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  1. Article ; Online: Karyotype characterization of Trigona fulviventris Guérin, 1835 (Hymenoptera, Meliponini) by C banding and fluorochrome staining

    Domingues Alayne Magalhães Trindade / Waldschmidt Ana Maria / Andrade Sintia Emmanuelle / Andrade-Souza Vanderly / Alves Rogério Marco de Oliveira / Silva Junior Juvenal Cordeiro da / Costa Marco Antônio

    Genetics and Molecular Biology, Vol 28, Iss 3, Pp 390-

    report of a new chromosome number in the genus

    2005  Volume 393

    Abstract: Although many species of the genus Trigona have been taxonomically described, cytogenetic studies of these species are still rare. The aim of the present study was to obtain cytogenetic data by conventional staining, C banding and fluorochrome staining ... ...

    Abstract Although many species of the genus Trigona have been taxonomically described, cytogenetic studies of these species are still rare. The aim of the present study was to obtain cytogenetic data by conventional staining, C banding and fluorochrome staining for the karyotype characterization of the species Trigona fulviventris. Cytogenetic analysis revealed that this species possesses a diploid chromosome number of 2n = 32, different from most other species of this genus studied so far. This variation was probably due to the centric fusion in a higher numbered ancestral karyotype, this fusion producing the large metacentric chromosome pair and the lower chromosome number observed in Trigona fulviventris. Heterochromatin was detected in the pericentromeric region of the first chromosome pair and in one of the arms of the remaining pairs. Base-specific fluorochrome staining with 4'-6-diamidino-2-phenylindole (DAPI) showed that the heterochromatin was rich in AT base pairs (DAPI+) except for pair 13, which was chromomycin A3 (CMA3) positive indicating an excess of GC base pairs. Our data also suggests that there was variation in heterochromatin base composition.
    Keywords cytogenetics ; heterochromatin ; evolution ; stingless bees ; Genetics ; QH426-470 ; Biology (General) ; QH301-705.5 ; Science ; Q ; DOAJ:Genetics ; DOAJ:Biology ; DOAJ:Biology and Life Sciences
    Subject code 590
    Language English
    Publishing date 2005-01-01T00:00:00Z
    Publisher Sociedade Brasileira de Genética
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Atlantic flower-invertebrate interactions: A data set of occurrence and frequency of floral visits.

    Boscolo, Danilo / Nobrega Rodrigues, Bárbara / Ferreira, Patrícia Alves / Lopes, Luciano Elsinor / Tonetti, Vinicius Rodrigues / Reis Dos Santos, Isabela Cristhina / Hiruma-Lima, Juliana Akemi / Nery, Laura / Baptista de Lima, Karoline / Perozi, Jéssica / Freitas, André Victor Lucci / Viana, Blandina Felipe / Antunes-Carvalho, Caio / Amorim, Dalton de Souza / Freitas de Oliveira, Favízia / Groppo, Milton / Absy, Maria Lúcia / de Almeida-Scabbia, Renata Jimenez / Alves-Araújo, Anderson /
    de Amorim, Felipe Wanderley / Antiqueira, Pablo Augusto Poleto / Antonini, Yasmine / Aoki, Camila / Dos Santos Aragão, Daniele / Balbino, Tais Cristina Teixeira / da Silva Ferreira Bandeira, Michele / Barbosa, Bruno Corrêa / de Vasconcellos Barbosa, Maria Regina / Baronio, Gudryan Jackson / Barros, Leví Oliveira / Beal-Neves, Mariana / Bertollo, Victor Martins / de Melo Bezerra, Antonio Diego / Buzatto, Cristiano Roberto / Carneiro, Liedson Tavares / Caron, Edilson / Carpim, Camila Silva / Carvalho, Emanuela Simoura / Carvalho, Tuane Letícia / Carvalho-Leite, Ludimila Juliele / Cascaes, Mainara Figueiredo / de Castro, Flávio Siqueira / Cavalleri, Adriano / Cazetta, Eliana / Cerezini, Monise Terra / Coelho, Luís Francisco Mello / Colares, Renato / Cordeiro, Guaraci Duran / Cordeiro, Juliana / da Silva Corrêa, Angela Maria / da Costa, Fernanda Vieira / Covre, Cléber / Cruz, Renata Drummond Marinho / Cruz-Neto, Oswaldo / Correia-da-Rocha-Filho, Léo / Delabie, Jacques Hubert Charles / da Costa Dórea, Marcos / do-Nascimento, Viviany Teixeira / Alves Dos-Santos, Jean Miguel / Duarte, Marcelo / Duarte, Marília Cristina / Duarte, Olívia Maria Pereira / Dutilh, Julie Henriette Antoinette / Emerick, Betina Pereira / Fabiano, Gabrielly Dos Santos / Farache, Fernando Henrique Antoniolli / de Faria, Ana Paula Gelli / Fernandes, Geraldo Wilson / Maria Abreu Ferreira, Pedro / Ferreira-Caliman, Maria Juliana / Ferreira, Lívia Maria Negrini / Filgueira de Sá, Túlio Freitas / Franceschinelli, Edivani Villaron / Franco-Assis, Greice Ayra / Fregolente Faracco Mazziero, Frederico / Freitas, Breno Magalhães / Freitas, Joelcio / Galastri, Natália Arias / Galetto, Leonardo / Garcia, Caroline Tito / Amela García, María Teresa / Garcia, Nicole Luize / Garófalo, Carlos Alberto / Gélvez-Zúñiga, Irene / Goldas, Camila da Silva / Guerra, Tadeu José / Guerra, Tânia Mara / Harter-Marques, Birgit / Hipólito, Juliana / Kamke, Rafael / Klein, Ricardo Pablo / Koch, Elmo Borges de Azevedo / Landgref-Filho, Paulo / Laroca, Sebastião / Leandro, Cristiane Martins / Lima, Reinanda / de Lima, Taysla Roberta Almeida / Lima-Verde, Luiz Wilson / de Lírio, Elton John / Lopes, Ariadna Valentina / Luizi-Ponzo, Andrea Pereira / Machado, Isabel Cristina Sobreira / Machado, Tatiana / Magalhães, Fabrício Severo / Mahlmann, Thiago / Mariano, Cléa Dos Santos Ferreira / Marques, Thamy Evellini Dias / Martello, Felipe / Martins, Celso Feitosa / Martins, Mauricio Nogueira / Martins, Rafael / Mascarenhas, André Luiz Santos / de Assis Mendes, Geovana / Mendonça, Milton de Souza / Menini Neto, Luiz / Milward-de-Azevedo, Michaele Alvim / Miranda, Adrianne Oliveira / Montoya-Pfeiffer, Paula María / Moraes, Andreza Magro / Moraes, Bruna Borges / Moreira, Eduardo Freitas / Morini, Maria Santina / Moure-Oliveira, Diego / De Nadai, Letícia Fabri / Nagatani, Victor Hideki / Nervo, Michelle Helena / de Siqueira Neves, Frederico / de Novais, Jaílson Santos / Araújo-Oliveira, Évellyn Silva / de Oliveira, João Henrique Figueredo / Pacheco-Filho, Alípio José de Souza / Palmieri, Luciano / Pareja, Martin / Passarella, Marcella de Almeida / Passos, Nayra da Mata / Paulino-Neto, Hipólito Ferreira / Luna Peixoto, Ariane / Pereira, Luciana Carvalho / Pereira, Rodrigo Augusto Santinelo / Pereira-Silva, Brenda / Pincheira-Ulbrich, Jimmy / Pinheiro, Mardiore / Piratelli, Augusto João / Podgaiski, Luciana Regina / Polizello, Diego Santos / Prado, Lívia Pires do / Prezoto, Fabio / Quadros, Franciele Rosset de / Queiroz, Elisa Pereira / Glebya Maciel Quirino, Zelma / Rabello, Ananza Mara / Rabeschini, Gabriela Beatriz Pereira / Ramalho, Monna Myrnna Mangueira / Ramos, Flavio Nunes / Rattis, Ludmila / Rezende, Luiz Henrique Gonçalves de / Ribeiro, Caroline / Robe, Lizandra Jaqueline / Rocha, Ely Márley de Souza Ribeiro / Rodrigues, Ricardo Ribeiro / Romero, Gustavo Quevedo / Roque, Nádia / Sabino, William de Oliveira / Sano, Paulo Takeo / Reis, Patricia da Silva Santana / Dos Santos, Fernando Silva / Alves Dos Santos, Isabel / Dos Santos, Francisco de Assis Ribeiro / Silva Dos Santos, Igor / Sartorello, Ricardo / Schmitz, Hermes José / Sigrist, Maria Rosângela / Silva Junior, Juvenal Cordeiro / Silva, Ana Carolina Granero E / da Silva, Carolina Veronese Corrêa / Alves Vieira Silva, Beatriz Symara / Silva, Bruna Leticia de Freitas / Silva, Cláudia Inês / da Silva, Fabiana Oliveira / Silva, Jéssica Luiza Souza E / Silva, Nathalia Sampaio / da Silva, Otávio Guilherme Morais / Silva Neto, Carlos de Melo E / Silva Neto, Edito Romão / Silveira, Denise / Silveira, Maxwell Souza / Singer, Rodrigo Bustos / Soares, Leiza Aparecida Souza Serafim / Locatelli de Souza, Evelise Márcia / de Souza, Jana Magaly Tesserolli / Steiner, Josefina / Teixeira-Gamarra, Mara Cristina / Trentin, Bruno Alves / Varassin, Isabela Galarda / Vila-Verde, Gabriel / Yoshikawa, Vania Nobuko / Zanin, Elisabete Maria / Galetti, Mauro / Ribeiro, Milton Cezar

    Ecology

    2023  Volume 104, Issue 3, Page(s) e3900

    Abstract: Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the ... ...

    Abstract Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the effects of environmental factors on ecological processes. Gathering such data is, however, costly and time-consuming, especially in the highly diverse tropics. We aimed to provide a comprehensive repository of available flower-invertebrate interaction information for the Atlantic Forest, a South American tropical forest domain. Data were obtained from published works and "gray literature," such as theses and dissertations, as well as self-reports by co-authors. The data set has ~18,000 interaction records forming 482 networks, each containing between one and 1061 interaction links. Each network was sampled for about 200 h or less, with few exceptions. A total of 641 plant genera within 136 different families and 39 orders were reported, with the most abundant and rich families being Asteraceae, Fabaceae, and Rubiaceae. Invertebrates interacting with these plants were all arthropods from 10 orders, 129 families, and 581 genera, comprising 2419 morphotypes (including 988 named species). Hymenoptera was the most abundant and diverse order, with at least six times more records than the second-ranked order (Lepidoptera). The complete data set shows Hymenoptera interacting with all plant orders and also shows Diptera, Lepidoptera, Coleoptera, and Hemiptera to be important nodes. Among plants, Asterales and Fabales had the highest number of interactions. The best sampled environment was forest (~8000 records), followed by pastures and crops. Savanna, grasslands, and urban environments (among others) were also reported, indicating a wide range of approaches dedicated to collecting flower-invertebrate interaction data in the Atlantic Forest domain. Nevertheless, most reported data were from forest understory or lower strata, indicating a knowledge gap about flower-invertebrate interactions at the canopy. Also, access to remote regions remains a limitation, generating sampling bias across the geographical range of the Atlantic Forest. Future studies in these continuous and hard-to-access forested areas will yield important new information regarding the interactions between flowers and invertebrates in the Atlantic Forest. There are no copyright restrictions on the data set. Please cite this data paper if the data are used in publications and teaching events.
    MeSH term(s) Humans ; Animals ; Ecosystem ; Invertebrates ; Forests ; Plants ; Lepidoptera ; Hymenoptera ; Flowers ; Pollination
    Language English
    Publishing date 2023-01-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2010140-5
    ISSN 1939-9170 ; 0012-9658
    ISSN (online) 1939-9170
    ISSN 0012-9658
    DOI 10.1002/ecy.3900
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Atlantic flower–invertebrate interactions: A data set of occurrence and frequency of floral visits

    Boscolo, Danilo / Nobrega Rodrigues, Bárbara / Ferreira, Patrícia Alves / Lopes, Luciano Elsinor / Tonetti, Vinicius Rodrigues / Reis dos Santos, Isabela Cristhina / Hiruma‐Lima, Juliana Akemi / Nery, Laura / Baptista de Lima, Karoline / Perozi, Jéssica / Freitas, André Victor Lucci / Viana, Blandina Felipe / Antunes‐Carvalho, Caio / Amorim, Dalton de Souza / Freitas de Oliveira, Favízia / Groppo, Milton / Absy, Maria Lucia / de Almeida‐Scabbia, Renata Jimenez / Alves‐Araújo, Anderson /
    de Amorim, Felipe Wanderley / Antiqueira, Pablo Augusto Poleto / Antonini, Yasmine / Aoki, Camila / dos Santos Aragão, Daniele / Balbino, Tais Cristina Teixeira / da Silva Ferreira Bandeira, Michele / Barbosa, Bruno Corrêa / Barbosa, Maria Regina de V. / Baronio, Gudryan Jackson / Barros, Leví Oliveira / Beal‐Neves, Mariana / Bertollo, Victor Martins / de Melo Bezerra, Antonio Diego / Buzatto, Cristiano Roberto / Carneiro, Liedson Tavares / Caron, Edilson / Carpim, Camila Silva / Carvalho, Emanuela Simoura / Carvalho, Tuane Letícia / Carvalho‐Leite, Ludimila Juliele / Cascaes, Mainara Figueiredo / de Castro, Flávio Siqueira / Cavalleri, Adriano / Cazetta, Eliana / Cerezini, Monise Terra / Coelho, Luís Francisco Mello / Colares, Renato / Cordeiro, Guaraci Duran / Cordeiro, Juliana / da Silva Corrêa, Angela Maria / da Costa, Fernanda Vieira / Covre, Cléber / Cruz, Renata Drummond Marinho / Cruz‐Neto, Oswaldo / Correia‐da‐Rocha‐Filho, Léo / Delabie, Jacques Hubert Charles / da Costa Dórea, Marcos / do‐Nascimento, Viviany Teixeira / Alves dos‐Santos, Jean Miguel / Duarte, Marcelo / Duarte, Marília Cristina / Duarte, Olívia Maria Pereira / Dutilh, Julie Henriette Antoinette / Emerick, Betina Pereira / Fabiano, Gabrielly dos Santos / Farache, Fernando Henrique Antoniolli / de Faria, Ana Paula Gelli / Fernandes, Geraldo Wilson / Maria Abreu Ferreira, Pedro / Ferreira‐Caliman, Maria Juliana / Ferreira, Lívia Maria Negrini / Filgueira de Sá, Túlio Freitas / Franceschinelli, Edivani Villaron / Franco‐Assis, Greice Ayra / Fregolente Faracco Mazziero, Frederico / Freitas, Breno Magalhães / Freitas, Joelcio / Galastri, Natália Arias / Galetto, Leonardo / Garcia, Caroline Tito / Amela García, María Teresa / Garcia, Nicole Luize / Garófalo, Carlos Alberto / Gélvez‐Zúñiga, Irene / Goldas, Camila da Silva / Guerra, Tadeu José / Guerra, Tânia Mara / Harter‐Marques, Birgit / Hipólito, Juliana / Kamke, Rafael / Klein, Ricardo Pablo / Koch, Elmo Borges de Azevedo / Landgref‐Filho, Paulo / Laroca, Sebastião / Leandro, Cristiane Martins / Lima, Reinanda / de Lima, Taysla Roberta Almeida / Lima‐Verde, Luiz Wilson / de Lírio, Elton John / Lopes, Ariadna Valentina / Luizi‐Ponzo, Andrea Pereira / Machado, Isabel Cristina Sobreira / Machado, Tatiana / Magalhães, Fabrício Severo / Mahlmann, Thiago / Mariano, Cléa dos Santos Ferreira / Marques, Thamy Evellini Dias / Martello, Felipe / Martins, Celso Feitosa / Martins, Mauricio Nogueira / Martins, Rafael / Mascarenhas, André Luiz Santos / de Assis Mendes, Geovana / Mendonça, Milton de Souza / Menini Neto, Luiz / Milward‐de‐Azevedo, Michaele Alvim / Miranda, Adrianne Oliveira / Montoya‐Pfeiffer, Paula María / Moraes, Andreza Magro / Moraes, Bruna Borges / Moreira, Eduardo Freitas / Morini, Maria Santina / Moure‐Oliveira, Diego / De Nadai, Letícia Fabri / Nagatani, Victor Hideki / Nervo, Michelle Helena / de Siqueira Neves, Frederico / de Novais, Jaílson Santos / Araújo‐Oliveira, Évellyn Silva / de Oliveira, João Henrique Figueredo / Pacheco‐Filho, Alípio José de Souza / Palmieri, Luciano / Pareja, Martin / Passarella, Marcella de Almeida / Passos, Nayra da Mata / Paulino‐Neto, Hipólito Ferreira / Peixoto, Ariane Luna / Pereira, Luciana Carvalho / Pereira, Rodrigo Augusto Santinelo / Pereira‐Silva, Brenda / Pincheira‐Ulbrich, Jimmy / Pinheiro, Mardiore / Piratelli, Augusto João / Podgaiski, Luciana Regina / Polizello, Diego Santos / Prado, Lívia Pires do / Prezoto, Fábio / Quadros, Franciele Rosset de / Queiroz, Elisa Pereira / Glebya Maciel Quirino, Zelma / Rabello, Ananza Mara / Rabeschini, Gabriela Beatriz Pereira / Ramalho, Monna Myrnna Mangueira / Ramos, Flavio Nunes / Rattis, Ludmila / Rezende, Luiz Henrique Gonçalves de / Ribeiro, Caroline / Robe, Lizandra Jaqueline / Rocha, Ely Márley de Souza Ribeiro / Rodrigues, Ricardo Ribeiro / Romero, Gustavo Quevedo / Roque, Nádia / Sabino, William de Oliveira / Sano, Paulo Takeo / Reis, Patricia da Silva Santana / dos Santos, Fernando Silva / Santos, Isabel Alves dos / Santos, Francisco de Assis Ribeiro dos / Silva dos Santos, Igor / Sartorello, Ricardo / Schmitz, Hermes José / Sigrist, Maria Rosângela / Silva Junior, Juvenal Cordeiro / Silva, Ana Carolina Granero e / da Silva, Carolina Veronese Corrêa / Alves Vieira Silva, Beatriz Symara / Silva, Bruna Leticia de Freitas / Silva, Cláudia Inês / Silva, Fabiana Oliveira da / Silva, Jéssica Luiza Souza e / Silva, Nathalia Sampaio / da Silva, Otávio Guilherme Morais / Silva Neto, Carlos de Melo e / Silva Neto, Edito Romão / Silveira, Denise / Silveira, Maxwell Souza / Singer, Rodrigo Bustos / Soares, Leiza Aparecida Souza Serafim / Locatelli de Souza, Evelise Márcia / de Souza, Jana Magaly Tesserolli / Steiner, Josefina / Teixeira‐Gamarra, Mara Cristina / Trentin, Bruno Alves / Varassin, Isabela Galarda / Vila‐Verde, Gabriel / Yoshikawa, Vania Nobuko / Zanin, Elisabete Maria / Galetti, M. / Ribeiro, Milton Cezar

    Ecology. 2023 Mar., v. 104, no. 3 p.e3900-

    2023  

    Abstract: Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the ... ...

    Abstract Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the effects of environmental factors on ecological processes. Gathering such data is, however, costly and time‐consuming, especially in the highly diverse tropics. We aimed to provide a comprehensive repository of available flower–invertebrate interaction information for the Atlantic Forest, a South American tropical forest domain. Data were obtained from published works and “gray literature,” such as theses and dissertations, as well as self‐reports by co‐authors. The data set has ~18,000 interaction records forming 482 networks, each containing between one and 1061 interaction links. Each network was sampled for about 200 h or less, with few exceptions. A total of 641 plant genera within 136 different families and 39 orders were reported, with the most abundant and rich families being Asteraceae, Fabaceae, and Rubiaceae. Invertebrates interacting with these plants were all arthropods from 10 orders, 129 families, and 581 genera, comprising 2419 morphotypes (including 988 named species). Hymenoptera was the most abundant and diverse order, with at least six times more records than the second‐ranked order (Lepidoptera). The complete data set shows Hymenoptera interacting with all plant orders and also shows Diptera, Lepidoptera, Coleoptera, and Hemiptera to be important nodes. Among plants, Asterales and Fabales had the highest number of interactions. The best sampled environment was forest (~8000 records), followed by pastures and crops. Savanna, grasslands, and urban environments (among others) were also reported, indicating a wide range of approaches dedicated to collecting flower–invertebrate interaction data in the Atlantic Forest domain. Nevertheless, most reported data were from forest understory or lower strata, indicating a knowledge gap about flower–invertebrate interactions at the canopy. Also, access to remote regions remains a limitation, generating sampling bias across the geographical range of the Atlantic Forest. Future studies in these continuous and hard‐to‐access forested areas will yield important new information regarding the interactions between flowers and invertebrates in the Atlantic Forest. There are no copyright restrictions on the data set. Please cite this data paper if the data are used in publications and teaching events.
    Keywords Asteraceae ; Coleoptera ; Diptera ; Fabaceae ; Hemiptera ; Hymenoptera ; Lepidoptera ; Rubiaceae ; canopy ; data collection ; ecosystems ; morphs ; savannas ; tropical forests ; understory
    Language English
    Dates of publication 2023-03
    Publishing place John Wiley & Sons, Inc.
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 1797-8
    ISSN 0012-9658
    ISSN 0012-9658
    DOI 10.1002/ecy.3900
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: A multi-approach analysis of the genetic diversity in populations of Astyanax aff. bimaculatus Linnaeus, 1758 (Teleostei: Characidae) from Northeastern Brazil

    Pamponet, Vanessa de Carvalho Cayres(Universidade Estadual de Santa Cruz Dep. Ciências Biológicas) / Carneiro, Paulo Luiz Souza(Universidade Estadual do Sudoeste da Bahia Dep. Ciências Biológicas) / Affonso, Paulo Roberto Antunes de Mello(Universidade Estadual do Sudoeste da Bahia Dep. Ciências Biológicas) / Miranda, Viviam Souto(Universidade Estadual do Sudoeste da Bahia Dep. Ciências Biológicas) / Silva Júnior, Juvenal Cordeiro(Universidade Estadual do Sudoeste da Bahia Dep. Ciências Biológicas) / Oliveira, Claudine Gonçalves de(Universidade Estadual de Santa Cruz Dep. Ciências Biológicas) / Gaiotto, Fernanda Amato(Universidade Estadual de Santa Cruz Dep. Ciências Biológicas)

    Neotropical Ichthyology

    2008/12  

    Abstract: Few reports are available about the ichthyofauna of typical semi-arid rivers, although the regional diversity has been constantly threatened by human activities, mainly related to impoundment and construction of dams. The goal of the present work was to ... ...

    Abstract Few reports are available about the ichthyofauna of typical semi-arid rivers, although the regional diversity has been constantly threatened by human activities, mainly related to impoundment and construction of dams. The goal of the present work was to evaluate using different methods, the population genetic structure of a characin fish, Astyanax aff. bimaculatus, widespread throughout hydrographic basins of Bahia, Northeastern Brazil. Morphological (meristic and morphometric data), cytogenetic (karyotype and Ag-NOR), and molecular (RAPD and SPAR) analyses were carried out in specimens collected upstream and downstream of Pedra Dam, in the main channel of Contas River (Contas River Basin), and in the Mineiro stream, which belongs to the adjacent Recôncavo Sul basin. Few external differences were detected among populations, where the individuals collected upstream of Pedra Dam were slightly larger than the others. Cytogenetic data also showed a similar karyotypic pattern (2n=50; 6m+28sm+12st+4a; FN= 96) and NORs located on the short arms of up to two chromosome pairs, with numerical inter- and intra-populational variation. Nonetheless, RAPD and SPAR analyses differentiated reliably the three populations, revealing striking differences in the allele frequencies among the localities studied and a significant difference in population structure index (Fst=0.1868, P<0.0001). The differences between populations within a same river were as significant as those between distinct hydrographic basins, indicating that the dam/reservoir represents an effective barrier to gene flow. Additionally, environmental peculiarities from each locality are also believed to influence the genetic patterns detected herein. On the other hand, the similarity between samples from Contas River and Recôncavo Sul basins could be related to a common evolutionary history, since both basins are geographically close to each other. Finally, the present study shows that a multi-approach analysis is particularly useful in identifying the population structure of widely distributed species and to evaluate the impacts of human activities on natural fish populations.
    Language English
    Document type Article
    ISSN 1679-6225
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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