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Omar Dominguezdominguez - One of the best experts on this subject based on the ideXlab platform.
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diversification of the genus apogon lacepede 1801 Apogonidae perciformes in the tropical eastern pacific
Molecular Phylogenetics and Evolution, 2019Co-Authors: Victor Julio Pineros, Rosa Gabriela Beltranlopez, Enrique Barraza, Eduardo Espinoza, Juan Esteban Martinez, Omar Dominguezdominguez, Carole C BaldwinAbstract:Abstract We examined the role of geographic barriers and historical processes on the diversification of Apogon species within the tropical eastern Pacific (TEP). Mitochondrial and nuclear DNA sequences were used in Bayesian and Maximum likelihood analyses to generate a phylogenetic hypothesis for Apogon species. Bayesian inferences were used to date the cladogenetic events. Analyses with BioGeoBEARS were conducted to reconstruct the biogeographic history and ancestral ranges. The phylogenetic results show a monophyletic clade of TEP Apogon species with A. imberbis from the eastern Atlantic as sister species. The two lineages diverged during the Miocene. Within the TEP clade, two subclades diverged at around 11.1 million years ago (Mya): one clusters the coastal continental species (A. pacificus, A. retrosella and A. dovii), and the second clusters the oceanic island species (A. atradorsatus, A. atricaudus and A. guadalupensis). The estimated diversification times of these subclades were 9.8 and 7.1 Mya, respectively. Within each subclade, species divergences occurred during the Pliocene-Pleistocene epochs. The divergent event between the Atlantic A. imberbis and Apogon TEP clade corresponds to the first closure event of the Central American Seaway. The biogeographic history of Apogon within the TEP appears to be the result of vicariant, dispersal and founder events that occurred during the last 11 million years. The vicariant and dispersal events occurred along the mainland and were associated with the origin of the Central American Gap. The founder events could have allowed the invasion of Apogon to TEP island areas and could have been driven by ancient warming oceanic waters, changes in circulation of marine currents, and the presence of seamounts in ancient marine ridges that allowed the settlement of marine biota. These factors may have allowed Apogon lineages to cross the TEP biogeographic barriers at different times, with subsequent genetic isolation.
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diversification of the genus apogon lacepede 1801 Apogonidae perciformes in the tropical eastern pacific
Molecular Phylogenetics and Evolution, 2019Co-Authors: Victor Julio Pineros, Rosa Gabriela Beltranlopez, Enrique Barraza, Eduardo Espinoza, Juan Esteban Martinez, Omar Dominguezdominguez, Carole C BaldwinAbstract:Abstract We examined the role of geographic barriers and historical processes on the diversification of Apogon species within the tropical eastern Pacific (TEP). Mitochondrial and nuclear DNA sequences were used in Bayesian and Maximum likelihood analyses to generate a phylogenetic hypothesis for Apogon species. Bayesian inferences were used to date the cladogenetic events. Analyses with BioGeoBEARS were conducted to reconstruct the biogeographic history and ancestral ranges. The phylogenetic results show a monophyletic clade of TEP Apogon species with A. imberbis from the eastern Atlantic as sister species. The two lineages diverged during the Miocene. Within the TEP clade, two subclades diverged at around 11.1 million years ago (Mya): one clusters the coastal continental species (A. pacificus, A. retrosella and A. dovii), and the second clusters the oceanic island species (A. atradorsatus, A. atricaudus and A. guadalupensis). The estimated diversification times of these subclades were 9.8 and 7.1 Mya, respectively. Within each subclade, species divergences occurred during the Pliocene-Pleistocene epochs. The divergent event between the Atlantic A. imberbis and Apogon TEP clade corresponds to the first closure event of the Central American Seaway. The biogeographic history of Apogon within the TEP appears to be the result of vicariant, dispersal and founder events that occurred during the last 11 million years. The vicariant and dispersal events occurred along the mainland and were associated with the origin of the Central American Gap. The founder events could have allowed the invasion of Apogon to TEP island areas and could have been driven by ancient warming oceanic waters, changes in circulation of marine currents, and the presence of seamounts in ancient marine ridges that allowed the settlement of marine biota. These factors may have allowed Apogon lineages to cross the TEP biogeographic barriers at different times, with subsequent genetic isolation.
Rosa Gabriela Beltranlopez - One of the best experts on this subject based on the ideXlab platform.
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diversification of the genus apogon lacepede 1801 Apogonidae perciformes in the tropical eastern pacific
Molecular Phylogenetics and Evolution, 2019Co-Authors: Victor Julio Pineros, Rosa Gabriela Beltranlopez, Enrique Barraza, Eduardo Espinoza, Juan Esteban Martinez, Omar Dominguezdominguez, Carole C BaldwinAbstract:Abstract We examined the role of geographic barriers and historical processes on the diversification of Apogon species within the tropical eastern Pacific (TEP). Mitochondrial and nuclear DNA sequences were used in Bayesian and Maximum likelihood analyses to generate a phylogenetic hypothesis for Apogon species. Bayesian inferences were used to date the cladogenetic events. Analyses with BioGeoBEARS were conducted to reconstruct the biogeographic history and ancestral ranges. The phylogenetic results show a monophyletic clade of TEP Apogon species with A. imberbis from the eastern Atlantic as sister species. The two lineages diverged during the Miocene. Within the TEP clade, two subclades diverged at around 11.1 million years ago (Mya): one clusters the coastal continental species (A. pacificus, A. retrosella and A. dovii), and the second clusters the oceanic island species (A. atradorsatus, A. atricaudus and A. guadalupensis). The estimated diversification times of these subclades were 9.8 and 7.1 Mya, respectively. Within each subclade, species divergences occurred during the Pliocene-Pleistocene epochs. The divergent event between the Atlantic A. imberbis and Apogon TEP clade corresponds to the first closure event of the Central American Seaway. The biogeographic history of Apogon within the TEP appears to be the result of vicariant, dispersal and founder events that occurred during the last 11 million years. The vicariant and dispersal events occurred along the mainland and were associated with the origin of the Central American Gap. The founder events could have allowed the invasion of Apogon to TEP island areas and could have been driven by ancient warming oceanic waters, changes in circulation of marine currents, and the presence of seamounts in ancient marine ridges that allowed the settlement of marine biota. These factors may have allowed Apogon lineages to cross the TEP biogeographic barriers at different times, with subsequent genetic isolation.
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diversification of the genus apogon lacepede 1801 Apogonidae perciformes in the tropical eastern pacific
Molecular Phylogenetics and Evolution, 2019Co-Authors: Victor Julio Pineros, Rosa Gabriela Beltranlopez, Enrique Barraza, Eduardo Espinoza, Juan Esteban Martinez, Omar Dominguezdominguez, Carole C BaldwinAbstract:Abstract We examined the role of geographic barriers and historical processes on the diversification of Apogon species within the tropical eastern Pacific (TEP). Mitochondrial and nuclear DNA sequences were used in Bayesian and Maximum likelihood analyses to generate a phylogenetic hypothesis for Apogon species. Bayesian inferences were used to date the cladogenetic events. Analyses with BioGeoBEARS were conducted to reconstruct the biogeographic history and ancestral ranges. The phylogenetic results show a monophyletic clade of TEP Apogon species with A. imberbis from the eastern Atlantic as sister species. The two lineages diverged during the Miocene. Within the TEP clade, two subclades diverged at around 11.1 million years ago (Mya): one clusters the coastal continental species (A. pacificus, A. retrosella and A. dovii), and the second clusters the oceanic island species (A. atradorsatus, A. atricaudus and A. guadalupensis). The estimated diversification times of these subclades were 9.8 and 7.1 Mya, respectively. Within each subclade, species divergences occurred during the Pliocene-Pleistocene epochs. The divergent event between the Atlantic A. imberbis and Apogon TEP clade corresponds to the first closure event of the Central American Seaway. The biogeographic history of Apogon within the TEP appears to be the result of vicariant, dispersal and founder events that occurred during the last 11 million years. The vicariant and dispersal events occurred along the mainland and were associated with the origin of the Central American Gap. The founder events could have allowed the invasion of Apogon to TEP island areas and could have been driven by ancient warming oceanic waters, changes in circulation of marine currents, and the presence of seamounts in ancient marine ridges that allowed the settlement of marine biota. These factors may have allowed Apogon lineages to cross the TEP biogeographic barriers at different times, with subsequent genetic isolation.
Ofer Gon - One of the best experts on this subject based on the ideXlab platform.
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redescription and distributional range extension of the speckled siphonfish siphamia guttulata pisces Apogonidae
Zootaxa, 2020Co-Authors: John J Pogonoski, Ofer Gon, S A AppleyardAbstract:During seabed biodiversity surveys between 2003 and 2005 from the Torres Strait (Papua New Guinea) to the southern Great Barrier Reef (Queensland), hundreds of Siphamia specimens were collected. After Gon Allen's (2012) revision allowed greater interrogation of the Siphamia species present, a re-examination of preserved and frozen Siphamia specimens at the CSIRO Australian National Fish Collection (ANFC) was warranted. The material was re-identified as four commonly collected species (S. cuneiceps, S. roseigaster, S. tubifer, and S. tubulata) and a fifth unidentified species that appeared to key to S. guttulata, previously known only from the type locality. Further detailed investigations including an analysis of meristic, morphometric and COI barcoding data confirmed the identity of S. guttulata from almost the entire length of the Great Barrier Reef, Queensland, from the Torres Strait in the north to the Northumberland Islands Group in the south. This study provides a redescription of Siphamia guttulata and highlights the importance of re-assessing the taxonomic status of museum material after revisionary studies.
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scale ontogeny in the cardinalfish family Apogonidae
Zootaxa, 2016Co-Authors: Ofer GonAbstract:Following the discovery of spinoid scales in species of the cardinalfish genus Siphamia , a survey of 20 apogonid genera, using scanning electron microscopy, found that scale ontogeny in the Apogonidae usually proceeds along three phases, cycloid, spinoid and transforming ctenoid, that develop in that order. The transforming ctenoid scales of the Pempheridae, considered a sister group of the Apgogonidae by some authors, follow the same ontogenetic pattern. Transforming ctenoid scales are the ancestral scale type in the Apogonidae, making their spinoid and cycloid scales a secondary loss or reversal. Though sharing the transforming ctenoid scale type with the apogonids, the ontogeny of this scale type in several scorpionfishes (Scorpaenidae) does not have a spinoid phase. Recent molecular studies indicate that gobiids are related to apogonids, but the goby species examined in this study have peripheral ctenoid scales that lacked a spinoid phase in their ontogeny. The observations made in this study suggest that the peripheral ctenoid scale, the whole ctenoid scale and the crenate scale found in percomorph fishes were derived from a transforming ctenoid scale. Scale morphology and ontogeny could provide useful characters for resolving relationships between percomorph families.
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a new species of the cardinalfish genus jaydia teleostei Apogonidae from the philippines
Zootaxa, 2015Co-Authors: Ofer Gon, Yunchih Liao, Shao KwangtsaoAbstract:Jaydia erythrophthalma n. sp. is described from specimens collected during two recent biodiversity surveys along the east and west coasts of Luzon, Philippines. It is characterized by a first dorsal fin with eight spines, serrated posterior and crenulated ventral preopercular edges, reddish orange iris and two series of brown spots tinged in orange on the upper part of the body.
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a new species of the cardinalfish genus siphamia perciformes Apogonidae from west papua indonesia
Zootaxa, 2014Co-Authors: Ofer Gon, Gerald R Allen, Mark V Erdmann, Gavin GouwsAbstract:A new species of the cardinalfish genus Siphamia is described from specimens collected in the Province of West Papua, Indonesia, at depths of 50–72 m. Siphamia papuensis n. sp. has a striated light organ which makes it a member of the S. tubifer species group. Within this group it is closely related to S. argentea , sharing with the latter 13 pectoral-fin rays, 9 developed gill rakers and an irregular pattern of yellowish green bars on the body. It differs from S. argentea in having an incomplete lateral line and in lacking dark marks on the head, and at the origin and end of the dorsal-fin and anal-fin bases, as well as the absence of red spots along the light organ and along the back. Japanese records of S. tubulata are reidentified as S. argentea , and new locality records for S. argentea and S. stenotes are reported. Analysis of sequence data from a 16S rDNA fragment revealed the clear separation of S. papuensis n. sp., S. argentea and other included Siphamia species ( S. jebbi , S. tubifer and S. stenotes ).
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isolation and characterization of polymorphic microsatellite loci for siphamia tubifer weber perciformes Apogonidae
Conservation Genetics Resources, 2014Co-Authors: Tilman J Alpermann, Ofer Gon, Jorg Plieske, Ahmad O Mal, Michael L. BerumenAbstract:The cardinalfish Siphamia tubifer has been selected as a model for the study of genetic connectivity in reef-associated fishes among marine-protected-areas in Socotra Island in the northwestern Indian Ocean (part of the Socotra Archipelago, a UNESCO World Heritage Site since 2008). Twenty-six novel microsatellite markers are described for S. tubifer and are now available for studies on its genetic population structure. In a population sample from Socotra Island, the newly developed markers possessed between three and 20 alleles. Expected and observed heterozygosity ranged from 0.56–0.96 to 0.55–0.95, respectively. The markers did not show deviations from Hardy–Weinberg equilibrium and were not in linkage disequilibrium.
Carole C Baldwin - One of the best experts on this subject based on the ideXlab platform.
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diversification of the genus apogon lacepede 1801 Apogonidae perciformes in the tropical eastern pacific
Molecular Phylogenetics and Evolution, 2019Co-Authors: Victor Julio Pineros, Rosa Gabriela Beltranlopez, Enrique Barraza, Eduardo Espinoza, Juan Esteban Martinez, Omar Dominguezdominguez, Carole C BaldwinAbstract:Abstract We examined the role of geographic barriers and historical processes on the diversification of Apogon species within the tropical eastern Pacific (TEP). Mitochondrial and nuclear DNA sequences were used in Bayesian and Maximum likelihood analyses to generate a phylogenetic hypothesis for Apogon species. Bayesian inferences were used to date the cladogenetic events. Analyses with BioGeoBEARS were conducted to reconstruct the biogeographic history and ancestral ranges. The phylogenetic results show a monophyletic clade of TEP Apogon species with A. imberbis from the eastern Atlantic as sister species. The two lineages diverged during the Miocene. Within the TEP clade, two subclades diverged at around 11.1 million years ago (Mya): one clusters the coastal continental species (A. pacificus, A. retrosella and A. dovii), and the second clusters the oceanic island species (A. atradorsatus, A. atricaudus and A. guadalupensis). The estimated diversification times of these subclades were 9.8 and 7.1 Mya, respectively. Within each subclade, species divergences occurred during the Pliocene-Pleistocene epochs. The divergent event between the Atlantic A. imberbis and Apogon TEP clade corresponds to the first closure event of the Central American Seaway. The biogeographic history of Apogon within the TEP appears to be the result of vicariant, dispersal and founder events that occurred during the last 11 million years. The vicariant and dispersal events occurred along the mainland and were associated with the origin of the Central American Gap. The founder events could have allowed the invasion of Apogon to TEP island areas and could have been driven by ancient warming oceanic waters, changes in circulation of marine currents, and the presence of seamounts in ancient marine ridges that allowed the settlement of marine biota. These factors may have allowed Apogon lineages to cross the TEP biogeographic barriers at different times, with subsequent genetic isolation.
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diversification of the genus apogon lacepede 1801 Apogonidae perciformes in the tropical eastern pacific
Molecular Phylogenetics and Evolution, 2019Co-Authors: Victor Julio Pineros, Rosa Gabriela Beltranlopez, Enrique Barraza, Eduardo Espinoza, Juan Esteban Martinez, Omar Dominguezdominguez, Carole C BaldwinAbstract:Abstract We examined the role of geographic barriers and historical processes on the diversification of Apogon species within the tropical eastern Pacific (TEP). Mitochondrial and nuclear DNA sequences were used in Bayesian and Maximum likelihood analyses to generate a phylogenetic hypothesis for Apogon species. Bayesian inferences were used to date the cladogenetic events. Analyses with BioGeoBEARS were conducted to reconstruct the biogeographic history and ancestral ranges. The phylogenetic results show a monophyletic clade of TEP Apogon species with A. imberbis from the eastern Atlantic as sister species. The two lineages diverged during the Miocene. Within the TEP clade, two subclades diverged at around 11.1 million years ago (Mya): one clusters the coastal continental species (A. pacificus, A. retrosella and A. dovii), and the second clusters the oceanic island species (A. atradorsatus, A. atricaudus and A. guadalupensis). The estimated diversification times of these subclades were 9.8 and 7.1 Mya, respectively. Within each subclade, species divergences occurred during the Pliocene-Pleistocene epochs. The divergent event between the Atlantic A. imberbis and Apogon TEP clade corresponds to the first closure event of the Central American Seaway. The biogeographic history of Apogon within the TEP appears to be the result of vicariant, dispersal and founder events that occurred during the last 11 million years. The vicariant and dispersal events occurred along the mainland and were associated with the origin of the Central American Gap. The founder events could have allowed the invasion of Apogon to TEP island areas and could have been driven by ancient warming oceanic waters, changes in circulation of marine currents, and the presence of seamounts in ancient marine ridges that allowed the settlement of marine biota. These factors may have allowed Apogon lineages to cross the TEP biogeographic barriers at different times, with subsequent genetic isolation.
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identification of early life history stages of caribbean apogon perciformes Apogonidae through dna barcoding
Zootaxa, 2011Co-Authors: Carole C Baldwin, Balam J Brito, Lee A. Weigt, David G Smith, Elva EscobarbrionesAbstract:Early life-history stages of 12 of 17 species of western Central Atlantic Apogon were identified using molecular data. A neighbor-joining tree was constructed from mitochondrial cytochrome oxidase-c subunit I (COl) sequences, and genetic lineages of Apogon in the tree were identified to species based on adults in the lineages. Relevant portions of the tree subsequently were used to identify larvae of Apogon species from Carrie Bow Cay, Belize, and juveniles from Belize and other western Central Atlantic localities. Diagnostic morphological characters of larvae and juveniles were investigated by examining preserved vouchers from which the DNA was extracted and digital color photographs of those specimens taken before preservation. Orange and yellow chromatophore patterns are the easiest and sometimes only means of separating Apogon larvae. Patterns of melanophores and morphometric features are of limited diagnostic value. For juveniles, chromatophore patterns and the developing dark blotches characteristic of adults are the most useful diagnostic features. Larvae were identified for Apogon aurolineatus, A. binotatus, A. maculatus, A. mosavi, A. phenax, A. planifrons, and A. townsendi. Juveniles were identified for those species (except A. planifrons) and for A. pseudomaculatus, A. lachneri, A. pillionatus, A. robbyi, and A. quadrisquamatus. One larval specimen occurs in an unidentified genetic lineage, and five adults occur in another unidentified genetic lineage. Apogon species can be divided into at least four groups based on pigmentation patterns in early life stages. Further investigation is needed to determine if those groups are meaningful in the generic classification of Apogon species.
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identification of early life history stages of caribbean apogon perciformes Apogonidae through dna barcoding
Zootaxa, 2011Co-Authors: Carole C Baldwin, Balam J Brito, Lee A. Weigt, David G Smith, Elva EscobarbrionesAbstract:Early life-history stages of 12 of 17 species of western Central Atlantic Apogon were identified using molecular data. A neighbor-joining tree was constructed from mitochondrial cytochrome oxidase-c subunit I (COl) sequences, and genetic lineages of Apogon in the tree were identified to species based on adults in the lineages. Relevant portions of the tree subsequently were used to identify larvae of Apogon species from Carrie Bow Cay, Belize, and juveniles from Belize and other western Central Atlantic localities. Diagnostic morphological characters of larvae and juveniles were investigated by examining preserved vouchers from which the DNA was extracted and digital color photographs of those specimens taken before preservation. Orange and yellow chromatophore patterns are the easiest and sometimes only means of separating Apogon larvae. Patterns of melanophores and morphometric features are of limited diagnostic value. For juveniles, chromatophore patterns and the developing dark blotches characteristic of adults are the most useful diagnostic features. Larvae were identified for Apogon aurolineatus, A. binotatus, A. maculatus, A. mosavi, A. phenax, A. planifrons, and A. townsendi. Juveniles were identified for those species (except A. planifrons) and for A. pseudomaculatus, A. lachneri, A. pillionatus, A. robbyi, and A. quadrisquamatus. One larval specimen occurs in an unidentified genetic lineage, and five adults occur in another unidentified genetic lineage. Apogon species can be divided into at least four groups based on pigmentation patterns in early life stages. Further investigation is needed to determine if those groups are meaningful in the generic classification of Apogon species.
David R Bellwood - One of the best experts on this subject based on the ideXlab platform.
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Apogonidae
2016Co-Authors: Peter F Cowman, David R BellwoodAbstract:Chronogram of the Family Apogonidae reconstructed using BEAST and compiled using TreeAnnotato
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coral reefs as drivers of cladogenesis expanding coral reefs cryptic extinction events and the development of biodiversity hotspots
Journal of Evolutionary Biology, 2011Co-Authors: Peter F Cowman, David R BellwoodAbstract:Diversification rates within four conspicuous coral reef fish families (Labridae, Chaetodontidae, Pomacentridae and Apogonidae) were estimated using Bayesian inference. Lineage through time plots revealed a possible late Eocene/early Oligocene cryptic extinction event coinciding with the collapse of the ancestral Tethyan/Arabian hotspot. Rates of diversification analysis revealed elevated cladogenesis in all families in the Oligocene/Miocene. Throughout the Miocene, lineages with a high percentage of coral reef–associated taxa display significantly higher net diversification rates than expected. The development of a complex mosaic of reef habitats in the Indo-Australian Archipelago (IAA) during the Oligocene/Miocene appears to have been a significant driver of cladogenesis. Patterns of diversification suggest that coral reefs acted as a refuge from high extinction, as reef taxa are able to sustain diversification at high extinction rates. The IAA appears to support both cladogenesis and survival in associated lineages, laying the foundation for the recent IAA marine biodiversity hotspot.
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Trophic ecomorphology of cardinalfish
Marine Ecology Progress Series, 2006Co-Authors: Adam Barnett, David R Bellwood, Andrew S. HoeyAbstract:Trophic diversity in 9 cardinalfish species was investigated by comparing 14 morphological characteristics of their feeding apparatus with dietary data based on stomach content analysis. Analysis of the morphological characteristics separated the 9 species into 3 distinct groups. The first group (Cheilodipterus macrodon, C. artus and C. quinquelineatus) was characterized by elongated heads; the second group (Archamia fucata, Apogon guamensis, A. cyanosoma and A. fragilis) by large gapes; and the third group (Apogon exostigma, A. doederleini) by wider heads and low transmission coefficient in their jaw mechanics. Stomach samples, however, revealed that morphology was of limited utility in predicting dietary groupings. The majority of species examined displayed generalist diets. The results indicate that while morphology may predict feeding potential, or feeding mode, actual resource use in this group may be shaped primarily by other modifying factors such as behaviour and prey availability. In contrast to other reef fish groups, morphology does not appear to play a strong role in influencing diet in the Apogonidae.
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sexual dimorphism in the buccal cavity of paternal mouthbrooding cardinalfishes pisces Apogonidae
Marine Biology, 2005Co-Authors: Adam Barnett, David R BellwoodAbstract:The mechanical basis of mouthbrooding in the coral reef cardinalfish (family Apogonidae) has yet to be established. Sexual dimorphism in the anatomy of the oral jaws and buccal cavity of seven species of paternal mouthbrooding apogonids was therefore investigated. A novel silicon injecting technique was used to quantify between sexes differences in size and shape of the buccal cavity. Osteological and morphological measurements were also examined to identify the structural features associated with variation in buccal volumes. Males buccal volumes were proportionally larger by 20–42% in five of the seven species (P<0.01), a change that was largely a result of an increase in the depth of buccal cavity. Absence of distinct osteological differences between sexes suggests that changes in the soft anatomy are primarily responsible for the increased buccal volume in males. The average increase of 31% in buccal volume of males appears to reflect their role in mouthbrooding. This is the first study to demonstrate sexual dimorphism of the buccal cavity of multiple mouthbrooding species.