Find eBook best deals and download PDF Love & Best Witches by Maria Mann

Love & Best Witches by Maria Mann

Page Updated: Feb 21, 2017
Book Views: 1620

Author
Publisher
Epic Press
Date of release
Pages
194
ISBN
9781906557096
Binding
Paperback
Illustrations
Format
PDF, EPUB, MOBI, TXT, DOC
Rating
5
39

Reproductive strategies in the animal world span the entire Range of extreme variants of "the R" when formed the maximum number of eggs, but no care for the offspring, to the extreme versions of "K", where the main role is played by taking care of the offspring, and the frequency of births reduced to a minimum. An extreme example of R-strategy - the oyster that produces up to 500 million eggs per year. An extreme example of K-strategy - large anthropoids (gorillas, chimpanzees and orangutans), give birth to a cub once every five or six years. Between them there are all the other living beings, who can be found all the transitional gradations between R and C. Both methods are effective until they reach the limit of their capabilities. Suppose an oyster could double the number of eggs - to bring it up to a billion. But if the total amount of energy consumed must be constant, then one egg it will account for half. This can reduce egg viability so that the number of individuals reaching maturity, will decline even more, although it was so very small. It is clear that R-strategy pure and that the disadvantageous features of this method are already in use to the limit at lower organized animals such as oysters. In fact, the R-strategy, taken to the extreme, can be considered as an inefficient way of reproduction. What is the point of producing half the embryos, if one will survive to maturity of less than ten?



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