中国管螺属的研究(肺螺亚纲:柄眼目:烟管螺科:管螺亚科)

作者系统整理了中国管螺属Ｐｈａｅｄｕｓａ的标本和有关资料,已知我国管螺属计有２２种,其中发现有３新种,即峨嵋管螺Ｐｈａｅｄｕｓａ ｅｍｅｉｅｎｓｉｓ ｓｐ．ｎｏｖ．、丹巴管螺Ｐｈａｅｄｕｓａ ｄａｎｂａｅｎｓｉｓ ｓｐ．ｎｏｖ．和三门管螺Ｐｈａｅｄｕｓａ ｓａｎｍｅｎｅｎｓｉｓ ｓｐ．ｎｏｖ．。本文对旧有的种进行了整理和甄别,对新种的形态特征作了详细的描述,并与近似种进行了比较。     

中国烟管螺科二新种（肺螺亚纲：柄眼目）

本文记述采自陕西省陆生贝类二新种：陇县真管螺和镇安真管螺。文中对二新形态特征,栖息环境进行了描述,并对其相似种进行了分析和讨论。     

贵州洞穴陆生贝类一新种(肺螺亚纲,柄眼目,烟管螺科)

记述了贵州省洞穴烟管螺科真管螺属1新种,即荔波真管螺Euphaedusa libonensis sp.nov．,标本采自贵州省荔波县董背洞内。对新种进行了详细描述,并与近似种做了比较。模式标本保存在中国科学院动物研究所无脊椎动物标本馆。     

中国丽管螺属的研究(肺螺亚纲:柄眼目:烟管螺科:管螺亚科)

现已知我国烟管螺科丽管螺属共计１７种和亚种,主要分布于我国四川,云南,湖北,湖南,江西,浙江等处区,即分布于我国秦岭以南广东东洋界地区。作者在云南路南县石林地区采得丽管螺属一新种,即路南丽管螺,作者对我国已知的丽管螺属的种类进行了整理分析,对新种进行了描述。     

中国真管螺属一新种记述(肺螺亚纲,柄眼目,烟管螺科)

记述采自陕西省陆生贝类1新种.微小真管螺Euphaedusa minuta sp.nov., 文中对新种形态特征、栖息环境进行了描述,并对其相似种进行了分析和讨论.     

中国真管螺属一新种记述(肺螺亚纲,柄眼目,烟管螺科)

记述采自贵州省陆生贝类1新种,即白脉真管螺Euphaedusa leucophlebia sp.nov.,对新种形态特征、栖息环境进行了描述,并对其相似种进行了分析和讨论.     

中国拟管螺属一新种记述(肺螺亚纲,柄眼目,烟管螺科)

记述采自贵州省陆生贝类1新种,南江拟管螺Hemiphaedusa nanjiangensis sp.nov.,文中对新种形态特征、栖息环境进行了描述,并与其相似种进行了比较和讨论.     

甘肃管螺属一新种记述(肺螺亚纲,柄眼目,烟管螺科)

记述采自甘肃省文县陆生贝类1新种,文县管螺Phaedusa wenxianensis sp.nov.,对新种形态特征、栖息环境进行了描述,并与其相似种进行了分析和讨论。     

云南管螺属一新种记述(肺螺亚纲,柄眼目,烟管螺科)

记述采自云南省石林县陆生贝类1新种,即石林管螺Phaedusa shilinensis sp.nov.,文中对新种形态特征、栖息环境进行了描述,并对其相似种进行了分析和讨论。     

中国婴螺属一新种记述(腹足纲,肺螺亚纲,柄眼目,艾纳螺科)

记述采自甘肃省陆生贝类1新种,天水婴螺Pupinidius tianshuiensis sp.nov.,文中对新种形态特征、栖息环境进行了描述,并与其相似种进行了比较和讨论。     

Intramolecular higher order packing of parallel quadruplexes comprising a G:G:G:G tetrad and a G(:A):G(:A):G(:A):G heptad of GGA triplet repeat DNA

GGA triplet repeats are widely dispersed throughout eukaryotic genomes and are frequently located within biologically important regions such as gene regulatory regions and recombination hot spot sites. We determined the structure of d(GGA)4 (12-mer) under physiological conditions and founded the formation of an intramolecular parallel quadruplex for the first time. Later, a similar architecture to that of the intramolecular parallel quadruplex was found for a telomere DNA in the crystalline state. Here, we have determined the structure of d(GGA)8 (24-mer) under physiological conditions. Two intramolecular parallel quadruplexes comprising a G:G:G:G tetrad and a G(:A):G(:A):G(:A):G heptad are formed in d(GGA)8. These quadruplexes are packed in a tail-to-tail manner. This is the first demonstration of the intramolecular higher order packing of quadruplexes at atomic resolution. K+ ions, but not Na+ ones, are critically required for the formation of this unique structure. The elucidated structure suggests the mechanisms underlying the biological events related to the GGA triplet repeat. Furthermore, in the light of the structure, the mode of the higher order packing of the telomere DNA is discussed.     

Redfield revisited: variability of C:N:P in marine microalgae and its biochemical basis

Cytological events immediately following plasmogamy in Durvillaea potatorum are described. Eggs contain several types of cytoplasmic vesicle differing in size and appearance. Histochemical tests and measurements are used to characterise and distinguish different types of vesicle containing phenolic compounds, lipids and polysaccharides. Within 2 min of plasmogamy, small phenolic vesicles located just below the egg membrane undergo mass synchronised exocytosis. The contents of these vesicles are discharged as phenolic bodies on the outside of the membrane. Secretion of phenolic bodies precedes secretion of the primary zygote wall by several minutes. Limited secretion of phenolics also occurs in unfertilised eggs. Peripheral phenolic vesicles are distinguishable from physodes, which also contain phenolic compounds but which are significantly larger and tend to be localised around the egg nucleus. The possible functional significance of the phenolic bodies is discussed. Coated pits and vesicles are common in zygotes, and their presence is evidence for endocytosis.     

Morphology of Urospora chiridotae (Sporozoa: Gregarinomorpha: Eugregarinida) from sea cucumber Chiridota laevis (Echinodermata: Holothuroidea: Apoda)

Several morphological forms (morphotypes) of Urospora chiridotae gamontes are found in White Sea holothuroid Chiridota laevis. All these morphotypes are differed by localization in the body of host, form and cytological features. The gregarines are situated in several host biotopes, such as blood vessels, intestine and mesenteries. In the blood vessels elongate skittle-like cells supplied with long thin cytopillia are observed. On the external surface of the intestine spherical gregarines are found. These parasites commonly covered with one layer of coelomic epithelium's cells. In some holothuria intratissue spherical cells of parasites located in intestinal epithelium are presented. Both of these types of parasites lack cytopillia, and folds or ridges on its surface. On different mesenteries, connections between intestine and body wall, and also on intestine elongate ounce-shaped cells and gamontocysts are observed. These cells are situated on the apices of finger-like processes of the intestine and mesenteries surface. Ounce-shaped gregarines have cytopillia shorter than in skittle-like gregarines. The differences between morphotypes of Urospora chiridotae are probably caused by different environmental conditions. In the narrow rift of blood vessel elongate cells are developed. The cytopillia may serve for making more or less wide space around gregarines, which is necessary for food uptake. Spherical cells surrounded by host's cells and have the form typical for tissue parasites. In the wide coelomic cavity where convection of liquid proceeds better than in blood vessel, ounce-shaped gregarines with short cytopillia are developed. We found only typical for Urospora chiridotae ovoid oocysts with dissimilar ends, anterior collar and spine-like posterior end. Thus, the all above-mentioned morphotypes undoubtedly belong to the same species. The relationships between defense host cells and the different morphotypes of trophozoites are variable.     

Hormone interactions and regulation of PsPK2::GUS compared with DR5::GUS and PID::GUS in Arabidopsis thaliana

The putative pea PINOID homolog, PsPK2, is expressed in all growing plant parts and is positively regulated by auxin, gibberellin, and cytokinin. Here, we studied hormonal regulation of PsPK2::GUS expression compared with DR5::GUS and PID::GUS in Arabidopsis. PsPK2::GUS, DR5::GUS, and PID::GUS expression in Arabidopsis shoots is mainly localized in the stipules, hydathodes, veins, developing leaves, and cotyledons. Unlike DR5::GUS, PsPK2::GUS, and PID::GUS are weakly expressed in root tips. Both DR5::GUS and PsPK2::GUS are induced by different auxins and are more sensitive to methyl indole acetic acid, 4-chloro-indole acetic acid, and α-naphthalene acetic acid than others. GA(3) has no significant effect on GUS activity in DR5::GUS-transformed seedlings compared to the control, but induction by auxin and gibberellin in combination is synergistic. Cytokinin increases auxin transport in Arabidopsis seedlings. Auxin, gibberellin, and cytokinin all increase GUS activity in shoots of PsPK2::GUS transformed plants compared to the control. However, only auxin and gibberellin increase GUS activity in PID::GUS shoots. In conclusion, auxin, gibberellin, and cytokinin positively regulate PsPK2 expression in shoots, but not in roots. Auxin and gibberellin also upregulate AtPIN1 and LEAFY expression, which is similar to PsPIN1 and Uni in pea. With minor exceptions, the orthologous genes from both species are regulated similarly.     

Biogeography of the wax scales (Insecta: Hemiptera: Coccidae: Ceroplastinae)

The modern and native distributions of wax scales are documented and an area cladogram including seventy species is presented. Wax scales are distributed worldwide, but most species are native to either South America or Africa. Their native distribution pattern is discussed in relation to their host-plant specificity and to the dispersal and vicariance theories of biogeography. The vicariance theory is preferred, because the pattern can be explained satisfactorily by plate tectonics but not by dispersal from a centre of origin. The wax scale group probably originated in the combined South American–African continent at least 97 million yr ago.     

Thermoluminescence: experimental

Thermoluminesence measurements are useful for the study of Photosystem II electron transport in intact leaves, in algal and cyanobacterial cells, as well as in isolated membrane complexes. Here an overview of the experimental approaches is provided. In the present review, instruments and the experimental procedures for measuring thermoluminescence emission from photosynthetic systems of various origins are summarized and discussed. Major pitfalls frequently encountered in measurements with isolated membranes, suspensions of intact organisms or solid leaf samples are highlighted. Analytical and numeric methods for the analysis of measured thermoluminescence curves are also discussed.     

The ecology and biology of Southeast Asian false spider crabs (Crustacea: Decapoda: Brachyura: Hymenosomatidae)

The false spider crabs of the family Hymenosomatidae are one of the most poorly known group of brachyuran crabs in Southeast Asia. This is largely attributed to their small size and cryptic behaviour. Despite the many studies of decapods in Southeast Asia, only eleven species of hymenosomatids are known. Of these, two genera and six species were only described in the last two years. From Singapore the largest number of species (five) has been reported probably because it has been the best explored, while from Thailand three species and Peninsular Malaysia two species are known. There are no published records of hymenosomatids from Borneo or Java. The hymenosomatid fauna is perhaps best known in Australia and New Zealand. It is anticipated that when proper collections are made and studies implemented, the Southeast Asian hymenosomatid fauna will prove to be more diverse than what has been reported. The ecology of the Southeast Asian species is reviewed, especially in the view that two species are completely freshwater, one of which is a troglobite. Most species are littoral or sublittoral in habit and very sensitive to human activities (e.g. pollution).     

The leaf-beetle genus Microdonacia Blackburn (Coleoptera: Chrysomelidae: Galerucinae): revision and systematic placement

Abstract. The genus Microdonacia Blackburn is revised and its systematic position considered. Ten species are treated, seven of which are new ( bidentata, eucryphiae, grevitteae, incurva, octodentata, pilosa, pomaderris ), and lectotypes are designated for two species. Four of the new species are placed in Tantawangalo subgen.n. Microdonacia is compared with the genera Cassena Weise, Licyllus Jacoby and Orthaltica Crotch. The sister-group for Microdonacia is identified as Orthaltica and these genera are placed incertae sedis in the Galerucinae, as used in the sense of Crowson (1967). The proposed phylogeny of the species is illustrated on a cladogram.     

新米虾属的修订（甲壳亚门：十足目：匙指虾科）

本文回顾了新米虾Ｎｅｏｃａｒｉｄｉｎａ的研究历史及存在争议,根据形态,生活史,生态和地理分布四个主要性状的综合考虑,提出确认新米虾属Ｎｅｏｃａｒｉｄｉｎａ,修订了属征,并整理了该属现有种类,修订后的Ｎｅｏｃａｒｉｄｉｎａ共１９种类及亚种,分布于中国,日本,朝鲜及越南,文中记述６新种及新亚种,Ｎ．ｚｈａｎｇｊｉａｊｉｅｎｓｉｓｓｐ．ｎｏｖ．Ｎ．ｅｕｓｐｉｎｏｓａｓｐ．ｎｏｖ．ｎ。ｄｅｎｔｉｃｕｌａｔ