中国腺水螨科一新纪录亚属拟腺水螨亚属及一新纪录种记述(水螨群,腺水螨总科,腺水螨科)

记述了采自中国腺水螨科1新纪录亚属,拟腺水螨亚属Pseudolebertia Thor,1897及1新纪录种,光足腺水螨Lebertia(Pseudolebertia)abseta Guo,Jin et Asadi,2006.检视标本存放于贵州大学昆虫研究所.     

中国急流水螨属二新纪录种(蜱螨亚纲,急流水螨科)

详细记述了急流水螨科Torrenticolidae急流水螨属Torrenticola 2新纪录种:半色急流水螨Torrenticola semicolor Viets,1977和长基急流水螨Torrenticola alargada Goldschmidt,2007。半色急流水螨若螨为首次记述,对2新纪录种雄螨射精复合体的描述亦为中国急流水螨的首次报道。     

中国刺触螨科一新纪录亚属及两新种记述(蜱螨亚纲,水螨群,刺触螨科)

记述了采自宁夏回族自治区泾源县野荷谷和新疆维吾尔族自治区吐鲁番市三堡乡的中国刺触螨科一新纪录亚属:杂刺触螨亚属Mixosperchon Viets,1926及两新种:凹须刺触螨Sperchon(Mixosperchon)curvipalpis Zhang et Jin,sp.nov.和吐鲁番刺触螨Sperchon(Mixosperchon)turfanensis Zhang et Jin,sp.nov..模式标本保存于贵州大学昆虫研究所.     

中国水螨一新纪录属及二新纪录种记述（蜱螨亚纲：水螨群：软滑水螨科）

记述软滑水螨科中国1新纪录属曲足螨属Pionacercus Piersig,1894及2中国新纪录种:阿那曲足螨 Pionacercus anadyrensis Tuzovskij,1990和列氏曲足螨 Pionacercus leuckartii Piersig,1894.     

中国卷甲螨科一新纪录属及三新纪录种(蜱螨亚纲,甲螨亚目,卷甲螨总科)

记述中国卷甲螨科Phthiracaridae1新纪录属,霍卷甲螨属HoplophthiracarusJacot,1933以及3新纪录种,坑霍卷甲螨H.foveolatusAoki,1980,伊利诺斯霍卷甲螨H.illinoisensis(Ewing,1909)和热带霍卷甲螨H.tropicusMondal et Kundu,1988,附详细描述及特征图。研究标本保存于中国科学院动物研究所国家动物博物馆。     

中国大翼甲螨科一新纪录属(蜱螨亚纲,甲螨亚目,大翼甲螨科)(英文)

记述了采自中国湖北的大翼甲螨科1新纪录属和1新纪录种:半大翼甲螨属Dimidiogalumna Engelbrecht,1972和东氏半大翼甲螨Dimidiogalumna azumai Aoki,1996,并制作了该属所有种的区别特征对照表。研究标本保存于贵州大学昆虫研究所。     

中国新纪录科条顿螨科及其一新种记述(蜱螨亚纲,水螨群,腺水螨总科)

记述了中国新纪录科条顿螨科Teutoniidae Koenike．1910条顿螨属Teutonia亚条顿螨亚属Subteutonia及其1新种多毛条顿螨Teutonia(Subteutonia)piloseta sp．nov．。新种须肢羽状栓毛及栓毛数量以及呈半包围状态的EpⅣ可以将之与其他亚条顿螨亚属种类区别。文中对其腺毛和眼毛的体位特征做了详细描述。     

中国新纪录普氏水螨亚科一新种：蜱螨亚纲：盾水螨科

本文报道质水螨科Ｋｙｄｙｐｈａｎｔｉｄａｅ中国一新纪录亚科暨属及其一新种,模式标本保存于贵州农学院昆虫所。     

中国软滑水螨一新纪录属及一新种记述(蜱螨亚纲,水螨群,软滑水螨科)

记述了采自黑龙江省伊春市呼兰河的中国软滑水螨一新纪录属:妖水螨属嘞Tiphys Koch,1836,及1新种:伊春妖水螨 Tiphys yichunensis sp.nov,.新种与分布于俄罗斯的近疤妖水螨Tiphys scaurellus Tuzovskij,1983近似,区别在于:新种P-Ⅳ背面起始端亚中部具1栓毛,近疤妖水螨缺失;新种足雄螨足Ⅲ爪特化,其中一爪为钩状简单爪,另一爪中、基部膨大,近疤妖水螨雄螨足Ⅲ爪均具腹小爪;新种雄螨Ⅳ.L4近筒状,近疤妖水螨雄螨Ⅳ.L-4从基部至端部逐渐膨大.     

阿土水螨亚科及一新种记述（蜱螨亚纲：阿土水螨科）

报道了湿螨总科Hygrobatoidea, 阿土水螨科Aturidae的中国一新纪录亚科暨属及其一新种,模式标本保存于贵州大学昆虫研究所。     

On the Synonymy of Coprophilus (Zonyptilus) pennifer (Motschulsky, 1845) (Coleoptera,Staphylinidae, Oxytelinae)

Entomological Review - The type material of several synonyms of Coprophilus (Zonyptilus) pennifer (Motschulsky, 1845) is revised. Both Coprophilus (Zonyptilus) striatipennis (Eppelsheim, 1894) and...     

Electronic structures of collagen model polymers: (Gly-Pro)n, (Gly-Hyp)n, (Ala-Pro)n, (Ala-Hyp)n, (Gly-Pro-Gly)n, (Gly-Hyp-Gly)n, (Gly-Pro-Pro)n, and (Gly-Pro-Hyp)n

In order to investigate the relationship existing between the electronic structures of collagen and its biochemical functions in vivo, the semiempirical CNDO/2 SCF MO calculations were carried out on several model polymers of collagen, (Gly-Pro)_n, (Gly-Hyp)_n, (Ala-Pro)_n, (Ala-Hyp)_n, (Gly-Pro-Gly)_n, (Gly-Hyp-Gly)_n, (Gly-Pro-Pro)_n and (Gly-Pro-Hyp)_n. Geometries of the skeleton of these polymers were assumed to be the same as those of poly(l-proline) I (cis) and II (trans) and the calculations were performed only on infinite polymers in a single chain. The results show that the cis form is always more stable than the trans form for all the polymers treated. This energy difference between the cis and trans forms depends, for example, on the kind of amino acid residue, Gly or Ala, but this could not be seen in the Pro or Hyp residue. The flexibility or mobility of the collagen structure was explained using the energy difference between the cis and trans forms of the polymers, i.e. the cis-trans conversion of the collagen was discussed in connection with the energy difference. The reason why the collagen has the constitution of (Gly-Pro-Hyp)_n is briefly discussed.     

First description of the female of Sarcophaga (Sarcorohdendorfia) gracilior (Chen, 1975) (Diptera,Sarcophagidae)

Sarcophaga (Sarcorohdendorfia) gracilior (Chen, 1975) is documented from specimens collected in Hubei Province, China, using morphological characters and wing interference patterns (WIPs). The female of S. (S.) gracilior is described for the first time, the male is redescribed, and both sexes are photographed. The distribution of the species is updated.     

Sensory Spots of Echinoderes capitatus (Zelinka, 1928) (Kinorhyncha,Cyclorhagida)

The sensory spots of Echinoderes capitatus from the Gulf of Trieste were examined by transmission and scanning electron microscopy. Their arrangement is bilaterally symmetrical and is species-specific. At the cuticle surface the sensory spot appears as a rounded to ovoid area of small cuticular papillae in which two pores open. The sensory organ consists of two different sensory cells, the monociliary receptor and the collar receptor, and one sheath cell. The course of the axons and their connections to the nervous system are described. A survey of collar receptors among invertebrates is given. A comparison of the sensory spots within Kinorhyncha and a comparison with the flosculi of Priapulida and the N-flosculi of Loricifera is made. A possible homology of these three structures is discussed.     

Spermiogenesis in Anaspides tasmaniae (Thomson) (Crustacea,Malacostraca, Syncarida)

Spermiogenesis of the syncarid Anaspides tasmaniae (subclass Eumalacostraca) was investigated by transmission electron microscopy. The spermatozoan of Anaspides is an ovoid cell with an acrosome covering the anterior pole and a lobulated nucleus and mitochondria occupying the rest of the cell. A long subacrosomal filament bypasses the nucleus and forms a spiral that supports a thin extension of the posterior cytoplasm, giving the spermatozoan a bell-shaped appearance. No flagellum is present at any stage. The immobile spermatozoans are embedded in a hard capsule, secreted by the cells of the wall of the vas deferens.     

Molecular-Mechanical studies of the mismatched base analogs of d(CGCGAATTCGCG)2:d(CGTGAATTCGCG)2, d(CGAGAATTCGCG)2, d(CGCGAATTCACG)2, d(CGCGAATTCTCG)2, and d(CGCAGAATTCGCG)·d(CGCGAATTCGCG)

Molecular-mechanical simulations have been carried out on “mismatched base” analogs of the DNA double-helical structure d(CGCGAATTCGCG)₂, in which the base pairs CG at the 3 and 10 positions have been replaced by CA, AG, TC, and TG base pairs, as well as an insertion analog in which an extra adenine has been incorporated into one strand of the above structure between bases 3 and 4. The results of these simulations (calculated relative stabilities, structures, and nmr ring-current shifts) have been compared with calorimetric and nmr data. The calculated relative stabilities of the double-helical parent dodecamer and the various “wobble” base pairs qualitatively correlate with the experimental melting temperatures. The base-pairing structure for the GT wobble pair is in agreement with that previously determined from nmr experiments. For the GA base pair, the structure with both bases anti has a slightly more favorable energy from base pairing and stacking than a structure with non-Watson-Crick H-bonding with adenine syn, in agreement with nmr experiments. The CA wobble base is calculated to favor an adenine 6NH₂ …? cytosine N3 H-bond over cytosine 4NH₂ …? adenine N1, again, in agreement with nmr experiments. There is no definitive experimental data on the TC base pair, but the existence of (somewhat long and weak) H-bonds involving cytosine 4NH₂ …? thymine 4CO and cytosine N3 …? thymine HN3 seems reasonable. We find a structure in which the extra adenine base of the insertion analogs sits “inside” the double helix.     

Potamonautes (Platypotamonautes) ecorssei (Marchand, 1902) (Decapoda, Potamonautidae) new to Ghana and northern Nigeria

The West African river crab, Potamonautes (Platypotamonautes) ecorssei (Marchand, 1902) is reported to occur for the first time in Ghana and for only the second time in Nigeria. Its geographical range is extended south to include the Volta river basin in Ghana, and east to northwest Nigeria, a distance of some 1200 km.     

Tonnacypris glacialis (Ostracoda, Cyprididae): taxonomic position, (palaeo-) ecology, and zoogeography

Abstract. The freshwater ostracod Tonnacypris glacialis (Sars, 1890) is reported from the European Pleistocene for the first time. The historical allocation of the species is discussed, and the species composition and characteristics of Tonnacypris Diebel & Pietrzeniuk (1975) and its phylozoogeography are considered. The significance of T. glacialis is reviewed, particularly from the viewpoint of the possible implications of parthenogenesis (and occasional-male production) for the Quaternary history of the genus, and for the use of the species in palaeoenvironmental reconstruction. It is suggested that the Pleistocene fossil occurrence of T. glacialis in modern temperature latitudes is a robust indicator of mean summer temperatures of 6°C.     

The Medusa of Velella velella (Linnaeus, 1758) (Hydrozoa, Chondrophorae)

A mature medusa of Velella velella (Linnaeus, 1758) is reportedfor the first time from the North Atlantic; previously adultmedusae were known only from the Mediterranean. This specimen,collected by SCUBA divers, is the largest specimen recordedto date. Distinctive features are: two opposite adaxial-axialpairs of perradial capitate tentacles; two marginal bulbs lackingtentacles; conical manubrium with 4 perradial longitudinal gonads;perradial exumbrellar cnidae tracts; cnidome of stenoteles andmacrobasic euryteles; and zooxanthellae within the subumbrella.Since this specimen was collected near the surface and has zooxanthellae,it is likely that V. velella medusae are epipelagic.     

Antidiuretic mechanism in Rhodnius prolixus (Stal, 1859) (Hemiptera, Reduviidae)

An antidiuretic mechanism is proposed for Rhodnius prolixus, whose activity is manifested when the diuretic phase has terminated and is maintained until the insect has fed again. Presumably this mechanism acts at the level of the proximal rectal sphincter and is inhibited by ingestion, mechanical distension of the gut and central disinhibition by decapitation. It is suggested that the antidiuretic activity is maintained by the nervous system and is modified when there is distention of the gut or when the nervous signal is interrupted by decapitation. It is demonstrated that the excretion of urine in R. prolixus is not controlled exclusively by the diuretic hormone, but rather that factors not linked to the haemolymph maintain the insects in a diuretic or nondiuretic state.