Journal of Avian Biology最新文献

{"title":"Tracking migration of black-headed buntings Emberiza melanocephala reveals the Iranian Plateau as an ecological barrier along the Indo-European flyway","authors":"Davor Ćiković,&nbsp;Sanja Barišić,&nbsp;Steffen Hahn,&nbsp;Vesna Tutiš,&nbsp;Jelena Kralj,&nbsp;Martins Briedis","doi":"10.1111/jav.02783","DOIUrl":"https://doi.org/10.1111/jav.02783","url":null,"abstract":"<p>The black-headed bunting is one of the few species that migrate along the Indo-European flyway, and its migration routes and phenology are poorly understood. We provide the first individual-based year-round tracking study describing route choice and timing of black-headed buntings migrating from a breeding site in Croatia to a 6000 km distant non-breeding region in Maharashtra, central India. To evaluate landscapes important for the black-headed bunting migration, we quantified land covers and climates along the migration corridor. Stopover areas during the post-breeding migration were concentrated in four distinct regions: the Balkan Peninsula, central Anatolia, along with the Zagros mountain range and from the Indus river delta to the Kathiawar Peninsula. Post-breeding migration routes followed the shortest path connecting breeding and non-breeding sites, except for the initial detour from the breeding sites to the first stopovers at the Balkan Peninsula. The pre-breeding migration routes occur along the Arabian Peninsula, about 1000 km south of the post-breeding routes – creating a clockwise loop migration pattern. Post-breeding migration lasted about two months, whereas pre-breeding migration was almost two times shorter, conforming to energy- and time-minimisation strategies, respectively. During the post-breeding migration, birds seem to track ecological niches found on their breeding grounds. Post-breeding stopover areas were rich in mosaic lands and were in warm and dry climates of Mediterranean character, while forests and bare areas, as well as arid and humid climates, were avoided. Based on distinctly scarce and widely dispersed stopovers and high travel speeds over the Iranian Plateau along with prolonged stopovers before and after the Plateau, we identified the Iranian Plateau as a major ecological barrier for buntings and likely for other species migrating along the Indo-European flyway.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jav.02783","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92291097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trophic strategies of two sympatric endemic pigeons in insular ecosystems: a framework for understanding spatiotemporal frugivory interactions","authors":"Patricia Marrero,&nbsp;Manuel Nogales","doi":"10.1111/jav.02803","DOIUrl":"https://doi.org/10.1111/jav.02803","url":null,"abstract":"<p>Pigeons are considered to play key ecological roles in frugivory and seed dispersal. They have colonised numerous oceanic islands and diversified into several species in sympatry. How these species coexist in similar niches is poorly understood although dietary separation is among the mechanisms suggested to avoid trophic overlap. We investigated the trophic ecology of the two endemic <i>Columba</i> species co-occurring in the laurel forest and thermosclerophyllous relicts of two of the Canary Islands. This study includes diet description in spatiotemporal terms, its relationship with fruit availability and seed treatment in 10 study areas established on La Palma and La Gomera. We used non-invasive DNA analysis to identify the faeces of the two congeneric species and microhistological methods to examine their diets. The degree of trophic overlap was evaluated by niche similarity and breadth indices. Molecular faecal sampling determined the spatiotemporal distribution of both pigeons to identify their areas of coexistence. These frugivorous pigeons' diets did not differ concerning the main plant species, but they diverged quantitatively in the proportions and parts of plants consumed. Lauraceae fruits were their staple foods although Rhamnaceae and some Fabaceae and Solanaceae were also important. Both pigeons showed selective preferences for some fruits. Significant spatiotemporal variations in their diets were observed along with a general tendency to increase fruit intake at its ripening times. Our results suggest that different trophic strategies facilitate the coexistence of these frugivorous columbids. These pigeons act as seed dispersers and/or predators depending on seed features (size and hardness), and this may have valuable implications for their conservation.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jav.02803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137863506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New distributional opportunities with niche innovation in Eurasian snowfinches","authors":"Marlon E. Cobos,&nbsp;Yalin Cheng,&nbsp;Gang Song,&nbsp;Fumin Lei,&nbsp;A. Townsend Peterson","doi":"10.1111/jav.02868","DOIUrl":"https://doi.org/10.1111/jav.02868","url":null,"abstract":"<p>This study explores the evolutionary history of ecological niche characters in the Eurasian snowfinch lineage. Specifically, we use new analytical approaches to reconstruct ecological niche evolution, taking into account uncertainty in knowledge of the ecological niche limits. We found an overall pattern of niche conservatism in relation to both temperature and precipitation characteristics of niches, but for one dramatic niche evolution event, in <i>Montifringilla nivalis</i>. Interestingly, this species is also that which has the broadest geographic distribution among snowfinches. We conclude that an evolutionary change in niche characteristics perhaps within <i>M. nivalis</i> (i.e. present in some and not all of its populations) made possible the broad, westward range expansion of that species, thus changing dramatically the distributional potential of the snowfinch lineage.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jav.02868","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92337141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gardeners of the forest: hornbills govern the spatial distribution of large seeds","authors":"Rohit Naniwadekar,&nbsp;Charudutt Mishra,&nbsp;Kavita Isvaran,&nbsp;Aparajita Datta","doi":"10.1111/jav.02748","DOIUrl":"https://doi.org/10.1111/jav.02748","url":null,"abstract":"<p>Seed dispersal by frugivores is vital to the maintenance of tree diversity in tropical forests. However, determining the influence of different frugivores over the distribution of their food plants is difficult, given the complexity of these interactions in the tropics. Consequently, most studies have been restricted to small scales, examining seed dispersal and establishment associated with nests, roosts or fruiting trees. Here, we evaluate the role of frugivorous hornbills in dispersing seeds at spatial scales of 1 ha. We monitored hornbills and seed rain at a tropical forest site in north-east India. We quantified the abundance of hornbill food plants and recruits of large-seeded plants. We estimated removal rates of dispersed, large seeds to determine post-dispersal seed fate. We found that the distribution of large-seeded canopy food plants influenced the distribution of the relatively abundant <i>Rhyticeros undulatus</i>. The overall distribution of hornbills resulted in spatially contagious seed rain patterns for the large-seeded plant species. Patches with canopy food plants had a higher recruit diversity. Our results show positive feedback between distribution of rare but important hornbill food plants, hornbills and distribution of seeds and saplings of large-seeded plants in the landscape. Widespread loss of hornbills due to hunting and habitat loss in the region have likely disrupted these feedback mechanisms that are critical for tree species regeneration.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jav.02748","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137813230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sugar and nitrogen digestive processing does not explain the specialized relationship between euphonias and low-quality fruits","authors":"Ana C. Crestani,&nbsp;Marco A. Pizo,&nbsp;Antônio B. A. Fontanella,&nbsp;L. Gerardo Herrera M,&nbsp;Ariovaldo P. Cruz-Neto","doi":"10.1111/jav.02873","DOIUrl":"https://doi.org/10.1111/jav.02873","url":null,"abstract":"<p>In the Neotropical region, euphonias (<i>Euphonia</i> spp., Fringillidae) are the quintessential example of specialized bird frugivores, making the bulk of feeding visits to certain mistletoes (<i>Phoradendron</i> spp., Santalaceae) and epiphytes in the genus <i>Rhipsalis</i> (Cactaceae), whose fruits have high water and low sugar and protein concentrations. Surprisingly, a mechanistic explanation for such specialized, otherwise rare, relationships is lacking. Using captive birds and artificial diets, we contrasted euphonias with frugivorous tanagers in the genus <i>Thraupis</i> (Thraupidae), which rarely eats <i>Rhipsalis</i> fruits, to test the hypothesis that the digestive capacity of euphonias entails them to exploit such low-energy fruits. We expected that compensatory feeding in response to decreasing energy density would occur only in euphonias, whose higher reliance on fruits would entail a lower nitrogen requirement than the tanagers. Euphonias and tanagers were both able to compensate energy intake as sugar density decreased, and both species had the same mass-corrected energy intake at any given sugar concentration. Similarly, euphonias and tanagers did not differ in mass-corrected maintenance nitrogen requirement. Therefore, the physiological traits we investigated do not explain euphonias' specialization on <i>Rhipsalis</i> fruits. The fast rates of fruit passage typical of specialized avian frugivores as euphonias that entail the processing of a large volume of fruits and the putative better abilities of such birds to deal with secondary compounds likely present in <i>Rhipsalis</i> fruits are other possible mechanisms that should be considered in future studies to unveil the mechanisms underlying the intriguing specialized relationships between euphonias and certain fruits.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jav.02873","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137778763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ecomorphs are not species: the case of locally adapted populations of red crossbills","authors":"Geoffrey E. Hill,&nbsp;Matthew J. Powers","doi":"10.1111/jav.02896","DOIUrl":"https://doi.org/10.1111/jav.02896","url":null,"abstract":"<p>The process of speciation remains poorly understood and hence definitions of species continue to be a focus of sharp debate. A key unresolved issue in speciation debates is whether local populations that are somewhat distinct from a parent population in morphology or genotype but that remain connected to the parent population via gene flow should be recognized as species. The species status of the Cassia crossbill <i>Loxia sinesciuris</i>, as well as other distinctive populations in the red crossbill <i>Loxia curvirostra</i> clade including the parrot crossbill <i>L. pytyopsittacus</i> and the Scottish crossbill <i>L. scotica</i>, are test cases for whether the hundreds of other avian ecomorphs should be taxonomically elevated to full species. We argue that these regional populations of red crossbills do not meet stated criteria for species designation under the Biological Species Concept and, regardless of species concept, fail as species simply following logic, parsimony, and consistency. There are no diagnostic morphological characteristics that definitively separate birds in the Cassia crossbill, parrot crossbill, or Scottish crossbill populations from birds in other sympatric crossbill populations. Call type, the behavioral characteristic that is proposed to distinguish Cassia crossbills, parrot crossbills and Scottish crossbills from other populations of crossbills, is learned and can change within the life of an individual. There is evidence of substantial on-going gene flow between Cassia crossbills, parrot crossbills, and Scottish crossbill and other populations of red crossbills, and there is no divergence in mitochondrial genotype. Instead, there exist few fixed genetic differences in nuclear genotype between individuals from these local crossbill populations and individuals from other red crossbill populations. We propose that the recognition of the Cassia crossbill, parrot crossbill and Scottish crossbill as species sets a poor precedent in avian taxonomy and muddles understanding of the process of speciation.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jav.02896","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137969989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sperm numbers on the perivitelline layers of blue tit eggs are repeatable within a clutch, but independent of the occurrence of extra-pair paternity","authors":"Peter Santema,&nbsp;Kim Teltscher,&nbsp;Bart Kempenaers","doi":"10.1111/jav.02826","DOIUrl":"https://doi.org/10.1111/jav.02826","url":null,"abstract":"<p>In many socially monogamous bird species, females produce offspring sired by males other than their social partner. A large body of research has aimed to elucidate the evolutionary causes and consequences of such extra-pair paternity, but relatively little is known about the underlying behaviour. The number of sperm on the egg's perivitelline layers (PVL) is related to recent copulation activity and may thus give some insight into the female's mating behaviour. We used a simple technique that allowed us to remove embryonic cells from the blastoderm for DNA extraction whilst keeping the PVL intact for sperm counts. Using 243 eggs from 99 blue tits <i>Cyanistes caeruleus</i>, we show that PVL sperm numbers were repeatable within clutches (r = 0.40 [95% CI: 0.25–0.53]). However, neither overall sperm numbers nor changes in sperm numbers across the laying sequence differed between clutches that contained extra-pair sired eggs and those that did not. Our results, therefore, provide no evidence that females with and without extra-pair young differ in their copulation activity.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/jav.02826","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137681429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anthropogenic noise, song, and territorial aggression in southern house wrens","authors":"Pedro Diniz,&nbsp;Charles Duca","doi":"10.1111/jav.02846","DOIUrl":"https://doi.org/10.1111/jav.02846","url":null,"abstract":"<p>Anthropogenic noise constrains the transmission of birdsong and alters the behavior of receivers. Many birds adjust their acoustic signals to minimize the interference of anthropogenic noise on signal transmission. Birds may also change their acoustic signals to exchange information during aggressive interactions. However, it is unclear how birds deal with a potential trade-off between adjusting their acoustic signals to better transmit in noisy environments versus mediating aggressive interactions. Additionally, we do not know how urbanization and anthropogenic noise alters the territorial behavior of receivers. We investigated the interplay among song, territorial aggression, urbanization, and anthropogenic noise, in males of the southern house wren <i>Troglodytes aedon musculus</i>, using recordings of spontaneous songs (non-aggressive context) and a playback experiment simulating a male territorial intrusion (aggressive context). We found that urban wrens behaved more aggressively in response to the intruder by singing more and spent more time closer to the intruder than rural wrens regardless of noise. Males produced songs with lower minimum frequency and trills with wider frequency bandwidth and higher vocal performance under acute (playback) than relaxed (post-playback) aggressive encounters. These results suggest that males use songs to communicate aggressive intent or fighting ability. Urban wrens produced higher-pitched songs and trills than rural wrens irrespective of aggressive context. Urban wrens in the noisiest territories also produced the highest-pitched trills but only in the non-aggressive context. Rural wrens in the noisiest territories tended to produce the longest songs (non-aggressive context) or produced the shortest songs (aggressive context). Results suggest that urbanization affects territorial and vocal behaviors in southern house wrens. Males in this species seem to primarily adjust acoustic signals in response to the territorial intruder rather than noise.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/jav.02846","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137681427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of the Chicamocha River Canyon on the phylogeography of humid montane forest birds in Colombia","authors":"Enrique Arbeláez-Cortés,&nbsp;Natalia Trujillo-Arias","doi":"10.1111/jav.02833","DOIUrl":"https://doi.org/10.1111/jav.02833","url":null,"abstract":"<p>Neotropical humid montane forest (HMF) is divided by landform discontinuities which could limit gene flow among populations. The northern Andes is a complex montane system and an excellent region to compare the role of discontinuities dividing HMFs on the phylogeography of bird species. We study phylogeographic patterns of seven HMF bird species in the western slope of the eastern Cordillera to test whether the phylogeographic structure coincides with the presence of two landform discontinuities. We sequenced and analyzed a mitochondrial DNA locus from individuals collected in localities on both sides of the xeric ecosystems of the Chicamocha River Canyon and on both sides of the depression below 2000 m a.s.l. that separates the mountain range of Serranía de los Yariguies from the rest of the eastern Cordillera. Despite the low sample size for some species in particular localities, our results show that the major phylogeographic structure within most species (i.e. <i>Adelomyia melanogenys</i>, <i>Henicorhina leucophrys</i>, <i>Basileuterus tristriatus,</i> and <i>Mionectes olivaceus</i>) is located between both sides of the canyon. However, there is no phylogeographic structure in <i>Doryfera ludovicae</i>, <i>Premnoplex brunnescens</i>, and <i>Arremon brunneinucha</i>, despite some degree of genetic structure in the last two. Our results support a role of the Chicamocha River Canyon as a barrier diminishing, or precluding, gene flow. Evidence of gene flow between populations separated by the landform discontinuity between Serranía de los Yariguies and the rest of the eastern Cordillera indicates that it is not a barrier for most of the species, but could be a barrier to <i>A. melanogenys</i> that exhibits a different phylogeographic pattern. For this hummingbird, the haplotype of the Serranía de los Yariguies is related to haplotypes in other HMFs far away from the study region. Altitudinal changes of the HMF due to paleoclimatic changes are considered to explain the phylogeographic patterns of the species.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/jav.02833","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137677766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The multifaceted vocal duets of white-browed sparrow weavers are based on complex duetting rules","authors":"Alena Lemazina,&nbsp;Lisa Trost,&nbsp;Manfred Gahr,&nbsp;Susanne Hoffmann","doi":"10.1111/jav.02703","DOIUrl":"https://doi.org/10.1111/jav.02703","url":null,"abstract":"<p>In some bird species, mated pairs sing duet songs for pair bond maintenance and joint territory defense. Duet partners often follow specific duetting rules, such as answering rules and duet codes, to construct their duet songs. Previous studies mainly concentrated on species that repeat particular phrase pairings during duetting. Our study aims to add to the comparative aspect of duetting research by investigating duet structure in songs of white-browed sparrow weavers <i>Plocepasser mahali</i>, a songbird species that does not repeat the same type of vocalization but switches between different types of vocal elements within one duet song. We used lightweight radio-telemetric microphone transmitters to record the vocal activity in both individuals of duetting pairs simultaneously. This technique enabled us not only to investigate duetting behavior in naturally behaving animals, but also to assign each vocalization to the respective individual while maintaining the precise temporal relationship between the vocalizations of both partners. Our data reveal that although white-browed sparrow weavers share a large part of their sex-specific vocal repertoires with same-sex birds of other pairs, duetting partners adhere to pair-specific answering rules to generate their highly complex duet songs. Moreover, partners can combine answering rules into consistent duet trains. Duet trains generally represent only the core of the duet songs, while at the beginning and the end of duet songs, partners arrange their vocalization types more flexibly. In addition to completely pair-specific duet trains, duet trains of white-browed sparrow weaver pairs can include subsequences that are shared between different pairs. The sharing pattern we find in this species suggests that in combination to pair-specific duetting rules, mated pairs use duetting rules that have been acquired prior to pair formation.</p>","PeriodicalId":15278,"journal":{"name":"Journal of Avian Biology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/jav.02703","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137556366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}