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1 June 2016 Rhinella marina (Amphibia: Bufonidae) Versus Rhabdias paraensis (Nematoda: Rhabdiasidae): Expanding the View on a Natural Infection
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Abstract

Amphibian and reptile lungs are frequently infected with Rhabdias parasites, and this condition ultimately leads to reduced survival, performance, and growth because of granulomatous inflammation, nodule formation, and nematodal pneumonia onset. Here we investigate the histopathological features of naturally infected Rhinella marina by the lung nematode Rhabdias paraensis. A total of 10 host animals were captured in peridomiciliar areas in the eastern Brazilian Amazon, and anatomic–histological analyses were performed on both the infected and non-infected lungs of these amphibians. Helminths were usually found within the secondary and primary septa of infected lungs whereas parasites were not detected within vessels or adhering to tissues. In addition, we observed discrete erythrocytes, diapedesis foci, few granulocytes and erythrocytes in the interseptal spaces, discrete cell infiltration, and a small number of melanomacrophages, and no granulomas or cysts were observed. New aspects related to changes in tissue and helminth–host interactions are discussed for the relationship of R. paraensis × Rhi. marina from the Amazon region.

Jeannie Nascimento dos Santos, Djane Clarys Baia da Silva, Lucas Aristóteles das Neves Feitosa, Adriano Penha Furtado, Elane Guerreiro Giese, and Francisco Tiago de Vasconcelos Melo "Rhinella marina (Amphibia: Bufonidae) Versus Rhabdias paraensis (Nematoda: Rhabdiasidae): Expanding the View on a Natural Infection," Journal of Parasitology 102(3), (1 June 2016). https://doi.org/10.1645/15-944
Received: 21 December 2015; Accepted: 1 March 2016; Published: 1 June 2016
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