有机锡对海洋微藻的生理效应 Ⅰ.三苯基锡和三丁基锡对光合色素含量的影响

于1991年4月－1992年五月，以金藻和扁藻为材料，用室内一次培养法研究三苯基锡（TPTC）和三丁基锡（TBTC）化合物对光合色素含量的影响。结果表明，两种有机锡对两种藻均有影响，在0．2—0．4μg／L的浓度时有轻微毒性；浓度大于0．5μg／L时，能使光合色素明显减少。对于两种藻叶绿素a72hEC50影响结果：TBTC和TPTC对金藻的均为0．59μg／L；对扁藻的，TBTC是0．87μg／L，而TPTC本出现半效应浓度。对于两种藻的类胡萝卜素72hEC50影响结果：金藻，TPTC是0．57μg／L，TBTC是0．49μg／L；扁藻，TBTC是0．89μg／L，TPTC也未出现半效应浓度。认为，两种有机锡对光合色素有明显的破坏作用。     

厦门岛东南海滩自由生活海洋线虫一新种

本文报道厦门岛东南海滩自由生活海洋线虫单宫线虫目希阿利线虫科新种-厦门吻腔线虫（Rhynchomema xiamenensis sp.nov)。对新种形态特征进行了详细描述并与近似种作了比较。     

除草剂San9785在高EPA后棘藻品系筛选中的应用

后棘藻(Ellipsoidion sp.)是一种高脂海洋微藻,采用微生物筛选平板的方法,利用多不饱和脂肪酸EPA合成的阻断剂——除草剂San9785对紫外线诱变的后棘藻细胞进行了高EPA个体的筛选,气相分析结果显示,在检测的8株筛选品系中,5株EPA含量高于出发藻种,平均提高了121.6%,另3株EPA含量低于出发藻种,平均降低的量为12.6%,EPA含量最高的品系达到总脂肪酸的26.22%,比出发藻种提高了212%.提示除草剂San9785可以作为一种高效筛选压力,选育多不饱和脂肪酸含量丰富的微藻品系.     

Gymnospermes s.l. du Jurassique supérieur du massif Manamana,Sud-Ouest de Madagascar: une nouvelle paléoflore gondwanienne

Fossil plants from Upper Jurassic sediments belonging to the Gymnosperms s.l. have been studied in the Manamana massif from the southwestern part of Madagascar. The levels are Upper Oxfordian in age on the basis of the palaeontological content, especially with ammonites. The majority of fossil plants are devoided of organic matter but in some cases collodion peels have been made to present epidermal characters. The cuticle of Brachyphyllum madagascariense nov. sp. has been observed with scanning electron microscope (SEM). This new flora is constituted by Pteridospermales and Coniferales. Fragmentary fronds of Pteridospermales have been collected of Pachypteris sp. A and Pachypteris sp. B. Some epidermal characters are described. Coniferales are represented by leafy stems. The diagnosis of Brachyphyllum madagascariense nov. sp. is given with morphological and epidermal characters. Others conifers have been determined: Brachyphyllum sp. A, Brachyphyllum sp. B, Elatocladus sp., Cupressinocladus sp., Cyparissidium sp.. Araucarites sp. remains are probably isolated fertile scales of a female cone. Complete cones of Conites sp. are also present.Comparisons of the systematic composition are made with other Gondwana floras of the same age from Antarctica, South America, Madagascar, India, South Africa, New Zealand and Australia. This flora shows xerophytic adaptations. With the Filicales described by Appert (1973a, b) from the same localities, it is now the most diverse flora from the Upper Jurassic of Madagascar, despite the lack of Cycadales, Bennettitales and Angiosperms.     

The first trichomyiine from Burmese Cretaceous amber (Diptera,Psychodidae, Trichomyiinae)

A new genus and species of Trichomyiinae (Axenotrichomyia boisteli) is described herein from Burmese Upper Cretaceous (Cenomanian) amber. This new taxon is characterized, illustrated, and its taxonomic position is discussed. This discovery sheds new light for the understanding of the palaeobiodiversity of this group.     

The first Mesozoic pleasing lacewing (Neuroptera: Dilaridae)

Cretanallachius magnificus gen. et sp. nov., first Mesozoic and earliest record of the Dilaridae (Neuroptera), is described from the Cretaceous Burmese amber. Its putative closest relative is the recent subfamily Nallachiinae known by the sole genus Nallachius.     

两株极地真菌次级代谢产物的研究

采用硅胶柱层析、凝胶柱层析和HPLC等色谱技术,对极地真菌Articulospora sp.Z1-1和Penicilliumsp.S-1-10的发酵液提取物进行分离纯化,共得到9个化合物,通过理化性质及波谱学分析并与相关文献比对,确定化合物结构为3,7-二羟基-9-甲氧基-1-甲基-苯并[c]色烯-6-酮(1),1,4-二羟基甲苯(2),间羟基苄醇(3),对羟基苯乙醇(4),邻苯二甲酸二丁酯(5),1,7-二羟基-3-羟甲基-8-甲氧基-二苯并[b,e]氧杂卓-13,14-二酮(6),邻苯二甲酸二(2-乙基己)酯(7),4-十三烷基-苯甲醛(8)和(Z)-7-十四烯酸(9)。其中,化合物1—6首次从Articulospora sp.属真菌中获得,化合物8为新天然产物。化合物1和4被证明具有抑制稻瘟霉的作用,化合物2有较好的抗菌和细胞毒活性,化合物3有较强的抗氧化活性。     

The latest record of the extinct subfamily Eoptychopterinae (Diptera: Ptychopteridae) from Upper Cretaceous amber of North Carolina

A new genus and species of female phantom midge Neuseptychoptera carolinensis gen. et sp. nov. in the fossil subfamily Eoptychopterinae is described and illustrated; this ptychopterid is from Upper Cretaceous (Campanian) amber of North Carolina. This is the first member of Eoptychopterinae from North America and the first found in Campanian age amber. We propose to treat the extinct subfamily Eoptychopterininae Lukashevich, 1995, as a junior synonym of the subfamily Eoptychopterinae Handlirsch, 1906, syn. nov. The elongated mouthparts of the new species have broad labella, and these are functionally interpreted as feeders for honeydew, fermenting plant juices, and nectar rather than for biting.     

高效液相色谱法测定罗非鱼中孔雀石绿残留量的不确定度

依据JJF10591—2012《测量不确定度评定与表示》,分析高效液相色谱法测定罗非鱼中孔雀石绿残留量不确定度的来源,从影响不确定度的标准溶液配制us、样品前处理up和仪器测量uu等3个主要因素,对不确定度各个分量进行计算和合成,得出罗非鱼中孔雀石绿的扩展不确定度U=088（k=2）。     

山西天镇晚白垩世蜥脚类恐龙一新科

发现于山西省天镇县上白垩统灰泉堡组中的一种新的大型（长约２０ｍ,高近５ｍ蜥脚类恐龙－不寻常华北龙（新属新种）Ｈｕａｂｅｉｓａｕｒｕｓ ａｌｌｃｔｕｓ（ｇｅｎ．ｅｔ ｓｐ．ｎｏｖ．）以其较粗壮的钉状牙齿,齿冠长与齿根长之比为３：１,颈椎椎体较长,神经棘分叉,背椎神经棘较高、不分叉,尾椎双凹型,神经弧位于椎体的前半部,神经棘和脉弧远端均不分叉,股骨直长,窄而扁,胫骨、腓骨长而扁平等特征明显地不同于与其