Energetic loads and informational entropy during insect metamorphosis: Measuring structural variability and self-organization

Damos, Petros; Papadopoulos, Nikos T.; Rigas, A. G.; Savopoulou-Soultani, Μ.

doi:10.1016/j.jtbi.2011.06.029

Cited by 7 publications

(3 citation statements)

References 57 publications

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“…43 These results highlighted the importance of pollen in pupal development of some insects. Metamorphosis development, from pupa to adult, is an intricate biochemical process 44 precisely controlled by hormonal and nutritional signals. 45,46 However, the role of pollen in the nutritional ecology of coccinellids remains unclear.…”

Section: Discussionmentioning

confidence: 99%

Canola bee pollen is an effective artificial diet additive for improving larval development of predatory coccinellids: a lesson from Harmonia axyridis

Sun,

Chen,

Hao

et al. 2024

Pest Management Science

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BACKGROUNDPollen is a common plant‐derived food source for predatory ladybird beetles under field conditions, while the potential for pollen to improve the quality of artificial diets remains largely unexplored. In this study, we developed three pollen diets by incorporating varying proportions of canola bee pollen (7.5%, 15.0%, and 22.5% with proportioned water) into a conventional diet. The feeding efficiency of Harmonia axyridis, an omnivorous predator, was evaluated and compared on three pollen diets, a conventional non‐pollen diet and pea aphids.RESULTSThe larvae fed a medium or high pollen diet exhibited significantly higher survival in the fourth instar, pupa and adult stages than those fed a non‐pollen diet. These larvae also developed into significantly heavier adults, and their survival rates in adulthood were comparable to those fed pea aphids. Specifically, we revealed the underlying mechanisms through which a high pollen diet enhances pupal development. Consumption of high pollen diet versus non‐pollen diet resulted in a significant decrease in pupal glycogen content but an increase in adult lipid content. Both diet treatments induced similar changes in carbohydrate and glycogen content compared to the aphid diet while exhibiting different alterations in pupal protein content and adult lipid content. Furthermore, the transcriptome analysis revealed that the nutrient metabolism, immune response, and cuticle development pathways were predominantly enriched among the differentially expressed genes (DEGs).CONCLUSIONCanola bee pollen offers diverse advantages in terms of rearing H. axyridis larvae with an artificial diet, which will advance the development of effective diets for predaceous coccinellids.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Canola bee pollen is an effective artificial diet additive for improving larval development of predatory coccinellids: a lesson from Harmonia axyridis

Sun,

Chen,

Hao

et al. 2024

Pest Management Science

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“…We further associate an entropy H i indicating the average amount of uncertainty of the population system for moving one step ahead when starting with state S i (Shannon, 1948;Reza, 1994;Damos et al, 2011a;Damos, 2012):…”

Section: Dynamic Population Entropymentioning

confidence: 99%

Mixing times towards demographic equilibrium in insect populations with temperature variable age structures

Damos

2015

Theoretical Population Biology

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“…where pij stands for the probability of any one of a discrete chain moving from the ith to the jth state. Therefore, in comparison to Demographic entropy as a statistical standard measure, the Markovian entropy has dynamical meaning since it touches the average uncertainty of the system for moving one step forward when starting with one given initial state [12]:…”

Section: Convergence Rates Of Population Entropy Towards Equilibriummentioning

confidence: 99%

Bio demographic aspects of population entropy in quantifying population heterogeneity and its consequences for population fitness and species adaptation

Damos

2015

Proceedings of 2nd International Electronic Conference on Entropy and Its Applications

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Entropy is a well-established measure of population variability and already used in contingency in life table analysis to capture the trends of population heterogeneity. However, entropy has been also utilized as a more general dynamic measure of species fitness and adaptation to varying ecological conditions. In this study we are concerned with a brief account of the latter. In principle, such demographic-population entropy is an analogue of the Gibbs-Boltzmann entropy in statistical mechanics, H=-Σpilnpi. Here, pi represents the probability density function of the age of reproducing individuals and therefore maximization of entropy is equivalent to maximization of the uncertainty of age reproduction. Moreover, considering that demographic dynamics are formally equivalent to the dynamics of a Markov chain, demographic entropy may be used to estimate the convergence rate of insect population transitions to the stable age distributions and demographic equilibriums under certain conditions. By interpreting population entropy as a distance measure between the variability of the mortality distribution where no outside forces interfere and the conditional entropy estimated given the known unperturbed reference mortality we may quantify species adaptive value. Through this operation, populations with the favored demographic properties gradually develop fitness advantages in the presence of the artificial selection factor.

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Energetic loads and informational entropy during insect metamorphosis: Measuring structural variability and self-organization

Cited by 7 publications

References 57 publications

Canola bee pollen is an effective artificial diet additive for improving larval development of predatory coccinellids: a lesson from Harmonia axyridis

Canola bee pollen is an effective artificial diet additive for improving larval development of predatory coccinellids: a lesson from Harmonia axyridis

Mixing times towards demographic equilibrium in insect populations with temperature variable age structures

Bio demographic aspects of population entropy in quantifying population heterogeneity and its consequences for population fitness and species adaptation

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