The Relationship between Gall Size and Sizes of Selected Inhabitants of the Ball Gall of Eurosta solidaginis on Solidago altissima

北美一枝黃花上癭蠅（Eurosta solidaginis）的球狀蟲癭大小和癭內生物之相關性

Carol C. Mapes ； Jenna P. Ruoss ； Kelly Tessier

《台灣昆蟲》 38卷4期 (2018/12) Pp. 79-87

https://doi.org/10.6662/TESFE.2018021

摘要

The purpose of this study was to determine if there is a correlation between final ball gall mass and the mass of the gall inducing larva of Eurosta solidaginis and/or the mass of the adult fly that emerges, and to determine if there is a correlation between gall mass and the mass of the parasitoid Eurytoma obtusiventris. Another goal was to determine if there was a correlation between ball gall size and the sex of the adult fly that emerges. Adult flies were sexed and weighed as were the associated galls. Larval dry masses and dry masses of ball galls, with or without exit tunnels, were also determined. No correlation was found between ball gall mass and the mass of the adult fly that emerged from the gall. Adult female flies were of greater mass than male flies, but there was no correlation between gall mass and the sex of the gall former. Results indicate no biologically significant correlation between dry masses of the gall formers and dry masses of the galls. Furthermore, no biologically significant correlation was found between ball gall size and the size of the parasitic wasp Eurytoma obtusiventris. Interestingly, larger ball galls do not typically yield larger larvae or adults of Eurosta solidaginis.

關鍵字

Diptera ； Tephritidae ； Eurosta solidaginis ； Solidago altissima ； ball gall

並列摘要

本研究之目的為瞭解成熟的球狀蟲癭重量是否與癭蠅（Eurosta solidaginis）之幼蟲重量及／或與成蟲重量有相關性，及蟲癭重量是否與癭蠅寄生蜂Eurytoma obtusiventris重量相關，另一目的則為探討蟲癭大小是否與癭蠅成蟲之性別有相關性。首先鑑定成蟲性別，再進行成蟲及蟲癭的稱重，同時記錄幼蟲乾重、蟲癭乾重與是否有羽化通道。結果顯示蟲癭重量和成蟲重量之間無相關性，雌蟲較雄蟲重，但蟲癭重量和性別無相關性。由此顯示癭蠅之造癭者的乾重和蟲癭的乾重無生物學之顯著關聯，再者，蟲癭大小和寄生蜂體型也無生物學中的顯著相關，其中有趣的是，較大的蟲癭並不會孕育出較大的癭蠅幼蟲或成蟲。

並列關鍵字

雙翅目 ； 果實蠅科 ； Eurosta solidaginis ； Solidago altissima ； 球狀蟲癭