巴西南部巴拉那海岸搁浅的 Caretta caretta(林尼厄斯,1758 年)的组织病理学发现

Camila Roberta da Silva Ribeiro, Andressa Maria Rorato Nascimento de Matos, Camilla Domit, A. Bracarense
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摘要

Caretta caretta 是巴西的五种海龟之一,目前已被列为全球濒危物种。虽然健康评估对监测种群状况至关重要,但这种评估并不频繁,而且缺乏系统性。评估海龟的健康状况可以通过检查活体和死亡动物来进行。尸体在确定影响海龟物种的疾病和潜在威胁方面发挥着关键作用。因此,本研究介绍了 2015 年至 2021 年期间巴拉那海岸 20 只搁浅死亡的卡雷塔海龟的组织病理学研究结果。所有个体都进行了测量和尸体解剖。平均弯曲躯体长度(厘米)为 67.3 ± 6.9 (49.4 - 81.5)。13 只动物的身体状况良好,4 只一般,2 只较差,1 只未确定。有 14 只雌性、4 只雄性和 2 只性别不明的动物登记在册,平均年龄为 15.8 ± 3.89(9 - 24 岁)。80.0%的动物有人为交互作用的证据(10 次副渔获物交互作用、6 次海洋废弃物交互作用、2 次油类与海洋废弃物交互作用)。组织学变化主要影响肝脏、肺脏、脾脏和肾脏,主要表现为炎症浸润(间质性肺炎、嗜异性脾炎、肾炎、心内膜炎)、充血以及肝肾水肿变性。这项研究极大地促进了我们对巴拉那海岸搁浅的野生 C. caretta 的病理结果的了解,为了解这些动物的健康状况提供了宝贵的信息,并有助于保护这些动物的种群。
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Histopathological findings in stranded Caretta caretta (Linnaeus, 1758) on the Paraná coast, Southern Brazil
Caretta caretta, one of the five sea turtle species in Brazil, is currently listed as globally endangered. While health assessments are crucial for monitoring population status, they are infrequent and lack systematic implementation. Evaluating the health condition of sea turtles can occur through examinations of both live and deceased animals. Carcasses play a pivotal role in identifying diseases and potential threats impacting the species. Therefore, this study presents the histopathological findings from 20 dead stranded C. caretta along the Paraná coast between 2015 and 2021. All individuals underwent measurements, and necropsies were conducted. The mean curved carapace length (cm) was 67.3 ± 6.9 (49.4 – 81.5). Body condition was classified as good in 13 animals, fair in four, poor in two, and undetermined in one. Fourteen females, four males, and two undetermined sexes were registered, with a mean age of 15.8 ± 3,89 (ranging from 9 – 24) years. Evidence of anthropogenic interaction (10 bycatch interactions, 6 marine debris, 2 oil interactions combined with marine debris) was noted in 80.0% of the animals. Histological changes primarily affected the liver, lungs, spleen, and kidneys, with prominent alterations such as inflammatory infiltrate (interstitial pneumonia, heterophilic splenitis, nephritis, endocarditis), congestion, and hepatic and renal hydropic degeneration. This study significantly contributes to our understanding of pathological findings in stranded wild C. caretta on the Paraná coast, offering valuable insights into the health of these animals and aiding in the conservation efforts to protect their populations.
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