Related Experiment Video
Updated: May 5, 2026
11:30
Recording Behavioral Responses to Reflection in Crayfish
Published on: May 14, 2010
10.2K
Contrasting Aquaculture Systems Shape Distinct Growth and Short-Term Stress-Resistance Trait Clusters in the Red
Gao Gao1,2, Lingyu Gan1,2, Jingnan Wei1,2
1College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650500, China.
Animals : an Open Access Journal From MDPI
|May 4, 2026
Summary
Crayfish in high-input ponds grew faster but showed more stress, while low-input paddy crayfish were more stress-resistant. This highlights a trade-off between production and robustness in aquaculture systems.
Area of Science:
- Aquaculture
- Animal Physiology
- Environmental Science
Background:
- Contrasting aquaculture environments may induce distinct physiological adaptations in aquatic organisms.
- Understanding these adaptations is crucial for optimizing sustainable aquaculture practices and animal welfare.
Purpose of the Study:
- To investigate if different aquaculture systems (high-input pond vs. low-input rice paddy) induce specific phenotypic-physiological syndromes in crayfish.
- To determine if these syndromes reflect a life-history trade-off between growth and stress resistance.
Main Methods:
- A 60-day controlled trial comparing crayfish from high-input (fed to satiation) and low-input (natural diet supplemented) systems.
- Analysis of morphological traits, enzyme activities (lipase, ACC, SOD, CAT, GST, amylase), hemolymph parameters (protein, cholesterol), stress markers (cortisol-like immunoreactivity, MDA), and immune indicators (lysozyme, phenoloxidase).
- Transcriptomic analysis of hepatopancreas tissue to identify differential gene expression patterns.
Main Results:
- Pond crayfish exhibited a growth syndrome (33% heavier, elevated anabolic enzymes, higher protein/cholesterol, increased stress/oxidative damage).
- Paddy crayfish showed a stress-resistance syndrome (streamlined morphology, enhanced antioxidant/immune capacity, better carbohydrate digestion, lower stress).
- Transcriptomics revealed differential pathway enrichment in hepatopancreas, including lipid metabolism and detoxification, with notable upregulation of SULT1E1 in paddy crayfish.
Conclusions:
- Distinct environmental and nutritional conditions drive specific, multi-level adaptation syndromes in crayfish.
- A clear trade-off exists between rapid biomass production and systemic stress resistance within a 60-day period.
- Integrated aquaculture systems promote stock robustness, while intensive systems necessitate strategies to mitigate physiological stress.
Keywords:
Procambarus clarkiiintensive aquaculturephenotypic plasticityrice–crayfish co-culturetrade-offsMore Related Videos
Related Concept Videos
02:02Responses to Salt Stress
12.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
12.2K
01:06Fixed Action Patterns
16.0K
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.
16.0K
02:32Osmoregulation in Fishes
48.9K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
48.9K