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https://www.readbyqxmd.com/read/28924263/refinement-of-ectopic-protein-expression-through-the-gal4-uas-system-in-bombyx-mori-application-to-behavioral-and-developmental-studies
#1
Chiho Hara, Koudai Morishita, Seika Takayanagi-Kiya, Akihisa Mikami, Keiro Uchino, Takeshi Sakurai, Ryohei Kanzaki, Hideki Sezutsu, Masafumi Iwami, Taketoshi Kiya
Silkmoth, Bombyx mori, is one of the important model insects in which transgenic techniques and the GAL4/UAS system are applicable. However, due to cytotoxicity and low transactivation activity of GAL4, effectiveness of the GAL4/UAS system and its application in B. mori are still limited. In the present study, we refined the previously reported UAS vector by exploiting transcriptional and translational enhancers, and achieved 200-fold enhancement of reporter GFP fluorescence in the GAL4/UAS system. Enhanced protein expression of membrane-targeted GFP and calcium indicator protein (GCaMP5G) drastically improved visualization of fine neurite structures and neural activity, respectively...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28919559/adipokinetic-hormone-receptor-gene-identification-and-its-role-in-triacylglycerol-mobilization-and-sexual-behavior-in-the-oriental-fruit-fly-bactrocera-dorsalis
#2
Qiu-Li Hou, Er-Hu Chen, Hong-Bo Jiang, Dan-Dan Wei, Shun-Hua Gui, Jin-Jun Wang, Guy Smagghe
Energy homeostasis requires continuous compensation for fluctuations in energy expenditure and availability of food resources. In insects, energy mobilization is under control of the adipokinetic hormone (AKH) where it is regulating the nutritional status by supporting the mobilization of lipids. In this study, we characterized the gene coding for the AKH receptor (AKHR) and investigated its function in the oriental fruit fly (Bactrocera dorsalis) that is economically one of the most important pest insects of tropical and subtropical fruit...
September 15, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28918947/hormonal-signaling-cascade-during-an-early-adult-critical-period-required-for-courtship-memory-retention-in-drosophila
#3
Sang Soo Lee, Yike Ding, Natalie Karapetians, Crisalejandra Rivera-Perez, Fernando Gabriel Noriega, Michael E Adams
Formation and expression of memories are critical for context-dependent decision making. In Drosophila, a courting male rejected by a mated female subsequently courts less avidly when paired with a virgin female, a behavioral modification attributed to "courtship memory." Here we show the critical role of hormonal state for maintenance of courtship memory. Ecdysis-triggering hormone (ETH) is essential for courtship memory through regulation of juvenile hormone (JH) levels in adult males. Reduction of JH levels via silencing of ETH signaling genes impairs short-term courtship memory, a phenotype rescuable by the JH analog methoprene...
September 7, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28904748/the-complexity-of-mating-decisions-in-stalk-eyed-flies
#4
Nadine C Chapman, Penthai Siriwat, James Howie, Aaron Towlson, Lawrence Bellamy, Kevin Fowler, Andrew Pomiankowski
All too often, studies of sexual selection focus exclusively on the responses in one sex, on single traits, typically those that are exaggerated and strongly sexually dimorphic. They ignore a range of less obvious traits and behavior, in both sexes, involved in the interactions leading to mate choice. To remedy this imbalance, we analyze a textbook example of sexual selection in the stalk-eyed fly (Diasemopsis meigenii). We studied several traits in a novel, insightful, and efficient experimental design, examining 2,400 male-female pairs in a "round-robin" array, where each female was tested against multiple males and vice versa...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28902472/the-mushroom-body-d1-dopamine-receptor-controls-innate-courtship-drive
#5
Junghwa Lim, Ana I Fernandez, Samantha J Hinojos, Gissel P Aranda, Jacqueline James, Chang-Soo Seong, Kyung-An Han
Mating is critical for species survival and is profoundly regulated by neuromodulators and neurohormones to accommodate internal states and external factors. To identify the underlying neuromodulatory mechanisms, we investigated the roles of dopamine receptors in various aspects of courtship behavior in Drosophila. Here we report that the D1 dopamine receptor dDA1 regulates courtship drive in naïve males. The wild-type naïve males actively courted females regardless their appearance or mating status. On the contrary, the dDA1 mutant (dumb) males exhibited substantially reduced courtship toward less appealing females including decapitated, leg-less and mated females...
September 13, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/28899142/more-courtship-letters-of-freud-and-martha-bernays-sigmund-freud-martha-bernays-die-brautbriefe-band-3-warten-in-ruhe-und-ergebung-warten-in-kampf-und-erregung-the-letters-during-their-engagement-vol-3-waiting-quietly-and-with-surrender-waiting-struggling-and
#6
https://www.readbyqxmd.com/read/28893376/regulation-of-sleep-homeostasis-by-sexual-arousal
#7
Esteban J Beckwith, Quentin Geissmann, Alice S French, Giorgio F Gilestro
In all animals, sleep pressure is under continuous tight regulation. It is universally accepted that this regulation arises from a two-process model, integrating both a circadian and a homeostatic controller. Here we explore the role of environmental social signals as a third, parallel controller of sleep homeostasis and sleep pressure. We show that, in Drosophila melanogaster males, sleep pressure after sleep deprivation can be counteracted by raising their sexual arousal, either by engaging the flies with prolonged courtship activity or merely by exposing them to female pheromones...
September 12, 2017: ELife
https://www.readbyqxmd.com/read/28892486/misattribution-of-musical-arousal-increases-sexual-attraction-towards-opposite-sex-faces-in-females
#8
Manuela M Marin, Raphaela Schober, Bruno Gingras, Helmut Leder
Several theories about the origins of music have emphasized its biological and social functions, including in courtship. Music may act as a courtship display due to its capacity to vary in complexity and emotional content. Support for music's reproductive function comes from the recent finding that only women in the fertile phase of the reproductive cycle prefer composers of complex melodies to composers of simple ones as short-term sexual partners, which is also in line with the ovulatory shift hypothesis...
2017: PloS One
https://www.readbyqxmd.com/read/28888695/characterization-of-seasonal-reproductive-and-stress-steroid-hormones-in-wild-radiated-tortoises-astrochelys-radiata
#9
Andrea F T Currylow, Tsilavo H Rafeliarisoa, Edward E Louis, Craig B Stanford, Soary T Randrianjafizanaka, Sarah M Chinn, Daniel E Crocker
The critically endangered Radiated Tortoise (Astrochelys radiata) is endemic to the southern coastlines of Madagascar. Once common, wild populations of this tortoise have undergone dramatic declines in recent years. Although there have been studies documenting reproductive activities, reproductive physiological parameters are unknown yet may be crucial in the recovery of the species. Over four research seasons in remote field locations native to A. radiata, we surveyed for, radio-tracked, and sampled wild, free ranging tortoises...
September 6, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28879001/booming-far-the-long-range-vocal-strategy-of-a-lekking-bird
#10
C Cornec, Y Hingrat, T Aubin, F Rybak
The pressures of selection acting on transmission of information by acoustic signals are particularly high in long-distance communication networks. Males of the North African houbara bustard (Chlamydotis undulata undulata) produce extremely low-frequency vocalizations called 'booms' as a component of their courtship displays. These displays are performed on sites separated by a distance of on average 550 m, constituting exploded leks. Here, we investigate the acoustic features of booms involved in species-specific identity...
August 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28868750/life-in-a-bubble-the-role-of-the-labyrinth-organ-in-determining-territory-mating-and-aggressive-behaviours-in-anabantoids
#11
REVIEW
M Tate, R E McGoran, C R White, S J Portugal
The anabantoids are a group of c. 137 species of air-breathing freshwater fishes found in Africa and southern Asia. All anabantoids have a pair of suprabranchial chambers that each house an air-breathing organ known as the labyrinth apparatus: a complex bony structure lined with thin, highly vascularised respiratory epithelium. The labyrinth apparatus allows anabantoids to extract oxygen from air and is a morpho-physiological innovation that has had a dramatic influence on the behaviour of these fishes. Air-breathing influences a wide range of anabantoid behaviours, including territorial displays, courtship and breeding and parental care and also equips these fishes to persist in hypoxic and polluted water...
September 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28858617/a-circuit-node-that-integrates-convergent-input-from-neuromodulatory-and-social-behavior-promoting-neurons-to-control-aggression-in-drosophila
#12
Kiichi Watanabe, Hui Chiu, Barret D Pfeiffer, Allan M Wong, Eric D Hoopfer, Gerald M Rubin, David J Anderson
Diffuse neuromodulatory systems such as norepinephrine (NE) control brain-wide states such as arousal, but whether they control complex social behaviors more specifically is not clear. Octopamine (OA), the insect homolog of NE, is known to promote both arousal and aggression. We have performed a systematic, unbiased screen to identify OA receptor-expressing neurons (OARNs) that control aggression in Drosophila. Our results uncover a tiny population of male-specific aSP2 neurons that mediate a specific influence of OA on aggression, independent of any effect on arousal...
August 30, 2017: Neuron
https://www.readbyqxmd.com/read/28851830/experimental-and-statistical-reevaluation-provides-no-evidence-for-drosophila-courtship-song-rhythms
#13
David L Stern, Jan Clemens, Philip Coen, Adam J Calhoun, John B Hogenesch, Ben J Arthur, Mala Murthy
From 1980 to 1992, a series of influential papers reported on the discovery, genetics, and evolution of a periodic cycling of the interval between Drosophila male courtship song pulses. The molecular mechanisms underlying this periodicity were never described. To reinitiate investigation of this phenomenon, we previously performed automated segmentation of songs but failed to detect the proposed rhythm [Arthur BJ, et al. (2013) BMC Biol 11:11; Stern DL (2014) BMC Biol 12:38]. Kyriacou et al. [Kyriacou CP, et al...
August 29, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28851647/mechanisms-of-sleep-plasticity-due-to-sexual-experience-in-drosophila-melanogaster
#14
Abigail E Dove, Brianne L Cook, Zhazira Irgebay, Christopher G Vecsey
Sleep can be altered by an organism's previous experience. For instance, female Drosophila melanogaster experience a post-mating reduction in daytime sleep that is purportedly mediated by sex peptide (SP), one of many seminal fluid proteins (SFPs) transferred from male to female during mating. In the present study, we first characterized this mating effect on sleep more fully, as it had previously only been tested in young flies under 12h light/12h dark conditions. We found that mating reduced sleep equivalently in 3-day-old or 14-day-old females, and could even occur in females who had been mated previously, suggesting that there is not a developmental critical period for the suppression of sleep by mating...
August 26, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28851405/the-erm-protein-moesin-is-essential-for-neuronal-morphogenesis-and-long-term-memory-in-drosophila
#15
Patrick S Freymuth, Helen L Fitzsimons
Moesin is a cytoskeletal adaptor protein that plays an important role in modification of the actin cytoskeleton. Rearrangement of the actin cytoskeleton drives both neuronal morphogenesis and the structural changes in neurons that are required for long-term memory formation. Moesin has been identified as a candidate memory gene in Drosophila, however, whether it is required for memory formation has not been evaluated. Here, we investigate the role of Moesin in neuronal morphogenesis and in short- and long-term memory formation in the courtship suppression assay, a model of associative memory...
August 29, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28811831/potent-phosphodiesterase-inhibition-and-nitric-oxide-release-stimulation-of-anti-impotence-thai-medicinal-plants-from-manosroi-iii-database
#16
Aranya Manosroi, Theeraphong Tangjai, Charinya Chankhampan, Worapaka Manosroi, Yaravee Najarut, Worapong Kitdamrongtham, Jiradej Manosroi
Seven plants in the top rank were selected from the "MANOSROI III" database using the two Thai keywords which meant impotence and sexual tonic. Boesenbergia rotunda (L.) Mansf. extract [EDP1-001(1)] gave the highest PDE inhibition activity of 4.36-fold sildenafil, a standard anti-impotence drug. Plumbago indica Linn. extract [EDP2-001(1)] exhibited the highest NO release stimulation activity of 666.85% which was 1.50-fold acetylcholine, a standard drug. Most selected plant extracts were nontoxic to EA.hy926 cells at 1...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28811167/differences-in-mating-behavior-between-two-allopatric-populations-of-a-neotropical-scorpion
#17
Paola A Olivero, Camilo I Mattoni, Alfredo V Peretti
Courtship and mating behavior generally evolve rapidly in diverging populations and species. The adaptation to different environments may cause behavioral divergence in characteristics involved in mate choice. Our objective in this study was to compare the sexual behavior of two distant populations of the scorpion Bothriurus bonariensis. This species has a broad distribution in South America, inhabiting Central Argentina, Uruguay and south-eastern Brazil. It is known that in this species there is a divergence in morphological patterns (body size, coloration, allometry and fluctuating asymmetry indexes) among distant populations...
July 12, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28808542/the-relationship-between-male-sexual-signals-cognitive-performance-and-mating-success-in-stickleback-fish
#18
Ross Minter, Jason Keagy, Robin M Tinghitella
Cognitive ability varies dramatically among individuals, yet the manner in which this variation correlates with reproduction has rarely been investigated. Here, we ask (1) do male sexual signals reflect their cognitive ability, and (2) is cognitive ability associated with male mating success? Specifically, we presented threespine sticklebacks (Gasterosteus aculeatus) with a detour-reaching task to assess initial inhibitory control. Fish that performed better were those who solved the detour-reaching task, solved it faster, and required fewer attempts to solve...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28804092/diurnal-behavior-and-activity-budget-of-the-golden-crowned-flying-fox-acerodon-jubatus-in-the-subic-bay-forest-reserve-area-the-philippines
#19
Yupadee Hengjan, Keisuke Iida, Karla Cristine C Doysabas, Thanmaporn Phichitrasilp, Yasushige Ohmori, Eiichi Hondo
Acerodon jubatus (the Golden-Crowned flying fox) is an endemic species in the Philippines, which was suspected to be a host of the Reston strain of the Ebola virus. As nocturnal animals, the flying foxes spend daytime at the roosting site, which they use for self-maintenance and reproduction. To understand the variation in diurnal behavior and time allocation for various activities in the Golden-Crowned flying fox, we investigated their daytime behavior and activity budget using instantaneous scan sampling and all occurrence focal sampling...
August 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28797610/causes-and-consequences-of-behavioral-interference-between-species
#20
REVIEW
Gregory F Grether, Kathryn S Peiman, Joseph A Tobias, Beren W Robinson
Behavioral interference between species, such as territorial aggression, courtship, and mating, is widespread in animals. While aggressive and reproductive forms of interspecific interference have generally been studied separately, their many parallels and connections warrant a unified conceptual approach. Substantial evidence exists that aggressive and reproductive interference have pervasive effects on species coexistence, range limits, and evolutionary processes, including divergent and convergent forms of character displacement...
August 7, 2017: Trends in Ecology & Evolution
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