Chris T. McAllister, John A. Hnida, Diane Vice, Samuel Fisher, Robert N. Fisher
{"title":"来自美国领土关岛的太平洋蓝尾石龙子（Emoia caeruleocauda）的新异孢子虫（Apicomplexa: Eimeriidae）。","authors":"Chris T. McAllister, John A. Hnida, Diane Vice, Samuel Fisher, Robert N. Fisher","doi":"10.1007/s11686-024-00860-9","DOIUrl":null,"url":null,"abstract":"<div><h3>Purpose</h3><p>Nothing is known about coccidians (Apicomplexa: Eimeriidae) from the Pacific blue-tailed skink, <i>Emoia caeruleocauda</i>. Here, we report mensural and morphometric data on a new species of <i>Isospora</i> from <i>E. caeruleocauda</i> from Guam, US Territory.</p><h3>Methods</h3><p>Feces from four <i>E. caeruleocauda</i> collected by hand in November 2023 were placed in individual vials containing 2.5% potassium dichromate. They were examined for sporulated oocysts after flotation in Sheather’s sugar solution, measured, and photographed.</p><h3>Results</h3><p>A single (25%) <i>E. caeruleocauda</i> was found to be passing oocysts representing a new species of <i>Isospora</i>. Oocysts of <i>Isospora guamensis</i> n. sp. are ellipsoidal to ovoidal with a bi-layered wall, measure (L × W) 16.5 × 11.8 μm, and have a length/width (L/W) ratio of 1.4; a micropyle and an oocyst residuum were absent but a polar granule was present. Sporocysts are ovoidal and measure 9.4 × 6.5 μm, L/W 1.4; Stieda and sub-Stieda bodies were present but a para-Stieda body was absent. The sporocyst residuum is composed various-sized granules in a compact rounded or irregular mass, sometimes dispersed between the sporozoites. The new species can be differentiated from all other isosporans from skinks by possessing the smallest oocysts known from this host family.</p><h3>Conclusion</h3><p>This is the first time an isosporan coccidian has been reported from <i>E. caeruleocauda</i> as well as the first report of a coccidian from a Guam-inhabiting skink.</p></div>","PeriodicalId":6932,"journal":{"name":"Acta Parasitologica","volume":"69 3","pages":"1359 - 1363"},"PeriodicalIF":1.2000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A New Isosporan (Apicomplexa: Eimeriidae) from the Pacific Blue-Tailed Skink, Emoia caeruleocauda (Sauria: Scincidae: Eugongylinae), from Guam, U.S. Territory\",\"authors\":\"Chris T. McAllister, John A. Hnida, Diane Vice, Samuel Fisher, Robert N. Fisher\",\"doi\":\"10.1007/s11686-024-00860-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Purpose</h3><p>Nothing is known about coccidians (Apicomplexa: Eimeriidae) from the Pacific blue-tailed skink, <i>Emoia caeruleocauda</i>. Here, we report mensural and morphometric data on a new species of <i>Isospora</i> from <i>E. caeruleocauda</i> from Guam, US Territory.</p><h3>Methods</h3><p>Feces from four <i>E. caeruleocauda</i> collected by hand in November 2023 were placed in individual vials containing 2.5% potassium dichromate. They were examined for sporulated oocysts after flotation in Sheather’s sugar solution, measured, and photographed.</p><h3>Results</h3><p>A single (25%) <i>E. caeruleocauda</i> was found to be passing oocysts representing a new species of <i>Isospora</i>. Oocysts of <i>Isospora guamensis</i> n. sp. are ellipsoidal to ovoidal with a bi-layered wall, measure (L × W) 16.5 × 11.8 μm, and have a length/width (L/W) ratio of 1.4; a micropyle and an oocyst residuum were absent but a polar granule was present. Sporocysts are ovoidal and measure 9.4 × 6.5 μm, L/W 1.4; Stieda and sub-Stieda bodies were present but a para-Stieda body was absent. The sporocyst residuum is composed various-sized granules in a compact rounded or irregular mass, sometimes dispersed between the sporozoites. The new species can be differentiated from all other isosporans from skinks by possessing the smallest oocysts known from this host family.</p><h3>Conclusion</h3><p>This is the first time an isosporan coccidian has been reported from <i>E. caeruleocauda</i> as well as the first report of a coccidian from a Guam-inhabiting skink.</p></div>\",\"PeriodicalId\":6932,\"journal\":{\"name\":\"Acta Parasitologica\",\"volume\":\"69 3\",\"pages\":\"1359 - 1363\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2024-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Parasitologica\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11686-024-00860-9\",\"RegionNum\":3,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PARASITOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Parasitologica","FirstCategoryId":"3","ListUrlMain":"https://link.springer.com/article/10.1007/s11686-024-00860-9","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PARASITOLOGY","Score":null,"Total":0}
A New Isosporan (Apicomplexa: Eimeriidae) from the Pacific Blue-Tailed Skink, Emoia caeruleocauda (Sauria: Scincidae: Eugongylinae), from Guam, U.S. Territory
Purpose
Nothing is known about coccidians (Apicomplexa: Eimeriidae) from the Pacific blue-tailed skink, Emoia caeruleocauda. Here, we report mensural and morphometric data on a new species of Isospora from E. caeruleocauda from Guam, US Territory.
Methods
Feces from four E. caeruleocauda collected by hand in November 2023 were placed in individual vials containing 2.5% potassium dichromate. They were examined for sporulated oocysts after flotation in Sheather’s sugar solution, measured, and photographed.
Results
A single (25%) E. caeruleocauda was found to be passing oocysts representing a new species of Isospora. Oocysts of Isospora guamensis n. sp. are ellipsoidal to ovoidal with a bi-layered wall, measure (L × W) 16.5 × 11.8 μm, and have a length/width (L/W) ratio of 1.4; a micropyle and an oocyst residuum were absent but a polar granule was present. Sporocysts are ovoidal and measure 9.4 × 6.5 μm, L/W 1.4; Stieda and sub-Stieda bodies were present but a para-Stieda body was absent. The sporocyst residuum is composed various-sized granules in a compact rounded or irregular mass, sometimes dispersed between the sporozoites. The new species can be differentiated from all other isosporans from skinks by possessing the smallest oocysts known from this host family.
Conclusion
This is the first time an isosporan coccidian has been reported from E. caeruleocauda as well as the first report of a coccidian from a Guam-inhabiting skink.
期刊介绍：
Acta Parasitologica is an international journal covering the latest advances in the subject.
Acta Parasitologica publishes original papers on all aspects of parasitology and host-parasite relationships, including the latest discoveries in biochemical and molecular biology of parasites, their physiology, morphology, taxonomy and ecology, as well as original research papers on immunology, pathology, and epidemiology of parasitic diseases in the context of medical, veterinary and biological sciences. The journal also publishes short research notes, invited review articles, book reviews.
The journal was founded in 1953 as "Acta Parasitologica Polonica" by the Polish Parasitological Society and since 1954 has been published by W. Stefanski Institute of Parasitology of the Polish Academy of Sciences in Warsaw. Since 1992 in has appeared as Acta Parasitologica in four issues per year.
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