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Journal of Helminthology

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https://www.readbyqxmd.com/read/28215215/the-mitochondrial-genome-of-ancylostoma-tubaeforme-from-cats-in-china
#1
X L Shi, Y Q Fu, A Y Abdullahi, M W Wang, F Yang, X G Yu, W D Pan, X X Yan, J X Hang, P Zhang, G Q Li
Ancylostoma tubaeforme may infect canids, felids and humans, and pose a potential risk to public health. Polymerase chain reaction (PCR) techniques were used to amplify the complete mitochondrial (mt) genome sequence of A. tubaeforme from cats and to analyse its sequence characteristics after molecular identification based on the internal transcribed spacer ITS1+ sequence. The results show that the complete mt genome sequence (GenBank accession number KY070315) of A. tubaeforme from cats was 13,730 bp in length, including 12 protein-coding genes, 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, two non-coding regions and an AT-rich region...
February 20, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28215208/editorial-parasitic-helminths-in-latin-america-and-the-caribbean
#2
C Fernández
No abstract text is available yet for this article.
February 20, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28215202/helminth-parasites-of-the-chub-mackerel-scomber-colias-off-the-tunisian-coast-and-their-use-in-stock-discrimination
#3
M Feki, M Châari, L Neifar, L Boudaya
Nine helminth parasites were used as biological tags to discriminate diverse areas of Scomber colias Gmelin, 1789. During three seasons, a total of 369 fish were examined in four zones off the Tunisian coast, including Bizerte in the north, Kelibia and Mahdia in the centre and Zarzis in the south. Discriminant analyses were used to identify distinct areas of S. colias. Fish from Bizerte were grouped as one area and were correlated negatively with the monogenean Grubea cochlear and the digenean Lecithocladium excisum...
February 20, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28181472/circulating-microfilariae-in-haematological-malignancies-do-they-have-a-role-in-pathogenesis
#4
L S Kerketta, K Ghosh
Filariasis is very common in tropical countries. It is endemic in the coastal areas of India. We report four cases of haematological malignancy where peripheral blood and bone marrow smears did not show any microfilariae but conventional cytogenetic preparations from all the four cases showed the presence of parasites. Their morphology confirmed the diagnosis of all cases as bancroftian filariasis. Therefore all types of cytogenetic preparations should be screened carefully in the endemic areas along the coastal zones of India for the presence of this parasite...
February 9, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28166844/parasite-life-cycle-studies-a-plea-to-resurrect-an-old-parasitological-tradition
#5
I Blasco-Costa, R Poulin
Many helminth taxa have complex life cycles, involving different life stages infecting different host species in a particular order to complete a single generation. Although the broad outlines of these cycles are known for any higher taxon, the details (morphology and biology of juvenile stages, specific identity of intermediate hosts) are generally unknown for particular species. In this review, we first provide quantitative evidence that although new helminth species are described annually at an increasing rate, the parallel effort to elucidate life cycles has become disproportionately smaller over time...
February 7, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28162101/fasciola-hepatica-infections-in-cattle-and-the-freshwater-snail-galba-truncatula-from-dakhla-oasis-egypt
#6
W M Arafa, A I Hassan, S A M Snousi, Kh M El-Dakhly, P J Holman, T M Craig, S M Aboelhadid
Infection by Fasciola species was investigated in seven districts of Dakhla Oasis, Egypt, through abattoir inspection of cattle livers for adult worms and sedimentation of faecal samples from local cattle to detect Fasciola eggs. In addition, lymnaeid snails collected from the study area were examined microscopically for developmental stages of Fasciola spp. Abattoir inspection revealed that 51 out of 458 cattle livers (11.1%) contained adult flukes, which were identified morphologically as Fasciola hepatica...
February 6, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28132663/intraguild-interactions-between-five-congeneric-species-of-thaparocleidus-monogenoidea-from-the-freshwater-shark-wallago-attu-lucknow-india
#7
N Agrawal, S Rajvanshi, A Asthana
The fish host (Wallago attu) and monogenoid parasite (Thaparocleidus sp.) have been recorded during 2 years (2011 and 2012) to investigate intra/interspecific interactions among query species (T. sudhakari (Gusev, 1976) Lim, 1996; T. indicus (Kulkarni, 1969) Lim, 1996; T. gomtius (Jain, 1952) Lim, 1996; T. yogendraii Agrawal, 1981 and T. wallagonius Jain, 1952) in the light of parasitic worm burden, morphological and molecular data. Each species is highly host specific (oioxenous), with a specialized functional niche...
January 30, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28132657/copro-pcr-prevalence-of-echinococcus-granulosus-infection-in-dogs-in-kerman-south-eastern-iran
#8
S R Mirbadie, H Kamyabi, M A Mohammadi, S Shamsaddini, M F Harandi
The main objective of this study was to determine the prevalence of taeniid parasites and the specific detection of Echinococcus granulosus using copro-DNA polymerase chain reaction (PCR) analysis in the stray dogs of Kerman, south-eastern Iran. From September 2013 to May 2014, faecal samples of stray dogs were collected from different parts of the city of Kerman and its suburbs. Faecal samples from dogs were collected randomly within 24 h of defecation. All samples were transferred to the research lab and coprological examinations were conducted by the formalin-ether concentration method...
January 30, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28124636/is-cestode-infection-intensity-associated-with-decreased-body-condition-in-the-eurasian-woodcock-scolopax-rusticola
#9
C Sánchez-García, E Harris, A C Deacon, R Bray, A N Hoodless
The Eurasian woodcock Scolopax rusticola is a widespread woodland specialist and a widely harvested quarry species throughout its European wintering areas, including Britain. Woodcock are prone to cestodiasis, but prevalence levels and possible effects on body condition remain under-studied. We studied the prevalence, abundance and intensity of cestodiasis in 161 woodcock harvested in four British regions in December and January during two consecutive winters (2013/14 and 2014/15). Cestodiasis prevalence was 90%, and there was no difference in prevalence between birds harvested in Cornwall, Wessex, East Anglia and Scotland...
January 26, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28124629/contracaecum-osculatum-and-other-anisakid-nematodes-in-grey-seals-and-cod-in-the-baltic-sea-molecular-and-ecological-links
#10
S Zuo, P W Kania, F Mehrdana, M H Marana, K Buchmann
Populations of grey seals (Halichoerus grypus), sprats (Sprattus sprattus) and cod (Gadus morhua) in the Baltic Sea are relatively stationary. The present work, applying classical and molecular helminthological techniques, documents that seals and cod also share a common parasite, the anisakid nematode Contracaecum osculatum, which uses seals as the final host and fish as transport hosts. Sequencing mitochondrial genes (COX1 and COX2) in adult worms from seals and third-stage larvae from livers of Baltic fish (sprats and cod), showed that all gene variants occur in both seals and fish...
January 26, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28112060/parasitological-versus-molecular-diagnosis-of-strongyloidiasis-in-serial-stool-samples-how-many
#11
E Dacal, J M Saugar, T Soler, J M Azcárate, M S Jiménez, F J Merino, E Rodríguez
Strongyloidiasis is usually an asymptomatic disease in immunocompetent patients, caused by Strongyloides stercoralis. However, in immunocompromised patients it can produce a severe clinical profile. Therefore, a correct diagnosis is necessary in these cases and in those chronic asymptomatic patients. The low sensitivity of classical parasitological techniques requires the analysis of multiple serial stool samples. Molecular diagnostic techniques represent an improvement in the detection of the parasite. The objective of this study was to evaluate the minimum number of samples necessary to achieve maximum sensitivity by real-time polymerase chain reaction (PCR)...
January 23, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28100285/characterization-of-the-complete-mitochondrial-genome-of-setaria-digitata-nematoda-setariidae-from-china
#12
G-H Liu, J-Y Li, X-Q Zhu
Setaria digitata is a filarial parasite that causes fatal cerebrospinal nematodiasis in goats, horses and sheep, resulting in substantial economic losses to livestock farmers. In the present study, the complete mitochondrial (mt) genome of S. digitata from China was determined, characterized and compared with that of S. digitata from Sri Lanka. The identity of the mt genomes was 98.3% between S. digitata from China and Sri Lanka, and the complete mt genome sequence of S. digitata from China was slightly shorter (25 bp) than that from Sri Lanka...
January 19, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28095927/small-alteration-big-impacts-effects-of-small-scale-riparian-forest-management-on-host-parasite-dynamics-in-streams
#13
C Lagrue, A A Besson, A Lecerf
Environmental changes and ecological disturbances can have large and unpredictable effects on parasite dynamics. Increasing human impacts on freshwater ecosystems through land use may thus modify the distribution and abundance of parasites and have cascading effects on host populations. Here we tested the effects of small-scale riparian forest management on the nematode Cystidicoloides ephemeridarum and its insect intermediate host Ephemera danica in forested streams. We assessed the impacts of harvesting riparian trees on parasite prevalence and abundance concomitantly with host densities...
January 18, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28069083/pcr-primers-for-straightforward-differentiation-of-haemonchus-contortus-haemonchus-placei-and-their-hybrids
#14
M R V Amarante, M C Santos, C C Bassetto, A F T Amarante
Haemonchus contortus and Haemonchus placei are among the major parasites of small ruminants and cattle. Although infection with these nematodes is host-specific, with H. placei predominating in cattle and H. contortus in sheep, cross-infections are observed in areas where both parasites are sympatric, and hybrid offspring can occur. Therefore, a fast and precise method is required for differentiating the parasites. Identification based on spicule morphometry is the most common technique for differentiating Haemonchus species...
January 10, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28069081/influence-of-triaenophorus-nodulosus-plerocercoids-cestoda-pseudophyllidea-on-the-occurrence-of-intestinal-helminths-in-the-perch-perca-fluviatilis
#15
N J Morley, J W Lewis
Concurrent infections of helminths in vertebrates are widespread and may demonstrate synergistic, antagonistic or negligible levels of interactions between species that share a common site. However, indirect interactions between species that occur in different organs of a host are poorly documented, particularly in fish. Plerocercoids of Triaenophorus nodulosus are common liver infections of European perch (Perca fluviatilis). These larval cestodes cause extensive liver damage, resulting in systemic pathologies that include alteration of the physiochemical environment of the intestine...
January 10, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/27976599/helminth-parasites-of-finfish-commercial-aquaculture-in-latin-america
#16
L C Soler-Jiménez, A I Paredes-Trujillo, V M Vidal-Martínez
Latin America has tripled production by aquaculture up to 78 million tonnes in the past 20 years. However, one of the problems that aquaculture is facing is the presence of helminth parasites and the diseases caused by them in the region. In this review we have collected all the available information on helminths affecting commercial aquaculture in Latin America and the Caribbean (LAC), emphasizing those causing serious economic losses. Monogeneans are by far the most common and aggressive parasites affecting farmed fish in LAC...
December 15, 2016: Journal of Helminthology
https://www.readbyqxmd.com/read/27905270/gastrointestinal-helminth-fauna-of-rodents-from-cambodia-emphasizing-the-community-ecology-of-host-parasite-associations
#17
K Chaisiri, M Chou, C C Siew, S Morand, A Ribas
Extensive field surveys of rodents were conducted in Cambodia from 2008 to 2014 to study the diversity and ecology of helminth infection in wild rodent populations. Gastrointestinal helminths were isolated from 14 species of rodents (569 individuals) trapped from different habitats (forest, dry land, rain-fed land and human settlements) in four provinces of Cambodia (Krong Preah Sihanouk, Mondolkiri, Pursat and Steung Treng). The average prevalence of parasitic infection was 58.5% (range, 16.0-64.7%), and 19 helminth taxa were identified in total...
December 1, 2016: Journal of Helminthology
https://www.readbyqxmd.com/read/27905269/climate-influences-assemblages-of-abomasal-nematodes-of-sheep-on-steppe-pastures-in-the-east-of-algeria
#18
I Zouyed, J Cabaret, B Bentounsi
It is a common view that assemblages of parasitic nematodes are influenced by climatic conditions; however, there are only a few articles available regarding those that infect farm animals. We investigated the relationship between climate variables and infection with abomasal trichostrongyles in 335 1-year-old rams grazed on steppe pastures in Eastern Algeria. Abomasa were collected from 12 local slaughterhouses located in four climatic areas (from humid to arid) and the worms extracted, identified and counted...
December 1, 2016: Journal of Helminthology
https://www.readbyqxmd.com/read/27890039/genetic-diversity-of-infective-larvae-of-gnathostoma-spinigerum-nematoda-gnathostomatidae-in-freshwater-swamp-eels-from-thailand
#19
P Eamsobhana, D Wanachiwanawin, K Roongruangchai, S L Song, H S Yong
Human gnathostomiasis is a food-borne zoonosis caused by a tissue nematode of the genus Gnathostoma. The disease is highly endemic in Asia, including Thailand. The freshwater swamp eel (Monopterus albus), the second intermediate host of the gnathostome nematode, has an important role in transmitting the infection in Thailand. Surveys on the infective larvae of Gnathostoma spinigerum based on morphological features in freshwater swamp eels have been performed continuously and reported in Thailand. However, there is still limited molecular data on intra-species variations of the parasite...
November 28, 2016: Journal of Helminthology
https://www.readbyqxmd.com/read/27866481/effect-of-inoculum-age-and-physical-parameters-on-in-vitro-culture-of-the-entomopathogenic-nematode-steinernema-feltiae
#20
L G Leite, D I Shapiro-Ilan, S Hazir, M A Jackson
Entomopathogenic nematodes (EPNs) of the families Steinernematidae and Heterorhabditidae have a symbiotic association with bacteria which makes them virulent against insects. EPNs have been mass produced using in vivo and in vitro methods, including both solid and liquid fermentation. This study assessed the effect of nematode inoculum age on the production of Steinernema feltiae in liquid, solid and biphasic processes. Several physical parameters were also assessed: the effect of medium viscosity, flask size and aeration speed on the recovery and yield of infective juveniles (IJs)...
November 21, 2016: Journal of Helminthology
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