نتایج جستجو برای: cryptic

تعداد نتایج: 9824  

Journal: :Genes & development 1999
Y T Yan K Gritsman J Ding R D Burdine J D Corrales S M Price W S Talbot A F Schier M M Shen

Specification of the left-right (L-R) axis in the vertebrate embryo requires transfer of positional information from the node to the periphery, resulting in asymmetric gene expression in the lateral plate mesoderm. We show that this activation of L-R lateral asymmetry requires the evolutionarily conserved activity of members of the EGF-CFC family of extracellular factors. Targeted disruption of...

Journal: :Proceedings. Biological sciences 2001
L Lindström R V Alatalo A Lyytinen J Mappes

Initially, aposematism, which is an unprofitable trait, e.g. noxiousness conspicuously advertised to predators, appears to be a paradox since conspicuousness should increase predation by naive predators. However, reluctance of predators for eating novel prey (e.g. neophobia) might balance the initial predation caused by inexperienced predators. We tested the novelty effects on initial predation...

2015
Hayato Yanagida Ariel Gispan Noam Kadouri Shelly Rozen Michal Sharon Naama Barkai Dan S. Tawfik Mark D. Rausher

Errors in protein synthesis, so-called phenotypic mutations, are orders-of-magnitude more frequent than genetic mutations. Here, we provide direct evidence that alternative protein forms and phenotypic variability derived from translational errors paved the path to genetic, evolutionary adaptations via gene duplication. We explored the evolutionary origins of Saccharomyces cerevisiae IDP3 - an ...

Journal: :The Journal of Cell Biology 2001
Alan W. Dove

A cryptic collagen epitope (green) is exposed on some tumor blood vessels. collagen type IV in directing the growth of new blood vessels. Recent work has shown that proteolytic enzymes like the matrix metalloproteinases are required for normal angiogenesis, but the significance of these findings remained unclear. In the new work, the authors analyzed a monoclonal antibody that binds to proteoly...

2015
Vlad Dincă Sergio Montagud Gerard Talavera Juan Hernández-Roldán Miguel L. Munguira Enrique García-Barros Paul D. N. Hebert Roger Vila

How common are cryptic species--those overlooked because of their morphological similarity? Despite its wide-ranging implications for biology and conservation, the answer remains open to debate. Butterflies constitute the best-studied invertebrates, playing a similar role as birds do in providing models for vertebrate biology. An accurate assessment of cryptic diversity in this emblematic group...

2017
A M Jauset E Edo-Tena P M Parés-Casanova C Castañé N Agustí O Alomar

Within the genus Macrolophus (Heteroptera: Miridae), the species M. costalis (Fieber), M. melanotoma (Costa) and M. pygmaeus (Rambur) are present in the Mediterranean region on a wide variety of plant species. While M. costalis can easily be separated from the other two by the black tip at the scutellum, M. pygmaeus and M. melanotoma are cryptic species, extremely similar to one another in exte...

2010
Ronara Souza Ferreira Chantal Poteaux Jacques Hubert Charles Delabie Dominique Fresneau Fanny Rybak

The taxonomic challenge posed by cryptic species underlines the importance of using multiple criteria in species delimitation. In the current paper we tested the use of acoustic analysis as a tool to assess the real diversity in a cryptic species complex of Neotropical ants. In order to understand the potential of acoustics and to improve consistency in the conclusions by comparing different ap...

2017
Yerim Lee Wonhoon Lee Mariusz Kanturski Robert G Foottit Shin-Ichi Akimoto Seunghwan Lee

Aphids are a species rich group comprising many important pests. However, species identification can be very difficult for aphids due to their morphological ambiguity. DNA barcoding has been widely adopted for rapid and reliable species identification as well as cryptic species detection. In this study, we investigated cryptic diversity in the subfamily Calaphidinae (Hemiptera: Aphididae) based...

Journal: :Journal of economic entomology 2014
Andrew J Frewin Cynthia Scott-Dupree Graeme Murphy Robert Hanner

Bemisia tabaci (Gennadius) is an economically important pest of agricultural and ornamental plants worldwide and is now widely recognized as a cryptic species complex. In North America, B. tabaci is a particularly important pest of greenhouse poinsettia. In poinsettia production, two cryptic species from the B. tabaci complex, Mediterranean and Middle East Minor 1, often infest crops simultaneo...

Journal: :Proceedings. Biological sciences 2012
W Chris Funk Marcel Caminer Santiago R Ron

One of the greatest challenges for biodiversity conservation is the poor understanding of species diversity. Molecular methods have dramatically improved our ability to uncover cryptic species, but the magnitude of cryptic diversity remains unknown, particularly in diverse tropical regions such as the Amazon Basin. Uncovering cryptic diversity in amphibians is particularly pressing because amph...

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