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Reproduction animal selective

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https://www.readbyqxmd.com/read/28333357/dietary-patterns-foods-and-nutrients-in-male-fertility-parameters-and-fecundability-a-systematic-review-of-observational-studies
#1
Albert Salas-Huetos, Mònica Bulló, Jordi Salas-Salvadó
BACKGROUND: Infertility is a global public health issue, affecting 15% of all couples of reproductive age. Male factors, including decreased semen quality, are responsible for ~25% of these cases. The dietary pattern, the components of the diet and nutrients have been studied as possible determinants of sperm function and/or fertility. OBJECTIVE AND RATIONALE: Previous systematic reviews have been made of the few heterogeneous low-quality randomized clinical trials (RCTs) conducted in small samples of participants and investigating the effect of specific nutrients and nutritional supplements on male infertility...
March 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28333238/clustering-of-pcos-like-traits-in-naturally-hyperandrogenic-female-rhesus-monkeys
#2
D H Abbott, B H Rayome, D A Dumesic, K C Lewis, A K Edwards, K Wallen, M E Wilson, S E Appt, J E Levine
STUDY QUESTION: Do naturally occurring, hyperandrogenic (≥1 SD of population mean testosterone, T) female rhesus monkeys exhibit traits typical of women with polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Hyperandrogenic female monkeys exhibited significantly increased serum levels of androstenedione (A4), 17-hydroxyprogesterone (17-OHP), estradiol (E2), LH, antimullerian hormone (AMH), cortisol, 11-deoxycortisol and corticosterone, as well as increased uterine endometrial thickness and evidence of reduced fertility, all traits associated with PCOS...
March 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28324834/ivermectin-alters-reproductive-success-body-condition-and-sexual-trait-expression-in-dung-beetles
#3
Daniel González-Tokman, Imelda Martínez M, Yesenia Villalobos-Ávalos, Roberto Munguía-Steyer, María Del Rosario Ortiz-Zayas, Magdalena Cruz-Rosales, Jean-Pierre Lumaret
Ivermectin is a very common parasiticide used in livestock. It is excreted in the dung and has negative effects on survival and reproduction of dung-degrading organisms, including dung beetles. Here we exposed the dung beetle Euoniticellus intermedius to different concentrations of ivermectin in the food and evaluated reproductive success and the expression of traits associated with survival and reproduction under laboratory conditions. It is the first time the effects of ivermectin were evaluated on offspring physiological condition and the expression of a secondary sexual trait...
March 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28319183/an-integrated-analysis-of-micro-and-macro-habitat-features-as-a-tool-to-detect-weather-driven-constraints-a-case-study-with-cavity-nesters
#4
D Campobello, J Lindström, R Di Maggio, M Sarà
The effects of climate change on animal populations may be shaped by habitat characteristics at both micro- and macro-habitat level, however, empirical studies integrating these two scales of observation are lacking. As analyses of the effects of climate change commonly rely on data from a much larger scale than the microhabitat level organisms are affected at, this mismatch risks hampering progress in developing understanding of the details of the ecological and evolutionary responses of organisms and, ultimately, effective actions to preserve their populations...
2017: PloS One
https://www.readbyqxmd.com/read/28303184/the-shifting-phenological-landscape-within-and-between-species-variation-in-leaf-emergence-in-a-mixed-deciduous-woodland
#5
Ella F Cole, Ben C Sheldon
Many organisms rely on synchronizing the timing of their life-history events with those of other trophic levels-known as phenological matching-for survival or successful reproduction. In temperate deciduous forests, the extent of matching with the budburst date of key tree species is of particular relevance for many herbivorous insects and, in turn, insectivorous birds. In order to understand the ecological and evolutionary forces operating in these systems, we require knowledge of the factors influencing leaf emergence of tree communities...
February 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28288562/genetic-diversity-and-signatures-of-selection-in-various-goat-breeds-revealed-by-genome-wide-snp-markers
#6
Luiz F Brito, James W Kijas, Ricardo V Ventura, Mehdi Sargolzaei, Laercio R Porto-Neto, Angela Cánovas, Zeny Feng, Mohsen Jafarikia, Flávio S Schenkel
BACKGROUND: The detection of signatures of selection has the potential to elucidate the identities of genes and mutations associated with phenotypic traits important for livestock species. It is also very relevant to investigate the levels of genetic diversity of a population, as genetic diversity represents the raw material essential for breeding and has practical implications for implementation of genomic selection. A total of 1151 animals from nine goat populations selected for different breeding goals and genotyped with the Illumina Goat 50K single nucleotide polymorphisms (SNP) Beadchip were included in this investigation...
March 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28286715/evolution-of-sexual-dimorphism-and-rensch-s-rule-in-the-beetle-genus-limnebius-hydraenidae-is-sexual-selection-opportunistic
#7
Andrey Rudoy, Ignacio Ribera
Sexual size dimorphism (SSD) is widespread among animals, with larger females usually attributed to an optimization of resources in reproduction and larger males to sexual selection. A general pattern in the evolution of SSD is Rensch's rule, which states that SSD increases with body size in species with larger males but decreases when females are larger. We studied the evolution of SSD in the genus Limnebius (Coleoptera, Hydraenidae), measuring SSD and male genital size and complexity of ca. 80% of its 150 species and reconstructing its evolution in a molecular phylogeny with 71 species...
2017: PeerJ
https://www.readbyqxmd.com/read/28286118/maternal-exposure-to-di-2-ethylhexyl-phthalate-dehp-promotes-the-transgenerational-inheritance-of-adult-onset-reproductive-dysfunctions-through-the-female-germline-in-mice
#8
Paola Pocar, Nadia Fiandanese, Anna Berrini, Camillo Secchi, Vitaliano Borromeo
Endocrine disruptors (EDs) are compounds known to promote transgenerational inheritance of adult-onset disease in subsequent generations after maternal exposure during fetal gonadal development. This study was designed to establish whether gestational and lactational exposure to the plasticizer di(2-ethylhexyl)phthalate (DEHP) at environmental doses promotes transgenerational effects on reproductive health in female offspring, as adults, over three generations in the mouse. Gestating F0 mouse dams were exposed to 0, 0...
March 9, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28284227/the-association-between-adverse-pregnancy-outcomes-and-maternal-human-papillomavirus-infection-a-systematic-review-protocol
#9
Joseph Niyibizi, Nadège Zanré, Marie-Hélène Mayrand, Helen Trottier
BACKGROUND: Human papillomavirus (HPV) is the most prevalent genital infection, especially in young women of reproductive age. In vitro and animal model experiments provide compelling evidence of the harmful effect of HPV on pregnancy outcomes, but results from epidemiologic studies are inconclusive. We aim to determine the strength of the relationship between adverse pregnancy outcomes (APO) and HPV infection and assess its consistency across studies, by systematically reviewing the literature...
March 11, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28275143/genomic-islands-of-divergence-or-opportunities-for-introgression
#10
Rachael A Bay, Kristen Ruegg
In animals, introgression between species is often perceived as the breakdown of reproductive isolating mechanisms, but gene flow between incipient species can also represent a source for potentially beneficial alleles. Recently, genome-wide datasets have revealed clusters of differentiated loci ('genomic islands of divergence') that are thought to play a role in reproductive isolation and therefore have reduced gene flow. We use simulations to further examine the evolutionary forces that shape and maintain genomic islands of divergence between two subspecies of the migratory songbird, Swainson's thrush (Catharus ustulatus), which have come into secondary contact since the last glacial maximum...
March 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28272485/construction-and-immunogenicity-of-a-recombinant-swinepox-virus-expressing-a-multi-epitope-peptide-for-porcine-reproductive-and-respiratory-syndrome-virus
#11
Huixing Lin, Zhe Ma, Xin Hou, Lei Chen, Hongjie Fan
To characterize neutralizing mimotopes, phages were selected from a 12-mer phage display library using three anti-porcine reproductive and respiratory syndrome virus (PRRSV) neutralizing monoclonal antibodies: (1) A1; (2) A2; and (3) A7. Of these, A2 and A7 recognize the mimotope, P2, which contains the SRHDHIH motif, which has conserved consensus sequences from amino acid positions 156 to 161 in the N-terminal ectodomain of GP3. The artificial multi-epitope gene, mp2, was designed by combining three repeats of the mimotope P2...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28271655/use-of-electroacupuncture-and-transcutaneous-electrical-acupoint-stimulation-in-reproductive-medicine-a-group-consensus
#12
Fan Qu, Rong Li, Wei Sun, Ge Lin, Rong Zhang, Jing Yang, Li Tian, Guo-Gang Xing, Hui Jiang, Fei Gong, Xiao-Yan Liang, Yan Meng, Jia-Yin Liu, Li-Ying Zhou, Shu-Yu Wang, Yan Wu, Yi-Jing He, Jia-Yu Ye, Song-Ping Han, Ji-Sheng Han
With the rapid development of assisted reproductive technology, various reproductive disorders have been effectively addressed. Acupuncture-like therapies, including electroacupuncture (EA) and transcutaneous electrical acupoint stimulation (TEAS), become more popular world-wide. Increasing evidence has demonstrated that EA and TEAS are effective in treating gynecological disorders, especially infertility. This present paper describes how to select acupoints for the treatment of infertility from the view of theories of traditional Chinese medicine and how to determine critical parameters of electric pulses of EA/TEAS based on results from animal and clinical studies...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28259703/-do-controlled-ovarian-hyperstimulations-and-cryopreservations-promote-recurrences-after-breast-cancer
#13
M-L Bergamini, C M Maugard, C Mathelin
The objective of this review was to identify recurrences (ipsilateral, contralateral, metastases and deaths) occurring after controlled ovarian hyperstimulation (COH) or cryopreservation of ovarian tissue (CPTO) for patients treated for a breast cancer. METHODS: We performed a bibliographical research through the Pubmed/Medline database, including all the references from January 2006 until September 2016, in French or in English, after exclusion of animal studies. The keywords association "breast neoplasms", "fertility preservation", "reproductive techniques", "ovarian cryopreservation" and "in vitro fertilization" allowed the selection of 852 publications among which only 6 were selected because they included data on recurrence and long term follow up...
March 1, 2017: Gynecol Obstet Fertil Senol
https://www.readbyqxmd.com/read/28259397/association-of-single-nucleotide-polymorphisms-in-candidate-genes-previously-related-to-genetic-variation-in-fertility-with-phenotypic-measurements-of-reproductive-function-in-holstein-cows
#14
M Sofia Ortega, Anna C Denicol, John B Cole, Daniel J Null, Jeremy F Taylor, Robert D Schnabel, Peter J Hansen
Many genetic markers related to health or production traits are not evaluated in populations independent of the discovery population or related to phenotype. Here we evaluated 68 single nucleotide polymorphisms (SNP) in candidate genes previously associated with genetic merit for fertility and production traits for association with phenotypic measurements of fertility in a population of Holstein cows that was selected based on predicted transmitting ability (PTA) for daughter pregnancy rate (DPR; high, ≥1, n = 989; low, ≤ -1...
March 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28257859/transcriptomic-evaluation-of-bovine-blastocysts-obtained-from-peri-pubertal-oocyte-donors
#15
Léonie Morin-Doré, Patrick Blondin, Christian Vigneault, François-Xavier Grand, Rémi Labrecque, Marc-André Sirard
Assisted reproduction technologies (ART) and high selection pressure in the dairy industry are leading towards the use of younger females for reproduction, thereby reducing the interval between generations. This situation may have a negative impact on embryo quality, thus reducing the success rate of the procedures. This study aimed to document the effects of oocyte donor age on embryo quality, at the transcriptomic level, in order to characterize the effects of using young females for reproduction purpose...
April 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28237337/parameter-estimates-for-reproductive-and-carcass-traits-in-nelore-beef-cattle
#16
M E Buzanskas, P S Pires, T C S Chud, P A Bernardes, L D Rola, R P Savegnago, R B Lôbo, D P Munari
The aim of this study was to estimate genetic parameters for scrotal circumference at 365 (SC365) and 450 (SC450) days of age, age at first calving (AFC), ribeye area (REA), backfat (BF) thickness, and rump fat (RF) thickness, in order to provide information on potential traits for Nelore cattle breeding program. Genetic parameters were estimated using the Average Information Restricted Maximum Likelihood method in single- and multitrait analyses. Four different animal models were tested for SC365, SC450, REA, BF, and RF in single-trait analyses...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28237326/metabolic-profiling-of-stages-of-healthy-pregnancy-in-hu-sheep-using-nuclear-magnetic-resonance-nmr
#17
Lingwei Sun, Yixuan Guo, Yixuan Fan, Haitao Nie, Ruocheng Wang, Feng Wang
Nutrition is one of the most important factors affecting the reproductive performance of animals. Changes in the ovine maternal metabolism during pregnancy are critical to fetal development. To understand the differences in ovine metabolic changes that occur during normal pregnancy, pregnant ewes carrying twin fetuses (n = 8) were selected at 35 days of gestation (dG). All ewes received 100% of National Research Council (NRC) requirements of all nutrients and energy during this experiment. At 50, 70, 90, and 110 dG, maternal plasma samples were collected and designated as one of four corresponding time points (T1, T2, T3, and T4, respectively)...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28235410/tcf21-is-related-to-testis-growth-and-development-in-broiler-chickens
#18
Hui Zhang, Wei Na, Hong-Li Zhang, Ning Wang, Zhi-Qiang Du, Shou-Zhi Wang, Zhi-Peng Wang, Zhiwu Zhang, Hui Li
BACKGROUND: Large amounts of fat deposition often lead to loss of reproductive efficiency in humans and animals. We used broiler chickens as a model species to conduct a two-directional selection for and against abdominal fat over 19 generations, which resulted in a lean and a fat line. Direct selection for abdominal fat content also indirectly resulted in significant differences (P < 0.05) in testis weight (TeW) and in TeW as a percentage of total body weight (TeP) between the lean and fat lines...
February 24, 2017: Genetics, Selection, Evolution: GSE
https://www.readbyqxmd.com/read/28217865/caching-reduces-kleptoparasitism-in-a-solitary-large-felid
#19
Guy A Balme, Jennifer R B Miller, Ross T Pitman, Luke T B Hunter
Food caching is a common strategy used by a diversity of animals, including carnivores, to store and/or secure food. Despite its prevalence, the drivers of caching behaviour, and its impacts on individuals, remain poorly understood, particularly for short-term food cachers. Leopards Panthera pardus exhibit a unique form of short-term food caching, regularly hoisting, storing, and consuming prey in trees. We explored the factors motivating such behaviour among leopards in the Sabi Sand Game Reserve, South Africa, associated with four not mutually exclusive hypotheses: food-perishability, consumption-time, resource-pulse, and kleptoparasitism-avoidance...
February 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28199168/my-scientific-journey-from-an-agrarian-start-to-an-academic-setting
#20
Janice M Bahr
This article is a combination of an autobiography and a review of outstanding research done by over 70 graduate students, postdoctoral fellows, and visiting scientists along with excellent collaborators during my over-40-year career as a professor of reproductive physiology at the University of Illinois, Urbana-Champaign. I have also shared thoughts on mentoring, how research has changed over the years, and the future of reproductive physiology. I provide the reader with a snapshot of the challenges faced by a woman eager to obtain a PhD under the guidance of renowned professors in the early 1970s and to be hired as the first woman, and the only permanent female faculty member, for more than 20 years on a faculty of 40 men...
February 8, 2017: Annual Review of Animal Biosciences
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