Amphiorchis stacyi n. sp. (Digenea: Spirorchiidae) in the heart of a green turtle from Florida, USA and the literature review of Amphiorchis (Price, 1934)

Werneck, Max Rondon; Greiner, Ellis C.

doi:10.1007/s00436-018-5846-2

Cited by 4 publications

(6 citation statements)

References 10 publications

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“…differs from A. stacyi because the vitelline follicles begin at the level of the caecal bifurcation and they are smaller than those in A. stacyi . Also, in present specimens the caeca are asymmetric, whereas in A. stacyi they are symmetric (Werneck and Greiner, 2018).…”

Section: Resultsmentioning

confidence: 45%

“…Taxonomic keys and specific literature were used for morphological identification and morphometric comparisons, respectively (Price, 1934; Oguro, 1938; Simha and Chattopadhyaya, 1970, 1978; Fischthal and Acholonu, 1976; Gupta and Mehrotra, 1981; Platt, 2002; Werneck and Greiner, 2018). Specimens here found were determined by comparison with available voucher specimens collected by one of the authors of this manuscript (M. Werneck).…”

Section: Methodsmentioning

confidence: 99%

“…Specimens here found were determined by comparison with available voucher specimens collected by one of the authors of this manuscript (M. Werneck). Those specimens included A. caborojoensis (Helminthological Collection of the Biosciences Institute (CHIBB), numbers: 1392, 1406 and 6211), A. solus (CHIBB, numbers: 4044 and 7843), A. indicus (CHIBB, numbers: 4046, 4048, 4991 and 4995) and A. stacyi (U.S. National Parasite Collection, number: 1482618) (Werneck et al 2008, 2011; Dutra et al 2012; Werneck and Silva 2013; Werneck and Medeiros 2016; Werneck and Greiner 2018).…”

Section: Methodsmentioning

confidence: 99%

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Is Amphiorchis (Digenea: Spirorchiidae) an exclusive parasite of sea turtles?

Palumbo

Werneck²,

Díaz

2019

Helminthologia

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SummaryThe side-necked turtle Hydromedusa tectifera commonly inhabits the tributary streams of the Rio de La Plata and occasionally is found in brackish waters within the estuary of the Rio de La Plata. Few studies have been conducted on its parasitic fauna, especially in Argentina. In the present work Amphiorchis sp. is registered for the first time in a freshwater turtle, expanding the knowledge about the specificity of the genus that until now was considered inhabiting only marine turtles.

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Section: Resultsmentioning

confidence: 45%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Is Amphiorchis (Digenea: Spirorchiidae) an exclusive parasite of sea turtles?

Palumbo

Werneck²,

Díaz

2019

Helminthologia

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“…Several species of sea turtles have been affected in various ocean basins. Severe fluke lesions have been reported in Florida (13,14), Hawaii (15), Costa Rica (16,17), Brazil (18,19), and Italy (12,20), with Australia experiencing the highest prevalence and greatest mortality rates (21)(22)(23). This study reports the first case of Learedius learedi infection associated with bilateral blindness in a green sea turtle of the Northern Red Sea.…”

Section: Introductionmentioning

confidence: 77%

Case report: Blindness associated with Learedius learedi trematode infection in a green sea turtle, Chelonia mydas, of the northern Red Sea

Morick,

Bachmann,

Shemesh

et al. 2023

Front. Vet. Sci.

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Spirorchiid blood flukes are widespread in sea turtles, causing disease and mortality in their populations, with high prevalence in several ocean basins. Besides being leading parasitic causes of sea turtle strandings in several parts of the world, these infectious agents can cause endocarditis, vasculitis, thrombosis, miliary egg granulomas, and aneurysms, which ultimately may compromise the survival of green sea turtles. More severe cases may also result in multifocal granulomatous meningitis or pneumonia, both of which can be fatal. Herein, we report the first case of severe trematode infection, Caused by Learedius learedi, in a green sea turtle in the northern Red Sea; this infection is associated with bilateral blindness. Necropsy revealed multiple granulomas with intralesional trematode eggs in the optic nerve, eyes, spleen, heart, and lungs. The parasite was identified as Learedius learedi through specific primers of the ribosomal genome and COI sequences obtained from GenBank. Altogether, these findings emphasize the importance of recognizing the systemic nature of this particular fluke infection to ultimately protect the lives of these marine animals and ensure the sustainability of these species in the wild.

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“…All known transmission routes of Neorickettsia species in mammals are by secondary ingestion of infected digenean trematodes. A large variety of trematode parasites have been reported to infect different species of sea turtles in the Atlantic Ocean, including Kemp's ridley turtles and green turtles (Cribb et al, 2016;Innis et al, 2009;Jerdy et al, 2016;Stacy et al, 2017;Werneck & Greiner, 2018). It is likely that one of these trematode species is the vector of Candidatus N. cheloniidis.…”

Section: Discussionmentioning

confidence: 99%

Identification of a novel Neorickettsia species in a Kemp's ridley sea turtle with granulomatous nephritis and development of a quantitative PCR assay

Liguori

Stacy

Fischer

et al. 2022

Transbounding Emerging Dis

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An adult male Kemp's ridley turtle was found dead on the coast of Kenedy County, Texas, in August 2019 with bilateral severe, diffuse granulomatous nephritis. Pan‐bacterial 16S rRNA gene polymerase chain reaction (PCR) and amplicon sequencing of affected tissue indicated the presence of a Neorickettsia. Neorickettsia is a genus of obligate intracellular Alphaproteobacteria that are transmitted by digenean trematodes. For further characterization, primers were designed to amplify and sequence the groEL gene. Phylogenetic analysis found that the organism was distinct from other known species to a degree consistent with a novel species. Immunohistochemistry using an antibody directed against a Neorickettsia surface protein showed bacterial clusters within the renal granulomas. A species‐specific quantitative PCR was designed and detected the organism within the liver and colon of the index case. A quantitative PCR survey of grossly normal kidneys opportunistically collected from additional stranded sea turtle kidneys detected this organism in five of 15 Kemp's ridley turtles, two of nine green turtles, and neither of two loggerhead turtles. Recognition of this novel organism in an endangered species is concerning; additional work is underway to further characterize the potential of this organism as a pathogen of sea turtles.

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Amphiorchis stacyi n. sp. (Digenea: Spirorchiidae) in the heart of a green turtle from Florida, USA and the literature review of Amphiorchis (Price, 1934)

Abstract: The present paper reports the occurrence of the seventh species in the genus Amphiorchis (Digenea: Spirorchiidae) collected from the heart of a green turtle found in Florida, USA. A taxonomic key to the species of Amphiorchis and a literature review for the genus are presented.

Cited by 4 publications

References 10 publications

Is Amphiorchis (Digenea: Spirorchiidae) an exclusive parasite of sea turtles?

Is Amphiorchis (Digenea: Spirorchiidae) an exclusive parasite of sea turtles?

Case report: Blindness associated with Learedius learedi trematode infection in a green sea turtle, Chelonia mydas, of the northern Red Sea

Identification of a novel Neorickettsia species in a Kemp's ridley sea turtle with granulomatous nephritis and development of a quantitative PCR assay

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