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https://www.readbyqxmd.com/read/28919018/de-novo-transcriptome-assembly-of-the-calanoid-copepod-neocalanus-flemingeri-a-new-resource-for-emergence-from-diapause
#1
Vittoria Roncalli, Matthew C Cieslak, Stephanie A Sommer, Russell R Hopcroft, Petra H Lenz
Copepods, small planktonic crustaceans, are key links between primary producers and upper trophic levels, including many economically important fishes. In the subarctic North Pacific, the life cycle of copepods like Neocalanus flemingeri includes an ontogenetic migration to depth followed by a period of diapause (a type of dormancy) characterized by arrested development and low metabolic activity. The end of diapause is marked by the production of the first brood of eggs. Recent temperature anomalies in the North Pacific have raised concerns about potential negative effects on N...
September 14, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28904021/bap-exposure-causes-oocyte-meiotic-arrest-and-fertilization-failure-to-weaken-female-fertility
#2
Mianqun Zhang, Yilong Miao, Qian Chen, Meng Cai, Wenkang Dong, Xiaoxin Dai, Yajuan Lu, Changyin Zhou, Zhaokang Cui, Bo Xiong
Benzo[a]pyrene (BaP) is a ubiquitous environmental pollutant and carcinogen that is frequently found in particulate matter, with a diameter of ≤2.5 μm (PM2.5). It has been reported to interrupt the normal reproductive system, but the exact molecular basis has not been clearly defined. To understand the underlying mechanisms regarding how BaP exposure disrupts female fertility, we evaluated oocyte quality by assessing the critical regulators and events during oocyte meiotic maturation and fertilization. We found that BaP exposure compromised the mouse oocyte meiotic progression by disrupting normal spindle assembly, chromosome alignment, and kinetochore-microtubule attachment, consequently leading to the generation of aneuploid eggs...
September 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28899362/nationwide-cross-sectional-survey-of-schistosomiasis-and-soil-transmitted-helminthiasis-in-sudan-study-protocol
#3
Seungman Cha, Sung-Tae Hong, Young-Ha Lee, Keon Hoon Lee, Dae Seong Cho, Jinmoo Lee, Jong-Yil Chai, Mousab Siddig Elhag, Soheir Gabralla Ahmad Khaled, Mustafa Khidir Mustafa Elnimeiri, Nahid Abdelgadeir Ali Siddig, Hana Abdelrazig, Sarah Awadelkareem, Azza Tag Eldin Elshafie, Hassan Ahmed Hassan Ahmed Ismail, Mutamad Amin
BACKGROUND: Schistosomiasis and soil-transmitted helminthiasis (STHs) are target neglected tropical diseases (NTDs) of preventive chemotherapy, but the control and elimination of these diseases have been impeded due to resource constraints. Few reports have described study protocol to draw on when conducting a nationwide survey. We present a detailed methodological description of the integrated mapping of schistosomiasis and STHs on the basis of our experiences, hoping that this protocol can be applied to future surveys in similar settings...
September 12, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28889807/no-nutritional-benefits-of-egg-cannibalism-for-coleomegilla-maculata-coleoptera-coccinellidae-on-a-high-quality-diet
#4
A H Abdelwahab, J P Michaud, M H Bayoumy, S S Awadalla, M El-Gendy
Egg cannibalism serves various functions in the Coccinellidae. Here we examined the fitness consequences of egg cannibalism by neonates, fourth instar larvae, and prereproductive adults of Coleomegilla maculata DeGeer, with beetles fed a diet of Ephestia kuehniella Zeller eggs. Cannibalism of two eggs by neonates had no effect on development, and cannibalism of five eggs by fourth instars did not benefit any aspect of reproduction, but delayed pupation slightly. Cannibalism of eggs by pre-reproductive adults had no effect on reproductive success in any combination of reciprocal crosses of cannibals and non-cannibals...
September 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28885687/peptide-supplementation-to-nutrient-adequate-diets-enhanced-internal-egg-quality-during-storage-in-hens-at-peak-production
#5
Oluyinka A Olukosi, Wei W Xiao, Jing Jia
BACKGROUND: There is paucity of information on the use of dietary peptides in laying hens and its effects on egg production and quality. In the current study, peptide from enzymatic hydrolysis of soybean protein was incorporated into laying hens diets to investigate its effect on egg production and internal egg quality. RESULTS: There were no treatment effects on egg production (average hen day production was 96%) during the experiment. Final body weight of the hens increased quadratically (P < 0...
September 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28882146/does-mosquito-mass-rearing-produce-an-inferior-mosquito
#6
Dieudonné D Soma, Hamidou Maïga, Wadaka Mamai, Nanwintoun S Bimbile-Somda, Nelius Venter, Adel B Ali, Hanano Yamada, Abdoulaye Diabaté, Florence Fournet, Georges A Ouédraogo, Rosemary S Lees, Roch K Dabiré, Jeremie R L Gilles
BACKGROUND: The success of the sterile insect technique depends, among other things, on continuous releases of sexually competitive sterile males within the target area. Several factors (including high rearing density and physical manipulation, such as larvae and pupae separation) can influence the quality of males produced in mass-rearing facilities. The different steps in mass production in the laboratory may modify the behaviour of mosquitoes, directly or through loss of natural characters as a result of adaptation to lab rearing, and lead to the competitiveness of sterile male being reduced...
September 7, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28880463/exploratory-and-descriptive-study-on-nutritional-characteristics-and-quality-of-eggs-from-chilean-partridge-nothoprocta-perdicaria
#7
José Luis Arias, Alberto Matthei, Carolina Valenzuela
This work aims to contribute more information on tinamou eggs by performing an exploratory and descriptive study of some of their nutritional and quality characteristics. The chemical composition of tinamou egg showed a high protein content in white (85% dry basis) and high lipid concentration in yolk (52% db). The iron (Fe) content in white was higher than hen egg (0.47 mg/100 g) and this could be associated with the observed pinkish color of the white. As in the hen egg, the major fatty acids in tinamou yolk were: oleic (39%), linoleic (23%) and palmitic (20%)...
September 7, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28875071/intraclutch-eggshell-colour-variation-in-birds-are-females-able-to-identify-their-eggs-individually
#8
Miroslav Poláček, Michaela Bartíková, Herbert Hoi
BACKGROUND: One possibility suggested regarding female post-mating strategies is differential allocation into offspring investment. Female birds produce not only the largest, but also most colourful eggs of all oviparous taxa. Larger eggs provide space for bigger embryos, or more nutrition for their development, but the question why eggs are more colourful and why there is variation in eggshell colouration remains. In this context, the focus of interest has been to explain inter-clutch variation but in many bird species, eggshell colouration also varies within a clutch...
2017: PeerJ
https://www.readbyqxmd.com/read/28873559/protective-effects-of-soybean-protein-and-egg-white-protein-on-the-antibacterial-activity-of-nisin-in-the-presence-of-trypsin
#9
Dan Pan, Dong Zhang, Limin Hao, Songyang Lin, Qiaozhen Kang, Xin Liu, Laizheng Lu, Jike Lu
The using of nisin to prevent foodborne pathogens (Staphylococcus aureus and Listeria monocytogenes) from contamination has received broad attentions during meat processing. However, the application of nisin has been limited because its antibacterial activity may be inhibited by trypsin. In this study, the protective effects of soybean protein and egg white protein on antibacterial activity of nisin were evaluated. It could be concluded that exogenous trypsin decreased the antibacterial activity of nisin, soybean protein and egg white protein could keep the nisin activity from enzymolysis of trypsin...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28858792/joint-machine-learning-and-game-theory-for-rate-control-in-high-efficiency-video-coding
#10
Wei Gao, Sam Kwong, Yuheng Jia
In this paper, a joint machine learning and game theory modeling (MLGT) framework is proposed for inter frame coding tree unit (CTU) level bit allocation and rate control (RC) optimization in High Efficiency Video Coding (HEVC). First, a support vector machine (SVM) based multi-classification scheme is proposed to improve the prediction accuracy of CTU-level Rate-Distortion (R-D) model. The legacy "chicken-and-egg" dilemma in video coding is proposed to be overcome by the learning-based R-D model. Second, a mixed R-D model based cooperative bargaining game theory is proposed for bit allocation optimization, where the convexity of the mixed R-D model based utility function is proved, and Nash bargaining solution (NBS) is achieved by the proposed iterative solution search method...
August 25, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28854656/attempt-to-develop-cost-effective-rearing-of-amblyseius-swirskii-acari-phytoseiidae-assessment-of-different-artificial-diets
#11
Elham Riahi, Yaghoub Fathipour, Ali Asghar Talebi, Mohammad Mehrabadi
Commercial production of Amblyseius swirskii Athias-Henriot based on storage mites needs both space and labor to maintain large cultures of these prey, and also may lead to health problems for workers. Therefore, the accessibility of a suitable artificial diet could eliminate the mentioned problems; however, the artificial diets must support the persistent production of high quality progeny. This study endeavored to find a more easily available and cheaper nutrient that may further reduce the cost of diet production for A...
August 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28854651/effects-of-storage-at-suboptimal-temperatures-on-the-in-vitro-reared-parasitoid-exorista-larvarum-diptera-tachinidae
#12
M Benelli, E Marchetti, M L Dindo
Exorista larvarum (L.) is a tachinid parasitoid native to the Palearctic region, known as an antagonist of lepidopterous defoliators. This species is suitable to be cultured in vitro, and yields of fecund adults, approaching those usually attained in host larvae, have been previously achieved on artificial media. Direct oviposition by E. larvarum on media has not yet been obtained, and the eggs for the in vitro rearing are routinely removed from parasitized host larvae. However, many eggs are usually laid throughout the cage by captive females and can be retrieved by placing them on artificial media...
August 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28841164/dietary-cholesterol-in-the-elderly-chinese-population-an-analysis-of-cnhs-2010-2012
#13
Shao-Jie Pang, Shan-Shan Jia, Qing-Qing Man, Shuang Song, Yu-Qian Li, Peng-Kun Song, Wen-Hua Zhao, Jian Zhang
Dietary cholesterol intake increased dramatically over the past two decades in the elderly Chinese population. However, the nationwide dietary cholesterol intake and its related factors seldom been investigated. Based on data from 16,594 participants aged 60 years or older (49.0% male, 54.8% urban residents) from the China National Nutrition and Health Survey (CNHS) 2010-2012, we aimed to describe the intake of cholesterol and major food contributions, as well as its association with serum cholesterol level and relationship with protein intake...
August 25, 2017: Nutrients
https://www.readbyqxmd.com/read/28835293/effect-of-a-photoperiodic-green-light-programme-during-incubation-on-embryo-development-and-hatch-process
#14
Q Tong, I M McGonnell, T G M Demmers, N Roulston, H Bergoug, C E Romanini, R Verhelst, M Guinebretière, N Eterradossi, D Berckmans, V Exadaktylos
This study was conducted to evaluate the effect of a 12-h light, 12-h dark (12L : 12D) photoperiod of green light during day 1 to day 18 of incubation time, on embryo growth, hormone concentration and the hatch process. In the test group, monochromatic light was provided by a total of 204 green light-emitting diodes (522 nm) mounted in a frame which was placed above the top tray of eggs to give even spread of illumination. No light-dark cycle was used in the control group. Four batches of eggs (n=300/group per batch) from fertile Ross 308 broiler breeders were used in this experiment...
August 24, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28830086/hydrogen-sulfide-and-its-roles-in-saccharomyces-cerevisiae-in-a-winemaking-context
#15
Chien-Wei Huang, Michelle E Walker, Bruno Fedrizzi, Richard C Gardner, Vladimir Jiranek
The rotten-egg odour of hydrogen sulfide (H2S) produced by the yeast Saccharomyces cerevisiae has attracted considerable research interest due to its huge impact on the sensory quality of fermented foods and beverages. To date, the yeast genetic mechanisms of H2S liberation during wine fermentation are well understood and yeast strains producing low levels of H2S have been developed. Studies have also revealed that H2S is not just a by-product in the biosynthesis of the sulfur-containing amino acids, but indeed a vital molecule involved in detoxification, population signalling and extending cellular life span...
September 1, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28829796/linear-functional-response-by-two-pupal-drosophila-parasitoids-foraging-within-single-or-multiple-patch-environments
#16
Gülay Kaçar, Xin-Geng Wang, Antonio Biondi, Kent M Daane
Functional response describes the number of prey or hosts attacked by a predator or parasitoid as a function of prey or host density. Using three different experimental designs, we found a linear functional response by two insect parasitoids (the pteromalid Pachycrepoideus vindemiae and the diapriid Trichopria drosophilae) to their hosts (the drosophilids Drosophila suzukii and D. melanogaster). A linear function response is considered unusual for insect parasitoids. The first design was a 'fixed time within patch experiment' where individual parasitoids were exposed to a range of host densities for 24 h; the second two designs were a 'variable time functional response' and a 'selective functional response' experiments where individual parasitoids were presented with a range of host patches and allowed to freely select and explore only one patch (variable time) or forage for 24 h (selective)...
2017: PloS One
https://www.readbyqxmd.com/read/28828044/nutritional-knowledge-attitude-and-practice-of-north-west-households-in-iran-is-knowledge-likely-to-become-practice
#17
Sakineh Nouri Saeidlou, Fariba Babaei, Parvin Ayremlou
BACKGROUND: Nutritional factors have an important role in the incidence of non-communicable diseases and they are strong predictors of cardiovascular risk among adolescents. This study was conducted to assess the Knowledge, Attitude and Practice (KAP) of urban and rural households towards the principles of nutrition in West Azerbaijan Province. DESIGN AND METHODS: This cross sectional population based study was conducted among 455 urban and rural households. The sampling method at households' level in each area was the single stage cluster sampling...
December 2016: Mædica
https://www.readbyqxmd.com/read/28822314/a-portable-smart-phone-device-for-rapid-and-sensitive-detection-of-e-coli-o157-h7-in-yoghurt-and-egg
#18
Mohamed Maarouf Ali Zeinhom, Yijia Wang, Yang Song, Mei-Jun Zhu, Yuehe Lin, Dan Du
The detection of E. coli O157:H7 in foods has held the attention of many researchers because of the seriousness attributed to this pathogen. In this study, we present a simple, sensitive, rapid and portable smartphone based fluorescence device for E. coli O157:H7 detection. This field-portable fluorescent imager on the smartphone involves a compact laser-diode-based photosource, a long-pass (LP) thin-film interference filter and a high-quality insert lenses. The design of the device provided a low noise to background imaging system...
August 4, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28822243/chrysin-induced-sperm-parameters-and-fatty-acid-profile-changes-improve-reproductive-performance-of-roosters
#19
Ali Sami Amin Altawash, Ahmad Zare Shahneh, Hossein Moravej, Mahdi Ansari
Having antioxidant and androgenic effects, Chrysin was orally administrated to roosters and reproductive performance including sperm quality and fatty acid composition, testis index, fertility and hatchability rates as well as blood testosterone concentration were assessed. Twenty eight 40-week-old Ross 308 roosters were individually housed, equally divided into four groups and received different levels of capsulated Chrysin including 0 (Ch0), 25 (Ch25), 50 (Ch50) or 75 (Ch75) mg/bird/day for 12 consecutive weeks...
August 5, 2017: Theriogenology
https://www.readbyqxmd.com/read/28817948/effects-of-dietary-supplementation-of-resveratrol-on-performance-egg-quality-yolk-cholesterol-and-antioxidant-enzyme-activity-of-laying-hens
#20
Z H Feng, J G Gong, G X Zhao, X Lin, Y C Liu, K W Ma
1. This experiment was conducted to evaluate the effects of dietary supplementation of resveratrol on laying performance, egg quality, egg yolk cholesterol and antioxidant enzyme activities of laying hens. 2. A total of 360 Beijing PINK-1 laying hens (60 weeks old) were randomly distributed among five dietary treatments, each of which included 6 replicates of 12 hens. Dietary treatments were basal diet supplemented with 0 (control), 0.5, 1.0, 2.0 and 4.0 g/kg diet resveratrol. The study lasted for 9 weeks including 1 week of adaptation and 8 weeks of the main experimental period...
September 4, 2017: British Poultry Science
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