Regulation of lepidopteran foregut movement by allatostatins and allatotropin from the frontal ganglion

Duve, Hanne; East, Peter D.; Thorpe, Alan

doi:10.1002/(sici)1096-9861(19991025)413:3<405::aid-cne4>3.0.co;2-r

Cited by 114 publications

(62 citation statements)

References 20 publications

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“…With regard to the direction of the peristaltic waves, as in the lepidopteran Helicoverpa armigera (Duve et al, 1999), we found considerable variations among different individuals. In some insects, the peristaltic waves seemed to be mainly in a posterior-to-anterior direction, while in other insects a combined pattern of anterior-to-posterior and posterior-toanterior directed waves was found.…”

Section: Discussionmentioning

confidence: 99%

“…As previously reported in other insect species, very low doses are required to produce myostimulation (Duve et al, 1999;Duve et al, 2000). AT was first isolated in M. sexta (Kataoka et al, 1989) and then found in other insect and invertebrate species, showing a highly conserved sequence among all species.…”

Section: Discussionmentioning

confidence: 99%

“…Like other neuropeptides, it is multifunctional, acting as a myostimulator at the level of the foregut in two lepidopteran species (Duve et al, 1999;Duve et al, 2000) and at the level of the hindgut (HG) in the cockroach Leucophaea maderae (Rudwall et al, 2000). AT is also a cardioacceleratory peptide, both in lepidopterans (Koladich et al, 2002;Veenstra et al, 1994) and in cockroaches (Rudwall et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Allatotropin-like peptide released by Malpighian tubules induces hindgut activity associated with diuresis in the Chagas disease vector Triatoma infestans (Klug)

Santini

Ronderos

2007

Journal of Experimental Biology

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SUMMARY Haematophagous insects incorporate a large amount of blood with each meal,producing a big quantity of urine in a few hours to eliminate the excess water and Na+. Malpighian tubules (MTs) have traditionally been seen as a system that responds to neuroendocrine stimulus. In a related paper, we demonstrated that MTs of Triatoma infestans produce an autonomous endocrine secretion of an allatotropin-like (AT-like) peptide. In the present study, we report a myostimulatory activity of AT at the level of the hindgut(HG), associated with endocrine mechanisms regulating post-prandial diuresis. Allatotropin induced an increase in frequency and intensity of peristaltic contractions at the level of the HG. The release of the HG content in MTs–HG in vitro preparations undergoing an osmotic shock occurred at different times, depending on the number of MTs present, and there was no release in treatments without MTs. The application of an AT-antiserum to MTs–HG preparations undergoing osmotic shock produced a delay or a long-term blockade of diuresis, depending on the antiserum dilution applied. Similar results were obtained when AT-antiserum was applied in vivoprior to blood intake, decreasing the volume of urine eliminated during the first 2 h. Our results allow us to assign a specific endocrine function to the AT-like peptide released by MTs that is linked to the elimination of urine after blood meals.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Allatotropin-like peptide released by Malpighian tubules induces hindgut activity associated with diuresis in the Chagas disease vector Triatoma infestans (Klug)

Santini

Ronderos

2007

Journal of Experimental Biology

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“…Their suggested functions include roles in the control of gut peristalsis, heart rate, circadian rhythms, and production of juvenile hormone (Hernández-Martínez et al, 2005;Duve et al, 1999Duve et al, , 2000. The distribution of immunoreactivity revealed by antibodies raised against A-type allatostatins has been investigated in the frontal ganglion of lepidopteran larvae (Duve and Thorpe, 2003;Duve et al, 2000) and in olfactory and higher centers of the insect brain where it has been shown to often colocalize with GABA (Schachtner et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Global and local modulatory supply to the mushroom bodies of the moth Spodoptera littoralis

Sinakevitch¹,

Sjöholm

Hansson

et al. 2008

Arthropod Structure & Development

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The moth Spodoptera littoralis, is a major pest of agriculture whose olfactory system is tuned to odorants emitted by host plants and conspecifics. As in other insects, the paired mushroom bodies are thought to play pivotal roles in behaviors that are elicited by contextual and multisensory signals, amongst which those of specific odors dominate. Compared with species that have elaborate behavioral repertoires, such as the honey bee Apis mellifera or the cockroach Periplaneta americana, the mushroom bodies of S. littoralis were originally viewed as having a simple cellular organization. This has been since challenged by observations of putative transmitters and neuromodulators. As revealed by immunocytology, the spodopteran mushroom bodies like those of other taxa, are subdivided longitudinally into discrete neuropil domains. Such divisions are further supported by the present study, which also demonstrates discrete affinities to different mushroom body neuropils by antibodies raised against two putative transmitters, glutamate and γ-aminobutyric acid, and against three putative neuromodulatory substances: serotonin, A-type allatostatin, and tachykinin-related peptides. The results suggest that in addition to longitudinal divisions of the lobes, circuits in the calyces and lobes are likely to be independently modulated.

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“…The morphological, physiological and anatomical studies over the years have contributed immensely to the existing knowledge on insect neuromuscular anatomy (Usherwood, 1967(Usherwood, , 1968Eaton, 1982;Yang, 1983;Bartos and Honegger, 1992;Brunn, 1998;Bullaro and Prete, 1999;Duve et al, 1999;Wolf and Harzsch, 2002;Kawasaki and Kita, 2004 ;Kent and Levine, 2004;Burrows, 2007;Copenhaver, 2007). Of late, extensive studies have been carried out on nerve topography and musculature of a variety of insects including the mosquito, Culiseta inormata (Owen, 2006), hymanopteran, Nomia melanderi (Youssef, 2005a, b), honey bee, Apis mellifera (Masuko, 2005;Shankland,2005), Drosophila and Calliphora (Sink, 2006;Spieb et al, 2007), cricket, Gryllus campestris and cockroach, Periplaneta amiricana (Honegger et al, 2004;Alsop, 2005;Davis, 2005;Klass, 2008), Further, the embryonic development of coxal muscles and their innervation in cockroach (Denburg and Fulop, 2005) and flight muscles in cricket (Ready and Josephson, 2005a,b) and the modulatory role of allatostatin on neuromuscular parameters (Kreiss et al, 1999) have also been reported.…”

Section: Introductionmentioning

confidence: 99%

Neuromuscular systems in the fifth instar larva of silkworm Bombyx mori (Lepidoptera: Bombycidae): II- Abdominal musculature and its innervation

Sivaprasad¹,

Muralimohan²

2009

JANS

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Abstract:The gross organisation of abdominal musculature and its innervation by segmental ganglionic nerves were studied in the fifth instar larva of Bombyx mori. The musculature comprises dorsal, ventral and lateral groups of muscles, represented as external and internal layers. The dorsal group includes musculi dorsales interni mediales (DIM), musculi dorsales externi mediales (DEM), musculi dorsales interni laterals (DIL) and musculi dorsales externi laterales (DEL). The ventral group includes musculi ventrales interni mediales (VIM), musculi ventrales externi mediales (VEM), musculi ventrales interni laterales (VIL) and musculi ventrales externi laterales (VEL). The lateral group is represented by musculi laterales interni (LI) and musculi laterales externi (LE). The abdominal muscles are innervated by the dorsal (DN) and ventral (VN) nerves of abdominal ganglia. The DN innervates ventral internal, lateral internal and both dorsal external and internal muscles, while the VN innervates ventral external and lateral muscles. The sensory branches of DN and VN innervate the bodywall in the dorsal and ventral regions respectively with a sort of overlapping in the lateral region. The neuromuscular integration and intersegmental coordination in the abdominal region is discussed with reference to locomotion in the silkworm larva.

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Regulation of lepidopteran foregut movement by allatostatins and allatotropin from the frontal ganglion

Cited by 114 publications

References 20 publications

Allatotropin-like peptide released by Malpighian tubules induces hindgut activity associated with diuresis in the Chagas disease vector Triatoma infestans (Klug)

Allatotropin-like peptide released by Malpighian tubules induces hindgut activity associated with diuresis in the Chagas disease vector Triatoma infestans (Klug)

Global and local modulatory supply to the mushroom bodies of the moth Spodoptera littoralis

Neuromuscular systems in the fifth instar larva of silkworm Bombyx mori (Lepidoptera: Bombycidae): II- Abdominal musculature and its innervation

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