Comparative Parasitology最新文献_第10页

Identification, Location, and Emergence of the Cercaria of Leuceruthrus micropteri (Trematoda: Azygiidae) Recovered from the Snail Pleurocera semicarinata (Gastropoda: Pleuroceridae) at North Elkhorn Creek, Kentucky 从肯塔基州北埃尔克霍恩溪的半隆尾螺Pleurocera（腹足目：Pleuroceridae）中回收的微小白尾病毒尾蚴的鉴定、定位和出现

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.142

R. Rosen, Chi-Cung Peng, B. Traw, E. Blevins, Bojana Jovanović, A. Sarshad, Fady Zaki

{"title":"Identification, Location, and Emergence of the Cercaria of Leuceruthrus micropteri (Trematoda: Azygiidae) Recovered from the Snail Pleurocera semicarinata (Gastropoda: Pleuroceridae) at North Elkhorn Creek, Kentucky","authors":"R. Rosen, Chi-Cung Peng, B. Traw, E. Blevins, Bojana Jovanović, A. Sarshad, Fady Zaki","doi":"10.1654/1525-2647-86.2.142","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.142","url":null,"abstract":"We have encountered azygiid cercariae shed from the snail, Pleurocera semicarinata, at North Elkhorn Creek, Scott County, Kentucky, since 2004. Samples of these cercariae were frozen, and their DNA analyzed. The resulting alignment total length of 394 base pairs from partial 5.8S and 28S genes and the complete ribosomal internal transcribed spacer 2 (ITS2) confirmed our identification of the North Elkhorn Creek cercaria as Leuceruthrus micropteri. There was a 100% match to adult L. micropteri obtained from largemouth bass at Wheeler Reservoir, Alabama. Prevalence of infections by L. micropteri in snails was low at North Elkhorn Creek during 2004 (1.8% [7/400]) and 2017 (0.9% [4/432]). Quantitative data were obtained regarding cercarial emergence (daily and long-term patterns), site of infection of rediae, and functional morphology of the distome and tail stem. Most (96.1%) cercariae were released during the 12-hr light phase of a 12-hr light:12-hr dark cycle, and the average number of cercariae released per 7 snails per day over 21 d ranged between 0 and 2.3. Individual snails most frequently shed between 0 and 2 (range 0–6) cercariae per day. Snails shed cercariae for an average of 12.6 ± 3.1 d of the 21-d sampling period. Histology revealed rediae in the bottom whorl of the snail within the perintestinal sinus separated from the mantle cavity and gills by a thin mantle membrane. Envelopment of the distome body by the tail stem in vitro required less than 2 min. The lip of the tail chamber moved forward over the distome body until the latter was completely enclosed.","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":"49237242","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}

引用次数: 2

MinutesSeven Hundred Nineteenth through Seven Hundred Twentieth Meetings of the Helminthological Society of Washington 华盛顿寄生虫学会第719至720次会议记录

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.173

引用次数: 0

Helminth Fauna of the Shortfin Molly Poecilia mexicana (Actinopterygii) in Two Neotropical Brackish Water Bodies of Mexico 墨西哥两个新热带微咸水体中短鳍茉莉(放线藻科)的蠕虫区系

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.122

Nancy Bárcenas-De Los Santos, G. Torres-Carrera, L. García‐Prieto, D. Osorio-Sarabia

{"title":"Helminth Fauna of the Shortfin Molly Poecilia mexicana (Actinopterygii) in Two Neotropical Brackish Water Bodies of Mexico","authors":"Nancy Bárcenas-De Los Santos, G. Torres-Carrera, L. García‐Prieto, D. Osorio-Sarabia","doi":"10.1654/1525-2647-86.2.122","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.122","url":null,"abstract":"Although information on the fauna of helminths of the shortfin molly Poecilia mexicana in freshwater environments is extensive, to date, there have been no studies on helminths that parasitize this fish in brackish water bodies. To increase the knowledge about the host-parasite association in this kind of habitats, during April 2014, 80 fish specimens of P. mexicana from 2 localities in Veracruz, Mexico, were examined for helminths: Arroyo Moreno (AM) and Laguna Mandinga (LM). Arroyo Moreno is an anthropogenically polluted mangrove swamp, and LM is a saline environment with low marine influence. The helminth species record in both fish populations included 9 taxa: 7 digeneans, 1 cestode, and 1 nematode, with 6,261 individuals, most of them collected in fishes from AM (5,768). In general, a high proportion of allogenic larval stages was observed, which agreed with the pattern observed in helminth fauna of tropic freshwater fish. In addition, these parasite assemblages were dominated by digeneans, worms that generally are numerically dominant in many helminth communities of freshwater fishes in Mexico. The euryhaline nature of P. mexicana establishes it as an adequate system to study the effects of salinity gradients focused on helminth communities.","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":"42164748","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}

引用次数: 0

A New Species of Dieffluvium (Cestoda: Caryophyllidea) from Smallmouth Buffalo (Ictiobus bubalus) from the Big Thicket National Preserve, Texas, U.S.A. 美国德克萨斯州大灌丛国家自然保护区小嘴水牛(Ictiobus bubalus)的双叶菊属一新种(蜱螨纲:石竹科)

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.73

T. L. Herzog, M. Barger

引用次数: 2

Occurrence of Phyllodistomum superbum Stafford, 1904 (Trematoda: Gorgoderidae), in the Urinary Bladder of Yellow Perch, Perca flavescens, from Lake St. Clair, Michigan, U.S.A. 美国密歇根州圣克莱尔湖黄Perca flavescens的膀胱中发生的Phylloditomum superum Stafford，1904（Trematoda：Gorgoderidae）。

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.164

P. Muzzall, Jan‐Michael Hessenauer

引用次数: 0

Host Specificity in the Appalachian Leech Placobdella biannulata 阿巴拉契亚水蛭扁环水蛭寄主特异性研究

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.161

R. Matthews, C. Simmons, Tyler L. Brock, E. Bewick, Kaitlin A. Norman, C. Camp

引用次数: 1

First Molecular Characterization of Linguatula recurvata (Pentastomida) and First Record in Baird's Tapir (Tapirus bairdii) from Calakmul, Mexico 墨西哥卡拉克穆尔Baird’s Tapir（Tapirus bairdii）的首次分子鉴定和首次记录

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.135

J. Pérez-Flores, O. Lagunas-Calvo, D. González-Solís, A. Oceguera-Figueroa

引用次数: 3

Asian Fish Tapeworm (Schyzocotyle acheilognathi) Found in New York State for the First Time After a Long-Term Fish-Parasite Survey 经过长期鱼类寄生虫调查，首次在纽约州发现亚洲鱼类绦虫(Schyzocotyle acheilognathi)

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.108

F. Reyda, Cheyenne P. Pommelle, Margaret L Doolin

{"title":"Asian Fish Tapeworm (Schyzocotyle acheilognathi) Found in New York State for the First Time After a Long-Term Fish-Parasite Survey","authors":"F. Reyda, Cheyenne P. Pommelle, Margaret L Doolin","doi":"10.1654/1525-2647-86.2.108","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.108","url":null,"abstract":"The first report of Asian fish tapeworm (AFT), Schyzocotyle acheilognathi (Yamaguti, 1934) Brabec, Waeschenbach, Scholz, Littlewood and Kuchta, 2015, is provided for New York State. This finding resulted from a long-term fish parasite survey in various water bodies in Otsego County in central-east New York that took place during 2008–2018. In total, 1,637 individual fish representing 44 species were examined for AFT, with 4 (9%) of the 44 species of fish infected with S. acheilognathi. These 4 species were all cyprinids: Notemigonus crysoleucas (golden shiner), Notropis heterodon (blackchin shiner), Pimephales promelas (fathead minnow), and Semotilus atromaculatus (creek chub). Among these host species, the prevalence of Schyzocotyle acheilognathi was highest in Notemigonus crysoleucas, with 19 (15.7%) of 121 fishes infected. The infection in Notropis heterodon constitutes a new host record for S. acheilognathi. The observed occurrence of S. acheilognathi only in cyprinid species was generally consistent with previously reported infection patterns for this cestode, but we note that AFT was absent from multiple fish species in our survey that had elsewhere been reported as hosts. The source of AFT for water bodies in Otsego County, New York is unknown, but bait-bucket introduction of infected Notemigonus crysoleucas is considered a possible explanation. This study contributes to a growing body of molecular data for this highly invasive tapeworm by providing sequence data for 2 markers (large ribosomal subunit, 28S, and cytochrome c oxidase I) for 6 specimens.","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":"43821626","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}

引用次数: 0

Potential Role of Strigeid Parasite Infection in the Maintenance of Alternate Reproductive Morphotypes in Bluegill Sunfish (Lepomis macrochirus) 寄生体感染在蓝鳃翻阳鱼交替生殖形态维持中的潜在作用

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.94

Nicholas Strait, Candace E. Ashworth, M. Zimmermann

{"title":"Potential Role of Strigeid Parasite Infection in the Maintenance of Alternate Reproductive Morphotypes in Bluegill Sunfish (Lepomis macrochirus)","authors":"Nicholas Strait, Candace E. Ashworth, M. Zimmermann","doi":"10.1654/1525-2647-86.2.94","DOIUrl":"https://doi.org/10.1654/1525-2647-86.2.94","url":null,"abstract":"Bluegill sunfish (Lepomis macrochirus) have two male morphotypes, α- and β-males, each differing in appearance and mating strategy. Alpha-males use nest-building tactics, whereas β-males use sneaker or satellite tactics. Lepomis macrochirus are important members of the aquatic community, and are often involved in parasitic life cycles. Among the most common parasites infecting L. macrochirus are strigeids, which include white grub (Posthodiplostomum minimum), black grub (Uvulifer ambloplitis), and yellow grub (Clinostomum marginatum). Previous studies found a higher abundance of strigeid parasites in α-males, even though β-males spend increased time in the littoral zone. One hypothesis is that α-males recruit the parasites during the spawn because of their nest-guarding behavior, which potentially increases their interactions with snail intermediate hosts. To test this hypothesis, L. macrochirus were collected between February and July in consecutive years from 2015 to 2017 from 13 lakes and ponds in northwestern Virginia. The fish were necropsied and all of the endo- and ectoparasites infecting the fish were identified and enumerated. The results supported the hypothesis and showed that α-males had greater infections postspawn, whereas β-males and females had no increase in infection from pre- to postspawn. Additionally, α-males recruited strigeid parasites at a greater rate than β-males, which negatively affected their body condition. The body condition of both α-males and females were negatively affected by P. minimum and U. ambloplitis, but β-males were not affected by either parasite. This shows that the differences in mating strategies between male morphotypes may result in greater strigeid infection in α-males compared with β-males. This may affect the fitness and reproductive output of α-males and be a contributing factor to the maintenance of β-males in the ecologically stable system, despite decreased reproductive success.","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":"48418643","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}

引用次数: 5

Anniversary Award 周年纪念奖

IF 0.5 4区医学

Comparative Parasitology Pub Date : 2019-07-11 DOI: 10.1654/1525-2647-86.2.169

V. Connors

引用次数: 0