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https://www.readbyqxmd.com/read/28928412/bacterial-communities-16s-rdna-fingerprinting-as-a-potential-tracing-tool-for-cultured-seabass-dicentrarchus-labrax
#1
Tânia Pimentel, Joana Marcelino, Fernando Ricardo, Amadeu M V M Soares, Ricardo Calado
Traceability of seafood has become crucial with market globalization and consumer's awareness. The present study used PCR-DGGE and 454 pyrosequencing to assess if bacterial communities fingerprint associated to seabass (Dicentrarchus labrax) skin mucus can be used to discriminate the geographic origin of fishes cultured in three semi-intensive fish farms. PCR-DGGE and pyrosequencing results were congruent and suggested that this molecular approach has the potential to trace fish farms with a spatial resolution <500 m...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28917489/the-effects-of-single-or-combined-administration-of-galactooligosaccharide-and-pediococcus-acidilactici-on-cutaneous-mucus-immune-parameters-humoral-immune-responses-and-immune-related-genes-expression-in-common-carp-cyprinus-carpio-fingerlings
#2
Maryam Modanloo, Siyavash Soltanian, Mostafa Akhlaghi, Seyed Hossein Hoseinifar
The present study was performed to investigate the effects of single or combined administration of galactooligosaccharide (GOS) and Pediococcus acidilactici on cutaneous mucus immune parameters, humoral immune responses and immune related genes expression in common carp (Cyprinus carpio) fingerlings. Carps were fed experimental diets for 8 weeks as follows: non-supplemented (Control), prebiotic diet (10 g/kg GOS), probiotic diet (1 g/kg [0.9 × 10(7) CFU] lyophilized P. acidilactici) and synbiotic diet (10 GOS in combination with 1 g/kg [0...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28903867/detection-accuracy-of-renibacterium-salmoninarum-in-chinook-salmon-oncorhynchus-tshawytscha-walbaum-from-non-lethally-collected-samples-effects-of-exposure-route-and-disease-severity
#3
Carolyn A Richards, Cheryl A Murphy, Travis O Brenden, Thomas P Loch, Mohamed Faisal
Bacterial kidney disease (BKD), caused by Renibacterium salmoninarum, threatens salmonid populations throughout the Northern hemisphere. Many fishery regulatory authorities require ongoing disease monitoring in hatcheries and spawning runs prior to gamete collection to prevent BKD outbreaks and spread. According to diagnostic protocols of the American Fisheries Society-Fish Health Section, monitoring for R. salmoninarum generally consists of lethal sampling of visceral organs from fish. However, non-lethal sampling would be preferable, especially for valuable broodstock or endangered species...
September 15, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28899776/the-effect-of-temperature-on-the-mucosal-igm-antibody-response-to-dnp-klh-in-channel-catfish-ictalurus-punctatus
#4
Miles D Lange, Carl D Webster
Bath immersion remains a practical route for immunizing against disease in channel catfish; however research efforts in this area have revealed variable results when activating mucosal Ab responses with different antigens. This is likely due to a number of factors including the individual species, age of the fish, preparation of the immunogens, and differences in the overall dosage and the duration of exposure to vaccines. The current study sought to evaluate the effect of water temperature on the in vivo mucosal adaptive immune response in channel catfish to a protein-hapten antigen, DNP-KLH...
September 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28882795/effects-of-cordyceps-militaris-spent-mushroom-substrate-and-lactobacillus-plantarum-on-mucosal-serum-immunology-and-growth-performance-of-nile-tilapia-oreochromis-niloticus
#5
Hien Van Doan, Seyed Hossein Hoseinifar, Mahmoud A O Dawood, Chanagun Chitmanat, Khambou Tayyamath
An 8-weeks feeding trial was performed to investigate the possible effects of supplementation of Nile tilapia diet with Cordyceps militaris spent mushroom substrate (SMS) single or combined with Lactobacillus plantarum on immune parameters and growth performance. For this aim, Nile tilapia fingerlings were fed with four experimental diets namely: Diet 1 (0 - control), Diet 2 (10 g kg(-1) SMS), Diet 3 (10(8) CFU g(-1)L. plantarum), and Diet 4 (10 g kg(-1) SMS + 10(8) CFU g(-1)L. plantarum). At the end of feeding trial, skin mucus parameters, serum immune parameters, and growth performance were measured...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28846140/an-examination-of-surface-epithelium-structures-of-the-embryo-across-the-genus-poeciliopsis-poeciliidae
#6
Tami M Panhuis, Megan Fris, Laura Tuhela, Lucia Kwan
In viviparous, teleost fish, with postfertilization maternal nutrient provisioning, embryonic structures that facilitate maternal-fetal nutrient transfer are predicted to be present. For the family Poeciliidae, only a handful of morphological studies have explored these embryonic specializations. Here, we present a comparative morphological study in the viviparous poeciliid genus, Poeciliopsis. Using microscopy techniques, we examine the embryonic surface epidermis of Poeciliopsis species that vary in their level of postfertilization maternal nutrient provisioning and placentation across two phylogenetic clades and three independent evolutionary origins of placentation...
August 28, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28827634/reputation-management-promotes-strategic-adjustment-of-service-quality-in-cleaner-wrasse
#7
Sandra A Binning, Olivia Rey, Sharon Wismer, Zegni Triki, Gaétan Glauser, Marta C Soares, Redouan Bshary
Adjusting one's behaviour in response to eavesdropping bystanders is considered a sophisticated social strategy, yet the underlying mechanisms are not well studied. Cleaner wrasse, Labroides dimidiatus, cooperate by eating ectoparasites off "client" fishes, or cheat (i.e. bite) and eat client mucus. Image scoring by bystander clients generally causes cleaners from socially-complex (i.e. high cleaner and client abundance; high client species richness) habitats to increase levels of cooperation. However, some individuals may periodically provide tactile stimulation to small resident clients, which attract bystanders close that are bitten, a form of tactical deception...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821298/efficacy-of-a-polyvalent-immersion-vaccine-against-flavobacterium-psychrophilum-and-evaluation-of-immune-response-to-vaccination-in-rainbow-trout-fry-onchorynchus-mykiss-l
#8
R Hoare, T P H Ngo, K L Bartie, A Adams
Rainbow trout fry syndrome (RTFS) is a disease caused by the Gram-negative bacterium Flavobacterium psychrophilum, responsible for significant economic losses in salmonid aquaculture worldwide. The diversity of F. psychrophilum isolates and the inherent difficulties in vaccinating juvenile fish has hampered the development of a vaccine for RTFS. Disease episodes tend to occur between 10-14 °C with necrotic lesions often seen on the skin surrounding the dorsal fin and tail. At present no commercial vaccines are available for RTFS in the UK, leaving antibiotics as the only course of action to control disease outbreaks...
August 18, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28819121/mucus-organisation-is-shaped-by-colonic-content-a-new-view
#9
J B J Kamphuis, M Mercier-Bonin, H Eutamène, V Theodorou
The colonic mucus barrier is commonly described as a continuous double layer covering the epithelium, separating the microbiota from the intestinal tissue. This model is currently considered valid throughout the colon. The colon is characterised by regional anatomo-functional specificities such as presence and consistency of contents and location. In this study, we characterised the organisation of the colonic mucus barrier in proximal and distal colon of rodents by histological and FISH staining, taking into account aforementioned specificities...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28804856/toxic-effects-of-copper-on-liver-and-cholinesterase-of-clarias-gariepinus
#10
Siti Nadzirah Padrilah, Siti Aqlima Ahmad, Nur Adeela Yasid, Mohd Khalizan Sabullah, Hassan Mohd Daud, Ariff Khalid, Mohd Yunus Shukor
The release of pollutants, especially heavy metals, into the aquatic environment is known to have detrimental effects on such an environment and on living organisms including humans when those pollutants are allowed to enter the food chain. The aim of this study is to analyse the damage to Clarias gariepinus' liver caused by exposure to different concentrations of copper. In the present study, samples of C. gariepinus were exposed to sub-lethal copper sulphate (CuSO4) concentrations (from 0.2 to 20.0 mg/L) for 96 h...
August 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28799679/scanning-electron-microscope-investigation-on-the-process-of-healing-of-skin-wounds-in-cirrhinus-mrigala
#11
Neeraj Verma, Usha Kumari, Swati Mittal, Ajay Kumar Mittal
Present scanning electron microscope study, reports healing of excised skin wounds in Cirrhinus mrigala. Healing process of wounds, inflicted on head skin, using biopsy punch was observed at intervals-0 hour (h), 1, 2, 4, 6, 12 h, 1 day (d) 2 and 4 d. Accumulation of mucus in wound region within 1h after infliction of wound has been considered an immediate measure to provide protection to injured skin from microbial invasion and other external environmental hazards. On infliction of wound, mobilization of epithelial cells at wound edge is associated with disturbance of coaptive relationship of epithelial cells till original coaptive stability is reached...
August 11, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28798951/histomorphological-description-of-the-digestive-system-of-pebbly-fish-alestes-baremoze-joannis-1835
#12
Nasser Kasozi, Gerald Iwe Degu, Julius Mukalazi, Charles Drago Kato, Majid Kisekka, Akisoferi Owori Wadunde, Godfrey Kityo, Victoria Tibenda Namulawa
Histomorphological studies of the digestive system of Alestes baremoze captured from Lake Albert, Uganda, were done using standard procedures. These revealed that A. baremoze has a fleshy-lipped terminal small mouth, large molar, short oesophagus, a three-lobed liver, pouch-like stomach, a nine-fingered caeca, and a long tubular intestine. A stratified squamous epithelium with numerous mucus-secreting cells lined the lips with no taste buds. Stratified squamous epithelia lined the oesophagus in the anterior portion which turned into a columnar epithelium towards the stomach...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28743623/novel-mannose-binding-natterin-like-protein-in-the-skin-mucus-of-atlantic-cod-gadus-morhua
#13
Binoy Rajan, Deepti M Patel, Yoichiro Kitani, Kiron Viswanath, Monica F Brinchmann
This study presents the first report of purification of natterin-like protein (Nlp) in a non-venomous fish. The peptide identities of purified cod Nlp were confirmed through LC-MSMS and matched to a cod expressed sequence tag (EST). A partial cod nlp nucleotide sequence was amplified and sequenced based on this EST. Multiple sequence alignment of cod Nlp showed considerable homology with other teleost Nlps and the presence of an N-terminal jacalin-like lectin domain coupled with a C-terminal toxin domain. nlp expression was higher in skin, head kidney, liver and spleen than in other tissues studied...
July 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28737155/dawestrema-cycloancistrium-monogenea-from-the-head-pores-of-arapaimas
#14
Cláudia Portes Santos, Maralina Torres da Silva, Franti Ek Moravec
Arapaima gigas is one of the main cultured fish species in South America, and monogenean parasites of this species cause large economic losses to fish farmers. During surveys of the parasites of cultured arapaimas from Mexiana Island in the Amazon River Delta, Rio Branco, in northwestern Brazilian Amazonia, and Yurimaguas, Peru, the monogenean Dawestrema cycloancistrium was found in the gills of A. gigas as well as in previously unreported sites, i.e. the head pores and chambers. The aim of this study was to investigate the transmission route of this parasite and its geographical distribution as well as to describe its morphology as observed by light and confocal imaging...
July 24, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28725216/survey-of-antibiotic-producing-bacteria-associated-with-the-epidermal-mucus-layers-of-rays-and-skates
#15
Kim B Ritchie, Melbert Schwarz, Joseph Mueller, Valeri A Lapacek, Daniel Merselis, Catherine J Walsh, Carl A Luer
Elasmobranchs represent a distinct group of cartilaginous fishes that harbor a remarkable ability to heal wounds rapidly and without infection. To date very little work has addressed this phenomenon although it is suggested that antibiotic capabilities associated with epidermal surfaces may be a factor. The study of benefits derived from mutualistic interactions between unicellular and multicellular organisms is a rapidly growing area of research. Here we survey and identify bacterial associates of three ray and one skate species in order to assess the potential for antibiotic production from elasmobranch associated bacteria as a novel source for new antibiotics...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28711392/corrigendum-to-dietary-lactobacillus-acidophilus-modulated-skin-mucus-protein-profile-immune-and-appetite-gene-expression-in-gold-fish-carassius-auratus-gibelio-fish-shellfish-immunol-59c-2016-149-154
#16
Marjan Hosseini, Hamed Kolangi Miandare, Ali Shabani, Seyed Hossein Hoseinifar, Peyman Yarahmadi
No abstract text is available yet for this article.
July 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28701764/vertically-and-horizontally-transmitted-microbial-symbionts-shape-the-gut-microbiota-ontogenesis-of-a-skin-mucus-feeding-discus-fish-progeny
#17
François-Étienne Sylvain, Nicolas Derome
Fish gut microbial communities play key functions for their hosts, but their ontogenesis is poorly understood. Recent studies on the zebrafish suggest that gut symbionts are recruited naturally through horizontal transmission from environmental water. We used an alternative fish model, the discus (Symphysodon aequifasciata), to identify the main factors driving fish gut microbiota ontogenesis. The discus exhibits a unique parenting behavior: both discus parents vertically feed their fry with a cutaneous mucus secretion during three weeks post-hatching...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28684324/effects-of-dietary-polyvinylchloride-microparticles-on-general-health-immune-status-and-expression-of-several-genes-related-to-stress-in-gilthead-seabream-sparus-aurata-l
#18
Cristóbal Espinosa, Alberto Cuesta, María Ángeles Esteban
It is a long-recognized fact that marine plastic debris contaminates the oceans and seas of the entire world. Even though their effects on the aquatic biota are not well documented or understood. The effects of dietary polyvinylchloride microparticles (PVC-MPs) on the general health, immune status and some stress markers were studied using gilthead seabream (Sparus aurata) as a model of marine fish. Thirty specimens were randomly placed in three running sea water aquaria and fish in each aquarium received an experimental diet containing 0 (control), 100 or 500 mg kg(-1) of PVC-MPs for 30 days...
July 3, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28678609/randomized-controlled-trial-evaluating-the-effect-of-multi-strain-probiotic-on-the-mucosal-microbiota-in-canine-idiopathic-inflammatory-bowel-disease
#19
Robin White, Todd Atherly, Blake Guard, Giacomo Rossi, Chong Wang, Curtis Mosher, Craig Webb, Steve Hill, Mark Ackermann, Peter Sciabarra, Karin Allenspach, Jan Suchodolski, Albert E Jergens
The intestinal microbiota is increasingly linked to the pathogenesis of idiopathic inflammatory bowel disease (IBD) in dogs. While studies have reported alterations in fecal (luminal) microbial populations, only limited information is available about the mucosal microbiota of IBD dogs at diagnosis and following medical therapy. Our aim was to characterize the mucosal microbiota and determine the clinical, microbiological, and mucosal homeostatic effects of probiotic treatment in dogs with IBD. Thirty four IBD dogs were randomized to receive standard therapy (ST = diet + prednisone) with or without probiotic...
July 5, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28602743/apple-cider-vinegar-boosted-immunomodulatory-and-health-promoting-effects-of-lactobacillus-casei-in-common-carp-cyprinus-carpio
#20
Roghieh Safari, Seyed Hossein Hoseinifar, Shabnam Nejadmoghadam, Mohsen Khalili
The present study was performed to investigate the immunomodulatory and health promoting effects of combined or singular administration of apple cider vinegar (ACV) and Lactobacillus casei in common carp (Cyprinus carpio) diet. An 8-week feeding trial was designed with following treatments: Control (basal diet), Pro (contains 10(7) CFU g(-1)L. casei), LACV (contains 1% ACV), HACV (contains 2% ACV), Pro + LACV (contains 10(7) CFU g(-1)L. casei plus 1% ACV) and Pro + HACV (contains 10(7) CFU g(-1)L...
August 2017: Fish & Shellfish Immunology
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