Related Experiment Video
Updated: Jun 3, 2025
06:36
Incremental Temperature Changes for Maximal Breeding and Spawning in Astyanax mexicanus
Published on: February 14, 2021
3.9K
Fish reproductive phenology shifts with increasing temperature and year
S T Koenigbauer1, M L Cubbage1,2, L D Warren1
1Department of Forestry and Natural Resources, Purdue University, Forestry Building, 195 Marsteller Street, West Lafayette, IN 47907, USA.
Biology Letters
|January 8, 2025
Summary
Climate change is altering fish spawning times. Warmer temperatures lead to earlier spring spawning and later autumn spawning, impacting fish migration and residence times in tributaries.
Area of Science:
- Ecology
- Climate Change Biology
- Ichthyology
Background:
- Temperate fish spawning is often triggered by environmental cues like temperature.
- Climate change may disrupt the reproductive phenology of freshwater fish.
- The sensitivity of fish reproductive timing to temperature is crucial for understanding these impacts.
Purpose of the Study:
- To investigate the effects of annual temperature and year on fish reproductive phenology.
- To test the hypothesis that increasing temperatures advance spring spawning and delay autumn spawning.
- To analyze changes in fish migration and spawning date variations.
Main Methods:
- A meta-analysis approach was employed.
- Data from walleye (Sander vitreus) and Lake Constance whitefish (Coregonus arenicolus) were preliminarily examined.
- Statistical analysis was used to assess the relationship between temperature, year, and spawning phenology.
Main Results:
- Spawning occurred significantly earlier in spring and later in autumn.
- Warmer temperatures led to earlier migration of autumn-spawning species, increasing tributary residence time.
- Spring-spawning fish reproduced earlier in recent years; autumn-spawners showed no significant trend.
- Spring- and autumn-spawning fish exhibited interannual variation in spawning dates (34.4 and 27.0 days, respectively).
Conclusions:
- Fish reproductive phenology is sensitive to climatic changes, particularly temperature.
- Altered spawning times and migration patterns may affect fish populations.
- Spring-spawning fish show greater interannual variability in spawning dates compared to autumn-spawners.
Related Concept Videos
02:27Background and Environment Affect Phenotype
6.4K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.4K
02:45Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
02:45Responses to Heat and Cold Stress
13.3K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.3K
00:51Energy Budgets
9.2K
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...
9.2K
01:28Factors Affecting Body Temperature
3.8K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
3.8K
01:28Menopause
131
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
131