Intraspecific and interspecific competition, Biology

In the preceding block you learnt the Darwinian premise of natural selection based on certain facts and deductions thereof. You would have noticed that one of the foundations for the concept of natural selection relates to competition among the individuals belonging to the same species - the intraspecific competition. You may also recall that intraspecific competition involves two components - (1) the individuals belonging to the same species compete among themselves for thc same requisites from the eilvironment which results in physical competition, including the competition for mates and the individuals belonging to a species may compete as to which of them leaves behind a major share of descendents in the future populations. The second type of competition is more subtle, by which is meant that individuals do not compete directly or in any physical way. The success of the second type of competition is measured in terms of the survival of offsprings, and therefore alleles in the next generation. You might have by now deduced that the two types of competition are interrelated. Success in the first type of competition known as ecological intraspecific competition is a prerequisite for success in the second type of competition namely reproductive intraspecific competition. It does not mean that ecological success always ensures reproductive success, for ecologically successful individuals may be sterile; but ecological success is always necessary to achieve reproductive success. We may then summarise that intraspecific competition results in adaptations to a given environment and this helps to perpetuate the genotypes of successful individuals generation after generation.

Posted Date: 4/5/2013 6:03:39 AM | Location : United States







Related Discussions:- Intraspecific and interspecific competition, Assignment Help, Ask Question on Intraspecific and interspecific competition, Get Answer, Expert's Help, Intraspecific and interspecific competition Discussions

Write discussion on Intraspecific and interspecific competition
Your posts are moderated
Related Questions
Q. How can you describe Pleural Effusion? Fluid has a density indistinguishable from soft tissue on a radiograph. Pleural fluid tends to accumulate in the deepest part of the

Define the effect of SCFA on Sodium Absorption? SCFAs (short chain fatty acids) have a stimulatory effect on sodium absorption from colonic lumen. The unionized SCFA crosses th

I need help with p-p, q-q and r-r intervals and heart rates

Mosaic Endosperm - Variants of Endosperm In some plants patches of two different colors appear in the tissues of the endosperm providing a mosaic design. In maize, red and whi

Problems with untreated/ammoniated crop residues Besides the low energy and protein contents, crop residues generally contain low content of minerals such as Calcium, Phosphor

Why is the human placenta referred to as haemochorial type? Name the hormone it secretes to facilitate parturition.

Animals are able to synthesize cholesterol de novo by an elegant series of reactions in that all 27 carbon atoms of cholesterol are derived from acetyl CoA. The  acetate  units  ar

Explain the Spectrophotometer or Colorimete? These can be used to measure the microbial growth or can be used in various microbial and biochemical assays. Figure illustrates t

Explain how a human eye is working for the body. Every tissue in the body requires basic components which are either derived from the body itself or we acquire them from extern

Define Classification of foods based on pH? Of these, the nature of the food, primarily the pH of food, is the most significant determinant of how severely the food will be pro