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

被引:6
作者
Ewbank, Ana Carolina [1 ]
Duarte-Benvenuto, Aricia [1 ]
Zamana-Ramblas, Roberta [1 ]
Sacristan, Irene [2 ]
Costa-Silva, Samira [1 ]
Carvalho, Vitor L. [3 ]
Drummond de Mello, Daniela Magalhaes [4 ]
Ferreira da Silva, Vera Maria [4 ]
Catao-Dias, Jose Luiz [1 ]
Sacristan, Carlos [2 ]
机构
[1] Univ Sao Paulo, Sch Vet Med & Anim Sci, BR-05508270 Sao Paulo, SP, Brazil
[2] CSIC, Ctr Invest Sanidad Anim CISA INIA, Valdeolmos 28130, Spain
[3] Assoc Pesquisa & Preservacao Ecossistemas Aquat A, BR-61627250 Caucaia, CE, Brazil
[4] Inst Nacl Pesquisas Amazonia INPA, BR-69067375 Manaus, Amazonas, Brazil
基金
巴西圣保罗研究基金会;
关键词
Marine mammal; Viruses; Gammaherpesvirus; PCR; South America; Sirenians; VERTICAL TRANSMISSION; UROGENITAL CARCINOMA; FLORIDA MANATEES; PAPILLOMATOSIS; AFROTHERIA; PHYLOGENY; LINEAGES; HYRAXES;
D O I
10.1016/j.actatropica.2022.106740
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
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 Cear ' a 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 potential pathological effects (if any) in these species.
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页数:7
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