Papers by Luiz Flamarion B. Oliveira
Notas sobre Mamíferos Sudamericanos
Os morcegos hematófagos se caracterizam por uma complexa estrutura social e características anatô... more Os morcegos hematófagos se caracterizam por uma complexa estrutura social e características anatômicas e fisiológicas particulares. São apresentadas evidências do uso potencial do tatu-canastra (Priodontes maximus) no espectro alimentar do morcego-vampiro-comum Desmodus rotundus. As observações foram realizadas no Parque Sesc Serra Azul, município de Rosário Oeste, Mato Grosso, Brasil, usando armadilhas fotográficas. Embora os morcegos hematófagos predem espécies nativas na natureza, os registros dessa atividade alimentar são raros. O uso de armadilhas fotográficas tem se tornado uma ferramenta eficiente para obter dados ecológicos sobre diversos mamíferos e permite avaliar as interações e associações entre as espécies de forma não invasiva.
PubMed, 1999
Chromosomal analysis of Kunsia tomentosus showed a karyotype with 2n = 44, constituted by 21 pair... more Chromosomal analysis of Kunsia tomentosus showed a karyotype with 2n = 44, constituted by 21 pairs of acrocentric autosomes. The X chromosome was a median acrocentric, between pairs 3 and 4 in size, and the Y chromosome was a small acrocentric (between pairs 19 and 20). Five pairs with nucleolus organizer regions were located at the short arms. C-banding showed blocks of constitutive heterochromatin occurring in the centromeres of all autosomes and of the X chromosome. The Y chromosome was entirely heterochromatic. In order to identify possible homologies, karyotypes of Kunsia and Scapteromys, the phyletically related taxa, were compared. No autosome shared by either genus was found by G-band comparisons. The C-band patterns and those produced by Alu I, Mbo I, Rsa I and Hae III restriction endonucleases were also different. The results of FISH indicated a different composition of the telomeric regions of the chromosomes of both taxa, since in Scapteromys the probes hybridized in both telomeres, and in Kunsia this hybridization only occurred in one of the telomeres. These differences also occurred in the localization and number of nucleolus organizer regions.
Arquivos do Museu Nacional (Rio de Janeiro), 2005
Journal of Mammalogy, May 24, 1983
LARSON, JS, AND SJ KNAPP. 1971. Sexual di-morphism in beaver neutrophils. J. Mamm., 52: 212-215. ... more LARSON, JS, AND SJ KNAPP. 1971. Sexual di-morphism in beaver neutrophils. J. Mamm., 52: 212-215. MOLINI, J. J., RA LANCIA, J. BISHIR, AND HE HODGDON. 1981. A stochastic model of beaver population growth. Pp. 1215-1245, in Worldwide Furbearer Conference ...
Journal of Mammalogy, Jun 1, 2007
Calomys Waterhouse, 1837, is one of the most speciose genera of the Phyllotini tribe of the South... more Calomys Waterhouse, 1837, is one of the most speciose genera of the Phyllotini tribe of the South American sigmodontine rodents. Distributed predominately in southern South America, the genus has been proposed to have originated in the central Andes with further differentiation as subsequent occupations of the lowlands of the continent occurred. In this study, 30 newly obtained sequences of the cytochrome-b gene from specimens collected in Brazil were analyzed in conjunction with data available in GenBank in an attempt to discern the dispersion patterns of this genus in the South American lowlands. The analyses support a scenario where a phyllotine lineage appeared in the Andes and later separated into 2 larger clades. Members of 1 clade remained in the highlands (C. musculinus, C. lepidus, and C. sorellus), experiencing some local differentiation. Members of the 2nd clade invaded the lowlands of South America, especially nonforested biomes, where they underwent intense differentiation resulting in species with wide distributions in the continent. In the lowland clade, the ''callosus-venustus'' group is more derived, is characterized by a larger body size, and has a broad distribution; differentiation of this group was probably accompanied by some reduction in chromosomal diploid numbers.
Figure 22. Ordinary least-square (OLS) regressions between standardized contrasts in jaw muscle o... more Figure 22. Ordinary least-square (OLS) regressions between standardized contrasts in jaw muscle optimization and the positivized standardized contrasts in skull size. Plots indicate the nodes and lineages of the phylogeny. Nodes connecting different cat lineages are indicated by the age of cladogenesis (Myr), according the cladogram of Johnson et al. (2006) presented in Figure 1.
Figure 18. Morphofunctional relationships between the members of the leopard cat lineage. Species... more Figure 18. Morphofunctional relationships between the members of the leopard cat lineage. Species' images are digitally adjusted and scaled according to the skull of Prionailurus viverrinus, and are positioned over the centroids of their principal component analysis (PCA) scores. Arrows indicate bite force and neck robustness (abscissa), and jaw muscle optimization (ordinate). Acronyms are defined in the text.
Figure 16. Morphofunctional relationships between the members of the Ocelot lineage. Species'... more Figure 16. Morphofunctional relationships between the members of the Ocelot lineage. Species' images are digitally adjusted and scaled according to the skull of Leopardus pardalis, and are positioned over the centroids of their principal component analysis (PCA) scores. Arrows indicate bite force and neck robustness (abscissa), and jaw muscle optimization (ordinate). Acronyms are defined in the text.
Figure 5. Morphological relationships between the members of the Puma lineage. Species' image... more Figure 5. Morphological relationships between the members of the Puma lineage. Species' images are digitally adjusted and scaled according to the skull of Puma concolor, and are positioned over the centroids of their principal component analysis (PCA) scores. Arrows indicate the enlargement of the skull measurements related to each axis. Acronyms are defined in the text.
Figure 9. Morphological relationships between the members of the leopard cat lineage. Species'... more Figure 9. Morphological relationships between the members of the leopard cat lineage. Species' images are digitally adjusted and scaled according to the skull of Prionailurus viverrinus, and are positioned over the centroids of their principal component analysis (PCA) scores. Arrows indicate the enlargement of the skull measurements related to each axis. Acronyms are defined in the text.
Figure 3. Distribution of the 34 cat species, according to their scores from the morphological pr... more Figure 3. Distribution of the 34 cat species, according to their scores from the morphological principal component analysis (PCA). Plots represent species' centroids based on bivariate means of the scores. Arrows indicate the enlargement of the skull measurements related to each axis. Acronyms are defined in the text.
Figure 8. Morphological relationships between the members of the domestic cat lineage. Species... more Figure 8. Morphological relationships between the members of the domestic cat lineage. Species' images are digitally adjusted and scaled according the skull of Felis chaus, and are positioned over the centroids of their principal component analysis (PCA) scores. Arrows indicate the enlargement of the skull measurements related to each axis. Acronyms are defined in the text.
Figure 6. Morphological relationships between the members of the Lynx lineage. Species' image... more Figure 6. Morphological relationships between the members of the Lynx lineage. Species' images are digitally adjusted and scaled according the skull of Lynx lynx, and are positioned over the centroids of their principal component analysis (PCA) scores. Arrows indicate the enlargement of the skull measurements related to each axis. Acronyms are defined in the text.
Figure 2. Diagram showing the 20 skull measurements used in the analysis (see Appendix 1 for defi... more Figure 2. Diagram showing the 20 skull measurements used in the analysis (see Appendix 1 for definitions).
PloS one, 2016
Conservation of Neotropical game species must take into account the livelihood and food security ... more Conservation of Neotropical game species must take into account the livelihood and food security needs of local human populations. Hunting management decisions should therefore rely on abundance and distribution data that are as representative as possible of true population sizes and dynamics. We simultaneously applied a commonly used encounter-based method and an infrequently used sign-based method to estimate hunted vertebrate abundance in a 48,000-km2 indigenous landscape in southern Guyana. Diurnal direct encounter data collected during three years along 216, four-kilometer -long transects consistently under-detected many diurnal and nocturnal mammal species readily detected through sign. Of 32 species analyzed, 31 were detected by both methods; however, encounters did not detect one and under-detected another 12 of the most heavily hunted species relative to sign, while sign under-detected 12 never or rarely collected species relative to encounters. The six most important game ...
Context: Spatial variation in large herbivore populations can be highly affected by the availabil... more Context: Spatial variation in large herbivore populations can be highly affected by the availability of resources (bottom-up) but modulated by the presence of predators (top-down). Studying the relative influence of these forces has been a major topic of interest in ecological and conservation research, while it has also been challenging to sample large herbivores. Objective: i) Explore the use of spatiotemporally replicated drone-based counts analysed with N-mixture models to estimate abundance of large herbivores. ii) Evaluate the relative influence of bottom-up (forage and water) and top-down (jaguars) processes on the local abundance of the threatened marsh deer.Methods: We conducted spatiotemporally replicated drone flights in the dry season of Pantanal wetland (Brazil) and imagery was reviewed by either one or two observers. We fitted counts using N-mixture models (for single and double observer protocols) and modelled local abundance in relation to vegetation greenness, dista...
Ecology, 2020
Mammalian carnivores are considered a key group in maintaining ecological health and can indicate... more Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non‐detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non‐governmental organizations, and private consultants. Data were collected using several methods including camera trapping, muse...
Ecology, 2020
Biological invasion is one of the main threats to native biodiversity. For a species to become in... more Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal‐central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and t...
Mitochondrial DNA Part A, 2019
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Papers by Luiz Flamarion B. Oliveira