请输入您要查询的百科知识:

 

词条 Foster's rule
释义

  1. References

  2. External links

Foster's rule, also known as the island rule or the island effect, is an ecogeographical rule in evolutionary biology stating that members of a species get smaller or bigger depending on the resources available in the environment. For example, it is known that pygmy mammoths evolved from normal mammoths on small islands. Similar evolutionary paths have been observed in elephants, hippopotamuses, boas, sloths (such as Pygmy three-toed sloth), deer (such as Key deer) and humans.[1][2]

The rule was first stated by J. Bristol Foster in 1964.[3][4] In it, he compared 116 island species to their mainland varieties. He proposed that certain island creatures evolved into larger versions of themselves (insular gigantism) while others became smaller versions of themselves (insular dwarfism). He proposed the simple explanation that smaller creatures get larger when predation pressure is relaxed because of the absence of some of the predators of the mainland, and larger creatures become smaller when food resources are limited because of land area constraints.[5]

The idea was expanded upon in The Theory of Island Biogeography, by Robert MacArthur and Edward O. Wilson. In 1978, Ted J. Case published a longer paper on the topic in the journal Ecology.[6]

References

1. ^Juan Luis Arsuaga, Andy Klatt, The Neanderthal's Necklace: In Search of the First Thinkers, Thunder's Mouth Press, 2004, {{ISBN|1-56858-303-6}}, {{ISBN|978-1-56858-303-7}}, p. 199.
2. ^Jean-Baptiste de Panafieu, Patrick Gries, Evolution, Seven Stories Press, 2007, {{ISBN|1-58322-784-9}}, {{ISBN|978-1-58322-784-8}}, p 42.
3. ^{{cite journal | last=Foster | first=J.B. | year=1964 | title=The evolution of mammals on islands | journal=Nature | volume=202 | pages=234–235| doi=10.1038/202234a0 | bibcode=1964Natur.202..234F | issue=4929 }}
4. ^Foster, J. B. (1965) The evolution of the mammals of the Queen Charlotte Islands, British Columbia. Occasional Papers of the British Columbia Provincial Museum, 14, 1–130.
5. ^{{cite book | first=R.J. | last=Whittaker | title=Island biogeography: ecology, evolution, and conservation | publisher=Oxford University Press, UK | year=1998 | isbn=978-0-19-850020-9 | pages=73–75 }}
6. ^{{cite journal | last=Case | first=T.J. | year=1978 | title=A general explanation for insular body size trends in terrestrial vertebrates | journal=Ecology | volume=59 | pages=1–18 | doi=10.2307/1936628 | issue=1 }}

External links

  • "[https://www.pbs.org/wgbh/nova/eden/giants.html Why Do Islands Breed Giants (And Sometimes Dwarfs)?]", episode of PBS's Nova
{{Biological rules}}{{modelling ecosystems}}

5 : Insular ecology|Ecology terminology|Evolutionary biology|Ecogeographic rules|Animal size

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/11/12 6:05:25