白星花金龟资源分析.doc

Analysis and evaluation of resource components of Potosia brevitaris Yu-Sheng LIU1 * Cheng Yang2 ( Institute of Environmental Biology and Insect Resources，College of Plant Protection，Shandong Agriculture University，Taian 271018，China)Abstract：The nutritional composition of Potosia brevitaris adult and larvae were analyzed。For the larvae， Protein，fat and amino acid were respectively 67.1%，3.8% and 52.01% of dry samples. Furthermore，sampled insects contained 17 essential amino acids，including 7 human essential amino acids，and essential amino acids comprised 33.92% of the total amino acids. The ratio of essential to nonessential amino acids was 51.32% . MET was the first limiting amino acid in larvae protein. The organic matter, nitrogen, P2O5 andK2O rate content were 29.6%, 1.25%, 1.98%, 0.74% in the Worm dung dry matter . For the adult，Protein, fat and amino acid were respectively 67.1%，3.8% an Furthermore，sampled insects contained 1 essential amino acids，including human essential amino acids，and essential amino acids comprised % of the total amino acids. The ratio of essential to nonessential amino acids was 51.32% . MET was the first limiting amino acid in adult protein. Based on these data，the potential for utilization of Potosia brevitaris was evaluated.Potosia brevitaris，adult，larvae ，resource components，value 白星花金龟Potosia brevitaris Lewis又名白纹铜花金龟白星花潜。中国的东北、华北、华东、华中等地区体型中等，体长17～24毫米，体宽9～12毫米。1年1代,以幼虫在土中越冬。成虫5月份出现7～8月为发生盛期。有假死性。主要为害玉米（乳期）、大麻等植物的花，或为害有伤痕的或过熟的桃和苹果，吸取榆、栎类多种树木伤口处的汁液。成虫产卵于含腐殖质多的土中或堆肥和腐物堆中。幼虫（蛴螬）头小体肥大，多以腐败物为食，常见于堆肥和腐烂秸秆堆中，有时亦见于鸡窝中。以背着地，足朝上行进。干燥幼虫入药，有破瘀、止痛、散风平喘、明目去翳等功能。1 材料与方法 1. 1 试验材料 从泰山南麓的桃花峪、樱桃园山庄、天外村、红门等地的果园及林场采集的白星花金龟成虫，从山东农业大学昆虫养殖场采集的白星花金龟三龄老熟幼虫，将其速冻致死，然后置于55 ℃ 恒温箱中烘至恒重，用样品粉碎机磨成粉状供分析用。 测定方法 1.2.1 粗蛋白测定 采用凯氏半微量定氮法( 参照GB∕T 5009.5-2003) ，称取2g试样，移入干燥的100mL定氮瓶中，在催化剂存在下，用硫酸破坏有机物，使含氮物转化成硫酸铵，再加入氢氧化钠并蒸馏使氨逸出，用硼酸吸收后，用盐酸滴定测出氮含量，乘以氮与蛋白质的换算系数6.25 计算粗蛋白质量。 1.2.2 粗脂肪测定 资助项目：农田循环生产关键技术研究与集成示范（2007BAD89B00） *通讯作者，E-mail:ysl@sdau.edu.c