Comparative Parasitology最新文献

{"title":"Susceptibility of Channel Catfish (Ictalurus punctatus), Blue Catfish (Ictalurus furcatus), and Their Commercially Cultured Hybrid to Metazoan Parasite Infection in Earthen Pond Aquaculture","authors":"Triet N. Truong, S. Bullard","doi":"10.1654/1525-2647-88.1.93","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.93","url":null,"abstract":"ABSTRACT: We herein document the metazoan parasite component communities of channel catfish (Ictalurus punctatus), blue catfish (Ictalurus furcatus), and their commercially cultured hybrid (female I. punctatus × male I. furcatus) communally stocked as parasite-free fingerlings into each of 3 experimental earthen ponds (each pond harbored channel catfish, blue catfish, and hybrid catfish). The fundamental objective of this work was to test the hypothesis that hybrid catfish exhibit less susceptibility to infection by metazoan parasites than do their parental species. Fingerlings of each catfish species from each pond were parasitologically examined monthly for 1 yr. A total of 112 channel catfish, 74 blue catfish, and 209 hybrid catfish were necropsied; collectively resulting in the detection of 14 metazoan parasite species. Channel catfish had the most diverse component community (12 species: 3 myxozoans, 2 monogenoids, 3 cestodes, 1 nematode, 1 unionid, and 2 copepods) followed by hybrid catfish (11 species: 3 myxozoans, 2 monogenoids, 2 cestodes, 1 nematode, 1 unionid, and 2 copepods) and blue catfish (6 species: 1 myxozoan, 2 monogenoids, 2 cestodes, and 1 copepod). These results do not support the assertion that hybrid catfish are demonstrably more resistant to parasitic infection than either parental species. New host–parasite records herein comprise Corallotaenia intermedia (Fritts, 1959) Freze, 1965, and Corallotaenia parafimbriata (Befus and Freeman, 1973) Scholz, de Chambrier, Mariaux, and Kucha, 2011 for channel catfish; Henneguya sp., C. parafimbriata, and Neoergasilus japonicus (Harada, 1930) Yin, 1956 for blue catfish; and Henneguya adiposa Minchew, 1977, Henneguya bulbosus Rosser, Griffin, Quiniou, Khoo, and Pote, 2014, Ligictaluridus mirabilis (Mueller, 1937) Beverley-Burton, 1985, Ligictaluridus pricei (Mueller, 1936) Beverley-Burton, 1984, Essexiella fimbriata (Essex, 1928) Scholz, de Chambrier, Mariaux, and Kucha, 2011, C. parafimbriata, Spiroxys sp., Pyganodon sp., N. japonicus, and Achtheres sp. for hybrid catfish. To our knowledge, this is the most extensive parasitological study of this particular hybrid catfish, or any hybrid catfish, published to date.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"93 - 112"},"PeriodicalIF":0.5,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44608875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Interspecific Interactions on Infracommunities of Helminths Parasitizing Creek Chub (Semotilus atromaculatus)","authors":"M. Barger","doi":"10.1654/1525-2647-88.1.84","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.84","url":null,"abstract":"ABSTRACT: Natural infections of Allocreadium lobatum Wallin, 1909 (Trematoda), Proteocephalus sp. (Cestoda), Rhabdochona canadensis Moravec and Arai, 1971 (Nematoda), Paulisentis missouriensis Keppner, 1974 (Acanthocephala), and Schyzocotyle acheilognathi (Yamaguti, 1934) (Cestoda) in the intestine of creek chub (Semotilus atromaculatus) were analyzed to determine whether patterns of interspecific competition were evident. Data from nearly 2 decades of sampling from the same system were analyzed for patterns of co-occurrence and abundance consistent with negative interactions. Co-occurrence analyses (null models and logistic regression) did not detect negative associations among parasite species. Positive associations among species were more common in null model comparisons. Correlation analyses demonstrated some significant negative correlations between the abundances of pairs of parasite species in some samples, but the overwhelming majority of correlations were insignificant or positive. Previous work did not detect negative microhabitat interactions among the most common helminths studied herein, and together, these results suggest the parasite communities of creek chub in the study area are absent any substantial effect of antagonistic or other negative interspecific interactions. Differences in transmission rate, mode, and spatiotemporal variation are likely dominant processes explaining the patterns observed in the present investigation.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"84 - 92"},"PeriodicalIF":0.5,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48546309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Host Record for Clinostomum cf. marginatum (Trematoda: Digenea: Clinostomidae) from the Endemic Salado Salamander, Eurycea chisholmensis (Caudata: Plethodontidae), from the Edwards Plateau, Texas, U.S.A.","authors":"C. T. McAllister, Zachary C. Adcock, Andrea Villamizar-Gomez, Ryan M. Jones, M. Forstner","doi":"10.1654/1525-2647-88.1.76","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.76","url":null,"abstract":"ABSTRACT: Macroscopic examination of 622 Salado salamanders, Eurycea chisholmensis Chippindale, Price, Wiens and Hillis, 2000, collected between June 2018 and July 2020 from 3 springs in Williamson County, Texas, U.S.A., revealed the presence of encapsulated metacercariae of Clinostomum cf. marginatum (“yellow grub”) in 3 (0.5%) hosts. Two of these 3 salamanders were examined and released unharmed per permit requirements, but 1 was found dead, and it harbored 6 total metacercariae, 4 on the head region (including 1 behind the left eye), 1 near the left front leg, and 1 in the tail. Morphological identification of C. cf. marginatum was achieved by comparison to previous accounts. Molecular identification was accomplished by comparing sequence homology and phylogenetic analysis using an 828 base pair partial sequence of the internal transcribed spacer region. This is the first report of any parasite from E. chisholmensis, a federally threatened species.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"76 - 83"},"PeriodicalIF":0.5,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48795699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors Affecting the Infection Intensity of the Azygiid Trematodes Proterometra macrostoma and Leuceruthrus micropteri Infecting Centrarchid Fish from North Elkhorn Creek, Kentucky, U.S.A.","authors":"R. Rosen, M. Andrews, Yogesh Budhathoki, Hannah Jackson, Bernadette Kwisera, Joseph Mecham, Sarah Staat, Marranne J Conge","doi":"10.1654/1525-2647-88.1.70","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.70","url":null,"abstract":"ABSTRACT: Although there are several similarities in the life cycles of the azygiid trematodes Leuceruthrus micropteri and Proterometra macrostoma, their prevalence in their snail intermediate host and infection intensity in their centrarchid fish definitive hosts at North Elkhorn Creek, Kentucky, U.S.A., are markedly different. Here, we provide evidence for factors affecting their infection intensity in centrarchids based on (1) duration of cercarial swimming, (2) conditions and time required for release of the distome body from the cercarial tail chamber in the fish stomach, and (3) possible differences in the developmental rate of worms in a common definitive host. Cercariae of P. macrostoma swam considerably longer than those of L. micropteri; no cercariae of L. micropteri were observed swimming off of the bottom of beakers after 8 hr, whereas 67% of the P. macrostoma cercariae were still swimming after 13 hr at 20°C. Almost all of the P. macrostoma distomes were released from their cercarial tail chambers in vitro after 60 min at pHs 1.5, 2.0, and 2.5 with and without 0.5% pepsin. Similarly, nearly all L. micropteri cercariae were released from their cercarial tail chamber at pH 1.5 with and without pepsin; however, they did not emerge at pHs 2.0 or 2.5 without pepsin. Although the emergence of the L. micropteri distome was stimulated by the addition of pepsin in the higher pH values, it was markedly slower than that of P. macrostoma. By contrast, in experimental infections of largemouth bass Micropterus salmoides at 24.6°C, all distomes of L. micropteri and P. macrostoma completely emerged from their tail chambers and were attached to the stomach mucosa of their bass hosts after 20 min postinfection (PI). Additional experimental infections of largemouth bass showed no increase in body length or width for P. macrostoma distomes on day 12, 21, or 31 PI, but an increase was apparent in the body length and width for L. micropteri distomes on days 21 and 31 PI at 24.6°C. No egg and only anlagen of testes and ovary were observed in L. micropteri by day 31 PI, whereas P. macrostoma adults contained fully mature eggs with miracidia by this time.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"70 - 75"},"PeriodicalIF":0.5,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43650721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endoparasites of the Golden Grass Skink Heremites auratus (Linnaeus, 1758) (Squamata: Scincidae) from Turkey","authors":"H. S. Yildirimhan, N. Sümer, C. Bursey, M. Yıldız, Buket Eylek, M. Kamran, Bahadır Akman","doi":"10.1654/1525-2647-88.1.67","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.67","url":null,"abstract":"ABSTRACT: We examined 35 golden grass skinks Heremites auratus (Linnaeus, 1758) (Squamata: Scincidae), obtained from various locations in Turkey, for helminth parasites. We found 1 species of Cestoda, Mesocestoides sp., and 7 species of Nematoda: Parapharyngodon dogieli, Parapharyngodon lilfordi, Parapharyngodon psammodromi, Pharyngodon mamillatus, Spauligodon eremiasi, Spauligodon sp., and Thubunaea baylisi.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"67 - 69"},"PeriodicalIF":0.5,"publicationDate":"2021-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46747895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gastrointestinal Helminths of Four Lizard Species (Squamata: Phrynosomatidae and Teiidae) from Mixteca Region, Oaxaca, Mexico","authors":"José M. Ocampo-Salinas, R. Rosas-Valdez, E. A. Martínez-Salazar","doi":"10.1654/1525-2647-88.1.51","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.51","url":null,"abstract":"ABSTRACT: Sixty-eight lizards representing 4 species (Aspidoscelis mexicanus, Sceloporus horridus, Sceloporus ochoterenae, and Urosaurus bicarinatus) collected from the locality of Santiago Tamazola in the Mixteca Region of Oaxaca, Mexico were examined for gastrointestinal helminths. One species of Cestoda, Mesocestoides sp. (tetrathyridium larvae), and 2 species of Nematoda, Physaloptera retusa and Spauligodon garciaprietoi were found. Physaloptera retusa had the highest prevalence (85%) in S. horridus and was found parasitizing all 4 lizard species, and S. garciaprietoi had the most numerous helminth (n = 626) in A. mexicanus. The helminths are generalist and have indirect life cycles with the exception of S. garciaprietoi. We provided new host and distribution records for the 3 helminth species (Mesocestoides sp., P. retusa, and S. garciaprietoi) and present the first helminth reports for S. horridus, S. ochoterenae, and U. bicarinatus. Further, Mesocestoides sp. tetrathyridia is reported for the first time in Oaxaca State. This work contributes to the helminth fauna associated with lizards from Mexico.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"51 - 66"},"PeriodicalIF":0.5,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41586691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endohelminths from Three Species of Frogs, Nyctixalus pictus, Philautus hosii, and Rhacophorus pardalis (Anura: Rhacophoridae) from Borneo, Malaysia","authors":"S. Goldberg, C. Bursey","doi":"10.1654/1525-2647-88.1.46","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.46","url":null,"abstract":"ABSTRACT: Three species of frogs (Rhacophoridae) from Borneo, Malaysia were examined for helminths: Nyctixalus pictus (n = 4), Philautus hosii (n = 6), and Rhacophorus pardalis (n = 12). We found 3 species of Nematoda, Batrachostrongylus longispiculus, Cosmocerca ornata, and Seuratascaris numidica, 1 species of Cestoda, Cylindrotaenia sp., and 1 species of Acanthocephala, Pseudoacanthocephalus bufonis. No helminth species occurred in more than 1 frog species. The most abundant helminth (7) was C. ornata in R. pardalis. The 3 species of frogs are parasitized by helminths that also infect other species of anurans. Five new host records are reported. A table summarizing helminth records in anurans from Borneo is presented.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"46 - 50"},"PeriodicalIF":0.5,"publicationDate":"2021-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49302041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parasites (Monogenoidea, Cestoda, Nematoda) of the Banded Pygmy Sunfish, Elassoma zonatum Jordan (Perciformes: Elassomatidae), from Arkansas and Oklahoma, U.S.A.","authors":"C. T. McAllister, D. Cloutman, H. Robison","doi":"10.1654/1525-2647-88.1.41","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.41","url":null,"abstract":"ABSTRACT: Between January 2013 and September 2016, 14 juvenile and adult Banded Pygmy Sunfish, Elassoma zonatum Jordan, were collected in southwestern Arkansas (n = 13) and southeastern Oklahoma (n = 1) and examined for parasites. Five (36%) were infected, including 3 (21%) harboring the monogenean, Gyrodactylus heterodactylus Rogers and Wellborn, 2 (14%) with Proteocephalus sp. plerocercoids, and 5 (36%) with larval nematodes, Spiroxys sp. We document a new host as well as a new geographic distributional record for parasites of E. zonatum.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"41 - 45"},"PeriodicalIF":0.5,"publicationDate":"2021-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45615323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Species of Tapeworm in the Genus Stillabothrium (Rhinebothriidea: Escherbothriidae) from a Stingray from Borneo","authors":"Kaylee S. Herzog, Rebecca S. Meininger, F. Reyda","doi":"10.1654/1525-2647-88.1.34","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.34","url":null,"abstract":"ABSTRACT: Examination of spiral intestines from Himantura tutul Borsa, Durand, Shen, Arlyza, Solihin, and Berrebi, 2013 (=Himantura uarnak 3 sensu Naylor et al. [2012]), collected from Malaysian Borneo revealed the presence of a new species of tapeworm belonging to the genus Stillabothrium (Rhinebothriidea: Escherbothriidae). Stillabothrium borneoense n. sp. Herzog, Meininger, and Reyda is assigned to the genus based on its possession of a scolex with 4 bothridia divided into a distinct anterior region with facial loculi that are oriented horizontally and a distinct posterior region with facial loculi that are oriented vertically. The new species is distinguished from its congeners by features of the scolex and proglottids, including a vagina that recurves well anterior to the cirrus sac, as well as a unique locular arrangement not previously reported for members of this genus: 4 horizontally oriented loculi in the anterior region of the bothridia and 7 vertically oriented loculi in the posterior region of the bothridia. Stillabothrium borneoense n. sp. expands both known morphological variation and known host associations within the genus.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"34 - 40"},"PeriodicalIF":0.5,"publicationDate":"2021-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44163919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parasites of Southern Short-Tailed Shrews, Blarina carolinensis (Mammalia: Eulipotyphla: Soricidae) from Arkansas and Oklahoma, U.S.A.","authors":"C. T. McAllister, J. Kinsella, L. Durden, S. Greiman, D. Richardson, V. Tkach","doi":"10.1654/1525-2647-88.1.22","DOIUrl":"https://doi.org/10.1654/1525-2647-88.1.22","url":null,"abstract":"ABSTRACT: From November 2016 to October 2020, 14 adult southern short-tailed shrews, Blarina carolinensis (Bachman), were collected from Arkansas (n = 10) and Oklahoma (n = 4) and examined for parasites. All were infected and/or infested with various endo- and ectoparasites, including 3 trematodes (Brachylaima thompsoni, Ectosiphonus rhomboideus, Panopistus pricei), a cestode (Cryptocotylepis anthocephalus), 2 nematodes (Longistriata caudabullata and larval Porrocaecum sp.), an acanthocephalan cystacanth (Centrorhynchus conspectus), 3 mites (Olistrophorus blarina, Echinonyssus blarinae, and Prowichmannia cf. spinifera), and a tick (Ixodes scapularis). In addition, an epifaunistic beetle (Leptinus americanus) was found on 1 of the B. carolinensis collected. We document a new host and 9 new distributional records, and the first records of helminth parasites from any shrew from Arkansas or Oklahoma.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"88 1","pages":"22 - 33"},"PeriodicalIF":0.5,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44710725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}