The Qinling Mountains, known for their rich vegetation and diverse pollinating insects, have seen a significant decline in bee species richness and abundance over recent decades, largely due to the introduction and sp...The Qinling Mountains, known for their rich vegetation and diverse pollinating insects, have seen a significant decline in bee species richness and abundance over recent decades, largely due to the introduction and spread of Apis mellifera. This decline has caused cascading effects on the region's community structure and ecosystem stability. To improve the protection of native bees in the natural and agricultural landscape of the Qinling Mountains and its surrounding areas, we investigated 33 sampling sites within three habitats: forest, forest-agriculture ecotones, and farmland. Using a generalized linear mixing model, t-test, and other data analysis methods, we explored the impact of Apis mellifera on local pollinator bee richness, abundance, and the pollination network in different habitats in these regional areas. The results show that(1)Apis mellifera significantly negatively affects the abundance and richness of wild pollinator bees,while Apis cerana abundance is also affected by beekeeping conditions.(2)There are significant negative effects of Apis mellifera on the community structure of pollinator bees in the Qinling Mountains and its surrounding areas: the Shannon-Wiener diversity index, Pielou evenness index, and Margalef richness index of bee communities at sites with Apis mellifera influence were significantly lower than those at sites without Apis mellifera influence.(3)The underlying driver of this effect is the monopolization of flowering resources by Apis mellifera. This species tends to visit flowering plants with large nectar sources, which constitute a significant portion of the local plant community. By maintaining a dominant role in the bee-plant pollination network, Apis mellifera competitively displaces native pollinator bees, reducing their access to floral resources. This ultimately leads to a reduction in local bee-plant interactions, decreasing the complexity and stability of the pollination network. These findings highlight the need for targeted conservation efforts to protect native pollinator species and maintain the ecological balance in the Qinling Mountains.展开更多
Two new species of Mukariini,Tiaobeinia coarseata sp.nov.from Shaanxi and Tiaobeinia yuani sp.nov.from Gansu,are described.Detailed morphological descriptions and illustrations of these new species are given.A checkli...Two new species of Mukariini,Tiaobeinia coarseata sp.nov.from Shaanxi and Tiaobeinia yuani sp.nov.from Gansu,are described.Detailed morphological descriptions and illustrations of these new species are given.A checklist of all known species in this tribe from China is provided and a key is proposed for all species of Tiaobeinia.展开更多
新蝎蛉属Neopanorpa van der Weele,1909是典型的东洋区昆虫类群,在中国西南地区有着最高的多样性。本文描述新蝎蛉属2新种:棒状新蝎蛉Neopanorpa leptorhapis sp.nov.采自云南,弯月新蝎蛉Neopanorpa lunulivalva sp.nov.采自广西。Neop...新蝎蛉属Neopanorpa van der Weele,1909是典型的东洋区昆虫类群,在中国西南地区有着最高的多样性。本文描述新蝎蛉属2新种:棒状新蝎蛉Neopanorpa leptorhapis sp.nov.采自云南,弯月新蝎蛉Neopanorpa lunulivalva sp.nov.采自广西。Neopanorpa lindsleyi Bicha,2015原始记载于越南,本文首次报导于广西。展开更多
Two new species of Dicerapanorpa Zhong & Hua, 2013 are described from Sichuan, China.Dicerapanorpa yijunae sp. nov. is characterized by basal branches of paramere incurved basally and parallel distally, mesal and ...Two new species of Dicerapanorpa Zhong & Hua, 2013 are described from Sichuan, China.Dicerapanorpa yijunae sp. nov. is characterized by basal branches of paramere incurved basally and parallel distally, mesal and lateral branches greatly incurved distally, reaching the base of gonostylus in male, and main plate broadened mesally, nearly as long as posterior arm in female. Dicerapanorpa luojishana sp. nov. is distinguished by basal and mesal branches of paramere nearly reaching median tooth of gonostylus, lateral branch reaching basal tooth, and aedeagus exceeding apex of gonocoxite in male, and main plate of medigynium pear-shaped, twice as long as the posterior arm in female. The new discovery enriches the diversity of Dicerapanorpa and increases the species number to fifteen.展开更多
基金funded by the National Key R&D Program of China (2022YFE0115200)the Biodiversity Survey and the Assessment Project of the Ministry of Ecology and Environment, China (2019HJ2096001006)the National Animal Collection Resource Center, China。
文摘The Qinling Mountains, known for their rich vegetation and diverse pollinating insects, have seen a significant decline in bee species richness and abundance over recent decades, largely due to the introduction and spread of Apis mellifera. This decline has caused cascading effects on the region's community structure and ecosystem stability. To improve the protection of native bees in the natural and agricultural landscape of the Qinling Mountains and its surrounding areas, we investigated 33 sampling sites within three habitats: forest, forest-agriculture ecotones, and farmland. Using a generalized linear mixing model, t-test, and other data analysis methods, we explored the impact of Apis mellifera on local pollinator bee richness, abundance, and the pollination network in different habitats in these regional areas. The results show that(1)Apis mellifera significantly negatively affects the abundance and richness of wild pollinator bees,while Apis cerana abundance is also affected by beekeeping conditions.(2)There are significant negative effects of Apis mellifera on the community structure of pollinator bees in the Qinling Mountains and its surrounding areas: the Shannon-Wiener diversity index, Pielou evenness index, and Margalef richness index of bee communities at sites with Apis mellifera influence were significantly lower than those at sites without Apis mellifera influence.(3)The underlying driver of this effect is the monopolization of flowering resources by Apis mellifera. This species tends to visit flowering plants with large nectar sources, which constitute a significant portion of the local plant community. By maintaining a dominant role in the bee-plant pollination network, Apis mellifera competitively displaces native pollinator bees, reducing their access to floral resources. This ultimately leads to a reduction in local bee-plant interactions, decreasing the complexity and stability of the pollination network. These findings highlight the need for targeted conservation efforts to protect native pollinator species and maintain the ecological balance in the Qinling Mountains.
基金supported by the National Natural Science Foundation of China(3207047932270497)National key Research and Development Program"Intergovernmental Cooperation on International Science and Technology Innovation"Special Project(2022YFE0115200)。
文摘Two new species of Mukariini,Tiaobeinia coarseata sp.nov.from Shaanxi and Tiaobeinia yuani sp.nov.from Gansu,are described.Detailed morphological descriptions and illustrations of these new species are given.A checklist of all known species in this tribe from China is provided and a key is proposed for all species of Tiaobeinia.
基金supported by the National Natural Science Foundation of China (31872278,31672341)。
文摘新蝎蛉属Neopanorpa van der Weele,1909是典型的东洋区昆虫类群,在中国西南地区有着最高的多样性。本文描述新蝎蛉属2新种:棒状新蝎蛉Neopanorpa leptorhapis sp.nov.采自云南,弯月新蝎蛉Neopanorpa lunulivalva sp.nov.采自广西。Neopanorpa lindsleyi Bicha,2015原始记载于越南,本文首次报导于广西。
基金supported by the National Animal Collection Resource Center of China and the National Natural Science Foundation of China(U1603106,31420103911)the Shaanxi Provincial Scientific Foundation(2023-JC-YB-174)the Experimental Technology Research Innovation Project of NWAFU(SY20210206)。
基金supported by the National Natural Science Foundation of China(31672341)
文摘Two new species of Dicerapanorpa Zhong & Hua, 2013 are described from Sichuan, China.Dicerapanorpa yijunae sp. nov. is characterized by basal branches of paramere incurved basally and parallel distally, mesal and lateral branches greatly incurved distally, reaching the base of gonostylus in male, and main plate broadened mesally, nearly as long as posterior arm in female. Dicerapanorpa luojishana sp. nov. is distinguished by basal and mesal branches of paramere nearly reaching median tooth of gonostylus, lateral branch reaching basal tooth, and aedeagus exceeding apex of gonocoxite in male, and main plate of medigynium pear-shaped, twice as long as the posterior arm in female. The new discovery enriches the diversity of Dicerapanorpa and increases the species number to fifteen.
