On being the right size: food-limited feedback on optimal body size
نویسندگان
چکیده
منابع مشابه
On Being the Right Size
The most obvious differences between different animals are differences of size, but for some reason the zoologists have paid singularly little attention to them. In a large textbook of zoology before me I find no indication that the eagle is larger than the sparrow, or the hippopotamus bigger than the hare, though some grudging admissions are made in the case of the mouse and the whale. But yet...
متن کاملThe minimal cell genome: "on being the right size".
"On being the right size" is in quotation marks in the title because it has been used twice before-in each case to discuss the size of biological systems in terms of interest at that time. J. B. S. Haldane (1) originally used this title in the 1920s, for a paper describing the relationship between animal size and constraints like gravity, surface tension, and food and oxygen consumption. In the...
متن کاملOn Being the Right Size as an Animal with Plastids
Plastids typically reside in plant or algal cells-with one notable exception. There is one group of multicellular animals, sea slugs in the order Sacoglossa, members of which feed on siphonaceous algae. The slugs sequester the ingested plastids in the cytosol of cells in their digestive gland, giving the animals the color of leaves. In a few species of slugs, including members of the genus Elys...
متن کاملOn being the right size: increased body size is associated with reduced telomere length under natural conditions.
Evolution of body size is likely to involve trade-offs between body size, growth rate and longevity. Within species, larger body size is associated with faster growth and ageing, and reduced longevity, but the cellular processes driving these relationships are poorly understood. One mechanism that might play a key role in determining optimal body size is the relationship between body size and t...
متن کاملOn Being the Right Size: The Impor tance of Size in Life History, Ecology, and Evolution
Living things vary enormously in body size. Across the spectrum of life, the size of animals spans more than twenty-one orders of magnitude, from the smallest (mycoplasm) at ∼10–13 g to the largest (blue whale) at 108 g (fi g. I.1, table I.1). We now know that much of this range was achieved in two “jumps” corresponding to the evolution of eukaryotes and metazoans, at 2.1 Ga and 640 Ma, respect...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2008
ISSN: 0021-8790,1365-2656
DOI: 10.1111/j.1365-2656.2008.01425.x