Abstract:
:Sanderlings (Calidris alba) are long-distance migratory shorebirds with a non-breeding range that spans temperate and tropical coastal habitats. Breeding in the High Arctic combined with non-breeding seasons in the tropics necessitate long migrations, which are energetically demanding. On an annual basis, the higher energy expenditures during migration might pay off if food availability in the tropics is higher than at temperate latitudes. We compared foraging behaviour of birds at a north temperate and a tropical non-breeding site in the Netherlands and Ghana, respectively. In both cases the birds used similar habitats (open beaches), and experienced similar periods of daylight, which enabled us to compare food abundance and availability, and behavioural time budgets and food intake. During the non-breeding season, Sanderlings in the Netherlands spent 79% of their day foraging; in Ghana birds spent only 38% of the daytime period foraging and the largest proportion of their time resting (58%). The main prey item in the Netherlands was the soft-bodied polychaete Scolelepis squamata, while Sanderlings in Ghana fed almost exclusively on the bivalve Donax pulchellus, which they swallowed whole and crushed internally. Average availability of polychaete worms in the Netherlands was 7.4 g ash free dry mass (AFDM) m(-2), which was one tenth of the 77.1 g AFDM m(-2) estimated for the beach in Ghana. In the tropical environment of Ghana the Sanderlings combined relatively low energy requirements with high prey intake rates (1.64 mg opposed to 0.13 mg AFDM s(-1) for Ghana and the Netherlands respectively). Although this may suggest that the Ghana beaches are the most favourable environment, processing the hard-shelled bivalve (D. pulchellus) which is the staple food could be costly. The large amount of daytime spent resting in Ghana may be indicative of the time needed to process the shell fragments, rather than indicate rest.
journal_name
PeerJjournal_title
PeerJauthors
Grond K,Ntiamoa-Baidu Y,Piersma T,Reneerkens Jdoi
10.7717/peerj.1125subject
Has Abstractpub_date
2015-08-11 00:00:00pages
e1125issn
2167-8359pii
1125journal_volume
3pub_type
杂志文章相关文献
PeerJ文献大全abstract::Pancreatic adenocarcinoma (PAAD), the most common subtype of pancreatic cancer, is a highly lethal disease. In this study, we integrated the expression profiles of splicing factors (SFs) of PAAD from RNA-sequencing data to provide a comprehensive view of the clinical significance of SFs. A prognostic index (PI) based ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8380
更新日期:2020-02-11 00:00:00
abstract:Background:It was well known that age has an impact on word processing (word frequency or predictability) in terms of fixating time during reading. However, little is known about whether or not age modulates these impacts on saccade behaviors in Chinese reading (i.e., length of incoming/outgoing saccades for a target w...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8860
更新日期:2020-04-01 00:00:00
abstract::Annually, half of all plant-derived carbon is added to soil where it is microbially respired to CO2. However, understanding of the microbiology of this process is limited because most culture-independent methods cannot link metabolic processes to the organisms present, and this link to causative agents is necessary to...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2687
更新日期:2016-11-08 00:00:00
abstract::Niche production is intended to produce premium pork, but several husbandry factors may affect the meat fatty acid composition and aroma. Fatty acid profile (by GC-FID) of raw meat and volatile compounds (by SPME-GC-MS) of cooked meat were analysed in loin samples from two pig genetic types-75% Duroc (Du) and 50% Piet...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7322
更新日期:2019-07-17 00:00:00
abstract::Arbutin (p-hydroxyphenyl-β-D-glucopyranoside), a well-known tyrosinase inhibitor, has been widely used as a cosmetic whitening agent. Although its natural role is to scavenge free radicals within cells, it has also exhibited useful activities for the treatment of diuresis, bacterial infections and cancer, as well as a...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4170
更新日期:2017-12-20 00:00:00
abstract::Protoporphyrin (PP) and biliverdin (BV) give rise to the enormous diversity in avian egg coloration. Egg color serves several ecological purposes, including post-mating signaling and camouflage. Egg camouflage represents a major character of open-nesting birds which accomplish protection of their unhatched offspring a...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3706
更新日期:2017-08-29 00:00:00
abstract:BACKGROUND:Amoebiasis is the third most common parasitic cause of morbidity and mortality, particularly in countries with poor hygienic settings. There exists an ambiguity in the diagnosis of amoebiasis, and hence there arises a necessity for a better diagnostic approach. Serine-rich Entamoeba histolyticaprotein (SREHP...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3160
更新日期:2017-06-28 00:00:00
abstract::Barona arcuata, n.gen et n.sp., a left forewing of a relatively large cockroach of the Order Blattaria, is described from mesosaur-bearing lagoonal shales of the Mangrullo Formation (north-eastern Uruguay). While most of the insect remains recovered from the Mangrullo Formation come from sandy limestones, associated t...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6289
更新日期:2019-01-18 00:00:00
abstract::The study of material collected during routine monitoring surveys dealing with oil extraction and aquaculture in waters off Myanmar (North Andaman Sea) and in the Gulf of Thailand, respectively, allowed us to analyse the taxonomy and diversity of the polychaete genus Terebellides (Annelida). Three species were found, ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2313
更新日期:2016-08-16 00:00:00
abstract::Antibiotic resistance in our pathogens is medicine's climate change: caused by human activity, and resulting in more extreme outcomes. Resistance emerges in microbial populations when antibiotics act on phenotypic variance within the population. This can arise from either genotypic diversity (resulting from a mutation...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5801
更新日期:2018-10-12 00:00:00
abstract:Background:Stoichiometric relations drive powerful constraints in several fundamental ecosystem processes. However, limited studies have been conducted on the ecological stoichiometry of plants after the change of community composition induced by Stellera chamaejasme removal in alpine grassland in the Qinghai-Tibetan P...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9239
更新日期:2020-06-23 00:00:00
abstract::Gammaherpesviruses (GHVs) are host specific DNA viruses that infect a large range of mammalian species. These viruses preferentially target host lymphocyte cell populations and infection may lead to morbidity or mortality in immunocompromised, co-infected, or non-adapted hosts. In this study, we tested for the presenc...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4982
更新日期:2018-06-22 00:00:00
abstract::This study examined whether being aware of the repetition of stimuli in a simple numerosity task could aid the development of automaticity. The numerosity task used in this study was a simple counting task. Thirty-four participants were divided into two groups. One group was instructed that the stimuli would repeat ma...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4329
更新日期:2018-01-31 00:00:00
abstract::Management of low-mobility or benthic fisheries is a difficult task because variation in the spatial distribution and population dynamics of the resources make the monitoring and assessment of these fisheries challenging. We assumed that environmental, spatial, and temporal factors can contribute to the variability of...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7278
更新日期:2019-07-08 00:00:00
abstract::Although many ecologists focus on the relationship between species richness (S) and evenness (E), conflicts between observation and theory are difficult to reconcile. Empirical S-E relationships were not consistent, while relationships show strong correlation between S and E. Since E essentially depended on the relati...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4951
更新日期:2018-06-12 00:00:00
abstract::Stridulatory signals are involved in conspecific interactions between bark beetles (Coleoptera: Curculionidae, Scolytinae). In this study, we compared the qualitative profiles of acoustic signals in three species from the genus Polygraphus Er. Sympatry can be periodically observed in two of them -P. proximus and P. su...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8281
更新日期:2020-01-02 00:00:00
abstract::The enhanced ability to direct sexual reproduction may lead to improved restoration outcomes for Acropora cervicornis. Gravid fragments of A. cervicornis were maintained in a laboratory for two sequential trials in the seven days prior to natural spawning in the Florida Keys. Ten replicates of five chemicals known to ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1982
更新日期:2016-04-26 00:00:00
abstract::A previous study found that use of the traditional halibut hook (čibu.d) of the Makah Tribe in present day recreational Pacific halibut (Hippoglossus stenolepis) fisheries significantly reduced bycatch compared to paired 8/0 circle hooks. The study also found that the čibu.d had a significantly reduced catch of halibu...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9288
更新日期:2020-06-12 00:00:00
abstract::According to the intelligence-creativity threshold hypothesis, there should be a positive association between intelligence and creative potential up to a certain point, the threshold, after which a further increase in intelligence should have no association with creativity. In the present simulation study, the measure...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7891
更新日期:2019-10-21 00:00:00
abstract::The most intense commercial harvest of marine aquarium species in North America occurs in the coastal waters surrounding Florida, yet very often little information exists on the life histories, population dynamics, or reproductive characteristics of these organisms. The peppermint shrimp Lysmata boggessi is one such s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8231
更新日期:2020-01-23 00:00:00
abstract::Apis cerana cerana relies on its sensitive olfactory system to perform foraging activities in the surrounding environment. Olfactory receptors (ORs) are a primary requirement for odorant recognition and coding. However, the molecular recognition of volatile compounds with ORs in A. cerana cerana is still not clear. He...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5005
更新日期:2018-06-11 00:00:00
abstract::Substantial evidence has shown that most exogenous substances are metabolized by multiple cytochrome P450 (P450) enzymes instead of by merely one P450 isoform. Thus, multi-P450 inhibition leads to greater drug-drug interaction risk than specific P450 inhibition. Herein, we innovatively established an artificial neural...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1524
更新日期:2015-12-21 00:00:00
abstract::Footprint morphology (e.g., outline shape, depth of impression) is one of the key diagnostic features used in the interpretation of ancient vertebrate tracks. Over 80 tridactyl tracks, confined to the same bedding surface in the Lower Jurassic Elliot Formation at Mafube (eastern Free State, South Africa), show large s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2285
更新日期:2016-08-23 00:00:00
abstract:Background:Acute respiratory distress syndrome (ARDS) is associated with significantly increased risk of death, and early risk stratification may help to choose the appropriate treatment. The study aimed to develop a neural network model by using a genetic algorithm (GA) for the prediction of mortality in patients with...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7719
更新日期:2019-09-16 00:00:00
abstract::Background. In recent years, there has been an explosion in the number of technical and medical diagnostic platforms being developed. This has greatly improved our ability to more accurately, and more comprehensively, explore and characterize human biological systems on the individual level. Large quantities of biomed...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.177
更新日期:2013-10-03 00:00:00
abstract::Although the existence of coral-reef habitats at depths to 165 m in tropical regions has been known for decades, the richness, diversity, and ecological importance of mesophotic coral ecosystems (MCEs) has only recently become widely acknowledged. During an interdisciplinary effort spanning more than two decades, we c...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2475
更新日期:2016-10-04 00:00:00
abstract:Context:Systemic lupus erythematosus (SLE) is a chronic inflammatory autoimmune disease with unknown etiology. Objective:Human plasma is comprised of over 10 orders of magnitude concentration of proteins and tissue leakages. The changes in the abundance of these proteins have played an important role in various human ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4730
更新日期:2018-05-08 00:00:00
abstract::Here we present the first two complete plastid genomes for Brunelliaceae, a Neotropical family with a single genus, Brunellia. We surveyed the entire plastid genome in order to find variable cpDNA regions for further phylogenetic analyses across the family. We sampled morphologically different species, B. antioquensis...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8392
更新日期:2020-01-28 00:00:00
abstract::The use of baited remote underwater video (BRUV) for examining and monitoring marine biodiversity in temperate marine environments is rapidly growing, however many aspects of their effectiveness relies on assumptions based on studies from the Southern Hemisphere. The addition of bait to underwater camera systems acts ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9744
更新日期:2020-08-27 00:00:00
abstract:Background and Purpose:Several studies have proposed that the advanced lung cancer inflammation index (ALI), a new inflammation-related index, can be used for the prognosis assessment of various malignancies. However, few studies have reported its prognostic value in colorectal cancer (CRC). Therefore, this study explo...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.10100
更新日期:2020-10-08 00:00:00