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  1. AU="Garduño-Sánchez, Marco"
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  1. Article ; Online: Genetic and ecomorphological divergence between sympatric Astyanax morphs from Central America.

    Garita-Alvarado, Carlos A / Garduño-Sánchez, Marco Antonio / Barluenga, Marta / Ornelas-García, Claudia Patricia

    Journal of evolutionary biology

    2021  Volume 34, Issue 11, Page(s) 1752–1766

    Abstract: Intraspecific ecological and morphological polymorphism can promote ecological speciation and the build-up of reproductive isolation. Here, we evaluate correlations among morphology, trophic ecology and genetic differentiation between two divergent ... ...

    Abstract Intraspecific ecological and morphological polymorphism can promote ecological speciation and the build-up of reproductive isolation. Here, we evaluate correlations among morphology, trophic ecology and genetic differentiation between two divergent morphs (elongate and deep-body) of the fish genus Astyanax in the San Juan River basin in Central America, to infer the putative evolutionary mechanism shaping this system. We collected the two morphs from three water bodies and analysed: (1) the correlation between body shape and the shape of the premaxilla, a relevant trophic morphological structure, (2) the trophic level and niche width of each morph, (3) the correspondence between trophic level and body and premaxillary shape, and (4) the genetic differentiation between morphs using mitochondrial and nuclear markers. We found a strong correlation between the body and premaxillary shape of the morphs. The elongate-body morph had a streamlined body, a premaxilla with acuter angles and a narrower ascending process, and a higher trophic level, characteristic of species with predatorial habits. By contrast, the deep-body morph had a higher body depth, a premaxilla with less acute angles and a broader trophic niche, suggesting generalist habits. Despite the strong correlation between morphological and ecological divergence, the morphs showed limited genetic differentiation, supporting the idea that morphs may be undergoing incipient ecological speciation, although alternative scenarios such as stable polymorphism or plasticity should also be considered. This study provides support for the role of ecological factors promoting diversification in both lake and stream-dwelling freshwater fish.
    MeSH term(s) Animals ; Biological Evolution ; Fishes ; Genetic Speciation ; Lakes ; Polymorphism, Genetic ; Sympatry
    Language English
    Publishing date 2021-09-28
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1465318-7
    ISSN 1420-9101 ; 1010-061X
    ISSN (online) 1420-9101
    ISSN 1010-061X
    DOI 10.1111/jeb.13933
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  2. Article: Molecular Characterization of the Common Snook, Centropomus undecimalis (Bloch, 1792) in the Usumacinta Basin

    Terán-Martínez, Jazmín / Rodiles-Hernández, Rocío / Garduño-Sánchez, Marco A. A. / Ornelas-García, Claudia Patricia

    Diversity. 2021 July 29, v. 13, no. 8

    2021  

    Abstract: The common snook is one of the most abundant and economically important species in the Usumacinta basin in the Gulf of Mexico, which has led to overfishing, threatening their populations. The main goal of the present study was to assess the genetic ... ...

    Abstract The common snook is one of the most abundant and economically important species in the Usumacinta basin in the Gulf of Mexico, which has led to overfishing, threatening their populations. The main goal of the present study was to assess the genetic diversity and structure of the common snook along the Usumacinta River in order to understand the population dynamics and conservation status of the species. We characterized two mitochondrial markers (mtCox1 and mtCytb) and 11 microsatellites in the Usumacinta basin, which was divided into three zones: rainforest, floodplain and river delta. The mitochondrial data showed very low diversity, showing some haplotypic diversity differences between the rainforest and delta zones. In contrast, we consistently recovered two genetic clusters in the Usumacinta River basin with the nuclear data in both the DAPC and STRUCTURE analyses. These results were consistent with the AMOVA analyses, which showed significant differences among the genetic clusters previously recovered by DAPC and STRUCTURE. In terms of diversity distribution, the floodplain zone corresponded to the most diverse zone according to the mitochondrial and nuclear data, suggesting that this is a transition zone in the basin. Our results support the relevance of the molecular characterization and monitoring of the fishery resources at the Usumacinta River to better understand their connectivity, which could help in their conservation and management.
    Keywords Centropomus ; basins ; conservation status ; floodplains ; genetic variation ; microsatellite repeats ; mitochondria ; population dynamics ; rain forests ; river deltas ; rivers ; watersheds ; Gulf of Mexico
    Language English
    Dates of publication 2021-0729
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2518137-3
    ISSN 1424-2818
    ISSN 1424-2818
    DOI 10.3390/d13080347
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Genetic and ecomorphological divergence between sympatric Astyanax morphs from Central America

    Garita‐Alvarado, Carlos A. / Garduño‐Sánchez, Marco Antonio / Barluenga, Marta / Ornelas‐García, Claudia Patricia

    Journal of evolutionary biology. 2021 Nov., v. 34, no. 11

    2021  

    Abstract: Intraspecific ecological and morphological polymorphism can promote ecological speciation and the build‐up of reproductive isolation. Here, we evaluate correlations among morphology, trophic ecology and genetic differentiation between two divergent ... ...

    Abstract Intraspecific ecological and morphological polymorphism can promote ecological speciation and the build‐up of reproductive isolation. Here, we evaluate correlations among morphology, trophic ecology and genetic differentiation between two divergent morphs (elongate and deep‐body) of the fish genus Astyanax in the San Juan River basin in Central America, to infer the putative evolutionary mechanism shaping this system. We collected the two morphs from three water bodies and analysed: (1) the correlation between body shape and the shape of the premaxilla, a relevant trophic morphological structure, (2) the trophic level and niche width of each morph, (3) the correspondence between trophic level and body and premaxillary shape, and (4) the genetic differentiation between morphs using mitochondrial and nuclear markers. We found a strong correlation between the body and premaxillary shape of the morphs. The elongate‐body morph had a streamlined body, a premaxilla with acuter angles and a narrower ascending process, and a higher trophic level, characteristic of species with predatorial habits. By contrast, the deep‐body morph had a higher body depth, a premaxilla with less acute angles and a broader trophic niche, suggesting generalist habits. Despite the strong correlation between morphological and ecological divergence, the morphs showed limited genetic differentiation, supporting the idea that morphs may be undergoing incipient ecological speciation, although alternative scenarios such as stable polymorphism or plasticity should also be considered. This study provides support for the role of ecological factors promoting diversification in both lake and stream‐dwelling freshwater fish.
    Keywords Astyanax ; evolutionary biology ; freshwater fish ; genetic variation ; lakes ; mitochondria ; plasticity ; reproductive isolation ; sympatry ; trophic levels ; watersheds ; Central America
    Language English
    Dates of publication 2021-11
    Size p. 1752-1766.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 1465318-7
    ISSN 1420-9101 ; 1010-061X
    ISSN (online) 1420-9101
    ISSN 1010-061X
    DOI 10.1111/jeb.13933
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Mitochondrial phylogeography and molecular evolution of the rhodopsin visual pigment in troglobitic populations of

    Garduño-Sánchez, Marco A A / De Jesus-Bonilla, Vladimir / Perea, Silvia / Miranda-Gamboa, Ramses / Herrera-García, Andrea / De la Maza Benignos, Mauricio / Ornelas-García, Claudia Patricia

    Zoological research

    2023  Volume 44, Issue 4, Page(s) 761–775

    Abstract: Cave-adapted animals provide a unique opportunity to study the evolutionary mechanisms underlying phenotypic, metabolic, behavioral, and genetic evolution in response to cave environments. The Mexican tetra ( ...

    Abstract Cave-adapted animals provide a unique opportunity to study the evolutionary mechanisms underlying phenotypic, metabolic, behavioral, and genetic evolution in response to cave environments. The Mexican tetra (
    MeSH term(s) Animals ; Phylogeography ; Phylogeny ; Rhodopsin/genetics ; Characidae/genetics ; Evolution, Molecular
    Chemical Substances Rhodopsin (9009-81-8)
    Language English
    Publishing date 2023-07-19
    Publishing country China
    Document type Journal Article
    ISSN 2095-8137
    ISSN 2095-8137
    DOI 10.24272/j.issn.2095-8137.2022.437
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Phylogeographic relationships and morphological evolution between cave and surface Astyanax mexicanus populations (De Filippi 1853) (Actinopterygii, Characidae).

    Garduño-Sánchez, Marco / Hernández-Lozano, Jorge / Moran, Rachel L / Miranda-Gamboa, Ramsés / Gross, Joshua B / Rohner, Nicolas / Elliott, William R / Miller, Jeff / Lozano-Vilano, Lourdes / McGaugh, Suzanne E / Ornelas-García, C Patricia

    Molecular ecology

    2023  Volume 32, Issue 20, Page(s) 5626–5644

    Abstract: The Astyanax mexicanus complex includes two different morphs, a surface- and a cave-adapted ecotype, found at three mountain ranges in Northeastern Mexico: Sierra de El Abra, Sierra de Guatemala and Sierra de la Colmena (Micos). Since their discovery, ... ...

    Abstract The Astyanax mexicanus complex includes two different morphs, a surface- and a cave-adapted ecotype, found at three mountain ranges in Northeastern Mexico: Sierra de El Abra, Sierra de Guatemala and Sierra de la Colmena (Micos). Since their discovery, multiple studies have attempted to characterize the timing and the number of events that gave rise to the evolution of these cave-adapted ecotypes. Here, using RADseq and genome-wide sequencing, we assessed the phylogenetic relationships, genetic structure and gene flow events between the cave and surface Astyanax mexicanus populations, to estimate the tempo and mode of evolution of the cave-adapted ecotypes. We also evaluated the body shape evolution across different cave lineages using geometric morphometrics to examine the role of phylogenetic signal versus environmental pressures. We found strong evidence of parallel evolution of cave-adapted ecotypes derived from two separate lineages of surface fish and hypothesize that there may be up to four independent invasions of caves from surface fish. Moreover, a strong congruence between the genetic structure and geographic distribution was observed across the cave populations, with the Sierra de Guatemala the region exhibiting most genetic drift among the cave populations analysed. Interestingly, we found no evidence of phylogenetic signal in body shape evolution, but we found support for parallel evolution in body shape across independent cave lineages, with cavefish from the Sierra de El Abra reflecting the most divergent morphology relative to surface and other cavefish populations.
    Language English
    Publishing date 2023-09-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1126687-9
    ISSN 1365-294X ; 0962-1083
    ISSN (online) 1365-294X
    ISSN 0962-1083
    DOI 10.1111/mec.17128
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    In stock of ZB MED Bonn / Germany

    Z 2005/723: Show issues

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  6. Article ; Online: Species Delimitation of Scavenger Flies in the Valley of Mexico.

    Pedraza-Lara, Carlos / Garduño-Sánchez, Marco A / Téllez-García, Isabel / Rodríguez-González, Stephany / Nuple-Juárez, Eduardo / Guardado-Estrada, Mariano

    Journal of medical entomology

    2021  Volume 58, Issue 6, Page(s) 2206–2215

    Abstract: Identification of species involved in cadaveric decomposition, such as scavenger Diptera, is a fundamental step for the use of entomological evidence in court. Identification based on morphology is widely used in forensic cases; however, taxonomic ... ...

    Abstract Identification of species involved in cadaveric decomposition, such as scavenger Diptera, is a fundamental step for the use of entomological evidence in court. Identification based on morphology is widely used in forensic cases; however, taxonomic knowledge of scavenger fauna is poor for many groups and for many countries, particularly Neotropical ones. A number of studies have documented the utility of a DNA barcoding strategy to assist in the identification of poorly known and diverse groups, particularly in cases involving immature states or fragmented organisms. To provide baseline knowledge of the diversity of scavenger Diptera in the Valley of Mexico, we generated a DNA barcode collection comprised of sequences of the cytochrome c oxidase subunit 1 (COI) gene for all families sampled at a nature reserve located in this region. We collected and identified specimens on the basis of morphology and a species delimitation analysis. Our analyses of 339 individuals delineated 42 species distributed across nine families of Diptera. The richest families were Calliphoridae (9 species), Sarcophagidae (7 species), and Phoridae (6 species). We found many of the species previously recorded for the Valley of Mexico, plus 18 new records for the region. Our study highlights the utility of DNA barcoding as a first-step strategy to assess species richness of poorly studied scavenger fly taxa.
    MeSH term(s) Animal Distribution ; Animals ; Calliphoridae/classification ; DNA Barcoding, Taxonomic ; Diptera/classification ; Electron Transport Complex IV/analysis ; Sarcophagidae/classification
    Chemical Substances Electron Transport Complex IV (EC 1.9.3.1)
    Language English
    Publishing date 2021-06-25
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 410635-0
    ISSN 1938-2928 ; 0022-2585
    ISSN (online) 1938-2928
    ISSN 0022-2585
    DOI 10.1093/jme/tjab094
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 303: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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  7. Article: Species Delimitation of Scavenger Flies in the Valley of Mexico

    Pedraza-Lara, Carlos / Garduño-Sánchez, Marco A. / Téllez-García, Isabel / Rodríguez-González, Stephany / Nuple-Juárez, Eduardo / Guardado-Estrada, Mariano

    Journal of medical entomology. 2021 June 25, v. 58, no. 6

    2021  

    Abstract: Identification of species involved in cadaveric decomposition, such as scavenger Diptera, is a fundamental step for the use of entomological evidence in court. Identification based on morphology is widely used in forensic cases; however, taxonomic ... ...

    Abstract Identification of species involved in cadaveric decomposition, such as scavenger Diptera, is a fundamental step for the use of entomological evidence in court. Identification based on morphology is widely used in forensic cases; however, taxonomic knowledge of scavenger fauna is poor for many groups and for many countries, particularly Neotropical ones. A number of studies have documented the utility of a DNA barcoding strategy to assist in the identification of poorly known and diverse groups, particularly in cases involving immature states or fragmented organisms. To provide baseline knowledge of the diversity of scavenger Diptera in the Valley of Mexico, we generated a DNA barcode collection comprised of sequences of the cytochrome c oxidase subunit 1 (COI) gene for all families sampled at a nature reserve located in this region. We collected and identified specimens on the basis of morphology and a species delimitation analysis. Our analyses of 339 individuals delineated 42 species distributed across nine families of Diptera. The richest families were Calliphoridae (9 species), Sarcophagidae (7 species), and Phoridae (6 species). We found many of the species previously recorded for the Valley of Mexico, plus 18 new records for the region. Our study highlights the utility of DNA barcoding as a first-step strategy to assess species richness of poorly studied scavenger fly taxa.
    Keywords Calliphoridae ; DNA barcoding ; Neotropics ; Phoridae ; Sarcophagidae ; conservation areas ; fauna ; forensic sciences ; genes ; medical entomology ; species richness ; Mexico
    Language English
    Dates of publication 2021-0625
    Size p. 2206-2215.
    Publishing place Entomological Society of America
    Document type Article
    ZDB-ID 410635-0
    ISSN 0022-2585
    ISSN 0022-2585
    DOI 10.1093/jme/tjab094
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 78/543: Show issues

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  8. Article: Genetic diversity and structure of one of the most endangered freshwater fish species in Mexico:

    Beltrán-López, Rosa G / González-Díaz, Alfonso A / Soria-Barreto, Miriam / Garduño-Sánchez, Marco Antonio / Xochitla-Castrejón, Carmela / Rodiles-Hernández, Rocío / Ornelas-García, Claudia Patricia

    PeerJ

    2021  Volume 9, Page(s) e11952

    Abstract: The endangered Chiapas ... ...

    Abstract The endangered Chiapas killifish
    Language English
    Publishing date 2021-08-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2703241-3
    ISSN 2167-8359
    ISSN 2167-8359
    DOI 10.7717/peerj.11952
    Database MEDical Literature Analysis and Retrieval System OnLINE

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