Influence of pH upon the activity of glycosidases and proteinases of intestinal mucosa, chyme and microbiota in fish.

abstract：:Transferrin mRNA in liver was quantified in farmed Atlantic salmon (Salmo salar) fed three different levels (310-, 65-, and 40 ppm) of dietary iron for 26 weeks. At the time of sampling, the fish fed 40 ppm iron showed symptoms of iron deficiency. Mean values of liver storage iron was reduced from 84 to 12 mg kg(-1) a...

journal_title：Fish physiology and biochemistry

authors： Kvingedal AM,Dehli A,Rørvik KA

更新日期：1996-08-01 00:00:00

abstract：:Serum thyroid hormone concentrations were measured during the seven stages of metamorphosis (1-7) of the southern hemisphere lamprey, Geotria australis. The respective mean concentrations ± SEM of serum thyroxine (T4) and triiodothyronine (T3) fell from 31.73 ± 4.09 and 5.06 ± 0.70 nM in large ammocoetes sampled in Fe...

journal_title：Fish physiology and biochemistry

authors： Leatherland JF,Hilliard RW,Macey DJ,Potter IC

更新日期：1990-03-01 00:00:00

abstract：:Biological organisms are constantly challenged by xenobiotics and have evolved mechanisms to reduce, neutralize, or repair toxic outcomes. The various chemical defenses all utilize energy, but their specific costs and impacts on energy budgets are currently unknown. In this study, the energetic costs associated with t...

journal_title：Fish physiology and biochemistry

authors： Kennedy CJ

更新日期：2021-01-06 00:00:00

abstract：:Gilthead sea bream larvae (Sparus aurata) aged 47 days post hatching (dph) (11.6-12.8 mg in wet weight) were exposed to several sublethal concentrations of Cd(2+) (0.1, 5 and 10 mg/L) during 6 days in order to investigate the effects of this heavy metal on the expression of selected genes involved in detoxification (m...

journal_title：Fish physiology and biochemistry

authors： Sassi A,Darias MJ,Said K,Messaoudi I,Gisbert E

更新日期：2013-06-01 00:00:00

abstract：:In this study, the mechanism that VC inhibits lipid deposition through GSK-3β/mTOR signaling was investigated in the liver of Danio rerio. The results indicated that 0.5- and 1.0-g/kg VC treatments activated mTOR signaling by inhibiting GSK-3β expression. The mRNA expression of FAS, ACC, and ACL, as well as the conten...

journal_title：Fish physiology and biochemistry

authors： Liu D,Gu Y,Pang Q,Han Q,Li A,Wu W,Zhang X,Shi Q,Zhu L,Yu H,Zhang Q

更新日期：2020-02-01 00:00:00

abstract：:Feeding experiments and laboratory analyses were conducted to establish the essential fatty acid (EFA) requirement of red drum (Sciaenops ocellatus). Juvenile red drum were maintained in aquaria containing brackish water (5 ± 2‰ total dissolved solids) for two 6-week experiments. Semipurified diets contained a total o...

journal_title：Fish physiology and biochemistry

authors： Lochmann RT,Gatlin DM 3rd

更新日期：1993-10-01 00:00:00

abstract：:The rate of oxygen consumption of minced whole body was determined volumetrically, as an indication of metabolic rate in vitro (M in vitro ), at 20°C in porgy Pagrus major ranging from 0.0002 g (just after hatch) to 2.9 g (67 days old) in body mass. A triphasic relationship was found between M in vitro of individual f...

journal_title：Fish physiology and biochemistry

authors： Oikawa S,Itazawa Y

更新日期：1992-10-01 00:00:00

abstract：:Histological development of the digestive tract and specific activities of three digestive enzymes (trypsin, alkaline phosphatase, and pepsin) were studied in rock bream Oplegnathus fasciatus from hatching to 50 days after hatching (DAH). At hatching, the digestive tract appeared as an undifferentiated straight tube a...

journal_title：Fish physiology and biochemistry

authors： He T,Xiao Z,Liu Q,Ma D,Xu S,Xiao Y,Li J

更新日期：2012-04-01 00:00:00

abstract：:Cytochrome P450 aromatase, which is encoded by the CYP19a gene, converts androgens to estradiol. Considerable evidence suggests that estrogens play an important role in fish reproductive process. Therefore CYP19a is an excellent candidate gene for reproductive traits. Variants in the promoter of the CYP19a gene might ...

journal_title：Fish physiology and biochemistry

authors： He F,Wen HS,Dong SL,Shi B,Chen CF,Wang LS,Yao J,Mu XJ,Zhou YG

更新日期：2009-08-01 00:00:00

abstract：:Spermiation and changes in androgen (testosterone, T and 11-ketotestosterone, 11-KT) levels were studied in sterlet (Acipenser ruthenus) treated with GnRH agonist implants (DAla(6)-Pro(9)-LHRHa) at 25 and 75 μg kg(-1) b.w. and compared with those males treated with 4 mg kg(-1) b.w. of carp pituitary extract (CPE) and ...

journal_title：Fish physiology and biochemistry

authors： Alavi SMH,Hatef A,Mylonas CC,Gela D,Papadaki M,Rodina M,Kašpar V,Pšenička M,Podhorec P,Linhart O

更新日期：2012-12-01 00:00:00

abstract：:The present study aimed to assess the sewage effects of the Brazilian Antarctic Station Comandante Ferraz, Admiralty Bay, King George Island, on the hepatic metabolism (energetic, antioxidant, and arginase levels) and levels of plasma constituents of two Antarctic fish species Notothenia rossii and N. coriiceps. The b...

journal_title：Fish physiology and biochemistry

authors： Rodrigues E Jr,Feijó-Oliveira M,Suda CN,Vani GS,Donatti L,Rodrigues E,Lavrado HP

更新日期：2015-10-01 00:00:00

abstract：:Juvenile sea bass, 1.5 years old, of mixed sex, held on long photoperiods were fed early on the photoperiod and late on the photoperiod, using different diets. Fish fed natural diets showed a daily rhythmicity of plasma insulin, liver c-AMP, plasma glucose, liver glycogen and muscle glycogen content, however, fish fed...

journal_title：Fish physiology and biochemistry

authors： Perez J,Zanuy S,Carrillo M

更新日期：1988-10-01 00:00:00

abstract：:To investigate the effect of water temperature on gamete maturation and gamete quality, European grayling (Thymalus thymallus) were held under different temperature regimes prior to spawning. Maturation of males and females and their gamete quality depended strongly on temperature regime. The highest percentages of ma...

journal_title：Fish physiology and biochemistry

authors： Lahnsteiner F,Kletzl M

更新日期：2012-04-01 00:00:00

abstract：:This paper presents a comparative study of the roles of Cl- and HCO3- in the functioning of the GABAAR-associated Cl-/HCO3--ATPase of the plasma membranes of the olfactory sensory neurons (OSNs) and mature brain neurons (MBNs) of fish. The ATPase activity of OSNs and its dephosphorylation were increased twofold by Cl-...

journal_title：Fish physiology and biochemistry

authors： Menzikov S

更新日期：2018-04-01 00:00:00

abstract：:The composition of seminal plasma and metabolism of sperm of the cyprinid fishAlburnus alburnus were investigated. Statistically significant correlations were found between motility parameters and seminal fluid osmolality, pH, Na(+), K(+) and protein levels (negative correlations: % immotile spermatozoa-Na(+), K(+); p...

journal_title：Fish physiology and biochemistry

authors： Lahnsteiner F,Berger B,Weismann T,Patzner RA

更新日期：1996-04-01 00:00:00

abstract：:This review discusses the new biotechnological tools that are arising and promising for conservation and enhancement of fish production, mainly regarding the endangered and the most economically important species. Two main techniques, in particular, are available to avoid extinction of endangered fish species and to i...

journal_title：Fish physiology and biochemistry

authors： de Siqueira-Silva DH,Saito T,Dos Santos-Silva AP,da Silva Costa R,Psenicka M,Yasui GS

更新日期：2018-12-01 00:00:00

abstract：: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 eval...

journal_title：Fish physiology and biochemistry

authors： Dawood MA,Koshio S,Ishikawa M,El-Sabagh M,Yokoyama S,Wang WL,Yukun Z,Olivier A

更新日期：2017-02-01 00:00:00

abstract：:In this study we assessed the influence of three different environmental salinities (5, 15 and 31 psu during 90 days) on growth, osmoregulation, energy metabolism and digestive capacity in juveniles of the Notothenioid fish Eleginops maclovinus. At the end of experimental time samples of plasma, liver, gill, intestine...

journal_title：Fish physiology and biochemistry

authors： Vargas-Chacoff L,Saavedra E,Oyarzún R,Martínez-Montaño E,Pontigo JP,Yáñez A,Ruiz-Jarabo I,Mancera JM,Ortiz E,Bertrán C

更新日期：2015-12-01 00:00:00

abstract：:A completely randomized experimental design carried out to investigate the effects of different levels of Pediococcus acidilactici (PA) including 0 (basal diet as a control diet), 1 × 106, 2 × 106, 4 × 106, and 8 × 106 colony-forming unit (CFU) per gram of the diet for 60 days on the mucosal immunity responses, growth...

journal_title：Fish physiology and biochemistry

authors： Arani MM,Salati AP,Keyvanshokooh S,Safari O

更新日期：2020-11-26 00:00:00

abstract：:The aims of the present study are to determine whether triiodothyronine (T3) and/or thyroxine (T4) in tilapia larvae is gifted through the mother, and to investigate the change profiles of thyrotropin (TSH), thyroid follicular cells and type I deiodinase (D1) gene expression following larval development. T3 and T4 con...

journal_title：Fish physiology and biochemistry

authors： Hsu CW,Tsai SC,Shen SC,Wu SM

更新日期：2014-10-01 00:00:00

abstract：:Development of the digestive tract and accessory glands of larvae of the fat snook Centropomus parallelus was examined under light microscopy, from hatching to 60 day post-hatching (dph). At hatching, the digestive tract is straight and composed by a cubic cell layer. The exogenous feeding starts at 3 dph, concomitant...

journal_title：Fish physiology and biochemistry

authors： Teles A,Costa WM,Ammar D,Müller YM,Nazari EM,Cerqueira VR

更新日期：2015-04-01 00:00:00

abstract：:This study describes the digestible protein (DP) and digestible energy (DE) utilization in juvenile mulloway, and determined the requirements for maintenance. This was achieved by feeding triplicate groups of fish weighing 40 or 129 g held at two temperatures (20 or 26 degrees C), on a commercial diet (21.4 g DP mJ DE...

journal_title：Fish physiology and biochemistry

authors： Pirozzi I,Booth MA,Allan GL

更新日期：2010-03-01 00:00:00

abstract：:The regulation of the interrenal of teleostean fishes is reviewed from the perspective of non-classical control mechanisms and new evidence is presented suggesting gonadotropic control of the interrenal. Cortisol secretion by the interrenal, in addition to regulation by ACTH, appears to be mediated by other hormones. ...

journal_title：Fish physiology and biochemistry

authors： Schreck CB,Bradford CS,Fitzpatrick MS,Patiño R

更新日期：1989-06-01 00:00:00

abstract：:CDK-2, a member of the cyclin-dependent kinase family, plays an important role in many cell processes, such as cell cycle regulation, cell growth and differentiation, and cell apoptosis. Lampreys belong to the most primitive vertebrates, and there is no report about the CDK-2 gene in lampreys at present. In this study...

journal_title：Fish physiology and biochemistry

authors： Xu Y,Tian Y,Zhao H,Zheng N,Ren K,Li Q

更新日期：2019-12-01 00:00:00

abstract：:An ovarian cell line was successfully developed from the juvenile ovary of Southern catfish (SCO1) (Silurus meridionalis), which was designated as SCO1. The cell line multiplied preferentially in L-15 medium with 15 % fetal bovine serum at 28 °C for more than 70 passages over a period of 420 days. SCO1 showed fibrobla...

journal_title：Fish physiology and biochemistry

authors： Wei J,Qi W,Zhou Y,Zhang X,Dong R,Zhou L,Wang D

更新日期：2014-10-01 00:00:00

abstract：:The dmrt (doublesex and mab-3 related transcription factor) gene family comprises several transcription factors that share a conserved DM domain. Dmrt1 is considered to be involved in sexual development, but the precise function of other family members is unclear. In this study, we isolated genomic DNA and cDNA sequen...

journal_title：Fish physiology and biochemistry

authors： Wen A,You F,Tan X,Sun P,Ni J,Zhang Y,Xu D,Wu Z,Xu Y,Zhang P

更新日期：2009-08-01 00:00:00

abstract：:Two-dimensional gel electrophoresis (2-DE), matrix-assisted laser desorption/ionization tandem time-of-flight (MALDI-TOF/TOF) mass spectrometry, and database searching were used to analyze the effects of triploidization heat shock treatment on protein expression in rainbow trout eyed embryo and fry. After fertilizatio...

journal_title：Fish physiology and biochemistry

authors： Babaheydari SB,Keyvanshokooh S,Dorafshan S,Johari SA

更新日期：2017-04-01 00:00:00

abstract：:Iron overload increases the risk of osteoporosis, which leads to an increase in the incidences of bone fracture after menopause. In vitro studies have demonstrated that excess iron can inhibit osteoblast activity. Hepcidin, a central regulator of iron homeostasis, prevents iron overload, and thus, it is considered to ...

journal_title：Fish physiology and biochemistry

authors： Jiang Y,Chen B,Yan Y,Zhu GX

更新日期：2019-02-01 00:00:00

abstract：:A 90-day randomized feeding experiment was performed to assess the effects of dietary cobalt (Co) supplementation on the growth performance, muscle composition, status of iron and manganese in the muscle as well as the expression of growth-related genes in the muscle (myoblast determination protein 1 homolog (MyoD) an...

journal_title：Fish physiology and biochemistry

authors： Younus N,Zuberi A,Rashidpour A,Metón I

更新日期：2020-02-01 00:00:00

abstract：:Although there are almost thirty-thousand species of fish living in a great variety of habitats and utilizing vast reproductive strategies, our knowledge of morphofunctional and quantitative aspects of testis structure and spermatogenesis is still incipient for this group of vertebrates. In this review, we discuss asp...

journal_title：Fish physiology and biochemistry

authors： Nóbrega RH,Batlouni SR,França LR

更新日期：2009-03-01 00:00:00