|Title:||華釉小蜂(膜翅目:釉小蜂科)之貯存與產卵調節能力||Other Titles:||Study of the storage and oviposition-regulating capability of Neochrysocharis formosa (Hymenoptera: Eulophidae)||Authors:||錢景秦
Chien, C. C.
Ku, S. C.
Chang, S. C.
|Keywords:||華釉小蜂;非洲菊斑潛蠅;貯存;致死寄主能力;產卵調節能力;Neochrysocharis formosa;Liriomyza trifolii;storage;host-killing capability;oviposition-regulating capability||Issue Date:||Sep-2005||Publisher:||中華植物保護學會||Journal Volume:||47||Journal Issue:||3||Start page/Pages:||213-227||Source:||植物保護學會會刊||Abstract:||
本文探討華釉小蜂（Neochrysocharis Formosa (Westwood)）貯存之蟲期與
（Liriomyza trifolii (Burgess)）幼蟲與純蜂蜜時，僅蜂蛹貯存1 週者之致死寄主
31.2%，甚至蜂蛹貯存4 與5 週者，子代雌性比顯著較對照組各減少37 與96%。
與56.6 日，且雌、雄蜂各貯存55 與45 日後之存活率仍高達80%。同時發現雌
蜜後，僅雌蜂在15℃下貯存10～40 日或在25℃下貯存10 日者，其致死寄主能
20 日者，其致死寄主總數較對照組各減少53.0 或36.4%，子蜂數較對照組各減
件均為雌蜂在15 或25℃下餵食純蜂蜜各貯存10～40 或10 日、或第一日齡蜂
蛹在10℃下貯存1 週，其次為雌蜂在15 或25℃下餵食純蜂蜜各貯存50 或20
調節能力，其中以在15℃下貯存10～30 日或在25℃下貯存10～20 日者之
In this study, we investigated the suitable life stages and conditions for storage
of the wasp, Neochrysocharis formosa (Westwood). The wasp’s ovipositionregulating
capability after storage was also determined. Results showed that there was
a significant difference in the percent emergence between 1-day-old pupae stored at
8°C for 1-2 weeks ( % emergences of 71.1-78.4 %) and the control ( % emergence of
93.2 %). However, the percent emergence did not decrease if the 1-day-old pupae
were stored at 10°C for 1-6 weeks. Emerged from the pupae previously stored at
10°C for 1 week, and followed by rearing at 25°C with honey and host (Liriomyza
trifolii (Burgess)), the wasps were not affected by the storage conditions in their
capability of host-killing and offspring production, while emerged from the pupae
previously stored at 10°C for 2-3 week the wasp’s female longevity, host-killing
capability, and offspring production decreased by 18.2-31.8 %, 47.0-52.5 %, and
29.7-31.2 %, respectively, compared to those of the controls. Adults were fed only
with honey at between 15 and 30°C for various time periods for the study of storage
conditions. It was found that mean adult longevity was the highest under the 15°C
storage conditions with the female and male longevity of 68.3 and 56.6 days,
respectively. In addition, the survival rate still reached 80 % after female and male
had been stored for 55 and 45 days, respectively. After the end of the storage periods,
wasps were kept at 25°C with both honey and hosts to evaluate their capability for
host-killing and offspring production. The results revealed that the host-killing
capability and fertility of the wasps were not influenced after the adults had been
stored at 15°C for 10-40 days or 25°C for 10 days, respectively. However, the
host-killing capability and the total offspring production significantly decreased after
the adult wasps had been stored at 15°C for 50 days or 25°C for 20 days, respectively.
For both mass production and field release of N. formosa, the suitable conditions to
store the colony according to priority are (1) female wasps at 15°C for 10-40 days or
25°C for 10 days, or 1-day-old pupae at 10°C for 1 week, (2) female wasps at 15°C
for 50 days or 25°C for 20 days, or 1-day-old pupae at 10°C for 2-3 weeks. Female
wasp has an ability to self-regulate oviposition in response to different storage
conditions. Under the storage conditions at 15°C for 10-30 days or 25°C for 10-20
days, female N. formosa shows a comparable daily oviposition pattern to the control.
However the oviposition schedules and the occurrence of the peak oviposition
period under other storage conditions were shorter and later than that of the control,
these differences were most apparent at 25℃.
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