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https://www.readbyqxmd.com/read/27913189/construction-and-analysis-of-a-human-testis-sperm-enriched-interaction-network-unraveling-the-ppp1cc2-interactome
#1
Joana Vieira Silva, Sooyeon Yoon, Pieter-Jan De Bock, Alexander V Goltsev, Kris Gevaert, José Fernando F Mendes, Margarida Fardilha
BACKGROUND: Phosphoprotein phosphatase 1 catalytic subunit gamma 2 (PPP1CC2), a PPP1CC tissue-specific alternative splice restricted to testicular germ cells and spermatozoa, is essential for spermatogenesis and spermatozoa motility. The key to understand PPP1CC2 regulation lies on the characterization of its interacting partners. METHODS: We construct a testis/sperm-enriched protein interaction network and analyzed the topological properties and biological context of the network...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27912163/reproduction-impairment-and-endocrine-disruption-in-adult-zebrafish-danio-rerio-after-waterborne-exposure-to-tboep
#2
Qinglong Xu, Ding Wu, Yao Dang, Liqin Yu, Chunsheng Liu, Jianghua Wang
Tris (2-butoxyethyl) phosphate (TBOEP) is widely used as a substitute of polybrominated diphenyl ethers (PBDEs). It has been frequently measured at concentrations of micrograms per liter (μg/L) in surface waters and waste water. However, limited information is available about the reproduction toxicology of TBOEP. In this study, adult zebrafish pairs were exposed to TBOEP at concentrations of 0, 5, 50, and 500μg/L for 21days. The effects on reproduction, hormone concentration, transcription of genes along the hypothalamic-pituitary-gonadal (HPG) axis, and gonadal development were investigated...
November 24, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/27910919/group-benefit-associated-with-polymorphic-trichromacy-in-a-malagasy-primate-propithecus-verreauxi
#3
Carrie C Veilleux, Clara J Scarry, Anthony Di Fiore, E Christopher Kirk, Deborah A Bolnick, Rebecca J Lewis
In some primate lineages, polymorphisms in the X-linked M/LWS opsin gene have produced intraspecific variation in color vision. In these species, heterozygous females exhibit trichromacy, while males and homozygous females exhibit dichromacy. The evolutionary persistence of these polymorphisms suggests that balancing selection maintains color vision variation, possibly through a 'trichromat advantage' in detecting yellow/orange/red foods against foliage. We identified genetic evidence of polymorphic trichromacy in a population of Verreaux's sifaka (Propithecus verreauxi) at Kirindy Mitea National Park in Madagascar, and explored effects of color vision on reproductive success and feeding behavior using nine years of morphological, demographic, and feeding data...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910854/the-genetic-basis-and-fitness-consequences-of-sperm-midpiece-size-in-deer-mice
#4
Heidi S Fisher, Emily Jacobs-Palmer, Jean-Marc Lassance, Hopi E Hoekstra
An extensive array of reproductive traits varies among species, yet the genetic mechanisms that enable divergence, often over short evolutionary timescales, remain elusive. Here we examine two sister-species of Peromyscus mice with divergent mating systems. We find that the promiscuous species produces sperm with longer midpiece than the monogamous species, and midpiece size correlates positively with competitive ability and swimming performance. Using forward genetics, we identify a gene associated with midpiece length: Prkar1a, which encodes the R1α regulatory subunit of PKA...
December 2, 2016: Nature Communications
https://www.readbyqxmd.com/read/27908665/diffuse-resistance-courtship-in-the-scorpion-rhopalurus-rochai-scorpiones-buthidae
#5
Shayanne Chantall-Rocha, Hilton F Japyassú
Male-female courtship signals are frequently subject to arms races, with patterns of behaviour evolving reciprocally to manipulate the reproductive output. Female resistance should be particularly effective when asymmetrical offspring care occurs under low and unpredictable resource distribution, because this would increase maternal costs. Our hypothesis is that under these conditions females will evolve diffuse mating strategies to avoid predictable exploitation by male optimal counter tactics. Mating in scorpions is a complex process, and female resistance occurs through specific behaviours...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27908417/biphasic-action-of-iodine-in-excess-at-different-doses-on-ovary-in-adult-rats
#6
Dakshayani Mahapatra, Amar K Chandra
Iodine consumption in excess of its recommended levels over a prolonged period of time is well known to cause thyroid disorders. The thyroid hormones on the other hand are responsible in maintenance of the physiology of the reproductive system. Excess iodine intake affects male reproductive physiology. However, the effects of excess iodine on the ovarian structure and function is yet to be established. The present study has thus been undertaken to investigate the effect of excess iodine on the ovarian physiology...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27907106/brain-transcriptional-profiles-of-male-alternative-reproductive-tactics-and-females-in-bluegill-sunfish
#7
Charlyn G Partridge, Matthew D MacManes, Rosemary Knapp, Bryan D Neff
Bluegill sunfish (Lepomis macrochirus) are one of the classic systems for studying male alternative reproductive tactics (ARTs) in teleost fishes. In this species, there are two distinct life histories: parental and cuckolder, encompassing three reproductive tactics, parental, satellite, and sneaker. The parental life history is fixed, whereas individuals who enter the cuckolder life history transition from sneaker to satellite tactic as they grow. For this study, we used RNAseq to characterize the brain transcriptome of the three male tactics and females during spawning to identify gene ontology (GO) categories and potential candidate genes associated with each tactic...
2016: PloS One
https://www.readbyqxmd.com/read/27906670/stag3-regulates-microtubule-stability-to-maintain-euploidy-during-mouse-oocyte-meiotic-maturation
#8
Mianqun Zhang, Xiaoxin Dai, Yalu Sun, Yajuan Lu, Changyin Zhou, Yilong Miao, Ying Wang, Bo Xiong
Stag3, a meiosis-specific subunit of cohesin complex, has been demonstrated to function in both male and female reproductive systems in mammals. However, its roles during oocyte meiotic maturation have not been fully defined. In the present study, we report that Stag3 uniquely accumulates on the spindle apparatus and colocalizes with microtubule fibers during mouse oocyte meiotic maturation. Depletion of Stag3 by gene-targeting morpholino disrupts normal spindle assembly and chromosome alignment in oocytes...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27906584/effects-of-the-transforming-growth-factor-beta-signaling-pathway-on-the-differentiation-of-chicken-embryonic-stem-cells-into-male-germ-cells
#9
Yani Zhang, Yingjie Wang, Qisheng Zuo, Dong Li, Wenhui Zhang, Chao Lian, Beibei Tang, Tianrong Xiao, Man Wang, Kehua Wang, Bichun Li
The objectives of the present study were to screen for key gene and signaling pathways involved in the production of male germ cells in poultry and to investigate the effects of the transforming growth factor beta (TGF-β) signaling pathway on the differentiation of chicken embryonic stem cells (ESCs) into male germ cells. The ESCs, primordial germ cells, and spermatogonial stem cells (SSCs) were sorted using flow cytometry for RNA sequencing (RNA-seq) technology. Male chicken ESCs were induced using 40 ng/mL of bone morphogenetic protein 4 (BMP4)...
November 2016: Cellular Reprogramming
https://www.readbyqxmd.com/read/27905879/transcriptome-profiling-in-the-damselfly-ischnura-elegans-identifies-genes-with-sex-biased-expression
#10
Pallavi Chauhan, Maren Wellenreuther, Bengt Hansson
BACKGROUND: Sexual dimorphism occurs widely across the animal kingdom and has profound effects on evolutionary trajectories. Here, we investigate sex-specific gene expression in Ischnura elegans (Odonata: dragonflies and damselflies), a species with pronounced sexual differences including a female-limited colour polymorphism with two female-like gynochrome morphs and one male-mimicking, androchrome morph. Whole-organism transcriptome profiling and sex-biased gene expression analysis was conducted on adults of both sexes (pooling all females as well as separating the three morphs) to gain insights into genes and pathways potentially associated with sexual development and sexual conflict...
December 1, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27905665/multiple-paternity-in-a-wild-population-of-armadillidium-vulgare-influence-of-infection-with-wolbachia
#11
V Valette, S Durand, N Bech, F Grandjean, S Beltran-Bech
Female multiple mating has been extensively studied to understand how nonobvious benefits, generally thought to be of genetic nature, could overcome heavy costs such as an increased risk of infection during mating. However, the impact of infection itself on multiple mating has rarely been addressed. The interaction between the bacterium Wolbachia and its terrestrial crustacean host, Armadillidium vulgare, is a relevant model to investigate this question. In this association, Wolbachia is able to turn genetic males into functional females (i...
November 4, 2016: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/27905469/selection-for-predation-not-female-fecundity-explains-sexual-size-dimorphism-in-the-orchid-mantises
#12
Gavin J Svenson, Sydney K Brannoch, Henrique M Rodrigues, James C O'Hanlon, Frank Wieland
Here we reconstruct the evolutionary shift towards floral simulation in orchid mantises and suggest female predatory selection as the likely driving force behind the development of extreme sexual size dimorphism. Through analysis of body size data and phylogenetic modelling of trait evolution, we recovered an ancestral shift towards sexual dimorphisms in both size and appearance in a lineage of flower-associated praying mantises. Sedentary female flower mantises dramatically increased in size prior to a transition from camouflaged, ambush predation to a floral simulation strategy, gaining access to, and visually attracting, a novel resource: large pollinating insects...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905126/ameliorating-effects-of-fennel-and-cumin-extracts-on-sperm-quality-and-spermatogenic-cells-apoptosis-by-inducing-weight-loss-and-reducing-leptin-concentration-in-diet-induced-obese-rats
#13
R Nejatbakhsh, S Riyahi, A Farrokhi, S Rostamkhani, S Mahmazi, A Yazdinezhad, M Kazemi, S Shokri
This study was established a model of obesity to estimate the impact of fennel and cumin as anti-obesity extracts on body weight, body mass index (BMI), food consumption, leptin concentration, sperm quality and testis architecture to determine the reversibility of reproductive function of obese animals. Male rats were randomly assigned to either a normal or high-fat diet for 8 weeks. Then, we divided 56 adult rats into seven groups: control (CO); obesity (OB); fennel 100 and 200 mg/kg; cumin 50 and 100 mg/kg; and fennel 100 mg/kg plus cumin 50 mg/kg...
November 30, 2016: Andrologia
https://www.readbyqxmd.com/read/27904014/male-infertility-related-molecules-involved-in-sperm-oocyte-fusion
#14
Lisha Mou, Ni Xie
Male infertility has become a very serious problem in the human reproduction system, but the molecular mechanism of infertility remains largely unknown. Fertilization is the phenomenon in which a sperm and oocyte find each other, interact, and fuse. Sperm-oocyte fusion-related factors on the sperm side play crucial roles in male infertility. For example, IZUMO1 is well-known as a sperm protein essential for fusion of a sperm and oocyte, but its dysfunction or mutation can result in male infertility. Recent studies showed a novel sperm protein named Bactericidal/permeability-increasing protein (BPI), which takes part in the sperm-oocyte fusion process...
December 1, 2016: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/27903868/allee-effect-in-polar-bears-a-potential-consequence-of-polychlorinated-biphenyl-contamination
#15
Viola Pavlova, Jacob Nabe-Nielsen, Rune Dietz, Christian Sonne, Volker Grimm
Polar bears (Ursus maritimus) from East Greenland and Svalbard exhibited very high concentrations of polychlorinated biphenyls (PCBs) in the 1980s and 1990s. In Svalbard, slow population growth during that period was suspected to be linked to PCB contamination. In this case study, we explored how PCBs could have impacted polar bear population growth and/or male reproductive success in Svalbard during the mid-1990s by reducing the fertility of contaminated males. A dose-response relationship linking the effects of PCBs to male polar bear fertility was extrapolated from studies of the effects of PCBs on sperm quality in rodents...
November 30, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/27903428/gonadogenesis-and-annual-reproductive-cycles-of-an-endangered-cyprinid-fish-the-lake-minnow-eupallasella-percnurus-pallas-1814
#16
Piotr Hliwa, Jarosław Król, Justyna Sikorska, Jacek Wolnicki, Grzegorz J Dietrich, Rafał Kamiński, Agnieszka Stabińska, Andrzej Ciereszko
In this study, gonadogenesis, the effect of temperature (15, 20 and 25°C) on sex differentiation, and annual changes in the gonads of mature lake minnow Eupallasella percnurus (Pallas, 1814) were determined. The lake minnow was found to be a primary gonochoristic fish species, where gonads are formed directly in the ovaries or testes. The morphological differentiation of gonads was initiated 35days post hatch (DPH) when two types of gonadal anlages were visible: a pear-shaped gonad attached by a single mesentery string and a spindle-shaped gonad attached on both sides to the peritoneum...
November 22, 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27903323/reproductive-ecology-of-phorid-parasitoids-in-relation-to-the-head-size-of-leaf-cutting-ants-atta-sexdens-forel
#17
C F Farder-Gomes, M A Oliveira, P L Gonçalves, L M Gontijo, J C Zanuncio, M A L Bragança, E M Pires
The leaf-cutting ant Atta sexdens Forel (Hymenoptera: Formicidae) is one of the most damaging agricultural pests in the Neotropics. Management strategies predominantly rely on the use of general insecticides. What is needed are more species-specific and environmentally friendly options. Parasitioids such as phorid flies (Diptera: Phoridae) may be one such option, but a greater understanding of the ecology of the flies and their ant hosts is essential to devise biological control strategies. Here we report parasitism rates, ant host size, parasitoid abundance per host and resultant sex ratios of two phorid species Apocephalus attophilus Borgmeier and Eibesfeldtphora tonhascai Brown parasitizing A...
December 1, 2016: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/27902778/an-insecticide-further-enhances-experience-dependent-increased-behavioural-responses-to-sex-pheromone-in-a-pest-insect
#18
Antoine Abrieux, Amel Mhamdi, Kaouther K Rabhi, Julie Egon, Stéphane Debernard, Line Duportets, Hélène Tricoire-Leignel, Sylvia Anton, Christophe Gadenne
Neonicotinoid insecticides are widely used to protect plants against pest insects, and insecticide residues remaining in the environment affect both target and non-target organisms. Whereas low doses of neonicotinoids have been shown to disturb the behaviour of pollinating insects, recent studies have revealed that a low dose of the neonicotinoid clothianidin can improve behavioural and neuronal sex pheromone responses in a pest insect, the male moth Agrotis ipsilon, and thus potentially improve reproduction...
2016: PloS One
https://www.readbyqxmd.com/read/27902451/vitamin-d-and-male-reproductive-system
#19
Pablo R Costanzo, Pablo Knoblovits
Vitamin D deficiency is a highly prevalent worldwide condition and affects people of all ages. The most important role of vitamin D is the regulation of intestinal calcium absorption and metabolism of calcium and phosphorus to maintain muscle and bone homeostasis. Furthermore, in recent years it has been discovered that the vitamin D receptor (VDR) is widely distributed in many organs and tissues where vitamin D can perform other actions that include the modulation of the immune response, insulin secretion, anti-proliferative effect on cells of vascular smooth muscle, modulation of the renin-angiotensin-aldosterone system and regulates cell growth in several organs...
December 1, 2016: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/27901500/spatial-variation-in-the-parasitic-isopod-load-of-the-japanese-halfbeak-in-western-japan
#20
R Kawanishi, A Sogabe, R Nishimoto, H Hata
Cymothoid isopods (family Cymothoidae) are commonly found parasitizing diverse fishes, including commercial species. However, the effects of these parasites on host body condition are still poorly known. Here we investigated the spatial variation of the effects of parasite infection on host body condition, using the parasitic load of the cymothoid Mothocya parvostis on the Japanese halfbeak Hyporhamphus sajori at 4 sampling sites in western Japan. M. parvostis prevalence at each site (41.6-74.4%) was higher than that known for other fish host-cymothoid systems (usually less than 30%)...
November 22, 2016: Diseases of Aquatic Organisms
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