Details

Title: !Fishes 2

Description: Development: Developmental Scheme

Total Flash Cards: 7

Created: 11/10/2009 20:14:20

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Cards in this set:

Term
After hatching yolk-sac stage
 Definition
1) larva that hasnt begun independent feeding; transition to feeding highly vulnerable stage: food must be abundant, conditions must be right for development of successful predatory behavior
Term
Flexation of notochord
 Definition
2) significant developmental step; fin rays begin to form, swimming capabilities developing
Term
Metamorphasis
 Definition
3) larva loses larval characters and gains juv/adult characters; transition to juv/aduly habitat, change in lifestyle; vulnerable stage also; can be dramatic (flat fish)
Term
Development
 Definition
yolk-sac stage -> flexation of notochord -> metamorphasis
Term
Oophagy
 Definition
eating sibling eggs; pelagic sharks (great white); teach to hunt, born as experienced hunters; first egg developts and eats eggs coming down
Term
Embryophagy
 Definition
eat sibling embryo; pelagic sharks (great white); teach to hunt, born as experienced hunters; first egg developts and eats embryos coming down
Term
Advantages of saltatory development
 Definition
separation of life stages; nice specificity adapted to size(diff needs, diff habitat req'mnts): food acquisition, predator avoidance, temp optimization