Stepwise Faunal Change during Evolutionary Turnover: A Case Study from the Neogene of Curacao, Netherlands Antilles

Budd, Ann F.; Petersen, Rebecca A.; McNeill, Donald F.

doi:10.2307/3515488

Cited by 45 publications

(55 citation statements)

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“…The third modern species, M. annularis, does not appear unambiguously in the fossil record until about 500 thousand years ago in Barbados, and is more closely related to M. franksi than to M. faveolata (Pandolfi et al 2002). Earlier, there are M. annularis-like forms in Panama dated at 1.8-2.2 MYA, in Jamaica dated at 1.4-2 MYA, and in Curaçao dated at 2-2.6 MYA (Budd et al 1998;Budd and Klaus 2001). The relative recency of these divergences, especially that between M. annularis and M. franksi, undoubtedly contributes to the difficulties associated with resolving their species status.…”

Section: The Montastraea Annularis Complex In Time and Spacementioning

confidence: 99%

Geographic Differences in Species Boundaries Among Members of the Montastraea Annularis Complex Based on Molecular and Morphological Markers

et al. 2004

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Abstract. The three members of the Montastraea annularis complex (M. annularis, M. franksi, and M. faveolata) are dominant reef builders in the western Atlantic whose species status has been controversial for over a decade. Although differences in colony morphology and reproductive characteristics exist, interspecific fertilizations are possible in the laboratory and genetic differentiation is slight. Here we compare the three taxa genetically and morphologically in Panama and the Bahamas, widely separated locations spanning most of their geographic ranges. In Panama, analyses of three AFLP loci, a noncoding region of the mitochondrial genome, and ITS sequences reveal that M. faveolata is strongly differentiated genetically. Discriminant function analysis also indicates no overlap with the other two species in the fine structure of the corallites that comprise the colony. Genetic analyses of larvae from interspecific crosses between M. faveolata and the other two taxa confirmed the hybrid status of the larvae, but no examples of the most probable F 1 genotype were observed in the field. Although M. annularis and M. franksi were more similar, they also exhibited strong frequency differences at two AFLP loci and in the mitochondrial noncoding region, as well as distinct corallite structure. In the Bahamas, in contrast, the three taxa exhibited overlapping morphologies. Montastraea franksi and M. annularis were indistinguishable genetically, and M. faveolata was distinct at fewer genetic loci. Once again, however, the most probable F 1 genotype involving M. faveolata was not observed. Geographic differences between Panama and the Bahamas explain why past studies have come to different conclusions concerning the status of the three species. In general, the genetic and morphological data suggest a north to south hybridization gradient, with evidence for introgression strongest in the north. However, reproductive data show no such trend, with intrinsic barriers to gene flow comparable or stronger in the north. Reef-building corals create the most diverse marine habitats on the planet. Despite their ecological importance, the nature of coral species is far from settled, particularly with regard to the possibility of reticulate evolution (e.g., Knowlton et al. 1992Knowlton et al. , 1997van Veghel and Bak 1993;Wallace and Willis 1994;Veron 1995;Kenyon 1997;Szmant et al. 1997;Hatta et al. 1999;Lopez et al. 1999;van Oppen et al. 2000van Oppen et al. , 2001van Oppen et al. , 2002Diekmann et al. 2001;Marquez et al. 2002aMarquez et al. , 2002bVollmer and Palumbi 2002;Miller and van Oppen 2003). Widespread reticulate evolution is generally accepted for plants but appears to be more limited in animals (Arnold 1997;Dowling and Secor 1997); thus corals represent an important model in this regard.The Montastraea annularis complex lies at the heart of this debate. Its three putative species (M. annularis, M. faveolata, and M. franksi) are ecologically dominant, broadly sympatric, and often in close proximity on many tropical wester...

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Section: The Montastraea Annularis Complex In Time and Spacementioning

confidence: 99%

Geographic Differences in Species Boundaries Among Members of the Montastraea Annularis Complex Based on Molecular and Morphological Markers

et al. 2004

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“…Late Oligocene coral framework is dominated by heavily calcified and massive coral colonies (8) (22) EP (27) LM (16) LO (28) LP (20) PP (20) MM ( porous, frond-shaped Acropora species that grow an order of magnitude faster than any other corals (33). Acropora gradually increased in abundance during the Pliocene as slower-growing Stylophora and Pocillopora species became extinct (22,34,35). The rise of Acropora is correlated with, and perhaps caused by, great differences in rates of sea-level fluctuations between the Late Oligocene and Quaternary (36).…”

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Caribbean Reef Development Was Independent of Coral Diversity over 28 Million Years

Johnson

Jackson

Budd

2008

Science

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111

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The relationship between natural variations in coral species diversity, reef development, and ecosystem function on coral reefs is poorly understood. Recent coral diversity varies 10-fold among geographic regions, but rates of reef growth are broadly similar, suggesting that diversity is unimportant for reef development. Differences in diversity may reflect regional differences in long-term biotic history in addition to environmental conditions. Using a combination of new and published fossil and stratigraphic data, we compared changes in coral diversity and reef development within the tropical western Atlantic over the past 28 million years. Reef development was unrelated to coral diversity, and the largest reef tracts formed after extinction had reduced diversity by 50%. High diversity is thus not essential for the growth and persistence of coral reefs.

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“…Two of the three modern species (M. franksi, M. faveolata) first appear in the fossil record in Costa Rica in deposits dated at 2.9-3.5 MYA, and are morphologically distinct throughout this period (Budd and Klaus 2001). There are also questionable occurrences in Curaçao at localities dated at 5.6-3 MYA (Budd et al 1998). Two to three undescribed fossil species were closely related to each of these two modern species, suggesting that the modern species are survivors of previously more diverse clades.…”

Section: The Montastraea Annularis Complex In Time and Spacementioning

confidence: 99%

“…The third modern species, M. annularis, does not appear unambiguously in the fossil record until about 500 thousand years ago in Barbados, and is more closely related to M. franksi than to M. faveolata (Pandolfi et al 2002). Earlier, there are M. annularis-Wke forms in Panama dated at 1.8-2.2 MYA, in Jamaica dated at 1.4-2 MYA, and in Curaçao dated at 2-2.6 MYA (Budd et al 1998;Budd and Klaus 2001). The relative recency of these divergences, especially that between M. annularis and M.franksi, undoubtedly contributes to the difficulties associated with resolving their species status.…”

Section: The Montastraea Annularis Complex In Time and Spacementioning

confidence: 99%

Geographic Differences in Species Boundaries Among Members of the Montastraea Annularis Complex Based on Molecular and Morphological Markers

Fukami

Budd

Levitan

et al. 2004

Evol

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Abstract.•The three members of the Montastraea annularis complex (M. annularis, M. franksi, and M. faveolata) are dominant reef builders in the western Atlantic whose species status has been controversial for over a decade. Although differences in colony morphology and reproductive characteristics exist, interspecific fertilizations are possible in the laboratory and genetic differentiation is slight. Here we compare the three taxa genetically and morphologically in Panama and the Bahamas, widely separated locations spanning most of their geographic ranges. In Panama, analyses of three AFLP loci, a noncoding region of the mitochondrial genome, and ITS sequences reveal that M. faveolata is strongly differentiated genetically. Discriminant function analysis also indicates no overlap with the other two species in the fine structure of the corallites that comprise the colony. Genetic analyses of larvae from interspecific crosses between M. faveolata and the other two taxa confirmed the hybrid status of the larvae, but no examples of the most probable Fi genotype were observed in the field. Although M. annularis and M. franksi were more similar, they also exhibited strong frequency differences at two AFLP loci and in the mitochondrial noncoding region, as well as distinct corallite structure. In the Bahamas, in contrast, the three taxa exhibited overlapping morphologies. Montastraea franksi and M. annularis were indistinguishable genetically, and M. faveolata was distinct at fewer genetic loci. Once again, however, the most probable Fi genotype involving M. faveolata was not observed. Geographic differences between Panama and the Bahamas explain why past studies have come to different conclusions concerning the status of the three species. In general, the genetic and morphological data suggest a north to south hybridization gradient, with evidence for introgression strongest in the north. However, reproductive data show no such trend, with intrinsic barriers to gene flow comparable or stronger in the north. However, it has proved difficult to find genetic differences accepted for plants but appears to be more limited in animals among these taxa using DNA sequence data. For example, (Arnold 1997; Dowling and Secor 1997); thus corals repre-analyses of the ITS regions of rDNA, an intron in the Bsent an important model in this regard.tubulin gene, and mitochondrial COI sequences showed no The Montastraea annularis complex lies at the heart of this fixed DNA sequence differences among them (Lopez and debate. Its three putative species (M. annularis, M. faveolata, Knowlton 1997;Medina et al. 1999). More recently, however, and M. franksi) are ecologically dominant, broadly sympatric, one amplified fragment length polymorphism (AFLP) locus and often in close proximity on many tropical western At-was identified that distinguished M. faveolata from the other lantic reefs. For many years, it was thought that these three two taxa (Lopez et al. 1999), and sequence analysis confirmed morphotypes represented intraspecific variation...

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Stepwise Faunal Change during Evolutionary Turnover: A Case Study from the Neogene of Curacao, Netherlands Antilles

Cited by 45 publications

References 24 publications

Geographic Differences in Species Boundaries Among Members of the Montastraea Annularis Complex Based on Molecular and Morphological Markers

Geographic Differences in Species Boundaries Among Members of the Montastraea Annularis Complex Based on Molecular and Morphological Markers

Caribbean Reef Development Was Independent of Coral Diversity over 28 Million Years

Geographic Differences in Species Boundaries Among Members of the Montastraea Annularis Complex Based on Molecular and Morphological Markers

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