Experimental Evidence for Food Limitation of Egg Production in Gulls

Hiom, Louise; Bolton, Mark; Monaghan, Pat; Worrall, David

doi:10.2307/3676539

Cited by 76 publications

(66 citation statements)

References 11 publications

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“…This hypothesis has found empirical support in several studies such as those of Hiom et al (1991), Svensson & Nilsson (1995) and Nager et al (1997). Accordingly, we should expect greater differences in clutch size between nests near rubbish dump and those in control areas under poor natural conditions.…”

Section: Discussionmentioning

confidence: 70%

Effect of food abundance on laying date and clutch size in the White StorkCiconia ciconia

Tortosa¹,

Pérez²,

Hillström³

2003

Bird Study

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Section: Discussionmentioning

confidence: 70%

Effect of food abundance on laying date and clutch size in the White StorkCiconia ciconia

Tortosa¹,

Pérez²,

Hillström³

2003

Bird Study

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“…The main prehatch factor affecting egg size is food availability (see e.g. Hébert and Barclay, 1988;Hiom et al, 1991;Bolton et al, 1992;Pons and Migot, 1995), so egg size reflects the conditions of food availability in the area surrounding colonies SCI. MAR., SCIENTIA MARINA…”

Section: Introductionmentioning

confidence: 99%

Growth of Audouin's gull chicks: the role of prehatch and posthatch factors

Villuendas¹,

Sarzo²

2003

Sci. Mar.

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SUMMARY:We compared the growth rates of Audouin's Gull (Larus audouinii) chicks from the Ebro Delta and Columbretes Islands. Chicks from the Columbretes Islands were reared in captivity and fed ad libitum. Wild chicks from the Ebro Delta weighed more than chicks hatched from Columbretes eggs but attained a lower weight at fledging. Chicks from Columbretes eggs hatched with a longer wing length but rates did not differ between samples during the early stages of growth. Eggs from the Ebro Delta were significantly larger than eggs from Columbretes. Hence, differences in growth appeared not to be related to differences in egg size (prehatch factor) but only in parental quality (posthatch factor) through the amount of food delivered to chicks. These differences could be due to the incapacity of parents to provide enough food during the last stages of chick development, in part because of reduced food availability at the Ebro Delta during the study period. Alternatively, differences could be attributed to a trade-off between present and future reproduction. Demographic consequences of reduced food availability for the 1993 Ebro Delta cohort should be explored in future work.

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“…Oro et al 1996b); egg size (e.g. Hiom et al 1991;Bolton et al 1992;Oro 1996;Ratcliffe et al 1998) or breeding success (e.g. Springer et al 1986;Phillips et al 1996;Gill 1999).…”

Section: Introductionmentioning

confidence: 99%

Influence of food availability on demography and local population dynamics in a long-lived seabird

Oro

Cam

Pradel

et al. 2004

Proc. R. Soc. Lond. B

165

147

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Few studies have addressed the effects of food availability as a proximate factor affecting local adult survival in long-lived organisms and their consequences at local population dynamics. We used capturerecapture analysis of resightings of 10 birth cohorts of ringed Audouin's gulls, Larus audouinii, to estimate adult survival and dispersal (both emigration and immigration). For the first time, permanent emigration (the transient effect in capture-recapture analysis) was modelled for the whole population and not only for the newly marked birds. Gulls exploit to a large extent fishes discarded from trawlers, and a trawling moratorium established since 1991 has decreased food supply for the colony. This was used as a natural experiment of food availability to assess its effects on adult survival and emigration. These and other demographic parameters were used in a projection modelling to assess the probabilities of extinction of the colony under two scenarios of lower and higher food availability. Food availability (together with the age of individuals) influenced emigration probabilities, but not adult survival, which was estimated at 0.91 (s.e. = 0.02). When food was in shorter supply during the chick-rearing period, emigration was very high (ca. 65%) for younger breeders, although this rate decreased sharply with age. Probabilities of extinction were very high when food availability was low, and when environmental stochasticity was introduced, and only stochastic immigration from the outside seemed to prevent extinction. The results highlight the importance of dispersal processes in the population dynamics of long-lived organisms.

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Experimental Evidence for Food Limitation of Egg Production in Gulls

Cited by 76 publications

References 11 publications

Effect of food abundance on laying date and clutch size in the White StorkCiconia ciconia

Effect of food abundance on laying date and clutch size in the White StorkCiconia ciconia

Growth of Audouin's gull chicks: the role of prehatch and posthatch factors

Influence of food availability on demography and local population dynamics in a long-lived seabird

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