Search Results - "Becker, Peter H."

Telomere length reflects phenotypic quality and costs of reproduction in a long-lived seabird by Bauch, Christina, Becker, Peter H., Verhulst, Simon

“…Telomere length is associated with cellular senescence, lifestyle and ageing. Short telomeres indicate poor health in humans and reduced life expectancy in…”
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Predicting reproductive success from hormone concentrations in the common tern (Sterna hirundo) while considering food abundance by Riechert, Juliane, Becker, Peter H, Chastel, Olivier

“…In birds, reproductive success is mainly a function of skill or environmental conditions, but it can also be linked to hormone concentrations due to their…”
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Reproductive improvement and senescence in a long-lived bird by Rebke, Maren, Coulson, Tim, Becker, Peter H, Vaupel, James W

“…Heterogeneity within a population is a pervasive challenge for studies of individual life-histories. Population-level patterns in age-specific reproductive…”
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Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales by Keogan, Katharine, Daunt, Francis, Wanless, Sarah, Phillips, Richard A., Alvarez, David, Anker‐Nilssen, Tycho, Barrett, Robert T., Bech, Claus, Becker, Peter H., Berglund, Per‐Arvid, Bouwhuis, Sandra, Burr, Zofia M., Chastel, Olivier, Christensen‐Dalsgaard, Signe, Descamps, Sebastien, Diamond, Tony, Elliott, Kyle, Erikstad, Kjell‐Einar, Harris, Mike, Hentati‐Sundberg, Jonas, Heubeck, Martin, Kress, Stephen W., Langset, Magdalene, Lorentsen, Svein‐Håkon, Major, Heather L., Mallory, Mark, Mellor, Mick, Miles, Will T. S., Moe, Børge, Mostello, Carolyn, Newell, Mark, Nisbet, Ian, Reiertsen, Tone Kirstin, Rock, Jennifer, Shannon, Paula, Varpe, Øystein, Lewis, Sue, Phillimore, Albert B.

“…Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to…”
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Population sex ratio shift from fledging to recruitment: consequences for demography in a philopatric seabird by Becker, Peter H, Ezard, Thomas H.G, Ludwigs, Jan-Dieter, Sauer-Gürth, Hedwig, Wink, Michael

“…In many dimorphic bird species, offspring sex ratio is skewed towards the production of the smaller sex. Offspring sex ratio can be biased in monomorphic birds…”
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Response of testosterone and corticosterone plasma levels to the challenge of sibling competition: A study in common terns by Braasch, Alexander, Becker, Peter H, Groothuis, Ton G.G

“…Highlights • We investigated the response of T and CORT to food competition in common tern chicks. • In siblings T was lower after intense food competition as…”
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Telomere length is heritable and genetically correlated with lifespan in a wild bird by Vedder, Oscar, Moiron, Maria, Bichet, Coraline, Bauch, Christina, Verhulst, Simon, Becker, Peter H., Bouwhuis, Sandra

“…Telomeres are protective caps at the end of eukaryotic chromosomes that shorten with age and in response to stressful or resource‐demanding conditions. Their…”
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Sex-specific pathways of parental age effects on offspring lifetime reproductive success in a long-lived seabird by Bouwhuis, Sandra, Vedder, Oscar, Becker, Peter H.

“…The conditions under which individuals are reared vary and sensitivity of offspring to such variation is often sex-dependent. Parental age is one important…”
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Telomere length is repeatable, shortens with age and reproductive success, and predicts remaining lifespan in a long‐lived seabird by Bichet, Coraline, Bouwhuis, Sandra, Bauch, Christina, Verhulst, Simon, Becker, Peter H., Vedder, Oscar

“…Telomeres are protective caps at the end of chromosomes, and their length is positively correlated with individual health and lifespan across taxa…”
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Timing of initial arrival at the breeding site predicts age at first reproduction in a long-lived migratory bird by Becker, Peter H, Dittmann, Tobias, Ludwigs, Jan-Dieter, Limmer, Bente, Ludwig, Sonja C, Bauch, Christina, Braasch, Alexander, Wendeln, Helmut

“…In long-lived vertebrates, individuals generally visit potential breeding areas or populations during one or more seasons before reproducing for the first…”
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Influences of Sex, Sex Composition of Brood and Hatching Order on Mass Growth in Common Terns Sterna hirundo by Becker, Peter H., Wink, Michael

“…We studied sex-dependent mass growth of chicks of the monomorphic common tern Sterna hirundo which fledged at a colony site in Wilhelmshaven, Germany, between…”
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Within the genome, long telomeres are more informative than short telomeres with respect to fitness components in a long‐lived seabird by Bauch, Christina, Becker, Peter H, Verhulst, Simon

“…Telomeres, DNA‐protein structures at chromosome ends, shorten with age, and telomere length has been linked to age‐related diseases and survival. In vitro…”
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Age-dependent trait variation: the relative contribution of within-individual change, selective appearance and disappearance in a long-lived seabird by Zhang, He, Vedder, Oscar, Becker, Peter H., Bouwhuis, Sandra

“…1. Within populations, the expression of phenotypic traits typically varies with age. Such age-dependent trait variation can be caused by within-individual…”
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Telomere length reflects reproductive effort indicated by corticosterone levels in a long-lived seabird by Bauch, Christina, Riechert, Juliane, Verhulst, Simon, Becker, Peter H.

“…Telomere length (TL) is a candidate biomarker of ageing and phenotypic quality, but little is known of the (physiological) causes of TL variation. We…”
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Feather mercury concentrations in Southern Ocean seabirds: Variation by species, site and time by Becker, Peter H., Goutner, Vassilis, Ryan, Peter G., González-Solís, Jacob

“…We studied mercury contamination in 25 seabird species breeding along a latitudinal gradient across the Southern Ocean, from Gough Island (40°S) through Marion…”
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Survival and local recruitment are driven by environmental carry-over effects from the wintering area in a migratory seabird by Szostek, K. Lesley, Becker, Peter H

“…We estimated annual apparent survival rates, as well as local recruitment rates in different age groups and for different breeding status in the common tern…”
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What makes a good parent? Sex-specific relationships between nest attendance, hormone levels, and breeding success in a long-lived seabird by Riechert, Juliane, Becker, Peter H

“…Biparental care is found across taxa, but sex-specific contributions vary greatly both between and within species. Factors underlying intraspecific variation…”
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Effects of Parental Quality and Effort on the Reproduction of Common Terns by Wendeln, Helmut, Becker, Peter H.

“…1. Age-related patterns of reproduction in birds are often interpreted in terms of changing reproductive value with age: as residual reproductive value…”
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Fitness prospects: effects of age, sex and recruitment age on reproductive value in a long‐lived seabird by Zhang, He, Rebke, Maren, Becker, Peter H, Bouwhuis, Sandra, Both, Christiaan

“…Reproductive value is an integrated measure of survival and reproduction fundamental to understanding life‐history evolution and population dynamics, but…”
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Immigrants are attracted by local pre‐breeders and recruits in a seabird colony by Szostek, K. Lesley, Schaub, Michael, Becker, Peter H, Weimerskirch, Henri

“…Immigration is a major demographic factor shaping population dynamics. However, due to methodological difficulties, the extent of immigration and factors…”
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