Pub Date : 2019-12-20DOI: 10.1654/1525-2647-87.1.16
Erik Seoane-Scheitermaier, Sydney Dang, M. Barry, J. F. Shea
abstract: Horsehair worms, such as Paragordius varius, exhibit knotting behavior that may serve various functions such as water regulation, mate facilitation, and predator avoidance. Previous studies have found knots consisting only of males, suggesting that this behavior may be mediated by an aggregation pheromone. We conducted a quantitative field study to determine the relative number and size of adult P. varius that occur singly and in knots in a creek known to have a large number of adults in September of 2018. We collected 96 horsehair worms; all were male and associated with vegetation. We found significantly more adult male P. varius occurring singly than in knots and found no significant difference in their length or dry weight. Behavioral assays in the lab can help determine the possible presence and function of hairworm aggregation pheromone.
{"title":"Observations on the Occurrence of Knotting Behavior in the Horsehair Worm, Paragordius varius","authors":"Erik Seoane-Scheitermaier, Sydney Dang, M. Barry, J. F. Shea","doi":"10.1654/1525-2647-87.1.16","DOIUrl":"https://doi.org/10.1654/1525-2647-87.1.16","url":null,"abstract":"abstract: Horsehair worms, such as Paragordius varius, exhibit knotting behavior that may serve various functions such as water regulation, mate facilitation, and predator avoidance. Previous studies have found knots consisting only of males, suggesting that this behavior may be mediated by an aggregation pheromone. We conducted a quantitative field study to determine the relative number and size of adult P. varius that occur singly and in knots in a creek known to have a large number of adults in September of 2018. We collected 96 horsehair worms; all were male and associated with vegetation. We found significantly more adult male P. varius occurring singly than in knots and found no significant difference in their length or dry weight. Behavioral assays in the lab can help determine the possible presence and function of hairworm aggregation pheromone.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"87 1","pages":"16 - 18"},"PeriodicalIF":0.5,"publicationDate":"2019-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43615305","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}
Pub Date : 2019-12-20DOI: 10.1654/1525-2647-87.1.19
C. T. McAllister, T. Fayton, D. Cloutman, C. Bursey, H. Robison, S. Trauth, C. Whipps
abstract: Between March 2016 and March 2018, 52 golden topminnows, Fundulus chrysotus, were collected in the Arkansas (n = 5), Ouachita (n = 20), Red (n = 21), and St. Francis (n = 6) river drainages of Arkansas and examined for parasites. Twenty-three (44%) were infected/infested, including 1 (2%) with Calyptospora funduli, 4 (8%) with Myxobolus sp., 9 (18%) with Salsuginus sp., 2 (4%) with Homalometron sp., 2 (4%) with metacercaria of Clinostomum marginatum, 4 (8%) with Posthodiplostomum minimum, 5 (10%) with immature Proteocephalus sp., 4 (8%) with larval Eustrongylides sp., 5 (10%) with acanthocephalan cystacanths, 2 (4%) with Leptorhynchoides sp., 1 (2%) with Neoechinorhynchus sp., and 1 (2%) with Lernaea cyprinacea. Six (12%) topminnows harbored multiple infections. We document 4 new host and 3 new distributional records; the Homalometron sp. appears to be new, and the samples of Myxidium likely represent at least 1, if not 2, previously undescribed species, but both require additional specimens for a description.
{"title":"Parasites of the Golden Topminnow, Fundulus chrysotus (Cyprinodontiformes: Fundulidae), from Arkansas, U.S.A.","authors":"C. T. McAllister, T. Fayton, D. Cloutman, C. Bursey, H. Robison, S. Trauth, C. Whipps","doi":"10.1654/1525-2647-87.1.19","DOIUrl":"https://doi.org/10.1654/1525-2647-87.1.19","url":null,"abstract":"abstract: Between March 2016 and March 2018, 52 golden topminnows, Fundulus chrysotus, were collected in the Arkansas (n = 5), Ouachita (n = 20), Red (n = 21), and St. Francis (n = 6) river drainages of Arkansas and examined for parasites. Twenty-three (44%) were infected/infested, including 1 (2%) with Calyptospora funduli, 4 (8%) with Myxobolus sp., 9 (18%) with Salsuginus sp., 2 (4%) with Homalometron sp., 2 (4%) with metacercaria of Clinostomum marginatum, 4 (8%) with Posthodiplostomum minimum, 5 (10%) with immature Proteocephalus sp., 4 (8%) with larval Eustrongylides sp., 5 (10%) with acanthocephalan cystacanths, 2 (4%) with Leptorhynchoides sp., 1 (2%) with Neoechinorhynchus sp., and 1 (2%) with Lernaea cyprinacea. Six (12%) topminnows harbored multiple infections. We document 4 new host and 3 new distributional records; the Homalometron sp. appears to be new, and the samples of Myxidium likely represent at least 1, if not 2, previously undescribed species, but both require additional specimens for a description.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"87 1","pages":"19 - 32"},"PeriodicalIF":0.5,"publicationDate":"2019-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45949392","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}
Pub Date : 2019-11-20DOI: 10.1654/1525-2647-87.1.4
C. Bursey, S. Goldberg, Cameron D. Siler, Rafe M. Brown
ABSTRACT: Falcaustra samarensis n. sp. (Ascaridida, Kathlaniidae) from the intestines of Megophrys stejnegeri Taylor 1920 (Anura, Megophryidae) is described and illustrated. Falcaustra samarensis n. sp. represents the one hundred fourth species assigned to the genus and the thirty-seventh Oriental species. It is distinguished from other Oriental species by the pattern of caudal papillae (8 precloacal, 2 adcloacal, 10 postcloacal, and 1 median), length of spicules (2,050–3,300 µm) and presence of 1 pseudosucker. Megophrys stejnegeri was also found to harbor 2 additional species of Nematoda, adults of Aplectana ranae and Batrachostrongylus longispiculus. Megophrys stejnegeri represents a new host record for each of these helminth species.
摘要/ ABSTRACT摘要:本文报道了来自stejnegeri Taylor 1920(无尾目，巨蝇科)肠道的samarensis Falcaustra n. sp.(蛔虫目，巨蝇科)。Falcaustra samarensis n. sp代表该属的第104种和东方的第37种。它与其他东方物种的区别在于尾部乳头的形态(8个腔前乳头，2个腔内乳头，10个腔后乳头和1个腔中乳头)，针状体的长度(2050 - 3300µm)和1个假吸盘。此外，在斯氏巨蝇中还发现了2种线虫、成虫阿plectana ranae和长三角蝙蝠线虫。stejnegeri代表了这些蠕虫物种的新宿主记录。
{"title":"New Species of Falcaustra (Nematoda: Kathlaniidae) and Other Helminths in Megophrys stejnegeri (Anura: Megophryidae) from Samar Island, Philippines","authors":"C. Bursey, S. Goldberg, Cameron D. Siler, Rafe M. Brown","doi":"10.1654/1525-2647-87.1.4","DOIUrl":"https://doi.org/10.1654/1525-2647-87.1.4","url":null,"abstract":"ABSTRACT: Falcaustra samarensis n. sp. (Ascaridida, Kathlaniidae) from the intestines of Megophrys stejnegeri Taylor 1920 (Anura, Megophryidae) is described and illustrated. Falcaustra samarensis n. sp. represents the one hundred fourth species assigned to the genus and the thirty-seventh Oriental species. It is distinguished from other Oriental species by the pattern of caudal papillae (8 precloacal, 2 adcloacal, 10 postcloacal, and 1 median), length of spicules (2,050–3,300 µm) and presence of 1 pseudosucker. Megophrys stejnegeri was also found to harbor 2 additional species of Nematoda, adults of Aplectana ranae and Batrachostrongylus longispiculus. Megophrys stejnegeri represents a new host record for each of these helminth species.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"87 1","pages":"4 - 11"},"PeriodicalIF":0.5,"publicationDate":"2019-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49028447","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}
Pub Date : 2019-11-15DOI: 10.1654/1525-2647-87.1.12
S. Goldberg, C. Bursey
ABSTRACT: Three species of Polypedates frogs (Rhacophoridae) from Borneo, Malaysia, were examined for helminths: Polypedates colletti (n = 5), P. macrotis (n = 8), and P. otilophus (n = 5). We found 3 species of Nematoda: Cosmocerca ornata, Raillietnema rhacophori, and Physalopteroides sp. Cosmocerca ornata was the only helminth infecting all 3 rhacophorid species. The most numerous helminth (too numerous to count) was R. rhacophori in P. otilophus. The 3 species of Polypedates are parasitized by generalist helminths that also infect other species of anurans. Four new host records are reported.
{"title":"Gastrointestinal Helminths from Three Species of Rhacophorid Frogs, Polypedates colletti, P. macrotus, and P. otilophus (Anura: Rhacophoridae) from Borneo, Malaysia","authors":"S. Goldberg, C. Bursey","doi":"10.1654/1525-2647-87.1.12","DOIUrl":"https://doi.org/10.1654/1525-2647-87.1.12","url":null,"abstract":"ABSTRACT: Three species of Polypedates frogs (Rhacophoridae) from Borneo, Malaysia, were examined for helminths: Polypedates colletti (n = 5), P. macrotis (n = 8), and P. otilophus (n = 5). We found 3 species of Nematoda: Cosmocerca ornata, Raillietnema rhacophori, and Physalopteroides sp. Cosmocerca ornata was the only helminth infecting all 3 rhacophorid species. The most numerous helminth (too numerous to count) was R. rhacophori in P. otilophus. The 3 species of Polypedates are parasitized by generalist helminths that also infect other species of anurans. Four new host records are reported.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"87 1","pages":"12 - 15"},"PeriodicalIF":0.5,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47957155","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}
Pub Date : 2019-10-31DOI: 10.1654/1525-2647-87.1.1
S. Goldberg, C. Bursey
ABSTRACT: Two species of bufonid frogs from Borneo were examined for helminths: Phrynoidis juxtasper (n = 5), and Ingerophrynus divergens (n = 4). We found 2 species of Nematoda, Cosmocerca ornata and Seuratascaris numidica, and 1 species of Acanthocephala, Pseudoacanthocephalus bufonis. Seuratascaris numidica was the only helminth infecting both bufonid species. The most numerous helminth (n = 15) was S. numidica in P. juxtasper. The 2 species of Bufonidae are parasitized by generalist helminths that also infect other species of anurans. Four new host records are reported.
{"title":"Gastrointestinal Helminths from Two Species of Toads, Ingerophrynus divergens and Phrynoidis juxtasper (Anura: Bufonidae), from Borneo, Southeast Asia","authors":"S. Goldberg, C. Bursey","doi":"10.1654/1525-2647-87.1.1","DOIUrl":"https://doi.org/10.1654/1525-2647-87.1.1","url":null,"abstract":"ABSTRACT: Two species of bufonid frogs from Borneo were examined for helminths: Phrynoidis juxtasper (n = 5), and Ingerophrynus divergens (n = 4). We found 2 species of Nematoda, Cosmocerca ornata and Seuratascaris numidica, and 1 species of Acanthocephala, Pseudoacanthocephalus bufonis. Seuratascaris numidica was the only helminth infecting both bufonid species. The most numerous helminth (n = 15) was S. numidica in P. juxtasper. The 2 species of Bufonidae are parasitized by generalist helminths that also infect other species of anurans. Four new host records are reported.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"87 1","pages":"1 - 3"},"PeriodicalIF":0.5,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49554210","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}
Pub Date : 2019-10-01Epub Date: 2019-09-24DOI: 10.1161/CIRCIMAGING.119.009214
Anish Bhuva, Wenjia Bai, Clement Lau, Rhodri Davies, Yang Ye, Heeraj Bulluck, Elisa McAlindon, Veronica Culotta, Peter Swoboda, Gabriella Captur, Thomas Treibel, Joao Augusto, Kristopher Knott, Andreas Seraphim, Graham Cole, Steffen Petersen, Nicola Edwards, John Greenwood, Chiara Bucciarelli-Ducci, Alun Hughes, Daniel Rueckert, James Moon, Charlotte Manisty
Background: Automated analysis of cardiac structure and function using machine learning (ML) has great potential, but is currently hindered by poor generalizability. Comparison is traditionally against clinicians as a reference, ignoring inherent human inter- and intraobserver error, and ensuring that ML cannot demonstrate superiority. Measuring precision (scan:rescan reproducibility) addresses this. We compared precision of ML and humans using a multicenter, multi-disease, scan:rescan cardiovascular magnetic resonance data set.
Methods: One hundred ten patients (5 disease categories, 5 institutions, 2 scanner manufacturers, and 2 field strengths) underwent scan:rescan cardiovascular magnetic resonance (96% within one week). After identification of the most precise human technique, left ventricular chamber volumes, mass, and ejection fraction were measured by an expert, a trained junior clinician, and a fully automated convolutional neural network trained on 599 independent multicenter disease cases. Scan:rescan coefficient of variation and 1000 bootstrapped 95% CIs were calculated and compared using mixed linear effects models.
Results: Clinicians can be confident in detecting a 9% change in left ventricular ejection fraction, with greater than half of coefficient of variation attributable to intraobserver variation. Expert, trained junior, and automated scan:rescan precision were similar (for left ventricular ejection fraction, coefficient of variation 6.1 [5.2%-7.1%], P=0.2581; 8.3 [5.6%-10.3%], P=0.3653; 8.8 [6.1%-11.1%], P=0.8620). Automated analysis was 186× faster than humans (0.07 versus 13 minutes).
Conclusions: Automated ML analysis is faster with similar precision to the most precise human techniques, even when challenged with real-world scan:rescan data. Assessment of multicenter, multi-vendor, multi-field strength scan:rescan data (available at www.thevolumesresource.com) permits a generalizable assessment of ML precision and may facilitate direct translation of ML to clinical practice.
背景：使用机器学习（ML）对心脏结构和功能进行自动分析具有很大的潜力，但目前因通用性差而受到阻碍。传统的比较方法是以临床医生为参照，忽略了观察者之间和观察者内部固有的人为误差，从而确保 ML 无法证明其优越性。测量精确度（扫描：重新扫描的再现性）可以解决这个问题。我们使用多中心、多疾病、扫描：重扫描心血管磁共振数据集比较了ML和人类的精确度：110名患者（5种疾病类别、5家机构、2家扫描仪制造商和2种磁场强度）接受了扫描：重扫描心血管磁共振检查（96%在一周内完成）。在确定了最精确的人类技术后，由一名专家、一名经过培训的初级临床医生和一个在 599 个独立的多中心疾病病例上训练过的全自动卷积神经网络测量左心室腔容积、质量和射血分数。使用混合线性效应模型计算并比较了扫描：再扫描变异系数和1000个自引导95% CI：结果：临床医生有信心检测出左心室射血分数 9% 的变化，其中一半以上的变异系数归因于观察者内部的差异。专家、训练有素的初级人员和自动扫描：重新扫描的精确度相似（左室射血分数，变异系数为 6.1 [5.2%-7.1%]，P=0.2581；8.3 [5.6%-10.3%]，P=0.3653；8.8 [6.1%-11.1%]，P=0.8620）。自动分析比人工分析快 186 倍（0.07 对 13 分钟）：结论：自动 ML 分析速度更快，精确度与最精确的人工技术相似，即使面对真实世界扫描：再扫描数据的挑战也是如此。对多中心、多供应商、多场强扫描：再扫描数据（可在 www.thevolumesresource.com 上获取）的评估允许对 ML 精确度进行可推广的评估，并有助于将 ML 直接应用于临床实践。
{"title":"A Multicenter, Scan-Rescan, Human and Machine Learning CMR Study to Test Generalizability and Precision in Imaging Biomarker Analysis.","authors":"Anish Bhuva, Wenjia Bai, Clement Lau, Rhodri Davies, Yang Ye, Heeraj Bulluck, Elisa McAlindon, Veronica Culotta, Peter Swoboda, Gabriella Captur, Thomas Treibel, Joao Augusto, Kristopher Knott, Andreas Seraphim, Graham Cole, Steffen Petersen, Nicola Edwards, John Greenwood, Chiara Bucciarelli-Ducci, Alun Hughes, Daniel Rueckert, James Moon, Charlotte Manisty","doi":"10.1161/CIRCIMAGING.119.009214","DOIUrl":"10.1161/CIRCIMAGING.119.009214","url":null,"abstract":"<p><strong>Background: </strong>Automated analysis of cardiac structure and function using machine learning (ML) has great potential, but is currently hindered by poor generalizability. Comparison is traditionally against clinicians as a reference, ignoring inherent human inter- and intraobserver error, and ensuring that ML cannot demonstrate superiority. Measuring precision (scan:rescan reproducibility) addresses this. We compared precision of ML and humans using a multicenter, multi-disease, scan:rescan cardiovascular magnetic resonance data set.</p><p><strong>Methods: </strong>One hundred ten patients (5 disease categories, 5 institutions, 2 scanner manufacturers, and 2 field strengths) underwent scan:rescan cardiovascular magnetic resonance (96% within one week). After identification of the most precise human technique, left ventricular chamber volumes, mass, and ejection fraction were measured by an expert, a trained junior clinician, and a fully automated convolutional neural network trained on 599 independent multicenter disease cases. Scan:rescan coefficient of variation and 1000 bootstrapped 95% CIs were calculated and compared using mixed linear effects models.</p><p><strong>Results: </strong>Clinicians can be confident in detecting a 9% change in left ventricular ejection fraction, with greater than half of coefficient of variation attributable to intraobserver variation. Expert, trained junior, and automated scan:rescan precision were similar (for left ventricular ejection fraction, coefficient of variation 6.1 [5.2%-7.1%], <i>P</i>=0.2581; 8.3 [5.6%-10.3%], <i>P</i>=0.3653; 8.8 [6.1%-11.1%], <i>P</i>=0.8620). Automated analysis was 186× faster than humans (0.07 versus 13 minutes).</p><p><strong>Conclusions: </strong>Automated ML analysis is faster with similar precision to the most precise human techniques, even when challenged with real-world scan:rescan data. Assessment of multicenter, multi-vendor, multi-field strength scan:rescan data (available at www.thevolumesresource.com) permits a generalizable assessment of ML precision and may facilitate direct translation of ML to clinical practice.</p>","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"85 1","pages":"e009214"},"PeriodicalIF":7.5,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89744336","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}
Pub Date : 2019-07-11DOI: 10.1654/1525-2647-86.2.114
F. L. P. León, Eolian M. Rodríguez Vara, Mercedes Martínez Pérez, Abelardo Nuñez Nuñez, A. Valdés
Four species of Dactylogyrus were found on gills of goldfish (Carassius auratus) in Cuba. The collected monogeneans were fixed in ammonium picrate and glycerin solution and mounted in glycerin gelatin. The species were identified based on morphological characteristics and measurements, and the 4 dactylogyrids were identified as D. dulkeiti Bychowsky, 1936; D. baueri Gussev, 1955; D. formosus Kulwiec, 1927; and D. intermedius Weger, 1910, which are new records from goldfish in Cuba.
{"title":"New Records of Four Species of Dactylogyrus (Monogenea: Dactylogyridae) from Goldfish, Carassius auratus (Linnaeus, 1758) (Pisces: Cyprinidae), in Cuba","authors":"F. L. P. León, Eolian M. Rodríguez Vara, Mercedes Martínez Pérez, Abelardo Nuñez Nuñez, A. Valdés","doi":"10.1654/1525-2647-86.2.114","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.114","url":null,"abstract":"Four species of Dactylogyrus were found on gills of goldfish (Carassius auratus) in Cuba. The collected monogeneans were fixed in ammonium picrate and glycerin solution and mounted in glycerin gelatin. The species were identified based on morphological characteristics and measurements, and the 4 dactylogyrids were identified as D. dulkeiti Bychowsky, 1936; D. baueri Gussev, 1955; D. formosus Kulwiec, 1927; and D. intermedius Weger, 1910, which are new records from goldfish in Cuba.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43574837","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}
Pub Date : 2019-07-11DOI: 10.1654/1525-2647-86.2.149
S. Goldberg, C. Bursey
Three species of dicroglossid frogs from Malaysia were examined for helminths: Limnonectes ibanorum (n = 5), Limnonectes ingeri (n = 5), and Limnonectes leporinus (n = 6). We found 7 species of Nematoda (Amphibiocapillaria bufonis, Cosmocerca ornata, Falcaustra dubia, Orneoascaris sandoshami, Oswaldocruzia sp., Physaloptera sp., Cosmocercinae gen., sp. 1 of Moravec and Sey 1990); 1 species of Cestoda (pleurocercoid); 1 species of Acanthocephala (Pseudoacanthocephalus bufonis); and 1 species of Digenea (Diplodiscus amphichrus). Cosmocerca ornata was the only helminth infecting the 3 dicroglossid species. The most numerous helminth (n = 36) was Cosmocercinae gen. sp. in L. ibanorum. The 3 species of Limnonectes are parasitized by generalist helminths that also infect other species of frogs. Twelve new host records are reported.
对马来西亚三种蛙类(5种)、Limnonectes ingeri(5种)和Limnonectes leporinus(6种)进行蠕虫检测，发现线虫类7种(Amphibiocapillaria bufonis、Cosmocerca ornata、Falcaustra dubia、Orneoascaris sandoshami、Oswaldocruzia sp.、Physaloptera sp.、Cosmocercinae gen.、sp. 1 of Moravec and Sey 1990);尾尾纲(胸膜尾尾纲)1种;棘头目(Pseudoacanthocephalus bufonis) 1种;双翅蝶属(Diplodiscus amphichhrus) 1种。三种双翅目昆虫中，只有花角虫感染。L. ibanorum中数量最多的是Cosmocercinae gen. sp. (n = 36)。这三种蛙类都是由多面手蠕虫寄生的，这些蠕虫也会感染其他种类的蛙类。新增12条主机记录。
{"title":"Gastrointestinal Helminths of Three Species of Limnonectes Frogs (Anura: Dicroglossidae) from Malaysia","authors":"S. Goldberg, C. Bursey","doi":"10.1654/1525-2647-86.2.149","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.149","url":null,"abstract":"Three species of dicroglossid frogs from Malaysia were examined for helminths: Limnonectes ibanorum (n = 5), Limnonectes ingeri (n = 5), and Limnonectes leporinus (n = 6). We found 7 species of Nematoda (Amphibiocapillaria bufonis, Cosmocerca ornata, Falcaustra dubia, Orneoascaris sandoshami, Oswaldocruzia sp., Physaloptera sp., Cosmocercinae gen., sp. 1 of Moravec and Sey 1990); 1 species of Cestoda (pleurocercoid); 1 species of Acanthocephala (Pseudoacanthocephalus bufonis); and 1 species of Digenea (Diplodiscus amphichrus). Cosmocerca ornata was the only helminth infecting the 3 dicroglossid species. The most numerous helminth (n = 36) was Cosmocercinae gen. sp. in L. ibanorum. The 3 species of Limnonectes are parasitized by generalist helminths that also infect other species of frogs. Twelve new host records are reported.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42405883","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}
Pub Date : 2019-07-11DOI: 10.1654/1525-2647-86.2.153
D. Horton, Jeffrey C. Beane, J. Flowers
Twenty-three salvaged specimens of Coluber constrictor constrictor Linnaeus (Northern Black Racer) from North Carolina, U.S.A., were examined for gastrointestinal helminths. Eighteen species of helminths (4 trematodes, 2 cestodes, 10 nematodes, and 2 acanthocephalans) are reported, representing 6 new host records and 6 new geographic distribution records. At 52% prevalence, immature physalopterids were the most prevalent helminth, followed by another nematode, Abbreviata terrapenis, at 43%. Specimens of the cestode Oochoristica sp. were the most prevalent (48%) platyhelminth, and macracanthorhynchid cystacanths were the most prevalent (17%) acanthocephalan.
对从美国北卡罗来纳州打捞上来的23只北黑牛Coluber constrictor Linnaeus（Northern Black Racer）标本进行了胃肠蠕虫检查。报道了18种蠕虫（4种吸虫，2种线虫，10种线虫和2种棘头虫），代表了6个新的宿主记录和6个新地理分布记录。在52%的患病率下，未成熟的physaloptids是最常见的蠕虫，其次是另一种线虫，即土鸡缩写，患病率为43%。鹅膏虫标本是最常见的（48%）扁形蠕虫，而macracanthornchid cytacanths是最常见（17%）的棘头虫。
{"title":"Helminths of the Northern Black Racer, Coluber constrictor constrictor Linnaeus (Squamata: Colubridae), from North Carolina, U.S.A.","authors":"D. Horton, Jeffrey C. Beane, J. Flowers","doi":"10.1654/1525-2647-86.2.153","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.153","url":null,"abstract":"Twenty-three salvaged specimens of Coluber constrictor constrictor Linnaeus (Northern Black Racer) from North Carolina, U.S.A., were examined for gastrointestinal helminths. Eighteen species of helminths (4 trematodes, 2 cestodes, 10 nematodes, and 2 acanthocephalans) are reported, representing 6 new host records and 6 new geographic distribution records. At 52% prevalence, immature physalopterids were the most prevalent helminth, followed by another nematode, Abbreviata terrapenis, at 43%. Specimens of the cestode Oochoristica sp. were the most prevalent (48%) platyhelminth, and macracanthorhynchid cystacanths were the most prevalent (17%) acanthocephalan.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41683199","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}
Pub Date : 2019-07-11DOI: 10.1654/1525-2647-86.2.79
D. C. Kritsky, M. Bakenhaster
Three species (2 new) of Lamellodiscus (Diplectanidae) are reported from gill lamellae of porgies (Perciformes: Sparidae) from the Gulf of Mexico off Florida. Lamellodiscus occiduus n. sp. is described from the littlehead porgy Calamus proridens and knobbed porgy Calamus nodosus. Lamellodiscus vesperus n. sp. is described from the jolthead porgy Calamus bajonado. Lamellodiscus baeri is reported from the red porgy Pagrus pagrus. The new species of Lamellodiscus are the first of the genus to be described from the western Atlantic region (Gulf of Mexico). The Gulf of Mexico is a new locality record for L. baeri.
报道了在美国佛罗里达州附近墨西哥湾鲈鱼鳃片上发现的三种(2新种)薄鳞鲷(双鳞鲷科)。山菖蒲属(Lamellodiscus occiduus n. sp.)是由小头菖蒲和节头菖蒲组成。板状铁饼是一种由菖蒲属(菖蒲属)命名的植物。据报道，白斑板饼是一种来自红桃的植物。这一新种是第一个从西大西洋地区(墨西哥湾)被描述的薄层铁饼属。墨西哥湾是白氏乳杆菌的新纪录。
{"title":"Lamellodiscus spp. (Monogenoidea: Diplectanidae) Infecting the Gill Lamellae of Porgies (Perciformes: Sparidae) in the Gulf of Mexico off Florida, U.S.A., with Descriptions of Lamellodiscus occiduus n. sp. and Lamellodiscus vesperus n. sp. from Calamus spp.","authors":"D. C. Kritsky, M. Bakenhaster","doi":"10.1654/1525-2647-86.2.79","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.79","url":null,"abstract":"Three species (2 new) of Lamellodiscus (Diplectanidae) are reported from gill lamellae of porgies (Perciformes: Sparidae) from the Gulf of Mexico off Florida. Lamellodiscus occiduus n. sp. is described from the littlehead porgy Calamus proridens and knobbed porgy Calamus nodosus. Lamellodiscus vesperus n. sp. is described from the jolthead porgy Calamus bajonado. Lamellodiscus baeri is reported from the red porgy Pagrus pagrus. The new species of Lamellodiscus are the first of the genus to be described from the western Atlantic region (Gulf of Mexico). The Gulf of Mexico is a new locality record for L. baeri.","PeriodicalId":50655,"journal":{"name":"Comparative Parasitology","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48467139","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：