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1. Survey of selected viral agents (herpesvirus, adenovirus and hepatitis E virus) in liver and lung samples of cetaceans, Brazil

Author

Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Consejo Superior de Investigaciones Científicas (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Sacristán, Carlos [0000-0002-6111-6301], Ewbank, Ana Carolina [0000-0002-5617-9287], Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Sacristán, Irene [0000-0002-4169-4884], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Esperón, Fernando [0000-0002-8810-5071], Sacristán, Carlos, Ewbank, Ana Carolina, Duarte-Benvenuto, Aricia, Sacristán, Irene, Zamana-Ramblas, Roberta, Costa-Silva, S, Lanes Ribeiro, V, Bertozzi, C P, Del Rio do Valle, R, Castilho, P V, Colosio, A C, Marcondes, M. C. C., Lailson-Brito, J, De Freitas Azevedo, A., Carvalho, Vitor L., Pessi, C F, Cremer, M, Esperón, Fernando, Catão-Dias, J. L., Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Consejo Superior de Investigaciones Científicas (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Sacristán, Carlos [0000-0002-6111-6301], Ewbank, Ana Carolina [0000-0002-5617-9287], Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Sacristán, Irene [0000-0002-4169-4884], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Esperón, Fernando [0000-0002-8810-5071], Sacristán, Carlos, Ewbank, Ana Carolina, Duarte-Benvenuto, Aricia, Sacristán, Irene, Zamana-Ramblas, Roberta, Costa-Silva, S, Lanes Ribeiro, V, Bertozzi, C P, Del Rio do Valle, R, Castilho, P V, Colosio, A C, Marcondes, M. C. C., Lailson-Brito, J, De Freitas Azevedo, A., Carvalho, Vitor L., Pessi, C F, Cremer, M, Esperón, Fernando, and Catão-Dias, J. L.

Abstract

Hepatic and pulmonary lesions are common in cetaceans, despite their poorly understood viral etiology. Herpesviruses (HV), adenoviruses (AdV) and hepatitis E virus (HEV) are emerging agents in cetaceans, associated with liver and/or pulmonary damage in mammals. We isolated and molecularly tested DNA for HV and AdV (n = 218 individuals; 187 liver and 108 lung samples) and RNA for HEV (n = 147 animals; 147 liver samples) from six cetacean families. All animals stranded or were bycaught in Brazil between 2001 and 2021. Positive-animals were analyzed by histopathology. Statistical analyses assessed if the prevalence of viral infection could be associated with the variables: species, family, habitat, region, sex, and age group. All samples were negative for AdV and HEV. Overall, 8.7% (19/218) of the cetaceans were HV-positive (4.8% [9/187] liver and 11.1% [12/108] lung), without HV-associated lesions. HV-prevalence was statistically significant higher in Pontoporiidae (19.2%, 10/52) when compared to Delphinidae (4.1%, 5/121), and in southeastern (17.1%, 13/76)-the most industrialized Brazilian region-when compared to the northeastern region (2.4%, 3/126). This study broadens the herpesvirus host range in cetaceans, including its description in pygmy sperm whales (Kogia breviceps) and humpback whales (Megaptera novaeangliae). Further studies must elucidate herpesvirus drivers in cetaceans.

Published
2024

2. Bacterial septicemia and herpesvirus infection in Antarctic fur seals (Arctocephalus gazella) stranded in the São Paulo coast, Brazil

Author

Conferencia de Rectores de las Universidades Españolas, Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Ewbank, Ana Carolina [0000-0002-5617-9287], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Costa-Silva, Samira [0000-0002-0294-1870], Silvestre-Perez, Natália [0000-0001-6716-4534], Faita, Thalita [0000-0003-3958-8246], Keid, Lara B. [0000-0003-3212-596X], Ferioli, R.B. [0000-0001-9212-7778], Ibáñez-Porras, Pablo [0009-0004-0618-8646], Navas-Suárez, Pedro Enrique [0000-0003-1385-901X], Catão-Dias, J. L. [0000-0003-2999-3395], Sacristán, Carlos [0000-0002-6111-6301], https://ror.org/02gfc7t72, Duarte-Benvenuto, Aricia, Sánchez-Sarmiento, A. M., Ewbank, Ana Carolina, Zamana-Ramblas, Roberta, Costa-Silva, Samira, Silvestre-Perez, Natália, Faita, Thalita, Keid, Lara B., Soares, Rodrigo M., Pessi, C.F., Sabbadini, J.R., Borges, M.F., Ferioli, R.B., Marcon, M., Barbosa, C.B., Fernandes, N.C.C.A., Ibáñez-Porras, Pablo, Navas-Suárez, Pedro Enrique, Catão-Dias, J. L., Sacristán, Carlos, Conferencia de Rectores de las Universidades Españolas, Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Ewbank, Ana Carolina [0000-0002-5617-9287], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Costa-Silva, Samira [0000-0002-0294-1870], Silvestre-Perez, Natália [0000-0001-6716-4534], Faita, Thalita [0000-0003-3958-8246], Keid, Lara B. [0000-0003-3212-596X], Ferioli, R.B. [0000-0001-9212-7778], Ibáñez-Porras, Pablo [0009-0004-0618-8646], Navas-Suárez, Pedro Enrique [0000-0003-1385-901X], Catão-Dias, J. L. [0000-0003-2999-3395], Sacristán, Carlos [0000-0002-6111-6301], https://ror.org/02gfc7t72, Duarte-Benvenuto, Aricia, Sánchez-Sarmiento, A. M., Ewbank, Ana Carolina, Zamana-Ramblas, Roberta, Costa-Silva, Samira, Silvestre-Perez, Natália, Faita, Thalita, Keid, Lara B., Soares, Rodrigo M., Pessi, C.F., Sabbadini, J.R., Borges, M.F., Ferioli, R.B., Marcon, M., Barbosa, C.B., Fernandes, N.C.C.A., Ibáñez-Porras, Pablo, Navas-Suárez, Pedro Enrique, Catão-Dias, J. L., and Sacristán, Carlos

Abstract

In August 2021, two juvenile male Antarctic fur seals (Arctocephalus gazella) stranded in the southeastern Brazilian coast and were referred to rehabilitation centers. The animals presented increased body temperature, prostration, respiratory distress and despite treatment died. A necropsy following a standardized protocol was performed, and formalin-fixed tissues were processed for microscopic examination. Samples were screened for morbillivirus, herpesvirus, and Brucella spp. by molecular analyses (PCR, RT-PCR). Bacteriological culture was performed in samples collected from the lungs, trachea, and lymph nodes of both cases. The main histopathologic findings were of infectious nature, including multifocal necrotizing and fibrinous mixed interstitial pneumonia, bronchiolitis, and bronchitis, with intralesional myriad bacteria associated with vascular fibrinoid necrosis. Pseudomonas aeruginosa was isolated from tracheal and lung swabs of Case 1, and Klebsiella oxytoca was found in nostril swabs, tracheobronchial lymph nodes, and lung of Case 2. Gammaherpesvirus infection was detected in both cases, and the sequences retrieved were classified into the genus Percavirus. All tested samples were PCR-negative for Brucella spp. and morbillivirus. We hypothesize that the deficient immunological status in association with starvation predisposed the reactivation of herpesvirus and secondary bacterial co-infections. To the authors' knowledge, this is the first molecular detection of herpesvirus in an Antarctic pinniped. These findings reinforce that Otariid gammaherpesvirus circulating in the Southern Hemisphere are likely endemic in the Arctocephalus genus. This report contributes to the current knowledge of health aspects affecting wild pinnipeds, especially in the poorly studied Antarctic species.

Published
2024

3. Short-Finned Pilot Whale Strandings Associated with Pilot Whale Morbillivirus, Brazil

Author

Fundação de Amparo à Pesquisa do Estado de São Paulo, Sacristán, Carlos [0000-0002-6111-6301], Cremer, Marta J. [0000-0003-3521-1409], Ewbank, Ana Carolina [0000-0002-5617-9287], Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Faita, Thalita [0000-0003-3958-8246], Navas-Suárez, Pedro Enrique [0000-0003-1385-901X], Silvestre-Perez, Natália [0000-0001-6716-4534], Catão-Dias, J. L. [0000-0003-2999-3395], Costa-Silva, Samira, Sacristán, Carlos, Soares, Rodrigo M., Carvalho, Vitor L., Castilho, Pedro V., Cremer, Marta J., Ewbank, Ana Carolina, Duarte-Benvenuto, Aricia, Faita, Thalita, Navas-Suárez, Pedro Enrique, Vieira, Jenyffer V., Pereira, Letícia G., Alves, Carolina F., Souza, Gabriela C., Lemos, Giulia G., Silvestre-Perez, Natália, Catão-Dias, J. L., Keid, Lara B., Fundação de Amparo à Pesquisa do Estado de São Paulo, Sacristán, Carlos [0000-0002-6111-6301], Cremer, Marta J. [0000-0003-3521-1409], Ewbank, Ana Carolina [0000-0002-5617-9287], Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Faita, Thalita [0000-0003-3958-8246], Navas-Suárez, Pedro Enrique [0000-0003-1385-901X], Silvestre-Perez, Natália [0000-0001-6716-4534], Catão-Dias, J. L. [0000-0003-2999-3395], Costa-Silva, Samira, Sacristán, Carlos, Soares, Rodrigo M., Carvalho, Vitor L., Castilho, Pedro V., Cremer, Marta J., Ewbank, Ana Carolina, Duarte-Benvenuto, Aricia, Faita, Thalita, Navas-Suárez, Pedro Enrique, Vieira, Jenyffer V., Pereira, Letícia G., Alves, Carolina F., Souza, Gabriela C., Lemos, Giulia G., Silvestre-Perez, Natália, Catão-Dias, J. L., and Keid, Lara B.

Abstract

Cetacean morbillivirus (CeMV) causes illness and death in cetaceans worldwide; the CeMV strains circulating in the Southern Hemisphere are poorly known. We detected a pilot whale CeMV strain in 3 short-finned pilot whales (Globicephala macrorhynchus) stranded in Brazil during July-October 2020. Our results confirm this virus circulates in this species.

Published
2023

4. Herpesvirus and adenovirus surveillance in threatened wild West Indian (Trichechus manatus) and Amazonian manatees (Trichechus inunguis), Brazil

Author

Sao Paulo Research Foundation, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil), Universidade de São Paulo, Ministério do Meio Ambiente e Mudança do Clima (Brasil), Ewbank, Ana Carolina [0000-0002-5617-9287], Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Sacristán, Irene [0000-0002-4169-4884], Costa-Silva, Samira [0000-0002-0294-1870], De Mello, Daniela M.D. [0000-0001-7079-5505], da Silva, Vera Maria Ferreira [0000-0001-8265-905X], Catão-Dias, J. L. [0000-0003-2999-3395], Sacristán, Carlos [ 0000-0002-6111-630], Ewbank, Ana Carolina, Duarte-Benvenuto, Aricia, Zamana-Ramblas, Roberta, Sacristán, Irene, Costa-Silva, Samira, Carvalho, Vitor L., De Mello, Daniela M.D., da Silva, Vera Maria Ferreira, Catão-Dias, J. L., Sacristán, Carlos, Sao Paulo Research Foundation, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil), Universidade de São Paulo, Ministério do Meio Ambiente e Mudança do Clima (Brasil), Ewbank, Ana Carolina [0000-0002-5617-9287], Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Sacristán, Irene [0000-0002-4169-4884], Costa-Silva, Samira [0000-0002-0294-1870], De Mello, Daniela M.D. [0000-0001-7079-5505], da Silva, Vera Maria Ferreira [0000-0001-8265-905X], Catão-Dias, J. L. [0000-0003-2999-3395], Sacristán, Carlos [ 0000-0002-6111-630], Ewbank, Ana Carolina, Duarte-Benvenuto, Aricia, Zamana-Ramblas, Roberta, Sacristán, Irene, Costa-Silva, Samira, Carvalho, Vitor L., De Mello, Daniela M.D., da Silva, Vera Maria Ferreira, Catão-Dias, J. L., and Sacristán, Carlos

Abstract

The family Trichechidae (order Sirenia) comprises three species African (Trichechus senegalenses), West Indian (T. manatus), WIM)], and the Amazonian manatees (T. inunguis, AMM). Whereas WIM inhabits both riverine and coastal systems in the western Atlantic, AMM is the only exclusively freshwater sirenian, endemic to the Amazon River Basin. The study of infectious agents is essential to species conservation, especially considering that both species are classified as Vulnerable by the IUCN Red List and as Endangered by the Brazilian Red List. The current knowledge about viral agents in sirenians is scarce. Herpesviruses and adenovirus are DNA viruses able to infect and cause disease in a wide range of hosts. Herein, we used panPCR protocols to survey herpesvirus and adenovirus in blood samples of wild WIM (n = 23) and AMM (n = 26) under human care in Brazil. Herpesvirus DNA was detected in one juvenile female WIM (1/23; 4.3%; 95% CI -4.7 – 13.3) from Ceará state and in four AMM (two juvenile females, a juvenile male, and an adult female; 4/26; 15.4%; 95% CI 0.5 – 30.3) from Amazonas state. The two different gammaherpesvirus DNA polymerase sequence types identified (one per species, a sequence type in a WIM and another one in three AMM) were highly similar (99% nucleotide identity) to Trichechid herpesvirus 1, reported in West Indian manatees of Florida (USA), and 100% identical when translated into amino acids. A herpesviral glycoprotein B sequence was identified in two AMM. None of the samples was positive to adenovirus. To the authors’ knowledge, this is the first herpesvirus detection in manatees from South America, expanding the herpesvirus geographical range, and the first in WIM and AMM worldwide. Our findings suggest (i) that West Indian and Amazonian manatees are possibly the natural hosts of the detected herpesvirus, and (ii) coevolution of that gammaherpesvirus with Trichechus. Future studies are necessary to characterize the obtained virus and elucidate po

Published
2023

5. Hemotropic Mycoplasma spp. in Aquatic Mammals, Amazon Basin, Brazil

Author

Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Fundação de Amparo à Pesquisa do Estado de São Paulo, Agencia Estatal de Investigación (España), Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Sacristán, Carlos [0000-0002-6111-6301], Ewbank, Ana Carolina [0000-0002-5617-9287], Sacristán, Irene [0000-0002-4169-4884], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Gravena, Waleska [0000-0002-1102-971X], Ferreira da Silva, Vera M. [0000-0002-1774-0393], Marmontel, Miriam [0000-0003-3747-9548], Marigo, Juliana [0000-0002-3279-2909], Catão-Dias, J. L. [0000-0003-2999-3395], Duarte-Benvenuto, Aricia, Sacristán, Carlos, Ewbank, Ana Carolina, Sacristán, Irene, Zamana-Ramblas, Roberta, Gravena, Waleska, Mello, Daniela M.D., Ferreira da Silva, Vera M., Marmontel, Miriam, Carvalho, Vitor L., Marigo, Juliana, Catão-Dias, J. L., Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Fundação de Amparo à Pesquisa do Estado de São Paulo, Agencia Estatal de Investigación (España), Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Sacristán, Carlos [0000-0002-6111-6301], Ewbank, Ana Carolina [0000-0002-5617-9287], Sacristán, Irene [0000-0002-4169-4884], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Gravena, Waleska [0000-0002-1102-971X], Ferreira da Silva, Vera M. [0000-0002-1774-0393], Marmontel, Miriam [0000-0003-3747-9548], Marigo, Juliana [0000-0002-3279-2909], Catão-Dias, J. L. [0000-0003-2999-3395], Duarte-Benvenuto, Aricia, Sacristán, Carlos, Ewbank, Ana Carolina, Sacristán, Irene, Zamana-Ramblas, Roberta, Gravena, Waleska, Mello, Daniela M.D., Ferreira da Silva, Vera M., Marmontel, Miriam, Carvalho, Vitor L., Marigo, Juliana, and Catão-Dias, J. L.

Abstract

Hemotropic Mycoplasma spp. (hemoplasmas) are uncultivable bacteria that infect mammals, including humans. We detected a potentially novel hemoplasma species in blood samples from wild river dolphins in the Amazon River Basin, Brazil. Further investigation could determine pathogenicity and zoonotic potential of the detected hemoplasma.

Published
2022

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