Luquillo Understory invertebrates Sticky Trap Samples

Sticky traps, designed to resemble resin globules that eventually could become amber, were coated with adhesive and placed on lower tree boles or on logs at one non-gap site at the LEF for 5 days during June 2004, January and July 2005, July 2006 and July 2007 (total 35 samples). Samples were dominated by Diptera (89% of specimens), with phorids representing 60%, mycetophilids 16%, dolichopodids 4%, sarcophagids 2%, cecidomyiids and chironomids 1% each, and other Diptera 5%. Other collected taxa included Hymenoptera (6% of specimens), with chalcidoid wasps 4%, little fire ant (Wasmania auropunctata) 1% and other Hymenoptera 1%; Coleoptera (2% of specimens), with curculionids 1% and other Coleoptera 1%; and a variety of other insects, spiders and mites representing 3%. Two small Anolis lizards and a small Eleutherodactylus frog also were captured. Arthropod composition in sticky traps from the LEF and in Dominican amber were similar. Support for this work was provided by grants BSR-8811902, DEB-9411973, DEB-9705814 , DEB-0080538, DEB-0218039 , DEB-0620910 , DEB-1239764, DEB-1546686, and DEB-1831952 from the National Science Foundation to the University of Puerto Rico as part of the Luquillo Long-Term Ecological Research Program. Additional support provided by the University of Puerto Rico and the International Institute of Tropical Forestry, USDA Forest Service.

本研究使用的粘性陷阱（sticky traps）被设计为模拟最终可形成琥珀的树脂球，表面涂覆粘合剂，放置于卢奎洛实验林（Luquillo Experimental Forest，缩写LEF）一处非林隙区域的树干下部或伐倒木上。采样时段涵盖2004年6月、2005年1月与7月、2006年7月及2007年7月，单次放置时长均为5天，累计获取有效样本35份。样本类群以双翅目（Diptera）占绝对优势，占总标本量的89%；其中蚤蝇科（Phoridae）占60%，蕈蚊科（Mycetophilidae）占16%，长足虻科（Dolichopodidae）占4%，肉蝇科（Sarcophagidae）占2%，瘿蚊科（Cecidomyiidae）与摇蚊科（Chironomidae）各占1%，其余双翅目类群占5%。其余采集到的类群包括膜翅目（Hymenoptera），占总标本量的6%；其中小蜂总科（Chalcidoidea）昆虫占4%，小火蚁（Wasmania auropunctata）占1%，其余膜翅目类群占1%；鞘翅目（Coleoptera）占2%，其中象甲科（Curculionidae）占1%，其余鞘翅目类群占1%；其他各类昆虫、蜘蛛与螨类合计占3%。此外还捕获到2只小型安乐蜥属（Anolis）蜥蜴及1只小型卵齿蟾属（Eleutherodactylus）蛙类。LEF站点粘性陷阱采集到的节肢动物类群组成，与多米尼加琥珀中的节肢动物组成具有相似性。本研究得到美国国家科学基金会（National Science Foundation）面向波多黎各大学的多项研究基金资助，资助编号包括BSR-8811902、DEB-9411973、DEB-9705814、DEB-0080538、DEB-0218039、DEB-0620910、DEB-1239764、DEB-1546686及DEB-1831952，相关资助为卢奎洛长期生态研究计划的组成部分。额外资助来自波多黎各大学及美国农业部林务局热带林业国际研究所。