Lipopolysaccharide evokes microaggregation reactions in hemocytes isolated from tobacco hornworms, Manduca sexta
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چکیده
منابع مشابه
High temperature slows down growth in tobacco hornworms (Manduca sexta larvae) under food restriction.
When fed ad libitum (AL), ectothermic animals usually grow faster and have higher metabolic rate at higher ambient temperature. However, if food supply is limited, there is an energy tradeoff between growth and metabolism. Here we hypothesize that for ectothermic animals under food restriction (FR), high temperature will lead to a high metabolic rate, but growth will slow down to compensate for...
متن کاملAn entomopathogenic bacterium, Xenorhabdus nematophila, inhibits hemocytic phospholipase A2 (PLA2) in tobacco hornworms Manduca sexta.
The entomopathogenic bacterium, Xenorhabdus nematophila, induces immunodepression in target insects and finally leads to lethal septicemia of the infected hosts. A hypothesis has been raised that the bacteria inhibit eicosanoid-biosynthesis pathway to interrupt immune signaling of the infected hosts. Here, we show direct evidence that X. nematophila inhibits the activity of phospholipase A2 (PL...
متن کاملBehavioral responses of adult female tobacco hornworms, Manduca sexta, to hostplant volatiles change with age and mating status
We present evidence for two behaviors influenced by intact, vegetative plant odor - upwind flight and abdomen curling - in female Manduca sexta and demonstrate the influence of the age and mating status of the moths on these behaviors. We compared the behavioral responses of laboratory-reared M. sexta. of discrete ages and physiological states (2,3, and 4 day old for virgin; 2 and 3 day old for...
متن کاملThe Structure of Dolichols Isolated from Manduca sexta Larvae
We isolated and analyzed dolichols from fifth stadium larvae of Manduca sexta, in an effort to determine if M. sexta produces ethyl-branched dolichols. Like other lepidopterans, this animal is known to produce the ethyl-branched, homoisoprenoid juvenile hormones. However, we were unable to detect any ethyl-branched dolichol homologues. Manduca sexta larvae at this stage do contain the common eu...
متن کاملSex-Specific Odorant Receptors of the Tobacco Hornworm Manduca Sexta
As odor information plays a vital role in the life of moths, their olfactory sense has evolved into a highly specific and sensitive apparatus relevant to reproduction and survival. The key players in the detection of odorants are olfactory receptor (OR) proteins. Here we identify four OR-encoding genes differentially expressed in the antennae of males and females of the sphingid moth Manduca se...
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ژورنال
عنوان ژورنال: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology
سال: 2004
ISSN: 1095-6433
DOI: 10.1016/j.cbpb.2003.10.003