scholarly journals Dual transcriptomics reveals co-evolutionary mechanisms of intestinal parasite infections in blue mussels Mytilus edulis

2018 ◽  
Vol 27 (6) ◽  
pp. 1505-1519 ◽  
Author(s):  
Marieke E. Feis ◽  
Uwe John ◽  
Ana Lokmer ◽  
Pieternella C. Luttikhuizen ◽  
K. Mathias Wegner
2020 ◽  
Vol 644 ◽  
pp. 91-103
Author(s):  
D Bearham ◽  
MA Vanderklift ◽  
RA Downie ◽  
DP Thomson ◽  
LA Clementson

Benthic suspension feeders, such as bivalves, potentially have several different food sources, including plankton and resuspended detritus of benthic origin. We hypothesised that suspension feeders are likely to feed on detritus if it is present. This inference would be further strengthened if there was a correlation between δ13C of suspension feeder tissue and δ13C of particulate organic matter (POM). Since detritus is characterised by high particulate organic matter (POC):chl a ratios, we would also predict a positive correlation between POM δ13C and POC:chl a. We hypothesised that increasing depth and greater distance from shore would produce a greater nutritional reliance by experimentally transplanted blue mussels Mytilus edulis on plankton rather than macrophyte-derived detritus. After deployments of 3 mo duration in 2 different years at depths from 3 to 40 m, M. edulis sizes were positively correlated with POM concentrations. POC:chl a ratios and δ13C of POM and M. edulis gill tissue decreased with increasing depth (and greater distance from shore). δ13C of POM was correlated with δ13C of M. edulis. Our results suggest that detritus comprised a large proportion of POM at shallow depths (<15 m), that M. edulis ingested and assimilated carbon in proportion to its availability in POM, and that growth of M. edulis was higher where detritus was present and POM concentrations were higher.


2017 ◽  
pp. 119-124
Author(s):  

Introduction: Intestinal parasite infections werecommonintropical country such as Vietnam. Having good knowledge of parasitic infectious prevention and changing risk behaviors can decrease the infection rate. Objective: To evaluate the parasitic infectious rate in Vinh Thai community before and after being health education and the changing of knowledge of parasitic infectious prevention and risk behaviors. Materials and methods: 60 households in Vinh Thai commune were interviewed their knowledge of parasitic infectious prevention and examined intestinal parasite infection by Kato technique and then trained the knowledge of parasitic infectious prevention. The interview and examination parasite infectiousrate were carried out after 6 months to evaluating their knowledge. Result: Before health education, the rate of intestinal parasite infection was 17.4% with the prevalence of Ascaris lumbricoides, hookworm, whipworm, pinworm, small fluke worm and co-infection with A. lumbricoides - whipworm, hookworm-whipworm were 0.1%; 8.0%; 5.8%; 0.6%; 0.3%; 1.2% and 3.0% respectively. Six months later the rate of intestinal parasite infection was decreased in 12.6% even though not statistical significantly. However, there were no case of small fluke worm and co-infection with hookworm-whipworm. Receiving health education, their knowledge of parasitic infectious prevention was higher significantly but their risk behaviors were not changed so much. Conclusion: Health education can change the rate of parasite infection with higher knowledge of parasitic infectious prevention but it was necessary continuous study to change the risk behaviors. Key words: intestinal parasite, health education


2016 ◽  
pp. 105-111
Author(s):  
Nu Phuong Anh Ton ◽  
Thi Minh Chau Ngo

Introduction: Intestinalparasite infections still are very common in tropical country such as Vietnam. Therefore evaluation of the prevalence of them should be done. Materials and methods: A crosssectional descriptivestudy were carried out to use the wet mount direct examination, Kato and ELISA technique for evaluation the rate of intestinal parasite infections, interviewed them to reveal their life’s hygenic condition, knowledge and risk behaviour of intestinal parasite infections in 640 patients attending to the in Hue University of hospital. Result: The rate of soiltransmitted intestinal helminth were lower than the foodborne infection of cestode and trematode such as: Taenia solium/saginata 3.64%, Clonorchis sinensis 2.73%. The rate of positive antibody of rare intestinal parasite were Fasciola gigantica 40.68%, E. histolytica/dispar 43.75%, Toxocara canis 32.43%, Gnasthostoma spinigerum 37.5%, Taenia solium 51.43%, Strongyloidesstercoralis 16.67%. Most of people has hygenic life condition with hygenic water available. The popular knowledge of intestinal parasite diseases of transmission, pathology, prevention and treatment were concentrate on oiltransmittedintestinal helminth.There were high rate of platyhelminths infectious behaviourssuch as: eating raw water plant 75.6%, eating raw beef 80.6%, eating raw pork 72.2%, eating raw fish 11.8%, bare foot 34.2%. Conclusions: The result of our study showed that the higher rate of foodborne cestode and trematode than soiltransmittedhelminth correspond tothe hygenic life condition, the knowledge of the diseases and risk behavior of intestinal parasites infection. Key words: Helminth, cestode, trematode


2021 ◽  
Vol 11 (2) ◽  
pp. 46-60
Author(s):  
Igor Bakhmet ◽  
Natalia Fokina ◽  
Tatiana Ruokolainen

Blue mussels, Mytilus edulis, inhabiting tidal zones, are naturally exposed to fluctuating environmental conditions (e.g., fluctuations in temperature and salinities), while horse mussels, Modiolus modiolus, live under relatively invariable shelf water conditions. The present investigation tested the hypothesis: blue mussels, in comparison to horse mussels, have an increased ability to tolerate the stress of pollution combined with low salinity. To assess the response of blue mussels and horse mussels to oil pollution at seawater salinities of 25 psu (normal) and 15 psu (low), we used a combination of heart rate and lipid composition as physiological and biochemical indicators, respectively. A sharp decrease in heart rate as well as important fluctuations in cardiac activity was observed under all oil concentrations. Modifications in the concentrations of the main membrane lipid classes (phosphatidylcholine, phosphatidylethanolamine, and cholesterol) and storage lipids (primarily triacylglycerols) in response to different crude oil concentrations were time- and dose-dependent. Both chosen indicators showed a high sensitivity to crude oil contamination. Furthermore, both bivalve species showed similar responses to oil pollution, suggesting a universal mechanism for biochemical adaptation to crude oil pollution.


2021 ◽  
Vol 166 ◽  
pp. 112180
Author(s):  
Michael Zuykov ◽  
Galina Kolyuchkina ◽  
Graeme Spiers ◽  
Michel Gosselin ◽  
Philippe Archambault ◽  
...  

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