| Summary: | 碩士 === 國立中興大學 === 植物學系 === 90 === The Fagaceae, consisting 7 genera and 51 species, widely
distributes from low elevation to high mountain area in Taiwan.
Plant galls of Fagaceae in Taiwan were investigated from July,
2000 to December, 2001. We found 76 types of insect galls from
6 genera with 24 species of Fagaceae. 58 types（73.3％） of
galls were found on the leaf part. All genera of Fagaceae bear
more galls on the leaf part except Pasania, which shows 4
types on the flowers and 4 types on the leaves. Based on the
basic gall types as, covering galls, mark galls, fold galls,
roll galls and pouch galls were found, and covering galls
（69.8％）were the most common. According to the inside tissue
structure, the prosoplasmatic galls （75.0％）were more common
than kataplasmatic galls. That implies that most of the
Fagaceae galls have highly differentiated tissues.
Based on preliminary results, we found that gall inducing
of insects associated with the phenology of Fagaceae plants.
The Pasania plants blossom and bear fruits during July to
October. Most insect galls found on this genus in this period
were on the anthotaxy. However, the Quercus fell leaves during
winter, and no insect galls of this genus were found from
December to February. The leafing period of all Fagaceae plants
was during March to June, and the gall, were much rarer during
this period.
Insects induce similar or different shapes of gall among
the species of the same genus. Gall inducing insects have close
relationships with host plants. These particular insect galls
could help to identify the plant species. Using Jaccard
coefficient and UPGMA clustering, dendrogram of 9 species of
Cyclobalanopsis according to their 43 gall types was made. The
relationships among the species of Cyclobalanopsis were grouped
as: (Cyclobalanopsis gilva(((((Cyclobalanopsis glauca ,
Cyclobalanopsis stenophylloides)( Cyclobalanopsis longinux ,
Cyclobalanopsis pachyloma))( Cyclobalanopsis globosa ,
Cyclobalanopsis morii)) Cyclobalanopsis myrsinifolia)
Cyclobalanopsis sessilifolia)).
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