1
|
Yaparla A, Stern DB, Hossainey MRH, Crandall KA, Grayfer L. Amphibian myelopoiesis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 146:104701. [PMID: 37196852 DOI: 10.1016/j.dci.2023.104701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 05/19/2023]
Abstract
Macrophage-lineage cells are indispensable to immunity and physiology of all vertebrates. Amongst these, amphibians represent a key stage in vertebrate evolution and are facing decimating population declines and extinctions, in large part due to emerging infectious agents. While recent studies indicate that macrophages and related innate immune cells are critically involved during these infections, much remains unknown regarding the ontogeny and functional differentiation of these cell types in amphibians. Accordingly, in this review we coalesce what has been established to date about amphibian blood cell development (hematopoiesis), the development of key amphibian innate immune cells (myelopoiesis) and the differentiation of amphibian macrophage subsets (monopoiesis). We explore the current understanding of designated sites of larval and adult hematopoiesis across distinct amphibian species and consider what mechanisms may lend to these species-specific adaptations. We discern the identified molecular mechanisms governing the functional differentiation of disparate amphibian (chiefly Xenopus laevis) macrophage subsets and describe what is known about the roles of these subsets during amphibian infections with intracellular pathogens. Macrophage lineage cells are at the heart of so many vertebrate physiological processes. Thus, garnering greater understanding of the mechanisms responsible for the ontogeny and functionality of these cells in amphibians will lend to a more comprehensive view of vertebrate evolution.
Collapse
Affiliation(s)
- Amulya Yaparla
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, USA
| | - David B Stern
- Milken Institute School of Public Health, Computational Biology Institute, George Washington University, Washington, DC, 20052, USA
| | | | - Keith A Crandall
- Milken Institute School of Public Health, Computational Biology Institute, George Washington University, Washington, DC, 20052, USA
| | - Leon Grayfer
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, USA.
| |
Collapse
|
2
|
Li Z, Wang Q, Sun K, Feng J. Prevalence of Batrachochytrium dendrobatidis in Amphibians From 2000 to 2021: A Global Systematic Review and Meta-Analysis. Front Vet Sci 2022; 8:791237. [PMID: 34977222 PMCID: PMC8718539 DOI: 10.3389/fvets.2021.791237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022] Open
Abstract
Chytridiomycosis is an amphibian fungal disease caused by Batrachochytrium dendrobatidis (Bd), which has caused large-scale death and population declines on several continents around the world. To determine the current status of Bd infection in amphibians, we conducted a global meta-analysis. Using PubMed, ScienceDirect, SpringerLink, China National Knowledge Infrastructure (CNKI) and Wanfang database searches, we retrieved a total of 111 articles from 2000 to 2021. Based on these, we estimated the Bd prevalence to be 18.54% (95% CI: 13.76–20.52) in current extent amphibians. Among these populations, the prevalence of Bd in Asia was the lowest at 7.88% (95% CI: 1.92–8.71). Further, no Bd infection was found in Vietnam. However, the prevalence of Bd in Oceania was the highest at 36.34% (95% CI: 11.31–46.52). The Bd prevalence in Venezuela was as high as 49.77% (95% CI: 45.92–53.62). After 2009, the global Bd prevalence decreased to 18.91% (95% CI: 13.23–21.56). The prevalence of Bd in epizootic populations was significantly higher than enzootic populations. The highest prevalence of Bd was detected with real-time PCR at 20.11% (95% CI: 13.12–21.38). The prevalence of Bd in frogs was the highest at 20.04% (95% CI: 13.52–21.71), and this different host was statistically significant (P < 0.05). At the same time, we analyzed the geographic factors (longitude, latitude, elevation, rainfall and temperature) that impacted the fungal prevalence in amphibians. Our meta-analysis revealed that factors including region, disease dynamic, detection method, host and climate may be sources of the observed heterogeneity. These results indicate that chytridiomycosis was a consistent threat to amphibians from 2000 to 2021. Based on different habitat types and geographical conditions, we recommend formulating corresponding control plans and adopting reasonable and efficient biological or chemical methods to reduce the severity of such diseases.
Collapse
Affiliation(s)
- Zhongle Li
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Qi Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Keping Sun
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.,Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun, China
| | - Jiang Feng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| |
Collapse
|
3
|
Pinho SRC, Rodríguez-Málaga S, Lozano-Osorio R, Correa FS, Silva IB, Santos-Costa MC. Effects of the habitat on anuran blood parasites in the Eastern Brazilian Amazon. AN ACAD BRAS CIENC 2021; 93:e20201703. [PMID: 34909821 DOI: 10.1590/0001-3765202120201703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 09/19/2021] [Indexed: 11/21/2022] Open
Abstract
Biological interactions play an important role in regulating and maintaining natural populations. Like most interactions, parasitism may be influenced by environmental conditions. Therefore, changes caused by human activity may drastically affect the equilibrium of the assemblages of parasitized organisms (hosts). Herein, we described the composition of hemoparasites of anurans from two distinct environments: forest and oil palm plantations. We identified the most frequent groups of blood parasites, and whether infections differ between habitats (forest and plantation) and between microhabitats (arboreal or terrestrial). We collected 128 anurans, of which 46 (36%) were parasitized by hemoparasites. The genus Trypanosoma spp. was found in 30% (n = 37/128) of the infected anurans in both habitats, recorded mostly in terrestrial anurans in oil palm plantations. Apicomplexa hemoprotozoans were also found in 13% (n=17/128) of the anurans, which mainly were terrestrial species collected in oil palm plantations. There was no difference in parasitism between the two assemblies and between the studied microhabitats. This is the first study that has analyzed the ecological relationship between anurans as hosts and their blood parasites, in a region under intense anthropic pressure, in the Brazilian Amazon.
Collapse
Affiliation(s)
- Sílvia R C Pinho
- Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Augusto Correia, 1, 66075-110 Belém, PA, Brazil.,Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Ecologia e Zoologia de Vertebrados, Augusto Correia, 1, 66075-110 Belém, PA, Brazil
| | - Sérgio Rodríguez-Málaga
- Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Parasitologia, Augusto Correia, 1, 66075-110 Belém, PA, Brazil
| | - Rodrigo Lozano-Osorio
- Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Augusto Correia, 1, 66075-110 Belém, PA, Brazil.,Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Ecologia e Zoologia de Vertebrados, Augusto Correia, 1, 66075-110 Belém, PA, Brazil
| | - Fabrício S Correa
- Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Ecologia e Zoologia de Vertebrados, Augusto Correia, 1, 66075-110 Belém, PA, Brazil.,Secretaria de Estado de Meio Ambiente e Sustentabilidade, Av. Magalhães Barata, 130, 66040-170 Belém, PA, Brazil
| | - Iago B Silva
- Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Augusto Correia, 1, 66075-110 Belém, PA, Brazil.,Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Ecologia e Zoologia de Vertebrados, Augusto Correia, 1, 66075-110 Belém, PA, Brazil
| | - Maria C Santos-Costa
- Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Augusto Correia, 1, 66075-110 Belém, PA, Brazil.,Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Ecologia e Zoologia de Vertebrados, Augusto Correia, 1, 66075-110 Belém, PA, Brazil
| |
Collapse
|
4
|
Lourenço-De-Moraes R, Lisboa BS, Oliveira Drummond LD, De Melo Moura CC, Barbosa De Moura GJ, Lyra ML, Guarnieri MC, Mott T, Hoogmoed MS, Santana DJ. A New Species of the Genus Adelophryne (Anura: Eleutherodactylidae: Phyzelaphryninae) from the Atlantic Forest of Northeastern Brazil. HERPETOLOGICA 2021. [DOI: 10.1655/herpetologica-d-20-00022.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Ricardo Lourenço-De-Moraes
- Programa de Pós-graduação em Ecologia e Monitoramento Ambiental (PPGEMA), Universidade Federal da Paraíba (UFPB), Campus IV, Litoral Norte, CEP 58297-000, Rio Tinto, Paraíba, Brazil
| | - Barnagleison Silva Lisboa
- Programa de Pós-Graduação em Biologia Animal (PPGBA), Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), CEP 50670-901, Recife, Pernambuco, Brazil
| | - Leandro De Oliveira Drummond
- Laboratório de Vertebrados, Departamento de Ecologia, Universidade Federal do Rio de Janeiro, Ilha do Fundão. CEP 21941-901, Rio de Janeiro, RJ, Brazil
| | - Carina Carneiro De Melo Moura
- Department of Forest Genetics and Forest Tree Breeding, University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - Geraldo Jorge Barbosa De Moura
- Departamento de Biologia Universidade Federal Rural de Pernambuco Rua Dom Manoel de Medeiros Recife Pernambuco 52171-900 Brazil
| | - Mariana Lúcio Lyra
- Departamento de Biodiversidade e Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Campus de Rio Claro, São Paulo, Brazil
| | - Miriam Camargo Guarnieri
- Programa de Pós-Graduação em Biologia Animal (PPGBA), Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), CEP 50670-901, Recife, Pernambuco, Brazil
| | - Tamí Mott
- Setor de Biodiversidade, Laboratório de Biologia Integrativa, Universidade Federal de Alagoas, Av. Lourival Melo Mota, s/n, Ta-buleiro, 57072-970, Maceió, AL, Brazil
| | | | - Diego José Santana
- Universidade Federal de Mato Grosso do Sul, Instituto de Biociências, Cidade Universitária, CEP 79002-970, Campo Grande, Mato Grosso do Sul, Brazil
| |
Collapse
|
5
|
Amorim FO, Pimentel LA, Machado LF, Cavalcanti ADC, Napoli MF, Juncá FA. New records of Batrachochytrium dendrobatidis in the state of Bahia, Brazil: histological analysis in anuran amphibian collections. DISEASES OF AQUATIC ORGANISMS 2019; 136:147-155. [PMID: 31621647 DOI: 10.3354/dao03402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Infection caused by the fungus Batrachochytrium dendrobatidis (Bd) produces chytridiomycosis, a disease considered one of the main causes of amphibian population declines in the world. In Brazil, Bd has been recorded in several regions, but mainly in the Atlantic Forest biome. This study aimed to investigate the occurrence of Bd in amphibian species in Bahia State to test the hypothesis that Bd is widespread in other Brazilian biomes. Using histological analysis, we evaluated the skin of 190 anurans of 85 species preserved in herpetological collections. Based on these analyses, the distribution of Bd was extended approximately 400 km to the west, 150 km to the north and 105 km to the east in the state of Bahia. Of the 190 specimens analyzed, Bd infection was diagnosed in 16 individuals, from 14 species, with the earliest record from a specimen collected in 1996 in the Caatinga biome. We identified Bd in 13 adult specimens, including 2 individuals showing suggestive signs of the disease (loss of skin pigmentation). In tadpoles, we recorded fungal structures in the oral region and on the epidermis adjacent to the rows of teeth. The results of this study corroborate the prediction that Bd is widespread in the Atlantic Forest biome, and suggest that it is widespread in the other biomes of the state (Cerrado and Caatinga, at least since 1996). Conservation efforts should involve long-term studies aimed at providing information on the dynamics of the infection, its relationship with its host and its effect on amphibian populations.
Collapse
Affiliation(s)
- F O Amorim
- Institute of Biology, Federal University of Bahia - UFBA, Rua Barão de Jeremoabo, s/n, Ondina Campus, CEP 40170-115, Salvador, Bahia, Brazil
| | | | | | | | | | | |
Collapse
|
6
|
Bolom‐Huet R, Pineda E, Díaz‐Fleischer F, Muñoz‐Alonso AL, Galindo‐González J. Known and estimated distribution in Mexico of
Batrachochytrium dendrobatidis,
a pathogenic fungus of amphibians. Biotropica 2019. [DOI: 10.1111/btp.12697] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Eduardo Pineda
- Red de Biología y Conservación de Vertebrados Instituto de Ecología A. C. Xalapa Veracruz México
| | | | | | | |
Collapse
|
7
|
Rojas RR, Fouquet A, Ron SR, Hernández-Ruz EJ, Melo-Sampaio PR, Chaparro JC, Vogt RC, de Carvalho VT, Pinheiro LC, Avila RW, Farias IP, Gordo M, Hrbek T. A Pan-Amazonian species delimitation: high species diversity within the genus Amazophrynella (Anura: Bufonidae). PeerJ 2018; 6:e4941. [PMID: 30013824 PMCID: PMC6042491 DOI: 10.7717/peerj.4941] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 05/21/2018] [Indexed: 11/20/2022] Open
Abstract
Amphibians are probably the most vulnerable group to climate change and climate-change associate diseases. This ongoing biodiversity crisis makes it thus imperative to improve the taxonomy of anurans in biodiverse but understudied areas such as Amazonia. In this study, we applied robust integrative taxonomic methods combining genetic (mitochondrial 16S, 12S and COI genes), morphological and environmental data to delimit species of the genus Amazophrynella (Anura: Bufonidae) sampled from throughout their pan-Amazonian distribution. Our study confirms the hypothesis that the species diversity of the genus is grossly underestimated. Our analyses suggest the existence of eighteen linages of which seven are nominal species, three Deep Conspecific Lineages, one Unconfirmed Candidate Species, three Uncategorized Lineages, and four Confirmed Candidate Species and described herein. We also propose a phylogenetic hypothesis for the genus and discuss its implications for historical biogeography of this Amazonian group.
Collapse
Affiliation(s)
- Rommel R Rojas
- Laboratory of Evolution and Animal Genetics, Department of Genetics, ICB, Universidade Federal do Amazonas, Brazil
| | - Antoine Fouquet
- Laboratoire Ecologie, Evolution et Interactions des Systèmes Amazoniens, Centre de recherche de Montabo, Cayenne, French Guiana
| | - Santiago R Ron
- Museo de Zoología, Escuela de Biología, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Emil José Hernández-Ruz
- Laboratório de Zoologia, Faculdade de Ciências Biológicas, Campus Universitário de Altamira, Universidade Federal do Pará, Altamira, Para, Brazil
| | - Paulo R Melo-Sampaio
- Departamento de Vertebrados, Museu Nacional, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juan C Chaparro
- Coleccion de anfibios y reptiles, Museo de la Biodiversidad, Cusco, Peru.,Museo de Historia Natural, Universidad Nacional de San Antonio Abad, Cusco, Peru
| | - Richard C Vogt
- CEQUA, Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
| | - Vinicius Tadeu de Carvalho
- Laboratory of Evolution and Animal Genetics, Department of Genetics, ICB, Universidade Federal do Amazonas, Brazil.,Departamento de Ciências Biológicas, Centro de Ciências Biológicas e da Saúde, Universidade Regional do Cariri, Crato, Ceara, Brazil
| | | | - Robson W Avila
- Departamento de Ciências Biológicas, Centro de Ciências Biológicas e da Saúde, Universidade Regional do Cariri, Crato, Ceara, Brazil
| | - Izeni Pires Farias
- Laboratory of Evolution and Animal Genetics, Department of Genetics, ICB, Universidade Federal do Amazonas, Brazil
| | - Marcelo Gordo
- Departamento de Biologia, ICB, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Tomas Hrbek
- Laboratory of Evolution and Animal Genetics, Department of Genetics, ICB, Universidade Federal do Amazonas, Brazil
| |
Collapse
|
8
|
Ruggeri J, Carvalho-E-Silva SP, James TY, Toledo LF. Amphibian chytrid infection is influenced by rainfall seasonality and water availability. DISEASES OF AQUATIC ORGANISMS 2018; 127:107-115. [PMID: 29384480 DOI: 10.3354/dao03191] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Amphibians suffer from a number of factors that make them the most threatened group of vertebrates. One threat is the fungal disease chytridiomycosis caused by the emerging pathogen Batrachochytrium dendrobatidis (Bd), which has rapidly spread and caused the loss of massive amphibian biodiversity worldwide. Recently, Bd was associated with a few amphibian population declines and extinctions in some areas of the Brazilian Atlantic Forest. However, the mechanisms underlying such declines are not fully understood. Therefore, it is essential to improve our knowledge of abiotic factors that can possibly influence Bd prevalence and chytridiomycosis disease severity. Herein we tested the hypothesis that water availability (such as in perennial streams, where Bd is frequently present in larvae) and rainfall would increase the prevalence of Bd. To test this, we sampled frogs from 6 transects with different numbers of perennial waterbodies, and we report that the more water available in the area, the higher the probability of Bd infection on anurans. Seasonality also influenced both the Bd prevalence in the area and the intensity of infection in infected frogs. However, Bd prevalence was higher during the rainy months whereas the infection burden was lower. We suggest that Bd is likely spread during the summer, when most anuran species gather near the water for spawning and when rainfall overfills ephemeral wetlands. On the other hand, during the drier months, a higher infection burden may be explained by increased disease susceptibility.
Collapse
Affiliation(s)
- Joice Ruggeri
- Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | |
Collapse
|
9
|
Lambertini C, Becker CG, Bardier C, da Silva Leite D, Toledo LF. Spatial distribution of Batrachochytrium dendrobatidis in South American caecilians. DISEASES OF AQUATIC ORGANISMS 2017; 124:109-116. [PMID: 28425424 DOI: 10.3354/dao03114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The amphibian-killing fungus Batrachochytrium dendrobatidis (Bd) is linked to population declines in anurans and salamanders globally. To date, however, few studies have attempted to screen Bd in live caecilians; Bd-positive caecilians have only been reported in Africa and French Guiana. Here, we performed a retrospective survey of museum preserved specimens to (1) describe spatial patterns of Bd infection in Gymnophiona across South America and (2) test whether areas of low climatic suitability for Bd in anurans predict Bd spatial epidemiology in caecilians. We used quantitative PCR to detect Bd in preserved caecilians collected over a 109 yr period, and performed autologistic regressions to test the effect of bioclimatic metrics of temperature and precipitation, vegetation density, and elevation on the likelihood of Bd occurrence. We detected an overall Bd prevalence of 12.4%, with positive samples spanning the Uruguayan savanna, Brazil's Atlantic Forest, and the Amazon basin. Our autologistic models detected a strong effect of macroclimate, a weaker effect of vegetation density, and no effect of elevation on the likelihood of Bd occurrence. Although most of our Bd-positive records overlapped with reported areas of high climatic suitability for the fungus in the Neotropics, many of our new Bd-positive samples extend far into areas of poor suitability for Bd in anurans. Our results highlight an important gap in the study of amphibian chytridiomycosis: the potential negative impact of Bd on Neotropical caecilians and the hypothetical role of caecilians as Bd reservoirs.
Collapse
Affiliation(s)
- Carolina Lambertini
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB), Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo 13083-862, Brazil
| | | | | | | | | |
Collapse
|
10
|
Ruano-Fajardo G, Toledo LF, Mott T. Jumping into a trap: high prevalence of chytrid fungus in the preferred microhabitats of a bromeliad-specialist frog. DISEASES OF AQUATIC ORGANISMS 2016; 121:223-232. [PMID: 27786160 DOI: 10.3354/dao03045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The chytrid fungus Batrachochytrium dendrobatidis (Bd) has been identified as a major threat to several amphibian populations in tropical forests. Amphibians that inhabit the phytotelmata (water tanks) of bromeliads may be especially at risk of Bd infection since the humid, environmentally buffered microhabitat that they prefer might also be favorable for Bd persistence on the host. To test this hypothesis, we sampled adults and tadpoles of the bromeligenous anuran Phyllodytes edelmoi (endemic to the northern Brazilian Atlantic Forest) from the bromeliad Portea leptantha for Bd, using qPCR. We also analyzed 8 bromeliad characteristics: water tank temperature and pH, canopy closure, tank diameter, number of leaves, bromeliad maximum column depth to store water, bromeliad relative volume, and season. Adult frogs preferentially selected bromeliads with a smaller diameter, more leaves and a relatively higher volume of water. We found that Bd was more prevalent in frogs inhabiting bromeliad phytotelmata with smaller diameters, suggesting that the behavioral preferences of P. edelmoi may be driving Bd infection patterns. Therefore, species such as P. edelmoi will be trapped by their own natural history traits.
Collapse
Affiliation(s)
- Gustavo Ruano-Fajardo
- Programa de Pós Graduação em Diversidade Biológica e Conservação nos Trópicos, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Av. Lourival Melo Mota, s/n, Tabuleiro, 57052-970 Maceió, Alagoas, Brazil
| | | | | |
Collapse
|
11
|
Valencia-Aguilar A, Toledo LF, Vital MV, Mott T. Seasonality, Environmental Factors, and Host Behavior Linked to Disease Risk in Stream-Dwelling Tadpoles. HERPETOLOGICA 2016. [DOI: 10.1655/herpetologica-d-15-00013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
12
|
|
13
|
Preuss JF, Lambertini C, Leite DDS, Toledo LF, Lucas EM. Crossing the threshold: an amphibian assemblage highly infected withBatrachochytrium dendrobatidisin the southern Brazilian Atlantic forest. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2016. [DOI: 10.1080/01650521.2016.1163857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
14
|
Jenkinson TS, Betancourt Román CM, Lambertini C, Valencia‐Aguilar A, Rodriguez D, Nunes‐de‐Almeida CHL, Ruggeri J, Belasen AM, Silva Leite D, Zamudio KR, Longcore JE, Toledo LF, James TY. Amphibian‐killing chytrid in
B
razil comprises both locally endemic and globally expanding populations. Mol Ecol 2016; 25:2978-96. [DOI: 10.1111/mec.13599] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 02/16/2016] [Accepted: 02/23/2016] [Indexed: 01/13/2023]
Affiliation(s)
- T. S. Jenkinson
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| | - C. M. Betancourt Román
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| | - C. Lambertini
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - A. Valencia‐Aguilar
- Programa de Pós‐Graduação em Diversidade Biológica e Conservação nos Trópicos Instituto de Ciências Biológicas e da Saúde Universidade Federal de Alagoas Maceió AL 57052‐970 Brasil
| | - D. Rodriguez
- Department of Biology Texas State University San Marcos TX 78666 USA
| | - C. H. L. Nunes‐de‐Almeida
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - J. Ruggeri
- Laboratório de Anfíbios e Répteis Departamento de Zoologia Instituto de Biologia Universidade Federal do Rio de Janeiro Rio de Janeiro RJ 21941‐902 Brasil
| | - A. M. Belasen
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| | - D. Silva Leite
- Laboratório de Antígenos Bacterianos Departamento de Genética, Evolução e Bioagentes Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - K. R. Zamudio
- Department of Ecology and Evolutionary Biology Cornell University Ithaca NY 14853 USA
| | - J. E. Longcore
- School of Biology and Ecology University of Maine Orono ME 04469 USA
| | - L. F. Toledo
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - T. Y. James
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| |
Collapse
|
15
|
Bovo RP, Andrade DV, Toledo LF, Longo AV, Rodriguez D, Haddad CFB, Zamudio KR, Becker CG. Physiological responses of Brazilian amphibians to an enzootic infection of the chytrid fungus Batrachochytrium dendrobatidis. DISEASES OF AQUATIC ORGANISMS 2016; 117:245-52. [PMID: 26758658 DOI: 10.3354/dao02940] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Pathophysiological effects of clinical chytridiomycosis in amphibians include disorders of cutaneous osmoregulation and disruption of the ability to rehydrate, which can lead to decreased host fitness or mortality. Less attention has been given to physiological responses of hosts where enzootic infections of Batrachochytrium dendrobatidis (Bd) do not cause apparent population declines in the wild. Here, we experimentally tested whether an enzootic strain of Bd causes significant mortality and alters host water balance (evaporative water loss, EWL; skin resistance, R(s); and water uptake, WU) in individuals of 3 Brazilian amphibian species (Dendropsophus minutus, n = 19; Ischnocnema parva, n = 17; Brachycephalus pitanga, n = 15). Infections with enzootic Bd caused no significant mortality, but we found an increase in R(s) in 1 host species concomitant with a reduction in EWL. These results suggest that enzootic Bd infections can indeed cause sub-lethal effects that could lead to reduction of host fitness in Brazilian frogs and that these effects vary among species. Thus, our findings underscore the need for further assessment of physiological responses to Bd infections in different host species, even in cases of sub-clinical chytridiomycosis and long-term enzootic infections in natural populations.
Collapse
Affiliation(s)
- Rafael P Bovo
- Departamento de Zoologia, c. p. 199, Universidade Estadual Paulista, 13506-900, Rio Claro, SP, Brazil
| | | | | | | | | | | | | | | |
Collapse
|