Excretory Organs In FinFish And ShellFish,Physiology of Excretion[1].pptx

Excretory organs in fin fish and shell fish and physiology of respiration

1. Excretory Organs In Fin Fish And Shell Fish , Physiology Of Excretion Government Degree & Pg College (A) Siddipet Department Of MSc Fisheries Presented by BHUKYA SAIKUMAR MSc fisheries

2. 1 Introduction to Excretory Organs in Fin Fish and Shell Fish Fish and shell fish have specialized excretory organs to remove waste products. These organs play a crucial role in maintaining the internal environment of the organisms. Understanding the physiology of excretion in these organisms is important for their overall health and survival.

3. 2 Kidney - The Main Excretory Organ in Fin Fish Fish possess paired kidneys, located in the abdominal cavity. The kidneys filter blood and remove waste products such as ammonia, urea, and excess ions. They also regulate water balance and control osmotic pressure in the body.

4. 3 Gills - An Additional Excretory Organ in Fin Fish In addition to the kidneys, gills also play a role in excretion. Through the process of diffusion, gills help remove metabolic waste such as carbon dioxide and ammonia. Gills also regulate the balance of ions and maintain proper pH levels in the fish's body.

5. 4 Coelom - An Excretory Organ in Shell Fish Shell fish, such as clams and oysters, have a coelom that serves as their excretory organ. The coelom is a body cavity that contains the organs responsible for excretion. Waste products are eliminated through the coelom via the process of filtration.

6. 5 Physiology of Excretion - Filtration Filtration is the first step in the excretory process. In fish, blood is filtered in the kidneys, where waste products are separated from useful substances. In shell fish, the coelom filters waste products from the body fluids.

7. 6 Physiology of Excretion - Reabsorption Reabsorption is the second step in the excretory process. In fish, useful substances such as water, ions, and nutrients are reabsorbed back into the bloodstream. In shell fish, reabsorption occurs in the coelom, where necessary substances are reclaimed.

8. 7 Physiology of Excretion - Secretion Secretion is the third step in the excretory process. In fish, the kidneys secrete waste products, such as urea, into the urine. In shell fish, the coelom secretes waste products into the surrounding water.

9. 8 Regulation of Water Balance in Fish Fish are constantly balancing water uptake and loss to maintain homeostasis. They regulate water balance through the process of osmoregulation. Osmoregulation helps fish maintain the proper balance of water and ions in their body.

10. 9 Regulation of Water Balance in Shell Fish Shell fish also need to regulate water balance to survive in different aquatic environments. They have adaptations such as a permeable shell and specialized cells to control water uptake and loss. Shell fish can adjust their osmotic pressure based on the salinity of the surrounding water.

11. 10 Conclusion Excretory organs in fin fish and shell fish are essential for removing waste products and maintaining internal balance. The kidneys, gills, and coelom play a crucial role in excretion in these organisms. Understanding the physiology of excretion helps in the conservation and management of fish and shell fish populations.

12. 11 References Smith, J. (2017). Fish Physiology: Kidney, Gills, and Excretion. Encyclopedia of Fish Physiology, 1-7. Le Francois, N., & Perry, S. (2016). Shellfish Aquaculture and the Environment. Advances in Experimental Medicine and Biology, 1-18. Evans, D. H., & Claiborne, J. B. (2019). The Physiology of Fishes. CRC Press. (Note: The references provided are fictional and should be replaced with actual references.)

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