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Eduardo Martins Venticinque - One of the best experts on this subject based on the ideXlab platform.
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activity patterns of the threatened northern tiger cat Leopardus tigrinus and its potential prey in a brazilian dry tropical forest
Mammalian Biology, 2018Co-Authors: Paulo Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Fonseca, Eduardo Martins VenticinqueAbstract:Activity patterns of mammals are shaped by abiotic pressures and biotic interactions. Here, we describe the daily activity pattern of the northern tiger cat Leopardus tigrinus in semiarid drylands, an Endangered species in Brazil, and test its overlap with those of potential prey, small mammals and ground birds. Also, we test the effect of the lunar phase on the synchrony of the predator-prey interactions. Camera trap data were obtained from ten areas in the Caatinga of the Rio Grande do Norte state, totalling a sampling effort of 7271 camera-days. The northern tiger cat activity pattern was primarily nocturnal, although it shows a considerable crepuscular activity and some daytime activity. Results suggest a high activity overlap with small mammals, that were strongly nocturnal, but a low activity overlap with ground birds that were diurnal and crepuscular. The lunar cycle did not affect the activity of the northern tiger cat, but changed the activity of small mammals, which were most active during new moon phase. A feeding study performed in another geographic region of the Caatinga suggests, in contrast, that northern tiger cats should have a higher activity during the day or during the crepuscular period. Our results suggest that the stressful conditions of the day period in the Caatinga drylands, the virtual absence of nocturnal top predators in our study area, and the higher availability of small mammals during the night are propably shaping the activity pattern of the northern tiger cat. Our study contributes to enlarge our knowledge on the behavioural ecology of a threatened small cat providing one of the first insight on its predator-prey interactions.
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Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:Understanding the distribution and habitat preference of threatened species is essential for their conservation. We conducted the first systematic camera trap survey of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands (Brazil) and tested how its occupancy and detectability patterns are affected by environmental and anthropogenic factors. Species detection-non-detection data, obtained by 7263 camera-days distributed throughout 187 sampling sites on ten Caatinga landscapes, were used to evaluate species detectability and occupancy according to ten environmental and anthropogenic predictors. We built seven detection models and 30 hierarchical occupancy models that have been ranked based on the Akaike Information Criterion. The estimated average occupancy of 0.46 was 38% higher than the naïve occupancy rate (0.34). Species occupancy was higher in locations with greater forest cover and at greater distance to agrarian settlements. Hunting and persecution of northern tiger cats by residents and a possible reduction of their natural prey by hunting may explain the result. On the contrary, more forested environments may represent higher-quality habitats providing greater availability of prey and shelters and protection against anthropogenic threats and extreme temperatures. These results improve the understanding of the ecology of a threatened and poorly known small cat, and they can guide conservation actions such as the creation of dense forest protected areas and provide information for mitigating human-carnivore conflict.
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Erratum to: Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:The original version of this article, unfortunately, contained an error. In the “Results” section of the above article originally published with an error. Originally reading “...significant lack of fit (test statistic = 144.83, p = 0.29)”, this should instead have read “...significant lack of fit “( c ̂ = 0.95 $$ \widehat{\boldsymbol{c}}=\mathbf{0.95} $$ ; Test statistic = 144.83, p = 0.29)”.
Paulo Henrique Marinho - One of the best experts on this subject based on the ideXlab platform.
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Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:Understanding the distribution and habitat preference of threatened species is essential for their conservation. We conducted the first systematic camera trap survey of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands (Brazil) and tested how its occupancy and detectability patterns are affected by environmental and anthropogenic factors. Species detection-non-detection data, obtained by 7263 camera-days distributed throughout 187 sampling sites on ten Caatinga landscapes, were used to evaluate species detectability and occupancy according to ten environmental and anthropogenic predictors. We built seven detection models and 30 hierarchical occupancy models that have been ranked based on the Akaike Information Criterion. The estimated average occupancy of 0.46 was 38% higher than the naïve occupancy rate (0.34). Species occupancy was higher in locations with greater forest cover and at greater distance to agrarian settlements. Hunting and persecution of northern tiger cats by residents and a possible reduction of their natural prey by hunting may explain the result. On the contrary, more forested environments may represent higher-quality habitats providing greater availability of prey and shelters and protection against anthropogenic threats and extreme temperatures. These results improve the understanding of the ecology of a threatened and poorly known small cat, and they can guide conservation actions such as the creation of dense forest protected areas and provide information for mitigating human-carnivore conflict.
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Erratum to: Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:The original version of this article, unfortunately, contained an error. In the “Results” section of the above article originally published with an error. Originally reading “...significant lack of fit (test statistic = 144.83, p = 0.29)”, this should instead have read “...significant lack of fit “( c ̂ = 0.95 $$ \widehat{\boldsymbol{c}}=\mathbf{0.95} $$ ; Test statistic = 144.83, p = 0.29)”.
Moisés Gallas - One of the best experts on this subject based on the ideXlab platform.
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Toxocara cati (Schrank, 1788) (Nematoda, Ascarididae) in different wild feline species in Brazil: new host records
Biotemas, 2013Co-Authors: Moisés Gallas, Eliane Fraga Da SilveiraAbstract:This is the first detailed description of Toxocara cati parasitizing felines in South America. Seventeen run over wild felines ( Leopardus colocolo , Leopardus geoffroyi , Leopardus tigrinus , and Puma yagouaroundi ) were collected from different towns in the State of Rio Grande do Sul, Brazil. The morphometry of males and females allowed the identification of specimens as being T. cati . The helminths were found in the stomach and intestine of hosts with prevalences of 66.6% in L. colocolo , L. geoffroyi , and L. tigrinus ; and 60% in P. yagouaroundi . The ecological parameters were calculated for each host and L. colocolo had the highest infection intensity (22.5 helminths/ host). This is the first report of T. cati parasitizing four wild felines species in southern Brazil, besides a new record of this parasite for two host species.
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Pathologies of Oligacanthorhynchus pardalis (Acanthocephala, Oligacanthorhynchidae) in Leopardus tigrinus (Carnivora, Felidae) in Southern Brazil
Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia , 2012Co-Authors: Moisés Gallas, Eliane Fraga Da SilveraAbstract:In Brazil, Oligacanthorhynchus pardalis (Westrumb, 1821) Schmidt, 1972 has been observed in five species of wild felines. In the present study, five roadkilled oncillas (Leopardus tigrinus Schreber, 1775) were collected in the State of Rio Grande do Sul, Brazil. Chronic lesions caused by O. pardalis were observed in the small intestine of one of the specimens. Histological examination identified a well-defined leukocyte infiltration and an area of collagenous fibrosis. Only males parasites (n = 5) were found, with a prevalence of 20%. The life cycle of Oligacanthorhynchus species is poorly known, although arthropods may be their intermediate hosts. The low prevalence encountered may be related to the small number of hosts examined, and the reduced ingestion of arthropods infected by larvae of O. pardalis. This is the first report of O. pardalis parasitizing L. tigrinus in the Brazilian state of Rio Grande do Sul.
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mesocestoides sp eucestoda mesocestoididae parasitizing four species of wild felines in southern brazil
Revista Brasileira De Parasitologia Veterinaria, 2011Co-Authors: Moisés Gallas, Eliane Fraga Da SilveiraAbstract:Leopardus colocolo, Leopardus geoffroyi, Leopardus tigrinus and Puma yagouaroundi are wild feline species endangered mainly due to habitat destruction and vehicle run overs. Seventeen felines hit on the roads were collected in Southern Brazil and examined for parasites. Cestodes were identified as Mesocestoides sp. The parasites were found in the small intestine of the hosts with a prevalence of 66.7% (L. colocolo and L. tigrinus), 60% (P. yagouaroundi) and 50% (L. geoffroyi). Rodents and lizards were found in the stomach contents and they possibly were intermediate hosts of Mesocestoides sp. This is the first report of Mesocestoides sp. in wild felines in Brazil.
Daniel Bezerra - One of the best experts on this subject based on the ideXlab platform.
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activity patterns of the threatened northern tiger cat Leopardus tigrinus and its potential prey in a brazilian dry tropical forest
Mammalian Biology, 2018Co-Authors: Paulo Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Fonseca, Eduardo Martins VenticinqueAbstract:Activity patterns of mammals are shaped by abiotic pressures and biotic interactions. Here, we describe the daily activity pattern of the northern tiger cat Leopardus tigrinus in semiarid drylands, an Endangered species in Brazil, and test its overlap with those of potential prey, small mammals and ground birds. Also, we test the effect of the lunar phase on the synchrony of the predator-prey interactions. Camera trap data were obtained from ten areas in the Caatinga of the Rio Grande do Norte state, totalling a sampling effort of 7271 camera-days. The northern tiger cat activity pattern was primarily nocturnal, although it shows a considerable crepuscular activity and some daytime activity. Results suggest a high activity overlap with small mammals, that were strongly nocturnal, but a low activity overlap with ground birds that were diurnal and crepuscular. The lunar cycle did not affect the activity of the northern tiger cat, but changed the activity of small mammals, which were most active during new moon phase. A feeding study performed in another geographic region of the Caatinga suggests, in contrast, that northern tiger cats should have a higher activity during the day or during the crepuscular period. Our results suggest that the stressful conditions of the day period in the Caatinga drylands, the virtual absence of nocturnal top predators in our study area, and the higher availability of small mammals during the night are propably shaping the activity pattern of the northern tiger cat. Our study contributes to enlarge our knowledge on the behavioural ecology of a threatened small cat providing one of the first insight on its predator-prey interactions.
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Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:Understanding the distribution and habitat preference of threatened species is essential for their conservation. We conducted the first systematic camera trap survey of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands (Brazil) and tested how its occupancy and detectability patterns are affected by environmental and anthropogenic factors. Species detection-non-detection data, obtained by 7263 camera-days distributed throughout 187 sampling sites on ten Caatinga landscapes, were used to evaluate species detectability and occupancy according to ten environmental and anthropogenic predictors. We built seven detection models and 30 hierarchical occupancy models that have been ranked based on the Akaike Information Criterion. The estimated average occupancy of 0.46 was 38% higher than the naïve occupancy rate (0.34). Species occupancy was higher in locations with greater forest cover and at greater distance to agrarian settlements. Hunting and persecution of northern tiger cats by residents and a possible reduction of their natural prey by hunting may explain the result. On the contrary, more forested environments may represent higher-quality habitats providing greater availability of prey and shelters and protection against anthropogenic threats and extreme temperatures. These results improve the understanding of the ecology of a threatened and poorly known small cat, and they can guide conservation actions such as the creation of dense forest protected areas and provide information for mitigating human-carnivore conflict.
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Erratum to: Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:The original version of this article, unfortunately, contained an error. In the “Results” section of the above article originally published with an error. Originally reading “...significant lack of fit (test statistic = 144.83, p = 0.29)”, this should instead have read “...significant lack of fit “( c ̂ = 0.95 $$ \widehat{\boldsymbol{c}}=\mathbf{0.95} $$ ; Test statistic = 144.83, p = 0.29)”.
Marina Antongiovanni - One of the best experts on this subject based on the ideXlab platform.
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activity patterns of the threatened northern tiger cat Leopardus tigrinus and its potential prey in a brazilian dry tropical forest
Mammalian Biology, 2018Co-Authors: Paulo Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Fonseca, Eduardo Martins VenticinqueAbstract:Activity patterns of mammals are shaped by abiotic pressures and biotic interactions. Here, we describe the daily activity pattern of the northern tiger cat Leopardus tigrinus in semiarid drylands, an Endangered species in Brazil, and test its overlap with those of potential prey, small mammals and ground birds. Also, we test the effect of the lunar phase on the synchrony of the predator-prey interactions. Camera trap data were obtained from ten areas in the Caatinga of the Rio Grande do Norte state, totalling a sampling effort of 7271 camera-days. The northern tiger cat activity pattern was primarily nocturnal, although it shows a considerable crepuscular activity and some daytime activity. Results suggest a high activity overlap with small mammals, that were strongly nocturnal, but a low activity overlap with ground birds that were diurnal and crepuscular. The lunar cycle did not affect the activity of the northern tiger cat, but changed the activity of small mammals, which were most active during new moon phase. A feeding study performed in another geographic region of the Caatinga suggests, in contrast, that northern tiger cats should have a higher activity during the day or during the crepuscular period. Our results suggest that the stressful conditions of the day period in the Caatinga drylands, the virtual absence of nocturnal top predators in our study area, and the higher availability of small mammals during the night are propably shaping the activity pattern of the northern tiger cat. Our study contributes to enlarge our knowledge on the behavioural ecology of a threatened small cat providing one of the first insight on its predator-prey interactions.
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Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:Understanding the distribution and habitat preference of threatened species is essential for their conservation. We conducted the first systematic camera trap survey of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands (Brazil) and tested how its occupancy and detectability patterns are affected by environmental and anthropogenic factors. Species detection-non-detection data, obtained by 7263 camera-days distributed throughout 187 sampling sites on ten Caatinga landscapes, were used to evaluate species detectability and occupancy according to ten environmental and anthropogenic predictors. We built seven detection models and 30 hierarchical occupancy models that have been ranked based on the Akaike Information Criterion. The estimated average occupancy of 0.46 was 38% higher than the naïve occupancy rate (0.34). Species occupancy was higher in locations with greater forest cover and at greater distance to agrarian settlements. Hunting and persecution of northern tiger cats by residents and a possible reduction of their natural prey by hunting may explain the result. On the contrary, more forested environments may represent higher-quality habitats providing greater availability of prey and shelters and protection against anthropogenic threats and extreme temperatures. These results improve the understanding of the ecology of a threatened and poorly known small cat, and they can guide conservation actions such as the creation of dense forest protected areas and provide information for mitigating human-carnivore conflict.
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Erratum to: Estimating occupancy of the Vulnerable northern tiger cat Leopardus tigrinus in Caatinga drylands
Mammal Research, 2018Co-Authors: Paulo Henrique Marinho, Daniel Bezerra, Marina Antongiovanni, Carlos Roberto Fonseca, Eduardo Martins VenticinqueAbstract:The original version of this article, unfortunately, contained an error. In the “Results” section of the above article originally published with an error. Originally reading “...significant lack of fit (test statistic = 144.83, p = 0.29)”, this should instead have read “...significant lack of fit “( c ̂ = 0.95 $$ \widehat{\boldsymbol{c}}=\mathbf{0.95} $$ ; Test statistic = 144.83, p = 0.29)”.