A New Isosporan (Apicomplexa: Eimeriidae) from the Pacific Blue-Tailed Skink, Emoia caeruleocauda (Sauria: Scincidae: Eugongylinae), from Guam, U.S. Territory.
Emoia caeruleocauda
Apicomplexa
Coccidia
Eimeriidae
Guam
Pacific blue-tailed skink
Scincidae
U.S. Territory
Journal
Acta parasitologica
ISSN: 1896-1851
Titre abrégé: Acta Parasitol
Pays: Switzerland
ID NLM: 9301947
Informations de publication
Date de publication:
28 Jun 2024
28 Jun 2024
Historique:
received:
13
01
2024
accepted:
03
06
2024
medline:
28
6
2024
pubmed:
28
6
2024
entrez:
28
6
2024
Statut:
aheadofprint
Résumé
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. 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. 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. 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.
Identifiants
pubmed: 38940982
doi: 10.1007/s11686-024-00860-9
pii: 10.1007/s11686-024-00860-9
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer Nature Switzerland AG.
Références
Hanley KA, Vollmer DM, Case TJ (1995) The distribution and prevalence of helminths, coccidia and blood parasites in two competing species of gecko: implications for apparent competition. Oecologia 102:227–235. https://doi.org/10.1007/bf00333254
doi: 10.1007/bf00333254
Hileman ET, Eichelberger BA, Liske-Clark J, Barnhart PD, Reed RN, Yackel Adams AA, Nafus MG (2020) Landscape dominance of introduced herpetofauna on an oceanic island. Glo Ecol Conserv 22:e00984. https://doi.org/10.1016/j.gecco.2020.e00984
doi: 10.1016/j.gecco.2020.e00984
ICZN (2012) International Commission on Zoological nomenclature: amendment of articles 8, 9, 10, 21 and 78 of the International Code of Zoological nomenclature to expand and refine methods of publication. Zootaxa 3450:1–7. https://doi.org/10.11646/zootaxa.3450.1.1
doi: 10.11646/zootaxa.3450.1.1
McAllister CT, Duszynski DW, Austin CC, Fisher RN (2013a) A new species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) from Carlia spp. (Sauria: Scincidae) from Papua New Guinea. Syst Parasitol 86:53–57. https://doi.org/10.1007/s11230-013-9429-4
doi: 10.1007/s11230-013-9429-4
pubmed: 23949649
McAllister CT, Duszynski DW, Fisher RN (2013b) Two new species of Isospora (Apicomplexa: Eimeriidae) from skinks, Emoia spp. (Sauria: Scincidae), from Fiji and Papua New Guinea. J Parasitol 99:677–679. https://doi.org/10.1645/12-171.1
doi: 10.1645/12-171.1
pubmed: 23517292
McAllister CT, Duszynski DW, Austin CC, Fisher RN (2013c) New host and distributional records for Cryptosporidium sp. (Apicomplexa: Cryptosporidiidae) from lizards (Sauria: Gekkonidae, Scincidae) from the Cook Islands and Vanuatu, South Pacific. Comp Parasitol 80:297–300. https://doi.org/10.1654/4646.1
doi: 10.1654/4646.1
McAllister CT, Duszynski DW, Fisher RN, Austin CC (2013d) Three new species of coccidia (Apicomplexa: Eimeriidae) from skinks, Lipinia spp. (Sauria: Scincidae), from Oceania. J Parasitol 99:1086–1088. https://doi.org/10.1645/13-276.1
doi: 10.1645/13-276.1
pubmed: 23984908
McAllister CT, Seville RS, Duszynski DW, Bush SE, Fisher RN, Austin CC (2013e) Two new species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) from emerald tree skinks, Lamprolepis smaragdina (lesson) (Sauria: Scincidae) from Papua New Guinea and the Philippines. Syst Parasitol 86:165–171. https://doi.org/10.1007/s11230-013-9442-7
doi: 10.1007/s11230-013-9442-7
pubmed: 24048748
pmcid: 3936315
McAllister CT, Duszynski DW, Fisher RN, Austin CC (2014a) Two new species of Eimeria (Apicomplexa, Eimeriidae) from tree skinks, Prasinohaema spp. (Sauria: Scincidae), from Papua New Guinea. Acta Parasitol 59:263–266. https://doi.org/10.2478/s11686-014-0239-x
doi: 10.2478/s11686-014-0239-x
pubmed: 24827096
McAllister CT, Duszynski DW, Fisher RN, Austin CC (2014b) Four new species of coccidia (Apicomplexa: Eimeriidae) from Owen Stanley skinks, Papuascincus stanleyanus (Sauria: Scincidae), from Papua New Guinea. Folia Parasitol 61:195–200. https://doi.org/10.14411/fp.2014.018
doi: 10.14411/fp.2014.018
McAllister CT, Duszynski DW, Fisher RN, Austin CC (2014c) A new species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) from the Solomon ground skink, Sphenomorphus -solomonis (Boulenger) (Sauria: Scincidae) from Papua New Guinea. Syst Parasitol 87:83–86. https://doi.org/10.1007/s11230-013-9455-2
doi: 10.1007/s11230-013-9455-2
pubmed: 24395577
McAllister CT, Duszynski DW, Austin CC, Fisher RN (2017) Four new species of Eimeria (Apicomplexa: Eimeriidae) from Emoia spp. skinks (Sauria: Scincidae), from Papua New Guinea and the Insular Pacific. J Parasitol 103:103–110. https://doi.org/10.1645/16-67
doi: 10.1645/16-67
pubmed: 27754773
Modrý D, Jirků M (2006) Three new species of coccidia (Apicomplexa: Eimeriorina) from the marbled-throated skink, Marmorosphax t-ricolor Bavay, 1869 (Reptilia: Scincidae), endemic to New Caledonia with a taxonomic revision of Eimeria spp. from scincid hosts. Parasitol Res 99:419–428. https://doi.org/10.1007/s00436-005-0106-7
doi: 10.1007/s00436-005-0106-7
pubmed: 16596416
Rodda GH, Fritts TH, Reichel JD (1991) The distributional patterns of reptiles and amphibians in the Mariana Islands. Micronesica 24:195–210
Schneider A (1881) Sur les psorospermies oviformes ou coccidies. Especes nouvelles Ou peuconnues. Arch Zool Exp Gen 9:387–404
Uetz P, Freed P, Aguilar R, Reyes F, Kudera J, Hošek J (eds) (2023) The Reptile Database. http://www.reptile-database.org , accessed 18 December 2023
Wilber PG, Duszynski DW, Upton SJ, Seville RS, Corliss JO (1998) A revision of the taxonomy and nomenclature of the Eimeria spp. (Apicomplexa: Eimeriidae) from rodents in the Tribe Marmotini (Sciuridae). Syst Parasitol 39:113–135. https://doi.org/10.1023/a:1005914010087
doi: 10.1023/a:1005914010087