Additions and emendations to the annotated checklist of anthiadine fishes (Percoidei: Serranidae)

Anderson, William D.

doi:10.11646/zootaxa.5195.6.5

Cited by 5 publications

(1 citation statement)

References 23 publications

(7 reference statements)

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“…Certainly, taxonomic revisions and redefined species complexes within some reef fish genera demonstrate high levels of speciation across broad distributions which span island chains, oceanic islands and seamounts in the Western and Indo-Pacific. These include the Pomacentrus philippinus group, which in the Coral Sea is represented by P. imitator but in the adjacent GBR is P. magniseptus (Allen et al 2017), the goby genus Nemateleotris (Tea and Larson 2023) and multiple Pseudanthias species (Anderson 2018(Anderson , 2022Gill 2022) many of which are deep-water specialists. The compilation and comparison of updated species inventories is required to test the applicability of the Habitat Persistence Hypothesis in the Coral Sea, as well as genetic sampling to establish patterns of connectivity between mesophotic populations in adjacent regions.…”

Section: Discussionmentioning

confidence: 99%

Tropical seamounts as stepping-stones for coral reef fishes: range extensions and new regional distributions from mesophotic ecosystems in the Coral Sea, Australia

Galbraith,

Cresswell,

McClure

et al. 2023

Preprint

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Seamounts and remote oceanic islands provide valuable natural laboratories in which to study patterns and processes in marine biodiversity. A central hypothesis arising from studies of these systems is the ecological function of seamounts as stepping stones for dispersal and population connectivity. Evidence of this mechanism exists for a range of taxa, including coral reef fishes, but is still lacking from many tropical seamounts in remote regions. In this study, we used remotely operated vehicles and baited remote underwater video systems to survey fish and benthic communities between 1 – 100m on seamounts in the Coral Sea Marine Park (CSMP), Australia. We found evidence to support the stepping stone model of ecological connectivity from new observations of sixteen coral reef fishes which have previously not been recorded by quantitative surveys in the region. The widespread distribution of many of these species throughout the full latitudinal extent of the CSMP suggests that the there is greater connectivity between mesophotic habitats in the Coral Sea and surrounding biogeographic regions than previously known. We also found a wide variety of mesophotic habitats and recorded significant depth range extensions for seventy-eight fishes in these habitats. This further highlights the potential role of increased habitat area and heterogeneity in a stepping stone effect throughout the region. Four of the fish occurrence records represent significant range extensions into the Coral Sea from adjacent biogeographic regions and thirteen fishes recorded by this study in the CSMP are not known from the neighbouring Great Barrier Reef, despite its close proximity. Although the Coral Sea remains relatively understudied, these findings suggest that larger-scale models of marine biogeography are relevant to communities in the region, particularly at mesophotic depths. Given the extent and the spatial arrangement of seamounts in the Coral Sea, our findings emphasise that the region is an important link between the centre of marine biodiversity in the Coral Triangle and the Southwest Pacific. Greater mesophotic sampling effort and genetic studies are necessary to understand the nature of connectivity and, to establish the role of regional seamount chains, like the Coral Sea reefs, in broader marine biogeographic processes.

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Section: Discussionmentioning

confidence: 99%

Tropical seamounts as stepping-stones for coral reef fishes: range extensions and new regional distributions from mesophotic ecosystems in the Coral Sea, Australia

Galbraith,

Cresswell,

McClure

et al. 2023

Preprint

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Tropical seamounts as stepping-stones for coral reef fishes: range extensions and new regional distributions from mesophotic ecosystems in the Coral Sea, Australia

Galbraith,

Cresswell,

McClure

et al. 2024

Mar. Biodivers.

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Seamounts and remote oceanic islands serve as valuable natural laboratories in which to study patterns and processes in marine biodiversity. A central hypothesis arising from studies of these systems is the ecological function of seamounts as stepping-stones for dispersal and population connectivity. Evidence of this mechanism exists for a range of taxa, including coral reef fishes, but is still lacking from many tropical seamounts in remote regions. In this study, we used remotely operated vehicles and baited remote underwater video systems to survey fish and benthic communities between 1 and 100 m on seamounts in the Coral Sea Marine Park (CSMP), Australia. We found evidence to support the stepping-stone model of ecological connectivity from new observations of 16 coral reef fishes which have previously not been recorded by quantitative surveys in the region. The widespread distribution of many of these species throughout the full latitudinal extent of the CSMP suggests that there is greater connectivity between mesophotic habitats in the Coral Sea and surrounding biogeographic regions than previously known. We also found a wide variety of mesophotic habitats and recorded significant depth range extensions for 78 fishes in these habitats. This further highlights the potential role of increased habitat area and heterogeneity in a stepping-stone effect throughout the region. Four of the fish occurrence records represent significant range extensions into the Coral Sea from adjacent biogeographic regions, and 13 fishes recorded by this study in the CSMP are not known from the neighbouring Great Barrier Reef, despite its close proximity. Although the Coral Sea remains relatively understudied, these findings suggest that larger-scale models of marine biogeography are relevant to communities in the region, particularly at mesophotic depths. Given the extent and the spatial arrangement of seamounts in the Coral Sea, our findings emphasise that the region is an important link between the centre of marine biodiversity in the Coral Triangle and the Southwest Pacific. Greater mesophotic sampling effort and genetic studies are necessary to understand the nature of connectivity and to establish the role of regional seamount chains, like the Coral Sea reefs, in broader marine biogeographic processes.

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Compsanthias, new genus of Pacific Anthiadidae (Teleostei)

GILL

2024

Zootaxa

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Compsanthias new genus is described for Anthias ventralis Randall (type species) and A. hawaiiensis Randall, which had been previously classified in the genus Pseudanthias Bleeker. Compsanthias is distinguished from other anthiadid genera in having the following combination of characters: dorsal-fin rays X,16–18, usually X,17; anal-fin rays III,9–10, usually III,9; pectoral-fin rays 14–16, usually 15, most rays branched; branched caudal-fin rays 7+6; tubed scales in lateral series 39–46. Three characters are presented as evidence for monophyly, although each needs further investigation: relatively large infraorbital 3, modally III,9 anal-fin rays, and presence of red to purple oblique stripe from behind upper part of eye to upper part of head. Additional potential synapomorphies relevant to the phylogenetic position of the genus are discussed.

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Additions and emendations to the annotated checklist of anthiadine fishes (Percoidei: Serranidae)

Cited by 5 publications

References 23 publications

Tropical seamounts as stepping-stones for coral reef fishes: range extensions and new regional distributions from mesophotic ecosystems in the Coral Sea, Australia

Tropical seamounts as stepping-stones for coral reef fishes: range extensions and new regional distributions from mesophotic ecosystems in the Coral Sea, Australia

Tropical seamounts as stepping-stones for coral reef fishes: range extensions and new regional distributions from mesophotic ecosystems in the Coral Sea, Australia

Compsanthias, new genus of Pacific Anthiadidae (Teleostei)

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