LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 533

Search options

  1. Article ; Online: Temperament traits and glucocorticoid metabolites in tropical screech owl (Megascops choliba)

    Barbosa-Moyano, Heriberto / Oliveira, Cláudio Alvarenga de

    Applied Animal Behaviour Science. 2023 Mar., v. 260 p.105866-

    2023  

    Abstract: Animals constantly respond to stimuli from their surroundings, showing individual behavioral and endocrine differences upon perceived challenging and/or threatening stimuli. The temperament of 13 captive tropical screech owls (Megascops choliba) was ... ...

    Abstract Animals constantly respond to stimuli from their surroundings, showing individual behavioral and endocrine differences upon perceived challenging and/or threatening stimuli. The temperament of 13 captive tropical screech owls (Megascops choliba) was defined by performing three challenge tests (novel space, taxidermist predator and trapping) to identify inter-individual differences and their possible relationship with the production of glucocorticoid metabolites (GCM). Feces samples of each bird were taken pre-and-post predator challenge to quantify GCM concentration by means of enzymatic immunoassay (EIA). The intensity of 13 adjectives selected to describe the owls' temperament was determined by three judges during behavioral testing. Only 3 adjectives (passive, vulnerable, and attentive) that showed strong inter-test and intra-individual correlation coefficients were considered. These adjectives were later grouped in a single dimension named "shyness", enabling establishment of individual scores. The temperament of the owls showed correlation to post-predator challenge GCM levels (ρ = 0.79; p < 0.001). However, no significant differences were found in GCM levels before and after predator challenge. Our results both confirm that nocturnal behavior raptorial birds show positive relation between shy temper and adrenal response, and offer the non-invasive herein implemented methods for establishment of new hypotheses that will assess welfare of species kept under human care.
    Keywords Strigiformes ; animal behavior ; birds of prey ; feces ; glucocorticoids ; humans ; immunoassays ; metabolites ; nocturnal activity ; temperament ; Allostasis ; Stress ; Predator test
    Language English
    Dates of publication 2023-03
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 591645-8
    ISSN 0168-1591
    ISSN 0168-1591
    DOI 10.1016/j.applanim.2023.105866
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  2. Article: Glucocorticoid metabolites in an

    Barbosa-Moyano, Heriberto / Sobral, Gisela / de Oliveira, Claudio Alvarenga

    Conservation physiology

    2023  Volume 11, Issue 1, Page(s) coad016

    Abstract: Glucocorticoids mediate physiological processes to obtain energy, presenting daily variation in basal levels that may be related to behavioural activity pattern. Identification of plasticity in the secretion of these hormones is essential to understand ... ...

    Abstract Glucocorticoids mediate physiological processes to obtain energy, presenting daily variation in basal levels that may be related to behavioural activity pattern. Identification of plasticity in the secretion of these hormones is essential to understand their effects on physiology and behaviour of wild birds and, therefore, their success in their natural or artificial environment. Serial endocrine evaluations are facilitated by implementing non-invasive methodologies that minimize possible effects of manipulation on the animal's physiological variables. However, non-invasive endocrine-behavioural studies in nocturnal birds, such as owls, are immature. The present work aimed to validate an enzyme immunoassay (EIA) to quantify glucocorticoid metabolites (MGC) in
    Language English
    Publishing date 2023-04-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 2721508-8
    ISSN 2051-1434
    ISSN 2051-1434
    DOI 10.1093/conphys/coad016
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Phylogenomics, evolution of trophic traits and divergence times of hemiodontid fishes (Ostariophysi: Characiformes).

    Nogueira, Acácio Freitas / Oliveira, Claudio / Langeani, Francisco / Netto-Ferreira, André L

    Molecular phylogenetics and evolution

    2023  Volume 186, Page(s) 107864

    Abstract: The South American characiform family Hemiodontidae comprises five genera and 34 species. The family lacks comprehensive phylogenetic hypotheses resolving its species relationships. The studies that addressed these questions exhibited a narrow taxon ... ...

    Abstract The South American characiform family Hemiodontidae comprises five genera and 34 species. The family lacks comprehensive phylogenetic hypotheses resolving its species relationships. The studies that addressed these questions exhibited a narrow taxon sampling or used single-locus markers. Herein we surveyed hundreds of ultraconserved elements (UCEs) loci to provide the first molecular phylogenetic hypothesis and divergence time estimates for hemiodontids encompassing all its genera and most species (27 of the 34 valid species). We also tracked the history of the protractile upper jaw in the genera Argonectes and Bivibranchia across the recovered phylogenies through ancestral state reconstruction. Our results corroborate the monophyly of Hemiodontidae and the genera Argonectes and Bivibranchia in all phylogenetic methods with maximum clade support. The genera Anodus and Hemiodus were not monophyletic because Anodus elongatus was sister to the monotypic Micromischodus instead of A. orinocensis, and H. immaculatus did not form a clade with its other congeners, but instead was sister to the clade including Anodus and Micromischodus. All remaining species of Hemiodus were placed together into a monophyletic group, where they were arranged into four major subclades. The relationship in the family is summarised as: (Bivibranchia, (Argonectes, ((H. immaculatus, (Anodus, Micromischodus)), Hemiodus clade))), in discordance with the morphological phylogeny that placed all genera monophyletic and resolved the family as: ((Anodus, Micromischodus), (Hemiodus, (Argonectes, Bivibranchia))). The origin of Hemiodontidae was estimated from the Late Cretaceous to the Middle Paleogene, with the mean age in the Paleocene, while the origin of most hemiodontid genera except Bivibranchia occurred in the Miocene. Unordered parsimony and likelihood reconstruction indicates that Argonectes and Bivibranchia developed their protractile upper jaw independently.
    MeSH term(s) Animals ; Phylogeny ; Characiformes ; Likelihood Functions ; Bayes Theorem
    Language English
    Publishing date 2023-06-19
    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.2023.107864
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Validation of enzyme immunoassays for quantifying sex steroid hormones in tropical screech owls (Megascops choliba).

    Barbosa-Moyano, Heriberto / Zacariotti, Rogério Loesch / de Oliveira, Claudio Alvarenga

    General and comparative endocrinology

    2023  Volume 345, Page(s) 114386

    Abstract: Androgens and estrogens are steroid hormones that regulate reproductive processes in both males and females. Monitoring plasma levels of these steroids or their metabolites present in feces, offers diagnostic support for assessing the reproductive status ...

    Abstract Androgens and estrogens are steroid hormones that regulate reproductive processes in both males and females. Monitoring plasma levels of these steroids or their metabolites present in feces, offers diagnostic support for assessing the reproductive status of animals. Immunoassays are commonly used methods for quantifying these hormones, but their protocols require species-specific validation to ensure reliability. The objective of this study was to perform analytically and biologically validation of enzyme immunoassay (EIA) kits for measuring testosterone (T), estradiol (E
    MeSH term(s) Animals ; Female ; Male ; Androgens ; Estradiol/metabolism ; Estrogens ; Estrone ; Feces ; Gonadal Steroid Hormones/metabolism ; Immunoenzyme Techniques ; Reproducibility of Results ; Strigiformes ; Testosterone/metabolism
    Chemical Substances Androgens ; Estradiol (4TI98Z838E) ; Estrogens ; Estrone (2DI9HA706A) ; Gonadal Steroid Hormones ; Testosterone (3XMK78S47O)
    Language English
    Publishing date 2023-09-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1851-x
    ISSN 1095-6840 ; 0016-6480
    ISSN (online) 1095-6840
    ISSN 0016-6480
    DOI 10.1016/j.ygcen.2023.114386
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Phylogenomics, evolution of trophic traits and divergence times of hemiodontid fishes (Ostariophysi: Characiformes)

    Nogueira, Acácio Freitas / Oliveira, Cláudio / Langeani, Francisco / Netto-Ferreira, André L.

    Molecular Phylogenetics and Evolution. 2023 Sept., v. 186 p.107864-

    2023  

    Abstract: The South American characiform family Hemiodontidae comprises five genera and 34 species. The family lacks comprehensive phylogenetic hypotheses resolving its species relationships. The studies that addressed these questions exhibited a narrow taxon ... ...

    Abstract The South American characiform family Hemiodontidae comprises five genera and 34 species. The family lacks comprehensive phylogenetic hypotheses resolving its species relationships. The studies that addressed these questions exhibited a narrow taxon sampling or used single-locus markers. Herein we surveyed hundreds of ultraconserved elements (UCEs) loci to provide the first molecular phylogenetic hypothesis and divergence time estimates for hemiodontids encompassing all its genera and most species (27 of the 34 valid species). We also tracked the history of the protractile upper jaw in the genera Argonectes and Bivibranchia across the recovered phylogenies through ancestral state reconstruction. Our results corroborate the monophyly of Hemiodontidae and the genera Argonectes and Bivibranchia in all phylogenetic methods with maximum clade support. The genera Anodus and Hemiodus were not monophyletic because Anodus elongatus was sister to the monotypic Micromischodus instead of A. orinocensis, and H. immaculatus did not form a clade with its other congeners, but instead was sister to the clade including Anodus and Micromischodus. All remaining species of Hemiodus were placed together into a monophyletic group, where they were arranged into four major subclades. The relationship in the family is summarised as: (Bivibranchia, (Argonectes, ((H. immaculatus, (Anodus, Micromischodus)), Hemiodus clade))), in discordance with the morphological phylogeny that placed all genera monophyletic and resolved the family as: ((Anodus, Micromischodus), (Hemiodus, (Argonectes, Bivibranchia))). The origin of Hemiodontidae was estimated from the Late Cretaceous to the Middle Paleogene, with the mean age in the Paleocene, while the origin of most hemiodontid genera except Bivibranchia occurred in the Miocene. Unordered parsimony and likelihood reconstruction indicates that Argonectes and Bivibranchia developed their protractile upper jaw independently.
    Keywords Hemiodus ; Late Cretaceous epoch ; Miocene epoch ; Paleocene epoch ; monophyly ; Halftooths ; Hemiodontidae ; Neotropical fishes ; Phylogeny ; South America ; Ultraconserved elements
    Language English
    Dates of publication 2023-09
    Publishing place Elsevier Inc.
    Document type Article ; Online
    ZDB-ID 33610-5
    ISSN 1095-9513 ; 1055-7903
    ISSN (online) 1095-9513
    ISSN 1055-7903
    DOI 10.1016/j.ympev.2023.107864
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article ; Online: Are atypical lymphocytes a new predictive factor in the development of COVID-19?

    Oliveira, Claudio Bruno Silva de / Andrade, Joelma Maria de Araújo / Oliveira, Jonas Ivan Nobre

    Revista da Sociedade Brasileira de Medicina Tropical

    2022  Volume 55, Page(s) e0154

    MeSH term(s) COVID-19 ; Humans ; Lymphocytes ; SARS-CoV-2
    Language English
    Publishing date 2022-09-19
    Publishing country Brazil
    Document type Letter
    ZDB-ID 1038126-0
    ISSN 1678-9849 ; 0037-8682
    ISSN (online) 1678-9849
    ISSN 0037-8682
    DOI 10.1590/0037-8682-0154-2022
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: A new species of spiny Rineloricaria (Siluriformes: Loricariidae) from the Rio Paraba do Sul basin and costal rivers from Rio de Janeiro State.

    Silva, Guilherme Jos DA Costa / Silva, Gabriel DE Souza DA Costa E / Oliveira, Claudio

    Zootaxa

    2022  Volume 5175, Issue 2, Page(s) 285–292

    Abstract: Although the genus Rineloricaria is widely distributed in the Neotropical region, its species usually occupy single drainages with high habitat fidelity. Rineloricaria species show evident sexual dimorphism with hypertrophied odontodes in sexually mature ...

    Abstract Although the genus Rineloricaria is widely distributed in the Neotropical region, its species usually occupy single drainages with high habitat fidelity. Rineloricaria species show evident sexual dimorphism with hypertrophied odontodes in sexually mature males. Here, we describe a new species of Rineloricaria present in the Rio Paraiba do Sul basin and coastal rivers in Rio de Janeiro State. The new species has extreme sexual dimorphism making possible to differentiate it from all congeners. The new species can also be separated from other sympatric species by morphometric characteristics and dermal plates pattern.
    MeSH term(s) Animals ; Brazil ; Catfishes ; Male ; Platyhelminths ; Rivers ; Sex Characteristics
    Language English
    Publishing date 2022-08-16
    Publishing country New Zealand
    Document type Journal Article
    ISSN 1175-5334
    ISSN (online) 1175-5334
    DOI 10.11646/zootaxa.5175.2.6
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Phylogenomic analysis of the Neotropical fish subfamily Characinae using ultraconserved elements (Teleostei: Characidae).

    Souza, Camila S / Melo, Bruno F / Mattox, George M T / Oliveira, Claudio

    Molecular phylogenetics and evolution

    2022  Volume 171, Page(s) 107462

    Abstract: Characinae is one of the most species-rich subfamilies of Characidae and holds special taxonomic importance because it includes Charax, type-genus of Characidae and Characiformes. Currently, the monophyly and the hypotheses of intergeneric and ... ...

    Abstract Characinae is one of the most species-rich subfamilies of Characidae and holds special taxonomic importance because it includes Charax, type-genus of Characidae and Characiformes. Currently, the monophyly and the hypotheses of intergeneric and interspecific relationships of Characinae are based on a few morphological and molecular studies but all with low species coverage. Given their diversity, taxonomic importance, and the lack of a taxon-dense phylogeny, we sought to buttress the systematic understanding of Characinae collecting DNA sequence data from ultraconserved elements (UCEs) of the genome from 98 specimens covering 57 species (61%) plus 17 characiforms as outgroups. We used maximum likelihood, Bayesian inference, and coalescent-based species tree approaches and the resulting phylogeny with 1,300 UCE loci (586,785 characters) reinforced the monophyly of the subfamily as well as of six genera: Acestrocephalus, Charax, Cynopotamus, Galeocharax, Phenacogaster, and Roeboides. The phylogeny provides a hypothesis of intergeneric and interspecific relationships for the subfamily with Phenacogaster sister to all genera, and Acanthocharax sister to Cynopotamini (Cynopotamus (Acestrocephalus Galeocharax)) and Characini (Charax Roeboides). We propose a new tribe Acanthocharacini to allocate Acanthocharax, two subclades for Phenacogaster, two for Cynopotamus, three for Charax, and reinforced the four subclades for Roeboides previously identified by morphological studies. Additionally, we generated a time-calibrated phylogeny for Characinae that suggested an initial diversification during the Miocene at around 19 million years ago and discussed historical biogeographic events for major subclades. The results obtained here will contribute to the development of further research on the evolutionary processes modulating species diversification in Characinae.
    MeSH term(s) Animals ; Bayes Theorem ; Biological Evolution ; Characidae ; Characiformes ; Phylogeny ; Sequence Analysis, DNA
    Language English
    Publishing date 2022-03-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 33610-5
    ISSN 1095-9513 ; 1055-7903
    ISSN (online) 1095-9513
    ISSN 1055-7903
    DOI 10.1016/j.ympev.2022.107462
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Pediatric sepsis research in low- and middle-income countries: overcoming challenges.

    Souza, Daniela Carla de / Oliveira, Cláudio Flauzino de / Lanziotti, Vanessa Soares

    Revista Brasileira de terapia intensiva

    2022  Volume 33, Issue 3, Page(s) 341–345

    Title translation Pesquisa em sepse pediátrica em países de baixa e média renda: superando desafios.
    MeSH term(s) Child ; Developing Countries ; Humans ; Income ; Sepsis/epidemiology ; Sepsis/therapy
    Language English
    Publishing date 2022-02-02
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 2732162-9
    ISSN 1982-4335 ; 1982-4335
    ISSN (online) 1982-4335
    ISSN 1982-4335
    DOI 10.5935/0103-507X.20210062
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Moenkhausia andrica (Characiformes: Characidae): a new species from the rio Tapajós basin, Brazil, with minute fin hooklets in females.

    Reia, Lais / Oliveira, Claudio / Benine, Ricardo C

    Journal of fish biology

    2021  Volume 99, Issue 4, Page(s) 1380–1392

    Abstract: In this study, a new species of Moenkhausia is described from the upper rio Juruena, rio Tapajós basin, Brazil. It is distinguished from all congeners by the presence of minute bony hooks in all fins of both mature females and males and combination of a ... ...

    Abstract In this study, a new species of Moenkhausia is described from the upper rio Juruena, rio Tapajós basin, Brazil. It is distinguished from all congeners by the presence of minute bony hooks in all fins of both mature females and males and combination of a prepelvic region flattened, dorsal portion of the humeral blotch extending two scales horizontally and vertically, lateral line with 28-32 scales, five scale series above and below lateral line; circumpeduncular scales 13-14, anal-fin rays 16-19 and dorsal portion of eyes blue in live specimens. The new species is also supported by high divergence in the mitochondrial gene cytochrome c oxidase subunit I (COI). The presence of minute fin bony hooks in both females and males, population variations and late development of the lateral line in Moenkhausia andrica are discussed.
    MeSH term(s) Animal Fins ; Animals ; Brazil ; Characidae/genetics ; Characiformes/genetics ; Female ; Male ; Rivers
    Language English
    Publishing date 2021-08-17
    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.14847
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top