the bluegill is a type of fish that cares for its young, while the ranbow trout is a type of fish that does not. the bluegilll would probably have a greater number of young survive to reproduce..why?
2007-03-05 09:57:57 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Any fish that guards its young will have a higher percentage of young survive.
2007-03-05 10:22:13 · answer #1 · answered by ecolink 7 · 0⤊ 1⤋
Because the eggs or young of the bluegill will have more protection against possible predators, since the mom (or dad) is there for them and also, their food supply will be guaranteed, whereas the other's fish young are left alone without any kind of protection or nourishment except that provided by the surrounding environment
2007-03-13 14:52:54 · answer #2 · answered by Belisa 3 · 0⤊ 0⤋
Anytime you have parents protecting their offspring they have a greater chance of survival. Internal fertilization helps those species, that preform it, to use fewer gametes and energy to produce their off spring. Those with external fertilization risk the action of having their offspring eaten before they can mature. Both of these examples are fish and fall under the external fertilization category. So the environment plays an important role in their offspring's survival. Since each organism is not endangered or extinct, I guess they are truly adapted to their situation and it really makes no difference in the long run.
2007-03-13 17:07:19 · answer #3 · answered by ATP-Man 7 · 0⤊ 0⤋