Different speciation processes in a cryptobenthic reef fish from the Western Tropical Atlantic

Dias, Ricardo Marques; Lima, Sérgio M. Q.; Mendes, Liana F.; Almeida, Daniel F.; Paiva, Paulo Cesar; Britto, Marcelo R.

doi:10.1007/s10750-019-3966-z

Cited by 14 publications

(7 citation statements)

References 52 publications

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“…Regardless of all those situations, the recent wave of molecular systematic studies addressing CRFs in the Western Atlantic, including sequences from Brazil, revealed that several species considered widely distributed actually represent species complexes (e.g. Araujo et al, 2020; Dias et al, 2019; Maxfield et al, 2012; Muss et al, 2001; Smith‐Vaniz et al, 2018; Volk et al, 2021). This trend will likely be reinforced in future studies, also highlighting the need for more clear taxonomic recognition on the status of distinct populations in the Western Atlantic.…”

Section: Discussionmentioning

confidence: 99%

The Amazon‐Orinoco Barrier as a driver of reef‐fish speciation in the Western Atlantic through time

Araujo

Rocha

Lastrucci

et al. 2022

Journal of Biogeography

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Aim The Amazon‐Orinoco plume is the major biogeographical barrier between the Great Caribbean and the Brazilian Province. No study has so far addressed the influence of this barrier in a broad chrono‐phylogenetic context. Here, we evaluate the effects of the Amazon‐Orinoco plume barrier on the patterns of diversification of Western Atlantic reef fishes through time. Location Tropical Western Atlantic. Taxon Reef Fishes (Percomorpha). Methods We compiled DNA sequence data of 21 molecular markers from sister species/population pairs across 33 reef‐fish families in the Greater Caribbean biogeographical region and the Brazilian Province. The data included estimated divergence times between sister‐pairs based on previously published phylogenies and 94 newly proposed time‐trees. Divergence dates were compared with variations in the sedimentation discharge rate of the Amazon River and sea‐level fluctuations. To address the hypothesis that fishes with different adult sizes are affected differently by the Amazon‐Orinoco plume, we used a phylogenetic least squares regression to test the relationship between maximum total body length and divergence times between the Caribbean and Brazilian sister‐pairs. Results We identified an increase in the rates of lineage diversification between sister‐pairs of the Greater Caribbean and Brazilian Province reef fishes in the past 2.4 million years, in accordance with the period of higher sedimentation rates of the Amazon River and the more frequent sea‐level fluctuations in the Pleistocene. A strong relationship between total body length and effectiveness of the barrier through time was confirmed, with smaller species typically diverging earlier in periods when sedimentation rates of the Amazon River were significantly lower. Conclusions The strong biogeographical signal detected in this study across different lineages of reef fishes clearly indicates that the Amazon‐Orinoco plume played a significant role in the diversification of the Atlantic reef‐fish fauna. The temporal pattern of diversifications indicates a correlation between the permeability of the plume, sea‐level fluctuations, variability in the volume of the discharge and fish body size, with the barrier's influence being weaker on larger fishes.

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Section: Discussionmentioning

confidence: 99%

The Amazon‐Orinoco Barrier as a driver of reef‐fish speciation in the Western Atlantic through time

Araujo

Rocha

Lastrucci

et al. 2022

Journal of Biogeography

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“…We found the closely related Brazilian and AR lineages were likely formed as a result of dispersal and subsequent isolation from the Amazon River outflow rather than a vicariant event where the Amazon River restricted gene flow between a continuous population. The Amazon River is a well‐known ecological barrier for many marine taxa and often results in speciation for low dispersal organisms like C. glaucofraenum and C. venezuelae (Briggs & Bowen, 2012; Dias et al., 2019; Floeter et al., 2008). The Amazon River likely intermittently restricted gene flow for the past 9 Myr due to fluctuating sea levels that created or prevented dispersal corridors (Hoorn et al., 2017; Rocha, 2003).…”

Section: Discussionmentioning

confidence: 99%

“…Third, freshwater and sediment outflow from rivers can create impassable biogeographic barriers to some taxa (Rocha, 2003). Fourth, genetic isolation can result among populations living in geographically isolated habitats, such as oceanic islands (Dias et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Going against the flow: Barriers to gene flow impact patterns of connectivity in cryptic coral reef gobies throughout the western Atlantic

Volk

Konvalina

Floeter

et al. 2020

Journal of Biogeography

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Aim Complex oceanographic features have historically caused difficulty in understanding gene flow in marine taxa. Here, we evaluate the impact of potential phylogeographic barriers to gene flow and assess demography and evolutionary history of a coral reef goby species complex. Specifically, we test how the Amazon River outflow and ocean currents impact gene flow. Location Western Atlantic. Taxon The bridled goby (Coryphopterus glaucofraenum) and sand‐canyon goby (C. venezuelae) species complex. Methods We used mitochondrial DNA and 2,401 genomic SNPs to investigate evolutionary history and test hypotheses of how major barriers impact species‐level differentiation. We used clustering algorithms and pairwise FST to assess population differentiation caused by minor barriers within and among regions. Finally, we tested alternate hypotheses of demographic history via coalescent simulations to determine the most plausible spread across the Western Atlantic. Results We found two unique clades of C. glaucofraenum along the Brazilian coast and the oceanic island Atol das Rocas (AR) that are more closely related to C. venzuelae. Further genetic structure within the Caribbean and separately along the Brazilian coast led to at least two distinct populations in each Province. Coalescent simulations indicated that an ancestral population of C. venezuelae split from C. glaucofraenum in the Caribbean, dispersed to Brazil, then spread to AR. Main conclusions Species‐level genetic differentiation has resulted from the Amazon River outflow and isolation of AR. Population differentiation within the Caribbean matched previous studies indicating an east‐west pattern of divergence. Brazilian population differentiation was impacted by the cold‐water upwelling filter at Cabo Frio. Overall, this research highlights how barriers to gene flow impact speciation and genetic structure within western Atlantic gobies and provides insight into the role oceanographic features have in the speciation process of fishes.

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“…Both explain the initial separation of MOTU 1 from the South American MOTUs (2 to 7). Since its establishment, freshwater discharge from the Amazon River to the Atlantic Ocean (~7 mya; Hoorn et al, 2010 ) has been responsible for speciation between the Caribbean and Brazilian populations ( Sales et al, 2017 ; Dias et al, 2019 ). Considering the South American lineages, the first splitting might have occurred between south and north populations of South America (MOTU 7 × MOTUs 2–6), perhaps ~23° S latitude, where there is currently a biogeographic break marked by a transitional area of marine fauna ( Floeter & Soares-Gomes, 1999 ).…”

Section: Discussionmentioning

confidence: 99%

Molecular diversity within the genus Laeonereis (Annelida, Nereididae) along the west Atlantic coast: paving the way for integrative taxonomy

Sampieri

Vieira

Teixeira

et al. 2021

PeerJ

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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.

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Different speciation processes in a cryptobenthic reef fish from the Western Tropical Atlantic

Cited by 14 publications

References 52 publications

The Amazon‐Orinoco Barrier as a driver of reef‐fish speciation in the Western Atlantic through time

The Amazon‐Orinoco Barrier as a driver of reef‐fish speciation in the Western Atlantic through time

Going against the flow: Barriers to gene flow impact patterns of connectivity in cryptic coral reef gobies throughout the western Atlantic

Molecular diversity within the genus Laeonereis (Annelida, Nereididae) along the west Atlantic coast: paving the way for integrative taxonomy

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