Decomposition Effects of Monochamus alternatus on Pinus yunnanensis

WANG Jian-min; CHEN Xiao-ming; LIU Juan; YANG Zi-xiang; DUAN Zhao-yao; HE Yu-hua; CHEN Fei

In order to explore the effects of Monochamus alternatus’ feeding on tree decomposition, the feeding amounts of larvae and adults M.alternatus were measured, the composition of phloem tissue of Pinus yunnanensis and the excrement of larvae M.alternatus were analyzed, and of the difference of decomposition abilities between M. alternatus and wood microorganisms were compared. The results indicated that the average tree biomass decomposed during larval phase of M. alternatus was 12.42 g (24.40 cm3), and 12.87 g (25.28 cm3) was decomposed in adulthood. The carbohydrate consuming was highly large for larva M.alternatus, so was the decomposition of fibre. The total sugar reduced by 83.58% and crude fibre decreased by 23.87% after feeding and digesting. One beetle could decompose 1.93g of crude fibre during larval phase, and the decomposition rate was 0.008 g·d-1. The results prove that M. alternatus, as an important pioneer of tree decomposing, can decompose trees. What's more, the progress that M. alternatus attacks sub-healthy trees will pave the way for microorganisms' infestation and decomposition; the beetle will quickens the decomposition and circulation of sub-healthy trees and plays an important role in material decomposition and circulation as decomposer in forest ecosystem.

1. Research Institute of Resource Insects, Chinese Academy of Forestry, Key Laboratory of Cultivation and Utilization of Resource Insects of State Forestry Administration, Kunming 650224, Yunnan, China

2. Yunnan Academy of Forestry, Kunming 650204, Yunnan, Chin

Received Date: 2012-08-12

Available Online: 2012-12-13

Abstract: In order to explore the effects of Monochamus alternatus’ feeding on tree decomposition, the feeding amounts of larvae and adults M.alternatus were measured, the composition of phloem tissue of Pinus yunnanensis and the excrement of larvae M.alternatus were analyzed, and of the difference of decomposition abilities between M. alternatus and wood microorganisms were compared. The results indicated that the average tree biomass decomposed during larval phase of M. alternatus was 12.42 g (24.40 cm3), and 12.87 g (25.28 cm3) was decomposed in adulthood. The carbohydrate consuming was highly large for larva M.alternatus, so was the decomposition of fibre. The total sugar reduced by 83.58% and crude fibre decreased by 23.87% after feeding and digesting. One beetle could decompose 1.93g of crude fibre during larval phase, and the decomposition rate was 0.008 g·d-1. The results prove that M. alternatus, as an important pioneer of tree decomposing, can decompose trees. What's more, the progress that M. alternatus attacks sub-healthy trees will pave the way for microorganisms' infestation and decomposition; the beetle will quickens the decomposition and circulation of sub-healthy trees and plays an important role in material decomposition and circulation as decomposer in forest ecosystem.

HTML

Reference (21)

[1]	尚玉昌.普通生态学(第三版)[M].北京:北京大学出版社,2010,420-424
[2]	Carpenter S E, Harmon M E, Ingham E R, et al. Early Patterns of Heterotroph Activity in Conifer Logs[J]. Proc Royal Soc Edinburgh, 1988, 94B, 33-43
[3]	Edmonds R L, Eglitis A. The role of the Douglas-fir beetle and wood borers in the decomposition of and nutrient release from Douglas-fir logs[J]. Can J For Res, 1989, 19, 853-859
[4]	Martikainen P, Siitonen J, Kaila L, et al. Bark beetles (Coleoptera, Scolytidae) and associated beetle species in mature managed and old-growth boreal forests in southern Finland[J]. Forest Ecology and Management, 1999, 116, 233-245
[5]	Schowalter T D, Caldwell B A, Carpenter S E, et al. Decomposition of fallen trees: effects of initial conditions and heterotroph colonization rates[M]// Singh K P,Singh l S. "Tropical Ecosystems: Ecology and Management", Wiley Eastern Ltd., New Delhi,1992, 373-383
[6]	曹月青,殷幼平,董亚敏,等.桑粒肩天牛肠道纤维素分解细菌的分离和鉴定[J].微生物学通报,2001,28(1):9-11
[7]	杨宝君,朱克恭,周元生.中国松材线虫病的流行与治理[M].北京:中国林业出版社,1995
[8]	朱克恭.松材线虫病研究综述[J].世界林业研究,1995,8(4):28-33
[9]	孙绪艮,崔为友.松材线虫病与松墨天牛研究概况[J].山东林业科技,2001(1):44-47
[10]	黄金水,何学友.我国松材线虫病研究现状及福建省防范对策的探讨[J].福建林业科技,2001,28(4):12-17
[11]	赵锦年,应杰.松墨天牛取食为害与松树枯死关系的研究[J].林业科学,1989,25(5):432-438
[12]	张世渊,来燕学,周成枚,等.松褐天牛成虫补充营养取食研究[J].浙江林业科技,1998,18(2):44-48
[13]	柴希民,蒋平,崔鹏程,等.松褐天牛成虫补充营养特性研究[J]. 浙江林业科技,2001,21(1):9-12
[14]	曾黄元,杜官本,王昌命,等.几种木材处理方式对云南松人工林的云南松材剖面密度影响的研究[J].西部林业科学,2006,35(3):68-71
[15]	刘晨娟,蔡皓,李庆,等.桑粒肩天牛肠道木质纤维素分解细菌的分离和鉴定[J].化学与生物工程,2010,27(7):66-68
[16]	Buswell J A, Odier E. Lignin biodegradation. CRC Crit[J]. Rev Biotechnol,1987,6:1-60
[17]	池玉杰,于钢.6种木材白腐菌对山杨材木质素分解能力的研究[J].林业科学,2002,38(5):115-120
[18]	程煜,陈灿,范海兰,等.不同坡向对木荷马尾松凋落物分解及养分释放速率的影响[J].中国农学通报,2011,27(31):6-17
[19]	吴志显.八种城市旱垂柳林木材腐朽菌分解能力的测定[J].中国森林病虫,2009,28(2):4-6
[20]	何伟,王中康,陈金华,等.Bt杀虫基因在桑粒肩天牛幼虫肠道内生优势菌中的转化研究[J].氨基酸和生物资源,2008,30(3):5-10
[21]	袁秀洁,唐秀光,李会平,等.几株桑天牛成虫肠道优势细菌的分离与鉴定[J].蚕业科学,2011,37(2):181-186

Decomposition Effects of Monochamus alternatus on Pinus yunnanensis

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views