Programa de Pós-graduação em Medicina Veterinária, Universidade Federal Rural de Pernambuco - UFRPE, Recife, PE, Brasil.
Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil.
Rev Bras Parasitol Vet. 2024 Sep 23;33(4):e009924. doi: 10.1590/S1984-29612024052. eCollection 2024.
Toxoplasma gondii is a coccidian that infects almost all warm-blooded animals, including birds. Rocas Atoll Biological Reserve, located in the northeast of Brazil, is the only atoll in the South Atlantic, and home to the largest population of seabirds in the western Atlantic. In this study the occurrence of T. gondii antibodies in seabirds from Rocas Atoll were determined. Birds were manually captured, blood samples were taken, and antibodies detected by the modified agglutination test (>5). In total, 267 birds of seven species belonging to three families (Sternidae, Fregatidae and Sulidae) and two orders (Charadriiformes and Suliformes) were sampled. Out of the 267 samples, 20 (7.3%) were seropositive: nine out of 48 brown noddies (Anous stolidus), one out of 26 black noddies (Anous minutus), three out of 20 magnificent frigatebirds (Fregata magnificens), five out of 95 sooty terns (Onychoprion fuscatus) and two out of 20 red-footed boobies (Sula sula). None of the 33 masked boobies (Sula dactylatra) and the 25 brown boobies (Sula leucogaster) were seropositive. The antibody titers were 5 (n=6), 10 (n=4), 20 (n=3), 40 (n=6) and 160 (n=1). Due to the uniqueness of this environment, monitoring the seabirds is suggested to maintaining this Conservation Unit.
刚地弓形虫是一种寄生在几乎所有温血动物（包括鸟类）体内的球虫。罗卡斯环礁生物保护区位于巴西东北部，是南大西洋唯一的环礁，也是西大西洋最大的海鸟栖息地。本研究旨在检测罗卡斯环礁海鸟体内刚地弓形虫抗体的存在情况。通过人工捕捉的方式采集鸟类血液样本，并采用改良凝集试验（>5）检测抗体。共采集了 7 种 267 只鸟类，分属于 3 科（军舰鸟科、信天翁科和鹈鹕科）和 2 目（鸻形目和鹈形目）。在 267 个样本中，有 20 个（7.3%）呈血清阳性：48 只褐鹈鹕中有 9 只（Anous stolidus），26 只黑眉信天翁中有 1 只（Anous minutus），20 只大军舰鸟中有 3 只（Fregata magnificens），95 只乌燕鸥中有 5 只（Onychoprion fuscatus），20 只红脚鲣鸟中有 2 只（Sula sula）。33 只白腹军舰鸟（Sula dactylatra）和 25 只褐鹈鹕（Sula leucogaster）均呈血清阴性。抗体滴度分别为 5（n=6）、10（n=4）、20（n=3）、40（n=6）和 160（n=1）。鉴于该环境的独特性，建议对海鸟进行监测，以维护该保护区。
