Abstract:
:The parasitic mite Varroa destructor is regarded as the most important parasite of honey bees and plays a fundamental role in the decline of bee colonies observed in the last decade in the Northern hemisphere. Parasitization has a number of detrimental effects on bees, including reduced nursing, which can have important impacts on colony balance. In this work we investigated at the individual level the causes of this abnormal behavior and found that the reduced nursing activity in mite-infested workers is associated with impaired learning performance and a series of physiological traits that are typical of foragers, including reduced response to brood pheromone, limited development of hypopharyngeal glands and higher juvenile hormone titre in the haemolymph. Altogether our data confirm the premature transition to foraging already postulated based on previous genomics studies, from a physiological point of view.
journal_name
J Insect Physioljournal_title
Journal of insect physiologyauthors
Zanni V,Değirmenci L,Annoscia D,Scheiner R,Nazzi Fdoi
10.1016/j.jinsphys.2018.06.006subject
Has Abstractpub_date
2018-01-01 00:00:00pages
47-54eissn
0022-1910issn
1879-1611pii
S0022-1910(18)30079-9journal_volume
109pub_type
杂志文章abstract::At 25 degrees C and under a long-day photoperiod, all 5th instar Psacothea hilaris larvae pupate at the next molt. Under a short-day photoperiod, in contrast, they undergo one or two additional larval molts and enter diapause; the 7th instar larvae enter diapause without further molt. The changes in hemolymph juvenile...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2004.09.009
更新日期:2004-11-01 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::Nine-day-old decapitated females injected with different doses of Hez-PBAN produced significantly less pheromone than 1-day-old individuals, suggesting that the age-related decline in the pheromone titre of Choristoneura fumiferana and C. rosaceana virgin females was primarily the result of a reduced ability of the gl...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(02)00252-4
更新日期:2003-01-01 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::Chemical signals in insects have been documented to play an important role in mate recognition, and divergence in chemical signals can often cause sexual isolation between closely related species or populations within species. We investigated the role of cuticular hydrocarbons (CHCs), short distance chemical signals, ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2014.08.006
更新日期:2014-11-01 00:00:00
abstract::The occurrence of climatic adaptation in Drosophila melanogaster is highlighted by the presence of latitudinal clines in several quantitative traits, particularly clines in adult heat knockdown tolerance that is higher in tropical populations. However the presence of latitudinal patterns in physiological characteristi...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2013.12.003
更新日期:2014-01-01 00:00:00
abstract::Haemocytes play crucial roles in immune responses and survival in insects. Specific cell markers have proven effective in clarifying the function and haematopoiesis of haemocytes. The silkworm Bombyx mori is a good model for studying insect haemocytes; however, little is known about haemocyte-specific markers or their...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2014.10.007
更新日期:2014-12-01 00:00:00
abstract::Larvae of the west-Japan type yellow-spotted longicorn beetle, Psacothea hilaris (Coleoptera: Cerambycidae), show a long-day type photoperiodic response at 25 degrees C; under long-day conditions, larvae pupate after the fourth or fifth instar, while under short-day conditions, they undergo a few nonstationary supernu...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(03)00167-7
更新日期:2003-10-01 00:00:00
abstract::Attraction of many gravid female herbivore insects to suitable host plants is mediated largely by olfactory cues. Behaviorally, synergism among odor mixtures constituents underlies this attraction in some systems. Yet, the representation of synergistic odor-mixture effects is unknown in the antennal lobe, the first pr...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2007.10.002
更新日期:2008-02-01 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::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::Asobara japonica (Braconidae) is an endophagous parasitoid developing in Drosophila larvae. The present study shows that A. japonica was never encapsulated in Drosophila melanogaster, and that it caused an overall inhibition of the host encapsulation reaction since injected foreign bodies were never encapsulated in pa...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2009.09.001
更新日期:2010-01-01 00:00:00
abstract::Dopamine is a potential integrator between the central nervous system and reproductive system in insects. To test for a possible action of dopamine on the male reproductive organ via hemolymph in honey bees, relative expression levels of dopamine receptor genes and second messenger levels responding to dopamine in the...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2018.11.005
更新日期:2019-01-01 00:00:00
abstract::We found that in the flesh fly Neobellieria bullata, vitellogenesis can be inhibited in a dose-dependent way by two injections of 60 microg MK-801/g body mass. In the desert locust Schistocerca gregaria, vitellogenesis can also be fully inhibited but only by repeated injections of 200-400 microg/g body mass. In this s...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2004.07.003
更新日期:2004-10-01 00:00:00
abstract::The study of copulation and the control of egg production in the blood-feeding insect, Rhodnius prolixus, continues to offer a fertile ground for the cultivation of new insights into the physiological processes associated with reproduction. We begin this paper by describing the male organs of copulation showing that t...
journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
doi:10.1016/j.jinsphys.2016.06.001
更新日期:2017-01-01 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::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::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::A new method was developed for artificial insemination of the silkworm. Virgin females artificially inseminated by this method oviposited fertilized eggs at a rate almost similar to that of females mated with males. Using inactive sperm collected from the seminal vesicles, we confirmed the previous finding by Omura, S...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(98)00148-6
更新日期:1999-05-01 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::Epoxide hydrolases are multifunctional enzymes that are best known in insects for their role in juvenile hormone (JH) degradation. Enzymes involved in JH catabolism can play major roles during metamorphosis and reproduction, such as the JH epoxide hydrolase (JHEH), which degrades JH through hydration of the epoxide mo...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.03.007
更新日期:2010-09-01 00:00:00
abstract::Helicoverpa armigera (Lepidoptera, Noctuidae) is an important agricultural pest with a pupal diapause. Cytochrome c oxidase (COX) is a key speed-limited enzyme of oxidative phosphorylation in mitochondria for ATP production. A differentially expressed cDNA fragment encoding COX subunit 1 (cox1) was cloned by different...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.08.023
更新日期:2010-12-01 00:00:00
abstract::Qualitative and quantitative changes in haemolymph proteins in Heliothis virescens were observed in larvae injected with either Microplitis croceipes teratocytes or teratocyte secreted proteins (TSP). Haemolymph protein titres in hosts receiving either 0.5 or 1 larval equivalent (LE) of teratocytes were similar to tho...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(96)00118-7
更新日期:1997-06-01 00:00:00
abstract::To develop inside their insect hosts, endoparasitoid wasps must either evade or overcome the host's immune system. Several ichneumonid and braconid wasps inject polydnaviruses that display well-studied immune suppressive effects. However, little is known about the strategies of immunoevasion used by other parasitoid f...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(03)00054-4
更新日期:2003-05-01 00:00:00
abstract::Males transfer sperm, proteins and other molecules to females during mating. In Drosophila melanogaster, these molecules contribute to the induction of egg maturation, ovulation, oviposition, sperm storage and changes in female receptivity. This suite of physiological and behavioral changes is referred to as the femal...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2017.04.004
更新日期:2017-05-01 00:00:00
abstract::Wings and legs of the gregarious desert locust, Schistocerca gregaria have been shown to be release sites of phenylacetonitrile (PAN), the major adult male-produced pheromone. However, there is limited information on the distribution of PAN within the locust. Here we show, using gas chromatography-mass spectrometry (G...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2012.03.012
更新日期:2012-08-01 00:00:00
abstract::To explore the role of tyramine in the transformation of reproductive states of honeybee workers, brain levels of tyramine and N-acetyltyramine were measured in both normal and queenless workers. Queenless workers had higher tyramine levels and lower N-acetyltyramine levels than normal workers did. Intermediate reprod...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(02)00200-7
更新日期:2002-12-01 00:00:00
abstract::Catabolism of excess dietary protein by Aedes aegypti was investigated during larval development, during and after metamorphosis. Activity profiles were established for xanthine dehydrogenase (XDH, uricotelic pathway) and arginase (ureotelic pathway). Both enzymes are active at all times during the life-cycle. During ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(00)00096-2
更新日期:2001-02-01 00:00:00
abstract::Temperature and mass dependency of insect metabolic rates are well known, while less attention has been given to other factors, such as age. Among insect species that experience seasonal variation in environmental conditions, such as in temperate latitudes, age may also have indirect effects on the metabolic rate. We ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2009.10.015
更新日期:2010-03-01 00:00:00
abstract::Apis mellifera treated during different developmental phases with pyriproxyfen, a juvenile hormone analogue, show profound alterations in cuticular pigmentation and sclerotization. When the treatment is effected during the feeding phase of the fifth larval instar (LF5), the pupal development is blocked and pigmentatio...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(97)00113-3
更新日期:1998-05-01 00:00:00