书讯

欢迎订阅《英语科技论文撰写与投稿(第二版)》本书是科技论文写作与投稿的指南读物,书中全方位地分析和展示了科技论文写作的技巧与诀窍。从论文选题、科技写作的道德规范、拟投稿期刊的选择等方面阐述了科技论文写作前的准备工作,通过大量的实例分析阐述了论文题名和摘要撰写中应遵循的基本原则,分别从写作技巧、时态和语态的使用等角度     

欢迎订阅《英语科技论文撰写与投稿(第二版)》

<正>本书是科技论文写作与投稿的指南读物,书中全方位地分析和展示了科技论文写作的技巧与诀窍。从论文选题、科技写作的道德规范、拟投稿期刊的选择等方面阐述了科技论文写作前的准备工作,通过大量的实例分析阐述了论文题名和摘要撰写中应遵循的基本原则,分别从写作技巧、时态和语态的使用等角度介绍了科技论文正文的撰写,举例说明了致谢及图表制作的注意事项,总结了各主要参考文献体例的特点、格式及相关著录规范。     

欢迎订阅《英语科技论文撰写与投稿(第二版)》

本书是科技论文写作与投稿的指南读物,书中全方位地分析和展示了科技论文写作的技巧与诀窍。从论文选题、科技写作的道德规范、拟投稿期刊的选择等方面阐述了科技论文写作前的准备工作,通过大量的实例分析阐述了论文题名和摘要撰写中应遵循的基本原则,分别从写作技巧、     

2011年度“生物工程学报优秀论文奖”

为了鼓励优秀作者,从2011年起,对前3年(2008年度内)发表在本刊的论文按照论文的创新性(审稿专家的评审意见)和读者的关注度(中国知网cnki的被引频次和下载量)进行综合评估,评选出10篇优秀论文,授予"2011年度生物工程学报优秀论文奖",获奖作者将获得编辑部颁发的证书,同时再向本刊投稿时还可享受一定的优惠:凡在投稿中有优秀论文作者署名的文章,1)在下一年度免收一篇投稿的审理费;2)在下一年度录用的优秀论文可优先发表。     

2011年度“生物工程学报优秀论文奖”

为了鼓励优秀作者,从2011年起,对前3年(2008年度内)发表在本刊的论文按照论文的创新性(审稿专家的评审意见)和读者的关注度(中国知网cnki的被引频次和下载量)进行综合评估,评选出10篇优秀论文,授予"2011年度生物工程学报优秀论文奖",获奖作者将获得编辑部颁发的证书,同时再向本刊投稿时还可享受一定的优惠:凡在投稿中有优秀论文作者署名的文章,1)在下一年度免收一篇投稿的审理费;2)在下一年度录用的优秀论文可优先发表。     

关于《环境昆虫学报》开通优先数字出版服务的通知

<正>为了提高论文时效性,吸引更多优质稿件,《环境昆虫学报》于2015年5月开通优先数字出版服务。优先数字出版是以印刷版期刊录用稿件为出版内容,在印刷期刊出版前,以数字出版的形式在网络上优先发表文献。该服务缩短出版周期,快速实现论文按篇即时在线出版,切实缩短论文刊发时滞,争取科研成果的首发权。鉴于此,本刊将针对创新性的优质论文开辟优先数字出版通道,欢迎广大读者、作者踊跃投稿并向编辑部提出优先出版申请,其中具有创新性的论文、     

《广西植物》加入中国知网《中国学术期刊(网络版)》(CAJ-N)录用定稿网络首发

正为了以规范的网络期刊出版方式更快更好地确立作者的科研成果首发权,全面提高学术论文的传播效率和利用价值,我刊现已加入中国知网学术论文录用定稿网络首发平台,通过《中国学术期刊(网络版)》(CAJ-N)正式出版我刊网络版。从2017年10月15日起,凡经我刊审定录用的稿件(录用定稿),作者签署论文版权转让协议(在本刊投稿网站提交)后,均将首先在网络版上首发,后视编排情况发布排版     

生物工程学报2013年度优秀论文奖

<正>为了鼓励优秀作者,对2010年度内发表在《生物工程学报》的论文按照论文的创新性(审稿专家的评审意见)和读者的关注度(中国知网CNKI的被引频次和下载量)进行综合评估,评选出20篇优秀论文,授予"2013年度生物工程学报优秀论文奖",获奖作者将获得编辑部颁发的证书,同时再向本刊投稿时还可享受一定的优惠:凡有优秀论文作者署名的投稿,录用后可享优先发表和稿酬增加的优惠     

生物工程学报2013年度优秀论文奖

<正>为了鼓励优秀作者,对2010年度内发表在《生物工程学报》的论文按照论文的创新性(审稿专家的评审意见)和读者的关注度(中国知网CNKI的被引频次和下载量)进行综合评估,评选出20篇优秀论文,授予"2013年度生物工程学报优秀论文奖",获奖作者将获得编辑部颁发的证书,同时再向本刊投稿时还可享受一定的优惠:凡有优秀论文作者署名的投稿,录用后可享优先发表和稿酬增加的优惠。     

生物工程学报2013年度优秀论文奖

<正>为了鼓励优秀作者,对2010年度内发表在《生物工程学报》的论文按照论文的创新性(审稿专家的评审意见)和读者的关注度(中国知网CNKI的被引频次和下载量)进行综合评估,评选出20篇优秀论文,授予"2013年度生物工程学报优秀论文奖",获奖作者将获得编辑部颁发的证书,同时再向本刊投稿时还可享受一定的优惠:凡有优秀论文作者署名的投稿,录用后可享优先发表和稿酬增加的优惠。     

A general model of the public goods dilemma

An individually costly act that benefits all group members is a public good. Natural selection favours individual contribution to public goods only when some benefit to the individual offsets the cost of contribution. Problems of sex ratio, parasite virulence, microbial metabolism, punishment of noncooperators, and nearly all aspects of sociality have been analysed as public goods shaped by kin and group selection. Here, I develop two general aspects of the public goods problem that have received relatively little attention. First, variation in individual resources favours selfish individuals to vary their allocation to public goods. Those individuals better endowed contribute their excess resources to public benefit, whereas those individuals with fewer resources contribute less to the public good. Thus, purely selfish behaviour causes individuals to stratify into upper classes that contribute greatly to public benefit and social cohesion and to lower classes that contribute little to the public good. Second, if group success absolutely requires production of the public good, then the pressure favouring production is relatively high. By contrast, if group success depends weakly on the public good, then the pressure favouring production is relatively weak. Stated in this way, it is obvious that the role of baseline success is important. However, discussions of public goods problems sometimes fail to emphasize this point sufficiently. The models here suggest simple tests for the roles of resource variation and baseline success. Given the widespread importance of public goods, better models and tests would greatly deepen our understanding of many processes in biology and sociality.     

Natural selection and density-dependent population growth

Natural selection was studied in the context of density-dependent population growth using a single locus, continuous time model for the rates of change of population size and allele frequency. The maximization principle of density-dependent selection was applied to a class of fitness expressions with explicit recruitment and mortality terms. Three general results were obtained: First, at low population densities, the genetic basis of selection is the difference between the mean recruitment rate and the mean mortality rate. Second, at densities much higher than the equilibrium population size, selection is expected to act to minimize the mean mortality rate. Third, as the population approaches its equilibrium density, selection is predicted to maximize the ratio of the mean recruitment rate to the mean mortality rate.     

Heritability of preferences for multiple cues of mate quality in humans

Human mate preferences have received a great deal of attention in recent decades because of their centrality to sexual selection, which is thought to play a substantial role in human evolution. Most of this attention has been on universal aspects of mate preferences, but variation between individuals is less understood. In particular, the relative contribution of genetic and environmental influences to variation in mate preferences is key to sexual selection models but has barely been investigated in humans, and results have been mixed in other species. Here, we used data from over 4000 mostly female twins who ranked the importance of 13 key traits in a potential partner. We used the classical twin design to partition variation in these preferences into that due to genes, family environment, and residual factors. In women, there was significant variability in the broad-sense heritability of individual trait preferences, with physical attractiveness the most heritable (29%) and housekeeping ability the least (5%). Over all the trait preferences combined, broad-sense heritabilities were highly significant in women and marginally significant in men, accounting for 20% and 19% of the variation, respectively; family environmental influences were much smaller. Heritability was a little higher in reproductive aged than in nonreproductive aged women, but the difference was not significant.     

Amatoxins,Phallotoxins, Phallolysin,and Antamanide: The Biologically Active Components of Poisonous Amanita Mushroom

Multiple mechanisms for feedback control of cholesterol synthesis converge on the rate-limiting enzyme in the pathway, 3-hydroxy-3-methylglutaryl coenzyme A reductase. This complex feedback regulatory system is mediated by sterol and nonsterol metabolites of mevalonate, the immediate product of reductase activity. One mechanism for feedback control of reductase involves rapid degradation of the enzyme from membranes of the endoplasmic reticulum (ER). This degradation results from the accumulation of sterols in ER membranes, which triggers binding of reductase to ER membrane proteins called Insig-1 and Insig-2. Insig binding leads to the recruitment of a membrane-associated ubiquitin ligase called gp78 that initiates ubiquitination of reductase. Ubiquitinated reductase then becomes extracted from ER membranes and is delivered to cytosolic 26S proteasomes through an unknown mechanism that is mediated by the gp78-associated ATPase Valosin-containing protein/p97 and appears to be augmented by nonsterol isoprenoids. Here, we will highlight several advances that have led to the current view of mechanisms for sterol-accelerated, ER-associated degradation of reductase. In addition, we will discuss potential mechanisms for other aspects of the pathway such as selection of reductase for gp78-mediated ubiquitination, extraction of the ubiquitinated enzyme from ER membranes, and the contribution of Insig-mediated degradation to overall regulation of reductase in whole animals.     

Broad-sense sexual selection, sex gene pool evolution, and speciation.

Studies of sexual selection have traditionally focused on explaining the extreme sexual dimorphism in male secondary sexual traits and elaborate mating behaviors displayed by males during courtship. In recent years, two aspects of sexual selection have received considerable attention in the literature: an extension of the sexual selection concept to other traits (i.e., postcopulatory behaviors, external and internal genital morphology, gametes, molecules), and alternative mechanistic explanations of the sexual selection process (i.e., coevolutionary runaway, good-genes, sexual conflicts). This article focuses on the need for an extension of sexual selection as a mechanism of change for courtship and (or) mating male characters (i.e., narrow-sense sexual selection) to all components of sexuality not necessarily related to courtship or mating (i.e., broad-sense sexual selection). We bring together evidence from a wide variety of organisms to show that sex-related genes evolve at a fast rate, and discuss the potential role of broad-sense sexual selection as an alternative to models that limit speciation to strict demographic conditions or treat it simply as an epiphenomenon of adaptive evolution.     

Practical aspects of genome-wide association interaction analysis

Large-scale epistasis studies can give new clues to system-level genetic mechanisms and a better understanding of the underlying biology of human complex disease traits. Though many novel methods have been proposed to carry out such studies, so far only a few of them have demonstrated replicable results. Here, we propose a minimal protocol for genome-wide association interaction (GWAI) analysis to identify gene–gene interactions from large-scale genomic data. The different steps of the developed protocol are discussed and motivated, and encompass interaction screening in a hypothesis-free and hypothesis-driven manner. In particular, we examine a wide range of aspects related to epistasis discovery in the context of complex traits in humans, hereby giving practical recommendations for data quality control, variant selection or prioritization strategies and analytic tools, replication and meta-analysis, biological validation of statistical findings and other related aspects. The minimal protocol provides guidelines and attention points for anyone involved in GWAI analysis and aims to enhance the biological relevance of GWAI findings. At the same time, the protocol improves a better assessment of strengths and weaknesses of published GWAI methodologies.     

The role of a midbrain network in competitive stimulus selection

A midbrain network interacts with the well-known frontoparietal forebrain network to select stimuli for gaze and spatial attention. The midbrain network, containing the superior colliculus (SC; optic tectum, OT, in non-mammalian vertebrates) and the isthmic nuclei, helps evaluate the relative priorities of competing stimuli and encodes them in a topographic map of space. Behavioral experiments in monkeys demonstrate an essential contribution of the SC to stimulus selection when the relative priorities of competing stimuli are similar. Neurophysiological results from the owl OT demonstrate a neural correlate of this essential contribution of the SC/OT. The multi-layered, spatiotopic organization of the midbrain network lends itself to the analysis and modeling of the mechanisms underlying stimulus selection for gaze and spatial attention.     

Effects of the topographic niche differentiation on the coexistence of major and minor species in a species-rich temperate forest

Topographic niche differentiation (TND) is believed to facilitate the coexistence of tree species, but its effects are not well established for minor species or for life stages beyond recruitment. In this study, the effects of topography (slope inclination and topographic configuration) on the demographic parameters (mortality, diameter growth rate and recruitment rate) of both major and minor species in a species-rich temperate forest were examined using a mixed-model approach. The model selection analysis detected interspecies difference in the response of recruitment rate to topographic configuration. However, mortality and diameter growth rate of stems with DBH ≥ 5 cm did not show any species-specific response to two topographic parameters. The recruitment rate of major species tended to be higher under topographic conditions where many stems of the species already existed, suggesting significant habitat segregation. No such correlation was found for minor species. These results suggest TND has a limited effect on habitat segregation among species, and that other mechanisms also contributed to coexistence, especially when considering minor species.     

Recruitment and diversification of an ecdysozoan family of neuropeptide hormones for black widow spider venom expression

Venoms have attracted enormous attention because of their potent physiological effects and dynamic evolution, including the convergent recruitment of homologous genes for venom expression. Here we provide novel evidence for the recruitment of genes from the Crustacean Hyperglycemic Hormone (CHH) and arthropod Ion Transport Peptide (ITP) superfamily for venom expression in black widow spiders. We characterized latrodectin peptides from venom gland cDNAs from the Western black widow spider (Latrodectus hesperus), the brown widow (Latrodectus geometricus) and cupboard spider (Steatoda grossa). Phylogenetic analyses of these sequences with homologs from other spider, scorpion and wasp venom cDNAs, as well as CHH/ITP neuropeptides, show latrodectins as derived members of the CHH/ITP superfamily. These analyses suggest that CHH/ITP homologs are more widespread in spider venoms, and were recruited for venom expression in two additional arthropod lineages. We also found that the latrodectin 2 gene and nearly all CHH/ITP genes include a phase 2 intron in the same position, supporting latrodectin's placement within the CHH/ITP superfamily. Evolutionary analyses of latrodectins suggest episodes of positive selection along some sequence lineages, and positive and purifying selection on specific codons, supporting its functional importance in widow venom. We consider how this improved understanding of latrodectin evolution informs functional hypotheses regarding its role in black widow venom as well as its potential convergent recruitment for venom expression across arthropods.