Phylogenetic relationships of the Pomacanthidae (Pisces: Teleostei) inferred from allozyme variation

Chung, K. C.; Woo, Norman Y.S.

doi:10.1111/j.1469-7998.1998.tb00150.x

Cited by 17 publications

(6 citation statements)

References 28 publications

(24 reference statements)

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“…Nevertheless, faced to species diversity of the genus Centropyge, high genetic diversity (Chung & Woo, 1998) and the scarcity of cytogenetical information, it seems inappropriate to assume that conserved chromosomal features are characteristic for this Pomacanthidae group.…”

Section: Introductionmentioning

confidence: 99%

Chromosomal diversification of reef fishes from genus Centropyge(Perciformes, Pomacanthidae)

Affonso

Galetti

2005

Genetica

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The genus Centropyge is remarkable for species richness, composing a highly specialized fish group amongst members from family Pomacanthidae. However, cytogenetical reports are nearly absent in these animals. New data are provided from karyotypical studies carried out on Centropyge aurantonotus from the Brazilian coast of the Atlantic Ocean and C. ferrugatus from the Philippines Sea of the Indo-Pacific Ocean. Both species present 2n = 48 but karyotypes are differentiated by fundamental number. C. aurantonotus has a great number of biarmed chromosomes (4 m + 14 sm + 16 st + 4 a), while C. ferrugatus presents only acrocentric chromosomes. Single nucleolar organizer regions (NORs) are located at interstitial position of an acrocentric pair in C. ferrugatus and on short arms of a subtelocentric pair in C. aurantonotus, as confirmed by fluorescent in situ hybridization (FISH) with 18S rDNA probes. Heterochromatin is distributed over NOR and centromeric regions in both species, but additional GC-rich heterochromatic blocks on short arms of up to eight chromosomal pairs can be detected in C. aurantonotus. 5S rDNA segments were located interstitially on two chromosomal pairs in C. ferrugatus and on nine pairs in C. aurantonotus, mostly equivalent to heterochromatic blocks on short arms of biarmed chromosomes. C. ferrugatus can be considered a species in which basal chromosomal features proposed for modern Teleosteans were conserved. The derived karyotype pattern of C. aurantonotus seems to be determined by pericentric inversions and heterochromatin addition which probably determined the notorious dispersion of 5S rRNA (pseudo)genes. It is demonstrated that, even within a group generally characterized by cytogenetical homogeneity as the family Pomacanthidae, diversified karyotypes can be found.

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Section: Introductionmentioning

confidence: 99%

Chromosomal diversification of reef fishes from genus Centropyge(Perciformes, Pomacanthidae)

Affonso

Galetti

2005

Genetica

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“…On the other hand, karyotypes with 2n = 48 chromosomes had variably sized NOR-bearing chromosomes. In addition, the phylogenetic relationships suggested by Chung & Woo (1998) support the occurrence of a single event. Chung & Woo (1998) reported phylogenetic relationships of Pomacanthidae, which they had inferred from allozyme variation; they analyzed all the species that were examined in this study.…”

Section: Discussionmentioning

confidence: 64%

“…In addition, the phylogenetic relationships suggested by Chung & Woo (1998) support the occurrence of a single event. Chung & Woo (1998) reported phylogenetic relationships of Pomacanthidae, which they had inferred from allozyme variation; they analyzed all the species that were examined in this study. Therefore, based on this phylogenetic relationship, we can discuss a more detailed scenario for chromosomal evolution in Centropyge.…”

Section: Discussionmentioning

confidence: 64%

Diversified chromosomal characteristics in Centropyge fishes (Pomacanthidae, Perciformes)

Takai

Izutsu

2007

Hydrobiologia

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We studied karyotypes and other chromosomal markers such as C-banded heterochromatin and Ag-stained nucleolus organizer regions (Ag-NORs), in seven Centropyge fishes (Pomacanthidae, Perciformes). These results revealed diversified chromosomal characteristics in Centropyge species. Three species had 2n = 48 chromosomes, whereas four species had 2n = 52 chromosomes. Fundamental numbers showed a large variation from 48 to 82, particularly in the species with 2n = 52 chromosomes. In all the species, Ag-NORs were located in a single chromosome pair and C-bands were mainly distributed in the centromeric regions of most chromosomes, as commonly seen in teleostean fishes. However, these chromosomal markers showed species-specific variations and provided us with useful information that could help us in understanding chromosomal evolution. On the basis of these chromosomal characteristics, we infer the process of chromosomal evolution, which according to us involves an increase in chromosome number from 2n = 48 to 2n = 52 through centric fission or other mechanisms, and in fundamental number through pericentric inversion. In particular, karyotypic evolution involving the increase in chromosome number is an unusual event in the evolution of higher teleostean groups.

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“…We follow the taxonomy of [32], who rejected the subgenus Pomacanthus [Pomacanthodes] , leading us to provisionally adopt suggestions from [35] regarding the sub-generic classification of Pomacanthus (for alternative views, see [36]). The species Paracentropyge multifasciata was too shy for video filming, and Pomacanthus imperator , the sole GBR representative of Pomacanthus [Acanthochaetodon] Bleeker 1876 could not be obtained live for filming.…”

Section: Methodsmentioning

confidence: 99%

Evolution of High Trophic Diversity Based on Limited Functional Disparity in the Feeding Apparatus of Marine Angelfishes (f. Pomacanthidae)

Konow

Bellwood

2011

PLoS ONE

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The use of biting to obtain food items attached to the substratum is an ecologically widespread and important mode of feeding among aquatic vertebrates, which rarely has been studied. We did the first evolutionary analyses of morphology and motion kinematics of the feeding apparatus in Indo-Pacific members of an iconic family of biters, the marine angelfishes (f. Pomacanthidae). We found clear interspecific differences in gut morphology that clearly reflected a wide range of trophic niches. In contrast, feeding apparatus morphology appeared to be conserved. A few unusual structural innovations enabled angelfishes to protrude their jaws, close them in the protruded state, and tear food items from the substratum at a high velocity. Only one clade, the speciose pygmy angelfishes, showed functional departure from the generalized and clade-defining grab-and-tearing feeding pattern. By comparing the feeding kinematics of angelfishes with wrasses and parrotfishes (f. Labridae) we showed that grab-and-tearing is based on low kinematics disparity. Regardless of its restricted disparity, the grab-and-tearing feeding apparatus has enabled angelfishes to negotiate ecological thresholds: Given their widely different body sizes, angelfishes can access many structurally complex benthic surfaces that other biters likely are unable to exploit. From these surfaces, angelfishes can dislodge sturdy food items from their tough attachments. Angelfishes thus provide an intriguing example of a successful group that appears to have evolved considerable trophic diversity based on an unusual yet conserved feeding apparatus configuration that is characterized by limited functional disparity.

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Phylogenetic relationships of the Pomacanthidae (Pisces: Teleostei) inferred from allozyme variation

Cited by 17 publications

References 28 publications

Chromosomal diversification of reef fishes from genus Centropyge(Perciformes, Pomacanthidae)

Chromosomal diversification of reef fishes from genus Centropyge(Perciformes, Pomacanthidae)

Diversified chromosomal characteristics in Centropyge fishes (Pomacanthidae, Perciformes)

Evolution of High Trophic Diversity Based on Limited Functional Disparity in the Feeding Apparatus of Marine Angelfishes (f. Pomacanthidae)

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