Recognition of separate genera within Acropora based on new morphological, reproductive and genetic evidence from Acropora togianensis, and elevation of the subgenus Isopora Studer, 1878 to genus (Scleractinia: Astrocoeniidae; Acroporidae)

Wallace, Carden C.; Chen, C. A.; Fukami, Hironobu; Muir, Paul

doi:10.1007/s00338-007-0203-4

Cited by 76 publications

(70 citation statements)

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“…Consequently, the first revision to jointly consider DNA sequence data and traditional forms of evidence such as morphology and reproduction in a phylogenetic context only emerged more than a decade after the first scleractinian molecular phylogenies by Romano and Palumbi (1996) and Veron et al (1996). The pioneering study by Wallace et al (2007) used one mitochondrial (cytochome b) and one nuclear (histone 2a and 2b) gene to show that subgenus Isopora, previously placed within Acropora, was sufficiently distinct to be elevated to genus within family Acroporidae. Isopora tends to form more than one axial corallite per branch, while Acropora contains only a single axial corallite ).…”

Section: New Taxonomic Revisions Of Families and Generamentioning

confidence: 99%

The New Systematics of Scleractinia: Integrating Molecular and Morphological Evidence

Kitahara

Fukami

Benzoni

et al. 2016

The Cnidaria, Past, Present and Future

108

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The taxonomy of scleractinian corals has traditionally been established based on morphology at the "macro" scale since the time of Carl Linnaeus. Taxa described using macromorphology are useful for classifying the myriad of growth forms, yet new molecular and small-scale morphological data have challenged the natural historicity of many familiar groups, motivating multiple revisions at every taxonomic level. In this synthesis of scleractinian phylogenetics and systematics, we present the most current state of affairs in the field covering both zooxanthellate and azooxanthellate taxa, focusing on the progress of our phylogenetic understanding of this ecologically-significant clade, which today is supported by rich sets of molecular and morphological data. It is worth noting that when DNA sequence data was first used to investigate coral evolution in the 1990s, there was no concerted effort to use phylogenetic information to delineate problematic taxa. In the last decade, however, the incompatibility of coral taxonomy with their evolutionary history has become much clearer, as molecular analyses for corals have been improved upon technically and expanded to all major scleractinian clades, shallow and deep. We describe these methodological developments and summarise new taxonomic revisions based on robust inferences of the coral tree of life. Despite these efforts, there are still unresolved sections of the scleractinian phylogeny, resulting in uncertain taxonomy for several taxa. We highlight these and propose a way forward for the taxonomy of corals.

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Section: New Taxonomic Revisions Of Families and Generamentioning

confidence: 99%

The New Systematics of Scleractinia: Integrating Molecular and Morphological Evidence

Kitahara

Fukami

Benzoni

et al. 2016

The Cnidaria, Past, Present and Future

108

100

View full text Add to dashboard Cite

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“…It has been reported to number more than 100 species in the IndoPacifi c (Wallace 1999) compared with only 3 in the Caribbean. In this genus, the brooder coral genus Isopora was formerly included as a subgenus (Veron and Wallace 1984); however, Isopora was recently confi rmed as a separate genus by several analyses such as reproductive ecology, genetic analyses, and morphology (Wallace et al 2007). At present, all species belonging to the genus Acropora are spawners that release fl oating bundles with eggs and sperm sacks.…”

Section: Acropora and Reticulate Evolutionmentioning

confidence: 99%

Short review: molecular phylogenetic analyses of reef corals

Fukami

2008

Galaxea, Journal of Coral Reef Studies

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In the past two decades, evolutionary studies of reef corals have greatly advanced owing to the intriguing characteristics of corals, such as hybridization and synchronous mass spawning, and development of molecular techniques. These evolutionary works have mainly focused on the genus Acropora because of its dominance. It has the highest number of species and is a major member of the mass spawning event, which characteristics suggest its unusual evolutionary process called "reticulate evolution." Although studies using other corals have been very limited, some have demonstrated obscure species boundaries between closely related species, implying hybridization in the present or past. Most of these studies used genetic analysis, because it is very useful for investigation of species and population relationships among and within regions and to infer phylogenetic relationships from the species level to higher taxonomic levels. For anyone wishing to study the evolution and taxonomy of corals, familiarity with these molecular works, even for nongenetic analysts, is essential. This review summarizes the evolutionary studies of reef corals using molecular analyses.Keywords Acropora, Montastraea, Faviidae, Mitochondria, reticulate evolution IntroductionThe discovery of synchronous mass spawning in scleractinian corals (Harrison et al. 1984, Babcock et al. 1986) triggered the evolutionary study of reef corals (hereinafter "coral (s)" means the zooxanthellate scleractinian corals or reef corals), especially with regard to hybridization. In addition, genetic analysis of corals rendered these evolutionary studies highly advanced over the past two decades. During this period, two hypotheses were proposed, which strongly infl uenced coral scientists.(1) Hypothesis of reticulate evolution of coral proposed by Veron (1995), according to which corals repeat speciation and hybridization in an evolutionary time scale. (2) The hypothesis of Palumbi (1996, 1997) based on the molecular-based phylogeny of the suborders of the scleractinian corals using the mitochondrial (mt) 16s ribosomal DNA (rDNA), in which the scleractinian corals are separated into two major clades-Robust and Complex-and is called the two-clade hypothesis (Chen et al. 2002).In studies that support the reticulate evolution hypothesis, genetic analysis and the genus Acropora played an important role. In fact, the most genetically analyzed corals were the Acropora species (e.g., Hatta et al. 1999; Márquez et al. 2002;

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“…Throughout the Indo-West Pacific, Acroporidae (Scleractinia: Astrocoeniidae) is a major framework builder of shallow-water coral reef communities (Done, 1982;Veron and Wallace, 1984;Wallace and Willis, 1994), and members of this family play ecologically, geographically, and geologically important roles in tropic and subtropic coral reefs. Isopora palifera which belongs to Acroporidae, the model species used in this study, is the type species of genus Isopora (Wallace et al, 2007). Fossil I. palifera corals were dominant in the interval corresponding to the Last Glacial Maximum in a drill core from the Great Barrier Reef obtained by the Integrated Ocean Drilling Program Expedition 325 Yokoyama et al, 2011), and this species is recognized as a key species of Holocene reefs in the northwest Pacific (Hongo and Kayanne, 2011;Hongo, 2012).…”

Section: Introductionmentioning

confidence: 99%

Skeletal isotopic responses of the Scleractinian coral Isopora palifera to experimentally controlled water temperatures

et al. 2014

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We cultivated Isopora palifera clone colonies at six different temperatures for testing the utility of its skeletal δ 18 O as a paleotemperature proxy. Specimens cultivated at higher temperatures exhibited lower calcification rates, especially at 31.0°C, than those cultured at lower temperatures. The skeletal δ 18 O of the specimens cultured at 21.1-29.5°C correlated strongly with water temperature, and δ 18 O-temperature sensitivity was -0.15‰ °C -1 . When we removed the thermal factor from the skeletal δ 18 O and δ 13 C trends at 21.1-29.5°C by subtracting the estimated equilibrium values of inorganic aragonite from the analyzed δ 18 O and δ 13 C values, we found that the calcification rate variation has little influence on the isotopic compositions of the specimens examined. Thus, the skeletal δ 18 O of I. palifera corals without severe bleaching can be a good temperature proxy at temperatures below ~30°C.

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Recognition of separate genera within Acropora based on new morphological, reproductive and genetic evidence from Acropora togianensis, and elevation of the subgenus Isopora Studer, 1878 to genus (Scleractinia: Astrocoeniidae; Acroporidae)

Cited by 76 publications

References 14 publications

The New Systematics of Scleractinia: Integrating Molecular and Morphological Evidence

The New Systematics of Scleractinia: Integrating Molecular and Morphological Evidence

Short review: molecular phylogenetic analyses of reef corals

Skeletal isotopic responses of the Scleractinian coral Isopora palifera to experimentally controlled water temperatures

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