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DNA; Pleistocene epoch; Sorex; Y chromosome; body size; climate; cryptic species; genetic distance; genetic structure; mitochondria; phylogeny; phylogeography; riparian areas; shrews; skull; sympatry; tail; taxonomy; China; Himalayan region
Abstract:
... The striped-back shrew group demonstrates remarkable variation in skull and body size, tail length, and brightness of the dorsal stripe; and karyotypic and DNA variation has been reported in recent years. In this study, we investigated the phylogenetic structure of the group, as well as speciation patterns and demographic history in Mountains of Southwestern China and adjacent mountains, including ...
... Ecological niche modeling can provide insights into a species’ demography, ecology and biogeography, and the environmental factors that determine them. Exploration of ecological niche models and niche-divergence among closely-related and cryptic organisms can also be useful for species delineation and discrimination, and such information can inform and facilitate conservation of their populations. ...
Hylidae; Miocene epoch; Neotropics; Pleistocene epoch; biodiversity; caatinga; cerrado; climate; cryptic species; demography; ecotones; new species; phylogeny; tectonics; Amazonia; Brazil
Abstract:
... Despite extensive research on biodiversity in Neotropical forests, biodiversity in seasonally dry, open biomes in South America has been underestimated until recently. We leverage a widespread group, Boana albopunctata, to uncover cryptic lineages and investigate the timing of diversification in Neotropical anurans with a focus on dry diagonal biomes (Cerrado, Caatinga and Chaco) and the ecotone b ...
... Grazing exclusion may be used to promote the recovery of disturbed ecosystems. A promising way for the evaluation of its effectiveness is through the monitoring of key biological groups, particularly those more responsive to disturbance and playing key roles in ecosystem functioning. Ants have been used as ecological indicators as they are abundant, diverse and sensitive to environmental changes. ...
... The southeastern Nearctic is a biodiversity hotspot that is also rich in cryptic species. Numerous hypotheses (e.g., vicariance, local adaptation, and Pleistocene speciation in glacial refugia) have been tested in an attempt to explain diversification and the observed pattern of extant biodiversity. However, previous phylogeographic studies have both supported and refuted these hypotheses. Therefo ...
... Before the background of increasingly frequent outbreaks and cases of mosquito-borne diseases in various European countries, Germany recently realised the necessity of updating decade-old data on the occurrence and spatiotemporal distribution of culicid species. Starting in 2011, a mosquito monitoring programme was therefore launched with adult and immature mosquito stages being collected at numer ...
... Understanding the process of speciation and the factors driving the geographical distribution patterns of species is of great interest in ecology and evolutionary biology. Herein, we investigated the phylogeographic patterns, speciation, demographic history and genetic structure of the widespread endemic Odorrana graminea sensu lato in Southern China and adjacent areas. A total of 439 specimens fr ...
Bathyergus; Cryptomys; Miocene epoch; altitude; climate; climate change; cryptic species; drainage; evolution; grasslands; habitats; mitochondria; phytogeography; rain; rivers; rodents; sea level; species richness; taxonomy; temperature; threatened species; South Africa
Abstract:
... The family Bathyergidae (comprising six genera) is a group of subterranean rodents endemic to sub-Saharan Africa. Our understanding of the evolution and species richness of the South African bathyergid genera Georychus, Bathyergus and Cryptomys is limited, with the majority of species listed as Least Concern by the IUCN Red List of Threatened Species. Genetic data suggest that several cryptic spec ...
... Melon thrips (Thrips palmi) is the principal insect pest of vegetable and ornamental plants worldwide. In addition to inflicting feeding injuries on host plants, they act as vectors of economically damaging tospoviruses. Application of insecticides and host plant resistance has proven largely ineffective in the management of T. palmi. However, increasingly, genetic knowledge is being successfully ...
... In the context of climate changes, factors that determine the distribution patterns of European species of the ubiquitous ant genus Tetramorium were investigated. The study took place along a steep North‐South climatic gradient across the boundary between the European Continental and Mediterranean biogeographical regions spanning 460 km along the Rhône valley, France. Ants from 1690 Tetramorium co ...
... A study of numeric morphology-based alpha-taxonomy (NUMOBAT) considering the species Formicaexsecta Nylander, 1846 and F.fennica Seifert, 2000 was performed in 166 nest samples with 485 worker individuals originating from 117 localities of the Palaearctic west of 59°E. The presence of intraspecific pilosity dimorphism is shown for F.exsecta. The setae-reduced phenotype, termed the Rubens morph, sh ...
Merodon; biodiversity; case studies; climate; conservation areas; conservation status; cryptic species; environmental factors; geographical distribution; global warming; habitats; insects; models; Alps region
Abstract:
... Cryptic species represent a large component of hidden biodiversity. Some cryptic taxa require specific climate and habitat conditions and have limited dispersal abilities. In order to assess the importance of cryptic species and to minimize future loss of biodiversity, we modelled the current and future distribution of the Merodon atratus (Oldenberg, 1919) species complex, once thought to be a sin ...
... Since the advent and widespread use of high-resolution molecular markers in the late 1970s, it is now well established that natural populations of insects are not necessarily homogeneous genetically and show variations at different spatial scales due to a variety of reasons, including hybridization/introgression events. In a similar vein, populations of insects are not necessarily homogenous in ti ...
... AIM: The drivers of extraordinary species diversity and endemism in biodiversity hotspots remain elusive. To identify such drivers, it is necessary to understand the origin of allopatric cryptic diversity that formed as an important part of the biodiversity in low‐latitude montane areas. Here, we test hypotheses regarding the patterns and processes that underlie the diversity of Asian shrew‐like m ...
... Genetic determinants of speciation in closely related species are poorly understood. We sequenced and analyzed transcriptomes of swallowtail butterflies Heraclides cresphontes (northeastern species) and Heraclides rumiko (southwestern species), a pair of mostly allopatric sister species whose distribution ranges overlap narrowly in central Texas. We found that the two swallowtails confidently diff ...
... Taxonomic uncertainties in the Rattus genus persist due to among-species morphological conservatism coupled with within-species environmental variation in morphology. As a result, this genus contains a number of possible cryptic species. One important example can be found in R. praetor, where morphological studies indicate it is a possible species complex. Genetic studies of R. praetor (limited to ...
... AIM: To investigate models assessing the influence of geomorphology and climatic shifts on species diversification in sub‐Saharan Africa by reconstructing the pattern and timing of phylogenetic relationships of rain frogs (Brevicipitidae: Breviceps). LOCATION: Sub‐Saharan Africa, south of the Congo Basin. METHODS: Multilocus sequence data were generated for near complete species‐level sampling of ...
... Ecologists increasingly rely on molecular delimitation methods (MMs) to identify species boundaries, thereby potentially increasing the number of putative species because of the presence of morphologically cryptic species. It has been argued that cryptic species could challenge our understanding of what determine large‐scale biodiversity patterns which have traditionally been documented from morph ...
... Coinfection by several pathogens is increasingly recognized as an important feature in the epidemiology and evolution of plant fungal pathogens. Oak mildew is induced by two closely related Erysiphe invasive species (Erysiphe alphitoides and E. quercicola) which differ in their mode of overwintering. We investigated how climate influences the co-occurrence of the two species in oak young stands an ...
... Reconstructing the assembly of local ecological communities requires insight from a wide range of disciplines including biogeography, paleontology, ecology, and evolutionary biology. Community assembly depends on the availability of species in a regional species pool (a “biota”), which itself is assembled through a history of diversification, geographic range shifting, and adaptive responses to en ...
Bemisia tabaci; climate; cryptic species; genetic analysis; genetic markers; genetic variation; genotyping; greenhouses; microsatellite repeats; mitochondria; phylogeography; population genetics; population structure; Hawaii
Abstract:
... The Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) cryptic species complex of whitefiies contains two species, MEAM1 and MED, that are highly invasive in supportive climates the world over. In the United States, MEAM1 occurs both in the field and in the greenhouse, but MED is only found in the greenhouse. To make inferences about the population structure of both species, and the origin and re ...