Analysis of free-living seabirds from Brazil as potential hosts of Toxoplasma gondii and serological investigation for antibodies against Leptospira spp.

被引：0

作者：

Acosta, Igor C. L. ^{[1
,2
,3
]}

Chiebao, Daniela P. ^{[4
]}

Serafini, Patricia P. ^{[5
,6
]}

Canani, Gabriel ^{[3
,7
,8
]}

Pena, Hilda F. J. ^{[2
]}

Heinemann, Marcos B. ^{[2
]}

Souza-Filho, Antonio F. ^{[2
,9
]}

Campolina, Cynthia ^{[7
,10
]}

Marques, Caio A. ^{[3
]}

Neves, Tatiana S. ^{[3
]}

Efe, Marcio A. ^{[11
]}

Nunes, Guilherme T. ^{[12
]}

Labruna, Marcelo B. ^{[2
]}

Bugoni, Leandro ^{[7
,8
]}

机构：

[1] Univ Fed Rio Grande FURG, Programa Monitoramento Biodiversidade Aquat Area A, Rio Grande, RS, Brazil

[2] Univ Sao Paulo, Fac Vet Med & Anim Sci FMVZ USP, Dept Surg, Cidade Univ,Ave Prof Orlando Marques de Paiva 87, BR-05508270 Sao Paulo, SP, Brazil

[3] Projeto Albatroz Inst Albatroz, Rua Marechal Hermes 35, Santos, SP, Brazil

[4] Anim Hlth Res & Dev Ctr, Inst Biol, Ave Conselheiro Rodrigues Alves 1252, BR-04014002 Sao Paulo, SP, Brazil

[5] Univ Fed Santa Catarina UFSC, Lab Biomarcadores Contaminacao Aquat & Imunoquim, BR-88040900 Florianopolis, SC, Brazil

[6] Inst Chico Mendes Conservacao Biodiversidade ICMBi, Ctr Nacl Pesquisa & Conservacao Aves Silvestres C, Florianopolis, SC, Brazil

[7] Univ Fed Rio Grande FURG, Inst Ciencias Biol, Lab Aves Aquat & Tartarugas Marinhas, Rio Grande, RS, Brazil

[8] Univ Fed Rio Grande FURG, Programa Posgrad Oceanog Biol, FURG, Rio Grande, RS, Brazil

[9] Univ Fed Mato Grosso UFMS, Fac Med Vet & Zootecnia, Ave Senador Felinto Muller 2443, BR-79070900 Campo Grande, MS, Brazil

[10] Univ Estadual Santa Cruz UESC, Programa Posgrad Ecol & Conservacao Biodiversidade, Ilheus, BA, Brazil

[11] Univ Fed Alagoas UFAL, Lab Bioecol & Conservacao Aves Neotropicais, Maceio, AL, Brazil

[12] Univ Fed Rio Grande do Sul UFRGS, Ctr Estudos Costeiros Limnol & Marinhos, BR-95625000 Imbe, RS, Brazil

来源：

VETERINARY RESEARCH COMMUNICATIONS | 2025年 / 49卷 / 01期

关键词：

Avian diseases; Breeding seabirds; One Health; Phaethontiformes; Procellariiformes; Protozoan; Suliformes; Wildlife; OOCYSTS; TRANSMISSION; SPECIFICITY; INFECTION; SURVIVAL;

D O I：

10.1007/s11259-024-10575-x

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

Dispersal patterns of zoonotic pathogens can be strongly influenced by mobility and contact among hosts. Toxoplasma gondii infection has been documented in many avian species, however, there is little information regarding free-living seabird populations. Leptospira can infect domestic and wild animals, with birds being potential carriers of the bacteria. The continental shelf of the southwestern Atlantic Ocean is a foraging area for seabirds that breed locally, as well as migratory seabirds wintering in the area, which may come into contact with each other in prey aggregation areas and contribute to T. gondii and Leptospira spread. Therefore, this study aimed to investigate the prevalence of two important zoonotic pathogens in free-living seabirds. Blood samples were collected from 322 birds of three local breeders (Phaethon aethereus, Sula leucogaster and S. dactylatra) in the eastern coast of Brazil (Abrolhos Archipelago), and two migratory species using the area during the pre-laying (Pterodroma arminjoniana) and the non-breeding periods (Thalassarche chlororhynchos). Serological agglutination tests for detection of anti-Toxoplasma gondii and anti-Leptospira spp. antibodies were performed. None of the seabirds in this study was seroreactive to Leptospira spp., whereas 34.5% (n = 111) of the animals presented antibodies anti-T. gondii. Antibody titers in seropositive birds ranged from 10 to 640. There were seropositive birds in all sampled localities. This study provides the first records for P. arminjoniana and T. chlororhynchos as seropositive to T. gondii, suggesting their potential role as sentinels for the environmental contamination by T. gondii and also T. gondii infection. These findings indicate the circulation of the parasite in the Brazilian coastal and oceanic regions, probably due to the ingestion of T. gondii oocysts by birds, the epidemiological involvement of migratory birds as hosts of pathogens, as well as the role of the historical introduction of invasive vertebrates on Brazilian islands. Therefore, due to the serological evidence of infection, the dynamics of toxoplasmosis in seabirds, regarding their susceptibility towards the disease and the possible anthropogenic influence need to be better understood for the colonies to be included in the wildlife cycle of T. gondii.

引用

页数：9