Cardicola laruei Short, 1953 (Digenea: Aporocotylidae) from Heart of Seatrout, Cynoscion spp., (Perciformes: Sciaenidae) in the Gulf of Mexico and Atlantic Ocean: Taxonomic Redescription, First Observations of Egg and Miracidium, and Comments on Geographic Distribution and Host Specificity

McVay, Matthew J.; Bakenhaster, Micah D.; Bullard, Stephen A.

doi:10.1654/4501.1

Cited by 23 publications

(10 citation statements)

References 23 publications

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“…data), we observed minute (< 5 μm in total length), putative spines on the surface of the oral sucker. Although spinous anterior suckers are well-documented among fish blood flukes (Aporocotylidae) (Bullard et al 2008, McVay et al 2011, Bullard 2012, 2013, Truong and Bullard 2013, this is the first report of spines associated with the oral sucker of a TBF. Although materials at our disposal herein precluded an ultrastructural study of these minute spines, a follow-up study treating them is planned once additional specimens have been collected and prepared.…”

Section: Spirorchismentioning

confidence: 86%

A new species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis cf. scripta from chicken turtle, Deirochelys reticularia (Emydidae), with an emendation and molecular phylogeny of Spirorchis

et al. 2016

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The new species is most easily differentiated from its congeners by the combination of having caeca that extend far beyond the genitalia, intercaecal genitalia positioned in the middle portion of the body, a testicular column that nearly abuts the caecal bifurcation, a cirrus sac positioned between the testes and ovary, a massive Mehlis' gland, an elongate, longitudinal metraterm that extends anteriad beyond the level of the ovary, a pre-ovarian genital pore, and a prominent, intercaecal Manter's organ. The specimens of S. cf. scripta differed from the holotype and published descriptions of Spirorchis scripta Stunkard, 1923 by several subtle morphological features, perhaps comprising intraspecific variation, but collectively warranted a detailed description herein. Based on examinations of the aforementioned specimens plus the holotype, paratypes and vouchers of morphologically-similar congeners, Spirorchis MacCallum, 1918 is emended to include the presence of oral sucker spines, a pharynx, lateral oesophageal diverticula ('plicate organ') and a median oesophageal diverticulum ('oeseophageal pouch'). Phylogenetic analysis of the nuclear large subunit rDNA (28S) recovered S. collinsi sister to Spirorchis picta Stunkard, 1923, > 99% similarity between S. cf. scripta and S. scripta, and a monophyletic Spirorchis MacCallum, 1918. No blood fluke infection has been reported previously from these drainages, Alabama, or this turtle species. This is the first new species of Spirorchis to be described from North America in 26 years. Keywords: taxonomy, Spirorchiidae, Spirhapalum, 28S phylogeny, BaracktremaTwenty two species of turtle blood flukes (TBF) ranging in North America are assigned to Spirorchis MacCallum, 1918, Hapalorhynchus Stunkard, 1922, Unicaecum Stunkard, 1925 and Vasotrema Stunkard, 1928. Collectively, they infect 16 species of freshwater turtles: four infect snapping turtles (Chelydridae), ten infect pond turtles (Emydidae), three infect mud/musk turtles (Kinosternidae) and five infect softshell turtles (Trionychidae) (see Platt 1993, 2002, Smith 1997a,b, Orélis-Ribeiro et al. 2014. One third (29 of 86; 34%) of the freshwater turtle species in North America range in rivers and lakes of Alabama (van Dijk et al. 2014, Guyer et al. 2015 and three of the 13 (23%) species of planorbid snails that range in Alabama (Johnson et al. 2013) are known to shed cercariae of Spirorchis spp. elsewhere (Wall 1939, 1940, 1941a,b, Pieper 1953, Goodchild and Kirk 1960, Holliman and Fisher 1968, Holliman et al. 1971). Yet, no TBF infection has been reported from a turtle or snail in Alabama and few (11 of 29; 38%) turtles that occur there are known as TBF hosts elsewhere (Smith 1997a,b).Parasitological examinations of two chicken turtles, Deirochelys reticularia (Latreille in Sonnini et Latreille) from Alabama rivers revealed infections by a new species of Spirorchis and Spirorchis cf. scripta. Herein, we describe these specimens and compare them to type materials of Spirorchis innominatus Ward, 1921 (type species), Spirorc...

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Section: Spirorchismentioning

confidence: 86%

A new species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis cf. scripta from chicken turtle, Deirochelys reticularia (Emydidae), with an emendation and molecular phylogeny of Spirorchis

et al. 2016

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“…this has been discussed fairly extensively (Bullard and overstreet 2003, Nolan and cribb 2006, 2012, Bullard 2010a, b, 2012, McVay et al 2011 and it is thought that juveniles or small adults of a given species can have a sucker whereas larger adults can lack that sucker. For example, McVay et al (2011) showed that the holotype of C. laruei lacks an evident sucker but that newly-collected materials comprising smaller adult specimens had a spinous anterior sucker with concentric rows of spines anterior to the mouth. the same seems true for small and large adult specimens of Cardicola parvus Bullard, Baker et de Buron, 2012 (Bullard, personal observations).…”

Section: Discussionmentioning

confidence: 99%

“…the egg for the vast majority of aporocotylid species has not been described, but that for several members of Cardicola has been well-documented from both wild and aquacultured fishes wherein intense infections of eggs in the gill can be associated with disease (see Bullard and overstreet 2002, 2004, Braicovich et al 2006, Holzer et al 2008, ogawa et al 2010, McVay et al 2011). Shirakashi et al (2012 used ITS2 sequence data to ascribe 'crescent' eggs infecting the afferent filament artery and 'oval' eggs infecting the gill lamellae of Pacific bluefin tuna (Thunnus orientalis) to Cardicola opisthorchis and Cardicola orientalis, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…are spindle-shaped (McVay et al 2011), even before a fully-developed, ciliated miracidium is evident within the egg. in contrast, C. langeli, C. currani, C. aurata and C. ambrosioi reportedly each have an oval egg.…”

Section: Discussionmentioning

confidence: 99%

“…Probable eggs infecting gill epithelium, spheroid (not spindle-shaped as in Cardicola laruei short, 1953 -see McVay et al 2011), lacking polar extensions, containing ciliated miracidium (Fig. 6).…”

Section: Cardicola Langeli Sp Nmentioning

confidence: 99%

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