Periodic muscular activity and its possible functions in pupae of <i>Tenebrio molitor</i>

Tartes, Urmas; Kuusik, Aare

doi:10.1111/j.1365-3032.1994.tb01045.x

Cited by 18 publications

(12 citation statements)

References 11 publications

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“…These abdominal pulsations, visible under a stereomicroscope, are probably related to haemolymph pressure pulsations (see Sláma 1976, 1984a). According to our data ( Tartes & Kuusik 1994; Kuusik et al . 1996 ) abdominal pulsations do not commonly disturb the basic rhythm of cyclic CO 2 release.…”

Section: Methodsmentioning

confidence: 50%

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Diversity in gas exchange and muscular activity patterns in insects studied by a respirometer‐actograph

Tartes

Kuusik

Vanatoa

1999

Physiological Entomology

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Summary Different events in insect gas exchange and muscular activity are described by a new system of automatic respirometers, a differential electrolytic microrespirometer‐actograph. This is very sensitive to volumetric changes caused by insect respiration and/or body movements. In this system, oxygen generation and its regulation are combined in the same current circuit. According to this principle, the oxygen consumed by the insect is continuously replaced by equal amounts of electrolytically produced oxygen. This simple laboratory‐made apparatus records simultaneously metabolic rate, the cyclicity of external gas exchange, rhythms of muscular ventilating and the pattern of other body movements, including abdominal pulsations not observable with the naked eye. The respirometer‐actograph described here is applicable also to the recording of the respiration of other terrestrial arthropods or other living organisms or tissues.

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Section: Methodsmentioning

confidence: 50%

“…Earlier we have shown that the principle of electrolytic microcompensation of oxygen can be exploited for simultaneous monitoring of metabolic rate and respiratory movements in insects ( Kuusik et al . 1991 ; Tartes & Kuusik 1994).…”

Section: Introductionmentioning

confidence: 99%

Diversity in gas exchange and muscular activity patterns in insects studied by a respirometer‐actograph

Tartes

Kuusik

Vanatoa

1999

Physiological Entomology

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“…A differential electrolytic microrespirometeractograph was used for the sensitive recordings of gas exchange cycles and microcycles (Kuusik et al, 1992;Tartes and Kuusik, 1994;Tartes et al, 1999Tartes et al, , 2000Tartes et al, , 2002. This closed-system and constant volume micro-respirometer allowed simultaneous recording of metabolic rate, discrete CO 2 releases (bursts), rapid intakes of air into the tracheae referred to as passive suction ventilation (PSV) in microcycles, and active abdominal movements.…”

Section: Constant-volume Respirometrymentioning

confidence: 99%

Discontinuous gas exchange cycles and active ventilation in pupae of the bumblebee Bombus terrestris

et al. 2005

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-Discontinuous release of CO 2 (bursts) or discontinuous gas exchange cycles (DGC), metabolic rate (MR) and ventilation movements were simultaneously recorded from the pupae of the bumblebee Bombus terrestris by means of an electrolytic respirometer and an infrared gas analyser (IRGA) combined with an infrared actograph (IRA). After recovering from stress, the early stage pupae showed irregular continuous respiration, mid-stage pupae displayed regular DGC. The bursts of CO 2 release tended to coincide with abdominal contractions. In late stage pupae all bursts of CO 2 were associated with active ventilation. During interburst periods, spikes appeared on the respirograms interpreted as micro-cycles of passive suction ventilation (PSV). After removal from their cocoons, the pupae exhibited frequent periods of muscular activity due to stress. Water loss of pupae inside cocoons was significantly less than that from pupae without cocoons. Bombus terrestris L. / passive suction ventilation / standard metabolic rate / respirometry

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“…1992 ) or registered by a respirometer‐actograph ( Kuusik et al . 1991 , 1996; Tartes 1990; Tartes & Kuusik 1994; Tartes et al . 1999b ).…”

Section: Introductionmentioning

confidence: 99%

Abdominal movements, heartbeats and gas exchange in pupae of the Colorado potato beetle, Leptinotarsa decemlineata

Tartes

Kuusik

Hiiesaar

et al. 2000

Physiological Entomology

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Summary The rhythms of abdominal movements, heartbeats and gas exchange in the pupae of Leptiontarsa decemlineata (Say) were recorded simultaneously using an electrolytic respirometer and infrared gas analyser, both combined with contact thermography. Abdominal pulsations and heartbeat occurred periodically with little variance among individuals. The abdominal pulsations and heartbeat pauses varied individually within large limits, with the frequency of abdominal pulsations being six to seven times lower than that of the heart pulses. A proportion of the pupae (20%) showed discontinuous gas exchange with large, actively ventilated CO2 bursts, whereas others (≈ 25%) exhibited continuous regular microcycles (flutter) with abrupt intake of air into the tracheae before discrete microbursts of carbon dioxide. The abdominal pulsations exerted only a minor influence on ventilation during the microcycles. More than 90% of the bursts of abdominal movement coincided with a series of forward directed heartbeats, but interspersed between the bouts of abdominal movement commonly two to three heartbeat pulses were observed that were not associated with abdominal movements. A period of abdominal movement associated with a heartbeat pulse was commonly initiated by one or two vigorous strokes of abdominal rotation.

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Periodic muscular activity and its possible functions in pupae of Tenebrio molitor

Cited by 18 publications

References 11 publications

Diversity in gas exchange and muscular activity patterns in insects studied by a respirometer‐actograph

Diversity in gas exchange and muscular activity patterns in insects studied by a respirometer‐actograph

Discontinuous gas exchange cycles and active ventilation in pupae of the bumblebee Bombus terrestris

Abdominal movements, heartbeats and gas exchange in pupae of the Colorado potato beetle, Leptinotarsa decemlineata

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