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Eduardo Berriatua - One of the best experts on this subject based on the ideXlab platform.
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Epidemiological study of ticks collected from the northern Tamandua (Tamandua mexicana) and a literature review of ticks of Myrmecophagidae anteaters.
Ticks and tick-borne diseases, 2019Co-Authors: Claudia I. Muñoz-garcía, Sokani Sánchez-montes, Claudia Villanueva-garcía, Evangelina Romero-callejas, Carlos Martínez-carrasco, Emilio Rendón-franco, Carmen Guzmán-cornejo, Roxana Acosta-gutiérrez, Hilda Diaz-lopez, Eduardo BerriatuaAbstract:Abstract The family Myrmecophagidae contains three anteater species: Tamandua mexicana (Saussure, 1860), Tamandua tetradactyla (Linnaeus, 1758) and Myrmecophaga tridactyla (Linnaeus, 1758). These American anteater species currently face many conservation threats, among which road traffic accidents stand out. Parasitic studies on this family are scarce, and some of them include records of ectoparasites. Specifically for northern Tamandua (T. mexicana), there is a lack of studies at population level. The objectives of the present research were to carry out an epidemiological study of tick species and its abundance on road-killed northern anteater specimens and, moreover, to perform a literature review of ticks collected from anteaters of Myrmecophagidae family. Five tick species were identified, including four Amblyomma spp. and Rhipicephalus sanguineus sensu lato, on 23 road-killed anteaters. Tick infestation prevalence was 43% (10/23), with a median tick infestation intensity of 3.5 per anteater (interquartile range 1–13.7). The bibliographic review highlighted the existence of twenty-nine ixodid species recorded on the three anteater species from 14 countries, mainly Brazil. The most common tick species on the Myrmecophagidae family are Amblyomma nodosum, A. calcaratum, A. cajennense sensu lato and A. auricularium. Some of these ixodids were also described as vectors of pathogens. Further studies are needed to evaluate the impact of ticks on anteater fitness, and to assess the role of these mammals as reservoirs of vector-borne diseases.
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The role of sloths and anteaters as Leishmania spp. reservoirs: a review and a newly described natural infection of Leishmania mexicana in the northern anteater
Parasitology Research, 2019Co-Authors: Claudia I. Muñoz-garcía, Sokani Sánchez-montes, Claudia Villanueva-garcía, Evangelina Romero-callejas, Hilda M. Díaz-lópez, Elías J. Gordillo-chávez, Carlos Martínez-carrasco, Eduardo Berriatua, Emilio Rendón-francoAbstract:For years, mammals of the order Pilosa have been considered Leishmania reservoirs. But while most studies have focused on sloth species, anteaters have been overlooked, and in many Leishmania endemic countries like Mexico, no studies have been carried out. The aims of this work were to identify the presence of Leishmania spp. in tissue samples from road-killed northern Tamanduas ( Tamandua mexicana ), using PCR amplification and sequencing of ITS1 DNA, and to discuss the role of Pilosa mammals as reservoirs of Leishmania based on available scientific records. This is the first study that identifies Leishmania in T. mexicana , from 1 of 16 individuals analyzed, so the estimated prevalence (CI 95%) of infection was 6.3% (0.3–27.2). Amplified sequence exhibited a 98.9% (727/735) similarity with L. mexicana , and phylogenetic analysis grouped the species in the L. mexicana - amazonensis cluster. The literature review revealed 241 cases of Leishmania spp. infection among 1219 Pilosa mammals evaluated, with prevalence between studies ranging from 3.5% in the brown-throated three-toed sloth ( Bradypus variegatus ) to 78% in the Hoffman’s two-toed sloth ( Choloepus hoffmanni ). Current scientific information indicates that C. hoffmanni sloths are reservoirs of Leishmania , and further studies are needed in order to clarify if other Pilosa species play a role in Leishmania transmission.
Claudia I. Muñoz-garcía - One of the best experts on this subject based on the ideXlab platform.
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RADIOGRAPHIC ANATOMY OF THE FORELIMB IN THE NORTHERN Tamandua (Tamandua MEXICANA).
Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians, 2020Co-Authors: Angel Raymundo Lozada-gallegos, Claudia I. Muñoz-garcía, Claudia Villanueva-garcía, Nadia Rocha-martínez, David Ovando-fuentes, Martha Beatriz Trejo-salas, Fausto Reyes-delgado, Emilio Rendón-francoAbstract:The thoracic limb anatomy of anteaters in the family Myrmecophagidae is specialized for accessing termite and ant nests and for defense purposes. In the case of the northern Tamandua (Tamandua mexicana), the forelimbs are also adapted for arboreal and terrestrial locomotion. Unfortunately, this species faces many conservation threats, such as habitat loss and traffic accidents, and injured individuals are frequently taken to wildlife rehabilitation centers. However, lack of knowledge of the radiographic osteoanatomy of this species may prevent appropriate management of injuries and thereby reduce the chances of successful release and survival. In order to fill this knowledge gap, this article describes for the first time the radiographic anatomy of the thoracic limb of the northern Tamandua using four standard views and one additional view. The additional orthogonal view helps visualize structures, such as the hamatus process and the sesamoid bone, that are otherwise difficult to visualize due to the natural forearm position of anteaters. Additionally, some fractures and physeal growth plates were identified in one juvenile individual. Further radiographic investigations should be conducted on anteaters to provide more tools for diagnosis, treatment, and rehabilitation of these animals.
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Epidemiological study of ticks collected from the northern Tamandua (Tamandua mexicana) and a literature review of ticks of Myrmecophagidae anteaters.
Ticks and tick-borne diseases, 2019Co-Authors: Claudia I. Muñoz-garcía, Sokani Sánchez-montes, Claudia Villanueva-garcía, Evangelina Romero-callejas, Carlos Martínez-carrasco, Emilio Rendón-franco, Carmen Guzmán-cornejo, Roxana Acosta-gutiérrez, Hilda Diaz-lopez, Eduardo BerriatuaAbstract:Abstract The family Myrmecophagidae contains three anteater species: Tamandua mexicana (Saussure, 1860), Tamandua tetradactyla (Linnaeus, 1758) and Myrmecophaga tridactyla (Linnaeus, 1758). These American anteater species currently face many conservation threats, among which road traffic accidents stand out. Parasitic studies on this family are scarce, and some of them include records of ectoparasites. Specifically for northern Tamandua (T. mexicana), there is a lack of studies at population level. The objectives of the present research were to carry out an epidemiological study of tick species and its abundance on road-killed northern anteater specimens and, moreover, to perform a literature review of ticks collected from anteaters of Myrmecophagidae family. Five tick species were identified, including four Amblyomma spp. and Rhipicephalus sanguineus sensu lato, on 23 road-killed anteaters. Tick infestation prevalence was 43% (10/23), with a median tick infestation intensity of 3.5 per anteater (interquartile range 1–13.7). The bibliographic review highlighted the existence of twenty-nine ixodid species recorded on the three anteater species from 14 countries, mainly Brazil. The most common tick species on the Myrmecophagidae family are Amblyomma nodosum, A. calcaratum, A. cajennense sensu lato and A. auricularium. Some of these ixodids were also described as vectors of pathogens. Further studies are needed to evaluate the impact of ticks on anteater fitness, and to assess the role of these mammals as reservoirs of vector-borne diseases.
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The role of sloths and anteaters as Leishmania spp. reservoirs: a review and a newly described natural infection of Leishmania mexicana in the northern anteater
Parasitology Research, 2019Co-Authors: Claudia I. Muñoz-garcía, Sokani Sánchez-montes, Claudia Villanueva-garcía, Evangelina Romero-callejas, Hilda M. Díaz-lópez, Elías J. Gordillo-chávez, Carlos Martínez-carrasco, Eduardo Berriatua, Emilio Rendón-francoAbstract:For years, mammals of the order Pilosa have been considered Leishmania reservoirs. But while most studies have focused on sloth species, anteaters have been overlooked, and in many Leishmania endemic countries like Mexico, no studies have been carried out. The aims of this work were to identify the presence of Leishmania spp. in tissue samples from road-killed northern Tamanduas ( Tamandua mexicana ), using PCR amplification and sequencing of ITS1 DNA, and to discuss the role of Pilosa mammals as reservoirs of Leishmania based on available scientific records. This is the first study that identifies Leishmania in T. mexicana , from 1 of 16 individuals analyzed, so the estimated prevalence (CI 95%) of infection was 6.3% (0.3–27.2). Amplified sequence exhibited a 98.9% (727/735) similarity with L. mexicana , and phylogenetic analysis grouped the species in the L. mexicana - amazonensis cluster. The literature review revealed 241 cases of Leishmania spp. infection among 1219 Pilosa mammals evaluated, with prevalence between studies ranging from 3.5% in the brown-throated three-toed sloth ( Bradypus variegatus ) to 78% in the Hoffman’s two-toed sloth ( Choloepus hoffmanni ). Current scientific information indicates that C. hoffmanni sloths are reservoirs of Leishmania , and further studies are needed in order to clarify if other Pilosa species play a role in Leishmania transmission.
Emilio Rendón-franco - One of the best experts on this subject based on the ideXlab platform.
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RADIOGRAPHIC ANATOMY OF THE FORELIMB IN THE NORTHERN Tamandua (Tamandua MEXICANA).
Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians, 2020Co-Authors: Angel Raymundo Lozada-gallegos, Claudia I. Muñoz-garcía, Claudia Villanueva-garcía, Nadia Rocha-martínez, David Ovando-fuentes, Martha Beatriz Trejo-salas, Fausto Reyes-delgado, Emilio Rendón-francoAbstract:The thoracic limb anatomy of anteaters in the family Myrmecophagidae is specialized for accessing termite and ant nests and for defense purposes. In the case of the northern Tamandua (Tamandua mexicana), the forelimbs are also adapted for arboreal and terrestrial locomotion. Unfortunately, this species faces many conservation threats, such as habitat loss and traffic accidents, and injured individuals are frequently taken to wildlife rehabilitation centers. However, lack of knowledge of the radiographic osteoanatomy of this species may prevent appropriate management of injuries and thereby reduce the chances of successful release and survival. In order to fill this knowledge gap, this article describes for the first time the radiographic anatomy of the thoracic limb of the northern Tamandua using four standard views and one additional view. The additional orthogonal view helps visualize structures, such as the hamatus process and the sesamoid bone, that are otherwise difficult to visualize due to the natural forearm position of anteaters. Additionally, some fractures and physeal growth plates were identified in one juvenile individual. Further radiographic investigations should be conducted on anteaters to provide more tools for diagnosis, treatment, and rehabilitation of these animals.
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Epidemiological study of ticks collected from the northern Tamandua (Tamandua mexicana) and a literature review of ticks of Myrmecophagidae anteaters.
Ticks and tick-borne diseases, 2019Co-Authors: Claudia I. Muñoz-garcía, Sokani Sánchez-montes, Claudia Villanueva-garcía, Evangelina Romero-callejas, Carlos Martínez-carrasco, Emilio Rendón-franco, Carmen Guzmán-cornejo, Roxana Acosta-gutiérrez, Hilda Diaz-lopez, Eduardo BerriatuaAbstract:Abstract The family Myrmecophagidae contains three anteater species: Tamandua mexicana (Saussure, 1860), Tamandua tetradactyla (Linnaeus, 1758) and Myrmecophaga tridactyla (Linnaeus, 1758). These American anteater species currently face many conservation threats, among which road traffic accidents stand out. Parasitic studies on this family are scarce, and some of them include records of ectoparasites. Specifically for northern Tamandua (T. mexicana), there is a lack of studies at population level. The objectives of the present research were to carry out an epidemiological study of tick species and its abundance on road-killed northern anteater specimens and, moreover, to perform a literature review of ticks collected from anteaters of Myrmecophagidae family. Five tick species were identified, including four Amblyomma spp. and Rhipicephalus sanguineus sensu lato, on 23 road-killed anteaters. Tick infestation prevalence was 43% (10/23), with a median tick infestation intensity of 3.5 per anteater (interquartile range 1–13.7). The bibliographic review highlighted the existence of twenty-nine ixodid species recorded on the three anteater species from 14 countries, mainly Brazil. The most common tick species on the Myrmecophagidae family are Amblyomma nodosum, A. calcaratum, A. cajennense sensu lato and A. auricularium. Some of these ixodids were also described as vectors of pathogens. Further studies are needed to evaluate the impact of ticks on anteater fitness, and to assess the role of these mammals as reservoirs of vector-borne diseases.
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The role of sloths and anteaters as Leishmania spp. reservoirs: a review and a newly described natural infection of Leishmania mexicana in the northern anteater
Parasitology Research, 2019Co-Authors: Claudia I. Muñoz-garcía, Sokani Sánchez-montes, Claudia Villanueva-garcía, Evangelina Romero-callejas, Hilda M. Díaz-lópez, Elías J. Gordillo-chávez, Carlos Martínez-carrasco, Eduardo Berriatua, Emilio Rendón-francoAbstract:For years, mammals of the order Pilosa have been considered Leishmania reservoirs. But while most studies have focused on sloth species, anteaters have been overlooked, and in many Leishmania endemic countries like Mexico, no studies have been carried out. The aims of this work were to identify the presence of Leishmania spp. in tissue samples from road-killed northern Tamanduas ( Tamandua mexicana ), using PCR amplification and sequencing of ITS1 DNA, and to discuss the role of Pilosa mammals as reservoirs of Leishmania based on available scientific records. This is the first study that identifies Leishmania in T. mexicana , from 1 of 16 individuals analyzed, so the estimated prevalence (CI 95%) of infection was 6.3% (0.3–27.2). Amplified sequence exhibited a 98.9% (727/735) similarity with L. mexicana , and phylogenetic analysis grouped the species in the L. mexicana - amazonensis cluster. The literature review revealed 241 cases of Leishmania spp. infection among 1219 Pilosa mammals evaluated, with prevalence between studies ranging from 3.5% in the brown-throated three-toed sloth ( Bradypus variegatus ) to 78% in the Hoffman’s two-toed sloth ( Choloepus hoffmanni ). Current scientific information indicates that C. hoffmanni sloths are reservoirs of Leishmania , and further studies are needed in order to clarify if other Pilosa species play a role in Leishmania transmission.
Ralph Tiedemann - One of the best experts on this subject based on the ideXlab platform.
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Electrophysiological and molecular genetic evidence for sympatrically occuring cryptic species in African weakly electric fishes (Teleostei: Mormyridae: Campylomormyrus).
Molecular phylogenetics and evolution, 2005Co-Authors: Philine G. D. Feulner, Frank Kirschbaum, Christian Schugardt, Valerio Ketmaier, Ralph TiedemannAbstract:Abstract For two sympatric species of African weakly electric fish, Campylomormyrus Tamandua and Campylomormyrus numenius, we monitored ontogenetic differentiation in electric organ discharge (EOD) and established a molecular phylogeny, based on 2222 bp from cytochrome b, the S7 ribosomal protein gene, and four flanking regions of unlinked microsatellite loci. In C. Tamandua, there is one common EOD type, regardless of age and sex, whereas in C. numenius we were able to identify three different male adult EOD waveform types, which emerged from a single common EOD observed in juveniles. Two of these EOD types formed well supported clades in our phylogenetic analysis. In an independent line of evidence, we were able to affirm the classification into three groups by microsatellite data. The correct assignment and the high pairwise FST values support our hypothesis that these groups are reproductively isolated. We propose that in C. numenius there are cryptic species, hidden behind similar and, at least as juveniles, identical morphs.
Birgit Kuhn - One of the best experts on this subject based on the ideXlab platform.
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Species recognition by the sequence of discharge intervals in weakly electric fishes of the genus Campylomormyrus (Mormyridae, Teleostei)
Animal Behaviour, 1994Co-Authors: Bernd Kramer, Birgit KuhnAbstract:Abstract Abstract. In two Campylomormyrus species, Tamandua and rhynchophorus from Central Africa, the electric organ discharge (EOD) activity was studied during the nocturnal activity phase in the laboratory. Both species have a pulse-type EOD of less than 200 μs duration and similar waveform; the sequence of inter-discharge intervals, however, differed characteristically: C. Tamandua displayed a 'micro-pattern' encompassing nearly the whole range of intervals in a sequence of only three intervals (long-intermediate-short), while in C. rhynchophorus adjacent intervals tended to be more similar in duration. Four C. rhynchophorus and five C. Tamandua were tested for their preference of conspecific pulse sequences rather than those of the other species, respectively, in playback experiments. These were performed in a T-maze paradigm such that two pulse patterns, one from each species, were simultaneously presented via two electric fish dipole models. Two pulse sequences recorded from different individuals were used to represent each species; the natural EOD waveform was replaced by a square-wave pulse of approximately natural duration. The pattern pairings and the sequence of stimulus patterns followed a randomized blocks design. Each of the four C. rhynchophorus had significantly higher preference scores for the conspecific pulse patterns than for those of C. Tamandua , while in C. Tamandua no such discrimination was observed. It is suggested that the juvenile C. Tamandua used would probably have joined mixed-species schools as reported to exist in the wild, while this appears unlikely in the more mature C. rhynchophorus. One of the functions of the inter-discharge interval code of communication in mormyrids is species recognition although this may be seen only in sufficiently mature fish.
