Integrative taxonomic revision of Dendrobaena veneta (Rosa, 1886) sensu lato with description of a new species and resurrection of Dendrobaena succinta (Rosa, 1905) (Megadrili: Lumbricidae)

Dendrobaena veneta is one of the most widely used compost worms now distributed all over Europe and has been described under several synonymous names. Besides the typical stripy red specimens, another form bearing pinkish pigmentation also exists, mostly found in natural habitats in the East Mediterranean. Here we provide the first integrative taxonomic analysis of D. veneta, including some closely related species. Both the morphological and molecular results highly support the resurrection of D. succinta, a former synonym of D. veneta. In addition, we describe a peculiar new species, D. karacadagi sp. n. from Anatolia, and prove the highly homoplasious character of the cross section of the longitudinal musculature.

urn:lsid:zoobank.org:pub:336D3F7A-AEA1-465B-9096-03070C761A6A     

两种群相互竞争具有脉冲预防接种的SIR传染病模型

研究了一类具有脉冲预防接种的两种群相互竞争S(易感染者)-I(感染者)-R(治愈者)传染病模型,讨论了平衡点的存在性和局部渐进稳定性,脉冲接种有效的预防种群内,及其竞争种群间传染病的传播和蔓延。该接种方法可以在珍稀物种中推广。     

生态营林桉树人工林林木生长动态分析

为阐明轮伐期内不同类型桉树(Eucalyptus spp.)人工混交林的生长动态特征及变化规律,选择于2012年在中国林业科学研究院热带林业实验中心青山实验场采用生态营林制度营造的桉树×降香黄檀混交林(Eucalyptus×Dalbergia odorifera,MED)、桉树×望天树混交林(Eucalyptus×Parashorea chinensis,MEP)、桉树×红锥混交林(Eucalyptus×Castanopsis hystrix,MEC)和桉树纯林(PEU)为研究对象,设置固定监测样地,基于桉树第一轮伐期内的3次林分调查(2014、2016、2018年),分析不同混交林桉树和珍贵树种的胸径、树高、单株材积和林分蓄积量动态变化特征。结果表明,监测期内,4种林分类型林木胸径、树高、单株材积和林分蓄积量均随林龄显著增加;混交林中降香黄檀、红锥及望天树均可显著促进桉树胸径、树高、单株材积及林分蓄积量的生长,促进作用大小表现为MED>MEC>MEP;不同混交类型中珍贵树种的胸径、树高、单株材积及林分蓄积量均表现为MEC>MEP>MED,林分总蓄积量表现为ME...     

高含硫气藏水平井硫的饱和度预测模型研究

为了对高含硫气藏水平井硫沉积进行准确地预测研究,在气藏硫沉积机理研究的基础上,考虑水平井不同的渗流阶段以及与压力相关的气体参数的变化,建立了相应的硫的饱和度预测模型。利用某高含硫气田一口水平井的数据进行实例分析,得到了如下结论:1对于水平井硫沉积可以只考虑靠近井地带的径向流阶段,当发生硫沉积导致气井产量下降时,一定要合理控制气井产量,若发生硫沉积堵塞,加注硫溶剂可以有效地解除近井地带的污染;2与直井相比,水平井硫沉积的影响因素还包括水平段长度以及储层的非均质性。在相同的产气量下,水平井水平段越长,硫沉积的速度就会越慢;储层非均质性越强,硫沉积越不容易发生。     

娇导蝽属及盲异蝽属新种记述(半翅目:异蝽科)

本文记述5个发现于我国的异蝽科新种及一个新组合，分隶于桥异蝽属UrostylisWest－wood（叉娇异蝽Urostylisfurca（Lin）（新组合）；猫儿山娇异蝽UrostrylismaoershanensisRen，sp．nov．（新种）；湖北娇异蝽UrostylishubeiensisRen，sp．nov．（新种））及盲异蝽属UrolabidaWestwood（保山盲异蝽UrolabidabaoshananaRen，sp．nov．（新种）；华夏盲异蝽UrolabidasinicaRenetLiu,sp.nov.（新种）；宫本盲异蝽UrolabidamiyamotolRen，sp．nov．（新种））计6种．并提出以下的异蝽科新异名关系：Urolabidanigromarginatus(Reuter,1881）（＝UrostylisguangdongensisChen，1994，syn.nov．）;UrochelasiamensisYang1938（＝UrochelalongmenensisChen，1994,syn．nov．）     

天女木兰群落物种多样性的研究

对分布于集安和通化地区的天女木兰群落的生长环境和群落特征进行了生态调查,统计了天女木兰群落的物种数量以及群落内木本植物和草本植物的物种多样性指数,为天女木兰的保育提供了基础资料.     

KD306型耐硫甲烷化催化剂本征动力学

采用等温积分反应器,测试了ＫＤ３０６型耐硫甲烷化催化剂的本征动力学,建立了幂函数动力学模型。检验表明：模型拟合良好,残差分布合理,参数回归显著,模型能真实反映ＫＤ３０６型耐硫甲烷化催化剂的反应特性。     

KD306耐硫甲烷化催化剂宏观动力学测试

以工业应用为目的，采用内循环无梯度反应器，测试了ＫＤ３０６耐硫甲烷化催化剂的宏观动力学，得到了幂函数动力学模型。该模型的统计检验表明结果是合理的，其残差亦符合均匀分布。出口关键组分的模型计算值与实验值相当吻合。该模型用于反应器模拟设计是可靠的。     

A case of biodiversity overestimation in the Balkan Belgrandiella A. J. Wagner, 1927 (Caenogastropoda: Hydrobiidae): molecular divergence not paralleled by high morphological variation

Belgrandiella A. J. Wagner, 1927 is a genus comprising minute snails with conic or turriform shells that are facultative stygobionts, inhabiting subterranean waters and springs. Few specimens or even empty shells of this taxon can be found, so the taxonomy is based mostly on the shell morphology and geographic distribution. Anatomy is known for a few taxa, and its usefulness is restricted. This, coupled with a popular idea that isolation is the first factor shaping divergence and speciation of the spring/cave fauna, resulted in dozens of nominal species of Belgrandiella, known from shells at a given locality. Herein we present shells, anatomy and four molecular markers (nuclear H3, 18S and 28S and mitochondrial cytochrome oxidase subunit I) in Belgrandiella from 16 localities in Slovenia, northern Croatia, and Bosnia and Herzegovina. Five sites are type localities of Boleana umbilicata, Belgrandiella kusceri, Belgrandiella krupensis, Belgrandiella zermanica and Belgrandiella robusta, respectively. Considering the shell and geographic distribution, we have determined B. cf. robusta Belgrandiella cf. croatica, Belgrandiella cf. fontinalis, Belgrandiella cf. kuesteri, Belgrandiella cf. pageti and Belgrandiella cf. koprivnensis The shells of all, as well as penes and female reproductive organs of two putative, species have been illustrated. Molecular analysis indicates four distinct clades, most probably of species rank for B. kusceri, B. cf. kuesteri, B. cf. fontinalis and B. cf. koprivnensis. Four nominal species (B. krupensis, B. robusta, B. umbilicata and B. zermanica) and one genus (Boleana) must be synonymised with Belgrandiella kusceri, and there are no more than four valid, biological species in the studied Belgrandiella. The molecular divergence is completely unmirrored by high morphological variability. Hence the level of endemism is markedly overestimated in these snails.     

Revision of the subfamily Cardiochilinae Ashmead, 1900 (Hymenoptera: Braconidae) in Egypt,with new records and a new species

In the present study, the subfamily Cardiochilinae (Hymenoptera: Braconidae) is revised. This study is based on specimens deposited in Egyptian repositories. Many of them were collected during Priesner’s trips to Gebel Elba (extreme south-west of Egypt). The subfamily Cardiochilinae is represented in Egypt by 11 species in three genera, Bohayella Belokobylskij, 1987 (one species), Cardiochiles Nees, 1819 (three species) and Schoenlandella Cameron, 1905 (seven species). The cardiochiline species C. pseudofallax Telenga, 1955 and S. deserta (Telenga, 1955) are recorded here as new records in the fauna of Egypt. The females of previously known male C. weidholzi Fischer, 1958, S. acrenulata (Fischer, 1958) and S. obscuriceps (Fischer, 1958) as well as the male of the previously known female S. glabra (Fischer, 1958) are described. Schoenlandella pseudoglabra sp. nov. is also described and illustrated.

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