Abstract：
:Juvenile hormones (JH) I, II, and III were monitored in hemolymph of virgin and mated females of various ages in Heliothis virescens. JH I was the predominant homologue followed by JH II, but JH II was present at a higher level in young virgin females. JH III was detectable only at a low level. In virgin females, hemolymph JH titers were low at emergence (2.2ng/ml-total amount of JH I and JH II), but increased thereafter and reached a maximum at 24h of age (53.5ng/ml). At 30h and 36h of age, JH titers dropped to a low level, but increased again in older virgin females. After mating, JH titers increased significantly. JH titers at 0h after uncoupling (137.4ng/ml) were nearly 3 times as high as those in 24-h-old virgin females. Within 6h after uncoupling, JH titers decreased slightly, but titers increased with age of mated females and reached a level of 320.2ng/ml hemolymph at 72h after uncoupling. The titer of JH I and JH II was correlated highly with total number of eggs produced (r(2)=0.70, P<0.001). Mating stimulated JH production, resulting in an increase in egg production.
journal_name
J Insect Physioljournal_title
Journal of insect physiologyauthors
Shu S,Park YI,Ramaswamy SB,Srinivasan Adoi
10.1016/s0022-1910(97)00117-0keywords:
subject
Has Abstractpub_date
1998-11-01 00:00:00pages
1111-1117issue
11eissn
0022-1910issn
1879-1611pii
S0022191097001170journal_volume
44pub_type
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journal_title：Journal of insect physiology
pub_type： 杂志文章
doi：10.1016/j.jinsphys.2009.09.006
更新日期：2010-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jinsphys.2007.11.004
更新日期：2008-02-01 00:00:00
abstract：:Disruption of the appropriate balance between juvenile hormone (JH) and ecdysteroids causes abnormal insect development. The application of a JH analog (JHA) during the early days of the final (fifth) instar induces dauer larvae with low ecdysteroid titers in insects, but the mechanism that underlies the action of JHA...
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更新日期：2015-09-01 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2008-07-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jinsphys.2007.03.004
更新日期：2007-06-01 00:00:00
abstract：:The resistance of a transgenic line of oilseed rape expressing constitutively the cysteine proteinase inhibitor oryzacystatin I (OCI) was assessed against Psylliodes chrysocephala L. (Coleoptera: Chrysomelidae). The levels of OCI expression in the transformed line averaged 0.2% and 0.05% of total soluble protein in le...
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pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2014-02-01 00:00:00
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pub_type： 杂志文章
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