Results 101 to 110 of about 301,309 (281)

The latitudinal variation in amphibian speciation rates revisited

Communications Biology
Speciation can increase regional species richness, however, our knowledge of how and why speciation rates vary across space is still incomplete. Using comprehensive information on species distributions and their phylogenetic relationships, we describe ...
Adrián García-Rodríguez, Fabricio Villalobos, Julián A. Velasco, Franz Essl, Gabriel C. Costa   +4 more
doaj   +1 more source

Computer-augmented modeling studies of Pb(II) and Cd(II) complexes with maleic acid in ethylene glycol–water mixture

Chemical Speciation & Bioavailability, 2016
Chemical speciation of binary complexes of Pb(II) and Cd(II) ions with maleic acid have been studied pH metrically in the concentration range of 0–50% v/v ethylene glycol (EG)–water mixtures maintaining an ionic strength of 0.16 molL−1 at 303 K ...
Ch. Nageswara Rao, Bogi Srinu, V. Gowri Kumari, B. B. V. Sailaja   +3 more
doaj   +1 more source

Macro-evolutionary models and coalescent point processes: The shape and probability of reconstructed phylogenies

, 2013
Forward-time models of diversification (i.e., speciation and extinction) produce phylogenetic trees that grow "vertically" as time goes by. Pruning the extinct lineages out of such trees leads to natural models for reconstructed trees (i.e., phylogenies ...
Lambert, Amaury, Stadler, Tanja
core  

Deciphering the Evolution Pattern of Structural Variations Overlapped With Repetitive Sequence During Cattle Evolution

Advanced Science, EarlyView.
The authors complement bovine pan‐SV with massive novel structural variations (SVs) identified through long‐read sequencing of 83 globally distributed cattle breeds. Repetitive sequence‐mediated SVs (rep‐SV) exhibit distinct dynamic patterns throughout cattle sub‐speciation and/or domestication processes, including uneven distribution between chr‐X and
Zhifan Guo, Jinxiu Li, Adeniyi C. Adeola, Xueyan Jiang, Juntao Ma, Jian Xiao, Dexiang Hu, Kaixing Qu, Haihong Wu, Junren Chen, Zhanxing He, Tingting Yin, Ali Esmailizadeh, Jing Luo, Olivier Hanotte, Ya‐Ping Zhang, Yan Li   +16 more
wiley   +1 more source

Co-transport of Pb (II) and Cd (II) in saturated porous media: effects of colloids, flow rate and grain size

Chemical Speciation & Bioavailability, 2018
The transport of Pb(II) or Cd(II) in subsurface has been studied in the literature; however; their co-transport in porous media in presence of colloids has not been clearly understood.
Bingyi Xie, Yanji Jiang, Zhe Zhang, Gang Cao, Huimin Sun, Nong Wang, Shengsen Wang   +6 more
doaj   +1 more source

A new species of whipworm from a south american hystricomorph rodent

Memorias do Instituto Oswaldo Cruz, 1990
A new species of whipworm, Trichuris robusti, is described from the cecum and large intestine of rodent, Ctnomys robusti, collected in northern Chile. The nematode shows close affinityto T. bradleyi and T. chilensis, both having been described from Chile
B. B. Babero, R. B. Murua
doaj   +1 more source

Divergent Roles of mGlu2 and mGlu3 Receptors in Amyloid‐β Production and Cognitive Dysfunctions in Alzheimer's Disease

Advanced Science, EarlyView.
This study explores the opposing effects of the mGluR2 and mGluR3 receptors on amyloid precursor protein processing. mGluR2 promotes amyloidogenic cleavage, while mGluR3 favors non‐amyloidogenic pathways. Using a brain‐penetrant nanobody as a mGluR2 positive allosteric modulator, the study uncovers how its chronic activation aggravates amyloid‐β burden
Pierre‐André Lafon, Mireille Elodie Tsitokana, Ugo Guy Alenda, Yen‐Ling Lian, Clémentine Eva Philibert, Mathieu Oosterlaken, Marta Cimadevila, Gaëlle Dudon, Jessica Monnic, Salomé Roux, Julie Bessié, Séverine Diem, Franck Vandermoere, Laurent Prézeau, Patrick Chames, Julie Kniazeff, Sylvie Claeysen, Anaïs Menny, Jean‐Philippe Pin, Véronique Perrier, Jianfeng Liu, Philippe Rondard   +21 more
wiley   +1 more source

Ecological disruptive selection acting on quantitative loci can drive sympatric speciation

npj Systems Biology and Applications
The process of speciation generates biodiversity. According to the null model of speciation, barriers between populations arise in allopatry, where, prior to biology, geography imposes barriers to gene flow.
Pavithra Venkataraman, Supreet Saini
doaj   +1 more source

Efficient adsorptive removal of Congo red from aqueous solution by synthesized zeolitic imidazolate framework-8

Chemical Speciation & Bioavailability, 2016
Dyes exposure in aquatic environment creates risks to human health and biota due to their intrinsic toxic mutagenic and carcinogenic characteristics.
Canlan Jiang, Boming Fu, Hao Cai, Tianming Cai   +3 more
doaj   +1 more source

Computer simulations on the sympatric speciation modes for the Midas cichlid species complex [PDF]

, 2007
Cichlid fishes are one of the best model system for the study of evolution of the species. Inspired by them, in this paper we simulated the splitting of a single species into two separate ones via random mutations, with both populations living together ...
Jorge de Sá, Karen Luz-Burgoa, Suzana Moss de Oliveira   +2 more
core   +2 more sources