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Explain why adaptations of particular organisms to interspecific competition may not necessarily represent instances of character displacement. What would a researcher have to demonstrate about two competing species to make a convincing case for character displacement?

Short Answer

Expert verified

When a character can only be recognized in a particular habitat, character transfer occurs. Therefore, changes in an individual species' response to a conflict with another species don't necessarily indicate character displacement.

The more prominent species must prevail over the weaker individuals in each form of conflict to support a compelling case for distinct relocation or displacement. Consequently, they would be able to get rid of anxious animals.

Step by step solution

01

Interspecific competition

In biology, interspecific competition refers to interactions in which different species compete for objects in the same environment. Interspecific rivalry can result when two species share a resource at the exact location.

02

Character displacement

Character displacement is used to describe an evolutionary transition when two similar species coexist in a single habitat. Due to natural selection, there can be divergence in the species' morphology, ecology, behavior, or physiology.

03

Characters displacement related to completion

Character displacement refers to howpopulations of closely related species undergo fast evolution after first coming into contact to reduce the likelihood of competition and hybridization.

In a genetically divergent population, trait divergence is more significant than in a physically similar population because of the displacement of features. Their inability to adapt to or live primarily in their surroundings changed aspects of their personalities.

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Most popular questions from this chapter

Based on the intermediate disturbance hypothesis, a communityโ€™s species diversity is increased by

(A) frequent massive disturbance.

(B) stable conditions with no disturbance.

(C) moderate levels of disturbance.

(D) human intervention to eliminate disturbance.

The principle of competitive exclusion states that

(A) two species cannot coexist in the same habitat.

(B) competition between two species always causes extinction or emigration of one species.

(C) two species that have exactly the same niche cannot coexist in a community.

(D) two species will stop reproducing until one species leaves the habitat.

In the Chesapeake Bay estuary, the blue crab is an omnivore that eats eelgrass and other primary producers as well as clams. It is also a cannibal. In turn, the crabs are eaten by humans and by the endangered Kempโ€™s Ridley sea turtle. Based on this information, draw a food web that includes the blue crab. Assuming that the top-down model holds for this system, describe what would happen to the abundance of eelgrass if humans stopped eating blue crabs.

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

(A) tropical communities are younger.

(B) tropical regions generally have more available water and higher levels of solar radiation.

(C) higher temperatures cause more rapid speciation.

(D) diversity increases as evapotranspiration decrease.

Food chains are sometimes short because

(A) only a single species of herbivore feeds on each plant species.

(B) local extinction of a species causes the extinction of the other species in its food chain.

(C) most of the energy in a trophic level is lost as energy passes to the next higher level.

(D) most producers are inedible.

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