Coral Reef Environment
Only eggs or only sperm have been seen for many other species. This suggests the presence of unisexual colonies or colonies that undergo sex change as they age. This indicates cross-fertilization for species such as Acropora durvillei, Turbinaria species, Sphneotrochus rubescens, Coenopsammia species, Acropora plamata, Isophyllia sinuosa, Montastrea cavernosa, Sideratrea radians, and Symphyllia recta, as well as Pavona cactus.

Fertilization may be internal or external. Reproduction may be seasonal or continue throughout the year. The release of planwas shown to have a marked lunar periodicity in Pocillopora bulbosa. Winter spawning of this species coincided with the full moon, while summer and autumn spawning coincided with the new moon. Agarica fragilis in the Bermudan Atlantic Ocean and Manicina areolata in the Tortugas Atlantic Ocean only released planulae in summer. The Hawaiian corals Pocillopora damicornis and Cyphastrea ocellina released planulae every month of the year.

Corals with large polyps tend to have many eggs per polyp. Favia doreyensis of Low Isles had a minimum of 93 eggs. Porites haddoni varied from 6 to 250 planulae per colony. Pocillopora bulbosa had from 1 to 100 planulae per colony based upon collection of a group of branches. Thus, a moderate size colony may produce a few thousand planulae (eggs) per breeding season.

Newly released planulae may swim upward and towards the light. Some planulae swim away from

 
 
2956
12
 
   
 
 
   
    Some topics in this essay  
 
    Pacific Ocean | Indian Ocean | Barrier Reef | Red Sea | San Diego | Low Isles | | Florida Hawaii | Low Isle | Sea Panama | coral reef | coral reefs | reef corals | brain coral | species diversity | reef environment | jones eds biology | corals coral | jones eds | biology geology | reef corals york | planulae swim | endean jones eds | eds biology geology | biology geology reef |  
   
 
 
 
   
    Get Better Grades!  
 
   
 
   
 
   
    Saved Papers  
 
    Save your essays here so you can locate them quickly!  
   
 
   
    Testimonials  
 
   
"This site rocks! I got an A thanks to you helping with my writers block."
Sara B.
 
"I was in a real bind and your site helped me to come up with ideas for my paper."
Brian T.
 
"It's nice to be able to find information so quickly and easily."
Jillian T.
 
"I enjoy reading other writers papers to get their perspective on things. It makes writing my own paper so much easier."
Cindy A.
 
"I've used this site for 2 semesters and I'll be back next year for sure!"
Liz R.
 
 
   
 
 
Copyright © 1999 - 2014 CollegeTermPapers.com. All Rights Reserved. DMCA