Abstract:
:The way energy resources are used under variable environmental conditions lies at the heart of our understanding of resource management and opportunism in many organisms. Here we sought to determine how a time-limited, synovigenic and polyphagous insect with a high reproductive-potential (Anastrephaludens), copes behaviourally and metabolically with environmental unpredictability represented by constant and variable regimes of host availability and variation in food quality. We hypothesized that an adaptive response to a windfall of nutritious food would be the rapid accumulation of energy metabolites (whole body lipids, glycogen and proteins) in the female. We also studied patterns of oogenesis as an indicator of egg-reabsorption under stressful environmental conditions. As predicted, patterns of energy metabolites were mainly driven by the quality and temporal pattern of food availability. In contrast, patterns of host availability had a lower impact upon metabolites. When given constant access to high quality nutrients, after an initial increase early in life, whole body lipids and glycogen were regulated downward to a steady-state level and somatic protein levels did not vary. In contrast, when food uncertainty was introduced, whole body lipid, glycogen and protein oscillated sharply with peaks associated with pulses of high-quality food. Production of eggs was highest when offered continuous access to hosts and high quality food. Importantly, females fully recovered their reproductive capacity when fruit became available following a period of host deprivation. With no evidence of egg resorption and high levels of egg dumping, it appears that egg dumping may favour the continuous production of eggs such that the female's reproductive tissues are ready to respond to rapid changes in the availability of hosts. Our results exemplify the capacity of insects to maximize reproduction under variable and stressful environmental conditions.
journal_name
J Insect Physioljournal_title
Journal of insect physiologyauthors
Aluja M,Birke A,Guillén L,Díaz-Fleischer F,Nestel Ddoi
10.1016/j.jinsphys.2011.08.001subject
Has Abstractpub_date
2011-12-01 00:00:00pages
1592-601issue
12eissn
0022-1910issn
1879-1611pii
S0022-1910(11)00223-Xjournal_volume
57pub_type
杂志文章abstract::Orcokinins (OKs) are neuropeptides that were first identified in crustacean through their myotropic activity. In insects, the OK gene gives rise to two mRNAs coding for two different families of conserved mature neuropeptides: OKA and OKB. Although OKs are conserved in many insect species, its physiological role in th...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2015.10.002
更新日期:2015-11-01 00:00:00
abstract::Caddisflies, whose aquatic larvae build a portable case with silk, are a suitable model organism to test the impacts of resource allocation trade-off during development and examine the evolution of life-history strategies. In the caddisfly Limnephilus rhombicus, adult feeding is minimal. Therefore, the whole resources...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.11.009
更新日期:2011-01-01 00:00:00
abstract::Several mutants of the silkworm Bombyx mori show body color variation at the larval and adult stages. The Wild wing spot (Ws) mutant exhibits a phenotype in which the moth has a spot on the apex of the forewing. In this study, we investigated this trait to elucidate the molecular mechanism underlying the color pattern...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2016.07.004
更新日期:2016-08-01 00:00:00
abstract::A population of the fruit fly Drosophila melanogaster was raised in periodic light/dark (LD) cycles of 12:12 h for about 35 generations. Eclosion, locomotor activity, and oviposition were found to be rhythmic in these flies, when assayed in constant laboratory conditions where the light intensity, temperature, humidit...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(01)00107-x
更新日期:2001-09-01 00:00:00
abstract::The effect of using acaricides to control varroa mites has long been a concern to the beekeeping industry due to unintended negative impacts on honey bee health. Irregular ontogenesis, suppression of immune defenses, and impairment of normal behavior have been linked to pesticide use. External stressors, including par...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.12.011
更新日期:2012-05-01 00:00:00
abstract::Following a short swarming flight, winged adults of the Formosan subterranean termite, Coptotermes formosanus lose their wings and form tandem pairs. These dealates or primary reproductives then form incipient colonies. Topical application of 5 microg of the non-steroidal ecdysone agonist RH-0345 (halofenozide) in 0.1...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(03)00069-6
更新日期:2003-07-01 00:00:00
abstract::Ultraviolet (UV) radiation produces reactive oxygen species (ROS) in mammals, where melatonin plays the role of a ROS scavenger. The melatonin synthetic enzyme arylalkylamine N-acetyltransferase (NAT) is a significant element in a possible ROS removal system. Changes in NAT activity and melatonin content were determin...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2008.06.005
更新日期:2008-07-01 00:00:00
abstract::This study gives the first electrophysiological evidence of hygroreceptors in carabids. Extracellular recordings from the antennal dome-shaped sensilla of the carabid beetle Pterostichus oblolongopunctatus (Coleoptera, Carabidae) clearly show the presence of moist and dry neuron antagonistically responding to humidity...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.06.017
更新日期:2010-11-01 00:00:00
abstract::Insect molting and metamorphosis are controlled by the molt stimulating hormone ecdysone. A recent study suggests that reduced tissue oxygenation correlates with the size-sensing mechanism responsible for triggering molting. When reared in hypoxia, larvae of Manduca sexta and Drosophila melanogaster initiate molting a...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2015.02.009
更新日期:2015-05-01 00:00:00
abstract::Metabolic respiration by groups of resting Myrmica ruginodis and M. scabrinodis worker ants from five sites representing a range of latitudes, have been compared by measuring rates of CO(2) production-standardised by fat-free weight-at 5 and 25 degrees C. M. ruginodis which lives in cooler habitats than M. scabrinodis...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(98)00162-0
更新日期:1999-06-01 00:00:00
abstract::Tri-trophic impacts on adult predatory carabid beetles, Ctenognathus novaezelandiae, of insect-resistant transgenic tobacco plants expressing a serine protease inhibitor, bovine spleen trypsin inhibitor (BSTI), or a biotin-binding protein, avidin, were investigated. Both proteins could potentially affect this beetle, ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2007.12.002
更新日期:2008-02-01 00:00:00
abstract::Diapause is an alternate developmental pathway that is regulated by the neuroendocrine system in insects. To date, much of the information that has been published regarding the possible molecular events associated with diapause have been at the level of transcription. However, since transcription and translation are n...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.03.022
更新日期:2011-05-01 00:00:00
abstract::Elucidating the mechanisms by which honey bees process pollen vs. protein supplements are important in the generation of artificial diets needed to sustain managed honeybees. We measured the effects of diet on protein concentration, hypopharyngeal gland development and virus titers in worker honey bees fed either poll...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.03.017
更新日期:2010-09-01 00:00:00
abstract::Susceptibility to the fungus Metarhizium robertsii and changes in host defences were evaluated in different stages of the intermoult period (4-6 h, 34-36 h and 84-86 h post moult in IV larval instars) of the Colorado potato beetle. A significant thickening of the cuticle during larval growth was accompanied by decreas...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.05.003
更新日期:2019-07-01 00:00:00
abstract::Winter severity and overwintering capacity are key ecological factors in successful invasions, especially in ectotherms. The integration of physiological approaches into the study of invasion processes is emerging and promising. Physiological information describes the mechanisms underlying observed survival and reprod...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2016.03.009
更新日期:2016-06-01 00:00:00
abstract::In this study we probe the molecular events underpinning diapause observed in overwintering females of Culex pipiens. Using suppressive subtractive hybridization (SSH) we have identified 40 genes that are either upregulated or downregulated during this seasonal period of dormancy. Northern blot hybridizations have con...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.08.008
更新日期:2007-03-01 00:00:00
abstract::Nine neuropeptides isolated from Drosophila melanogaster and five neuropeptides, previously isolated from the CNS of Limulus with antisera to FMRFamide-related peptides, were tested for their effects on the myogenic heart of Drosophila melanogaster. Of the native peptides, TDVDHVFLRF-NH(2) (Dromyosuppressin), DPKQDFMR...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(00)00043-3
更新日期:2000-08-01 00:00:00
abstract::Honey bees have brain structures with specialized and developed systems of communication that account for memory, learning capacity and behavioral organization with a set of genes homologous to vertebrate genes. Many microtubule- and actin-based molecular motors are involved in axonal/dendritic transport. Myosin-Va is...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.06.005
更新日期:2011-09-01 00:00:00
abstract::In independent assays, workers of the ant Camponotus mus were conditioned to visit an arena where they found a large drop of sucrose solution of different concentrations, from 5 to 70% weight on weight (w/w). Single ants were allowed to collect the sucrose solution ad libitum, and feeding time, feeding interruptions, ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(98)00053-5
更新日期:1998-07-01 00:00:00
abstract::RNA interference (RNAi) is a powerful tool for artificially manipulating gene expression in diverse organisms. In the honey bee, Apis mellifera, both long double stranded RNA (dsRNA) and small interference RNA (siRNA) have been successfully used to reduce targeted gene expression and induce specific phenotypes. Howeve...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2018.10.005
更新日期:2018-01-01 00:00:00
abstract::Molecular genetic markers can be used to identify quantitative trait loci (QTL) for thermal resistance and this has allowed characterization of a major QTL for knockdown resistance to high temperature in Drosophila melanogaster. The QTL showed trade-off associations with cold resistance under laboratory conditions. Ho...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.05.013
更新日期:2011-09-01 00:00:00
abstract::In insects, especially in mosquitoes that are adult blood feeders, midgut remodeling is an important event during metamorphosis. It involves two processes viz., programmed cell death (PCD) of larval cells, and proliferation and differentiation of imaginal cells to form pupal/adult midgut. These processes are regulated...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.09.009
更新日期:2007-03-01 00:00:00
abstract::During holometabolous insect development the critical weight marks a physiological transition after which juvenile hormone (JH) concentration decreases to such a level that a subsequent increase in ecdysone titer will initiate metamorphosis. Starvation experiments indicate that the Aedes aegypti critical weight is ach...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.09.014
更新日期:2007-01-01 00:00:00
abstract::Plant-derived trypsin inhibitors have been shown to have potent anti-insect effects and are a promising alternative for the biological control of pests. In this work, we tested the anti-insect activity of Adenanthera pavonina trypsin inhibitor (ApTI) against Diatraea saccharalis larvae, a major insect pest in sugarcan...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2013.11.012
更新日期:2014-02-01 00:00:00
abstract::Experiments were conducted to determine the performance and host preference of Ascia monuste using kale (Brassica oleraceae, var. Acephala) and mustard (B. juncea). These plants differ significantly in water and nitrogen content, with mustard having larger amounts of water and kale larger amounts of nitrogen. The perf...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(98)00094-8
更新日期:1999-01-01 00:00:00
abstract::Worker honeybees (Apis mellifera) are morphologically four-winged, but are functionally dipterous insects. During flight, their fore- and hindwings are coupled by means of the forewing posterior rolled margin (PRM) and hindwing hamuli. Morphological analysis shows that the PRM can be connected to the hamuli, so that t...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.103936
更新日期:2019-10-01 00:00:00
abstract::Heat is the principal host-associated cue for the blood-sucking bug Rhodnius prolixus. It is both necessary and sufficient to trigger the "proboscis extension response" (PER), an essential element of the feeding behaviour of this insect. The aim of this study was to determine whether the temperature of an object itsel...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.07.012
更新日期:2011-10-01 00:00:00
abstract::In this study, we investigated activation of the extracellular signal-regulated kinase (ERK) by the prothoracicotropic hormone (PTTH) in prothoracic gland cells of the silkworm, Bombyx mori. The results showed that the PTTH stimulated ERK phosphorylation as this depends on time and dose and ecdysteroidogenic activity....
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2007.03.004
更新日期:2007-06-01 00:00:00
abstract::Certain male fruit flies from the genera Bactrocera and Zeugodacus (Diptera: Tephritidae) actively forage for floral semiochemicals produced by some endemic Bulbophyllum orchids found in tropical and subtropical forests. These floral semiochemicals are largely classified as either phenylbutanoids (e.g., raspberry keto...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.103949
更新日期:2019-01-01 00:00:00
abstract::Experiments were performed on adult wild Anastrepha obliqua females to (I) determine whether there is a critical period during the reproductive phase when the absence of protein in the diet impairs egg production; (II) determine whether the females are able to self-select an optimal diet; and (III) determine the discr...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(01)00093-2
更新日期:2001-09-01 00:00:00