Calorespirometric determination of the effects of temperature, humidity, low O2 and high CO2 on the development of Musca domestica pupae

Joyal, J. J.; Hansen, Lee D.; Coons, D. R.; Booth, Gary M.; Smith, Bruce N.; Mill, D. D.

doi:10.1007/s10973-005-6879-1

Cited by 6 publications

(11 citation statements)

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“…The metabolism of living organisms can be measured as the rate of heat emission, CO 2 production, and O 2 consumption [ 49 ]. Our analyses showed that an increase in temperature from 20 to 25 and 28 °C caused an increase in the specific thermal power of aphids, most notably at 28 °C ( Figure 4 ).…”

Section: Discussionmentioning

confidence: 99%

Enzymatic Defense Response of Apple Aphid Aphis pomi to Increased Temperature

Dampc

Kula-Maximenko

Mołoń

et al. 2020

Insects

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Climate change, and in particular the increase in temperature we are currently observing, can affect herbivorous insects. Aphids, as poikilothermic organisms, are directly exposed to temperature increases that influence their metabolism. Heat stress causes disturbances between the generations and the neutralization of reactive oxygen species (ROS). The aim of this work is focused on explaining how the aphid, using the example of Aphis pomi, responds to abiotic stress caused by temperature increase. The experiment was carried out under controlled conditions at three temperatures: 20, 25, and 28 °C. In the first stage, changes in the activity of enzymatic markers (superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), β-glucosidase, polyphenol oxidase (PPO), and peroxidase (POD)) were determined in aphid tissues, at each temperature. In the second stage, microcalorimetry monitored changes in heat emitted by aphids, at each temperature. Our results showed that A. pomi defense responses varied depending on temperature and were highest at 28 °C. The flexible activity of enzymes and increase in the metabolic rate played the role of adaptive mechanisms and ran more effectively at higher temperatures. The A. pomi thus protected itself against ROS excessive induction and the aphids were able to respond quickly to environmental stress.

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Section: Discussionmentioning

confidence: 99%

Enzymatic Defense Response of Apple Aphid Aphis pomi to Increased Temperature

Dampc

Kula-Maximenko

Mołoń

et al. 2020

Insects

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“…; Joyal et al. ). It has generally attracted the attention of physiological ecologists because it has an impact on the amount of energy available for activity and production (Steyermark ) and, together with the ability to maintain water balance, could contribute to the variation in various life history traits across a range of environments (Prior et al.…”

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confidence: 97%

Repeatability of energy metabolism and resistance to dehydration in the invasive slug Limax maximus

Gaitán‐Espitía

Franco

Bartheld

et al. 2012

Invertebrate Biology

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Abstract. Standard metabolic rate (SMR) and resistance to body dehydration (BD) are important physiological traits that have an effect on water balance and the amount of energy available for activity and production, and thus could contribute to variation in life history traits expressed across a range of environments. Few studies have tested whether SMR and BD show consistent between-individual variation in molluscs. Significant repeatability of SMR and BD indicates that the traits might be heritable and therefore a possible target for natural selection, so describing the repeatability of SMR and BD is important in studies of phenotypic variability. Here, we studied energy metabolism (body mass-corrected SMR) and the change in the scaling relationship of SMR and body mass in response to time between measurements in the giant garden slug Limax maximus. Limax maximus is one of the most invasive terrestrial molluscs, with a wide geographical distribution, and is considered an important pest of horticultural and agricultural crops. Our results show that L. maximus follows the expected relationship of increasing SMR with increasing mass, but the scaling exponent varies through time and is different from that described for other gastropods. We also found significant inter-individual variation in VCO 2 Mean , VCO 2 Min , VCO 2 Max , and BD (τ=0.25, 0.29, 0.24, 0.22, p<0.05, respectively), and significant repeatability of body mass (τ=0.90). To our knowledge, this is the first comprehensive analysis of the repeatability of body mass-corrected SMR and BD in terrestrial slugs. Our results suggest that energy metabolism and water balance could potentially respond to selection.

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“…Heat generation is a product of metabolism commonly used to differentiate diapausing (low metabolic activity) from nondiapausing (high metabolic activity) insects (Acar et al 2001(Acar et al , 2004JacoboÐCuel-lar et al 2004;Joyal et al 2005).The production of metabolic heat by overwintering larvae was used as an indicator of their physiological state in two contrasting treatments, Western Schley shoot extract (WES) and a water control. Metabolic heat was measured with a multi-cell differential scanning calorimeter (CSC 4100; Calorimetry Science Corporation, Pleasant Grove, UT) working in the isothermal mode at 25ЊC for 30,000 s. The instrument has a baseline sensitivity Ϯ1 W and a working range of Ϫ30 to 110ЊC.…”

Section: Uninfestedmentioning

confidence: 99%

“…Previous work by our group has shown overwintering larvae became physically active on exposure to newly growing buds with foliar growth of 1Ð5 cm in length (Fu-Castillo et al 2010); determining the physiological state of these larvae just before activation was a principal goal of the current study. Heat generation is a product of metabolism that helps to differentiate an insect that is in a state of diapause or postdiapause quiescence from nondiapausing insects (Acar et al 2001(Acar et al , 2004JacoboÐCuellar et al 2004;Joyal et al 2005) and was used as an indicator of the physiological state of larvae in this work.…”

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confidence: 99%

Semiochemicals Released by Pecan Alleviate Physiological Suppression in Overwintering Larvae of Acrobasis nuxvorella (Lepidoptera: Pyralidae)

et al. 2013

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Acrobasis nuxvorella Neunzig (pecan nut casebearer) is a monophagous herbivore of Carya illinoinensis (Wang.) K. Koch (pecan); both are indigenous to North America, where Carya has evolved for ≈60 million years. We hypothesized that this close association may have resulted in a parallel evolution allowing casebearer to use pecan volatiles to synchronize seasonality. Casebearer overwinters in diapause as a first-instar larva in a hibernaculum attached to a dormant pecan bud. Larval emergence from this structure after diapause or postdiapause quiescence coincides with the onset of pecan bud growth in the spring, and this interaction was the subject of this study. Dormant pecan twigs with hibernacula-infested buds were exposed to a water control or pecan volatiles from 'Western Schley' cultivar, and monitored to observe larval response by using a microcalorimeter. Initial testing showed that metabolic heat produced by overwintering larvae remained low and unchanged when exposed to water vapor and significantly increased within a few hours after exposure to volatiles from new pecan foliage. This shows that these larvae in hibernacula are in a physiologically suppressed state of diapause or postdiapause quiescence, from which they detect and respond to these pecan volatiles. Further studies to quantify larval responses showed that 90 and 80% of the larvae became active and emerged from their hibernacula ≈6 d after exposure to Western Schley and 'Wichita' volatiles, respectively. Mixtures of 13 sesquiterpenes from those pecan volatiles were identified to induce physiological activity within larvae after hours of exposure, followed some days later by larval emergence from hibernacula. Host volatiles, to our knowledge, have not previously been reported to induce early instar larvae in hibernacula to rouse from a state of physiological arrest to resume normal growth and development. This also has potential for use in pest management.

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Calorespirometric determination of the effects of temperature, humidity, low O2 and high CO2 on the development of Musca domestica pupae

Cited by 6 publications

References 0 publications

Enzymatic Defense Response of Apple Aphid Aphis pomi to Increased Temperature

Enzymatic Defense Response of Apple Aphid Aphis pomi to Increased Temperature

Repeatability of energy metabolism and resistance to dehydration in the invasive slug Limax maximus

Semiochemicals Released by Pecan Alleviate Physiological Suppression in Overwintering Larvae of Acrobasis nuxvorella (Lepidoptera: Pyralidae)

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