Gris Anderson Hentz, de Amorim Derek Blaese, Breyer Gabriela Merker, Perosa Fernanda Felicetti, Piva Manoela Marchezan, da Silva Emanoelly Machado Sousa, Zitelli Larissa Caló, da Silva Maria Eduarda Rocha Jacques, Torres Mariana Costa, Dos Santos Elisandro Oliveira, Ribeiro Vanessa Lanes, Siqueira Franciele Maboni, Sonne Luciana
Setor de Patologia Veterinária, Departamento de Patologia Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
Programa de Pós-Graduação em Ciências Veterinárias da Universidade Federal do Rio Grande do Sul (PPGCV-UFRGS), Porto Alegre, RS, Brazil.
Vet Res Commun. 2025 May 16;49(4):199. doi: 10.1007/s11259-025-10772-2.
We report a microbiological and pathological investigation of a juvenile male humpback whale (Megaptera novaeangliae) stranded in Mostardas, Rio Grande do Sul, Brazil. Macroscopically, the lung parenchyma exhibited a diffuse hyperemia, that on histological examination was composed of suppurative bronchopneumonia associated with necrosis of the bronchial epithelium. Microbiological analyses of the lung tissue demonstrated pure and significant growth of Granulicatella balaenopterae. Lastly, on the microscopic exam, the whale presented a pattern of meningoencephalitis and bacterial enterocolitis lesions, however, the etiology was not able to be accurately determined. G. balaenoptera is a bacterium that has already been detected in marine mammals; however, before this report, it had never been associated with a lesion. It is suggested that the humpback whale has been stranded due to combined disease factors such as pneumonia and meningoencephalitis.
我们报告了对一头搁浅在巴西南里奥格兰德州莫斯塔达斯的幼年雄性座头鲸（Megaptera novaeangliae）进行的微生物学和病理学调查。宏观上，肺实质呈现弥漫性充血，组织学检查显示为化脓性支气管肺炎并伴有支气管上皮坏死。对肺组织的微生物学分析表明，格兰氏鲸杆菌（Granulicatella balaenopterae）呈纯培养且生长显著。最后，在显微镜检查中，该鲸鱼呈现出脑膜脑炎和细菌性小肠结肠炎病变模式，然而，病因未能准确确定。格兰氏鲸杆菌是一种已在海洋哺乳动物中检测到的细菌；然而，在本报告之前，它从未与病变相关联。据推测，这头座头鲸是由于肺炎和脑膜脑炎等多种疾病因素而搁浅的。
