Variations of biogenic amine levels in the brain of <i>Pieris brassicae</i> pupae during nondiapausing and diapausing development

Puiroux, Jacques; Moreau, Robert A.; Gourdoux, L.

doi:10.1002/arch.940140202

Cited by 23 publications

(8 citation statements)

References 27 publications

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“…The present study does not support the hypothesis that the high levels of DA and 5-HT in the CNS prevent larval development and metamorphosis as suggested for the diapausing pupae of Pieris brassicae (Puiroux et al, 1990). Resumption of development and subsequent pupariation were observed in the 50-and 100day-old diapausing larvae of C. costata upon transfer to 18°/LD (tachytelic conditions) without any previous decrease of the DA and 5-HT contents.…”

Section: Dopamine and Serotonin During Diapause Maintenance And Termicontrasting

confidence: 99%

“…More recently, variations of biogenic amine levels were measured in the brain of Pieris brassicae pupae during continuous development and diapause. It was suggested that 5-HT could inhibit brain neurosecretory activity during the first days of diapause and, in addition, that the high levels of DA and 5-HT may be involved in the maintenance of the diapausing state (Puiroux et al, 1990). In another study, 5-HT (but not DA) was found to stimulate JH release from the corpora alata of honey bee worker larva and thus regulate the caste production (Rachinsky, 1994).…”

Section: Introductionmentioning

confidence: 97%

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Dopamine and serotonin in the larval CNS of a drosophilid fly,Chymomyza costata: Are they involved in the regulation of diapause?

Košťál¹,

Noguchi²,

Shimada³

et al. 1999

Arch. Insect Biochem. Physiol.

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Developmental profiles of dopamine (DA) and serotonin (5‐hydroxytryptamine, 5‐HT) in the larval CNS of Chymomyza costata were measured by HPLC using electrochemical detection. Larvae of two strains, wild‐type (W) and nondiapause mutant (M), were maintained either under long‐day (LD, inducing pupariation) or short‐day (SD, inducing diapause in W‐strain) photoperiods. The levels of DA ranged from 10 fmol/CNS (early 3rd instar larvae) to 60 fmol/CNS (150‐day‐old diapausing larvae); the range for 5‐HT was from 10 fmol/CNS to 75 fmol/CNS in the same larvae. During the 3rd larval instar, which is the decisive stage for photoperiodic induction of diapause, no differences were found in DA developmental profiles between different strains or conditions. Some differences were found in 5‐HT developmental profiles, but only after the end of sensitive stage, and were therefore regarded as insignificant for regulation of developmental mode. Similarly, no clear correlations between the developmental profiles of DA and 5‐HT and the course of developmental changes during the maintenance and termination of a few‐month‐long larval diapause were observed. Furthermore, the DA and 5‐HT levels in the CNS were pharmacologically manipulated by feeding the larvae with either precursors or enzyme inhibitors of DA and 5‐HT biosynthesis. Although retardations of growth and development were observed, the treated larvae retained full capacity for the photoperiodic response, irrespective of the level of DA or 5‐HT in their CNS. Larvae with their 5‐HT depleted to trace levels survived and were capable of diapause induction, maintenance, and termination. Depletion of DA to trace levels resulted in 100% mortality. Collectively, the present study indicates that 5‐HT in the CNS is dispensable for the photoperiodic response in C. costata. More information is needed to elucidate the potential role of DA. Arch. Insect Biochem. Physiol. 42:147–162, 1999. © 1999 Wiley‐Liss, Inc.

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Section: Dopamine and Serotonin During Diapause Maintenance And Termicontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Dopamine and serotonin in the larval CNS of a drosophilid fly,Chymomyza costata: Are they involved in the regulation of diapause?

Košťál¹,

Noguchi²,

Shimada³

et al. 1999

Arch. Insect Biochem. Physiol.

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show abstract

“…Dopamine, for example, is an important regulator of diapause induction in several insect species (Puiroux et al . ; Noguchi & Hayakawa , ; Denlinger ). Dopamine and other biogenic amine levels are modulators of the corpora allata activity (Hartfelder ) – the tissue that produces JH – and thus may help transduce environmental cues into changes in hormones and physiology.…”

Section: Resultsmentioning

confidence: 99%

Conservation and modification of genetic and physiological toolkits underpinning diapause in bumble bee queens

Amsalem

Galbraith

Cnaani³

et al. 2015

Molecular Ecology

112

137

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Diapause is the key adaptation allowing insects to survive unfavourable conditions and inhabit an array of environments. Physiological changes during diapause are largely conserved across species and are hypothesized to be regulated by a conserved suite of genes (a 'toolkit'). Furthermore, it is hypothesized that in social insects, this toolkit was co-opted to mediate caste differentiation between long-lived, reproductive, diapause-capable queens and short-lived, sterile workers. Using Bombus terrestris queens, we examined the physiological and transcriptomic changes associated with diapause and CO2 treatment, which causes queens to bypass diapause. We performed comparative analyses with genes previously identified to be associated with diapause in the Dipteran Sarcophaga crassipalpis and with caste differentiation in bumble bees. As in Diptera, diapause in bumble bees is associated with physiological and transcriptional changes related to nutrient storage, stress resistance and core metabolic pathways. There is a significant overlap, both at the level of transcript and gene ontology, between the genetic mechanisms mediating diapause in B. terrestris and S. crassipalpis, reaffirming the existence of a conserved insect diapause genetic toolkit. However, a substantial proportion (10%) of the differentially regulated transcripts in diapausing queens have no clear orthologs in other species, and key players regulating diapause in Diptera (juvenile hormone and vitellogenin) appear to have distinct functions in bumble bees. We also found a substantial overlap between genes related to caste determination and diapause in bumble bees. Thus, our studies demonstrate an intriguing interplay between pathways underpinning adaptation to environmental extremes and the evolution of sociality in insects.

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“…), and pupal diapause in the large white butterfly Pieris brassicae (L.) (Puiroux et al . ) and in the cabbage armyworm Mamestra brassicae (L.) (Noguchi & Hayakawa ).…”

Section: Introductionmentioning

confidence: 99%

D2‐like dopamine receptors mediate regulation of pupal diapause in Chinese oak silkmoth Antheraea pernyi

Wang

Hanatani

Takeda

et al. 2014

Entomological Science

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The present study investigated the pharmacological properties of dopamine receptors that functioned in the termination of pupal diapause in the Chinese oak silkmoth, Antheraea pernyi (Lepidoptera: Saturniidae). Dopamine receptors are classified according to their structure and function into two subfamilies as D1‐ and D2‐like receptors. D1‐like receptors activate, whereas D2‐like receptors inhibit, adenylate cyclase. We examined the effects of agonists and antagonists selective for D1‐ and D2‐like receptors on the diapause state. As A. pernyi is a long‐day species, pupal diapause is maintained during short days and can be terminated by exposure to a long‐day photoperiod. The D2‐like receptor‐selective agonist quinpirole delayed the timing of adult emergence under long days, and the D2‐receptor‐selective antagonist sulpiride terminated pupal diapause even under a short‐day photoperiod. The D1‐like receptor‐selective agonist and antagonist, SKF‐38393 and SCH‐23390, respectively, caused no significant effects on diapause pupae. These results suggest that not D1‐ but D2‐like receptors mediated diapause regulation in A. pernyi. This dopamine pathway appeared to block the termination of pupal diapause. Furthermore, the actions of the cAMP analog 8‐CPT‐cAMP and dopamine receptor antagonists upon diapause pupae were similar, which supports the notion that D2‐like receptors involved in diapause of this insect prevent adenylate cyclase from producing cAMP like vertebrate D2‐like receptors. Taken together, our findings suggest that dopamine blocked diapause termination through D2‐like receptors that inhibited adenylate cyclase in A. pernyi. During short days under which diapause was maintained in pupae, the dopaminergic mechanism might be stimulated to suppress cAMP levels in cells regulating diapause.

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Variations of biogenic amine levels in the brain of Pieris brassicae pupae during nondiapausing and diapausing development

Cited by 23 publications

References 27 publications

Dopamine and serotonin in the larval CNS of a drosophilid fly,Chymomyza costata: Are they involved in the regulation of diapause?

Dopamine and serotonin in the larval CNS of a drosophilid fly,Chymomyza costata: Are they involved in the regulation of diapause?

Conservation and modification of genetic and physiological toolkits underpinning diapause in bumble bee queens

D2‐like dopamine receptors mediate regulation of pupal diapause in Chinese oak silkmoth Antheraea pernyi

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