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Jorge Morales - One of the best experts on this subject based on the ideXlab platform.
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Functional and Systematic Implications of the Postcranial Anatomy of a Late Miocene Feline (Carnivora, Felidae) from Batallones-1 (Madrid, Spain)
Journal of Mammalian Evolution, 2017Co-Authors: Manuel J Salesa, Gema Siliceo, Sophie Peigné, Mauricio Antón, Jorge MoralesAbstract:The Spanish late Miocene locality of Batallones-1 yielded a rich sample of large carnivorans, including saber-toothed felids, amphicyonids, and ailurids, but also of smaller species, with the small cats being especially interesting. Two species are known from Batallones-1, one of them the size of a wildcat, Felis silvestris, the other one the size of a caracal, Caracal caracal. The former is represented by skulls, mandibles, and postcranial bones, whereas the latter is known from a collection of long bones. Both species are less abundant than their larger relatives, the saber-toothed felids Promegantereon ogygia and Machairodus aphanistus, but the available sample allows us to assess body proportions and adaptations of the smallest species, and to propose a new genus for this feline, LeptoFelis vallesiensis. Its limb bones are remarkably gracile compared to fossils of the earlier genera Pseudaelurus, Miopanthera, and StyrioFelis, and comparable in cursorial adaptations to the wildcat, very different from extant arboreal cats. While middle Miocene felids were likely semi-arboreal forest dwellers, L. vallesiensis would be mostly terrestrial, climbing essentially for protection. This indicates an adaptation to a mosaic of habitats, including relatively open terrain, and may be related to the climatic changes detected in Eurasia during the late Miocene.
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systematics and phylogeny of the small felines carnivora felidae from the late miocene of europe a new species of felinae from the vallesian of batallones mn 10 madrid spain
Journal of Systematic Palaeontology, 2012Co-Authors: Manuel J Salesa, Jorge Morales, Mauricio Antón, Sophie PeignéAbstract:The Spanish fossil localities of Batallones-1 and Batallones-3 are two Vallesian (Late Miocene) natural traps known for their high concentration of carnivoran mammals. These include amphicyonids, ailurids, mustelids, ursids, hyaenids, machairodont felids, and two species of small-bodied felines, one the size of an European wildcat, Felis sylvestris, and the other the size of a caracal, Caracal caracal. Although these felines are much less abundant at the sites than their larger relatives, the sabre-toothed felids, the available samples from Batallones-1 and Batallones-3 are rich; they include postcranial elements, skulls and mandibles of the smaller species, while the larger feline species is solely known from postcranial elements recorded at Batallones-1. The small feline from Batallones-1 and Batallones-3, although showing similarities with the Turolian felines, is more related to the Middle Miocene genus StyrioFelis Kretzoi, 1929, and thus we propose for it the new species name StyrioFelis vallesiensis...
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caracal depereti nov sp y Felis aff silvestris felidae mammalia del plioceno inferior de layna soria espana
Estudios Geologicos-madrid, 2003Co-Authors: Jorge Morales, Dolores Soria, Plinio Montoya, Benigno Perez, Manuel J SalesaAbstract:Two species of small-medium size felids, Felis aff. silvestris and Caracal depereti nov. sp., have been identified from the Pliocene karstic locality of Layna (Soria, Spain). Caracal depereti nov. sp. shows close affinities with Caracal issiodorensis, species that has been traditionally classified in the genus Lynx. This new interpretation implies that there are no evidences of lynxes in the Pliocene of Westem Europe, and probably this consideration can be applicable to other Eurasiatic localities where Lynx issiodorensis has been determined.
Sophie Peigné - One of the best experts on this subject based on the ideXlab platform.
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Functional and Systematic Implications of the Postcranial Anatomy of a Late Miocene Feline (Carnivora, Felidae) from Batallones-1 (Madrid, Spain)
Journal of Mammalian Evolution, 2017Co-Authors: Manuel J Salesa, Gema Siliceo, Sophie Peigné, Mauricio Antón, Jorge MoralesAbstract:The Spanish late Miocene locality of Batallones-1 yielded a rich sample of large carnivorans, including saber-toothed felids, amphicyonids, and ailurids, but also of smaller species, with the small cats being especially interesting. Two species are known from Batallones-1, one of them the size of a wildcat, Felis silvestris, the other one the size of a caracal, Caracal caracal. The former is represented by skulls, mandibles, and postcranial bones, whereas the latter is known from a collection of long bones. Both species are less abundant than their larger relatives, the saber-toothed felids Promegantereon ogygia and Machairodus aphanistus, but the available sample allows us to assess body proportions and adaptations of the smallest species, and to propose a new genus for this feline, LeptoFelis vallesiensis. Its limb bones are remarkably gracile compared to fossils of the earlier genera Pseudaelurus, Miopanthera, and StyrioFelis, and comparable in cursorial adaptations to the wildcat, very different from extant arboreal cats. While middle Miocene felids were likely semi-arboreal forest dwellers, L. vallesiensis would be mostly terrestrial, climbing essentially for protection. This indicates an adaptation to a mosaic of habitats, including relatively open terrain, and may be related to the climatic changes detected in Eurasia during the late Miocene.
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systematics and phylogeny of the small felines carnivora felidae from the late miocene of europe a new species of felinae from the vallesian of batallones mn 10 madrid spain
Journal of Systematic Palaeontology, 2012Co-Authors: Manuel J Salesa, Jorge Morales, Mauricio Antón, Sophie PeignéAbstract:The Spanish fossil localities of Batallones-1 and Batallones-3 are two Vallesian (Late Miocene) natural traps known for their high concentration of carnivoran mammals. These include amphicyonids, ailurids, mustelids, ursids, hyaenids, machairodont felids, and two species of small-bodied felines, one the size of an European wildcat, Felis sylvestris, and the other the size of a caracal, Caracal caracal. Although these felines are much less abundant at the sites than their larger relatives, the sabre-toothed felids, the available samples from Batallones-1 and Batallones-3 are rich; they include postcranial elements, skulls and mandibles of the smaller species, while the larger feline species is solely known from postcranial elements recorded at Batallones-1. The small feline from Batallones-1 and Batallones-3, although showing similarities with the Turolian felines, is more related to the Middle Miocene genus StyrioFelis Kretzoi, 1929, and thus we propose for it the new species name StyrioFelis vallesiensis...
J P Dubey - One of the best experts on this subject based on the ideXlab platform.
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bobcats lynx rufus are natural definitive host of besnoitia darlingi
Veterinary Parasitology, 2017Co-Authors: S K Verma, Camila K Cerqueiracezar, F H A Murata, Matthew J Lovallo, Benjamin M Rosenthal, J P DubeyAbstract:Abstract Bovine besnoitiosis, caused by Besnoitia besnoiti, is an economically important disease of cattle in many countries but its transmission remains a mystery. Wild felids are suspected to be its definitive hosts. The domestic cat (Felis catus) is known experimental definitive host for Besnoitia species of rodents. Here, we report for Besnoitia darlingi the first identification of a natural definitive host, the bobcat (Lynx rufus). Oocysts resembling Toxoplasma gondii (unsporulated; 10.9 ± 0.8 × 12.1 ± 0.2 μm; n = 5) were detected microscopically in the feces of two of 25 free ranging wild bobcats from Mississippi, USA. After detailed investigation, we identified these oocysts as B. darlingi and not T. gondii. The IFN-γ gene knockout (KO) mice fed oocysts from bobcats died of acute besnoitiosis and tachyzoites were found in their tissues. Oocysts were also mildly pathogenic to outbred Swiss Webster mice (SW) (Mus musculus). The SW mice fed oocysts became ill but generally survived and developed characteristic thick-walled Besnoitia tissue cysts in their tongue and heart muscles and brains. Two laboratory-raised domestic cats (Felis catus) excreted B. darlingi oocysts after ingesting murine tissues infected with bobcat-derived oocysts. The parasite was successfully cultivated in African green monkey kidney fibroblast cells (CV-1 cell line) seeded with infected murine tissue homogenate. The multilocus PCR-DNA sequencing (18S rDNA, 28S rDNA, and ITS-1) from culture-derived tachyzoites confirmed the parasite as B. darlingi. Our results suggest that bobcats may be an important link in the sylvatic cycle of Besnoitia species and bioassay or molecular tests are needed to differentiate Toxoplasma gondii-like oocysts in feces of felids, both domestic and wild cats.
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molecular and morphologic characterization of sarcocystis Felis apicomplexa sarcocystidae in south american wild felids from brazil
Veterinary Parasitology, 2016Co-Authors: J P Dubey, S K Verma, W A Canonfranco, Natalia Lopezorozco, Alexandre Uarth Christoff, Camila Schlieper De Castilho, Flavio Antonio Pacheco De Araujo, Rodrigo Martins Soares, Solange Maria GennariAbstract:Wild felids are thought to share parasites with domestic cats. However, little is known of the coccidian parasites of wild felids. We investigated the presence of Sarcocystis spp. in tissues of 6 species of 90 Neotropical small felids killed in road accidents in the state of Rio Grande do Sul, Brazil by using microscopic and molecular techniques. Formalin-fixed tissues from 28 felids were examined, and Sarcocystis Felis-like sarcocysts were detected in 4 wild cats (2 Puma yagouaroundi and 2 Leopardus guttulus). By transmission electron microscopy, sarcocysts from a P. yagouaroundi were identical to S. Felis from domestic cats in the USA. Direct sequencing of PCR amplicons resulted the unambiguous sequences of the ITS-1 region from 18 of the 31 PCR positive wild cats; 5 sequences from each P. yagouaroundi, and Leopardus geoffroyi, 4 sequences from L. guttulus, and 2 sequences from each Leopardus wiedii, and Leopardus colocolo. Sequences analysis of ITS-1 region revealed the highest identiy (97-99%) with that of previously describe isolates of S. Felis from domestic cats in the USA and identified them as S. Felis. Tissues of 1 Leopardus pardalis tested by PCR and histology were negative. The phylogenetic relationship indicated that S. Felis is quite different to species which employ opossums as their definitive host. This is the first report of S. Felis infection in small wild felids from Brazil.
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experimental transmission of cystoisospora Felis like coccidium from bobcat lynx rufus to the domestic cat Felis catus
Veterinary Parasitology, 2015Co-Authors: J P Dubey, S K Verma, A E Houk, Rafael Calerobernal, J G Humphreys, David S LindsayAbstract:Cystoisospora Felis is an ubiquitous coccidian of cats. The domestic cat (Felis catus) is its definitive host and several mammalian and avian species are its optional intermediate/transport hosts. Nothing is known if it is transmissible to wild felids. In the present study C. Felis-like oocysts were found in two naturally infected bobcats (Lynx rufus) from Pennsylvania. To study transmission of C. Felis-like parasite from bobcats to domestic cats, sporulated oocysts of C. Felis-like from one bobcat were orally inoculated into interferon gamma gene knockout (KO) mice, and 56 days later tissues of KO mice were fed to two coccidian-free cats; two littermate cats were uninoculated controls. The inoculated cats and controls were euthanized five and seven days later, and their small intestines were studied histologically. One inoculated cat excreted C. Felis-like oocysts seven days post inoculation (p.i.) and was immediately euthanized. Mature schizonts, mature male and female gamonts, and unsporulated oocysts were found in the lamina propria of small intestine; these stages were morphologically similar to C. Felis of domestic cats. No parasites were seen in histological sections of small intestines of the remaining three cats. The experiment was terminated at seven days p.i. (minimum prepatent period for C. Felis) to minimize spread of this highly infectious parasite to other cats. Although oocysts of the parasite in bobcats were morphologically similar to C. Felis of domestic cats, the endogenous stages differed in their location of development. The bobcat derived parasite was located in the lamina propria of ileum whereas all endogenous stages of C. Felis of domestic cats are always located in enterocytes of intestinal epithelium. Characterization of DNA isolated from C. Felis-like oocysts from the donor bobcat revealed that sequences of the ITS1 region was only 87% similar to the ITS1 region of C. Felis from domestic cats. These results indicate that the parasite in bobcat is likely different than C. Felis of cats.
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seroprevalence of toxoplasma gondii in white tailed deer odocoileus virginianus and free roaming cats Felis catus across a suburban to urban gradient in northeastern ohio
Ecohealth, 2015Co-Authors: Gregory A Ballash, J P Dubey, O C H Kwok, Abigail B Shoben, Terry Robison, Tom Kraft, Patricia M DennisAbstract:Felids serve as the definitive host of Toxoplasma gondii contaminating environments with oocysts. White-tailed deer (WTD; Odocoileus virginianus) are used as sentinel species for contaminated environments as well as a potential source for human foodborne infection with T. gondii. Here we determine the seroprevalence of T. gondii in a WTD and felid population, and examine those risk factors that increase exposure to the parasite. Serum samples from 444 WTD and 200 free-roaming cats (Felis catus) from urban and suburban reservations were tested for T. gondii antibodies using the modified agglutination test (MAT, cut-off 1:25). Antibodies to T. gondii were found in 261 (58.8%) of 444 WTD, with 164 (66.1%) of 248 from urban and 97 (49.5%) of 196 from suburban regions. Significant risk factors for seroprevalence included increasing age (P < 0.0001), reservation type (P < 0.0001), and household densities within reservation (P < 0.0001). Antibodies to T. gondii were found in 103 (51.5%) of 200 cats, with seroprevalences of 79 (51%) of 155 and 24 (53.3%) of 45 from areas surrounding urban and suburban reservations, respectively. Seroprevalence did not differ by age, gender, or reservation among the cats’ sample. Results indicate WTD are exposed by horizontal transmission, and this occurs more frequently in urban environments. The difference between urban and suburban cat densities is the most likely the reason for an increased seroprevalence in urban WTD. These data have public health implications for individuals living near or visiting urban areas where outdoor cats are abundant as well as those individuals who may consume WTD venison.
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seroprevalence of antibodies to toxoplasma gondii in gordon s wildcat Felis silvestris gordoni in the middle east
Journal of Parasitology, 2008Co-Authors: An Pas, J P DubeyAbstract:Most species of felids tested have been found to be the definitive host for Toxoplasma gondii. Gordon's wildcat (Felis silvestris gordoni) is a threatened species found in the United Arab Emirates (UAE) and Oman. Antibodies to T. gondii were found in all 29 captive and 2 of 7 wild-caught F. s. gordoni in UAE examined by the modified agglutination test (MAT). Titers were 1:100 in 1, 1:200 in 5, 1:400 in 6, 1:800 in 10, 1:1,600 in 5, and 1:3,200 or higher in 4. None of these cats was ill, despite exhibiting high antibody titers. This is the first report of T. gondii infection in this host.
Manuel J Salesa - One of the best experts on this subject based on the ideXlab platform.
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Functional and Systematic Implications of the Postcranial Anatomy of a Late Miocene Feline (Carnivora, Felidae) from Batallones-1 (Madrid, Spain)
Journal of Mammalian Evolution, 2017Co-Authors: Manuel J Salesa, Gema Siliceo, Sophie Peigné, Mauricio Antón, Jorge MoralesAbstract:The Spanish late Miocene locality of Batallones-1 yielded a rich sample of large carnivorans, including saber-toothed felids, amphicyonids, and ailurids, but also of smaller species, with the small cats being especially interesting. Two species are known from Batallones-1, one of them the size of a wildcat, Felis silvestris, the other one the size of a caracal, Caracal caracal. The former is represented by skulls, mandibles, and postcranial bones, whereas the latter is known from a collection of long bones. Both species are less abundant than their larger relatives, the saber-toothed felids Promegantereon ogygia and Machairodus aphanistus, but the available sample allows us to assess body proportions and adaptations of the smallest species, and to propose a new genus for this feline, LeptoFelis vallesiensis. Its limb bones are remarkably gracile compared to fossils of the earlier genera Pseudaelurus, Miopanthera, and StyrioFelis, and comparable in cursorial adaptations to the wildcat, very different from extant arboreal cats. While middle Miocene felids were likely semi-arboreal forest dwellers, L. vallesiensis would be mostly terrestrial, climbing essentially for protection. This indicates an adaptation to a mosaic of habitats, including relatively open terrain, and may be related to the climatic changes detected in Eurasia during the late Miocene.
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systematics and phylogeny of the small felines carnivora felidae from the late miocene of europe a new species of felinae from the vallesian of batallones mn 10 madrid spain
Journal of Systematic Palaeontology, 2012Co-Authors: Manuel J Salesa, Jorge Morales, Mauricio Antón, Sophie PeignéAbstract:The Spanish fossil localities of Batallones-1 and Batallones-3 are two Vallesian (Late Miocene) natural traps known for their high concentration of carnivoran mammals. These include amphicyonids, ailurids, mustelids, ursids, hyaenids, machairodont felids, and two species of small-bodied felines, one the size of an European wildcat, Felis sylvestris, and the other the size of a caracal, Caracal caracal. Although these felines are much less abundant at the sites than their larger relatives, the sabre-toothed felids, the available samples from Batallones-1 and Batallones-3 are rich; they include postcranial elements, skulls and mandibles of the smaller species, while the larger feline species is solely known from postcranial elements recorded at Batallones-1. The small feline from Batallones-1 and Batallones-3, although showing similarities with the Turolian felines, is more related to the Middle Miocene genus StyrioFelis Kretzoi, 1929, and thus we propose for it the new species name StyrioFelis vallesiensis...
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caracal depereti nov sp y Felis aff silvestris felidae mammalia del plioceno inferior de layna soria espana
Estudios Geologicos-madrid, 2003Co-Authors: Jorge Morales, Dolores Soria, Plinio Montoya, Benigno Perez, Manuel J SalesaAbstract:Two species of small-medium size felids, Felis aff. silvestris and Caracal depereti nov. sp., have been identified from the Pliocene karstic locality of Layna (Soria, Spain). Caracal depereti nov. sp. shows close affinities with Caracal issiodorensis, species that has been traditionally classified in the genus Lynx. This new interpretation implies that there are no evidences of lynxes in the Pliocene of Westem Europe, and probably this consideration can be applicable to other Eurasiatic localities where Lynx issiodorensis has been determined.
Mauricio Antón - One of the best experts on this subject based on the ideXlab platform.
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Functional and Systematic Implications of the Postcranial Anatomy of a Late Miocene Feline (Carnivora, Felidae) from Batallones-1 (Madrid, Spain)
Journal of Mammalian Evolution, 2017Co-Authors: Manuel J Salesa, Gema Siliceo, Sophie Peigné, Mauricio Antón, Jorge MoralesAbstract:The Spanish late Miocene locality of Batallones-1 yielded a rich sample of large carnivorans, including saber-toothed felids, amphicyonids, and ailurids, but also of smaller species, with the small cats being especially interesting. Two species are known from Batallones-1, one of them the size of a wildcat, Felis silvestris, the other one the size of a caracal, Caracal caracal. The former is represented by skulls, mandibles, and postcranial bones, whereas the latter is known from a collection of long bones. Both species are less abundant than their larger relatives, the saber-toothed felids Promegantereon ogygia and Machairodus aphanistus, but the available sample allows us to assess body proportions and adaptations of the smallest species, and to propose a new genus for this feline, LeptoFelis vallesiensis. Its limb bones are remarkably gracile compared to fossils of the earlier genera Pseudaelurus, Miopanthera, and StyrioFelis, and comparable in cursorial adaptations to the wildcat, very different from extant arboreal cats. While middle Miocene felids were likely semi-arboreal forest dwellers, L. vallesiensis would be mostly terrestrial, climbing essentially for protection. This indicates an adaptation to a mosaic of habitats, including relatively open terrain, and may be related to the climatic changes detected in Eurasia during the late Miocene.
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systematics and phylogeny of the small felines carnivora felidae from the late miocene of europe a new species of felinae from the vallesian of batallones mn 10 madrid spain
Journal of Systematic Palaeontology, 2012Co-Authors: Manuel J Salesa, Jorge Morales, Mauricio Antón, Sophie PeignéAbstract:The Spanish fossil localities of Batallones-1 and Batallones-3 are two Vallesian (Late Miocene) natural traps known for their high concentration of carnivoran mammals. These include amphicyonids, ailurids, mustelids, ursids, hyaenids, machairodont felids, and two species of small-bodied felines, one the size of an European wildcat, Felis sylvestris, and the other the size of a caracal, Caracal caracal. Although these felines are much less abundant at the sites than their larger relatives, the sabre-toothed felids, the available samples from Batallones-1 and Batallones-3 are rich; they include postcranial elements, skulls and mandibles of the smaller species, while the larger feline species is solely known from postcranial elements recorded at Batallones-1. The small feline from Batallones-1 and Batallones-3, although showing similarities with the Turolian felines, is more related to the Middle Miocene genus StyrioFelis Kretzoi, 1929, and thus we propose for it the new species name StyrioFelis vallesiensis...
