| susceptibility of avian hosts to experimental gymnophalloides seoi infection. | to determine whether avian species are susceptible to infection with gymnophalloides seoi (a human-infecting intestinal trematode), we exposed 7 species of birds with metacercariae obtained from oysters. the birds were necropsied at days 2, 4, and 6 postinfection (pi). the highest worm recovery at day 6 pi was obtained from the kentish plover (charadrius alexandrinus; mean = 56.0%), followed by the mongolian plover (c. mongolus; 49.3%), and the grey plover (pluvialis squatarola; 32.3%). in contr ... | 2001 | 11318587 |
| [sequence variation of mitochondrial cytochrome b gene and phylogenetic relationships among twelve species of charadriiformes]. | studies of the phylogenetic relationships of the charadriiformes have been largely based on conservative morphological characters. during the past 10 years, many studies on the evolutionary biology of birds adopted phylogenetic information obtained from mitochondrial dna, but few work on the charadriiformes has been reported to date. therefore, phylogenetic relationships and classification of the charadriiformes remains controversial. in this study, we try to shed light on these relationships vi ... | 2003 | 12924155 |
| heterozygosity-fitness correlations of conserved microsatellite markers in kentish plovers charadrius alexandrinus. | heterozygosity-fitness correlations (hfcs) are frequently used to examine the relationship between genetic diversity and fitness. most studies have reported positive hfcs, although there is a strong bias towards investigating hfcs in genetically impoverished populations. we investigated hfcs in a large genetically diverse breeding population of kentish plovers charadrius alexandrinus in southern turkey. this small shorebird exhibits highly variable mating and care systems, and it is becoming an ... | 2010 | 21044191 |
| the first set of universal nuclear protein-coding loci markers for avian phylogenetic and population genetic studies. | multiple nuclear markers provide genetic polymorphism data for molecular systematics and population genetic studies. they are especially required for the coalescent-based analyses that can be used to accurately estimate species trees and infer population demographic histories. however, in avian evolutionary studies, these powerful coalescent-based methods are hindered by the lack of a sufficient number of markers. in this study, we designed pcr primers to amplify 136 nuclear protein-coding loci ... | 2018 | 30356056 |
| waterbirds (other than laridae) nesting in the middle section of laguna cuyutlán, colima, méxico. | laguna de cuyutlán, in the state of colima, mexico, is the only large coastal wetland in a span of roughly 1150 km. despite this, the study of its birds has been largely neglected. between 2003 and 2006 we assessed the waterbirds nesting in the middle portion of laguna cuyutlán, a large tropical coastal lagoon, through field visits. we documented the nesting of 15 species of non-laridae waterbirds: neotropic cormorant (phalacrocorax brasilianus), tricolored egret (egretta tricolor), snowy egret ... | 2008 | 18624252 |
| a review of gymnophalloides seoi (digenea: gymnophallidae) and human infections in the republic of korea. | studies on gymnophalloides seoi (digenea: gymnophallidae) and human infections are briefly reviewed. this minute intestinal fluke was first discovered from a korean woman suffering from acute pancreatitis and gastrointestinal troubles. it was described as a new species by lee, chai and hong in 1993. the southwestern coastal village where the patient resided was found to be a highly endemic area, and additional endemic areas have been identified. the parasite is very small, 0.33-0.50 mm long and ... | 2001 | 11441510 |
| incubating parents serve as visual cues to predators in kentish plover (charadrius alexandrinus). | ground-nesting birds face many challenges to reproduce successfully, with nest predation being the main cause of reproductive failure. visual predators such as corvids and egg-eating raptors, are among the most common causes of nest failure; thus, parental strategies that reduce the risk of visual nest predation should be favored by selection. to date, most research has focused on egg crypsis without considering adult crypsis, although in natural circumstances the eggs are covered by an incubati ... | 2020 | 32726365 |
| ecological constraints on breeding system evolution: the influence of habitat on brood desertion in kentish plover. | 1. one of the fundamental insights of behavioural ecology is that resources influence breeding systems. for instance, when food resources are plenty, one parent is able to care for the young on its own, so that the other parent can desert and became polygamous. we investigated this hypothesis in the context of classical polyandry when females may have several mates within a single breeding season, and parental duties are carried out largely by the male. 2. we studied a precocial wader, the kenti ... | 2006 | 16903063 |
| mercury exposure in sedentary and migratory charadrius plovers distributed widely across china. | mercury pollution is a global problem and of particular concern in high emissions areas, such as china. we studied the migratory kentish plover, charadrius alexandrinus, which breeds in coastal northern/central china and the inland qinghai lake, and the white-faced plover c. dealbatus, a year-round resident of coastal southern china. we measured total mercury (thg) concentrations in feather and blood samples of breeding females. we expected low levels at the remote qinghai lake, but we found ins ... | 2020 | 31828699 |
| association of insularity and body condition to cloacal bacteria prevalence in a small shorebird. | do islands harbour less diverse disease communities than mainland? the island biogeography theory predicts more diverse communities on mainland than on islands due to more niches, more diverse habitats and availability of greater range of hosts. we compared bacteria prevalences of campylobacter, chlamydia and salmonella in cloacal samples of a small shorebird, the kentish plover (charadrius alexandrinus) between two island populations of macaronesia and two mainland locations in the iberian peni ... | 2020 | 32804958 |
| the impact of social structure on breeding strategies in an island bird. | the social environment is a key factor determining fitness by influencing multiple stages of reproduction, including pair formation, mating behavior and parenting. however, the influence of social structure across different aspects of breeding is rarely examined simultaneously in wild populations. we therefore lack a consolidation of the mechanisms by which sociality impacts reproduction. here we investigate the implications of the social environment before and during breeding on multiple stages ... | 2020 | 32807811 |
| prolactin concentrations predict parental investment and nest survival in a free-living shorebird. | the hormonal milieu that exists during reproduction is one of the key factors influencing the trade-off between reproductive investment and self-maintenance. much previous work in birds has focused on prolactin as a physiological mediator since prolactin is involved in the onset and maintenance of parental care. however, how prolactin relates to reproductive success in terms of altering parental behavior in wild bird populations is not fully understood. here, we report prolactin concentrations i ... | 2020 | 31785284 |
| helminth parasites in six species of shorebirds (charadrii) from the coast of belize. | thirteen species of helminth parasites were recovered from six species of charadriid shorebirds (aves: charadriiformes) from belize: the ruddy turnstone, arenaria interpres, the snowy plover, charadrius alexandrinus, the semipalmated plover, c. semipalmatus, the killdeer, c. vociferus, the white-rumped sandpiper, calidris fuscicollis, and the black-bellied plover, pluvialis squatarola. cestode species were predominant (n = 8), followed by trematode species (n = 3) and acanthocephala (n = 2). the ... | 2001 | 11562710 |
| [three nadejdolepis spasskii & spasskaya, 1954 (cestoda: hymenolepididae) parasites of charadrii (aves) of belize]. | three nadejdolepis from belize, central america, represent new geographical records (1) nadejdolepis paranitidulans (golikova, 1959) (rostellar hooks 40-44 microm long) from charadrius alexandrinus; (2) n. arenariae (cabot, 1969) n. comb. (rostellar hooks 89 microm long) from arenaria interpres; and (3) n. litoralis (webster, 1947) (rostellar hooks 81-85 microm long) from calidris fuscicollis (new host record). additional descriptions, illustrations and information pertaining to these species ar ... | 2000 | 11071154 |
| persistence of an extreme male-biased adult sex ratio in a natural population of polyandrous bird. | in a number of insects, fishes and birds, the conventional sex roles are reversed: males are the main care provider, whereas females focus on matings. the reversal of typical sex roles is an evolutionary puzzle, because it challenges the foundations of sex roles, sexual selection and parental investment theory. recent theoretical models predict that biased parental care may be a response to biased adult sex ratios (asrs). however, estimating asr is challenging in natural populations, because mal ... | 2011 | 21749544 |
| triploid plover female provides support for a role of the w chromosome in avian sex determination. | two models, z dosage and dominant w, have been proposed to explain sex determination in birds, in which males are characterized by the presence of two z chromosomes, and females are hemizygous with a z and a w chromosome. according to the z dosage model, high dosage of a z-linked gene triggers male development, whereas the dominant w model postulates that a still unknown w-linked gene triggers female development. using 33 polymorphic microsatellite markers, we describe a female triploid kentish ... | 2012 | 22647929 |
| high gene flow on a continental scale in the polyandrous kentish plover charadrius alexandrinus. | gene flow promotes genetic homogeneity of species in time and space. gene flow can be modulated by sex-biased dispersal that links population genetics to mating systems. we investigated the phylogeography of the widely distributed kentish plover charadrius alexandrinus. this small shorebird has a large breeding range spanning from western europe to japan and exhibits an unusually flexible mating system with high female breeding dispersal. we analysed genetic structure and gene flow using a 427-b ... | 2012 | 23094674 |
| integrating spatial data and shorebird nesting locations to predict the potential future impact of global warming on coastal habitats: a case study on farasan islands, saudi arabia. | one of the expected effects of the global warming is changing coastal habitats by accelerating the rate of sea level rise. coastal habitats support large number of marine and wetland species including shorebirds (plovers, sandpipers and allies). in this study, we investigate how coastal habitats may be impacted by sea level rise in the farasan islands, kingdom of saudi arabia. we use kentish plover charadrius alexandrinus - a common coastal breeding shorebird - as an ecological model species to ... | 2012 | 23961191 |
| geographic variation in breeding system and environment predicts melanin-based plumage ornamentation of male and female kentish plovers. | sexual selection determines the elaboration of morphological and behavioural traits and thus drives the evolution of phenotypes. sexual selection on males and females can differ between populations, especially when populations exhibit different breeding systems. a substantial body of literature describes how breeding systems shape ornamentation across species, with a strong emphasis on male ornamentation and female preference. however, whether breeding system predicts ornamentation within specie ... | 2017 | 26766883 |
| ontogenic differences in sexual size dimorphism across four plover populations. | sexual size dimorphism (ssd) among adults is commonly observed in animals and is considered to be adaptive. however, the ontogenic emergence of ssd, i.e. the timing of divergence in body size between males and females, has only recently received attention. it is widely acknowledged that the ontogeny of ssd may differ between species, but it remains unclear how variable the ontogeny of ssd is within species. kentish plovers charadrius alexandrinus and snowy plovers c. nivosus are closely related ... | 2015 | 27499551 |
| demographic histories and genome-wide patterns of divergence in incipient species of shorebirds. | understanding how incipient species are maintained with gene flow is a fundamental question in evolutionary biology. whole genome sequencing of multiple individuals holds great potential to illustrate patterns of genomic differentiation as well as the associated evolutionary histories. kentish (charadrius alexandrinus) and the white-faced (c. dealbatus) plovers, which differ in their phenotype, ecology and behavior, are two incipient species and parapatrically distributed in east asia. previous ... | 2019 | 31781152 |
| does the use of nest materials in a ground-nesting bird result from a compromise between the risk of egg overheating and camouflage? | many studies addressing the use of nest materials by animals have focused on only one factor to explain its function. however, the consideration of more than one factor could explain the apparently maladaptive choice of nest materials that make nests conspicuous to predators. we experimentally tested whether there is a trade-off in the use of nest materials between the risks of egg predation versus protection from overheating. we studied the ground-nesting kentish plover, charadrius alexandrinus ... | 2019 | 31757805 |
| the mitochondrial genome of the kentish plover charadrius alexandrinus (charadriiformes: charadriidae) and phylogenetic analysis of charadrii. | the suborder charadrii (aves: charadriiformes), one of the most species-rich radiations within shorebirds, which contains good source for studies of ecology, behaviour and evolution. the resources of mitogenome have rapidly accumulated in recent years due to the advanced genomic sequencing, while suborder charadrii's mitogenome has not been well studied. the primary objective of this study was to determine the complete mitogenome sequence of charadrius alexandrinus, and investigated the evolutio ... | 2018 | 30155708 |
| genetic, phenotypic and ecological differentiation suggests incipient speciation in two charadrius plovers along the chinese coast. | speciation with gene flow is an alternative to the nascence of new taxa in strict allopatric separation. indeed, many taxa have parapatric distributions at present. it is often unclear if these are secondary contacts, e.g. caused by past glaciation cycles or the manifestation of speciation with gene flow, which hampers our understanding of how different forces drive diversification. here we studied genetic, phenotypic and ecological aspects of divergence in a pair of incipient shorebird species, ... | 2019 | 31248363 |
| brood desertion by female shorebirds: a test of the differential parental capacity hypothesis on kentish plovers. | the aim of this study was to examine whether the energetic costs of reproduction explain offspring desertion by female shorebirds, as is suggested by the differential parental capacity hypothesis. a prediction of the hypothesis is that, in species with biparental incubation in which females desert from brood care after hatching, the body condition of females should decline after laying to a point at which their body reserves are too low for continuing parental care. we tested this prediction on ... | 2000 | 11413629 |
| trade-off between mating opportunities and parental care: brood desertion by female kentish plovers. | why do some parents care for their young whereas others divorce from their mate and abandon their offspring? this decision is governed by the trade-off between the value of the current breeding event and future breeding prospects. in the precocial kentish plover charadrius alexandrinus females frequently, but not always, abandon their broods to be cared for by their mate, and seek new breeding partners within the same season. we have shown previously that females' remating opportunities decline ... | 2000 | 11416913 |
| conflict between genetic and phenotypic differentiation: the evolutionary history of a 'lost and rediscovered' shorebird. | understanding and resolving conflicts between phenotypic and genetic differentiation is central to evolutionary research. while phenotypically monomorphic species may exhibit deep genetic divergences, some morphologically distinct taxa lack notable genetic differentiation. here we conduct a molecular investigation of an enigmatic shorebird with a convoluted taxonomic history, the white-faced plover (charadrius alexandrinus dealbatus), widely regarded as a subspecies of the kentish plover (c. ale ... | 2011 | 22096515 |
| prolactin stress response does not predict brood desertion in a polyandrous shorebird. | one of the fundamental principles of the life-history theory is that parents need to balance their resources between current and future offspring. deserting the dependent young is a radical life-history decision that saves resources for future reproduction but that may cause the current brood to fail. despite the importance of desertion for reproductive success, and thus fitness, the neuroendocrine mechanisms of brood desertion are largely unknown. we investigated two candidate hormones that may ... | 2012 | 22504343 |
| the plover neurotranscriptome assembly: transcriptomic analysis in an ecological model species without a reference genome. | we assembled a de novo transcriptome of short-read illumina rna-seq data generated from telencephalon and diencephalon tissue samples from the kentish plover, charadrius alexandrinus. this is a species of considerable interest in behavioural ecology for its highly variable mating system and parental behaviour, but it lacks genomic resources and is evolutionarily distant from the few available avian draft genome sequences. we assembled and identified over 21,000 transcript contigs with significan ... | 2013 | 23551815 |
| local environment but not genetic differentiation influences biparental care in ten plover populations. | social behaviours are highly variable between species, populations and individuals. however, it is contentious whether behavioural variations are primarily moulded by the environment, caused by genetic differences, or a combination of both. here we establish that biparental care, a complex social behaviour that involves rearing of young by both parents, differs between closely related populations, and then test two potential sources of variation in parental behaviour between populations: ambient ... | 2013 | 23613768 |
| population divergence and gene flow in two east asian shorebirds on the verge of speciation. | genetic isolation of populations over evolutionary time leads to the formation of independent species. we examined a pair of shorebirds - the kentish plover charadrius alexandrinus and the enigmatic white-faced plover c. dealbatus - which display strong plumage differentiation, yet show minimal genetic divergence based on previous mitochondrial and microsatellite work. two scenarios may lead to this situation: (1) they represent clinal or poorly diverged populations with limited genomic differen ... | 2019 | 31189934 |
| accumulation of trace elements in feathers of the kentish plover charadrius alexandrinus. | a non-invasive study of trace element accumulation in tail feathers of the kentish plover (charadrius alexandrinus) was performed along the coastline of the northern littoral strip of the venice lagoon, with the aim to verify whether contamination may be a factor affecting conservation status of kentish plover populations. body burdens in feathers of 11 trace elements including toxic metals/metalloids and essential elements (as, cd, co, cr, cu, hg, ni, pb, se, v, zn) were quantified by icp-ms, t ... | 2019 | 31026751 |
| latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation. | solar radiation is an important driver of animal coloration, not only because of the effects of coloration on body temperature but also because coloration may protect from the deleterious effects of uv radiation. indeed, dark coloration may protect from uv, but may increase the risk of overheating. in addition, the effect of coloration on thermoregulation should change with egg size, as smaller eggs have higher surface-volume ratios and greater convective coefficients than larger eggs, so that s ... | 2018 | 30250681 |
| the influence of a hot environment on parental cooperation of a ground-nesting shorebird, the kentish plover charadrius alexandrinus. | parental care often increases offspring survival, but is costly to the parents. a trade-off between the cost and benefit of care is expected, so that when care provisioning by both parents is essential for the success of young, for instance in extremely cold or hot environments, the parents should rear their young together. we investigated the latter hypothesis in a ground nesting shorebird, the kentish plover charadrius alexandrinus in an extremely hot environment, the arabian desert. midday gr ... | 2010 | 20148101 |
| do tropical cyclones shape shorebird habitat patterns? biogeoclimatology of snowy plovers in florida. | the gulf coastal ecosystems in florida are foci of the highest species richness of imperiled shoreline dependent birds in the usa. however environmental processes that affect their macroecological patterns, like occupancy and abundance, are not well unraveled. in florida the snowy plover (charadrius alexandrinus nivosus) is resident along northern and western white sandy estuarine/ocean beaches and is considered a state-threatened species. | 2011 | 21264268 |
| spatial and temporal patterns of polycyclic aromatic hydrocarbons (pahs) in eggs of a coastal bird from northwestern iberia after a major oil spill. | this study investigated the spatial and temporal patterns of polycyclic aromatic hydrocarbons (pahs) in kentish plover (charadrius alexandrinus) eggs after a major oil spill (prestige, november 2002) in northwest iberia. we analysed a total of 77 eggs from 10 breeding localities of the iberian atlantic coast, 9 located along the galician coast (nw spain) and one in the ria de aveiro (portugal). general linear mixed models did not show a significant effect of the area on the total pah levels and ... | 2011 | 21482431 |