scholarly journals Structural dynamics in the host-parasitoid system of the pine needle gall midge (Thecodiplosis japonensis) during invasion

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3610 ◽  
Author(s):  
Won Il Choi ◽  
Mun-Jang Jeon ◽  
Young-Seuk Park
Keyword(s):  
Environmental Factors ◽  
Structural Dynamics ◽  
Gall Midge ◽  
Invasion History ◽  
Pine Needle ◽  
Structure And Dynamics ◽  
Important Pest ◽  
History Of ◽  
Pine Needle Gall Midge ◽  
New Habitats

The structural dynamics of host–parasitoid populations play a key role in the mechanism of natural community development with invasive species. Species invading new habitats experience coevolution with their newly acquired natural enemies, and their population dynamics are driven by a complex interaction between biological and environmental factors. We examined the biological and environmental factors which potentially influence a community of parasitoids throughout the 25-year invasion history of the pine needle gall midge (PNGM), Thecodiplosis japonensis, an important pest of pines in eastern Asia. We found that differences in establishment sequence and competitive ability among the parasitoids attacking this species determined the parasitoid community’s structure and dynamics. In particular, the timing for the initial establishment of the host–parasitoid association, incomplete superiority in competition among parasitoids, and indirect competition by a combination of the parasitoids were important factors for determining community’s structure and dynamics. Finally, the history of change in the community composition could be explained by the phenology differences in its member species, mediated by environmental factors.

Identification of AFLP markers linked to a resistance gene against pine needle gall midge in Japanese black pine

2003 ◽  
Vol 108 (6) ◽  
pp. 1177-1181 ◽  
Author(s):  
E. Hayashi ◽  
T. Kondo ◽  
K. Terada ◽  
N. Kuramoto ◽  
S. Kawasaki
Keyword(s):  
Resistance Gene ◽  
Gall Midge ◽  
Aflp Markers ◽  
Black Pine ◽  
Pine Needle ◽  
Japanese Black Pine ◽  
Pine Needle Gall Midge

scholarly journals OUTBREAKS HISTORY AND PRESENT STATUS OF THE PINE NEEDLE GALL MIDGE IN KOREA

ESAKIA ◽  
10.5109/2478 ◽  
1985 ◽  
Vol 23 ◽  
pp. 115-118
Author(s):  
Kr-Nam Park ◽  
Tadashi Miura ◽  
Yoshihiro Hirashima
Keyword(s):  
Present Status ◽  
Gall Midge ◽  
Pine Needle ◽  
Pine Needle Gall Midge

scholarly journals ANTS COLLECTED IN PINE FORESTS INFESTED BY THE PINE NEEDLE GALL MIDGE IN KOREA (HYMENOPTERA, FORMICIDAE)

ESAKIA ◽  
10.5109/2483 ◽  
1985 ◽  
Vol 23 ◽  
pp. 159-163
Author(s):  
Kazuo Ogata ◽  
Yoshihiro Hirashima ◽  
Tadashi Miura ◽  
Yasuo Maeta ◽  
Yano Koji ◽  
...  
Keyword(s):  
Gall Midge ◽  
Pine Forests ◽  
Pine Needle ◽  
Pine Needle Gall Midge

scholarly journals Movement Behavior of the Pine Needle Gall Midge (Diptera: Cecidomyiidae)

2020 ◽  
Vol 20 (5) ◽  
Author(s):  
Huanxiu Liu ◽  
Chunhua Duan ◽  
Yukun Qi ◽  
Lili Ren ◽  
Haiwei Wu
Keyword(s):  
Gall Midge ◽  
Flight Time ◽  
Flight Distance ◽  
Movement Behavior ◽  
Pine Needle ◽  
Ambient Temperatures ◽  
Tethered Flight ◽  
Dispersal Potential ◽  
Active Dispersal ◽  
Pine Needle Gall Midge

Abstract The movement behavior of the pine needle gall midge (Thecodiplosis japonensis Uchida Et Inouye (Diptera: Cecidomyiidae)), an invasive species in China, was determined by using a tethered flight technique and digital videography in the laboratory. The flight distance, duration, and speed of females were compared at different ages (2–10 h) and ambient temperatures (17, 21, 26, and 30°C). Female flight distance and duration at 26°C were significantly greater than those at 17°C and 21°C. The age of T. japonensis did not significantly affect the three flight characteristics. For females at 2–10 h of age at 26°C and 70% RH, the maximum flight distance was 667.59 m; the longest flight time was 6,222.34 s; and the fastest flight speed was 0.44 m·s−1. For larvae wetted with water, the highest jump was 5.7 cm; the longest jump was 9.6 cm; and the greatest distance moved in 5 min was 27.13 cm, which showed that the active dispersal potential of larvae was very low.

Endophytic fungi associated with healthy pine needles and needles infested by the pine needle gall midge, Thecodiplosis japonensis

1995 ◽  
Vol 73 (3) ◽  
pp. 384-390 ◽  
Author(s):  
Kunihiko Hata ◽  
Kazuyoshi Futai
Keyword(s):  
Endophytic Fungi ◽  
Pinus Densiflora ◽  
Gall Midge ◽  
Pine Needles ◽  
Basal Region ◽  
Ecological Groups ◽  
Gall Formation ◽  
Pine Needle ◽  
Hybrid Pine ◽  
Pine Needle Gall Midge

The endophytic mycobiota of the galls of pine needle gall midge, Thecodiplosis japonensis, and healthy current-year needles of Pinus densiflora and the F2 hybrid pine (Pinus thunbergii × (P. thunbergii × P. densiflora)) was compared. Phialocephala sp. was the dominant endophyte isolated from the galls and from the basal regions of healthy needles. Species richness in endophytes was facilitated in galls compared to the basal region of healthy needles, and the commencement of their colonization was hastened in galls. In the early stages of gall formation, however, no endophyte was isolated, suggesting that gall endophytes are not carried into the galls by the midge. Endophytes of healthy and galled pine needles were divided into two groups: position-specific fungi, which showed intrinsically restricted distributions on needles; and gall-specific fungi. These two groups might represent different ecological groups of endophytes. Possible interactions between endophytes and the pine needle gall midge are also discussed. Key words: endophytic fungi, Pinus densiflora, F2 hybrid pine, pine needle gall midge.

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