Abstract:
:The early life stage of long-lived species is critical to the viability of population, but is poorly understood. Longitudinal studies are needed to test whether juveniles are less efficient foragers than adults as has been hypothesized. We measured changes in the diving behaviour of 17 one-year-old king penguins Aptenodytes patagonicus at Crozet Islands (subantartic archipelago) during their first months at sea, using miniaturized tags that transmitted diving activity in real time. We also equipped five non-breeder adults with the same tags for comparison. The data on foraging performance revealed two groups of juveniles. The first group made shallower and shorter dives that may be indicative of early mortality while the second group progressively increased their diving depths and durations, and survived the first months at sea. This surviving group of juveniles required the same recovery durations as adults, but typically performed shallower and shorter dives. There is thereby a relationship between improved diving behaviour and survival in young penguins. This long period of improving diving performance in the juvenile life stage is potentially a critical period for the survival of deep avian divers and may have implications for their ability to adapt to environmental change.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Orgeret F,Weimerskirch H,Bost CAdoi
10.1098/rsbl.2016.0490subject
Has Abstractpub_date
2016-08-01 00:00:00issue
8eissn
1744-9561issn
1744-957Xpii
rsbl.2016.0490journal_volume
12pub_type
杂志文章相关文献
Biology Letters文献大全abstract::While there is increasing interest in non-consumptive effects of predators on prey, physiological effects are understudied. While physiological stress responses play a crucial role in preparing escape responses, the increased metabolic rates and shunting of energy away from other body functions, including antioxidant ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2013.0350
更新日期:2013-06-12 00:00:00
abstract::Flight feather moult in small passerines is realized in several ways. Some species moult once after breeding or once on their wintering grounds; others even moult twice. The adaptive significance of this diversity is still largely unknown. We compared the resistance to mechanical fatigue of flight feathers from the ch...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2004.0244
更新日期:2005-03-22 00:00:00
abstract::The evolutionary stability of honest signalling by offspring is thought to require that begging displays be costly, so the costs and benefits of begging--and whether they are experienced individually or by the whole brood--are crucial to understanding the evolution of begging behaviour. Begging is known to have immedi...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0870
更新日期:2011-06-23 00:00:00
abstract::Inclusive fitness theory predicts that organisms will tend to help close kin more than less related individuals. In a variety of birds and mammals, relatives are recognized by comparing their phenotype to an internal representation or template, which might be learned through either repeated exposure to family members ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0789
更新日期:2009-06-23 00:00:00
abstract::The tannuolinid Micrina belongs to the tommotiids-a common and widely distributed, but poorly understood, group of Early Cambrian fossil metazoans with multiple external organophosphatic sclerites. Recent findings of sessile articulated tommotiid scleritomes indicate that previous reconstructions of tommotiids as slug...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0277
更新日期:2008-12-23 00:00:00
abstract::Predicting the spread of wildlife disease is critical for identifying populations at risk, targeting surveillance and designing proactive management programmes. We used a landscape genetics approach to identify landscape features that influenced gene flow and the distribution of chronic wasting disease (CWD) in Wiscon...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2007.0523
更新日期:2008-02-23 00:00:00
abstract::Nursery areas are fundamental for the success of many marine species, particularly for large, slow-growing taxa with low fecundity and high age of maturity. Here, we examine the population size-class structure of the extinct gigantic shark Otodus megalodon in a newly described middle Miocene locality from Northeastern...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2020.0746
更新日期:2020-11-01 00:00:00
abstract::Inbreeding may lead to morphological malformations in a wide variety of taxa. We used genetic markers to evaluate whether malformed urodeles were more inbred and/or had less genetic diversity than normal salamanders. We captured 687 adult and 1,259 larval tiger salamanders (Ambystoma tigrinum tigrinum), assessed each ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0233
更新日期:2008-10-23 00:00:00
abstract::Anti-predator benefits associated with living in groups are multiple and taxonomically widespread. In fish shoals, individuals can exploit the confusion effect, whereby predators struggle to target a single individual among several individuals. Theory predicts that the confusion effect could be aided by homogeneity in...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0293
更新日期:2018-08-01 00:00:00
abstract::Locomotion and feeding in marine animals are intimately linked to the flow dynamics created by specialized body parts. This interaction is of particular importance during ontogeny, when changes in behaviour and scale challenge the organism with shifts in fluid regimes and altered functionality. Previous studies have i...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0068
更新日期:2010-06-23 00:00:00
abstract::Darwin devoted much of his working life to the study of plant reproductive systems. He recognized that many of the intricacies of floral morphology had been shaped by natural selection in favour of outcrossing, and he clearly established the deleterious effects of self-fertilization on progeny. Although Darwin hypothe...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2009.0142
更新日期:2009-06-23 00:00:00
abstract::Dispersal is an important mechanism used to avoid inbreeding. However, dispersal may only be effective for part of an individual's lifespan since, post-dispersal individuals that breed over multiple reproductive events may risk mating with kin of the philopatric sex as they age. We tested this hypothesis in black grou...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2011.0379
更新日期:2011-12-23 00:00:00
abstract::There is growing interest in the capacity of mangrove ecosystems to sequester and store 'blue carbon'. Here, we provide a synthesis of 66 dated sediment cores with previously calculated carbon accumulation rates in mangrove ecosystems to assess the effects of environmental and anthropogenic pressures. Conserved sedime...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0237
更新日期:2018-10-31 00:00:00
abstract::Parasite-mediated competition can shape community structure and host distribution. If two species compete for resources, parasites may indirectly change the outcome of competition. We tested the role of a trematode parasite in mediating microhabitat use by congeneric isopods Austridotea annectens and Austridotea lacus...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2017.0671
更新日期:2018-02-01 00:00:00
abstract::The extreme body size of blue whales requires a high energy intake and therefore demands efficient foraging strategies. As an obligate lunge feeder on aggregations of small zooplankton, blue whales engulf a large volume of prey-laden water in a single, rapid gulp. The efficiency of this feeding mechanism is strongly d...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0986
更新日期:2013-02-23 00:00:00
abstract::Terrestrial arthropods, at constant risk from desiccation, are highly sensitive to atmospheric temperature and humidity. A physiological marker of these abiotic conditions could highlight phenotypic adaptations, indicate niche partitioning, and predict responses to climate change for a group representing three-quarter...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.1171
更新日期:2011-08-23 00:00:00
abstract::Understanding the relationship between disease transmission and host density is essential for predicting disease spread and control. Using long-term data on sarcoptic mange in a red fox Vulpes vulpes population, we tested long-held assumptions of density- and frequency-dependent direct disease transmission. We also as...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2014.0524
更新日期:2014-10-01 00:00:00
abstract::The ability to perceive the Earth's magnetic field, or magnetoreception, exists in numerous animals. Although the mechanism underlying magnetoreception has not been clearly established in any species, in salmonid fish, it is hypothesized to occur by means of crystals of magnetite associated with nervous tissue such as...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0209
更新日期:2018-06-01 00:00:00
abstract::Human-induced environmental change can affect the evolutionary trajectory of populations. In Mexico, indigenous Zoque people annually introduce barbasco, a fish toxicant, into the Cueva del Azufre to harvest fish during a religious ceremony. Here, we investigated tolerance to barbasco in fish from sites exposed and un...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0663
更新日期:2011-04-23 00:00:00
abstract::The mid-domain effect (MDE), a bias in species richness towards the midpoint of a given geographical dimension, has been used as a null model in macro-ecological studies. Departures from a MDE are often thought of as interesting. The MDE is a product of the interaction between geometric boundaries and range locations,...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2005.0297
更新日期:2005-06-22 00:00:00
abstract::Mosquitoes, which evade contact with long-lasting insecticidal nets and indoor residual sprays, by feeding outdoors or upon animals, are primary malaria vectors in many tropical countries. They can also dominate residual transmission where high coverage of these front-line vector control measures is achieved. Compleme...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0352
更新日期:2012-10-23 00:00:00
abstract::Plain-tailed wrens (Thryothorus euophrys) live in groups that sing synchronized choruses, the contributions of females and males alternating with each other in cycles, within which each sex sings two of the four parts, the whole achieving near perfect synchrony. As each bird has a repertoire of ca 20 phrases of each t...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2005.0373
更新日期:2006-03-22 00:00:00
abstract::Various vertebrate species use relative numerosity judgements in comparative assessments of quantities for which they use larger/smaller relationships rather than absolute number. The numerical ability of honeybees shares basic properties with that of vertebrates but their use of absolute or relative numerosity has no...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2019.0138
更新日期:2019-06-28 00:00:00
abstract::Eavesdropping on communication is widespread among animals, e.g. bystanders observing male-male contests, female mate choice copying and predator detection of prey cues. Some animals also exhibit signal matching, e.g. overlapping of competitors' acoustic signals in aggressive interactions. Fewer studies have examined ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2011.1096
更新日期:2012-06-23 00:00:00
abstract::Spatial and temporal heterogeneity in relative fitness of competing species is a key factor affecting the structure of communities. However, it is not intuitive why species that are ecologically similar should differ in their response to environmental changes. Here we show that two sympatric flycatchers differ in repr...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2004.0265
更新日期:2005-03-22 00:00:00
abstract::Recent studies have emphasized the ability to reconstruct genome sizes (C-values) of extinct organisms such as dinosaurs, using correlations between known genome sizes and bone cell (osteocyte lacunae) volumes. Because of the established positive relationship between cell size and genome size in extant vertebrates, os...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2011.0173
更新日期:2011-10-23 00:00:00
abstract::We tested whether the carbohydrate and amino acid content of extrafloral nectar affected prey choice by a predatory ant. Fire ants, Solenopsis invicta, were provided with artificial nectar that varied in the presence of carbohydrates and amino acids and were then provided with two prey items that differed in nutrition...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2009.0736
更新日期:2010-04-23 00:00:00
abstract::Loss of Arctic sea ice owing to climate change is the primary threat to polar bears throughout their range. We evaluated the potential response of polar bears to sea-ice declines by (i) calculating generation length (GL) for the species, which determines the timeframe for conservation assessments; (ii) developing a st...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2016.0556
更新日期:2016-12-01 00:00:00
abstract::While it is widely acknowledged that forest biodiversity contributes to climate change mitigation through improved carbon sequestration, conversely how climate affects tree species diversity-forest productivity relationships is still poorly understood. We combined the results of long-term experiments where forest mixt...
journal_title:Biology letters
pub_type: 杂志文章,meta分析
doi:10.1098/rsbl.2017.0747
更新日期:2018-04-01 00:00:00
abstract::Intraguild predation (IGP) is common in communities, yet theory suggests it should not often persist and coexistence of participating species should be rare. As parasitism can play keystone roles in interactions between competitors, and between predators and prey, here we examine the role of parasites in maintaining I...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0178
更新日期:2008-10-23 00:00:00