The shore fishes of the Trindade–Martin Vaz insular complex: an update

Simon, Thiony; Macieira, Raphael M.; Joyeux, Jean‐Christophe

doi:10.1111/jfb.12126

Cited by 35 publications

(31 citation statements)

References 22 publications

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“…: Simon et al 2013a: 2116, 2120 (undescribed species; listed and photograph); Pinheiro et al 2015: 15, color fig. S. 38 (Dogaressa Seamount); Pinheiro et al 2018: 10, Southwestern Atlantic (SWA) Endemic reef fishes – Annotated Checklist: 31.…”

Section: Key To Brazilian Opistognathusmentioning

confidence: 99%

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Review of Brazilian jawfishes of the genus Opistognathus with descriptions of two new species (Teleostei, Opistognathidae)

Smith-Vaniz¹,

Tornabene²,

Macieira³

2018

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A new species of jawfish, Opistognathusthionyisp. n., is described from the Vitória-Trindade Chain and Fernando de Noronha Archipelago off Brazil, a disjunct distribution of ca. 1,800 km. Opistognathusthionyi and its allopatric Caribbean sister-species, Opistognathusmaxillosus, both have a wide, fan-like upper margin of the subopercular flap and mostly over-lapping meristic data. The new species differs from O.maxillosus in having the darkest spot on the spinous dorsal fin, when present, between spines 2–5, versus always present between spines 6–9, the buccal area surrounding the esophageal opening pale versus very dark and fewer oblique scale rows in longitudinal series (45–52 vs. 69–85). A second new species, Opistognathusvicinussp. n., known from Brazil’s mainland, has completely over-lapping meristic values with its allopatric Caribbean sister-species O.whitehursti, but differs in lacking vomerine teeth and a supramaxilla and retaining the juvenile color pattern of the latter species in adults. Diagnoses, photographs, an identification key, and distributional maps are given for all Brazilian species of Opistognathus.Molecular phylogenetic analysis of partial cytochrome c oxidase subunit-I sequences indicates that specimens of the two allopatric pairs, O.thionyi – O.maxillosus and O.vicinus – O.whitehursti, form reciprocally monophyletic groups that differ from each other on average by 9 to 11%, with less than 1% average pair-wise genetic distance within-species. Similar patterns of phylogenetic structure were observed between reciprocally monophyletic (predominately allopatric) groups within nominal species of Opistognathusaurifrons, suggesting the possibility of at least two additional undescribed species from the Brazilian Province.

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Section: Key To Brazilian Opistognathusmentioning

confidence: 99%

“…2 Smith-Vaniz 1997: 1096 (in identification key); Simon et al 2013a: 2120 (listed); Pinheiro et al 2018, Southwestern Atlantic (SWA) Endemic reef fishes – Annotated Checklist: 30–31, color fig. 20.…”

Section: Key To Brazilian Opistognathusmentioning

confidence: 99%

Review of Brazilian jawfishes of the genus Opistognathus with descriptions of two new species (Teleostei, Opistognathidae)

Smith-Vaniz¹,

Tornabene²,

Macieira³

2018

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“…The VTR is an important barrier not only for the western boundary current system in the region (Costa et al, ; Evans et al, ; Legeais et al, ; Weatherly & Kim, ) but also for the barotropic tide, which rotates clockwise in the basin, propagating northward along the Brazilian margin (Figure ). The VTR sustains a rich reef fish fauna and is responsible for important ecological processes, as it genetically connects fish assemblages from the Brazilian continental margin to those from the Trindade and Martim Islands (Gasparini & Floeter, ; Pinheiro et al, ; Simon et al, ). Chlorophyll‐a maps (not shown) reveal a localized maximum of phytoplanktonic biomass over the submerged seamounts, surrounded by poor oligotrophic waters adjacent to the ridge, suggesting that intense vertical motion may take place in the region, pumping nutrient‐rich waters to the photic zone and affecting the base of the regional marine food‐web.…”

Section: Introductionmentioning

confidence: 99%

“…The VTR is an important barrier not only for the western boundary current system in the region (Costa et al, 2017;Evans et al, 1983;Legeais et al, 2013;Weatherly & Kim, 2000) but also for the barotropic tide, which rotates clockwise in the basin, propagating northward along the Brazilian margin ( Figure 1). The VTR sustains a rich reef fish fauna and is responsible for important ecological processes, as it genetically connects fish assemblages from the Brazilian continental margin to those from the Trindade and Martim Islands (Gasparini & Floeter, 2001;Pinheiro et al, 2015;Simon et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Internal Tide Generation at the Vitória‐Trindade Ridge, South Atlantic Ocean

et al. 2018

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Sea surface height data from multiple satellite altimetric missions are analyzed in order to investigate the surface manifestation of internal tides generated at the Vitória‐Trindade Ridge (VTR), in the western South Atlantic Ocean. The VTR is formed by a sequence of submerged seamounts disposed in a west‐east alignment around 20.5°S, extending for over 1,000 km from the Brazilian continental margin to the Trindade and Martim Vaz islands. Point‐wise harmonic analysis of the along‐track sea surface height data, combined with a two‐dimensional plane wave fitting at selected subregions, depicts well‐organized northbound and southbound wave beams radiating from the VTR, and propagating as far as ~1,000 km from the ridge. Energy convergence is observed at a focal point located circa 300 km south of the VTR, associated with a lens effect due to the arc‐shaped ridge. Wavenumber spectra show highest energy associated with wavelengths of 140 and 70 km, close to the theoretical values expected for the first and second baroclinic modes, respectively. Energy fluxes for the mode 1 principal lunar (M2) constituent reach values of 2 to 3 kW/m for the southward beams and 1 kW/m north of the VTR. Judging from its surface signature, the VTR appears to be the most significant internal tide generation site in the western South Atlantic.

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“…Six species represent new records for the Abrolhos region. The reef bass Pseudogramma gregoryi (Breder 1927) was previously recorded in north‐eastern Brazil (Eskinazi & Lima, ; Caires et al ., ) and on seamounts and islands of the Vitória‐Trindade chain (Simon et al ., ; Pinheiro et al ., ). Two specimens of the deep reef scorpionfish Scorpaenodes tredecimspinosus (Metzelaar 1919) and the presence of the black triggerfish Melichthys niger (Bloch 1786) recorded by ROVs also represent range extensions within the Brazilian coast.…”

Section: Fish Species Recorded By Dive and Remotely Operated Vehicle mentioning

confidence: 98%

Mesophotic fishes of the Abrolhos Shelf, the largest reef ecosystem in the South Atlantic

Simon

Pinheiro

Moura

et al. 2016

Journal of Fish Biology

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Fishes inhabiting rhodolith beds and reefs at mesophotic depths on the Abrolhos Shelf, which encompasses the largest and richest coral reef formation in the South Atlantic Ocean, were assessed through technical diving and remotely operated vehicles (ROVs). A total of 74 fish species were recorded, including at least one new species, one new record for the south-western Atlantic and six new records for the Abrolhos region. Overfishing, mining and port activities are already threatening many endangered and commercially important species recorded on the mesophotic reefs of Abrolhos Shelf, and the establishment of marine protected areas and off-reserve fisheries regulations are urgently needed.

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The shore fishes of the Trindade–Martin Vaz insular complex: an update

Cited by 35 publications

References 22 publications

Review of Brazilian jawfishes of the genus Opistognathus with descriptions of two new species (Teleostei, Opistognathidae)

Review of Brazilian jawfishes of the genus Opistognathus with descriptions of two new species (Teleostei, Opistognathidae)

Internal Tide Generation at the Vitória‐Trindade Ridge, South Atlantic Ocean

Mesophotic fishes of the Abrolhos Shelf, the largest reef ecosystem in the South Atlantic

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