Abstract:
:Overwintering freeze-tolerant larvae of Chilo suppressalis can survive at -25 degrees C, but non-diapausing larvae cannot. We reported earlier that to prevent intracellular freezing, which causes death in overwintering larvae of the Saigoku ecotype distributed in southwestern Japan, water leaves and glycerol enters fat body cells through water channels during freezing. However, it is still unclear how diapause and low-temperature exposure are related to the acquisition of freeze tolerance. We compared the extent of tissue damage, accumulation of glycerol, and transport of glycerol and water in fat body tissues between cold-acclimated and non-acclimated non-diapausing and diapausing larvae. The tissue from cold-acclimated diapausing larvae could survive only when frozen in Grace's insect medium with 0.25 M glycerol at -20 degrees C. The protection provided by glycerol was offset by mercuric chloride, which is a water-channel inhibitor. Fat body tissue isolated from non-acclimated diapausing larvae was injured by freezing even though glycerol was added to the medium, but the level of freezing injury was significantly lower than in non-diapausing larvae. Radiotracer assays in cold-acclimated diapausing larvae showed that during freezing, water left the cells into the medium and glycerol entered the cells from the medium at the same time. Therefore, in Saigoku ecotype larvae of the rice stem borer, both diapause and cold-acclimation are essential to accumulate glycerol and activate aquaporin for the avoidance of freezing injury.
journal_name
J Insect Physioljournal_title
Journal of insect physiologyauthors
Izumi Y,Sonoda S,Tsumuki Hdoi
10.1016/j.jinsphys.2007.04.005subject
Has Abstractpub_date
2007-07-01 00:00:00pages
685-90issue
7eissn
0022-1910issn
1879-1611pii
S0022-1910(07)00106-0journal_volume
53pub_type
杂志文章abstract::Oocyte counts, used as a measure of egg load, were compared among three different age groups (15, 30 and 45 days) of two polyphagous species of tephritid fruit flies, Anastrepha ludens and Anastrepha obliqua, which were exposed to varying conditions of diet (sucrose vs sucrose and protein), availability of oviposition...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(01)00072-5
更新日期:2001-09-01 00:00:00
abstract::The influence of the following heavy metals, copper (Cu), zinc (Zn), cadmium (Cd) and lead (Pb), on haemocytes of the house fly Musca domestica L. was studied under laboratory conditions. House fly larvae were exposed to low or high, semi-lethal concentrations of metals. These particular metals were selected because t...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.02.012
更新日期:2011-06-01 00:00:00
abstract::The Southern house mosquito Culex quinquefasciatus has the largest repertoire of odorant receptors (ORs) of all mosquitoes and dipteran species whose genomes have been sequenced to date. Previously, we have identified and de-orphanized two ORs expressed in female antennae, CquiOR2 and CquiOR10, which are sensitive to ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2013.07.004
更新日期:2013-09-01 00:00:00
abstract::In ants, both cuticular and postpharyngeal gland (PPG) hydrocarbons (HCs) have been involved in nestmate recognition. However, no detailed comparison is available. A comparative study including also high density lipophorin (HDLp), an internal HC carrier, was therefore undertaken on Pachycondyla villosa. Purified HDLp ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2004.04.006
更新日期:2004-07-01 00:00:00
abstract::Juvenile hormone (JH) produced by the corpus allatum (CA) stimulates vitellogenesis and reduces the synthesis of hexamerin proteins in adult females of Pyrrhocoris apterus. At present it is unknown whether the signaling pathway involving the JH receptor gene Methoprene tolerant (Met) and its binding partner Taiman (Ta...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2016.08.009
更新日期:2016-01-01 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::A diapause-specific peptide (DSP) composed of 41 amino acid residues including 6 cysteines, has been isolated from diapausing adults of the leaf beetle Gastrophysa atrocyanea. In this study, DSP was found to be expressed primarily in diapausing adults and to a minor extent in pupae, but not in eggs, larvae, or post-di...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2005.03.018
更新日期:2005-06-01 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::Although scientists know that overheating kills many organisms, they do not agree on the mechanism. According to one theory, referred to as oxygen- and capacity-limitation of thermal tolerance, overheating occurs when a warming organism's demand for oxygen exceeds its supply, reducing the organism's supply of ATP. Thi...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2020.104157
更新日期:2020-01-01 00:00:00
abstract::An important component of South Africa's malaria elimination agenda is identifying the entomological drivers of residual transmission, especially those that present opportunities for enhanced vector control. Seasonal mosquito density correlates directly with malaria transmission in South Africa. Transmission is highes...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.103942
更新日期:2019-10-01 00:00:00
abstract::A new equine abortigenic disease, mare reproductive loss syndrome (MRLS), was recognized and significantly impacted the Ohio Valley in the springs of 2001 and 2002. MRLS caused approximately 330 million US dollars in losses in 2001. An epidemiological investigation of MRLS associated occurrence of the disease with exp...
journal_title:Journal of insect physiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.jinsphys.2003.11.008
更新日期:2004-02-01 00:00:00
abstract::The timing of pupal commitment of the forewing imaginal discs of the silkworm, Bombyx mori, was determined by a transplantation assay using fourth instar larvae. The wing discs were not pupally committed at the time of ecdysis to the fifth instar. Pupal commitment began shortly after the ecdysis and was completed in 1...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(02)00160-9
更新日期:2002-10-01 00:00:00
abstract::Molecular studies on Drosophila melanogaster do not provide consistent results with regard to the hormonal regulation of a trade-off between life-span and fecundity. To unravel the physiological basis of the cost of reproduction without affecting animal's genotype, a new insect model, Pyrrhocoris apterus, was employed...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2007.11.011
更新日期:2008-02-01 00:00:00
abstract::Hemocytes and the (prophenol-) phenoloxidase system constitute the immediate innate immune system in insects. These components of insect immunity are present at any post-embryonic life stage without previous infection. Differences between individuals and species in these immune parameters can reflect differences in in...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2007.11.002
更新日期:2008-02-01 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 has been successfully used in adult honeybees, but there are only few reports about abdominal application of dsRNA/siRNA which have reached more distant tissues than the fat body. We studied systemic RNAi in honeybees by injecting fluorescent siRNA of the ubiquitously expressed honeybee homologue of t...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.03.013
更新日期:2011-07-01 00:00:00
abstract::The corpora cardiaca (CC) of the Italian race (including also the africanised variety) of the honeybee (Apis mellifera ligustica) contain approximately 3 pmol of a hypertrehalosaemic peptide. This peptide is identical in structure to the adipokinetic hormone (AKH) found in Manduca sexta, Mas-AKH. The CC of the dark Eu...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(98)00158-9
更新日期:1999-07-01 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::We report on the transcriptional patterns of three antibacterial genes, a defensin (MdesDEF-1), a diptericin (MdesDIP-1) and a lysozyme (MdesLYS-1), during development in Hessian fly, Mayetiola destructor. Quantitative analysis by real-time PCR of mRNA levels in different tissues revealed a predominance of the transcr...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.08.007
更新日期:2006-11-01 00:00:00
abstract::The flightless bug Pyrrhocoris apterus (L.) is polymorphic for both wing length and flight muscle development. The developed flight muscles of macropterous adults of both sexes first enlarge their volume during the first 5 days after adult emergence, but are then histolyzed in all males and females older than 10 and 1...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2005.10.009
更新日期:2006-03-01 00:00:00
abstract::The level of response to sugar plays a role in many aspects of honey bee behavior including age dependent polyethism and division of labor. Bees may tune their sensitivity to sugars so that they maximize collection of high quality nectar, but they must also be able to collect from less profitable sources when high qua...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.05.002
更新日期:2019-07-01 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::Polydnaviruses are unique because of their obligatory association with thousands of parasitoid wasp species from the braconid and ichneumonid families of hymenopterans. PDVs are injected into the parasitized hosts and are essential for parasitism success. However, polydnaviruses are also unique because of their genome...
journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
doi:10.1016/s0022-1910(03)00058-1
更新日期:2003-05-01 00:00:00
abstract::The two-spotted spider mite, Tetranychus urticae was exposed to UV-C (250 nm), UV-B (300 nm), and UV-A (350 nm). In non-diapausing females, the median effective doses for 50% mortality plus escape incidence (ED(50)) were 21 (UV-C) and 104 kJm(-2) (UV-B); those for 50% oviposition rate in continuous darkness-treated mi...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2009.04.005
更新日期:2009-07-01 00:00:00
abstract::Protease inhibitors (PIs) have been shown to cause lethal and sublethal effects on aphids depending on the kind of PI and aphid species. Therefore, these proteins might affect aphid parasitoids directly by inhibiting their digestive proteolysis or indirectly via their development in a less suitable host. In our study,...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2005.04.009
更新日期:2005-08-01 00:00:00
abstract::The presence of two spectral mechanisms, near-ultraviolet and green (lambda(max)=545nm), is strongly suggested by electroretinographic visual spectral sensitivity curves obtained under dark and red chromatic adaptation conditions in the compound eyes of the click beetle Pyrophorus punctatissimus. The bioluminescence e...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(99)00224-3
更新日期:2000-07-01 00:00:00
abstract::The rice brown planthopper, Nilaparvata lugens, is an important migratory pest in many rice planting areas of Asia. The typical wing dimorphism of N. lugens gives them flexibility to adapt to different environmental cues. As an important hormone in the insect's endocrine regulation, juvenile hormone (JH) has previousl...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2017.08.012
更新日期:2017-10-01 00:00:00
abstract::The effects of deprivation of oviposition substrate on food consumption and egg production were compared between the long-winged (LW) and the short-winged (SW) morph of a cricket, Modicogryllus confirmatus, to determine how suppressed oviposition activity would influence these traits in each wing morph. Food consumpti...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(00)00094-9
更新日期:2001-01-01 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::The action of juvenile hormone (JH) and JH mimics have been examined in vitro by utilizing the imaginal disc-derived cell line, IAL-PID2. We have discovered that the cell line was responsive to JH and a variety of JH mimics. The most consistent response obtained in our studies was inhibition of cell proliferation, in ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(99)00178-x
更新日期:2000-03-01 00:00:00