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https://www.readbyqxmd.com/read/28804856/toxic-effects-of-copper-on-liver-and-cholinesterase-of-clarias-gariepinus
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
https://www.readbyqxmd.com/read/28602735/enrichment-of-common-carp-cyprinus-carpio-diet-with-medlar-mespilus-germanica-leaf-extract-effects-on-skin-mucosal-immunity-and-growth-performance
#12
Seyed Hossein Hoseinifar, Hassan Khodadadian Zou, Hamed Kolangi Miandare, Hien Van Doan, Nicholas Romano, Maryam Dadar
A feeding trial was performed to assess the effects of dietary Medlar (Mespilus germanica) leaf extract (MLE) on the growth performance, skin mucus non-specific immune parameters as well as mRNA levels of immune and antioxidant related genes in the skin of common carp (Cyprinus carpio) fingerlings. Fish were fed diets supplemented with graded levels (0, 0.25, 0.50, and 1.00%) of MLE for 49 days. The results revealed an improvement to the growth performance and feed conversion ratio in MLE fed carps (P < 0...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28578127/effects-of-cordyceps-militaris-spent-mushroom-substrate-on-mucosal-and-serum-immune-parameters-disease-resistance-and-growth-performance-of-nile-tilapia-oreochromis-niloticus
#13
Hien Van Doan, Seyed Hossein Hoseinifar, Wanaporn Tapingkae, Chanagun Chitmanat, Supamit Mekchay
The aim of present study was determination effects of dietary administration of C. militaris spent mushroom substrate (SMS) on mucosal and serum immune parameters, disease resistance, and growth performance of Nile tilapia (Oreochromis niloticus). Two hundred twenty five fish of similar weight (37.28 ± 0.10 g) were assigned to the following diets [0 (T1- Control), 5 (T2), 10 (T3), 20 (T4) and 40 g kg(-1) (T5) SMS]. After 60 days of feeding trial, growth performance, skin mucus lysozyme and peroxidase activities as well as serum innate immune were measured...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28504578/effects-of-dietary-chitosan-on-growth-lipid-metabolism-immune-response-and-antioxidant-related-gene-expression-in-misgurnus-anguillicaudatus
#14
J Yan, C Guo, M A O Dawood, J Gao
This study was performed to evaluate the effects of dietary chitosan supplementation on growth performance, lipid metabolism, gut microbial, antioxidant status and immune responses of juvenile loach (Misgurnus anguillicaudatus). Five experimental diets were formulated to contain graded levels of chitosan (0 (control), 0.5, 1, 2 and 5% CHI) for 50 days. Results of the present study showed that body weight gain was significantly higher in fish fed chitosan supplemented diets in dose dependent manner than control group...
May 15, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28501445/local-and-systemic-humoral-immune-response-in-farmed-atlantic-salmon-salmo-salar-l-under-a-natural-amoebic-gill-disease-outbreak
#15
Mar Marcos-López, Cristóbal Espinosa Ruiz, Hamish D Rodger, Ian O'Connor, Eugene MacCarthy, M Ángeles Esteban
Amoebic gill disease (AGD), caused by the protozoan parasite Neoparamoeba perurans, is one of the most significant infectious diseases for Atlantic salmon (Salmo salar L.) mariculture. The present study investigated the humoral immune response (both local in gill mucus and systemic in serum) of farmed Atlantic salmon naturally infected with N. perurans in commercial sea pens, at two different stages of the disease and after freshwater treatment. Parameters analysed included activity of immune related enzymes (i...
May 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28449237/the-environmental-and-host-associated-bacterial-microbiota-of-arctic-seawater-farmed-atlantic-salmon-with-ulcerative-disorders
#16
C Karlsen, K F Ottem, Øyvind Jakobsen Brevik, M Davey, H Sørum, H C Winther-Larsen
The Norwegian aquaculture of Atlantic salmon (Salmo salar L.) is hampered by ulcerative disorders associated with bacterial infections. Chronic ulceration may provide microenvironments that disturb the normal microbial biodiversity of external surfaces. Studying the composition of microbial communities in skin ulcers will enhance our understanding of ulcer aetiology. To achieve this, we tested marine farmed Atlantic salmon and sampled the base and edge of ulcers at the end of winter (April) and end of summer (September), in addition to skin mucus of healthy individuals...
April 27, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28439685/histological-and-ultrastructural-study-of-myxobolus-mugchelo-parenzan-1966-with-initial-histopathology-survey-of-the-liza-ramada-host-intestine
#17
Mykola Ovcharenko, Bahram Sayyaf Dezfuli, Giuseppe Castaldelli, Mattia Lanzoni, Luisa Giari
This paper provides histological and ultrastructural data on Myxobolus mugchelo (Myxozoa), a parasite of the intestinal wall of thinlip mullet Liza ramada from the Comacchio lagoons (Northern Adriatic Sea, Italy). About 80% of the examined mullets were infected with this myxozoan. In histological sections, the plasmodia appeared rounded to ovoid and spindle shaped, measured 181.61 ± 97 × 122.79 ± 53.16 μm (mean ± standard deviation, SD) in size. Early sporogenic plasmodia were located primarily in the muscle layer where no pronounced inflammatory response was detected...
April 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28433714/effects-of-dietary-supplementation-with-fenugreek-seeds-alone-or-in-combination-with-probiotics-on-gilthead-seabream-sparus-aurata-l-skin-mucosal-immunity
#18
F A Guardiola, A Bahi, A Bakhrouf, M A Esteban
Despite increasing interest in modulating the immune response of fish, providing a combination of probiotics and herbal immunostimulants in aquafeed has rarely has been studied. The effects on gilthead seabream (Sparus aurata L.) of the dietary administration of fenugreek (Trigonella foenum graecum) seeds alone (FE), or combined with one of the following probiotic strains: Bacillus licheniformis (FEBL), Lactobacillus plantarum (FELP) or Bacillus subtilis (FEBS) were evaluated. Fish were fed a control or one of the supplemented diets for 3 weeks...
April 19, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28431143/characterisation-of-the-gill-mucosal-bacterial-communities-of-four-butterflyfish-species-a-reservoir-of-bacterial-diversity-in-coral-reef-ecosystems
#19
Miriam Reverter, Pierre Sasal, N Tapissier-Bontemps, D Lecchini, M Suzuki
While recent studies have suggested that fish mucus microbiota play an important role in homeostasis and prevention of infections, very few studies have investigated the bacterial communities of gill mucus. We characterised the gill mucus bacterial communities of four butterflyfish species and although the bacterial diversity of gill mucus varied significantly between species, Shannon diversities were high (H = 3.7-5.7) in all species. Microbiota composition differed between butterflyfishes, with Chaetodon lunulatus and C...
June 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28424344/mutualistic-cleaner-fish-maintains-high-escape-performance-despite-privileged-relationship-with-predators
#20
Simon Gingins, Dominique G Roche, Redouan Bshary
Predatory reef fishes regularly visit mutualistic cleaner fish (Labroides dimidiatus) to get their ectoparasites removed but show no interest in eating them. The concept of compensated trait loss posits that characters can be lost if a mutualistic relationship reduces the need for a given trait. Thus, selective pressures on escape performance might have relaxed in L. dimidiatus due to its privileged relationship with predators. However, the cost of failing to escape a predatory strike is extreme even if predation events on cleaners are exceptionally rare...
April 26, 2017: Proceedings. Biological Sciences
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