Epidemiology, hematology, and unusual morphological characteristics of Plasmodium during an avian malaria outbreak in penguins in Brazil
Epidemiology, hematology, and unusual morphological characteristics of Plasmodium during an avian malaria outbreak in penguins in Brazil
复制标题
巴西企鹅禽疟疾暴发期间疟原虫的流行病学、血液学和异常形态特征
DOI：
10.1007/s00436-019-06459-8
复制
发表时间：
2019
影响因子：
2
通讯作者：
Catão-Dias, José Luiz
中科院分区：
文献类型：
--
作者：
Vanstreels, Ralph Eric;Dutra, Daniela de;Ferreira-Junior, Francisco C.;Hurtado, Renata;Egert, Leandro;Mayorga, Luis Felipe;Bhering, Renata C.;Braga, Érika M.;Catão-Dias, José Luiz
禽疟疾是一种由疟原虫引起的蚊媒疾病。原生动物和企鹅被认为特别容易感染这种疾病，并迅速爆发并具有潜在的高死亡率。我们报告了巴西东南部圣埃斯皮里图州康复中心的麦哲伦企鹅（Spheniscus magellanicus）爆发禽疟疾的情况。 2015年8月和9月，共有89只麦哲伦企鹅（87只幼年企鹅和2只成年麦哲伦企鹅）在海洋动物研究与康复研究所接受护理。在 2 周内，8 个人 (9.0%) 发现了疟原虫感染，其中 4 人死亡（死亡率 = 4.5%，致死率 = 50%）。血涂片和线粒体细胞色素b基因测序显示存在Plasmodium luziSPMAG06、Plasmodium elongatumGRW06、Plasmodiumsp。 PHPAT01，疟原虫。 SPMAG10 和 Plasmodium cathemerium（测序未成功）。在感染 SPMAG06 谱系的个体中观察到两个不寻常的形态学特征：(a) 缺乏色素颗粒的聚集和 (b) 存在循环的红细胞外裂体。阳性个体的血液学结果（细胞压积、血浆总固体量、全血细胞计数）显示出与阴性个体的差异，具体取决于谱系，但对于所有疟原虫属，没有一致观察到的总体模式。疫情的流行病学和本研究中检测到的寄生虫谱系的系统地理学支持这样一种观点，即巴西接受康复治疗的企鹅的疟疾感染是当地鸟类区系，尤其是雀形目中传播的疟原虫溢出接种的结果。
Avian malaria is a mosquito-borne disease caused byPlasmodiumspp. protozoa, and penguins are considered particularly susceptible to this disease, developing rapid outbreaks with potentially high mortality. We report on an outbreak of avian malaria in Magellanic penguins (Spheniscus magellanicus) at a rehabilitation center in Espírito Santo, southeast Brazil. In August and September 2015, a total of 89 Magellanic penguins (87 juveniles and 2 adults) received care at Institute of Research and Rehabilitation of Marine Animals. Over a period of 2 weeks,Plasmodiuminfections were identified in eight individuals (9.0%), four of which died (mortality = 4.5%, lethality = 50%). Blood smears and sequencing of the mitochondrial cytochromebgene revealed the presence ofPlasmodium lutziSPMAG06,Plasmodium elongatumGRW06,Plasmodiumsp. PHPAT01,Plasmodiumsp. SPMAG10, andPlasmodium cathemerium(sequencing not successful). Two unusual morphological features were observed in individuals infected with lineage SPMAG06: (a) lack of clumping of pigment granules and (b) presence of circulating exoerythrocytic meronts. Hematological results (packed cell volume, plasma total solids, complete blood cell counts) of positive individuals showed differences from those of negative individuals depending on the lineages, but there was no overarching pattern consistently observed for allPlasmodiumspp. The epidemiology of the outbreak and the phylogeography of the parasite lineages detected in this study support the notion that malarial infections in penguins undergoing rehabilitation in Brazil are the result of the spillover inoculation by plasmodia that circulate in the local avifauna, especially Passeriformes.
登录
查看更多内容
新西兰小企鹅（Eudyptulaminor）因禽疟疾死亡的病例
影响因子：
1.4
作者：
DC Sijbranda;S. Hunter;L. Howe;B. Lenting;L. Argilla;B. Gartrell
通讯作者：
B. Gartrell
影响因子：
2.1
作者：
Bernotiene, Rasa;Palinauskas, Vaidas;Valkiunas, Gediminas
通讯作者：
Valkiunas, Gediminas
阿根廷北部圈养麦哲伦企鹅 (Spheniscus magellanicus) 中的禽疟疾（疟原虫属），2010 年
影响因子：
1.3
作者：
R. Vanstreels;F. Capellino;P. Silveira;É. Braga;S. Rodríguez;J. Loureiro;J. Catão
通讯作者：
J. Catão
巴西海岸麦哲伦企鹅冬季活动范围向北扩展的证据
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
G. P. M. Dantas;V. Almeida;Pryscilla Maracini;S. Serra;M. Chame;C. Kolesnikovas;S. Siciliano;C. Matias;J. F. Moura;Aurelea Mader;P. Serafini;R. Maurício;Sirotski Sobrinho
通讯作者：
Sirotski Sobrinho
保护迁徙的麦哲伦企鹅需要进行海洋分区
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
D. Stokes;P. D. Boersma;J. Casenave;P. García
通讯作者：
P. García