Occurrence and Survival of the Dispersal Forms of Pine Wood Nematode, Bursaphelenchus lignicolus MAMIYA and KIYOHARA : Ecological significance of dormancy in plant parasitic nematodes. V.
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概要
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The dispersal 3rd-stage larvae (L_<III>s) of B. lignicolus began to occur after 3 to 5 months on the fungal mat of Botrytis cinerea without being subcultured and constituted almost 100% of the surviving nematodes after 10 months. However, extended monoxenic culturing of the nematodes brought about a decrease in the survivability under the starvation and consequently decreased the production of the L_<III>s. Addition of fatty extracts from larvae and pupae of a cerambycid beetle. Monochamus alternatus, gave rise to an increase in surviving nematodes and in the L_<III>s after being left without subculture. The molting of the L_<III>s in water to the dispersal 4th-stage larvae (L_<IV>s) was positively correlated to the developmental stages of the beetle at the collection time of worms. However, most of L_<III>s, which had been left in the pupal chambers for 20 days after the removal of the insects, molted into the prpagative 4th-stage larvae (L_4s), irrespective of the pupation of the insect. L_<III>s and L_<IV>s were both still viable after 100 days under starvation. The live L_<IV>s were recovered from dried cadavers of adult beetles after 6 months. The L_<III>s seem to be relatively better able to surive under starvation, whilst the L_<IV>s under dryness.
- 日本応用動物昆虫学会の論文
- 1977-12-25
著者
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Kondo Eizo
Laboratory Of Applied Zoology Faculty Of Agriculture Tokyo University Of Education Komaba:(present A
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Ishibashi Nobuyoshi
Laboratory Of Nematology And Enlomology Faculty Of Agriculture Saga University
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