The trade-off between offspring number and quality in the great tit Parus major

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The trade-off between offspring number and quality in the great tit Parus major. / Smith, Henrik G.; Källander, Hans; Nilsson, Jan-Åke.

In: Journal of Animal Ecology, Vol. 58, 1989, p. 383-401.

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TY - JOUR

T1 - The trade-off between offspring number and quality in the great tit Parus major

AU - Smith, Henrik G.

AU - Källander, Hans

AU - Nilsson, Jan-Åke

PY - 1989

Y1 - 1989

N2 - (1) Trade-offs between brood size and offspring growth and survival were manipulating the size of 221 great tit Parus major L. broods between 1983 (2) Nestling mass, wing length and tarsus length were inversely related to Hatching date also affected nestling growth, but its effect differed between Intrabrood variability in nestling size increased with brood size. (3) Nestling survival was inversely related to brood size. Small nestlings suffered mortality than large ones. The difference in nestling survival rate between categories was too small to equalize their productivity. (4) Fledgling survival to the autumn and to the following breeding season inversely related to brood size; fledglings from reduced broods survived better from control broods, which in turn survived better than fledglings from enlarged This resulted in the most productive category being the control broods. The fledglings increased with their size as nestlings and decreased with their hatching (5) The sex-ratio among independent fledglings was affected by brood size tion; proportionally more males survived in enlarged than in reduced broods. (6) Dispersal distance of juveniles was not affected by brood size, size hatching date, whereas it was affected by sex. The effects of starvation competition on fledgling survival and dispersal

AB - (1) Trade-offs between brood size and offspring growth and survival were manipulating the size of 221 great tit Parus major L. broods between 1983 (2) Nestling mass, wing length and tarsus length were inversely related to Hatching date also affected nestling growth, but its effect differed between Intrabrood variability in nestling size increased with brood size. (3) Nestling survival was inversely related to brood size. Small nestlings suffered mortality than large ones. The difference in nestling survival rate between categories was too small to equalize their productivity. (4) Fledgling survival to the autumn and to the following breeding season inversely related to brood size; fledglings from reduced broods survived better from control broods, which in turn survived better than fledglings from enlarged This resulted in the most productive category being the control broods. The fledglings increased with their size as nestlings and decreased with their hatching (5) The sex-ratio among independent fledglings was affected by brood size tion; proportionally more males survived in enlarged than in reduced broods. (6) Dispersal distance of juveniles was not affected by brood size, size hatching date, whereas it was affected by sex. The effects of starvation competition on fledgling survival and dispersal

U2 - 10.2307/4837

DO - 10.2307/4837

M3 - Article

VL - 58

SP - 383

EP - 401

JO - Journal of Animal Ecology

JF - Journal of Animal Ecology

SN - 1365-2656

ER -