2 edition of Molecular studies of incipient speciation in the Ipomopsis aggregata complex (Polemoniaceae) found in the catalog.
Molecular studies of incipient speciation in the Ipomopsis aggregata complex (Polemoniaceae)
Paul Gilead Wolf
Written in English
|Statement||by Paul Gilead Wolf.|
|The Physical Object|
|Pagination||x, 112 leaves, bound :|
|Number of Pages||112|
Family: flaxflowered ipomopsis, more PLANT: Annual in AZ or biennial, cm tall, simple to branched; stems glabrous to sparsely short pubescent. LEAVES: glabrous to sparsely short pilose, deeply lobed. INFLORESCENCE: diffuse, with , subsessile to long pedicelled flowers at tips of branches. FLOWER: calyx mm long, short glandular. Speciation analysis has become important for food, environmental, and pharmaceutical industries, where simply measuring the total amount of an element is insufficient. Identifying the different species and concentrations of those species provides a more informed understanding of the environmental or health related impact associated with a. Population and Speciation Genomics Here you will find lecture slides and learning activities for the Workshop on Population and Speciation Genomics. These activities are designed by the faculty and the workshop team and will be updated during the workshop.
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Links to PubMed are also available for Selected by: Understanding genetic causes and effects of speciation in sympatric populations of sexually reproducing eukaryotes is challenging, controversial, and of practical importance for controlling rapidly evolving pests and pathogens. The major African malaria vector mosquito Anopheles gambiae sensu stricto (s.
) is considered to contain two incipient species with strong reproductive isolation Cited by: zones of contact between species of the. aggregata complex (e. Grant and Wilken, ), intermediates between Giliop sis species are absent despite range overlap.
Thus, natural bar riers to gene exchange are apparently more complete in this group. In general, study of Giliopsis complements the classic work in the. aggregata complex. Spiked ipomopsis is a member of the Phlox family (or Jacobs-ladder family), Polemoniaceae. There are close to 25 genera and species worldwide, both annuals and perennials, including herbs, shrubs, small trees, and vines.
Much of its diversity occurs in California. Some of the key family features include five sepals, five fused petals. Breakdown in the Process of Incipient Speciation in Anopheles gambiae The Harvard community has made this article openly available. Please share how this access benefits you.
Your story matters Citation Nwakanma, Davis C.Daniel E. Neafsey, Musa Jawara, Majidah Adiamoh, Emily Lund, Amabelia Rodrigues, Kovana M. Loua, et al. Ipomopsis aggregata (Polemoniaceae) is one of a profusion of wildflowers that occur in dry meadows at the Rocky Mountain Biological Laboratory in Gothic, Colorado.
It flowers from late June into August, and is visited and pollinated primarily by migrating Broad-tail and Rufous hummingbirds. Author Summary Ecological speciation can be defined as the evolution of new, reproductively isolated, species driven by natural selection and ecologically-mediated sexual selection.
Its genomic signature has mainly been studied in ecotypes and emerging species that started diverging hundreds to thousands of generations ago, while little is known about the very early stages of species. Glossina palpalis s. comprises G. palpalis palpalis and G. palpalis gambiense; studies suggest incipient speciation in G.
palpa11 and G. gambiense. 12 The foregoing taxa are allopatric and hybrid males are sterile, the females typically sterile or semisterile. 13 Based on morphological criteria, Glossina fuscipes s.
consists of. Ipomopsis aggregata (syn. Gilia aggregata) Scarlet Gilia, Skyrocket. Ipomopsis. Flowers are extremely diverse and vary in color, scent, shape, and the reward used to attract pollinating insects or birds. These traits are thought to have evolved principally as adaptations for attracting and exploiting pollinators which, in turn, evolve characteristics improving their ability to forage on particular flowers.
The WNPS Native Plant Directory goal is to provide basic information on Washington State native plants including identifying features, plant propagation and landscaping uses, ethnobotanical uses, and conservation and restoration uses.
Members of the Ipomopsis aggregata species complex in the phlox family (Polemoniaceae) often hybridize when they occur in sympatry, and thus have been extensively studied to examine processes.
Natural variation in plant pathogens has an impact on food security and ecosystem health. The rice blast fungus Pyricularia oryzae, which limits rice production in all rice-growing areas, is structured into multiple lineages.
Diversification and the maintenance of multiple rice blast lineages have been proposed to be due to separation in different areas and differential adaptation to rice. The genus Metrosideros Banks in Hawaii comprises five morphologically recognizable species. In the present study M.
rugosa, M. tremuloides. As studies have shown on Aquilegia and artificial flowers (Hodges et al. ;Sprayberry and Suver, ), the orientation of flowers can render the visual organs of many pollinators useless.
This study aims to resolve the taxonomic status and phylogenetic relationships of the Octopus tetricus species complex, using a combination of molecular and morphological techniques. Due to the emerging fisheries value and the lack of species-level resolution within the tetricus complex, taxonomic resolution within this group will aid in the.
Case studies of bears and bees further validate some of the findings from our simulation study, and reveal the importance of using an informed starting point for molecular species delimitation. Our results highlight the key factors affecting the performance of molecular species delimitation, with potential benefits for using these methods.
Molecular Identification of Anopheles Species in the Study Communities. Malaria vector species composition in the selected communities based on molecular identification in Gboko and Otukpo Local Government Area, Benue State in (Table 3), shows a significant difference.
This implies that the Hainan Hwamei is an incipient species and that speciation occurred through ecologically divergent selection andor assortative mating rather than a strictly allopatric process.
AB - Because of their isolation, continental islands (e.Madagascar) are often thought of as ideal systems to study allopatric speciation. Noteworthy Characteristics. Ipomopsis rubra, a member of the phlox family, is an erect biennial or short-lived perennial which is native to the southeastern U.
Features narrow, unbranched, leafy stems (' tall) which are topped in summer with narrow, spike-like panicles of red tubular flower has a narrow corolla tube (to 1" long) which flares at the end to form a five-lobed star.
speciation 14 species concepts 16 isolation of populations 17 types of speciation 18 allopatric speciation 18 sympatric speciation 19 phylogenetic relationship 20 5. insects as models in evolution 21 plant insect interactions 21 6. examples of insect evolution and speciation Species: Ipomopsis aggregata.
Name. Ipomopsis aggregata References. Aliso. a series of papers on the native plants of California. [Title originally El Aliso] ; USDA, ARS, Germplasm Resources Information Network. Ipomopsis aggregata in the Germplasm Resources Information Network (GRIN), U.
Department of Agriculture. The most effective pollinator principle implies that floral characteristics often reflect adaptation to the pollinator that transfers the most pollen, through a combination of high rate of visitation to flowers and effective deposition of pollen during each visit.
The genus Ipomopsis figured prominently in Verne Grant's early work on plant speciation (Grant Grant, ) and has continued to be the focus of many ecological and evolutionary studies on topics that include competition for pollination, gene flow and genetic structure, herbivory, hybridization and nectar robbing.
Genetic studies have shown clear genetic differences between sympatric species pairs (Taylor McPhail,). However, the foraging environment to which sticklebacks are exposed has also been shown to have a direct effect on the expression of the phenotype of. When populations have diverged and they are mostly isolated from each other in terms of gene flow, though some interbreeding my occur, they are said to be incipient species.
Incipient speciation may be the first stage of what would be considered true and complete speciation in which populations are no longer able to interbreed. Freeman, S.Herron, J. Evolutionary analysis (pp. Molecular data, new analytical Partly this is a matter of bad timing: Levin was completing his book just as phylogeographic studies of evolution, long-distance gene flow may have also played a key role in affecting genetic divergence at different spatial scales and incipient speciation (e.
see Mitton et al.). A past study using two molecular markers, COI and 28S, revealed that A. unicolor is paraphyletic with respect to A. microunicolor. To better investigate species boundaries in the complex, we implement the cohesion species concept and use multiple lines of evidence for testing genetic exchangeability and ecological interchangeability.
Incipient speciation in widespread species. The establishment of reproductive isolation is a critical component of species formation because it is required for the initial divergence and for the subsequent maintenance of different species. For instance, if species A and B are adapted to different environments, any hybrids that arise would have.
Various models purporting to explain natural hybrid zones make different assumptions about the fitness of hybrids. One class of models assumes that hybrids have intrinsically low fitness due to gen. Speciation in real time. Februaryupdate July The Central European blackcap (left) and Galapagos ground finch (right) are two bird species that have undergone speciation recently, while scientists observed.
We often think of speciation as a slow process. All the available evidence supports the idea that different species evolved. Ipomopsis aggregata, Scarlet Gillia (old nomenclature: Gilia aggregata) (Native) Biennial or perennial, 1 3 ft.
tall, erect stature plant found native in much of the western US from low semi-deserts to montane zones. Requires well drained but various texture soils. Low water requirements, drought and cold-tolerant but not shade-tolerant.
Ipomopsis aggregata, a dicot, is a perennial herb that is native to California, and also found elsewhere in western North America.
This plant is available commercially. Jepson eFlora. Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. Consistent variation from the normal in appearance, physiology or behavior in a species that might lead to reproductive isolation and speciation.
The hybrid origin of Miscanthus purpurascens has previously been proposed, primarily because of its intermediate morphology. In this study, phylogenies based on the DNA sequences from the internal transcribed spacer region of nuclear ribosomal DNA (nrDNA ITS), on the DNA sequences of the trnL intron and trnL-F intergenic spacer of chloroplast DNA, and on amplified fragment length.
In their classic view of speciation, Coyne and Orr  proposed four criteria that would need to be met in order for compelling case studies of sympatric speciation to be established.
Given the restrictive conditions under which sympatric speciation is theoretically possible, these criteria for assessing empirical examples are equally stringent. Ipomopsis spicata, commonly known as the spiked ipomopsis, is a species of plant in the phlox is native to the western United States, where it is widespread from the western Great Plains to the Uintah Basin, south to New Mexico and north to is found in a variety of habitats, from dry lowlands to above the timberline.
Use of Drosophila natural variation to study the role of positive selection in cis-regulatory evolution and the genetic basis of a complex disease trait: Genomic evolution and incipient speciation in Drosophila melanogaster Ipomopsis aggregata. Speciation by natural selection occurs by 2 general mechanisms (4, 7).
The first of these is ecological speciation, defined as the evolution of reproductive isolation between populations, or subsets of a single population, as a result of ecologically-based divergent natural selection (6, 8 10).
Abstract Sympatric speciation is the splitting of one evolutionary lineage into two without the occurrence of geographic isolation. The concept has been intimately tied to entomology since the s, when Benjamin Walsh proposed that many host-specific phytophagous insects originate by shifting and adapting to new host plant species.
If true, sympatric speciation would have tremendous. because many of the studies have been performed in the field. This makes it possible to estimate the Table 1. Case studies of plant speciation.
Topic Taxa studied Conclusions Ref. Reproductive isolation Gilia capitata ssp. capitata and G. c. ssp. chamissonis Local adaptation of interfertile subspecies to different habitats restricts.Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge.
In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation. In sympatric speciation, groups from the same ancestral population evolve into.Pages in category "Ipomopsis" The following 14 pages are in this category, out of 14 total.
This list may not reflect recent changes ().