Food availability at birth limited reproductive success in historical humans

Ecology ◽  
2010 ◽  
Vol 91 (12) ◽  
pp. 3515-3525 ◽  
Author(s):  
Ian J. Rickard ◽  
Jari Holopainen ◽  
Samuli Helama ◽  
Samuli Helle ◽  
Andrew F. Russell ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Food Availability

Low reproductive success of great tits in the preferred habitat: A role of food availability

Ecoscience ◽  
2009 ◽  
Vol 16 (2) ◽  
pp. 145-157 ◽  
Author(s):  
Marko Mägi ◽  
Raivo Mänd ◽  
Heleri Tamm ◽  
Elo Sisask ◽  
Priit Kilgas ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Food Availability ◽  
Preferred Habitat

Effects of parental age and food availability on the reproductive success of Heermann's Gulls in the Gulf of California

Ecology ◽  
2009 ◽  
Vol 90 (4) ◽  
pp. 1084-1094 ◽  
Author(s):  
Leticia Vieyra ◽  
Enriqueta Velarde ◽  
Exequiel Ezcurra
Keyword(s):  
Reproductive Success ◽  
Food Availability ◽  
Gulf Of California ◽  
Parental Age

The influence of age on reproductive success and diet in Australasian gannets (Morus serrator) breeding at Pope's Eye, Port Phillip Bay, Victoria

2007 ◽  
Vol 55 (5) ◽  
pp. 267 ◽  
Author(s):  
T. M. Pyk ◽  
A. Bunce ◽  
F. I. Norman
Keyword(s):  
Reproductive Success ◽  
Food Availability ◽  
Fish Species ◽  
Breeding Success ◽  
Breeding Period ◽  
Chick Growth ◽  
Jack Mackerel ◽  
Commercial Fish ◽  
Red Mullet ◽  
Morus Serrator

The influence of age on reproductive success and diet was examined in ‘old’ (experienced; 12 years and older) and ‘young’ (5–8 years of age) Australasian gannets (Morus serrator) breeding at Pope’s Eye, Port Phillip Bay, Victoria during the 2002–2003 breeding period. Although food availability, as indicated by commercial fish catches, throughout this breeding period was low, there were no significant differences in breeding success or chick growth between groups. Nevertheless, old birds tended to have higher reproductive success, replacing more lost eggs and fledging chicks of a greater mass. However, old birds also laid more eggs that failed to hatch. Five fish species, including jack mackerel (Trachurus declivis), barracouta (Thyrsites atun), redbait (Emmelichthys nitidus), anchovy (Engraulis australis) and red mullet (Upeneichthys vlamingii), were important in the gannet diet during this breeding period. There were no significant differences in dietary parameters, including range of species and size of prey, between old and young gannets, nor were there any differences between those of the chicks and their parents, suggesting that adults do not forage selectively for their chicks. This study showed that even during a period of presumed low food availability, when experienced (older) birds might be expected to have enhanced success, the differences between these and less experienced (younger) birds may not be apparent.

Circadian disruption of food availability significantly reduces reproductive success in mice

2018 ◽  
Vol 105 ◽  
pp. 177-184 ◽  
Author(s):  
Shivam Swamy ◽  
Xiaobin Xie ◽  
Ayaka Kukino ◽  
Haley E. Calcagno ◽  
Michael R. Lasarev ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Food Availability ◽  
Circadian Disruption

Interactions of variation in food supply and kleptoparasitism levels on the reproductive success of Common Puffins (Fratercula arctica)

1985 ◽  
Vol 63 (12) ◽  
pp. 2743-2747 ◽  
Author(s):  
Jake Rice
Keyword(s):  
Weight Gain ◽  
Reproductive Success ◽  
Food Availability ◽  
Food Supply ◽  
Larus Argentatus ◽  
Activity Rate ◽  
Fledging Success ◽  
Herring Gulls ◽  
Fratercula Arctica ◽  
Burrow Activity

Colonies of Common Puffins (Fratercula arctica), differing in numbers of breeding Herring Gulls (Larus argentatus) present, also differed in puffin numbers, burrow placement, and burrow activity rate. All differences indicated that puffins avoided gulls. Sites differing in gull numbers did not differ, however, in puffin fledging success or weights of fledged chicks. Chick weights and fledging success were low. The pattern of weight gain by chicks was irregular over the season, although consistent among sites for individual periods. These results imply that food usually was hard to find, although occasionally locally abundant. Pressures on puffin reproductive efforts due to variation in food supply and levels of kleptoparasitism do not appear to be additive; rather, low food availability decreases the effect of gull kleptoparasitism as well.

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