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LCSH_x
Source : Ifremer

Resource partitioning within a tropical seabird community: new information from stable isotopes

Cherel, Y et al. (août 2008)

Characteristics of the tropical oceanic environment (low productivity, little seasonality) and poor diversity of tropical seabird foraging methods and prey relative to temperate and polar species suggest that tropical seabirds overall encompass a narrow range of isotopic niches, with large overlaps ...

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Source : DANS

Partial duplication of the PRLR and SPEF2 genes at the late feathering locus in chicken

Elferink, M.G. et al. (2008)

Background One of the loci responsible for feather development in chickens is K. The K allele is partially dominant to the k+ allele and causes a retard in the emergence of flight feathers at hatch. The K locus is sex linked and located on the Z chromosome. Therefore, the locus can be utilized to ...

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Source : DANS

Experimental studies on the infectivity of non-culturable forms of Campylobacter spp. in chicks and mice.

Giessen, van de, A.W. et al. (1996)

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Source : DANS

Participation of breast and leg muscles in shivering thermogenesis in young turkeys and guinea fowl

Dietz, Maurine W. et al. (1997)

Turkey (Meleagris gallopavo) and guinea fowl (Numida meleagris) chicks (0-27 days posthatch) were exposed to decreasing or increasing ambient temperatures. Root mean square electromyographic activity of musculus pectoralis (m. pect.) and musculus iliotibialis (m. iliot.) was recorded simultaneously ...

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Source : FMSH

King penguin, the return

JOUVENTIN, Pierre et al. (1 janv. 1995)

Perdu au milieu de l'océan Austral, sous les 40èmes rugissants, l'archipel Crozet abrite trois millions de manchots royaux, la moitié de la population mondiale. Contrairement à la plupart des oiseaux de haute mer, cette espèce est en pleine expansion. Pourtant, toutes les étapes de ...

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Source : DANS

Maternal yolk testosterone in canary eggs: toward a better understanding of mechanisms and function

Muller, Wendt et al. (2010)

Maternal yolk androgens in avian eggs have been shown to affect numerous offspring traits. These changes in offspring phenotype represent examples of maternal effects and are thought to adjust offspring development to the posthatching environment. When studying the functional consequences of yolk ...

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Source : DANS

Reproductive timing and investment in relation to spring warming and advancing agricultural schedules

Schroeder, Julia et al. (avr. 2012)

Advances in mowing schedules have led to early and rapid declines in the seasonal food availability for, and survival rates of, chicks of grassland-breeding waders. Concurrently, increased levels of soil fertilization may have improved food abundance for adults. These developments are assumed to ...

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Source : DANS

Experimental Evidence for Genetic Heritability of Maternal Hormone Transfer to Offspring

Okuliarova, Monika et al. (juin 2011)

In many animal species, embryos are exposed to maternal hormones that affect their development. Maternal hormone transfer varies with environmental conditions of the mother and is often interpreted as being shaped by natural selection to adjust the offspring to prevailing environmental conditions. ...

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Source : DANS

Effects of hatching time and hatching system on broiler chick development

Ven, van de, L.J.F. (2012)

 Key words: hatching time, hatching system, chick physiology, broiler growth, chick quality. Chicks hatch over a time window of 24-36 hours and are only removed from the hatcher when the majority of the chicks have hatched. Especially for the early hatching chicks this leads to delays in the ...

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Source : DANS

Effects of food abundance and early clutch predation on reproductive timing in a high Arctic shorebird exposed to advancements in arthropod abundance

Reneerkens, Jeroen et al. (28 oct. 2016)

Climate change may influence the phenology of organisms unequally across trophic levels and thus lead to phenological mismatches between predators and prey. In cases where prey availability peaks before reproducing predators reach maximal prey demand, any negative fitness consequences would ...

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