Diapause. Medical search. Frequent questions

Photoperiod is the most important stimulus initiating diapause. (wikipedia.org)
Sensitivity to certain stimuli which act to prevent termination of diapause, such as photoperiod and temperature, is increased. (wikipedia.org)
Nasonia (a small hymenopteran) exposed to short photoperiod and 20 degrees C initially produce offspring which do not go through diapause but then switch to producing diapause bound offspring by day eight of laying. (centa.ac.uk)
In Ohio, the signal to initiate the onset of diapause is photoperiod, the length of night verses the length of day. (iheart.com)
The stage of the insects life cycle that is sensitive to the photoperiod stimulus is often not the same stage in which diapause occurs (e.g. flesh flies (Genus Sarcophaga ) are signaled in the larval stage (maggot) and diapause as pupae). (iheart.com)
Specifically, a series of growth chamber experiments using wild caught individuals from across the eastern United States were performed to: (1) evaluate how critical photoperiod varies with latitude, (2) isolate the stage in which induction occurs, (3) test whether changes in temperature affected rates of diapause induction, and (4) explore how the incidence of diapause is affected in hybrid offspring. (montclair.edu)
In order to clarify the effects of photoperiod on diapause termination and reproductive development of Chrysoperla sinica (Tjeder), the dry weight, supercooling point (SCP), freezing point (FP), and the water, protein and glycogen contents in overwintering adults of C. sinica were investigated under the long (15L∶9D) and short (9L∶15D) photoperiods in the laboratory conditions. (insect.org.cn)

In facultative diapausers, token stimuli must occur to terminate diapause. (wikipedia.org)
Cysts are an excellent model for studying the regulation of diapause because they remain in this state for prolonged periods showing remarkable resistant to harsh environmental conditions and they terminate diapause in response to specific stimuli. (dal.ca)
Since the diapausing blastocyst is surrounded by the zona and 2 other acellular coats, the mucoid layer and shell coat, the uterine signals that maintain or terminate diapause must involve soluble factors in the secretions rather than any direct cellular interaction between uterus and embryo. (ehu.eus)

Diapause is observed in all the life stages of arthropods, especially insects. (wikipedia.org)
Diapause in insects is a dynamic process consisting of several distinct phases. (wikipedia.org)
While diapause varies considerably from one taxon of insects to another, these phases can be characterized by particular sets of metabolic processes and responsiveness of the insect to certain environmental stimuli. (wikipedia.org)
Examples of sensitive stage/diapause periods in various insects: The induction phase occurs at a genetically predetermined stage of life, and occurs well in advance of the environmental stress. (wikipedia.org)
During this phase, insects are responsive to external cues called token stimuli, which trigger the switch from direct development pathways to diapause pathways. (wikipedia.org)
At this stage, insects are unresponsive to changes in the environment that will eventually trigger the end of diapause, but they grow more sensitive to these stimuli as time progresses. (wikipedia.org)
In insects that undergo obligate diapause, termination may occur spontaneously, without any external stimuli. (wikipedia.org)
However, other cases of delayed emergence in insects may reflect diapause rather than prolonged larval development. (ufl.edu)
The objective of this review was to determine the longest diapause recorded for insects. (ufl.edu)
Diapause lasting more than a year, also called 'prolonged' or 'extended' diapause, is known in many species of insects ( Danks 1987 ). (ufl.edu)
This ontogenetic increase in metabolism of non-diapause insects is blocked during diapause, such that metabolic rate is only 36% of the rate measured for 15 days developing embryos. (biologists.com)
Does diapause alter epigenetic ageing trajectory in insects? (centa.ac.uk)
Diapause is an overwintering stage in some insects where development is arrested. (centa.ac.uk)
There are many differences between diapaused insects and non-diapaused members of the same species, including a decrease in ageing during and after diapause. (centa.ac.uk)
Diapause is a form of animal dormancy that is exhibited by insects and other arthropods. (iheart.com)
Diapause allows insects and their relatives to survive through periods of unfavorable, harsh environmental conditions. (iheart.com)
Diapause takes place in animal groups such as insects, mites, and crustaceans. (differencebetween.com)
Both Diapause and Hibernation occur in different species mammals and insects. (differencebetween.com)
Bed bugs , like most other insects, possess a behavioral characteristic that allows them to enter into a hibernation-like condition called diapause that enables the insects to go dormant. (orkin.com)
To survive the brutality of freezing winters, many insects enter a state of suspended animation known as diapause. (localgardener.net)
A key adaptation in insects for dealing with variable environmental conditions is the ability to diapause. (montclair.edu)

Embryonic diapause, a somewhat similar phenomenon, occurs in over 130 species of mammals, possibly even in humans, and in the embryos of many of the oviparous species of fish in the order Cyprinodontiformes. (wikipedia.org)
The southern ground cricket, Allonemobius socius (Scudder), is an ideal animal for studying mechanisms that regulate embryonic diapause because adult females can produce either diapause or non-diapause embryos. (biologists.com)
The marsupial tammar wallaby has the longest period of embryonic diapause of any mammal. (ehu.eus)

These molecules are used to maintain the insect throughout diapause and to provide fuel for development following diapause termination. (wikipedia.org)
Powell (1987) suggested that particular token stimuli needed to promote the late phases of diapause maintenance and diapause termination are not received. (ufl.edu)
Samples from four time points (November, January, March and May) were chosen to span the diapause maintenance, termination and post-diapause quiescence stages of development. (usda.gov)

In animal dormancy, diapause is the delay in development in response to regular and recurring periods of adverse environmental conditions. (wikipedia.org)
The life cycles of many animals inhabiting regions with pronounced seasonal variation in environmental conditions include a period of dormancy known as diapause. (biologists.com)

Rather than flitting south, most butterflies stay put for the winter, riding it out in a state of suspended animation known as diapause. (fafard.com)

Diapause can occur during any stage of development in arthropods, but each species exhibits diapause in specific phases of development. (wikipedia.org)
Sunose (1983) summarized cases of prolonged diapause and tabulated 64 insect species that present this phenomenon. (ufl.edu)
Powell (1987) referred to approximately 90 species of Lepidoptera, in 10 superfamilies, that diapause for over one year. (ufl.edu)
According to Powell (1984) , the study of two prodoxid species, Prodoxus aenescens Riley and P. cinereu Riley, indicated that temperature is the key factor in diapause development. (ufl.edu)
But for most species, the answer is DIAPAUSE. (iheart.com)
Across the insect world, diapause occurs in all stages of the life cycle (eggs, larvae, nymphs, pupae and adults), however in a particular species of insect, diapause only occurs in one stage of its life cycle. (iheart.com)
The level of diapause changes with species. (differencebetween.com)
The tiger swallowtail butterflies, Papilio glaucus and P. canadensis are ideal species to explore the genetic causes and population genetic consequences of diapause because divergence in this trait is believed to be a salient factor in maintaining a hybrid zone between these species. (montclair.edu)
These patterns are consistent with those observed in diapausing mice and mink after reactivation, despite the very different patterns of endocrine control of diapause in these 3 divergent species. (ehu.eus)
These results confirm results from studies in other species conducted by ARS scientists in Fargo, ND showing that laboratory studies are necessary, but not sufficient to explain diapause physiology under field conditions. (usda.gov)
For many species, diapause occurs in the form of a chrysalis, a hardened structure which encases the pupating butterfly while it morphs from crawling caterpillar to flitting adult. (fafard.com)
Based on these data, we conclude that this species likely has a diapause phase for C6F, with immature gonads, and C5M from June to November. (brill.com)

Hence, when thermal or other thresholds are reached that would have resulted in post diapause development, the diapause maintenance period continues. (ufl.edu)

These results show that the degenerative changes in spermatogenic cells during pupal diapause were controlled by apoptosis. (elsevierpure.com)

These stimuli are important in preventing the insect from terminating diapause too soon, for instance in response to warm weather in late fall. (wikipedia.org)
Mallon will provide specific expertise in the role of epigenetics, while Kyriacou is a leading expert on insect diapause. (centa.ac.uk)
During these periods of harsh environmental conditions such as the winter months in the northern climates, temperature extremes and/or the lack of available food resources would lead to the death of the insect without diapause. (iheart.com)

In this study, we explore the relationship between expression and splicing plasticity, along with the genetic diversity in those genes, in an ecologically consequential polyphenism: facultative diapause. (lu.se)

In nature, larval development of the first generation is typically completed by mid-July when a portion of bees undergo diapause, a period of suppressed metabolism and development, and overwinter as prepupa. (usda.gov)
However, a proportion of the population will avert diapause to produce a second generation, the progeny of which will predominately enter prepupal diapause if they can complete larval development before the onset of winter. (usda.gov)

Our results suggest that maintenance of the molecular mechanisms involved in diapause progression, including post-transcriptional modifications, are highly conserved and likely to experience genetic constraints, especially in northern populations of P. napi. (lu.se)
This proteomics approach has added valuable information to the global picture of the diapause proteome, making a contribution to understanding p26 influence on diapause and the molecular mechanisms of diapause in A. franciscana. (dal.ca)
Mechanisms of animal diapause: Recent developments from nematodes, cru" by Steven C. Hand, David L. Denlinger et al. (lsu.edu)
This multi-factorial characterization of M. rotundata diapause will not only aid in commercial management optimization, but will provide insights into mechanisms of quiescence plasticity. (usda.gov)

The yucca moth Prodoxus y-inversus Riley (Lepidoptera: Prodoxidae) has the longest reported diapause. (ufl.edu)
However, Powell (1989) reported the emergence of adults of the yucca moth Prodoxus y-inversus Riley (Lepidoptera: Prodoxidae), after prepupae spent 19 years in diapause. (ufl.edu)
The effect of temperature on the diapause and cold hardiness of Dendrolimus tabulaeformis (Lepidoptera: Lasiocampidae)[J]. European Journal of Entomology,2008,105(4):599-606. (ioz.ac.cn)
Zeng JP,Ge F,Su JW,&Wang Y.(2008).The effect of temperature on the diapause and cold hardiness of Dendrolimus tabulaeformis (Lepidoptera: Lasiocampidae). (ioz.ac.cn)

This is the key difference between hibernation and diapause. (differencebetween.com)
These adaptations include states of hibernation and diapause. (differencebetween.com)
Unlike hibernation, diapause is a temporary effect for a short period of time. (differencebetween.com)
What are the Similarities Between Diapause and Hibernation? (differencebetween.com)
Both Diapause and Hibernation result in adapting the animal to withstand extreme environmental conditions. (differencebetween.com)
Both Diapause and Hibernation prevent the death of animals due to adverse effects on the environment. (differencebetween.com)
Come winter, BMSBs are looking for a warm place to shack up so they can enter diapause, a hibernation-like state that lasts until spring (a.k.a. mating season). (mentalfloss.com)

For example, Sepsis cynipsea flies primarily use temperature to determine when to enter diapause. (wikipedia.org)
What I also don't know is what temperature I should keep them while in diapause. (tortoiseforum.org)
The main intention of diapause is to protect from adverse environmental conditions such as extreme temperature conditions like winter, droughts and low food availability. (differencebetween.com)
Here we explored how spatial (latitudinal), environmental (temperature) and genetic (hybridization) factors affect diapause induction in this system. (montclair.edu)
They remained alive in this stage for about a year, but this quiescence could be broken at anay time when the eggs were transferred to 16 and 20° C. Freezing at -6° C followed by an increase in the water temperature led to a break in the diapause of A. compacta eggs after five months, but not of D. bicaudata eggs. (limnology-journal.org)
Eggs of D. bicaudata held at a constant temperature of 1.5° C also began to hatch at the same time as those kept at 8° or 16° C. However, the point of 50 % hatching was much delayed at 1.5° C. The egg diapause of A. compacta and D. bicaudata is an adaptation to areas with a severe climate typified by long cold winters and short summers. (limnology-journal.org)

Diapause may occur in a completely immobile stage, such as the pupae and eggs, or it may occur in very active stages that undergo extensive migrations, such as the adult monarch butterfly, Danaus plexippus. (wikipedia.org)
In Polistes exclamans, a social wasp, only the queen is said to be able to undergo diapause. (wikipedia.org)
Prolonged diapause may have appreciable adaptive value in habitats where resources are available only briefly each season and/or undergo erratic fluctuations in abundance ( Sunose 1978 ). (ufl.edu)
Diapause is defined as a state in which animals undergo to protect themselves from adverse environmental conditions. (differencebetween.com)
Diapause could also occur at active stages of life that undergo extensive migration (example: adult monarch butterfly). (differencebetween.com)

Three of their development stages, however, are lived in water as egg, larva and pupa, and in cold climates these stages enter diapause, waiting for spring before continuing their developmental journey. (localgardener.net)
In diapause-induced hornworms, spermatogenesis progressed similarly during the larval stages. (elsevierpure.com)

But it was found out that, the most prominent stage of diapause takes place during the immobile stage of pupae . (differencebetween.com)

We show that cdk-12 lesions or afull-length CTD S2A substitution results in an identical phenotype in Caenorhabditiselegans Embryogenesis occurs in the complete absence of S2P, but the hatched larvaearrest development, mimicking the diapause induced when hatching occurs in theabsence of food. (ens-lyon.fr)
For example, in the bagworm, Thyridopteryx ephemeraeformis , diapause always occurs in the egg stage, in the European corn borer, Ostrinia nubilalis , diapause always occurs in the late fifth instar larva, and in the elm leaf beetle, Xanthogaleruca luteola , diapause always occurs in the adult stage. (iheart.com)

RNA polymerase II CTD S2P is dispensable for embryogenesis but mediates exit from developmental diapause in C. elegans. (ens-lyon.fr)
Home / Teams / Epigenetic regulation of cell identity and environmental stress responses - F. Palladino / Publications / RNA polymerase II CTD S2P is dispensable for embryogenesis but mediates exit from developmental diapause in C. elegans. (ens-lyon.fr)

These common patterns suggest a similar underlying mechanism for diapause, perhaps common to all mammals, but which is activated in only a few. (ehu.eus)

Surprisingly, however, there is not an acute metabolic depression during diapause entry at the point when developmental ceases (4-5 days post-oviposition), as measured by blockage of morphological change and DNA proliferation. (biologists.com)
The similar adenylate profiles for these two developmental states indicate the atypical energy status is not a specific feature of diapause. (biologists.com)

Adult mosquitoes enter a state of quiescence - not quite as deep as diapause - resting in a sheltered place until it's time to get active. (localgardener.net)

Definition: Diapause is defined as a physiological state of arrest in development in response to regular and recurring environmental stimuli that are predictive of impending, adverse environmental conditions. (iheart.com)

We suggest that rapid screening of activity may provide an early indicator of diapause before it becomes fully apparent and consistent in other physiological indicators. (bas.ac.uk)

2021. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/732140/all/diapause. (unboundmedicine.com)
2021. "Microbiome Reduction Prevents Lipid Accumulation During Early Diapause in the Northern House Mosquito, Culex Pipiens Pipiens. (york.ac.uk)

Ultimately, swimming activity may provide a useful tool to assess the putative endogenous and exogenous factors involved in diapause onset, provide a handle on the energetics of diapause, and input to biogeochemical carbon models on C. finmarchicus. (bas.ac.uk)
This study represents the first global characterization of the A. franciscana diapause proteome, identifies putative p26 substrates and shows that p26 regulates the synthesis of specific proteins. (dal.ca)

The resulting conceptus develops over 6- 7 days to form a unilaminar blastocyst of 80-100 cells and enters lactationally, and later seasonally, controlled diapause. (ehu.eus)

Future study into diapause as an example of senescense plasticity could allow us to differentiate between various similar theories for the evolution of ageing. (centa.ac.uk)

Our studies suggest involvement of a number of cytokines in the regulation of diapause in tammars. (ehu.eus)
Therefore, an understanding of diapause regulation will help improve management practices and enable this bee to be used in additional agricultural markets. (usda.gov)

Diapause is endogenously controlled, and the entry into diapause begins even while conditions are adequate to support normal development. (biologists.com)
p26 is the most abundant diapause protein in the cyst proteome, playing a critical role in embryo development, diapause maintenance, and cyst stress tolerance, the latter presumably by preventing irreversible protein denaturation during stress. (dal.ca)
Mosquitoes respond to the shortening days signaling winter's onset by laying diapause eggs -- literally, delayed development eggs. (sciencedaily.com)
Between month treatment comparisons of differentially expressed genes is providing a foundation for understanding the timing of processes regulating diapause development. (usda.gov)

The sensitive stage is the period when stimulus must occur to trigger diapause in the organism. (wikipedia.org)
This sensitive stage may occur within the lifetime of the diapausing individual, or in preceding generations, particularly in egg diapause. (wikipedia.org)

They are currently in the incubator at 88 F. I've heard and read that placing the eggs into a state of diapause often results in higher hatch rates. (tortoiseforum.org)
What I don't know is how long should I leave the eggs in the incubator before placing them in diapause. (tortoiseforum.org)
I successfully hatched 9 (out of 31) eggs total) last season without initiating diapause. (tortoiseforum.org)
I also still don't really know if I should diapause the eggs at room temp (which is generally about 78F in my house but may fluctuate a little) or put them in my little wine fridge (and if so, what temp to set them at). (tortoiseforum.org)
Still, diapause eggs are different from regular eggs. (sciencedaily.com)
Previous research had showed that northern mosquitoes lay more diapause eggs than their southern cousins. (sciencedaily.com)
What we learned was that the northern mosquitoes' diapause eggs survived northern winters significantly better than the southern mosquitoes' eggs did. (sciencedaily.com)
These northern mosquitoes are producing a lot more diapause eggs," Medley said. (sciencedaily.com)

Yet little is known about the factors that influence diapause induction in this system. (montclair.edu)
This work deepens our understanding of how spatial, environmental and genetic variation influences a key seasonal adaptation (diapause induction) in a well-developed ecological model system and will make possible future studies that explore how climatic variation affects the population dynamics and genetics of this system. (montclair.edu)

Copepods dominate zooplankton biomass of the upper ocean, especially in the highly seasonal boreal and polar regions, for which specific life-cycle traits such as the accumulation of lipid reserves, migration into deep water and diapause are key adaptations. (bas.ac.uk)

Les œufs de D. cephalotes sont entrés en quiescence lorsque la température était abaissée de 16° C à 8° C ou au-dessous. (limnology-journal.org)
Dans ces conditions, ils sont restés vivants environ une année mais leur quiescence pouvait être stoppée à tout instant par un relèvement de la température à 16° et 20° C. Un refroidissement à - 6° C suivi par une augmentation de température de l'eau a entrainé une levée de la diapause chez A. compacta après cinq mois, mais pas chez D. bicaudata. (limnology-journal.org)
La période de quiescence des œufs de D. cephalotes permet à l'espèce de survivre en dehors de sa zone normale de distribution. (limnology-journal.org)

The present study examined the light wavelengths effect on the diapause percentage of progeny and energy reserves of maternal generation in sexual and asexual Trichogramma brassicae that had been reared under different light wavelengths before oviposition. (ac.ir)

I'm not really sure what to do at this point: 1) start diapause immediately (before they go in the incubator), 2) put them in the incubator for 30-60 days or so then initiate diapause or 3) just put them in the incubator and leave them there until they hatch (which is what I did last season with some, but not great, success). (tortoiseforum.org)

Powell (1989) pointed out that exposure to temperatures that are colder than preceding winters are likely to interrupt the diapause maintenance in P. y-inversus . (ufl.edu)

Methods for rearing the head miner in the laboratory and eliminating the diapause stage of the pest to improve its management in the field are also discussed. (icrisat.org)

Genes with unique transcriptional changes through diapause consistently had the lowest nucleotide diversity, and this effect was consistently stronger among genes that were differentially spliced compared to those with just differential expression through diapause. (lu.se)

Cecropia moth (Hyalophora cecropia) cocoon inside of which a cecropia moth pupa spent the winter in diapause. (iheart.com)

Additionally, while the diapause process synchronizes spring emergence, it does not synchronize the physiology of bees oviposited at different points in the season. (usda.gov)

Boxelder bugs (Boisea trivittata) aggregating on a house foundation preparing to enter a hiding place to diapause as adults in a protected location. (iheart.com)
If the pond freezes over completely, they may enter diapause to eke out the rest of the season, becoming reactivated in spring. (localgardener.net)

The cessation of spermatogenesis during diapause is characterized by 1) secondary spermatocytes and sperm bundles degenerating gradually as the diapause period lengthens, and 2) spermatogonia or primary spermatocytes appearing throughout diapause. (elsevierpure.com)

In non-diapause individuals, eupyrene metaphase began during the fifth larval instar and eupyrene spermatids appeared in wandering larvae. (elsevierpure.com)

The results showed that Wolbachia infection and light wavelengths had significant effects on the diapause percentage and energy reserves of T. brassicae , excepting glycogen contents. (ac.ir)

Therefore, Wolbachia can cause a different reaction to light wavelengths in both diapause percentage and pattern of the parasitoid. (ac.ir)

In whatever form, winter diapause is a crucial stage of a butterflies' life cycle. (fafard.com)

We can then compare ageing in diapaused/normal larvae and diapaused/normal adults to see does diapause affect this epigenetic ageing. (centa.ac.uk)

In some cases, this change may be very distinct and can involve moulting into a specific diapause stage, or be accompanied by color change. (wikipedia.org)

In the Edith's checkerspot butterfly, individuals must receive enough sunlight in order to terminate the diapause stage and become a fully grown butterfly. (wikipedia.org)
Stage CV copepods were sampled in late summer from shallow (epipelagic) and deep (mesopelagic) water at both slope and basin locations within the Fram Strait at a time when the animals had entered diapause. (bas.ac.uk)
The occurrence of diapause could take place at any stage of life. (differencebetween.com)

The prolonged diapause for P. y-inversus was observed under unnatural environmental conditions. (ufl.edu)

Those of D. bicaudata and A. compacta had a diapause during the winter. (limnology-journal.org)

abstract = "Dichotomous spermatogenesis was examined in relation to diapause in the sweet potato hornworm, Agrius convolvuli. (elsevierpure.com)

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