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.本研究采用的粘性诱捕器（sticky traps）模拟了最终可形成琥珀的树脂珠形态，表面涂布粘合剂，于2004年6月、2005年1月与7月、2006年7月及2007年7月，布设在美国卢奎略实验林（Luquillo Experimental Forest, LEF）一处无林窗样地的树干下部或倒木上，单次布设时长为5天，累计获取有效样本35份。样本以双翅目（Diptera）类群为主，占总标本量的89%，其中蚤蝇科（Phoridae）占比60%，蕈蚊科（Mycetophilidae）占16%，长足虻科（Dolichopodidae）占4%，麻蝇科（Sarcophagidae）占2%，瘿蚊科（Cecidomyiidae）与摇蚊科（Chironomidae）各占1%，其余双翅目类群占5%。采集到的其他类群包括膜翅目（Hymenoptera，占总标本量的6%），其中小蜂总科（Chalcidoidea）寄生蜂占4%，小火蚁（Wasmania auropunctata）占1%，其余膜翅目类群占1%；鞘翅目（Coleoptera，占总标本量的2%），其中象甲科（Curculionidae）占1%，其余鞘翅目类群占1%；以及各类其他昆虫、蜘蛛与螨类，合计占3%。此外还捕获了2只安乐蜥属（Anolis）小型蜥蜴及1只卵齿蟾属（Eleutherodactylus）小型蛙类。卢奎略实验林粘性诱捕器采集的节肢动物组成，与多米尼加琥珀中的节肢动物类群组成具有较高相似性。本研究得到美国国家科学基金会（National Science Foundation）拨付给波多黎各大学的多项研究基金支持，基金编号分别为BSR-8811902、DEB-9411973、DEB-9705814、DEB-0080538、DEB-0218039、DEB-0620910、DEB-1239764、DEB-1546686及DEB-1831952，相关经费属于卢奎略长期生态研究项目（Luquillo Long-Term Ecological Research Program）的一部分。本研究同时获得波多黎各大学以及美国农业部林务局热带林业国际研究所（International Institute of Tropical Forestry, USDA Forest Service）的额外资助。