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  1. Article: Long-term assessment of trace elements in franciscana dolphins from the Río de la Plata estuary and adjacent Atlantic waters

    Garcia-Garin, Odei / Borrell, Asunción / Vighi, Morgana / Aguilar, Alex / Valdivia, Meica / González, Enrique M / Drago, Massimiliano

    Science of the total environment. 2021 Sept. 20, v. 788

    2021  

    Abstract: The estuary of Río de la Plata, in the eastern coast of South America, is a highly anthropized area that brings a high load of contaminants to the surrounding waters, which may have detrimental effects on the local marine fauna. The franciscana dolphin ( ... ...

    Abstract The estuary of Río de la Plata, in the eastern coast of South America, is a highly anthropized area that brings a high load of contaminants to the surrounding waters, which may have detrimental effects on the local marine fauna. The franciscana dolphin (Pontoporia blainvillei) is a small cetacean species endemic of the southwestern Atlantic Ocean listed as Vulnerable in the IUCN red list. In this study, we assessed the concentrations of 13 trace elements in bone samples from 100 franciscana dolphins that were found stranded dead or incidentally bycaught in the Río de la Plata and adjacent coast between 1953 and 2015. Elements were, in decreasing order of mean concentrations: Zn > Sr > Fe > Al > Mn > Cu > Pb > Cr > Ni > As > Hg > Cd > Se. The concentrations of Al, Cr and Fe were slightly higher in females than in males. The concentrations of As, Ni, and Pb significantly decreased with body length. Throughout the study period, the concentrations of Al, Cr, Cu, Fe, Mn and Ni significantly increased, while the concentrations of As, Pb and Sr significantly decreased. The increasing trends may be due to increased inputs from river discharges, the leather industry and petroleum refineries, while the decrease in Pb may be due to the ban in the use of this element as an additive in gasoline and as component of car batteries. This investigation supports the validity of analysing trace element in bone, a tissue available in scientific collections and museums, to retrospectively examine variation over long temporal scales and thus assess long-term trends in pollution.
    Keywords Pontoporia blainvillei ; body length ; coasts ; dolphins ; environment ; estuaries ; fauna ; gasoline ; leather industry ; petroleum ; pollution ; rivers ; Atlantic Ocean ; South America
    Language English
    Dates of publication 2021-0920
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2021.147797
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: The isotopic niche of Atlantic, biting marine mammals and its relationship to skull morphology and body size.

    Drago, Massimiliano / Signaroli, Marco / Valdivia, Meica / González, Enrique M / Borrell, Asunción / Aguilar, Alex / Cardona, Luis

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 15147

    Abstract: Understanding the trophic niches of marine apex predators is necessary to understand interactions between species and to achieve sustainable, ecosystem-based fisheries management. Here, we review the stable carbon and nitrogen isotope ratios for biting ... ...

    Abstract Understanding the trophic niches of marine apex predators is necessary to understand interactions between species and to achieve sustainable, ecosystem-based fisheries management. Here, we review the stable carbon and nitrogen isotope ratios for biting marine mammals inhabiting the Atlantic Ocean to test the hypothesis that the relative position of each species within the isospace is rather invariant and that common and predictable patterns of resource partitioning exists because of constrains imposed by body size and skull morphology. Furthermore, we analyze in detail two species-rich communities to test the hypotheses that marine mammals are gape limited and that trophic position increases with gape size. The isotopic niches of species were highly consistent across regions and the topology of the community within the isospace was well conserved across the Atlantic Ocean. Furthermore, pinnipeds exhibited a much lower diversity of isotopic niches than odontocetes. Results also revealed body size as a poor predictor of the isotopic niche, a modest role of skull morphology in determining it, no evidence of gape limitation and little overlap in the isotopic niche of sympatric species. The overall evidence suggests limited trophic flexibility for most species and low ecological redundancy, which should be considered for ecosystem-based fisheries management.
    MeSH term(s) Animals ; Aquatic Organisms/physiology ; Atlantic Ocean ; Body Size ; Caniformia/anatomy & histology ; Caniformia/physiology ; Carbon Isotopes/analysis ; Cetacea/anatomy & histology ; Cetacea/physiology ; Ecosystem ; Feeding Behavior/physiology ; Fisheries/organization & administration ; Food Chain ; Nitrogen Isotopes/analysis ; Predatory Behavior/physiology ; Skull/anatomy & histology ; Sympatry/physiology
    Chemical Substances Carbon Isotopes ; Nitrogen Isotopes ; Nitrogen-15 ; Carbon-13 (FDJ0A8596D)
    Language English
    Publishing date 2021-07-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-94610-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Long-term assessment of trace elements in franciscana dolphins from the Río de la Plata estuary and adjacent Atlantic waters.

    Garcia-Garin, Odei / Borrell, Asunción / Vighi, Morgana / Aguilar, Alex / Valdivia, Meica / González, Enrique M / Drago, Massimiliano

    The Science of the total environment

    2021  Volume 788, Page(s) 147797

    Abstract: The estuary of Río de la Plata, in the eastern coast of South America, is a highly anthropized area that brings a high load of contaminants to the surrounding waters, which may have detrimental effects on the local marine fauna. The franciscana dolphin ( ... ...

    Abstract The estuary of Río de la Plata, in the eastern coast of South America, is a highly anthropized area that brings a high load of contaminants to the surrounding waters, which may have detrimental effects on the local marine fauna. The franciscana dolphin (Pontoporia blainvillei) is a small cetacean species endemic of the southwestern Atlantic Ocean listed as Vulnerable in the IUCN red list. In this study, we assessed the concentrations of 13 trace elements in bone samples from 100 franciscana dolphins that were found stranded dead or incidentally bycaught in the Río de la Plata and adjacent coast between 1953 and 2015. Elements were, in decreasing order of mean concentrations: Zn > Sr > Fe > Al > Mn > Cu > Pb > Cr > Ni > As > Hg > Cd > Se. The concentrations of Al, Cr and Fe were slightly higher in females than in males. The concentrations of As, Ni, and Pb significantly decreased with body length. Throughout the study period, the concentrations of Al, Cr, Cu, Fe, Mn and Ni significantly increased, while the concentrations of As, Pb and Sr significantly decreased. The increasing trends may be due to increased inputs from river discharges, the leather industry and petroleum refineries, while the decrease in Pb may be due to the ban in the use of this element as an additive in gasoline and as component of car batteries. This investigation supports the validity of analysing trace element in bone, a tissue available in scientific collections and museums, to retrospectively examine variation over long temporal scales and thus assess long-term trends in pollution.
    MeSH term(s) Animals ; Atlantic Ocean ; Dolphins ; Environmental Monitoring ; Estuaries ; Female ; Male ; Retrospective Studies ; South America ; Trace Elements/analysis ; Water Pollutants, Chemical/analysis
    Chemical Substances Trace Elements ; Water Pollutants, Chemical
    Language English
    Publishing date 2021-05-15
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2021.147797
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure.

    Drago, Massimiliano / Franco-Trecu, Valentina / Segura, Angel M / Valdivia, Meica / González, Enrique M / Aguilar, Alex / Cardona, Luis

    Scientific reports

    2018  Volume 8, Issue 1, Page(s) 15759

    Abstract: Here, we analyse changes throughout time in the isotopic niche of the Franciscana dolphin (Pontoporia blainvillei), the South American fur seal (Arctocephalus australis) and the South American sea lion (Otaria flavescens) from the Río de la Plata estuary ...

    Abstract Here, we analyse changes throughout time in the isotopic niche of the Franciscana dolphin (Pontoporia blainvillei), the South American fur seal (Arctocephalus australis) and the South American sea lion (Otaria flavescens) from the Río de la Plata estuary and adjacent Atlantic Ocean to test the hypothesis that fishing may modify the diet of small-gape predators by reducing the average size of prey. The overall evidence, from stable isotope and stomach contents analyses, reveals major changes in resource partitioning between the three predators considered, mainly because of an increased access of Franciscana dolphins to juvenile demersal fishes. These results are consistent with the changes in the length distribution of demersal fish species resulting from fishing and suggest that Franciscana dolphin has been the most benefited species of the three marine mammal species considered because of its intermediate mouth gape. In conclusion, the impact of fishing on marine mammals goes beyond the simple reduction in prey biomass and is highly dependent on the mouth gape of the species involved.
    MeSH term(s) Animals ; Aquatic Organisms/physiology ; Bayes Theorem ; Carbon Isotopes/metabolism ; Dolphins/physiology ; Female ; Fisheries ; Food Chain ; Fur Seals/physiology ; Geography ; Isotope Labeling ; Linear Models ; Male ; Mouth/physiology ; Nitrogen Isotopes/metabolism ; Predatory Behavior/physiology ; Sea Lions/physiology
    Chemical Substances Carbon Isotopes ; Nitrogen Isotopes
    Language English
    Publishing date 2018-10-25
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-018-34100-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Borrelia burgdorferi sensu lato infecting Ixodes auritulus ticks in Uruguay.

    Carvalho, Luis A / Maya, Leticia / Armua-Fernandez, María T / Félix, María L / Bazzano, Valentin / Barbieri, Amalia M / González, Enrique M / Lado, Paula / Colina, Rodney / Díaz, Pablo / Labruna, Marcelo B / Nava, Santiago / Venzal, José M

    Experimental & applied acarology

    2019  Volume 80, Issue 1, Page(s) 109–125

    Abstract: In the southern cone of South America different haplotypes of Borrelia burgdorferi sensu lato (Bbsl) have been detected in Ixodes spp. from Argentina, southern Brazil, Chile, and Uruguay. So far, Lyme borreliosis has not been diagnosed in Uruguay and the ...

    Abstract In the southern cone of South America different haplotypes of Borrelia burgdorferi sensu lato (Bbsl) have been detected in Ixodes spp. from Argentina, southern Brazil, Chile, and Uruguay. So far, Lyme borreliosis has not been diagnosed in Uruguay and the medical relevance of the genus Ixodes in South America is uncertain. However, the growing number of new genospecies of Bbsl in the southern cone region and the scarce information about its pathogenicity, reservoirs and vectors, highlights the importance of further studies about spirochetes present in Uruguay and the region. The aim of this study was to determine the presence of Bbsl in Ixodes auritulus ticks collected from birds and vegetation in two localities of southeastern Uruguay. In total 306 I. auritulus were collected from 392 passerine birds sampled and 1110 ticks were collected by flagging in vegetation. Nymphs and females were analyzed for Borrelia spp. by PCR targeting the flagellin (fla) gene and the rrfA-rrlB intergenic spacer region (IGS). The phylogenetic analysis of Borrelia spp. positive samples from passerine birds and vegetation revealed the presence of four fla haplotypes that form a clade within the Bbsl complex. They were closely related to isolates of Borrelia sp. detected in I. auritulus from Argentina and Canada.
    MeSH term(s) Animals ; Argentina ; Borrelia burgdorferi Group/isolation & purification ; Canada ; DNA, Bacterial/isolation & purification ; DNA, Intergenic/genetics ; Female ; Ixodes/microbiology ; Lyme Disease ; Passeriformes/parasitology ; Phylogeny ; Uruguay
    Chemical Substances DNA, Bacterial ; DNA, Intergenic
    Language English
    Publishing date 2019-12-05
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 11320-7
    ISSN 1572-9702 ; 0168-8162
    ISSN (online) 1572-9702
    ISSN 0168-8162
    DOI 10.1007/s10493-019-00435-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Multiple forms of hotspots of tetrapod biodiversity and the challenges of open-access data scarcity.

    Grattarola, Florencia / Martínez-Lanfranco, Juan A / Botto, Germán / Naya, Daniel E / Maneyro, Raúl / Mai, Patricia / Hernández, Daniel / Laufer, Gabriel / Ziegler, Lucía / González, Enrique M / da Rosa, Inés / Gobel, Noelia / González, Andrés / González, Javier / Rodales, Ana L / Pincheira-Donoso, Daniel

    Scientific reports

    2020  Volume 10, Issue 1, Page(s) 22045

    Abstract: The uneven spatial distribution of biodiversity is a defining feature of nature. In fact, the implementation of conservation actions both locally and globally has progressively been guided by the identification of biodiversity 'hotspots' (areas with ... ...

    Abstract The uneven spatial distribution of biodiversity is a defining feature of nature. In fact, the implementation of conservation actions both locally and globally has progressively been guided by the identification of biodiversity 'hotspots' (areas with exceptional biodiversity). However, different regions of the world differ drastically in the availability of fine-scale data on the diversity and distribution of species, thus limiting the potential to assess their local environmental priorities. Within South America-a megadiverse continent-Uruguay represents a peculiar area where multiple tropical and non-tropical eco-regions converge, creating highly heterogeneous ecosystems, but where the systematic quantification of biodiversity remains largely anecdotal. To investigate the constraints posed by the limited access to biodiversity data, we employ the most comprehensive database for tetrapod vertebrates in Uruguay (spanning 664 species) assembled to date, to identify hotspots of species-richness, endemism and threatened species for the first time. Our results reveal negligible spatial congruence among biodiversity hotspots, and that tetrapod sampling has historically concentrated in only a few areas. Collectively, our study provides a detailed account of the areas where urgent biodiversity monitoring efforts are needed to develop more accurate knowledge on biodiversity patterns, offering government and environmental bodies a critical scientific resource for future planning.
    MeSH term(s) Animals ; Biodiversity ; Conservation of Natural Resources ; Endangered Species ; Uruguay ; Vertebrates/physiology
    Language English
    Publishing date 2020-12-16
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-79074-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: High extinction risk and limited habitat connectivity of Muñoa's pampas cat, an endemic fetid of the Uruguayan Savanna ecoregion

    Tirelli, FLávia P. / Trigo, Tatianę C. / Queirolo, Diego / Kasper, Carlos Benhur / Bou, Nadia / Peters, Felipe / Mazim, Fábio D. / Martinez-Lanfranco, Juan Andrés / González, Enrique M. / Espinosa, Caroline / Favarini, Marina / Gonçalves da Silva, Lucas / Macdonald, David W. / Lucherini, Mauro / Eizirik, Eduardo

    Journal for nature conservation

    2021  Volume 62, Issue -, Page(s) 126009

    Language English
    Document type Article
    ZDB-ID 2077553-2
    ISSN 1617-1381
    Database Current Contents Nutrition, Environment, Agriculture

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  8. Article: Biodiversidata: An Open-Access Biodiversity Database for Uruguay.

    Grattarola, Florencia / Botto, Germán / da Rosa, Inés / Gobel, Noelia / González, Enrique M / González, Javier / Hernández, Daniel / Laufer, Gabriel / Maneyro, Raúl / Martínez-Lanfranco, Juan A / Naya, Daniel E / Rodales, Ana L / Ziegler, Lucía / Pincheira-Donoso, Daniel

    Biodiversity data journal

    2019  Volume 7, Page(s) e36226

    Abstract: Background: The continental and marine territories of Uruguay are characterised by a rich convergence of multiple biogeographic ecoregions of the Neotropics, making this country a peculiar biodiversity spot. However, despite the biological significance ... ...

    Abstract Background: The continental and marine territories of Uruguay are characterised by a rich convergence of multiple biogeographic ecoregions of the Neotropics, making this country a peculiar biodiversity spot. However, despite the biological significance of Uruguay for the South American subcontinent, the distribution of biodiversity patterns in this country remain poorly understood, given the severe gaps in available records of geographic species distributions. Currently, national biodiversity datasets are not openly available and, thus, a dominant proportion of the primary biodiversity data produced by researchers and institutions across Uruguay remains highly dispersed and difficult to access for the wider scientific and environmental community. In this paper, we aim to fill this gap by developing the first comprehensive, open-access database of biodiversity records for Uruguay (Biodiversidata), which is the result of a large-scale collaboration involving experts working across the entire range of taxonomic diversity found in the country.
    New information: As part of the first phase of Biodiversidata, we here present a comprehensive database of tetrapod occurrence records native from Uruguay, with the latest taxonomic updates. The database provides primary biodiversity data on extant Amphibia, Reptilia, Aves and Mammalia species recorded within the country. The total number of records collated is 69,380, spanning 673 species and it is available at the Zenodo repository: https://doi.org/10.5281/zenodo.2650169. This is the largest and most geographically and taxonomically comprehensive database of Uruguayan tetrapod species available to date and it represents the first open repository for the country.
    Language English
    Publishing date 2019-06-20
    Publishing country Bulgaria
    Document type Journal Article
    ZDB-ID 2736709-5
    ISSN 1314-2828
    ISSN 1314-2828
    DOI 10.3897/BDJ.7.e36226
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Borrelia burgdorferi sensu lato infecting ticks of the Ixodes ricinus complex in Uruguay: first report for the Southern Hemisphere.

    Barbieri, Amalia M / Venzal, José M / Marcili, Arlei / Almeida, Aliny P / González, Enrique M / Labruna, Marcelo B

    Vector borne and zoonotic diseases (Larchmont, N.Y.)

    2013  Volume 13, Issue 3, Page(s) 147–153

    Abstract: The Borrelia burgdorferi sensu lato (s.l.) group comprises genetically related spirochetes, mostly associated with tick species belonging to the Ixodes ricinus complex in the Northern Hemisphere. The present study evaluated borrelial infection in the ... ...

    Abstract The Borrelia burgdorferi sensu lato (s.l.) group comprises genetically related spirochetes, mostly associated with tick species belonging to the Ixodes ricinus complex in the Northern Hemisphere. The present study evaluated borrelial infection in the tick Ixodes pararicinus, which is the only representative species of the I. ricinus complex in Uruguay. A total of 137 I. pararicinus ticks were collected from deer, cattle, or vegetation in 2 Uruguayan Departments. A part of these ticks was tested directly by PCR targeting the borrelial gene flagellin (fla), whereas another part of the ticks was inoculated into Barbour-Stoenner-Kelly (BSK)-H medium in an attempt to isolate Borrelia. Overall, Borrelia infection was detected in 9 males and 1 nymphal tick pool. These ticks were found to be infected by unique fla haplotypes, which were shown through phylogenetic analysis to represent possibly 2 new B. burgdorferi s.l. genospecies, 1 associated with B. bissettii, the other phylogenetically closest to B. americana. These results were reinforced by PCR and DNA sequencing analyses of portions of 2 additional borrelial genes, rrfA-rrlB intergenic spacer region (IGS) and 16S rDNA (rrs). Weekly examinations of BSK cultures by dark-field microscopy failed to demonstrate live Borrelia through a 100-day incubation period. However, Borrelia DNA was detected by fla-PCR in culture media from 2 vials up to 90 days after inoculation. To the best of our knowledge, this is the first report of B. burgdorferi s.l. infecting ticks in South America.
    MeSH term(s) Animals ; Arachnid Vectors/microbiology ; Bacterial Proteins/genetics ; Base Sequence ; Borrelia burgdorferi Group/classification ; Borrelia burgdorferi Group/genetics ; Borrelia burgdorferi Group/isolation & purification ; Cattle ; DNA, Bacterial/chemistry ; DNA, Bacterial/genetics ; DNA, Intergenic/chemistry ; DNA, Intergenic/genetics ; DNA, Ribosomal/chemistry ; DNA, Ribosomal/genetics ; Deer ; Female ; Flagellin/genetics ; Humans ; Ixodes/microbiology ; Lyme Disease/epidemiology ; Lyme Disease/microbiology ; Male ; Molecular Sequence Data ; Nymph ; Phylogeny ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S/genetics ; Sequence Analysis, DNA ; Uruguay/epidemiology
    Chemical Substances Bacterial Proteins ; DNA, Bacterial ; DNA, Intergenic ; DNA, Ribosomal ; RNA, Ribosomal, 16S ; Flagellin (12777-81-0)
    Language English
    Publishing date 2013-03
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2047199-3
    ISSN 1557-7759 ; 1530-3667
    ISSN (online) 1557-7759
    ISSN 1530-3667
    DOI 10.1089/vbz.2012.1102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: On the Sigmodontinae radiation (Rodentia, Cricetidae): an appraisal of the phylogenetic position of Rhagomys.

    D'Elía, Guillermo / Luna, Lucia / González, Enrique M / Patterson, Bruce D

    Molecular phylogenetics and evolution

    2006  Volume 38, Issue 2, Page(s) 558–564

    MeSH term(s) Animals ; Eye Proteins/genetics ; Phylogeny ; Retinol-Binding Proteins/genetics ; Sigmodontinae/classification ; Sigmodontinae/genetics
    Chemical Substances Eye Proteins ; Retinol-Binding Proteins ; interstitial retinol-binding protein
    Language English
    Publishing date 2006-02
    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 33610-5
    ISSN 1095-9513 ; 1055-7903
    ISSN (online) 1095-9513
    ISSN 1055-7903
    DOI 10.1016/j.ympev.2005.08.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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