Fish Reproduction

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Across
  1. 5. egg __________; male dives into substrate to fertilize eggs
  2. 6. all fish __________ by sexual reproduction
  3. 7. develop superior strains through selective breeding and __________ methods
  4. 10. example of environmental manipulation
  5. 11. __________ propagation, males and females are placed together in a breeding area such as a small pond or an enclosure where they spawn naturally
  6. 12. ___________ species; mouth brooders, fertilized eggs guarded by female only
  7. 14. insufficient of ___________ foods
  8. 16. example of environmental manipulation; water __________
  9. 17. fertilized by spawning before gathered in mouth
  10. 20. need for induced breeding because of __________ condition like rain, temperature and currents of water
  11. 21. __________ sized breeders are avoided for difficulty in handling
  12. 22. common species are bass, gourami and bettas
  13. 24. egg __________; male swims by and sprays simen, or milt, around the area
  14. 25. __________ is external in most fish species
  15. 27. __________ breeding is a technique where organism is stimulated by particular hormone or other synthetic hormone or by providing condition, introduced to breed in captive condition
  16. 28. example of environmental manipulation
  17. 29. maximize __________
Down
  1. 1. hormone induction should select __________ that healthy, fully ripe and medium sized
  2. 2. hormone dosage should be __________, according to given protocols
  3. 3. __________ species; mouth brooders, either male or both male and female guard eggs
  4. 4. __________ propagation; the fish (usually the females only) are first given one injection of chemical, such as a pituitary gland extract, which will trigger spawning.
  5. 8. __________ insufficient release of hormones in captive condition
  6. 9. fish __________ is to have sexually mature male and female fish producing milt and eggs
  7. 13. large quantities of eggs and sperm are __________ released into the water by female and males
  8. 15. egg __________; male swims by and fertilized eggs
  9. 18. induced breeding needed for ___________ that didn't reproduce in captivity
  10. 19. obtain fish supply outside of the normal spawning season; important for __________ culture
  11. 23. __________ propagation; the females are given one or more injections of chemicals which regulate the final ripening of dormant eggs in the ovaries
  12. 24. process of egg release is termed __________
  13. 26. __________ species; nest builders, fertilized eggs are quarded by brood parent