关于费尔干蚌Ferganoconcha

在追溯费尔干蚌属与科的最初定义及过去学者对此属归科的不同意见后,从我国标本所获对此属铰齿构造了解,说明此属为蚌类化石。认为额尔古纳蚌Arguniella。也是蚌类化石,作者过去将它与费尔干蚌属合并是错误的,同时肯定了原苏联马廷生（G.G.Martinson）对费尔干蚌铰板与铰齿合并的解释。费尔干蚌属的区别特征,在其扁而无壳顶脊的外壳与狭细片状齿无铰板的发育。文末简述了陈金华1999新的不同意见,并作了评论。     

Factors influencing age related dispersal of the nymphal OdonatesIschnura barberi (Currie),Pachydiplax longipennis (Burm.) andErythemis simplicicollis (Say)

Size related spatial patterns were observed in naiads of the three dominant odonate taxa in a man-made marsh. These patterns were correlated with various physical and chemical parameters, the vegetation gradient, and prey availability using linear and curvilinear regressions.Ischnura barberi andPachydiplax longipennis naiads increased linearly in head capsule widths from the marsh center to the marsh edge. Increasing naiad size correlated with changes in vegetation. Additionally, the spatial patterning ofPachydiplax longipennis was correlated with decreasing submerged plant surface area as naiad size increased. The head capsule width ofErythemis simplicicollis increased from the marsh center to the marsh edge and then continued to increase towards the marsh center. This complex dispersal pattern did not correlate with any of the measured physical or chemical parameters or the vegetation gradient. However, the dispersal pattern ofErythemis simplicicollis correlated with increased in consumable prey densities along the migratory path. No correlation existed between consumable prey and the dispersal pattern ofIschnura barberi orPachydiplax longipennis.     

六种食用蜻蜓稚虫营养成分分析和评价

以云南省和贵州省采集到的6种常见食用蜻蜓为材料,采用凯氏定氮法、索氏提取法、蒽酮比色法、氨基酸自动分析法、原子吸收法、电感耦合等离子质谱法(ICP-MS)和高效液相色谱法(HPLC)法分别测定了6种蜻蜓稚虫的基本营养组成、氨基酸、矿质元素和脂溶性维生素的含量,评价其营养价值。结果显示,6种蜻蜓稚虫平均水分含量为81.17%,干基蛋白质、脂肪、糖和灰分的平均含量分别为65.62%,9.80%、3.01%和5.47%,氨基酸组成合理,符合WHO/FAO提出的优质蛋白条件,主要限制性氨基酸为Met+Cys和Trp,与全鸡蛋蛋白质贴近度为0.59~0.66。富含各类人体必需矿质元素,尤其是Ca和Se,脂溶性维生素中分别测定出0.252~3.859mg·kg~(-1)的α-生育酚,具有高蛋白、低脂肪、氨基酸组成合理和富含矿质元素的特点,营养价值较高,具有开发利用前景,但需注意部分种类体内检测出重金属元素超标。