also are an important fisheries resource, which has caused that their populations have decreased in recent years. National fisheries policies still consider both species as one, which leads to inefficiencies in their management and conservation. The aim of this study was to genetically characterize these two species, using microsatellite and mitochondrial markers, and discuss the implication of these results for conservation and management. We found that both species have moderate genetic diversity and varied patterns of genetic distribution in the fluvial landscape. Piaractus brachypomus presented genetic diversity of A=6.5; He=0.72; Ho=0.67; Ĥ=1.000; ᴫ=0.0092, three management units related to the evolutionary process of the Amazon basin and the effective sizes of local populations were smaller compared to P. orinoquensis, which presented genetic diversity of A=6.1; He=0.66; Ho=0.55; Ĥ=0.968; ᴫ=0.010 and comprises only one management unit. These results demonstrate the need to design management policies that focus on species and geographically restricted populations. |
| first_indexed | 2024-04-12T11:38:31Z |
| format | Article |
| id | doaj.art-52fbe239932143198d46bf06ddddfdd4 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-04-12T11:38:31Z |
| publishDate | 2022-10-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-52fbe239932143198d46bf06ddddfdd42022-12-22T03:34:44ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242022-10-0120310.1590/1982-0224-2022-0056Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basinsMaría Doris Escobar L.https://orcid.org/0000-0003-3232-3130Izeni P. Fariashttps://orcid.org/0000-0002-1416-4351Tomas Hrbekhttps://orcid.org/0000-0003-3239-7068Abstract Recently, the large migratory fishes of the family Serrasalmidae (Piaractus brachypomus and P. orinoquensis) were described as restricted to the Orinoco and Amazon basins. Both species provide important ecosystem services. They also are an important fisheries resource, which has caused that their populations have decreased in recent years. National fisheries policies still consider both species as one, which leads to inefficiencies in their management and conservation. The aim of this study was to genetically characterize these two species, using microsatellite and mitochondrial markers, and discuss the implication of these results for conservation and management. We found that both species have moderate genetic diversity and varied patterns of genetic distribution in the fluvial landscape. Piaractus brachypomus presented genetic diversity of A=6.5; He=0.72; Ho=0.67; Ĥ=1.000; ᴫ=0.0092, three management units related to the evolutionary process of the Amazon basin and the effective sizes of local populations were smaller compared to P. orinoquensis, which presented genetic diversity of A=6.1; He=0.66; Ho=0.55; Ĥ=0.968; ᴫ=0.010 and comprises only one management unit. These results demonstrate the need to design management policies that focus on species and geographically restricted populations.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252022000300218&tlng=enCachama blancaFishery managementMorocotoPacuPirapitinga |
| spellingShingle | María Doris Escobar L. Izeni P. Farias Tomas Hrbek Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins Neotropical Ichthyology Cachama blanca Fishery management Morocoto Pacu Pirapitinga |
| title | Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins |
| title_full | Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins |
| title_fullStr | Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins |
| title_full_unstemmed | Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins |
| title_short | Genetic comparison of populations of Piaractus brachypomus and P. orinoquensis (Characiformes: Serrasalmidae) of the Amazon and Orinoco basins |
| title_sort | genetic comparison of populations of piaractus brachypomus and p orinoquensis characiformes serrasalmidae of the amazon and orinoco basins |
| topic | Cachama blanca Fishery management Morocoto Pacu Pirapitinga |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252022000300218&tlng=en |
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