Abstract:
:Male bottlenose dolphins in Shark Bay, Western Australia form two levels of alliances; two to three males cooperate to herd individual females and teams of greater than three males compete with other groups for females. Previous observation suggested two alliance tactics: small four to six member teams of relatives that formed stable pairs or trios and unrelated males in a large 14-member second-order alliance that had labile trio formation. Here, we present evidence for a third level of alliance formation, a continuum of second-order alliance sizes and no relationship between first-order alliance stability and second-order alliance size. These findings challenge the 'two alliance tactics' hypothesis and add to the evidence that Shark Bay male bottlenose dolphins engage in alliance formation that likely places considerable demands on their social cognition.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Connor RC,Watson-Capps JJ,Sherwin WB,Krützen Mdoi
10.1098/rsbl.2010.0852subject
Has Abstractpub_date
2011-08-23 00:00:00pages
623-6issue
4eissn
1744-9561issn
1744-957Xpii
rsbl.2010.0852journal_volume
7pub_type
杂志文章相关文献
Biology Letters文献大全abstract::Unrelated same-sex individuals pairing together and cooperating to raise offspring over many years is a rare occurrence in the animal kingdom. Cooperative breeding, in which animals help raise offspring that are not their own, is often attributed to kin selection when individuals are related, or altruism when individu...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0191
更新日期:2008-08-23 00:00:00
abstract::When populations are exposed to novel conditions of growth, they often become adapted to a similar extent, and at the same time, evolve some degree of impairment in their original environment. They may also come to vary widely with respect to characters which are uncorrelated with fitness, as the result of chance gene...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2013.0215
更新日期:2013-05-22 00:00:00
abstract::Bees are model organisms for the study of learning and memory, yet nearly all such research to date has used a single reward, nectar. Many bees collect both nectar (carbohydrates) and pollen (protein) on a single foraging bout, sometimes from different plant species. We tested whether individual bumblebees could learn...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2015.0628
更新日期:2015-09-01 00:00:00
abstract::Recurrent cycles of climatic change during the Quaternary period have dramatically affected the population genetic structure of many species. We reconstruct the recent demographic history of the coyote (Canis latrans) through the use of Bayesian techniques to examine the effects of Late Quaternary climatic perturbatio...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0162
更新日期:2012-08-23 00:00:00
abstract::Humans shift their attention to follow another person's gaze direction, a phenomenon called gaze cueing. This study examined whether a particular social factor, intergroup threat, modulates gaze cueing. As expected, stronger responses of a particular in-group to a threatening out-group were observed when the in-group,...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2014.1055
更新日期:2015-02-01 00:00:00
abstract::Ecosystem dynamics are driven by both biotic and abiotic processes, and perturbations can push ecosystems into novel dynamical regimes. Plant-plant, plant-soil and mycorrhizal associations all affect plant ecosystem dynamics; however, the direction and magnitude of these effects vary by context and their contribution ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2019.0441
更新日期:2020-01-01 00:00:00
abstract::Soil oxygen availability may influence blue carbon, which is carbon stored in coastal wetlands, by controlling the decomposition of soil organic matter. We are beginning to quantify soil oxygen availability in wetlands, but we lack a precise understanding of how oxygen controls soil carbon dynamics. In this paper, we ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0407
更新日期:2019-01-31 00:00:00
abstract::Near Eastern Neolithic farmers introduced several species of domestic plants and animals as they dispersed into Europe. Dogs were the only domestic species present in both Europe and the Near East prior to the Neolithic. Here, we assessed whether early Near Eastern dogs possessed a unique mitochondrial lineage that di...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0286
更新日期:2018-10-17 00:00:00
abstract::Nectar concentration is assumed to remain constant during transport by honeybees between flowers and hive. We sampled crop contents of nectar foragers on Aloe greatheadii var. davyana, a major winter bee plant in South Africa. The nectar is dilute (approx. 20% w/w), but the crop contents of bees captured on flowers ar...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0034
更新日期:2008-06-23 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::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::Ocean acidification (OA) poses a major threat to marine ecosystems globally, having significant ecological and economic importance. The number and complexity of experiments examining the effects of OA has substantially increased over the past decade, in an attempt to address multi-stressor interactions and long-term r...
journal_title:Biology letters
pub_type: 杂志文章,评审
doi:10.1098/rsbl.2016.0761
更新日期:2017-02-01 00:00:00
abstract::The workshop 'Species distribution models: applications, challenges and perspectives' held at Belo Horizonte (Brazil), 29-30 August 2011, aimed to review the state-of-the-art in species distribution modelling (SDM) in the neotropical realm. It brought together researchers in ecology, evolution, biogeography and conser...
journal_title:Biology letters
pub_type:
doi:10.1098/rsbl.2011.0942
更新日期:2012-06-23 00:00:00
abstract::Costs associated with extra-territorial movement are believed to have favoured the evolution of delayed dispersal and sociality across a range of social vertebrates, but remain surprisingly poorly understood. Here we reveal a novel mechanism that may contribute substantially to the costs of extra-territorial movement:...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2009.0032
更新日期:2009-08-23 00:00:00
abstract::In cooperatively breeding species, social conflict is typically assumed to underlie destructive behaviours like infanticide. However, an untested alternative hypothesis in birds is that infanticide in the form of egg tossing may simply be a parental response to partial nest predation representing a life-history trade-...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2019.0314
更新日期:2019-08-30 00:00:00
abstract::Although the presence of feathers in the nest is widespread among birds, it has not been previously suggested that feathers can be used as sexual signals. Females of the spotless starling (Sturnus unicolor) regularly carry feathers to their nest, mostly during laying and incubation. We show that the arrangement of the...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2005.0329
更新日期:2005-09-22 00:00:00
abstract::Facial width-to-height ratio (fWHR) is associated with social dominance in human and non-human primates, which may reflect the effects of testosterone on facial morphology and behaviour. Given that testosterone facilitates status-seeking motivation, the association between fWHR and behaviour should be contingent on th...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2019.0232
更新日期:2019-08-30 00:00:00
abstract::At the end of May, 17 scientists involved in an EU COST Action on Conservation Physiology of Marine Fishes met in Oristano, Sardinia, to discuss how physiology can be better used in modelling tools to aid in management of marine ecosystems. Current modelling approaches incorporate physiology to different extents, rang...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0609
更新日期:2012-12-23 00:00:00
abstract::In cooperative animal societies, dominant females typically show higher breeding success than subordinates, and are commonly believed to control the extent of reproductive sharing. However, studies of social insect societies reveal that subordinates too can interfere with the breeding attempts of others, with importan...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2006.0463
更新日期:2006-09-22 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::Since its discovery in the winter of 2005-2006, white-nose syndrome (WNS) has killed over one million little brown bats (Myotis lucifugus) in the American northeast. Although many studies have reported die-offs of bats at winter hibernacula, it is important to understand how bat mortality linked to WNS at winter hiber...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0859
更新日期:2011-06-23 00:00:00
abstract::Domesticated animals have been shown to recognize basic phonemic information from human speech sounds and to recognize familiar speakers from their voices. However, whether animals can spontaneously identify words across unfamiliar speakers (speaker normalization) or spontaneously discriminate between unfamiliar speak...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2019.0555
更新日期:2019-12-24 00:00:00
abstract::The difference between maximum metabolic rate and standard metabolic rate is referred to as aerobic scope, and because it constrains performance it is suggested to constitute a key limiting process prescribing how fish may cope with or adapt to climate warming. We use an evolutionary bioenergetics model for Atlantic c...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2014.1032
更新日期:2015-02-01 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
pub_type: 杂志文章
doi:10.1098/rsbl.2020.0809
更新日期:2021-01-01 00:00:00
abstract::The major histocompatibility complex (MHC) plays a key role in vertebrate immunity, and pathogen-mediated selection often favours certain allelic combinations. Assessing potential mates' MHC profiles may provide receivers with genetic benefits (identifying MHC-compatible mates and producing optimally diverse offspring...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2017.0430
更新日期:2017-11-01 00:00:00
abstract::Inbreeding causes increases in homozygosity and is commonly associated with reductions in fertility and embryogenesis. Although the mechanisms underlying such effects are unknown, recent work has suggested that inbred males may suffer impaired ejaculate quality, thus providing a functional explanation for reductions i...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0734
更新日期:2009-06-23 00:00:00
abstract::General models of plant vascular architecture, based on scaling of pipe diameters to remove the length dependence of hydraulic resistance within the xylem, have attracted strong interest. However, these models have neglected to consider the leaf, an important hydraulic component; they assume all leaves to have similar...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0094
更新日期:2008-06-23 00:00:00
abstract::Environmental reservoirs of zooxanthellae are essential for coral larvae settlement; understanding where they occur and how they are maintained is important for coral reef ecology. This study investigated the dispersal of Symbiodinium spp. by the stoplight parrotfish Sparisoma viride, which had high mean densities of ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2011.0836
更新日期:2012-04-23 00:00:00
abstract::Hunter-gatherer Pygmies from Central Africa are described as being extremely mobile. Using neutral genetic markers and population genetics theory, we explored the dispersal behaviour of the Baka Pygmies from Cameroon, one of the largest Pygmy populations in Central Africa. We found a strong correlation between genetic...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0192
更新日期:2010-12-23 00:00:00
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