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. Can Serotonin used in consciousness? Serotonin complements the action of noradrenalin and acetylcholine in promoting wakefulness and cortical responsiveness. Experiments pro

Define the genetic growth pattern of infant? It takes 1-3 years for an infant to establish his own genetic growth pattern. Once this figure is established (such as height-for-a

WALL OF EYE BALL - Outer to inner 3 layers present. 1. Sclerotic or fibrous Tunic 2. Choroid or uvea or vescular Tunic. 3. Retina or neuro sensory tunic. Sclerotic

Minerals  :-  Zinc Food Source      Meats, cereals.  Nutritional Functional role Essential nutrient: Deficiency produces loss of appetite, growth retardation, skin

R in d e rp es t It is also known as cattle plague resulting in high fever, diarrhoea and high mortality rates. In year 2006, OIE has declared that India is free from rin


Define Foods Effect on Drug Transport? Many drugs are transported in blood bound lo plasma proteins. Severe malnutrition or diseases affecting the synthesis of plasma proteins

CONTRACTI L E CELLS In addition to above mentioned three types of muscular tissue, there are contractile cells. These are as follows. 1.      Myoepithelial Cells (= M

Q. How are the three major arthropod classes characterized according to the number of limbs? Most crustaceans have five pairs of limbs. Arachnids present four pairs and Insects

what is the function of the tongue in the digestive system?