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J A Kuhn, R Knudsen, R Kristoffersen, P-A Amundsen
Some fish parasites constitute severe management problems as they may cause mortality of their fish host or are important zoonoses of humans. Parasite assessments are therefore critical to keep track of infections. If conventional sampling techniques can be simplified, parasite assessments might be easier to obtain, less time-consuming and more extensive. In this study, we compare the assessed number of Diphyllobothrium spp. cysts (CYST) with the counted number of Diphyllobothrium spp. plerocercoid larvae recovered using a conventional digestive technique (LARV)...
October 13, 2016: Journal of Fish Diseases
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Woon-Mok Sohn, Keeseon S Eom
The genus Spirometra belongs to the family Diphyllobothriidae and order Pseudophyllidea, and includes intestinal parasites of cats and dogs. In this study, a plerocercoid labeled as Spirometra mansonoides from the USA was examined for species identification and phylogenetic analysis using 2 complete mitochondrial genes, cytochrome c oxidase I (cox1) and NADH dehydrogenase subunit 3 (nad3). The cox1 sequences (1,566 bp) of the plerocercoid specimen (USA) showed 99.2% similarity to the reference sequences of the plerocercoid of Korean Spirometra decipiens (GenBank no...
August 2016: Korean Journal of Parasitology
Andrea Gustinelli, Vasco Menconi, Marino Prearo, Monica Caffara, Marzia Righetti, Tommaso Scanzio, Annibale Raglio, Maria Letizia Fioravanti
In recent years there has been a re-emergence of diphyllobothriasis by Diphyllobothrium latum (Cestoda: Diphyllobothriidae) in Italy, France and Switzerland, where in the past this fish-borne zoonosis was widespread and then virtually disappeared. A change in eating habits such as the consumption of raw/undercooked freshwater fish, has led to an increased risk for consumers of ingesting infective larvae of D. latum. A survey on the factors responsible for the re-emergence of human diphyllobothriasis in Italy was carried out from March 2013 to December 2014...
October 17, 2016: International Journal of Food Microbiology
Azusa Banzai-Umehara, Mika Suzuki, Takahiro Akiyama, Hong-Kean Ooi, Yasushi Kawakami
Diphyllobothrium hottai Yazaki, Fukumoto & Abe, 1988 was described based on the morphology of adult worms recovered from golden hamsters that had been experimentally infected with plerocercoids obtained from Japanese surf smelts (Hypomesus pretiosus japonicus) and olive rainbow smelts (Osmerus eperlanus mordax). Although D. hottai was considered to be distinct from Diphyllobothrium ditremum (Creplin, 1825), their taxonomic relationship requires further clarification. In our study, D. hottai and D. ditremum obtained from hamsters experimentally infected with plerocercoids isolated from Japanese surf smelts were compared using morphological and molecular methods...
October 2016: Parasitology International
Hiroshi Yamasaki, Hideo Kumazawa, Yoshiyuki Sekikawa, Rentaro Oda, Igen Hongo, Takanobu Tsuchida, Noriko Saito, Yasuyuki Morishima, Hiromu Sugiyama
Several tapeworm species in the genus Diphyllobothrium Cobbold, 1858 have uncertain taxonomic positions, leading to taxonomic confusion as well as misdiagnosis of infections. Taxonomic revision based on DNA sequence analysis is considered necessary to resolve the taxonomy of several cases, including that between Diphyllobothrium stemmacephalum, the type species of the genus, and Diphyllobothrium yonagoense. Diphyllobothrium yonagoense was synonymized with D. stemmacephalum based on morphological observations by Andersen (1987), however no molecular studies have been undertaken to verify the validity of this synonymization...
October 2016: Parasitology International
Kateřina Leštinová, Miroslava Soldánová, Tomáš Scholz, Roman Kuchta
BACKGROUND: Tapeworms of the order Diphyllobothriidea are parasites of tetrapods and several species may infect man and cause neglected human disease called diphyllobothriosis. Identification of human-infecting diphyllobothriid cestodes is difficult because of their morphological uniformity, which concerns also their eggs in stool samples. METHODS: In the present study, we analysed by far the largest dataset of more than 2,000 eggs of 8 species of diphyllobothriid cestodes that may infect humans, including the most frequent human parasites Diphyllobothrium latum, D...
May 2016: PLoS Neglected Tropical Diseases
J A Kuhn, A Frainer, R Knudsen, R Kristoffersen, P-A Amundsen
Subarctic populations of brown trout (Salmo trutta) are often heavily infected with cestodes of the genus Diphyllobothrium, assumedly because of their piscivorous behaviour. This study explores possible associations between availability of fish prey and Diphyllobothrium spp. infections in lacustrine trout populations. Trout in (i) allopatry (group T); (ii) sympatry with Arctic charr (Salvelinus alpinus) (group TC); and (iii) sympatry with charr and three-spined stickleback (Gasterosteus aculeatus) (group TCS) were contrasted...
April 25, 2016: Journal of Fish Diseases
Diana L Villazanakretzer, Peter G Napolitano, Kelly F Cummings, Everett F Magann
Intestinal parasitic worms affect more than 2 billion people worldwide according to the World Health Organization. Fish-borne parasitic infections are becoming more common with the increasing popularity of sushi, sashimi, Carpaccio, tartare, gefilte, and ceviche. The ingestion of these parasites can cause serve anemia, malabsorption, severe abdominal pain, nausea, vomiting, strong allergic reactions, and gastric ulcers. Knowledge about fish parasites and pregnancy is limited. A literature search on PubMed and Web of Science used the search terms "fish parasites" OR "diphyllobothrium" OR "anisakiasis" OR "pseudoterranova" OR ("food borne parasites" AND "fish") AND "pregnancy" OR "maternal" OR "fetus" OR "fetal" OR "newborn" OR "neonatal" OR "childbirth...
April 2016: Obstetrical & Gynecological Survey
Kristy Jacobus, Juliana Marigo, Silvia Bainy Gastal, Sueli Akemi Taniwaki, Valeria Ruoppolo, José Luiz Catão-Dias, Florina Tseng
In order to improve understanding of parasitism in South American pinnipeds, respiratory and gastrointestinal samples were collected from 12 Arctocephalus australis (South American fur seal), one Arctocephalus gazella (Antarctic fur seal), and one Otaria flavescens (South American sea lion). Ova and larvae were microscopically identified from fecal samples and respiratory secretions collected from live A. australis undergoing rehabilitation at Centro de Recuperação de Animais Marinhos (CRAM-FURG) in Rio Grande, Rio Grande do Sul, Brazil during June-July 2012...
March 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
Weizhe Zhang, Fei Che, Song Tian, Jing Shu, Xiaoli Zhang
Human diphyllobothriasis is a widespread fish-borne zoonosis caused by the infection with broad tapeworms belonging to the genus Diphyllobothrium. In mainland China, so far 20 human cases of Diphyllobothrium infections have been reported, and the etiologic species were identified as D. latum and D. nihonkaiense based on morphological characteristics or molecular analysis. In the present study, proglottids of diphyllobothriid tapeworms from 3 human cases that occurred in Heilongjiang Province, China were identified as D...
December 2015: Korean Journal of Parasitology
Seung Hyun Lee, Hyun Park, Seung Taek Yu
Diphyllobothrium latum infection in humans is not common in Republic of Korea. We report a case of fish tapeworm infection in a 10-year-old boy after ingestion of raw perch about 8 months ago. The patient complained of recurrent abdominal pain and watery diarrhea. A tapeworm, 85 cm in length, without scolex and neck, was spontaneously discharged in the feces of the patient. The patient was treated with 15-mg/kg single dose praziquantel, and follow-up stool examination was negative after one month. There was no evidence of relapse during the next six months...
November 2015: Korean Journal of Pediatrics
Natasha S Hochberg, Nahid Bhadelia
"Exotic" food dishes are an expression of regional culture, religion, and ethnicity worldwide. With the increase in international travel to remote areas of the world, globalization of the food supply, and changes in food habits, more people are consuming dishes once considered exotic. Such behavioral changes require awareness by consumers and clinicians about the risks of food-borne infections. This chapter addresses pathogens associated with consumption of raw or undercooked seafood including anisakidosis, Diphyllobothrium latum infection, flukes, and other infectious and toxin-mediated diseases...
October 2015: Microbiology Spectrum
Joel Caballero, Losmill Morales, Diana García, Idelmys Alarcón, Anay Torres, Gladys Sáez
Brain sparganosis is a non-common parasite infection by Diphyllobothrium or Spirometra mansonoides larvae. This last one is responsible for most of the infestations in humans. We report a 19 years male patient bearer of a brain sparganosis. The patient presented with headache and left hemiparesis. CT diagnosis of right thalamic lesions was made and aspiration biopsy was performed using stereotactic system, obtaining a whole and death larvae. Histopathology confirms a CNS parasitism and it was treated initially with albendazol...
August 2015: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
Patrick Unger, Harry W Palm
A total of 52 sea trouts, Salmo trutta trutta, were studied for parasites, originating from German freshwater streams and coastal waters of the Baltic Sea. While 35 specimens were caught mainly close to the shoreline in the Baltic Sea, 17 were sampled during their spawning migration in Warnow River and other neighboring rivers in Mecklenburg-Western Pomerania. A total of 12 different metazoan parasite species were found in sea trout originating from the Baltic Sea, including five digeneans, two cestodes, three nematodes, and two acanthocephalans...
January 2016: Parasitology Research
Iwona Bielat, Monika Legierko, Ewa Sobecka
Pomeranian Bay as an ecotone is a transition zone between two different biocenoses, which is characterized by an increase in biodiversity and species density. Therefore, Pomeranian Bay is a destination of finding and reproductive migrations of fish from the rivers entered the area. The aim of the study was to compare parasitic fauna of two predatory fish species from the Pomeranian Bay, collected from the same fishing grounds at the same period. A total of 126 fish studied (53 perches and 73 zanders) were collected in the summer 2013...
2015: Annals of Parasitology
M M Kuklina
No abstract text is available yet for this article.
2015: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
I I Gordeev, D V Mikryakov, N I Silkina
Comparative study of lipid metabolism indices (total lipids, separate lipid fractions, level of the lipid peroxidation processes, and antioxidant protection) was carried out in three parasite species collected from the white char in the Lake Kronotskoe: Diphyllobothrium ditremum Crepin, 1825 (Cestoda), Philonema oncorhynchi Kuitunen-Ekbaum, 1933 (Nematoda) H Neoechinorhynchus salmonis Ching, 1984 (Acanthocephala). Acanthocephalans possessed significantly greater levels of total lipids, triacylglycerol, and malondialdehyde; nematodes, of cholesterol and sterol esters; and cestodes, in phospholipids and constants of the substrate oxidation...
March 2015: Parazitologiia
María R Rivero, Carlos E Motta, Martín M Salas, Alicia Chiaretta, Oscar D Salomón
This paper reports the first finding of Diphyllobothrium sp. eggs in Canis familiaris (domestic dog) from Puerto Iguazú, a subtropical city of Misiones province, Argentina. In 2013, two positive cases of Diphyllobothrium sp. eggs were detected during an annual parasitological survey of dogs. Dog feces were collected in vials containing 10% formalin and processed using Telemann's sedimentation and Sheather's flotation techniques. The two cases were detected in rural areas of the municipality. Since Misiones is not a part of the endemic area of diphyllobothriasis and given the fact that it is located in the three-border area of Argentina, Brazil and Paraguay, we consider this finding of great importance to public health...
July 2015: Revista Argentina de Microbiología
Xi Zhang, Han Wang, Jing Cui, Peng Jiang, Guo Mei Fu, Kan Zhong, Zi Fang Zhang, Zhong Quan Wang
Spirometra erinaceieuropaei is an important diphyllobothriid cestode whose larval plerocercoid (sparganum) can parasitise humans, causing sparganosis. In China, sparganosis is an important foodborne parasitic zoonosis and poses a serious threat to human health. However, our knowledge of the taxonomic classification of S. erinaceieuropaei and its relationship with other diphyllobothriid cestodes, such as Diphyllobothrium, remains fragmentary. In this study, we determined the complete sequences of cytochrome b (cytb) and cytochrome c oxidase subunit I (cox1) genes from 61 isolates of S...
October 2015: Infection, Genetics and Evolution
Eun Jeong Won, Jin Kim, Dong Wook Ryang
Conventional formalin-ether concentration method is a gold standard for the diagnosis of parasite infection. However, it may be time-consuming and laborious. We aimed to reveal the clinical usefulness of a modified formalin-ether concentration method using the Para Tube (KS Corporation, Korea) compared with the conventional method. A total of 117 fresh, unpreserved fecal samples composed to 90 negative controls and 27 positive controls with ova of Diphyllobothrium latum/D. nihonkaiense, ova of Clonorchis sinensis and cysts of Giardia lamblia were used in this study...
July 2015: Annals of Laboratory Medicine
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