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The major dominant species of predatory enemies were Erigonidium graminicola and Theridion octomaculatum and their individuals were 81.4 percent of the total predatory enemy individuals of the community.1.2 Spatial patterns and their dynamics of major dominant predatory enemies ofarthropod communityThe research results showed that Pieris rapae distributed mainly on heart leaves and back of inner leaves of cabbage plants, Plutella xylostella distributed mainly on the back of cabbage leaves and Lipaphis erysimi distributed widely in cabbage plants. Among the major dominant species of predatory enemies, Sitticus sinensis distributed mainly on the front of leaves of cabbage plants in spring cabbage fields, and Misumenopos tricuspidata and Propylaea japonica distributed widely in cabbage plants.
在捕食性天敌中蜘蛛10种,捕食性昆虫3种,主要优势种为草间小黑蛛、八斑球腹蛛,其数量占捕食性天敌总数量的81.4%。1.2节肢动物群落主要优势种的空间格局及其动态研究结果表明,害虫优势种菜青虫主要分布于甘蓝心叶和甘蓝叶反面,小菜蛾主要集中分布在甘蓝叶的反面,而菜蚜在甘蓝植株内的分布较广;春甘蓝田捕食性天敌优势种中华跃蛛在外层叶正面分布较集中,三突花蛛与瓢虫类在甘蓝植株内的分布较广。
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The temporal and spatial niche breadth value of Propylaea japonica was maximum, and the temporal niche overlap value of Theridion octomaculatum between dominant predatory enemies and Aphis gossypii was maximum and the spatial niche overlap of Pardosa T-insignita was maximum.
对淮北棉田节肢动物优势种群组成和时空生态位进行分析,结果表明:棉蚜、烟粉虱、棉叶螨、棉盲蝽、四点亮腹蛛、龟纹瓢虫、T-纹豹蛛、草间小黑蛛、八斑球腹蛛、华姬猎蝽、小花蝽和青翅隐翅虫为优势种群;时间和空间生态位宽度值都是以龟纹瓢虫最大,捕食性天敌优势种群与棉蚜时间生态位重叠值以八斑球腹蛛最大,空间生态位重叠值以T-纹豹蛛最大。
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Black widow spider:黑寡妇球腹蛛
garage n. 车库 | black widow spider 黑寡妇球腹蛛 | pick up 拿起,捡起
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ArAneA ventriCosA:大腹蛛
球腹蛛 Theridium tepidAriorum | 大腹蛛 ArAneA ventriCosA | 络新妇 NeplzilA elAvAtA
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Sheet-web spiders,family Linyphiidae ):片网蜘蛛,皿蛛科
普通球蛛,园蛛科( Common orb spiders,family Araneidae ) | 片网蜘蛛,皿蛛科( Sheet-web spiders,family Linyphiidae ) | 盘网蜘蛛 球腹蛛科( Cobweb spiders,family Theridiidae )
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Lycosidae:狼蛛科
蜘蛛 是捕食性天敌中的主要类群,在生产上重要的种类多属微蛛科(Erigonidae)、狼蛛科 (Lycosidae)、球腹珠科(Therdiidae)、蟹蛛科 (Tomisidae)和圆蛛科(Araneidae).
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Theridiidae:球腹蛛科
蜘蛛目(Araneida)球腹蛛科(Theridiidae)寇蛛属(Latrodectus)蜘蛛的通称,尤指毒蜘蛛(L. mactans). 其他分布於世界各地的种名各异,如寡妇蛛(widow spider)、黑寡妇蛛(black widow spidar)等等. 已知约6种,均有毒,但其螫咬很少致人死命.
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Cobweb spiders,family Theridiidae ):盘网蜘蛛 球腹蛛科
片网蜘蛛,皿蛛科( Sheet-web spiders,family Linyphiidae ) | 盘网蜘蛛 球腹蛛科( Cobweb spiders,family Theridiidae ) | 长颚蜘蛛,肖蛸科( Long-jawed spiders,family Tetragnathidae )
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Theridion sp:球腹蛛
八斑球腹蛛 Theridion octomaculatum | 球腹蛛 Theridion sp. | 短胸长腹蟹蛛 Tibellus oblongus
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Theridion octomaculatum:八斑球腹蛛
纵条蝇狮 Marpissa magistar | 八斑球腹蛛 Theridion octomaculatum | 球腹蛛 Theridion sp.
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Uloborus:涡 蛛
狼 蛛 LyCosA nArbonnensis | 涡 蛛 Uloborus | 球腹蛛 Theridium tepidAriorum
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Long-jawed spiders,family Tetragnathidae ):长颚蜘蛛,肖蛸科
盘网蜘蛛 球腹蛛科( Cobweb spiders,family Theridiidae ) | 长颚蜘蛛,肖蛸科( Long-jawed spiders,family Tetragnathidae ) | 射线蜘蛛,锥形网蛛科( Ray spiders,family Theridiosomatidae )