1
|
Sampieri BR, Vieira PE, Teixeira MAL, Seixas VC, Pagliosa PR, Amaral ACZ, Costa FO. Molecular diversity within the genus Laeonereis (Annelida, Nereididae) along the west Atlantic coast: paving the way for integrative taxonomy. PeerJ 2021; 9:e11364. [PMID: 34123584 PMCID: PMC8164838 DOI: 10.7717/peerj.11364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 04/07/2021] [Indexed: 11/20/2022] Open
Abstract
The polychaete genus Laeonereis (Annelida, Nereididae) occurs over a broad geographic range and extends nearly across the entire Atlantic coast of America, from the USA to Uruguay. Despite the research efforts to clarify its diversity and systematics, mostly by morphological and ecological evidence, there is still uncertainty, mainly concerning the species Laeonereis culveri, which constitutes an old and notorious case of taxonomic ambiguity. Here, we revised the molecular diversity and distribution of Laeonereis species based on a multi-locus approach, including DNA sequence analyses of partial segments of the cytochrome c oxidase subunit I (COI), 16S rRNA, and 28S rRNA genes. We examined Laeonereis specimens collected from 26 sites along the American Atlantic coast from Massachusetts (USA) to Mar del Plata (Argentina). Although no comprehensive morphological examination was performed between different populations, the COI barcodes revealed seven highly divergent MOTUs, with a mean K2P genetic distance of 16.9% (from 6.8% to 21.9%), which was confirmed through four clustering algorithms. All MOTUs were geographically segregated, except for MOTUs 6 and 7 from southeastern Brazil, which presented partially overlapping ranges between Rio de Janeiro and São Paulo coast. Sequence data obtained from 16S rRNA and 28S rRNA markers supported the same MOTU delimitation and geographic segregation as those of COI, providing further evidence for the existence of seven deeply divergent lineages within the genus. The extent of genetic divergence between MOTUs observed in our study fits comfortably within the range reported for species of polychaetes, including Nereididae, thus providing a strong indication that they might constitute separate species. These results may therefore pave the way for integrative taxonomic studies, aiming to clarify the taxonomic status of the Laeonereis MOTUs herein reported.
Collapse
Affiliation(s)
- Bruno R Sampieri
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Museu de Zoologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| | - Pedro E Vieira
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| | - Marcos A L Teixeira
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| | - Victor C Seixas
- Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paulo R Pagliosa
- Laboratório de Biodiversidade e Conservação Marinha, Universidade Federal de Santa Catarina, Florianopólis, Santa Catarina, Brazil
| | | | - Filipe O Costa
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| |
Collapse
|
2
|
He X, Gilmore SR, Sutherland TF, Hajibabaei M, Miller KM, Westfall KM, Pawlowski J, Abbott CL. Biotic signals associated with benthic impacts of salmon farms from eDNA metabarcoding of sediments. Mol Ecol 2021; 30:3158-3174. [PMID: 33481325 DOI: 10.1111/mec.15814] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 12/06/2020] [Accepted: 01/15/2021] [Indexed: 01/04/2023]
Abstract
Environmental DNA (eDNA) metabarcoding can rapidly characterize the composition and diversity of benthic communities, thus it has high potential utility for routine assessments of benthic impacts of marine finfish farming. In this study, 126 sediment grab samples from 42 stations were collected at six salmon farms in British Columbia, Canada. Benthic community changes were assessed by both eDNA metabarcoding of metazoans and macrofaunal polychaete surveys. The latter was done by analysing 11,466 individuals using a combination of morphology-based taxonomy and DNA barcoding. Study objectives were to: (i) compare biotic signals associated with benthic impacts of salmon farming in the two data sources, and (ii) identify potential eDNA indicators to facilitate monitoring in Canada. Alpha diversity parameters were consistently reduced near fish cage edge and negatively correlated with pore-water sulphide concentration, with coefficients ranging from -0.62 to -0.48. Although Polychaeta are a common indicator group, the negative correlation with pore-water sulphide concentration was much stronger for Nematoda OTU richness (correlation coefficient: -0.86) than for Polychaeta (correlation coefficient: -0.38). Presence/absence of Capitella generally agreed well between the two methods despite that they differed in the volume of sediments sampled and the molecular marker used. Multiple approaches were used to identify OTUs related to organic enrichment statuses. We demonstrate that eDNA metabarcoding generates biotic signals that could be leveraged for environmental assessment of benthic impacts of fish farms in multiple ways: both alpha diversity and Nematoda OTU richness could be used to assess the spatial extent of impact, and OTUs related to organic enrichment could be used to develop local biotic indices.
Collapse
Affiliation(s)
- Xiaoping He
- Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, BC, Canada
| | - Scott R Gilmore
- Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, BC, Canada
| | - Terri F Sutherland
- Pacific Science Enterprise Centre, Fisheries and Oceans Canada, West Vancouver, BC, Canada
| | - Mehrdad Hajibabaei
- Department of Integrative Biology & Centre for Biodiversity Genomics, University of Guelph, Guelph, ON, Canada
| | - Kristina M Miller
- Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, BC, Canada
| | - Kristen M Westfall
- Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, BC, Canada
| | - Jan Pawlowski
- Department of Genetics and Evolution, University of Geneva, Geneva, Switzerland.,Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland.,ID-Gene Ecodiagnostics, Geneva, Switzerland
| | - Cathryn L Abbott
- Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, BC, Canada
| |
Collapse
|
3
|
Seixas VC, Steiner TM, Solé-Cava AM, Amaral ACZ, Paiva PC. Hidden diversity within the Diopatra cuprea complex (Annelida: Onuphidae): morphological and genetics analyses reveal four new species in the south-west Atlantic. Zool J Linn Soc 2020. [DOI: 10.1093/zoolinnean/zlaa032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Diopatra is the most species-rich genus of Onuphidae with about 60 species. Although 14 species have been reported for Brazil, the cosmopolitan D. cuprea is the most commonly reported from the area, including populations with a large morphological diversity. To better elucidate this species complex, we use morphological and molecular data, and reveal a hidden diversity. Thus, we describe four new species (D. hannelorae sp. nov., D. marinae sp. nov., D. pectiniconicum sp. nov. and D. victoriae sp. nov.) and discuss their geographical and bathymetrical distributions. None of the analysed specimens could be identified as D. cuprea based on available sequences. New taxonomic characters were highlighted, including jaw morphology, which was the determinant factor to differentiate D. marinae from D. victoriae. Phylogenetic analysis indicates three (COI and ND4) or four (concatenated) lineages, because D. marinae was not always reciprocally monophyletic. Sequence-based species delimitation also indicates three to five species, depending on the method used. Inter- and intragroup genetic divergence and haplotype network analysis supported four species. The divergence time among species indicates that Pleistocene sea-level fluctuations and the Vitória–Trindade chain limited the gene flow between northern and southern populations and contributed to the emergence of species, mainly in the case of D. marinae and D. victoriae.
Collapse
Affiliation(s)
- Victor Corrêa Seixas
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Tatiana Menchini Steiner
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Antônio Mateo Solé-Cava
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ, Brazil
| | | | - Paulo Cesar Paiva
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
4
|
Tovar-Hernández MA, Salazar-Silva P, De León-González JA. Lista faunística comentada de gusanos poliquetos en la bahía de La Paz, Baja California Sur, México (Annelida: Polychaeta) y nuevos registros. REV MEX BIODIVERS 2019. [DOI: 10.22201/ib.20078706e.2019.90.2764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
5
|
Ribeiro RP, Alves PR, de Almeida ZDS, Ruta C. A new species of Paraonis and an annotated checklist of polychaetes from mangroves of the Brazilian Amazon Coast (Annelida, Paraonidae). Zookeys 2018:1-34. [PMID: 29674886 PMCID: PMC5904532 DOI: 10.3897/zookeys.740.14640] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 01/14/2018] [Indexed: 12/04/2022] Open
Abstract
The polychaete fauna from the mangroves of the Amazon Coast in Maranhão state, Brazil, is reported in this study. Fourteen species are listed, namely Alittasuccinea (Leuckart, 1847); Arabella (Arabella) iricolor Montagu, 1804; Capitellacapitata (Fabricius, 1780) complex; Exogone (Exogone) breviantennata Hartmann-Schröder, 1959; Heteromastusfiliformis (Claparède, 1864); Isoldapulchella Müller, 1858; Mediomastuscaliforniensis Hartman, 1944; Namalycastisfauveli Nageswara Rao, 1981; Namalycastisgeayi (Gravier, 1901); Namalycastissenegalensis (Saint-Joseph, 1901); Nephtyssimoni Perkins, 1980; Paraonisamazonicasp. n.; Sigambrabassi (Hartman, 1945); and Sigambragrubii Müller, 1858. Among them, Namalycastisfauveli and Namalycastisgeayi are recorded for the first time in Brazil. Paraonisamazonicasp. n. is a new species for science, characterized by a rounded prostomium, 4–8 pairs of foliaceous branchiae, absent eyes, and two types of modified neurochaetae, acicular and hook-shaped.
Collapse
Affiliation(s)
| | - Paulo Ricardo Alves
- Universidade Federal Fluminense, Programa de Pós-Graduação em Biologia Marinha e Ambientes Costeiros, Departamento de Biologia Marinha. Laboratório de Sistemática e Ecologia de Polychaeta, Niterói, 24020-141, Rio de Janeiro, Brazil
| | - Zafira da Silva de Almeida
- Universidade Estadual do Maranhão, Laboratório de Pesca e Ecologia Aquática, São Luís, 65055-000, Maranhão, Brazil
| | - Christine Ruta
- Universidade Federal do Rio de Janeiro, Campus UFRJ-Macaé Professor Aloísio Teixeira. Núcleo em Ecologia e Desenvolvimentto Sócio-Ambiental de Macaé, Grupo de Sistemática e Ecologia de Organismos Bentônicos. Macaé, 27965-045, Rio de Janeiro, Brazil
| |
Collapse
|