Winter Diapause
Winter Diapause - Related Videos
12:10
An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus
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Cited by 7 •
2014
RNA-Seq analyses are becoming increasingly important for identifying the molecular underpinnings of adaptive traits in non-model organisms. Here, a protocol to identify differentially expressed genes between diapause and non-diapause Aedes albopictus mosquitoes is described, from mosquito rearing, to RNA sequencing and bioinformatics analyses of RNA-Seq data.
07:25
Combining Histochemical Staining and Image Analysis to Quantify Starch in the Ovary Primordia of Sweet Cherry during Winter Dormancy
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Cited by 9 •
2019
We present a methodology to quantify the starch content in the ovary primordia in sweet cherry (Prunus avium L.) during winter dormancy by using an image analysis system combined with histochemical techniques.
11:38
Preparation of Complaint Matrices for Quantifying Cellular Contraction
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Cited by 115 •
2010
In this video, we demonstrate the experimental techniques used to fabricate compliant, extracellular matrix (ECM) coated substrates suitable for cell culture, and which are amenable to traction force microscopy and observing effects of ECM stiffness on cell behavior.
06:49
Visualization of Ambient Mass Spectrometry with the Use of Schlieren Photography
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Cited by 4 •
2016
This paper presents a protocol for the visualization of gaseous streams of an ambient ionization source using schlieren photography and mass spectrometry.
06:48
Natural Selection - Concepts
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2019
Fitness Widespread variation of phenotypes in natural populations provides the raw material for evolution, which is the change in the inherited traits of populations over successive generations. Natural selection is one of the main mechanisms of evolution and requires variable traits to be heritable and associated with differential survival and/or reproductive success. Phenotypes that correlate with greater success will have more offspring that survive to reproduce in the next generation, and...
FAQs
Shortening day length and declining temperature function as environmental signals that forecast the approaching cold season. Organisms respond through endocrine and metabolic adjustments rather than waiting for food shortages or severe cold to occur. These signals therefore help coordinate the timing of reduced development and activity with the seasonal period when resources and suitable conditions become limited.
Endocrine changes regulate the transition into and out of diapause, while metabolic changes reduce development and activity during the dormant period. Together, these processes shift the organism away from growth and routine seasonal functions toward survival. They also contribute to greater resistance to cold and dehydration, which are major challenges during winter.
Winter diapause can occur during embryonic, larval, pupal, or adult stages, so its biological consequences depend on when development pauses. A population may therefore pass winter as eggs, immature individuals, pupae, or adults rather than in one universal form. Identifying the stage involved is important when interpreting seasonal development and population patterns.
Ending diapause depends on the interaction between internal timing mechanisms and favorable environmental conditions. Improved conditions alone may not immediately restart development if the organism’s internal schedule has not permitted termination. Conversely, internal readiness cannot support continued development when conditions remain unsuitable. This timing system helps align renewed activity with a season that can support growth and survival.
Diapause determines when individuals stop developing, reduce activity, and later resume seasonal processes. Those shifts affect the timing of life stages within a population and help explain why abundance and development vary across seasons. Examining diapause can therefore connect environmental change with population timing, especially when food availability and other suitable conditions fluctuate.
Understanding the seasonal timing of diapause can help identify when a pest population is developmentally inactive and when it is likely to resume activity. Because diapause may occur in different life stages, management planning must account for whether eggs, larvae, pupae, or adults carry the population through winter. This knowledge improves interpretation of seasonal pest patterns.
Diapause links environmental cues with survival, development, and seasonal population timing, making it useful for evaluating changing conditions. Conservation planning can consider which life stages persist through winter and whether local seasons provide suitable conditions for diapause termination. Climate-change research can use these relationships to assess how altered temperature and seasonal cues may affect species.