Optimal Foraging in Hummingbirds: Testing the Marginal Value Theorem
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چکیده
منابع مشابه
Dimensionless invariants from foraging theory's marginal value theorem.
Copula duration (t) decreases, and proportional rate of sperm transfer (c) increases, with larger male body size in dung flies, so their dimensionless product (c. t) is approximately constant (approximately 2.2). The most recent copulating male fertilizes about 89% of the eggs laid (= 1 - e(-c.t) = 1 - e(-2.2)), independent of his body size. The conditions under which natural selection favors t...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1978
ISSN: 0003-1569
DOI: 10.1093/icb/18.4.739