Automated identification of social interaction criteria in Drosophila melanogaster.

abstract：:Seasonal changes in stress steroid hormone secretions are thought to reflect investment in self-maintenance versus reproduction. The capricious conditions hypothesis (CCH) posits that reduced corticosterone (CORT) secretion during stress coincident with parental phases of breeding is necessary in harsh environments be...

journal_title：Biology letters

authors： Cornelius JM,Breuner CW,Hahn TP

更新日期：2012-04-23 00:00:00

abstract：:This study tests the hypothesis that vertical habitat preferences of different monkey species inhabiting closed canopy rainforest are reflected in oxygen isotopes. We sampled bone from seven sympatric cercopithecid species in the Taï forest, Côte d'Ivoire, where long-term study has established taxon-specific patterns ...

journal_title：Biology letters

authors： Krigbaum J,Berger MH,Daegling DJ,McGraw WS

更新日期：2013-07-10 00:00:00

abstract：:It is well established that grooming underpins sociality in group-living primates, and a number of studies have documented the stress-reducing effects of being groomed. In this study, we quantified grooming behaviour and physiological stress (assessed by faecal glucocorticoid analysis) in free-ranging Barbary macaques...

journal_title：Biology letters

authors： Shutt K,MacLarnon A,Heistermann M,Semple S

更新日期：2007-06-22 00:00:00

abstract：:Telomeres are sensitive to damage induced by oxidative stress, and thus it is expected that dietary antioxidants may support the maintenance of telomere length in animals, particularly those with a fast rate of life (e.g. fast metabolism, activity and growth). We tested experimentally the effect of antioxidant supplem...

journal_title：Biology letters

authors： Kim SY,Velando A

更新日期：2015-05-01 00:00:00

abstract：:In social insects, group behaviour can increase disease resistance among nest-mates and generate social prophylaxis. Stomodeal trophallaxis, or mutual feeding through regurgitation, may boost colony-level immunocompetence. We provide evidence for increased trophallactic behaviour among immunized workers of the carpent...

journal_title：Biology letters

authors： Hamilton C,Lejeune BT,Rosengaus RB

更新日期：2011-02-23 00:00:00

abstract：:Strong reciprocity, whereby cooperators punish non-cooperators, may help to explain the evolutionary success of cooperative behaviours. However, theory suggests that selection for strong reciprocity can depend upon tight genetic linkage between cooperation and punishment, to avoid the strategy being outcompeted by non...

journal_title：Biology letters

authors： Inglis RF,West S,Buckling A

更新日期：2014-02-05 00:00:00

abstract：:If a mother's nutritional status predicts the nutritional environment of the offspring, it would be adaptive for mothers experiencing nutritional stress to prime their offspring for a better tolerance to poor nutrition. We report that in Drosophila melanogaster, parents raised on poor larval food laid 3-6% heavier egg...

journal_title：Biology letters

authors： Vijendravarma RK,Narasimha S,Kawecki TJ

更新日期：2010-04-23 00:00:00

abstract：:Mountainous areas contain a substantial part of the world species richness, but the evolutionary origins and diversification of this biodiversity remain elusive. Diversification may result from differences in clade age (longer time to diversify), net diversification rates (faster speciation rate) or carrying capacitie...

journal_title：Biology letters

authors： Condamine FL

更新日期：2018-03-01 00:00:00

abstract：:The associations between habitat and other factors that lead to the risk of bovine tuberculosis (bTB) in diary cattle were examined in an unmatched case-control study. Data from 60 herds with recent history of bTB and 60 controls were analysed using logistic regression. The predictors included farmland habitat, topogr...

journal_title：Biology letters

authors： Mathews F,Lovett L,Rushton S,Macdonald DW

更新日期：2006-06-22 00:00:00

abstract：:Most large raptors on migration avoid crossing the sea because of the lack of atmospheric convection over temperate seas. The osprey Pandion haliaetus is an exception among raptors, since it can fly over several hundred kilometres of open water. We equipped five juvenile ospreys with GPS-Accelerometer-Magnetometer log...

journal_title：Biology letters

authors： Duriez O,Peron G,Gremillet D,Sforzi A,Monti F

更新日期：2018-12-21 00:00:00

abstract：:Domestic dogs have been recognized for their social sensitivity and aptitude in human-guided tasks. For example, prior studies have demonstrated that dogs look to humans when confronted with an unsolvable task; an action often interpreted as soliciting necessary help. Conversely, wolves persist on such tasks. While do...

journal_title：Biology letters

authors： Udell MA

更新日期：2015-09-01 00:00:00

abstract：:The harlequin ladybird, Harmonia axyridis, has emerged as a model species for invasion biology, reflecting its remarkable capacity to outcompete native ladybird species when introduced into new habitats. This ability may be associated with its prominent resistance to pathogens and intraguild predation. We recently sho...

journal_title：Biology letters

authors： Schmidtberg H,Röhrich C,Vogel H,Vilcinskas A

更新日期：2013-03-06 00:00:00

abstract：:The temporal stability of plant reproductive features on islands has rarely been tested. Using flowers, fruits/cones and seeds from a well-dated (23 Ma) Miocene Lagerstätte in New Zealand, we show that across 23 families and 30 genera of forest angiosperms and conifers, reproductive features have remained constant for...

journal_title：Biology letters

authors： Conran JG,Lee WG,Lee DE,Bannister JM,Kaulfuss U

更新日期：2014-10-01 00:00:00

abstract：:Vocal learning in birds is typically restricted to a sensitive period early in life, with the few exceptions reported in songbirds and parrots. Here, we present evidence of open-ended vocal learning in a hummingbird, the third avian group with vocal learning. We studied vocalizations at four leks of the long-billed he...

journal_title：Biology letters

authors： Araya-Salas M,Wright T

更新日期：2013-09-25 00:00:00

abstract：:There is increasing evidence from non-human animals that males adjust their ejaculate expenditure according to the risk of sperm competition. In this study we show that, after controlling for lifestyle factors known to influence semen quality, human males viewing images depicting sperm competition had a higher percent...

journal_title：Biology letters

authors： Kilgallon SJ,Simmons LW

更新日期：2005-09-22 00:00:00

abstract：:Many studies have focused on the effects of anthropogenic noise on animal communication, but only a few have looked at its effect on other behavioural systems. We designed a playback experiment to test the effect of noise on predation risk assessment. We found that in response to boat motor playback, Caribbean hermit ...

journal_title：Biology letters

authors： Chan AA,Giraldo-Perez P,Smith S,Blumstein DT

更新日期：2010-08-23 00:00:00

abstract：:Male insects rarely collaborate with each other, but pollinator fig wasps (Hymenoptera: Agaonidae) are said to be an exception. Immature fig wasps feed on galled ovules located inside figs, the inflorescences of Ficus species (Moraceae). After mating, adult pollinator males chew communal exit-holes that allow mated fe...

journal_title：Biology letters

authors： Suleman N,Raja S,Compton SG

更新日期：2012-06-23 00:00:00

abstract：:Worldwide, many plant species are experiencing an earlier onset of spring phenophases due to climate warming. Rapid recent temperature increases on the Tibetan Plateau (TP) have triggered changes in the spring phenology of the local vegetation. However, remote sensing studies of the land surface phenology have reached...

journal_title：Biology letters

authors： Zhou HK,Yao BQ,Xu WX,Ye X,Fu JJ,Jin YX,Zhao XQ

更新日期：2014-08-01 00:00:00

abstract：:The somasteroids are Lower Palaeozoic star-shaped animals widely regarded as ancestors of Asterozoa, the group of echinoderms that includes brittle stars and starfish. However, the origin of asterozoans, the assembly of their distinctive body organization, and their relationships with other Cambrian and Ordovician ech...

journal_title：Biology letters

authors： Hunter AW,Ortega-Hernández J

更新日期：2021-01-01 00:00:00

abstract：:Research on social behaviour has largely concentrated on birds and mammals in visually active, cooperatively breeding groups (although such systems are relatively rare) and focused much less on species that rarely interact other than for mating and parental care. We used microsatellite markers to characterize relatedn...

journal_title：Biology letters

authors： Clark RW,Brown WS,Stechert R,Greene HW

更新日期：2012-08-23 00:00:00

abstract：:Given the high costs of avian obligate brood parasitism, host individuals are selected to reject parasitic eggs they recognize as foreign. We show that rejection may not necessarily follow egg discrimination when selective removal of the parasitic egg is difficult. We studied egg rejection behaviour in a small host of...

journal_title：Biology letters

authors： Antonov A,Stokke BG,Moksnes A,Røskaft E

更新日期：2009-04-23 00:00:00

abstract：:The Tasmanian devil (Sarcophilus harrisii) was widespread in Australia during the Late Pleistocene but is now endemic to the island of Tasmania. Low genetic diversity combined with the spread of devil facial tumour disease have raised concerns for the species' long-term survival. Here, we investigate the origin of low...

journal_title：Biology letters

authors： Brüniche-Olsen A,Jones ME,Austin JJ,Burridge CP,Holland BR

更新日期：2014-11-01 00:00:00

abstract：:Most songbirds learn their songs from adult tutors, who can be their father or other male conspecifics. However, the variables that control song learning in a natural social context are largely unknown. We investigated whether the time of hatching of male domesticated canaries has an impact on their song development a...

journal_title：Biology letters

authors： Leitner S,Teichel J,Ter Maat A,Voigt C

更新日期：2015-08-01 00:00:00

abstract：:During the course of a telemetry study on three species of Australian frogs (Litoria caerulea, Litoria dahlii and Cyclorana australis), we found that many of the surgically implanted transmitters had migrated into the bladder. We subsequently implanted small beads into L. caerulea and they were expelled from the body ...

journal_title：Biology letters

authors： Tracy CR,Christian KA,McArthur LJ,Gienger CM

更新日期：2011-06-23 00:00:00

abstract：:The brown alga Fucus serratus is a key foundation species on rocky intertidal shores of northern Europe. We sampled the same population off the coast of southern Norway in 2000 and 2008, and using 26 microsatellite loci, we estimated the changes in genetic diversity and effective population size (Ne). The unexpectedly...

journal_title：Biology letters

authors： Coyer JA,Hoarau G,Sjøtun K,Olsen JL

更新日期：2008-12-23 00:00:00

abstract：:The phenomenon of endocrine disruption is currently a source of growing concern. Feminization of male fish in UK rivers has been shown to occur extensively and has been linked with exposure to endocrine-disrupting compounds present in the environment. Much less is known of the extent and scale of endocrine disruption ...

journal_title：Biology letters

authors： Chesman BS,Langston WJ

更新日期：2006-09-22 00:00:00

abstract：:Adaptive divergence may be facilitated if morphological and behavioural traits associated with local adaptation share the same genetic basis. It is therefore important to determine whether genes underlying adaptive morphological traits are associated with variation in behaviour in natural populations. Positive selecti...

journal_title：Biology letters

authors： Barrett RD,Vines TH,Bystriansky JS,Schulte PM

更新日期：2009-12-23 00:00:00

abstract：:Postzygotic isolation may be important for maintaining species boundaries, particularly when premating barriers are incomplete. Little is known about the course of events leading from minor environmental mismatches affecting hybrid fitness to severe genetic incompatibilities causing sterility or inviability. We invest...

journal_title：Biology letters

authors： Alund M,Immler S,Rice AM,Qvarnström A

更新日期：2013-04-10 00:00:00

abstract：:In this study, we focused on the exceptionally large mammals inhabiting the Americas during the Quaternary period and the paramount role of body size in species ecology. We evaluated two main features of Pleistocene food webs: the relationship between body size and (i) trophic position and (ii) vulnerability to predat...

journal_title：Biology letters

authors： Segura AM,Fariña RA,Arim M

更新日期：2016-05-01 00:00:00

abstract：:Marsupial frogs have a unique reproductive mode in which females carry eggs enclosed in a sealed dorsal brood pouch. While most anurans are considered to be oviparous with lecithotrophic eggs, the extensively vascularized membrane of the brood pouch in marsupial frogs suggests potential opportunities for nutrient tran...

journal_title：Biology letters

authors： Warne RW,Catenazzi A

更新日期：2016-10-01 00:00:00