Welcome to Chinese Journal of Biological Control,Today is

Chinese Journal of Biological Control ›› 2021, Vol. 37 ›› Issue (4): 701-708.DOI: 10.16409/j.cnki.2095-039x.2021.03.019

• RESEARCH REPORTS • Previous Articles     Next Articles

Vertical Distribution of Wood-boring Pests and Its Parasitic Wasp in Pinus tabulaeformis

YANG Liyuan1, LIU Renjun2, ZHAO Xiaofei3, HUANG Shi3, HUA Jie1, SUN Shouhui1   

  1. 1. College of Forestry, Shenyang Agricultural University, Shenyang 110866, China;
    2. Shenyang Forest Resources Monitoring Center, Shenyang 110136, China;
    3. Shenyang Dongling Park, Shenyang 110161, China
  • Received:2020-12-01 Published:2021-09-18

Abstract: Pinus tabulaeformis Carr. is the main afforestation and ornamental species in Shenyang area. To clarify the occurrence of wood-boring pests in P. tabulaeformis at the first occurrence site of Pine Wilt Disease (PWD) in Shenyang and the parasitic natural enemy species, we investigated the species, emergence period, and vertical distribution of wood-boring pests and their parasitic natural enemies in P. tabulaeformis using the wood segmental dissection and cage feeding methods, from March 2019 to October 2019. In March, larvae of three longicorn species were found in the dissected quarantine timber of PWD. From April to October, eleven species from four families (subfamilies) wood-boring pests, and parasitic wasp adults were collected continuously from the insect cages. The dominant wood-boring pests species ranked as Cryphalus fulvus Niisima, Tomicus minor (Hartig), Rhagium inquisitor (Linnaeus), Arhopalus rusticus (Linnaeus), Acanthocinus griseus (Fabricius), Hylastes plumbeus Blandford, and Asemum striatum (Linnaeus). The dominant parasitic wasp species ranked as Atanycolus initiator (Fabricius), Spathius sp., Rhyssa jozana Matsumura, and Pseudorhyssa nigricornis (Ratzeburg). Dissection tests of quarantine timber revealed that population size of R. inquisitor and A. griseus larvae did not differ in different parts of the trunk. Arhopalus rusticus larvae were of the highest population size in the bottom part and were more than those in the middle and upper part. Cryphalus fulvus dominated in the middle and upper part of P. tabulaeformis trunk, T. minor was the most at the trunk height of 2.0-4.0 m, A. griseus and R. inquisitor were of relatively uniform population size at different trunk heights, A. rusticus dominated in the bottom part of the trunk, A. initiator was the dominant species, especially at the trunk height of 2.0-4.0 m, Spathius sp. distributed more at the trunk height of 4.0-10.0 m. The results specified in this paper are of great significance for the control of local pests and further development and utilization of insect natural enemy resources.

Key words: Pinus tabulaeformis, wood-boring pest, parasitic wasp, emergence period, vertical distribution

CLC Number: