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Fish Physiology and Biochemistry

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https://www.readbyqxmd.com/read/28741124/characterization-of-a-low-density-lipoprotein-receptor-lrp13-in-chinese-tongue-sole-cynoglossus-semilaevis-and-medaka-oryzias-latipes
#1
Na Wang, Ruoqing Wang, Qiaomu Hu, Wenteng Xu, Ying Zhu, Fang Yan, Songlin Chen
As an important economic marine species cultured in China, Chinese tongue sole (Cynoglossus semilaevis) has interested us due to its sexual dimorphism and ZW/ZZ sex determination system. In a previous study, dmrt1 was identified as a dosage-dependent male-determining gene. In the present study, a female-specific expressed gene, cse0440, initially annotated as lrp1b-like, was identified from chromosome W of C. semilaevis. In view of the differences between cse0440 and lrp1b in terms of expression pattern, a phylogenetic analysis containing 85 LRP proteins was constructed and provided an evidence to re-annotate cse0440 as cseLRP13...
July 24, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28733713/diel-cyclic-hypoxia-alters-plasma-lipid-dynamics-and-impairs-reproduction-in-goldfish-carassius-auratus
#2
Aritra Bera, Paramita Banerjee Sawant, Subrata Dasgupta, N K Chadha, Bhawesh T Sawant, Asim Kumar Pal
Diel cyclic hypoxia occurs with varying frequency and duration in freshwater habitats, yet little is known about its effects on reproduction of freshwater fishes. The present study shows that long-term exposure of goldfish (Carassius auratus) to cyclic hypoxia (0.8 ± 0.2 mg/l dissolved oxygen) for 9 h or more, per day, altered plasma lipid and sex steroid profiles, which in turn directly or indirectly suppressed ovarian growth and viable spermatozoa production. Hypoxia decreased total cholesterol and high density lipoprotein (HDL p < 0...
July 21, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28733712/fertility-and-ploidy-of-gametes-of-allodiploid-and-allotriploid-loaches-produced-by-diploid-misgurnus-anguillicaudatus-females-and-paramisgurnus-dabryanus-males
#3
Songqian Huang, Xiaojuan Cao, Weimin Wang, Mona Nasr
Artificial and natural hybridization of dojo loach Misgurnus anguillicaudatus (2N = 50, DD for short) and large-scale loach Paramisgurnus dabryanus (2N = 48, PP for short) are well-grown. However, these hybrid loaches have not yet been examined for fertility and ploidy of gametes. Here, histological observations, artificial propagation, observations of embryonic development, larval morphology, and ploidy analyses were conducted to determine the fertility and ploidy of gametes of allodiploid (DP for short) and allotriploid (DDP for short) loaches, produced by DD females × PP males and induced from fertilized eggs of DD females × PP males by cold shock to prevent the second polar body release, respectively...
July 21, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28730461/low-salinity-affects-cellularity-dna-methylation-and-mrna-expression-of-igf1-in-the-liver-of-half-smooth-tongue-sole-cynoglossus-semilaevis
#4
Siping Li, Feng He, Haishen Wen, Jifang Li, Yufeng Si, Mingyuan Liu, Yajuan Huang, Lingcai Meng
Animal growth depends on feedback regulation of hormone levels and environmental conditions. Insulin-like growth factor-1 (Igf1) promotes cell growth and differentiation and represses apoptosis and is highly regulated by the environment. Moreover, animals modify physiological homeostasis under stressful conditions through epigenetics and genetic regulatory mechanisms. Therefore, a comprehensive understanding of the effects of salt on fish growth is needed. In this study, half smooth tongue sole (Cynoglossus semilaevis) were subjected to 15‰ salinity for 0, 7, and 60 days (D) to assess the effects of low salinity on liver cellularity and growth...
July 21, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28726029/ammonia-exposure-and-subsequent-recovery-trigger-oxidative-stress-responses-in-juveniles-of-brazilian-flounder-paralichthys-orbignyanus
#5
Lucas Campos Maltez, Giovanna Rodrigues Stringhetta, Alain Danilo Enamorado, Marcelo Hideo Okamoto, Luis Alberto Romano, José María Monserrat, Luís André Sampaio, Luciano Garcia
The effects of ammonia exposure and recovery on oxidative stress parameters and histology of juvenile Brazilian flounder Paralichthys orbignyanus were evaluated. The fish were exposed to 0.12, 0.28 and 0.57 mg NH3-N L(-1), plus a control, for 10 days followed by the same recovery time in ammonia-free water. Gill, liver and muscle samples (n = 9) were collected after 1, 5 and 10 days of exposure and after recovery for oxidative stress analysis (antioxidant capacity against peroxyl radicals (ACAP); glutathione S-transferase (GST) activity; lipoperoxidation levels measured through thiobarbituric acid reactive substances (TBARS) content)...
July 19, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28721487/influence-of-light-intensity-and-spectral-composition-of-artificial-light-at-night-on-melatonin-rhythm-and-mrna-expression-of-gonadotropins-in-roach-rutilus-rutilus
#6
Anika Brüning, Franz Hölker, Steffen Franke, Wibke Kleiner, Werner Kloas
In this study we investigated the influence of artificial light at night (ALAN) of different intensities (0, 1, 10, 100 lx) and different colours (blue, green, red) on the daily melatonin rhythm and mRNA expression of gonadotropins in roach Rutilus rutilus, a ubiquitous cyprinid, which occur in standing and moderately flowing freshwater habitats of central Europe. Melatonin concentrations were significantly lowered under nocturnal white light already at 1 lx. Low intensity blue, green and red ALAN lowered the melatonin levels significantly in comparison to a dark control...
July 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28721486/modulatory-effect-of-lycopene-against-carbofuran-toxicity-in-african-catfish-clarias-gariepinus
#7
Heba S Hamed, Alaa G M Osman
In the current study, African catfish, Clarias gariepinus, was exposed to a sublethal concentration of carbofuran (CF) to investigate its negative effects on biochemical and oxidative stress biomarkers. Also, the putative role of lycopene (LYC) administration in alleviating these negative effects was evaluated. Fish were divided into six groups in triplicates as follows: group I was without treatment, group II was orally administered corn oil, group III was orally administered 18 mg LYC/kg body weight, group IV was exposed to 0...
July 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28712005/an-overview-of-the-ongoing-insights-in-selenium-research-and-its-role-in-fish-nutrition-and-fish-health
#8
REVIEW
Kifayat Ullah Khan, Amina Zuberi, João Batista Kochenborger Fernandes, Imdad Ullah, Huda Sarwar
In the present review, the ongoing researches about selenium research in fish nutrition have been comprehensively discussed. Selenium research is getting popularity in fish nutrition as it is required for the normal growth and proper physiological and biochemical functions in fish. Its deficiency or surplus amounts create severe problems in fish. It is available as inorganic form, organic form, and nano form. In fish, most of the previous research is about the selenium requirements for fish by using only one selenium source mainly the inorganic one...
July 15, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28698966/two-skin-cell-lines-from-wild-type-and-albino-japanese-flounder-paralichthys-olivaceus-establishment-characterization-virus-susceptibility-efficient-transfection-and-application-to-albinism-study
#9
Ruoqing Wang, Nianwei Zhang, Renkai Wang, Shengpeng Wang, Na Wang
In order to provide an applicable cell platform to study fish pathology and skin pigmentation, two cell lines derived from skin tissues of wild-type and albino Japanese flounder were established and named JFSK_wt and JFSK_alb, respectively. These two cell lines were cultured for 45 passages within approximately 300 days. JFSK_wt and JFSK_alb cells were maintained in Dulbecco's Modified Eagle's Medium and Ham's F-12 Nutrient Mixture (DMEM/F12) supplemented with antibiotics, fetal bovine serum (FBS), 2-mercaptoethanol (2-Me), N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid (HEPES), and basic fibroblast growth factor (bFGF)...
July 11, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28695381/development-of-a-method-to-assess-the-ichthyotoxicity-of-the-harmful-marine-microalgae-karenia-spp-using-gill-cell-cultures-from-red-sea-bream-pagrus-major
#10
Nobuyuki Ohkubo, Yuji Tomaru, Haruo Yamaguchi, Saho Kitatsuji, Kazuhiko Mochida
The present study reports the development of a method to investigate ichthyotoxicity of harmful marine microalgae using cultured red sea bream (Pagrus major) gill cells. The cultured gill cells formed adherent 1-2 layers on the bottom of the culture plate and could tolerate seawater exposure for 4 h without significant alteration in cell survival. The microalgae Karenia mikimotoi, Karenia papilionacea, K. papilionacea phylotype-I, and Heterosigma akashiwo were cultured, then directly exposed to gill cells...
July 11, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28689359/immunotoxic-responses-of-chronic-exposure-to-cypermethrin-in-common-carp
#11
Siyavash Soltanian, Mohammad Saeed Fereidouni
In the current study, laboratory evaluations were made to assess the immunomodulatory effect of cypermethrin on fingerlings of common carp (Cyprinus carpio L.). Results showed that 96-h LC50 of cypermethrin in common carp was estimated at 0.85 μg/L. Fish were exposed for 21 days to cypermethrin at three sub-lethal concentrations of 0.042, 0.085, and 0.17 μg/L that represented 5, 10, and 20%, respectively, of the 96-h LC50 of the pesticide for this fish species. Blood samples were taken after 7, 14, and 21 days of exposure...
July 8, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28681206/protective-effect-of-ganoderma-lucidum-polysaccharide-against-carbon-tetrachloride-induced-hepatic-damage-in-precision-cut-carp-liver-slices
#12
Yingjuan Liu, Chunyun Zhang, Jinliang Du, Rui Jia, Liping Cao, Galina Jeney, Hiroki Teraoka, Pao Xu, Guojun Yin
The aim of the present study was to investigate the protective effects of Ganoderma lucidum polysaccharide (GLPS) against carbon tetrachloride (CCl4)-induced hepatotoxicity in vitro in common carp. Precision-cut liver slices (PCLSs), which closely resemble the organ from which they are derived, were employed as an in vitro model system. GLPS (0.1, 0.3, and 0.6 mg/ml) was added to PCLS culture system before the exposure to 12 mM CCl4. The supernatants and slices were collected to detect molecular and biochemical responses to CCl4 and PCLS treatments...
July 5, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28681205/dietary-substitution-of-fishmeal-by-alternative-protein-with-guanosine-monophosphate-supplementation-influences-growth-digestibility-blood-chemistry-profile-immunity-and-stress-resistance-of-red-sea-bream-pagrus-major
#13
Md Sakhawat Hossain, Shunsuke Koshio
We determined the effects of complete fishmeal (FM) replacement by alternative protein (soy protein concentrate, SPC) with guanosine monophosphate (GMP) supplementation on growth, digestibility, immunity, blood chemistry profile, and stress resistance of juvenile red sea bream, Pagrus major. FM protein of a FM-based control diet (FM0) was replaced with 33.3 (FM33.3), 66.6 (FM66.7), and 100% (FM100) by SPC protein, and each replacement group was supplemented with 0.4% GMP to formulate four experimental diets...
July 5, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28676950/comparative-transcriptome-analysis-of-molecular-mechanism-underlying-gray-to-red-body-color-formation-in-red-crucian-carp-carassius-auratus-red-var
#14
Yongqin Zhang, Jinhui Liu, Liangyue Peng, Li Ren, Huiqin Zhang, Lijun Zou, Wenbin Liu, Yamei Xiao
Red crucian carp (Carassius auratus red var.) is an ornamental fish with vivid red/orange color. It has been found that the adult body color of this strain forms a gray-to-red change. In this study, skin transcriptomes of red crucian carp are first obtained for three different stages of body color development, named by gray-color (GC), color-variation (CV), and red-color (RC) stages, respectively. From the skins of GC, CV, and RC, 103,229; 108,208; and 120,184 transcripts have been identified, respectively...
July 5, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28676949/effect-of-the-squid-viscera-hydrolysate-on-growth-performance-and-digestion-in-the-red-sea-bream-pagrus-major
#15
Fumitaka Kondo, Takashi Ohta, Toshiharu Iwai, Atsushi Ido, Chiemi Miura, Takeshi Miura
The improvement in feed efficiency is one of the most important subjects in fish culture. The development of feed, in terms of good intake, high growth performance, and high feed efficiency is needed. Squid viscera are one of the candidates for alternative material in improving feed efficiency in fish culture. In the present study, we described the dietary effect of the squid viscera hydrolysate (SVH) on the growth performance of the red sea bream. The addition of SVH to feed caused significant increases in feed intake, fork length, and body weight and produced a marked improvement in feed conversion after 4 weeks of feeding...
July 4, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28664291/histological-study-of-the-gastrointestinal-tract-in-longfin-yellowtail-seriola-rivoliana-larvae
#16
Andressa Teles, Joan Salas-Leiva, Carlos Alfonso Alvarez-González, Enric Gisbert, Leonardo Ibarra-Castro, Juan Carlos Pérez Urbiola, Dariel Tovar-Ramírez
This work contributes basic knowledge on larval development of Seriola rivoliana. A histological study describes the development of the digestive tract and accessory glands in S. rivoliana larvae reared under laboratory conditions at 24 °C from hatching to 30 days post-hatching (DPH). At hatching (2.6 ± 0.12 mm), larvae had an undifferentiated digestive tract with a closed straight tube and a large yolk sac with an oil globule. The liver and pancreas were observed at 1 and 2 days, and the mouth and anus opened at day 2...
June 29, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28647817/molecular-characterization-of-the-cd79a-and-cd79b-and-its-role-against-aeromonas-hydrophila-infection-in-chinese-sucker-myxocyprinus-asiaticus
#17
Huan Li, Yujin Li, Xiaoping Zhang, Yafeng Wang, Wufeng Zhang, Xia Wu, Zhijian Wang
CD79a and CD79b heterodimers are the important signaling components of B cell receptor (BCR) complex which plays a crucial role in B cell development and antibody production. In the present study, CD79a and CD79b homologues from Chinese sucker (Myxocyprinus asiaticus), namely MaCD79a and MaCD79b, were identified and their expression at early developmental stages and under constitutive and stimulated conditions were investigated. The cDNA sequences for MaCD79a and MaCD79b contained open reading frame of 678 and 636 bp in length for 225 and 211 amino acid residues, respectively...
June 25, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28646459/silymarin-inhibits-adipogenesis-in-the-adipocytes-in-grass-carp-ctenopharyngodon-idellus-in-vitro-and-in-vivo
#18
Peizhen Xiao, Zhou Yang, Jian Sun, Jingjing Tian, Zhiguang Chang, Xuexian Li, Baotong Zhang, Yuantu Ye, Hong Ji, Ermeng Yu, Jun Xie
In this study, two experiments were performed to explore the function of silymarin in adipogenesis in grass carp (Ctenopharyngodon idellus) using in vitro and in vivo models. In experiment 1, differentiated grass carp pre-adipocytes were treated with silymarin for 6 days. Treatment with 100 μg mL(-1)silymarin (SM100 group) significantly reduced triglyceride accumulation at day 6. The adipogenic gene expression levels of PPARγ, C/EBPα, SREBP1c, FAS, SCD1, and LPL, and the protein expression level of PPARγ were significantly down-regulated in the SM100 group...
June 23, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28589316/androgen-induced-pseudo-hermaphroditic-phenotypes-in-female-brevimyrus-niger-g%C3%A3-nther-1866-teleostei-mormyridae
#19
Sonja K Stell, Peter Moller
This paper explores the plasticity of sexually dimorphic characters in subadult female Brevimyrus niger, an African weakly electric mormyrid species. Thirty-five fish were exposed in a staggered fashion (five fish a week) to aromatizable 17α-methyltestosterone over a period of 7 weeks; 18 fish served as untreated controls. 17α-MT induced precocious vitellogenesis that mirrored the natural maturational process during seasonal ovarian recrudescence. At the same time, 17α-MT exposure resulted in complete masculinization of the females' anal fin support structure normally observed during rainy season in adult males...
June 6, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28589315/effect-of-blood-glucose-level-on-acute-stress-response-of-grass-carp-ctenopharyngodon-idella
#20
Danli Jiang, Yubo Wu, Di Huang, Xing Ren, Yan Wang
Stress has a considerable impact on welfare and productivity of fish, and blood glucose level of fish may be a factor modulating stress response. This study evaluated the effect of blood glucose level and handling on acute stress response of grass carp Ctenopharyngodon idella. Fish were intraperitoneally injected with glucose at 0, 0.2, 0.5, and 1.0 mg g(-1) body mass (BM) and then were exposed to handling for 5 min. Glucose injection resulted in increase of plasma glucose level and liver glycogen content and decrease of plasma lactate level...
June 6, 2017: Fish Physiology and Biochemistry
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