Animalscaretips
Explain why eyesight is not an important adaptation to life in a cave. There is NO light in a cave. All living things need light to see. Eyesight is not a sense that the cave fish can use in darkness.
- Why did the cave fish evolved without eyesight?
- Do blind cavefish have eyes?
- What is the most important adaptation of the cavefish?
- How does the cave fish manage without eyes?
- Why do organisms found in caves lack eyes and pigment?
- What kind of sensory adaptation would you hypothesize the cave fish has to allow?
- What kind of sensory adaptation do cave fish have?
- Why is the Cavefishes new adaptation helpful for the fish?
- Why eyesight is a vestigial structure for a cave fish?
- What can similarities and differences between organisms tell you about their evolutionary history?
- Do you think birds and insects have common ancestor Why or why not?
- What can cause damage to the caves?
- Does lion live in cave?
- Why is the cave environment considered as fragile and delicate?
Why did the cave fish evolved without eyesight?
The fact that cave fishes don't use their eyes has no effect on their genes. Instead, cave fishes are blind because something happened to the genes that control the development of their eyes. This change is passed on from parent to offspring. That explains why a blind fish would have blind offspring.
Do blind cavefish have eyes?
Few animals have ignored the warning “use it or lose it” as spectacularly as the Mexican blind cavefish (Astyanax mexicanus), which no longer has eyes. Now scientists may have solved the riddle of why the fish lost their eyes in the dark.
What is the most important adaptation of the cavefish?
Each denticle has a rod covered with enamel, and a nerve at the base surrounded by muscle tissue. This unique adaptation assists the fish with the detection of water flow and helps him survive in fast-flowing, turbulent waters.
How does the cave fish manage without eyes?
The Mexican blind cavefish does not have eyes, but it can "see" obstacles in dark caves by puckering its mouth and producing bursts of suction, according to a new study. The research describes this unique form of navigation for the first time.
Why do organisms found in caves lack eyes and pigment?
They lack pigment (color) because they have no need for protection from the sun's rays or for camouflage to hide them from predators. Many have no eyes or eyes that are poorly developed. Eyes are not necessary because of the lack of light.
What kind of sensory adaptation would you hypothesize the cave fish has to allow?
What kind of sensory adaptation would you hypothesize the cave fish has to allow it to navigate in a cave, including catching and eating food? The cave fish has special sense organs on its body surface that respond to the presence of different chemicals in the water. This would be analogous to our sense of smell.
What kind of sensory adaptation do cave fish have?
Blind cave fish compensate for their lack of sight by having a more sensitive lateral line system which detects vibrations or changes in pressure in the water. The lateral line is a specialized sensory organ found in fish. It is a canal system running just under the skin along each side of the fish's body.
Why is the Cavefishes new adaptation helpful for the fish?
The recognition of a fish's own odor or other chemical cues in the environment is likely to be adaptive in caves, because the risk of repeatedly exploring the same volume of water is minimized, which allows the fish to invest more time and energy for other functions, such as reproduction, in an energy-limited ...
Why eyesight is a vestigial structure for a cave fish?
mexicanus is the result of natural selection, pleiotropy, and genetic drift, not individual effort. Natural selection gives organisms what they need. “The fish need to save energy so they lose their eyesight.” “The fish lose their eyes because they don't need them.”
What can similarities and differences between organisms tell you about their evolutionary history?
'The evidence for evolution' shows how the similarities between living creatures can be understood in terms of evolution. ... Similarities between species have a natural and straightforward explanation in the idea that organisms are related through an evolutionary process of descent from common ancestors.
Do you think birds and insects have common ancestor Why or why not?
Analogous structures, on the other hand, can be represented by the wings of birds and of insects; the structures are used for flight in both types of organisms, but they have no common ancestral origin at the beginning of their evolutionary development.
What can cause damage to the caves?
For the most part, caving accidents result from a lack of training, lack of proper equipment, lack of preparation, or poor judgment. Exercising good judgment will reduce the level of risk when caving. Falls are by far the most common type of caving accident.
Does lion live in cave?
Lions don't live in nooks, rather live under obscure trees. It's solitary when the lioness needs to bring forth her whelps, does she discover protect in a cave or refuge. Lionesses move far from whatever is left of the pride and take asylum in caves, with the end goal to ensure their young ones.
Why is the cave environment considered as fragile and delicate?
Caves and their ecosystems are considered by many scientists to be among the most fragile ecosystems on the planet. Caves are non-renewable resources that take many millions of years to form, and each delicate formation must be protected.
