. Advances in the study of mammalian behavior. Mammals. 634 Spec. Publ. Amer. Soc. Mamm. 7 lOOOOr ^ 1000 100. LIFESPAN LIFE EXPECTANCY AT BIRTH AGE AT FIRST REPRODUCTION GESTATION TIME 10 100 BODY WEIGHT (kg) 1000 Fig. 1. Relationships between different life history variables and body weight in artiodactyls (from Western, 1979). bred every other year. By the time of the next crash, each large morph introduced would have four daughters, six granddaughters and three great-granddaughters. In contrast, each small morph would have nine daughters, 36 granddaughters, 84 great-grand- daughters, 125 gr
. Advances in the study of mammalian behavior. Mammals. 634 Spec. Publ. Amer. Soc. Mamm. 7 lOOOOr ^ 1000 100. LIFESPAN LIFE EXPECTANCY AT BIRTH AGE AT FIRST REPRODUCTION GESTATION TIME 10 100 BODY WEIGHT (kg) 1000 Fig. 1. Relationships between different life history variables and body weight in artiodactyls (from Western, 1979). bred every other year. By the time of the next crash, each large morph introduced would have four daughters, six granddaughters and three great-granddaughters. In contrast, each small morph would have nine daughters, 36 granddaughters, 84 great-grand- daughters, 125 great-great-granddaughters, and 121 great-great- great-granddaughters! Our example is obviously absurd for all other things are not equal and increased body size is likely to influence survival, repro- ductive success, and breeding lifespan so that fitness of the small morph would be reduced and that of the large morph relatively enhanced. However, there are inevitable costs associated with major size increases and we should seek to identify the benefits of increased size in particular Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eisenberg, John Frederick; Kleiman, Devra G; American Society of Mammalogists. [Shippensburg, Pa?] : American Society of Mammalogists
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmammals
