1992
DOI: 10.1007/bf00318803
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Structure and development of the larval central complex in a holometabolous insect, the beetle Tenebrio molitor

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Cited by 71 publications
(70 citation statements)
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“…We then determined that serotonin stimulated cAMP production by M. sexta Mt with an EC50 value of -0.14 ,tM but had essentially no effect on cAMP production by Mt of T. molitor even at 10 mM (K.F., data not shown). The stimulation of M. sexta Mt by this hydrophilic fraction is most likely due to serotonin, as immunohistochemical studies have shown a serotonin-like material in the brain (39,40), ventral nerve cord (41), and subesophageal ganglion (42) of T. molitor. There may be another biogenic amine present in T. molitor extracts that is responsible for the stimulation of cAMP secretion by T. molitor Mt. During the first LC purification step using a semipreparative column, two relatively hydrophobic fractions were observed which stimulated cAMP production in Mt of T. molitor (Fig.…”
Section: Discussionmentioning
confidence: 99%
“…We then determined that serotonin stimulated cAMP production by M. sexta Mt with an EC50 value of -0.14 ,tM but had essentially no effect on cAMP production by Mt of T. molitor even at 10 mM (K.F., data not shown). The stimulation of M. sexta Mt by this hydrophilic fraction is most likely due to serotonin, as immunohistochemical studies have shown a serotonin-like material in the brain (39,40), ventral nerve cord (41), and subesophageal ganglion (42) of T. molitor. There may be another biogenic amine present in T. molitor extracts that is responsible for the stimulation of cAMP secretion by T. molitor Mt. During the first LC purification step using a semipreparative column, two relatively hydrophobic fractions were observed which stimulated cAMP production in Mt of T. molitor (Fig.…”
Section: Discussionmentioning
confidence: 99%
“…The determination of instars is possible with sensitive and specific mass fragmentographic method [13]. So, in the case of larvae stages, the results of earlier studies were used to identify instars [14,15]. In our study, the third instar (6.8±1.9 mm, mean ± SD), the eighth instar (7.8±1.3 mm, mean ± SD) and the last instar (20.4±1.2 mm, mean ± SD) were used.…”
Section: Life Cycle Of Mealworm Beetlementioning
confidence: 99%
“…In the larval beetle Tenebrio molitor , for example, the central complex comprises basic arrangements of decussating pioneer axons intersected by tangential processes, typifying the ground pattern organization of these centers. During larval maturation and metamorphosis to adulthood, the central complex acquires greater intricacy as more types of nerve cells contribute to it [Wegerhoff and Breidbach, 1992]. As does an adult insect, its larva will select actions appropriate to its ecology.…”
Section: Is Convergence a Useful Explanation For The Evolution Of Bramentioning
confidence: 99%