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  1. Article: A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Rio Jequitinhonha basin, Minas Gerais, Brazil, with comments on morphological similarities with Stethaprioninae species from headwater environments

    Teixeira, Tulio F. / Dutra, Guilherme M. / Penido, Iago S. / dos Santos, Sérgio A. / Pessali, Tiago C.

    Journal of fish biology. 2020 Jan., v. 96, no. 1

    2020  

    Abstract: A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well‐delimited conspicuous humeral blotch, rounded to ... ...

    Abstract A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well‐delimited conspicuous humeral blotch, rounded to vertically oval, restricted to the area dorsal to the lateral‐line row of scales, without a narrower downward extension, greatest body depth anterior to dorsal‐fin origin, bony processes in anal and pectoral‐fin rays of males and four teeth in the inner row of the premaxillary bone. The new species presents a set of morphological features shared by some species currently assigned to Hasemania, Myxiops and to the Astyanax scabripinnis complex. Some of these features are discussed.
    Keywords Astyanax scabripinnis ; Hyphessobrycon ; basins ; fins ; fish ; marshes ; new species ; water ; Brazil
    Language English
    Dates of publication 2020-01
    Size p. 140-153.
    Publishing place Blackwell Publishing Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.14198
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  2. Article ; Online: A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Rio Jequitinhonha basin, Minas Gerais, Brazil, with comments on morphological similarities with Stethaprioninae species from headwater environments.

    Teixeira, Tulio F / Dutra, Guilherme M / Penido, Iago S / Dos Santos, Sérgio A / Pessali, Tiago C

    Journal of fish biology

    2019  Volume 96, Issue 1, Page(s) 140–153

    Abstract: A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well-delimited conspicuous humeral blotch, rounded to ... ...

    Abstract A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well-delimited conspicuous humeral blotch, rounded to vertically oval, restricted to the area dorsal to the lateral-line row of scales, without a narrower downward extension, greatest body depth anterior to dorsal-fin origin, bony processes in anal and pectoral-fin rays of males and four teeth in the inner row of the premaxillary bone. The new species presents a set of morphological features shared by some species currently assigned to Hasemania, Myxiops and to the Astyanax scabripinnis complex. Some of these features are discussed.
    MeSH term(s) Animals ; Brazil ; Characidae/anatomy & histology ; Characidae/classification ; Classification ; Male ; Rivers
    Language English
    Publishing date 2019-11-25
    Publishing country England
    Document type Journal Article
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.14198
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Iterative taxonomy reveals a new species of Trichomycterus Valenciennes 1832 (Siluriformes, Trichomycteridae) widespread in Rio Doce basin: a pseudocryptic of T. immaculatus.

    Reis, Vinícius J C / Dos Santos, Sergio A / Britto, Marcelo R / de Assis Volpi, Thaís / de Pinna, Mário C C

    Journal of fish biology

    2020  Volume 97, Issue 6, Page(s) 1607–1623

    Abstract: This paper reports on a new species of Trichomycterus from the Rio Doce basin. Unusually for new taxa in the genus during the past few decades, the new species is not narrowly endemic but instead widely distributed in its major drainage, the Rio Doce. ... ...

    Abstract This paper reports on a new species of Trichomycterus from the Rio Doce basin. Unusually for new taxa in the genus during the past few decades, the new species is not narrowly endemic but instead widely distributed in its major drainage, the Rio Doce. The species has been collected and deposited in scientific collections for some years, but has been systematically misidentified as the more abundant Trichomycterus immaculatus or, to a lesser degree, as other morphologically similar species from south-eastern Brazil such as T. nigricans and T. pradensis. A combination of several morphological characteristics, such as vertebral number, pectoral-fin ray counts, pigmentation pattern and barcoding distance, were iteratively used and unambiguously distinguish the new species from all congeners. The present case reveals a pattern of diversity-discovery in which rare and narrowly endemic morphologically conspicuous species are discovered and described before visually inconspicuous taxa, even when the latter are more abundant and widespread. The morphological similarities among south-eastern Brazilian species with a uniform dark-grey color serve as basis for a brief discussion about the concepts of cryptic and pseudo-cryptic species in Trichomycterus and their consequences for potentially hidden diversity in the genus.
    MeSH term(s) Animal Distribution ; Animals ; Brazil ; Catfishes/anatomy & histology ; Catfishes/classification ; Pigmentation ; Rivers ; Species Specificity ; Spine/anatomy & histology
    Language English
    Publishing date 2020-10-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.14490
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  4. Article: Iterative taxonomy reveals a new species of Trichomycterus Valenciennes 1832 (Siluriformes, Trichomycteridae) widespread in Rio Doce basin: a pseudocryptic of T. immaculatus

    Reis, Vinícius J. C. / dos Santos, Sergio A. / Britto, Marcelo R. / de Assis Volpi, Thaís / de Pinna, Mário C. C.

    Journal of fish biology. 2020 Dec., v. 97, no. 6

    2020  

    Abstract: This paper reports on a new species of Trichomycterus from the Rio Doce basin. Unusually for new taxa in the genus during the past few decades, the new species is not narrowly endemic but instead widely distributed in its major drainage, the Rio Doce. ... ...

    Abstract This paper reports on a new species of Trichomycterus from the Rio Doce basin. Unusually for new taxa in the genus during the past few decades, the new species is not narrowly endemic but instead widely distributed in its major drainage, the Rio Doce. The species has been collected and deposited in scientific collections for some years, but has been systematically misidentified as the more abundant Trichomycterus immaculatus or, to a lesser degree, as other morphologically similar species from south‐eastern Brazil such as T. nigricans and T. pradensis. A combination of several morphological characteristics, such as vertebral number, pectoral‐fin ray counts, pigmentation pattern and barcoding distance, were iteratively used and unambiguously distinguish the new species from all congeners. The present case reveals a pattern of diversity‐discovery in which rare and narrowly endemic morphologically conspicuous species are discovered and described before visually inconspicuous taxa, even when the latter are more abundant and widespread. The morphological similarities among south‐eastern Brazilian species with a uniform dark‐grey color serve as basis for a brief discussion about the concepts of cryptic and pseudo‐cryptic species in Trichomycterus and their consequences for potentially hidden diversity in the genus.
    Keywords Trichomycterus ; barcoding ; basins ; color ; drainage ; fins ; fish ; new species ; pigmentation ; Brazil
    Language English
    Dates of publication 2020-12
    Size p. 1607-1623.
    Publishing place Blackwell Publishing Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.14490
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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  5. Article ; Online: Streptozotocin-Induced Maternal Hyperglycemia Increases the Expression of Antioxidant Enzymes and Mast Cell Number in Offspring Rat Ventral Prostate.

    Camargo, Ana C L / Dos Santos, Sérgio A A / Rinaldi, Jaqueline C / Constantino, Flavia B / Colombelli, Ketlin T / Scarano, Wellerson R / Felisbino, Sérgio L / Justulin, Luis A

    Anatomical record (Hoboken, N.J. : 2007)

    2017  Volume 300, Issue 2, Page(s) 291–299

    Abstract: Gestational diabetes mellitus (GDM) has increased in recent years. Although the cellular and molecular mechanisms involved in GDM-increased risk factors to offspring remained poorly understood, some studies suggested an association between an increase in ...

    Abstract Gestational diabetes mellitus (GDM) has increased in recent years. Although the cellular and molecular mechanisms involved in GDM-increased risk factors to offspring remained poorly understood, some studies suggested an association between an increase in oxidative stress induced by maternal hyperglycemia and complications for both mothers and newborns. Here, we investigated the impact of maternal hyperglycemia followed by maternal insulin replacement during lactation on the expression of antioxidant enzymes and mast cell number in offspring ventral prostate (VP) at puberty. Pregnant rats were divided into three groups: control (CT); streptozotocin-induced maternal hyperglycemia (MH); and MH plus maternal insulin replacement during lactation (MHI). Male offspring were euthanized at postnatal day (PND) 60 and the VP was removed and processed for histology and Western blotting analyses. Maternal hyperglycemia delayed prostate maturation, and increased mast cell number catalase (CAT), superoxide dismutase (SOD), glutatione-s-transferase (GST-pi), and cyclooxygenase-2 (Cox-2) expression in the offspring of hyperglycemic dams. Maternal insulin replacement restored VP structure, mast cell number and antioxidant protein expression, except for Cox-2, which remained higher in the MHI group. Thus, an increase in oxidative stress induced by intrauterine hyperglycemia impacts prostate development and maturation, which persists until puberty. The overall improvement of maternal metabolism after insulin administration contributes to the restoration of prostate antioxidant enzymes and secretory function. Taken together, our results highlighted that imbalanced physiological maternal-fetal interaction contributes to the impairment of reproductive performance of the offspring from diabetic mothers. Anat Rec, 300:291-299, 2017. © 2016 Wiley Periodicals, Inc.
    MeSH term(s) Animals ; Blood Glucose/metabolism ; Cell Count ; Cyclooxygenase 2/metabolism ; Diabetes Mellitus, Experimental/drug therapy ; Diabetes Mellitus, Experimental/enzymology ; Diabetes Mellitus, Experimental/metabolism ; Diabetes Mellitus, Experimental/pathology ; Diabetes, Gestational/drug therapy ; Diabetes, Gestational/enzymology ; Diabetes, Gestational/metabolism ; Diabetes, Gestational/pathology ; Female ; Hypoglycemic Agents/pharmacology ; Hypoglycemic Agents/therapeutic use ; Insulin/pharmacology ; Insulin/therapeutic use ; Male ; Mast Cells/drug effects ; Mast Cells/metabolism ; Mast Cells/pathology ; Oxidative Stress/drug effects ; Oxidative Stress/physiology ; Pregnancy ; Prenatal Exposure Delayed Effects/enzymology ; Prenatal Exposure Delayed Effects/metabolism ; Prenatal Exposure Delayed Effects/pathology ; Prostate/drug effects ; Prostate/enzymology ; Prostate/metabolism ; Prostate/pathology ; Rats ; Rats, Wistar
    Chemical Substances Blood Glucose ; Hypoglycemic Agents ; Insulin ; Cyclooxygenase 2 (EC 1.14.99.1)
    Language English
    Publishing date 2017-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2269667-2
    ISSN 1932-8494 ; 1932-8486
    ISSN (online) 1932-8494
    ISSN 1932-8486
    DOI 10.1002/ar.23510
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Ub I Zs.65: Show issues Location:
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
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