Growth, sexual maturation, cataracts, and blood biochemistry in diploid and triploid Atlantic salmon post-smolts reared at one of eight constant temperatures


The Impact of Temperature on Diploid & Triploid Atlantic Salmon Growth! 🐟🔥

Ever wondered how temperature affects the growth, sexual maturation, and health of Atlantic salmon? 🌡️🐠 A fascinating study examined diploid and triploid Atlantic salmon post-smolts reared at eight constant temperatures (from 3.0°C to 20.5°C) for 140 days! Let’s dive into the key findings! 👀👇

🔬 Growth & Temperature

Temperature plays a huge role in salmon development! 📈

✅ Moderate temperatures (10-15°C) → Best for growth, ensuring healthy weight gain and size increase. 🏆🐟
⚠️ Extremes (below 5°C or above 18°C) → Slower growth, stress, and potential health risks. ⚠️


🔥 Sexual Maturation & Temperature

Sexual development in salmon is temperature-dependent! ♀️♂️

💡 Higher temperatures (16-20°C) → Accelerated sexual maturation in diploids, but triploids showed delayed or reduced maturation.
💡 Lower temperatures (below 10°C) → Slowed maturation, which could be beneficial in aquaculture to prevent early reproduction.

👀 Cataracts & Triploids

Did you know triploid salmon are more prone to eye problems? 👁️🐟

🚨 Higher temperatures (above 15°C) increased the risk of cataracts, especially in triploids! This can impact vision and overall health.
✅ Keeping them in cooler conditions reduces the risk of eye issues!

🩸 Blood Biochemistry & Health

Blood tests revealed how temperature affects salmon’s internal health! 🩸🔬

📌 Higher temperatures = Increased metabolic activity but also higher stress markers.
📌 Triploids were more sensitive to high temperatures, showing greater signs of physiological stress.

🏁 Conclusion: Finding the Sweet Spot!

For optimal growth and health, rearing Atlantic salmon at 10-15°C seems to be the best choice! 🌊🐟

👉 Diploids grow fast but mature quicker at high temperatures.

👉 Triploids are more temperature-sensitive and prone to cataracts, requiring careful management.

Keeping salmon in ideal temperature ranges can boost aquaculture success, improve fish welfare, and enhance sustainability! 🌱🐠

What do you think? Should we raise more triploids in aquaculture, or stick to diploids? 🤔 Let’s discuss in the comments! 👇💬

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