FACTOID # 128: Peru’s national bird is the Andean cock of the rock (Rupicola peruviana).
 
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Encyclopedia > Breeding season

Reproduction is the creation of one thing as a copy of, product of, or replacement for a similar thing, e.g. photocopying and the making of replicas.


It is perhaps most commonly used in the context of biological reproduction and sex:

  • Sexual reproduction is a biological process by which organisms create descendants through the combination of genetic material. These organisms have two different adult sexes, male and female.
  • Asexual reproduction is a biological process by which an organism creates a genetically similar copy of itself without the combination of genetic material with another individual. For example, the Hydra (invertebrates of the order Hydroidea) and yeast are able to reproduce by budding. These organisms do not have different sexes, and they are capable of "splitting" themselves into two or more parts and regrow their body parts. Some 'asexual' species, like hydra and jellyfish, may also sexually reproduce. Most plants are capable of vegetative reproduction. Other ways of asexual reproduction are binary fission, fragmentation and spore formation.

There are a wide range of reproductive strategies employed by different species.


Some animals, like the human (sexually mature after adolescence) and Northern Gannet (5-6 years), produce few offspring. Others reproduce quickly, but unless raised in an artificial environment, most offspring do not survive to adults. A rabbit (mature after 8 months) produces 10 - 30 offspring per year, a Nile Crocodile (15 years) produces 50, and a fruit fly (10-14 days) produces up to 900. Both strategies can be favoured by evolution: animals with few offspring can spend time nurturing and protecting them, hence greatly decreasing the need to reproduce; on the other hand, animals with many offspring do not need to spend parental energy on nurturing, allowing more energy to be devoted to survival and more breeding.


These two strategies are known as K-selection (few offspring) and r-selection (many offspring). Which strategy is favoured depends on a wide range of circumstances.


See also

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  Results from FactBites:
 
Male Iguanas In Breeding Season and Human Females (1263 words)
Some articles here and in other published literature on iguanas speaks to the behavior of male iguanas towards humans during the iguana breeding season, in particular, the increased aggression of some (not all) male iguanas towards their human female during the female's monthly cycles during the iguana breeding season.
During his first season, he did hang around me a lot when I was ovulating (walking up to me, putting a foot on me, staring at me with a rather dazed and confused look in his eye).
The important thing to remember is that the tamer your iguana is before the start of his first breeding season, the easier it is going to be to deal with him during the season so long as you are aware of what to look for.
  More results at FactBites »


 

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