journal
MENU ▼
Read by QxMD icon Read
search

Journal of Helminthology

journal
https://www.readbyqxmd.com/read/28325173/patterns-and-processes-influencing-helminth-parasites-of-arctic-coastal-communities-during-climate-change
#1
K V Galaktionov
This review analyses the scarce available data on biodiversity and transmission of helminths in Arctic coastal ecosystems and the potential impact of climate changes on them. The focus is on the helminths of seabirds, dominant parasites in coastal ecosystems. Their fauna in the Arctic is depauperate because of the lack of suitable intermediate hosts and unfavourable conditions for species with free-living larvae. An increasing proportion of crustaceans in the diet of Arctic seabirds would result in a higher infection intensity of cestodes and acanthocephalans, and may also promote the infection of seabirds with non-specific helminths...
March 22, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28322174/acanthocotyle-gurgesiella-n-sp-monogenea-acanthocotylidae-from-the-deep-sea-skate-gurgesiella-furvescens-rajidae-in-the-south-eastern-pacific
#2
L A Ñacari, F A Sepulveda, R Escribano, M E Oliva
Little is known about the diversity of parasites of the deep-sea fish of the world's oceans. Here, a new species of monogenean parasite of the deep-sea skate Gurgesiella furvescens is described. Specimens of parasites were obtained from the skin of two specimens of the dusky finless skate, G. furvescens (Rajidae), in the vicinity of Valparaiso (33°S, 72°W), central Chile, from midwater trawl fishing at depths of 350-450 m. Both morphological and molecular analyses were conducted to provide a full description of the new species, named Acanthocotyle gurgesiella...
March 21, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28274281/the-philometrid-nematode-philometroides-acreanensis-n-sp-from-the-stomach-wall-of-the-catfish-pimelodus-blochii-in-north-western-brazil
#3
P H O Cavalcante, F Moravec, C P Santos
A new nematode species, Philometroides acreanensis n. sp. (Philometridae), is described from female specimens recovered from the stomach wall of the freshwater catfish Pimelodus blochii Valenciennes (Pimelodidae) collected in the Acre River (Amazon River basin), Acre State, Brazil. Based on examination by light and scanning electron microscopy, the new species differs from the two other South American congeneric species mainly in the body length of the gravid female (240-280 mm), the length of the oesophagus (1...
March 9, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28264753/quantitative-real-time-pcr-qpcr-for-the-detection-and-quantification-of-dactylogyrid-parasites-infecting-lutjanus-guttatus
#4
L C Soler-Jiménez, A García-Gasca, E J Fajer-Ávila
Severe infections of the spotted rose snapper Lutjanus guttatus resulting from dactylogyrid monogeneans present a risk to aquaculture. Currently, the diagnosis of this infection requires the morphological identification and manual quantification of parasites. Based on the characterization of the 28S rRNA gene of dactylogyrid species present in L. guttatus, specific primers were designed for real-time polymerase chain reaction (qPCR) using EvaGreen® chemistry. The standard curve method estimated the number of dactylogyrids accurately...
March 7, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28260533/an-updated-look-at-the-uneven-distribution-of-cryptic-diversity-among-parasitic-helminths
#5
G Pérez-Ponce de León, R Poulin
Cryptic parasite diversity is a major issue for taxonomy and systematics, and for attempts to control diseases of humans, domestic animals and wildlife. Here, we re-examine an earlier report that, after correcting for sampling effort, more cryptic species of trematodes are found per published study than for other helminth taxa. We performed a meta-analysis of 110 studies that used DNA sequences to search for cryptic species in parasitic helminth taxa. After correcting for study effort and accounting for the biogeographical region of origins, we found that more cryptic species tend to be uncovered among trematodes, and fewer among cestodes and animal-parasitic nematodes, than in other helminth groups...
March 6, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28260532/the-role-of-chewing-lice-phthiraptera-philopteridae-as-intermediate-hosts-in-the-transmission-of-hymenolepis-microps-cestoda-cyclophyllidea-from-the-willow-ptarmigan-lagopus-lagopus-aves-tetraonidae
#6
D Pistone, M Lindgren, P Holmstad, N K Ellingsen, H Kongshaug, F Nilsen, A Skorping
The cestode Hymenolepis microps is an intestinal parasite of tetraonid birds, including the willow ptarmigan (Lagopus lagopus). This parasite is able to maintain a high prevalence and intensity throughout the year, even in a subarctic environment in bird populations with relatively low host densities, indicating effective transmission routes. Willow ptarmigan consume mainly vegetal material and active consumption of invertebrates is confined to the first two or three weeks of life. Ptarmigan are infected by different species of ectoparasites, of which two species of feather lice, Lagopoecus affinis and Goniodes lagopi, are the most abundant...
March 6, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28249628/morphological-and-molecular-characterization-of-selected-species-of-hysterothylacium-nematoda-raphidascarididae-from-marine-fish-in-iraqi-waters
#7
M Ghadam, M Banaii, E T Mohammed, J Suthar, S Shamsi
Hysterothylacium species are perhaps the most abundant and diverse group of marine ascaridoids; however, their life cycle and specific identification in larval stages in many parts of the world, particularly in Iraqi marine waters, have not been completely understood. In this study three members of the genus Hysterothylacium collected from Khor Abdulla in Iraq are morphologically described, genetically characterized and their relationship with other closely related taxa are compared and discussed. A new Hysterothylacium larval type in the fourth stage of development is described, and morphological and molecular evidence (based on the sequences of internal transcribed spacers) are provided for its distinction from previously known fourth-stage Hysterothylacium larval types...
March 2, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28249626/association-between-an-ectoparasitic-copepod-caligus-sp-and-the-monogenean-udonella-cf-caligorum-johnston-1835-on-a-catfish-population
#8
D Fogel, J L Fuentes, L M Soto, C López
We analysed the association between a monogenean (Udonella cf. caligorum Johnston 1835) and its copepod host (Caligus sp.) living on a wild population of Arius herzbergii Bloch, 1794 in a north-eastern coastal lagoon from Venezuela. This study characterized infestation levels and analysed the effects of monogeneans on the fecundity and hatching success of the copepod host, as well as damage to its egg capsules and genital complex. A total of 218 Caligus specimens were analysed (94 males, 110 females and 14 immature stages) in which a total of 1017 monogeneans were found...
March 2, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28215215/the-mitochondrial-genome-of-ancylostoma-tubaeforme-from-cats-in-china
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
journal
journal
25536
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"