Related Experiment Video
Updated: Mar 5, 2026
07:37
Resurrection of Dormant Daphnia magna: Protocol and Applications
Published on: January 19, 2018
19.5K
Aridity promotes bet hedging via delayed hatching: a case study with two temporary pond crustaceans along a
Tom Pinceel1,2, Bram Vanschoenwinkel3, Wouter Hawinkel4
1Laboratory of Aquatic Ecology, Evolution and Conservation, KU Leuven, Charles Deberiotstraat 32, 3000, Louvain, Belgium. tom.pinceel@bio.kuleuven.be.
Oecologia
|March 26, 2017
Summary
Climate change impacts temporary water habitats. Organisms use delayed hatching as a bet-hedging strategy, with less hatching in drier climates to ensure survival.
Area of Science:
- Ecology
- Evolutionary Biology
- Climate Change Biology
Background:
- Climate change alters rainfall patterns, affecting temporary aquatic environments and organism reproduction.
- Organisms in temporary waters rely on rainfall and evaporation for their life cycles.
- Bet hedging theory predicts that organisms with dormant stages should delay hatching to survive unpredictable environments.
Purpose of the Study:
- To investigate geographic variation in delayed hatching of dormant eggs in two temporary rock pool crustaceans.
- To test bet hedging predictions in natural populations along an aridity gradient.
- To understand how climate variation influences reproductive strategies in aquatic organisms.
Main Methods:
- Studied natural populations of Branchinella longirostris and Paralimnadia badia along a 725 km latitudinal aridity gradient in Western Australia.
- Assessed delayed hatching of dormant eggs under common garden conditions.
- Correlated hatching fractions with aridity and reproductive success probability.
Main Results:
- Populations of both species exhibited delayed hatching, supporting bet hedging theory.
- Hatching fractions decreased towards the drier end of the aridity gradient.
- The species with longer maturation times showed a more pronounced decrease in hatching, indicating higher sensitivity to short inundations.
Conclusions:
- Regional climate variation drives differential investment in bet hedging strategies.
- Delayed hatching is crucial for persistence in harsher, arid climates.
- These strategies are vital for predicting organismal vulnerability to ongoing climate change.
More Related Videos
Related Concept Videos
01:47Osmoregulation in Insects
17.8K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
17.8K
01:06Fixed Action Patterns
17.9K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
17.9K
02:29Hybrid Zones
22.2K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
22.2K
01:57Adaptations that Reduce Water Loss
28.4K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
28.4K
01:07Speciation Rates
23.2K
Overview
23.2K
00:51Energy Budgets
11.0K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
11.0K