Calyptospora sp. in Brachyplatystoma vaillantii (Valenciennes, 1840) captured in salvaterra, Pará state, Brazil

DELOS: DESARROLLO LOCAL SOSTENIBLE Pub Date : 2024-01-25 DOI:10.55905/rdelosv17.n51-015

Caio Vitor da Conceição Costa, Flávia Letícia Gurjão De Andrade, Adriane dos Santos Miranda Lobato, Daralyns Borges Macedo, João Victor Morais Valente, Jessica dos Santos Lima Pantoja, D. T. da Silva, I. Hamoy, Edilson Rodrigues Matos

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Abstract

Coccidia of the Calyptosporidae family are parasites that infect a wide range of fish and aquatic invertebrates. Currently, the Calyptosporidae family is represented by species with a heteroxenic cycle, that is, they can infect more than one host, alternating between vertebrates and the definitive host, the fish. Currently, the diversity of species in the genus Calyptospora has been little investigated, which makes it difficult to understand the distribution and prevalence of infection of this group of microparasites in fish. In the present study, thirty specimens of the Brachyplatystoma vaillantii species, from the Paracauari River, in Salvaterra, Marajó Island, were examined. Of the total number of fish examined, 12 fish, 40% of the total, were parasitized by several mature and immature oocysts in the liver, each containing three to four ellipsoidal sporocysts. General morphology of the spores is characteristic of the genus Calyptospora.

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在巴西帕拉州 salvaterra 捕获的 Brachyplatystoma vaillantii（Valenciennes，1840 年）体内的 Calyptospora sp.

Calyptosporidae 科球虫是一种寄生虫，可感染多种鱼类和水生无脊椎动物。目前，Calyptosporidae 科的代表物种具有异氧周期，即它们可以感染多个宿主，在脊椎动物和最终宿主（鱼类）之间交替感染。目前，对 Calyptospora 属物种多样性的调查很少，因此很难了解这类微寄生虫在鱼类中的分布和感染率。在本研究中，研究人员对来自马拉霍岛萨尔瓦多帕拉考里河的 30 个 Brachyplatystoma vaillantii 种标本进行了检查。在受检的所有鱼类中，有 12 条鱼（占总数的 40%）的肝脏中寄生有多个成熟和未成熟的卵囊，每个卵囊含有 3 到 4 个椭圆形孢子囊。孢子的一般形态具有萼孢属的特征。

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