The Experts below are selected from a list of 819 Experts worldwide ranked by ideXlab platform
Tapia-garcía M. - One of the best experts on this subject based on the ideXlab platform.
-
Listado ictiofaunístico de las bahías del Parque Nacional Huatulco, Oaxaca, México
Museu de Ciències Naturals de Barcelona, 2018Co-Authors: Juárez-hernández L. G., Tapia-garcía M.Abstract:Llista ictiofaunística de les badies del Parc Nacional Huatulco, Oaxaca, Mèxic Es va determinar la composició íctica de les badies del Parc Nacional Huatulco amb la tècnica de censos visuals mitjançant 351 transsectes d’una llargada de 10 m portats a terme entre gener de 2009 i desembre de 2010. Es van identificar 89 espècies pertanyents 69 gèneres i 42 famílies. Les famílies Labridae, Pomacentridae i Carangidae van integrar el nombre més gran d’espècies i els gèneres més ben representats van ser Haemulon, Halichoeres i Scarus. Les espècies Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis i Xenichthys xanti representen nous registres per a les badies de Huatulco i s’hi confirma la presència de Chaenomugil proboscideus, Narcine entemedor i Pseudobatos leucorhynchus. La comunitat íctica d’aquestes badies presenta més similituds amb les comunitats íctiques de Panamà i Costa Rica.Dades publicades a GBIF (doi:10.15470/eb4hrm).Se determinó la composición íctica de las bahías del Parque Nacional Huatulco con la técnica de censos visuales mediante 351 transectos de una longitud de 10 m efectuados entre enero de 2009 y diciembre de 2010. Se identificaron 89 especies pertenecientes a 69 géneros y 42 familias. Las familias Labridae, Pomacentridae y Carangidae integraron el mayor número de especies y los géneros mejor representados fueron Haemulon, Halichoeres y Scarus. Las especies Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis y Xenichthys xanti representan nuevos registros para las bahías de Huatulco y se confirma la presencia de Chaenomugil proboscideus, Narcine entemedor y Pseudobatos leucorhynchus en las mismas. La comunidad íctica de dichas bahías presenta mayor similitud con las comunidades ícticas de Panamá y Costa Rica. Datos publicados en GBIF (doi:10.15470/eb4hrm).Ichthyofaunistic checklist of the bays of Huatulco National Park, Oaxaca, Mexico We determined the composition of ichthyofauna of the bays of Huatulco National Park using the the visual census technique for 351 ten-meter-long transects between January 2009 and December 2010. Eighty-nine species belonging to 69 genera and 42 families were identified. The most frequently represented families, according to numbers of species, were Pomacentridae, Labridae and Carangidae, and the most numerous genera were Haemulon, Halichoeres and Scarus. Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis and Xenichthys xanti were recently recorded for the first time in the study area. The presence of Chaenomugil proboscideus, Narcine entemedor and Pseudobatos leucorhynchus in the Huatulco Bays is confirmed. The fish community in the Huatulco Bays was most similar to those in Panama and Costa Rica. Data published through GBIF (doi:10.15470/eb4hrm)
-
→ GBIF: Data paper Listado ictiofaunístico de las bahías del Parque Nacional Huatulco, Oaxaca, México
Museu de Ciències Naturals de Barcelona, 2018Co-Authors: Juárez-hernández L. G., Tapia-garcía M.Abstract:We determined the composition of ichthyofauna of the bays of Huatulco National Park using the the visual census technique for 351 ten-meter-long transects between January 2009 and December 2010. Eighty-nine species belonging to 69 genera and 42 families were identified. The most frequently represented families, according to numbers of species, were Pomacentridae, Labridae and Carangidae, and the most numerous genera were Haemulon, Halichoeres and Scarus. Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis and Xenichthys xanti were recently recorded for the first time in the study area. The presence of Chaenomugil proboscideus, Narcine entemedor and Pseudobatos leucorhynchus in the Huatulco Bays is confirmed. The fish community in the Huatulco Bays was most similar to those in Panama and Costa Rica. Data published through GBIF (doi:10.15470/eb4hrm)
Wagner Franco Molina - One of the best experts on this subject based on the ideXlab platform.
-
interregional cytogenetic comparisons in Halichoeres and thalassoma wrasses labridae of coastal and insular regions of the southwestern atlantic
Genetics and Molecular Research, 2017Co-Authors: Karlla Danielle Jorge Amorim, Rodrigo Xavier Soares, Leonardo Luiz Calado, A T Borges, Gideao Wagner Werneck Felix Da Costa, Marcelo De Bello Cioffi, Luiz Antonio Carlos Bertollo, Wagner Franco MolinaAbstract:: The distribution patterns of marine biodiversity are complex, resulting from vicariant events and species dispersion, as well as local ecological and adaptive conditions. Furthermore, the wide geographic distribution of some species may be hindered by biogeographical barriers that can interfere in the gene flow. Cytogenetic analyses in marine fishes, especially those involving populations in small remote insular environments, remain scarce. In the Western Atlantic, species of wrasses from the genera Halichoeres and Thalassoma occur in biogeographic arrangements that make it possible to analyze cytogenetic patterns between coastal and widely separated island populations. Species of these genera were punctually analyzed in some Atlantic regions. In this study, we compared several chromosomal features, such as karyotype macrostructure, heterochromatic patterns, patterns of base-specific fluorochromes, Ag-NORs, and 18S and 5S ribosomal sites in Thalassoma noronhanum, Halichoeres poeyi, and Halichoeres radiatus individuals from distinct coastal or insular regions of Atlantic. Notably, all of them are characterized by multiple 18S and 5S rDNA sites with syntenic arrangements in some chromosome pairs. Individuals of T. noronhanum (between the insular regions of Rocas Atoll and Fernando de Noronha Archipelago - FNA) and H. poeyi (coastal areas from Northeastern Brazil) show no detectable differences among their cytogenetic patterns. On the other hand, H. radiatus from FNA and Sao Pedro and Sao Paulo Archipelago exhibit differences in the frequency of rDNA sites that could suggest some level of population structuring between these insular regions. Interregional cytogenetic inventories of marine species with wide geographic distribution need to be rapidly expanded. These data will allow a better understanding of the level of chromosomal stability between vast oceanic spaces, which may be less than previously thought.
-
Co-located 18S/5S rDNA arrays: an ancient and unusual chromosomal trait in Julidini species (Labridae, Perciformes).
Comparative cytogenetics, 2016Co-Authors: Karlla Danielle Jorge Amorim, Rodrigo Xavier Soares, Gideao Wagner Werneck Felix Da Costa, Marcelo De Bello Cioffi, Luiz Antonio Carlos Bertollo, Allyson Santos De Souza, Wagner Franco MolinaAbstract:Wrasses (Labridae) are extremely diversified marine fishes, whose species exhibit complex interactions with the reef environment. They are widely distributed in the Indian, Pacific and Atlantic oceans. Their species have displayed a number of karyotypic divergent processes, including chromosomal regions with complex structural organization. Current cytogenetic information for this family is phylogenetically and geographically limited and mainly based on conventional cytogenetic techniques. Here, the distribution patterns of heterochromatin, GC-specific chromosome regions and Ag-NORs, and the organization of 18S and 5S rDNA sites of the Atlantic species Thalassoma noronhanum (Boulenger, 1890), Halichoeres poeyi (Steindachner, 1867), Halichoeres radiatus (Linnaeus, 1758), Halichoeres brasiliensis (Bloch, 1791) and Halichoeres penrosei Starks, 1913, belonging to the tribe Julidini were analyzed. All the species exhibited 2n=48 chromosomes with variation in the number of chromosome arms among genera. Thalassoma noronhanum has 2m+46a, while species of the genus Halichoeres Ruppell, 1835 share karyotypes with 48 acrocentric chromosomes. The Halichoeres species exhibit differences in the heterochromatin distribution patterns and in the number and distribution of 18S and 5S rDNA sites. The occurrence of 18S/5S rDNA syntenic arrangements in all the species indicates a functionally stable and adaptive genomic organization. The phylogenetic sharing of this rDNA organization highlights a marked and unusual chromosomal singularity inside the family Labridae.
-
co located 18s 5s rdna arrays an ancient and unusual chromosomal trait in julidini species labridae perciformes
Comparative Cytogenetics, 2016Co-Authors: Karlla Danielle Jorge Amorim, Rodrigo Xavier Soares, Allyson Santos De Souza, Wagner Franco MolinaAbstract:Wrasses (Labridae) are extremely diversified marine fishes, whose species exhibit complex interactions with the reef environment. They are widely distributed in the Indian, Pacific and Atlantic oceans. Their species have displayed a number of karyotypic divergent processes, including chromosomal regions with complex structural organization. Current cytogenetic information for this family is phylogenetically and geographically limited and mainly based on conventional cytogenetic techniques. Here, the distribution patterns of heterochromatin, GC-specific chromosome regions and Ag-NORs, and the organization of 18S and 5S rDNA sites of the Atlantic species Thalassoma noronhanum (Boulenger, 1890), Halichoeres poeyi (Steindachner, 1867), Halichoeres radiatus (Linnaeus, 1758), Halichoeres brasiliensis (Bloch, 1791) and Halichoeres penrosei Starks, 1913, belonging to the tribe Julidini were analyzed. All the species exhibited 2n=48 chromosomes with variation in the number of chromosome arms among genera. Thalassoma noronhanum has 2m+46a, while species of the genus Halichoeres Ruppell, 1835 share karyotypes with 48 acrocentric chromosomes. The Halichoeres species exhibit differences in the heterochromatin distribution patterns and in the number and distribution of 18S and 5S rDNA sites. The occurrence of 18S/5S rDNA syntenic arrangements in all the species indicates a functionally stable and adaptive genomic organization. The phylogenetic sharing of this rDNA organization highlights a marked and unusual chromosomal singularity inside the family Labridae.
Juárez-hernández L. G. - One of the best experts on this subject based on the ideXlab platform.
-
Listado ictiofaunístico de las bahías del Parque Nacional Huatulco, Oaxaca, México
Museu de Ciències Naturals de Barcelona, 2018Co-Authors: Juárez-hernández L. G., Tapia-garcía M.Abstract:Llista ictiofaunística de les badies del Parc Nacional Huatulco, Oaxaca, Mèxic Es va determinar la composició íctica de les badies del Parc Nacional Huatulco amb la tècnica de censos visuals mitjançant 351 transsectes d’una llargada de 10 m portats a terme entre gener de 2009 i desembre de 2010. Es van identificar 89 espècies pertanyents 69 gèneres i 42 famílies. Les famílies Labridae, Pomacentridae i Carangidae van integrar el nombre més gran d’espècies i els gèneres més ben representats van ser Haemulon, Halichoeres i Scarus. Les espècies Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis i Xenichthys xanti representen nous registres per a les badies de Huatulco i s’hi confirma la presència de Chaenomugil proboscideus, Narcine entemedor i Pseudobatos leucorhynchus. La comunitat íctica d’aquestes badies presenta més similituds amb les comunitats íctiques de Panamà i Costa Rica.Dades publicades a GBIF (doi:10.15470/eb4hrm).Se determinó la composición íctica de las bahías del Parque Nacional Huatulco con la técnica de censos visuales mediante 351 transectos de una longitud de 10 m efectuados entre enero de 2009 y diciembre de 2010. Se identificaron 89 especies pertenecientes a 69 géneros y 42 familias. Las familias Labridae, Pomacentridae y Carangidae integraron el mayor número de especies y los géneros mejor representados fueron Haemulon, Halichoeres y Scarus. Las especies Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis y Xenichthys xanti representan nuevos registros para las bahías de Huatulco y se confirma la presencia de Chaenomugil proboscideus, Narcine entemedor y Pseudobatos leucorhynchus en las mismas. La comunidad íctica de dichas bahías presenta mayor similitud con las comunidades ícticas de Panamá y Costa Rica. Datos publicados en GBIF (doi:10.15470/eb4hrm).Ichthyofaunistic checklist of the bays of Huatulco National Park, Oaxaca, Mexico We determined the composition of ichthyofauna of the bays of Huatulco National Park using the the visual census technique for 351 ten-meter-long transects between January 2009 and December 2010. Eighty-nine species belonging to 69 genera and 42 families were identified. The most frequently represented families, according to numbers of species, were Pomacentridae, Labridae and Carangidae, and the most numerous genera were Haemulon, Halichoeres and Scarus. Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis and Xenichthys xanti were recently recorded for the first time in the study area. The presence of Chaenomugil proboscideus, Narcine entemedor and Pseudobatos leucorhynchus in the Huatulco Bays is confirmed. The fish community in the Huatulco Bays was most similar to those in Panama and Costa Rica. Data published through GBIF (doi:10.15470/eb4hrm)
-
→ GBIF: Data paper Listado ictiofaunístico de las bahías del Parque Nacional Huatulco, Oaxaca, México
Museu de Ciències Naturals de Barcelona, 2018Co-Authors: Juárez-hernández L. G., Tapia-garcía M.Abstract:We determined the composition of ichthyofauna of the bays of Huatulco National Park using the the visual census technique for 351 ten-meter-long transects between January 2009 and December 2010. Eighty-nine species belonging to 69 genera and 42 families were identified. The most frequently represented families, according to numbers of species, were Pomacentridae, Labridae and Carangidae, and the most numerous genera were Haemulon, Halichoeres and Scarus. Acanthurus triostegus, Bothus constellathus, Chaetodipterus zonatus, Hemicaranx leucurus, Microlepidotus brevipinnis and Xenichthys xanti were recently recorded for the first time in the study area. The presence of Chaenomugil proboscideus, Narcine entemedor and Pseudobatos leucorhynchus in the Huatulco Bays is confirmed. The fish community in the Huatulco Bays was most similar to those in Panama and Costa Rica. Data published through GBIF (doi:10.15470/eb4hrm)
Emira Perez L G - One of the best experts on this subject based on the ideXlab platform.
-
aspectos reproductivos de Halichoeres bivittatus blocb 1791 pisces labridae en tocuchare golfo de cariaco venezuela
SABER, 2002Co-Authors: Emira Perez L GAbstract:Se examino un total de 172 especimenes de Halichoeres bivittatus, colectados en la localidad de Tocuchare, golfo de Cariaco desde noviembre 1996 a octubre 1997. Los individuos se presentaron en mayor proporcion en los estadios II y III. Los especimenes desarrollados y gravidos se encontraron en varias epocas del ano aunque en menor proporcion. La proporcion sexual se alejo significativamente de la relacion esperada 1:1 a favor de las hembras (x 2 = 16,33; p<0,01) con variaciones mensuales. La talla de primera madurez para las hembras se deterrnino en 72 mm y para el 500/o se estimo en 109,58 mm de longitud total. Halichoeres bivittatus se reproduce durante la mayor parte del ano, con un maximo de reproduccion de abril a octubre y en menor proporcion en diciembre. PALABRAS CLAVES: Peces, Reproduccion, Halichoeres bivittatus, Venezuela. ABSTRACT We examined a total of 172 specimens of Halichoeres bivittatus, collected from Tocuchare, Gulf of Cariaco, Venezuela, between November 1996 and October 1997. The highest numbers of specimens were found during stages II and III . Fully developed and gravid specimens were found during several periods of the year, although in lesser proportion. The sexual proportion moved significantly away from the expected relation 1:1, in favor of females (x 2 = 16,33; p<0,01 ), with monthly variations . First maturity length for females was 72 mm, and the estimated length for 50% of them was 109,58 mm. Halichoeres bivittatus reproduces during the entire year, with a peak from April to October and a minimum in December. KEY WORDS: Fish, Reproduction, Halichoeres bivitatus, Venezuela.
Karlla Danielle Jorge Amorim - One of the best experts on this subject based on the ideXlab platform.
-
interregional cytogenetic comparisons in Halichoeres and thalassoma wrasses labridae of coastal and insular regions of the southwestern atlantic
Genetics and Molecular Research, 2017Co-Authors: Karlla Danielle Jorge Amorim, Rodrigo Xavier Soares, Leonardo Luiz Calado, A T Borges, Gideao Wagner Werneck Felix Da Costa, Marcelo De Bello Cioffi, Luiz Antonio Carlos Bertollo, Wagner Franco MolinaAbstract:: The distribution patterns of marine biodiversity are complex, resulting from vicariant events and species dispersion, as well as local ecological and adaptive conditions. Furthermore, the wide geographic distribution of some species may be hindered by biogeographical barriers that can interfere in the gene flow. Cytogenetic analyses in marine fishes, especially those involving populations in small remote insular environments, remain scarce. In the Western Atlantic, species of wrasses from the genera Halichoeres and Thalassoma occur in biogeographic arrangements that make it possible to analyze cytogenetic patterns between coastal and widely separated island populations. Species of these genera were punctually analyzed in some Atlantic regions. In this study, we compared several chromosomal features, such as karyotype macrostructure, heterochromatic patterns, patterns of base-specific fluorochromes, Ag-NORs, and 18S and 5S ribosomal sites in Thalassoma noronhanum, Halichoeres poeyi, and Halichoeres radiatus individuals from distinct coastal or insular regions of Atlantic. Notably, all of them are characterized by multiple 18S and 5S rDNA sites with syntenic arrangements in some chromosome pairs. Individuals of T. noronhanum (between the insular regions of Rocas Atoll and Fernando de Noronha Archipelago - FNA) and H. poeyi (coastal areas from Northeastern Brazil) show no detectable differences among their cytogenetic patterns. On the other hand, H. radiatus from FNA and Sao Pedro and Sao Paulo Archipelago exhibit differences in the frequency of rDNA sites that could suggest some level of population structuring between these insular regions. Interregional cytogenetic inventories of marine species with wide geographic distribution need to be rapidly expanded. These data will allow a better understanding of the level of chromosomal stability between vast oceanic spaces, which may be less than previously thought.
-
Co-located 18S/5S rDNA arrays: an ancient and unusual chromosomal trait in Julidini species (Labridae, Perciformes).
Comparative cytogenetics, 2016Co-Authors: Karlla Danielle Jorge Amorim, Rodrigo Xavier Soares, Gideao Wagner Werneck Felix Da Costa, Marcelo De Bello Cioffi, Luiz Antonio Carlos Bertollo, Allyson Santos De Souza, Wagner Franco MolinaAbstract:Wrasses (Labridae) are extremely diversified marine fishes, whose species exhibit complex interactions with the reef environment. They are widely distributed in the Indian, Pacific and Atlantic oceans. Their species have displayed a number of karyotypic divergent processes, including chromosomal regions with complex structural organization. Current cytogenetic information for this family is phylogenetically and geographically limited and mainly based on conventional cytogenetic techniques. Here, the distribution patterns of heterochromatin, GC-specific chromosome regions and Ag-NORs, and the organization of 18S and 5S rDNA sites of the Atlantic species Thalassoma noronhanum (Boulenger, 1890), Halichoeres poeyi (Steindachner, 1867), Halichoeres radiatus (Linnaeus, 1758), Halichoeres brasiliensis (Bloch, 1791) and Halichoeres penrosei Starks, 1913, belonging to the tribe Julidini were analyzed. All the species exhibited 2n=48 chromosomes with variation in the number of chromosome arms among genera. Thalassoma noronhanum has 2m+46a, while species of the genus Halichoeres Ruppell, 1835 share karyotypes with 48 acrocentric chromosomes. The Halichoeres species exhibit differences in the heterochromatin distribution patterns and in the number and distribution of 18S and 5S rDNA sites. The occurrence of 18S/5S rDNA syntenic arrangements in all the species indicates a functionally stable and adaptive genomic organization. The phylogenetic sharing of this rDNA organization highlights a marked and unusual chromosomal singularity inside the family Labridae.
-
co located 18s 5s rdna arrays an ancient and unusual chromosomal trait in julidini species labridae perciformes
Comparative Cytogenetics, 2016Co-Authors: Karlla Danielle Jorge Amorim, Rodrigo Xavier Soares, Allyson Santos De Souza, Wagner Franco MolinaAbstract:Wrasses (Labridae) are extremely diversified marine fishes, whose species exhibit complex interactions with the reef environment. They are widely distributed in the Indian, Pacific and Atlantic oceans. Their species have displayed a number of karyotypic divergent processes, including chromosomal regions with complex structural organization. Current cytogenetic information for this family is phylogenetically and geographically limited and mainly based on conventional cytogenetic techniques. Here, the distribution patterns of heterochromatin, GC-specific chromosome regions and Ag-NORs, and the organization of 18S and 5S rDNA sites of the Atlantic species Thalassoma noronhanum (Boulenger, 1890), Halichoeres poeyi (Steindachner, 1867), Halichoeres radiatus (Linnaeus, 1758), Halichoeres brasiliensis (Bloch, 1791) and Halichoeres penrosei Starks, 1913, belonging to the tribe Julidini were analyzed. All the species exhibited 2n=48 chromosomes with variation in the number of chromosome arms among genera. Thalassoma noronhanum has 2m+46a, while species of the genus Halichoeres Ruppell, 1835 share karyotypes with 48 acrocentric chromosomes. The Halichoeres species exhibit differences in the heterochromatin distribution patterns and in the number and distribution of 18S and 5S rDNA sites. The occurrence of 18S/5S rDNA syntenic arrangements in all the species indicates a functionally stable and adaptive genomic organization. The phylogenetic sharing of this rDNA organization highlights a marked and unusual chromosomal singularity inside the family Labridae.
