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mucus fishing

Marjan Hosseini, Hamed Kolangi Miandare, Seyed Hossein Hoseinifar, Peyman Yarahmadi
The objective of the present study was to investigate the effect of dietary Lactobacillus acidophilus on skin mucus protein pattern, immune and appetite related genes expression as well as growth performance in gold fish (Carassius auratus gibelio). Three hundred healthy gold fish (2.5 ± 0.05) juveniles were randomly distributed in 12 glass aquariums (400-L; 25 fish per aquaria) and fed experimental diets contain different levels of L. acidophilus (0, 1.5 × 10(8), 3 × 10(8) and 6 × 10(8)) for 8 weeks...
October 18, 2016: Fish & Shellfish Immunology
Seyed Hossein Hoseinifar, Fazel Zoheiri, Carlo C Lazado
Immunostimulation through the use of sustainable and eco-friendly dietary additives is one of the current prophylactic strategies in fish husbandry. Plant-based immunostimulants are highly considered for this intent, both for their scientific and practical advantages. Persian hogweed (Heracleum persicum) is a flower-bearing herb that possesses interesting pharmacological importance due to its bioactive compounds. It is commonly used as a spice, food additive, dietary supplement and traditional remedy. The present study evaluated the potential of H...
October 14, 2016: Fish & Shellfish Immunology
Chinh Dang Van, Galayanee Doungchawee, Sutas Suttiprapa, Yuji Arimatsu, Sasithorn Kaewkes, Banchob Sripa
Opisthorchiasis caused by Opisthorchis viverrini is an important foodborne trematodiasis in Thailand, Laos and Cambodia. Interestingly, the opisthorchiasis endemic region overlaps with an area of leptospirosis emergence. Here we report an association between opisthorchiasis and leptospirosis in Thailand. Of 280 sera collected from villagers living around the Lawa wetland complex in Khon Kaen province, 199 (71%) were seropositive for leptospirosis by immunochromatography. Individuals with O. viverrini infection had a significantly higher rate of leptospirosis than those without (P=0...
October 13, 2016: Parasitology International
Hongye Jiang, Tingjin Chen, Hengchang Sun, Zeli Tang, Jinyun Yu, Zhipeng Lin, Pengli Ren, Xinyi Zhou, Yan Huang, Xuerong Li, Xinbing Yu
Clonorchiasis, caused by the consumption of raw or undercooked freshwater fish containing infective metacercariae of Clonorchis sinensisis (C.sinensis), remains a common public health problem. New effective prevention strategies are still urgent to control this food-borne infectious disease. The previous studies suggested Bacillus subtilis (B. subtilis) spores was an ideal vaccines delivery system, and the C.sinensis enolase (CsENO) was a potential vaccine candidate against clonorchiasis. In the current study, we detected CsENO-specific IgM levels by ELISA in sera, intestinal mucus and skin mucus in grass carps (Ctenopharyngodon idella) through oral administration with B...
October 8, 2016: Fish & Shellfish Immunology
Caili Zhang, Suqin Zhu, Haohao Wu, Abdul-Nabi Jatt, Yurong Pan, Mingyong Zeng
Fish skin has both positive and negative effects on the shelf-life of the fish. This study aimed to investigate the spoilage process of the skin and flesh of refrigerated farmed turbot (Scophthalmus maximus) with vacuum packaging. Microbial community changes were analyzed by combining culture-dependent and culture-independent methods. The results indicated that the shelf-life of vacuum-packaged refrigerated turbot was 16 d; skin mucus was the interference factor of turbot quality. The culture-dependent analysis demonstrated that the total viable counts and the population of H2 S-producing bacteria, Pseudomonas spp...
October 3, 2016: Journal of Food Science
Héctor Cordero, Alberto Cuesta, José Meseguer, M Ángeles Esteban
Skin mucus is increasingly used as a source for determining immunity-related proteins and enzymes. However, the ability to accurately measure some activities may be modified by inadequate handling and storage of the samples. This study aims to measure the effect of freezing and lyophilization at the time of collection on such activities. Fresh, frozen (immediately after collection at -20 °C and -80 °C) and lyophilized skin mucus samples obtained from the same groups of fish specimens of gilthead seabream (Sparus aurata L...
September 30, 2016: Fish & Shellfish Immunology
Swagatha Ghosh, Chi-Li Yu, Daniel J Ferraro, Sai Sudha, Samir Kumar Pal, Wayne F Schaefer, David T Gibson, S Ramaswamy
The walleye (Sander vitreus) is a golden yellow fish that inhabits the Northern American lakes. The recent sightings of the blue walleye and the correlation of its sighting to possible increased UV radiation have been proposed earlier. The underlying molecular basis of its adaptation to increased UV radiation is the presence of a protein (Sandercyanin)-ligand complex in the mucus of walleyes. Degradation of heme by UV radiation results in the formation of Biliverdin IXα (BLA), the chromophore bound to Sandercyanin...
October 11, 2016: Proceedings of the National Academy of Sciences of the United States of America
Hassan Khodadadian Zou, Seyed Hossein Hoseinifar, Hamed Kolangi Miandare, Abdolmajid Hajimoradloo
The aim of the present study was to investigate immunomodulatory effects of Agaricus bisporus, white bottom mushroom powder (WBMP) on common carp (Cyprinus carpio) fingerlings. Carps were fed on different levels of WBMP (0, 0.5, 1 and 2%) for 8 weeks and at the end of feeding trial, skin mucus immune parameters (total Ig, lysozyme and protease activity), cytokines gene expression (TNF-alpha, IL1b, IL8) in intestine as well as serum non-specific immune parameters (total Ig, lysozyme and ACH50) were measured...
September 24, 2016: Fish & Shellfish Immunology
Jean A Hall, Jaye Hartman, Monica M Skinner, Adam R Schwindt, Kay A Fischer, William R Vorachek, Gerd Bobe, Beth A Valentine
The prevalence of asthma has increased in recent decades, which may be related to higher dietary intake of (n-6) polyunsaturated fatty acids (PUFA) and lower intake of (n-3) PUFA, e.g., those contained in fish oil. The objective of this study was to determine if dietary PUFA enrichment decreases mucus production or the inflammatory response associated with ovalbumin (OVA)-induced allergic lung inflammation. Mice (n = 10/group) were fed control, 20% fish oil, or 20% corn oil enriched diets for a total of 12 weeks...
2016: PloS One
Anjan Mukherjee, Dipanjan Dutta, Sudeshna Banerjee, Einar Ringø, Eva Marie Breines, Ellinor Hareide, Goutam Chandra, Koushik Ghosh
The study explored antagonistic activity of the cellular components of potential probiotic bacteria from mrigal (Cirrhinus mrigala) against fish pathogens with a basic insight of the chemical nature of the antagonistic compound. Totally 208 autochthonous gut bacteria were isolated, of which 22 strains revealed antagonism towards ≥2 of the six common fish pathogens. Zones of inhibition (halo diameter) were presented as score and the four most promising strains were selected as putative probiotics based on the cumulative score assigned...
October 2016: Research in Veterinary Science
Kathiresan Purushothaman, Doreen Lau, Jolly M Saju, Syed Musthaq Sk, Declan Patrick Lunny, Shubha Vij, László Orbán
Asian seabass (Lates calcarifer) is a food fish of increasing aquaculture importance. In order to improve our understanding on the digestive system and feeding of this species, morphological and histological features of the gut were studied. Morphologically, the Asian seabass gut is defined by a short and muscular esophagus, well-developed stomach and comparatively short intestine. Mucous secreting goblet cells reactive to PAS (Periodic Acid Schiff) and AB (Alcian Blue) stain were present throughout the esophagus...
2016: PeerJ
Farman Ullah Dawar, Jiagang Tu, Yang Xiong, Jiangfeng Lan, Xing Xing Dong, Xiaoling Liu, Muhammad Nasir Khan Khattak, Jie Mei, Li Lin
Fish skin mucus is a dynamic barrier for invading pathogens with a variety of anti-microbial enzymes, including cyclophilin A (CypA), a multi-functional protein with peptidyl-prolyl cis/trans isomerase (PPIase) activity. Beside various other immunological functions, CypA induces leucocytes migration in vitro in teleost. In the current study, we have discovered several novel immune-relevant proteins in yellow catfish skin mucus by mass spectrometry (MS). The CypA present among them was further detected by Western blot...
2016: International Journal of Molecular Sciences
Venkatachalam Sukumaran, Se Chang Park, Sib Sankar Giri
This study evaluated the effects of ginger (Zingiber officinale) as a feeding supplement on the growth, skin mucus immune parameters, and cytokine-related gene expression of Labeo rohita, and its susceptibility to Aeromonas hydrophila infection. Diets containing six different concentrations of dried ginger (0% [basal diet], 0.2% [G2], 0.4% [G4], 0.6% [G6], 0.8% [G8], and 1.0% [G10] were fed to fish (average weight: 12.3 g) for 60 days. Growth parameters were examined at 30 and 60 days post-feeding. Skin mucosal immune responses and gene expression were examined 60 days post-feeding...
October 2016: Fish & Shellfish Immunology
Louise von Gersdorff Jørgensen
Ichthyophthirius multifiliis, causing white spot disease, is a serious pathogen in aquaculture as well as for the ornamental fish industry. In carp, channel catfish and rainbow trout the immune responses against the parasite have been partly elucidated and these species are able to acquire a high level of immunity against the disease. Zebrafish are however, known to be more resilient towards the disease than channel catfish but the pathology and the ability to obtain protection is unknown. In this study a primary infection in the gills of zebrafish was described and the subsequent acquirement of immunity was evaluated...
October 2016: Fish & Shellfish Immunology
Ivana Papežíková, Jan Mareš, Libor Vojtek, Pavel Hyršl, Zdeňka Marková, Andrea Šimková, Jana Bartoňková, Stanislav Navrátil, Miroslava Palíková
Despite the high number of studies concerning seasonality of immune response in fish, information for some fish species is still scarce. Here, we assess seasonal changes in leukocyte counts and several immune parameters in three groups of farmed salmonids, i.e. brook trout (Salvelinus fontinalis), brook trout x Arctic charr hybrids (Salvelinus fontinalis x Salvelinus alpinus alpinus) and rainbow trout (Oncorhynchus mykiss) reared under the same conditions and fed with the same feed. Fish were sampled in five periods of the year (late April, early July, late August, early November and early February) and leukocyte counts, respiratory burst of blood phagocytes, lysozyme concentration in skin mucus and total complement activity were measured...
October 2016: Fish & Shellfish Immunology
Imtiyaz Qayoom, Feroz A Shah, Malik Mukhtar, Masood H Balkhi, Farooz A Bhat, Bilal A Bhat
The present study was designed to investigate acute toxicity of dimethoate on juvenile Cyprinus carpio var. communis. Fishes weighing 10 ± 2 gms were selected and mortality data was statistically evaluated by Finney's Probit Method. The 96-hour LC50 value for Cyprinus carpio was found as 1.1 ppm in static bioassay system. Mean values of physicochemical parameters of aquarium waters determined during bioassay depicted slight variation indicating that the mortality in aquarium fishes occurred due to pesticide exposure and not suffocation...
2016: TheScientificWorldJournal
Kainã R C Fagundes, Matheus M Rotundo, Renata B Mari
Morphological analysis of the digestive tract of Sphoeroides testudineus showed an esophagus with an anterior and a posterior portion, the abdominal pouch. No stomach was observed between the abdominal pouch and the intestine. The intestine was arranged in three segments and two loops, and the distal portion had the rectum opening into the anus. Histochemical analyses showed that the esophagus secreted acid mucosecretions, and that there was a qualitative increase in goblet cells from the proximal to distal area of the intestine...
August 18, 2016: Anais da Academia Brasileira de Ciências
Lijie Tang, Haiyan Kang, Kexin Duan, Mengting Guo, Gaihong Lian, Yang Wu, Yijing Li, Shuai Gao, Yanping Jiang, Jiyuan Yin, Min Liu
Infectious hematopoietic necrosis virus (IHNV) infects salmonid fish, resulting in high mortality and serious economic losses to salmonid aquaculture. Therefore, an effective IHNV vaccine is urgently needed. To select an inactivation agent for the preparation of an effective IHNV vaccine, rainbow trout were immunized with mineral oil emulsions of IHNV vaccines inactivated by formaldehyde, binary ethylenimine (BEI), or β-propiolactone (BPL). The fish were challenged 8 weeks after vaccination, and their IgM antibody response and relative percent survival (RPS) were evaluated...
September 2016: Viral Immunology
Mahmoud A O Dawood, Shunsuke Koshio, Manabu Ishikawa, Mabrouk El-Sabagh, Saichiro Yokoyama, Wei-Long Wang, Zhang Yukun, Adissin Olivier
Environmental stressors caused by inadequate aquaculture management strategies suppress the immune response of fish and make them more susceptible to diseases. Therefore, efforts have been made to relieve stress in fish by using various functional feed additives in the diet, including probiotics. The present work evaluates the effects of Lactobacillus rhamnosus (LR) on physiological stress response, blood chemistry and mucus secretion of red sea bream (Pagrus major) under low salinity stress. Fish were fed four diets supplemented with LR at [0 (LR0), 1 × 10(2) (LR1), 1 × 10(4) (LR2) and 1 × 10(6) (LR3) cells g(-1)] for 56 days...
August 19, 2016: Fish Physiology and Biochemistry
François-Étienne Sylvain, Bachar Cheaib, Martin Llewellyn, Tiago Gabriel Correia, Daniel Barros Fagundes, Adalberto Luis Val, Nicolas Derome
Aquatic organisms are increasingly exposed to lowering of environmental pH due to anthropogenic pressure (e.g. acid rain, acid mine drainages). Such acute variations trigger imbalance of fish-associated microbiota, which in turn favour opportunistic diseases. We used the tambaqui (Colossoma macropomum), an Amazonian fish tolerant to significant pH variation in its natural environment, to assess the response of fish endogenous microbiota to acute short-term acid stress. We exposed 36 specimens of tambaquis to acidic water (pH 4...
2016: Scientific Reports
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