Seasonal droughts during the Miocene drove the evolution of Capparaceae towards Neotropical seasonally dry forests / Las sequías estacionales del Mioceno impulsaron la evolución de Capparaceae hacia los bosques neotropicales estacionalmente secos

Abstract Introduction: Neotropical seasonally dry forest (NSDF) climatic constraints increased endemism, and phylogenetic niche conservatism in species that are restricted to this biome. NSDF have a large number of endemic Capparaceae taxa, but it is unknown if phylogenetic niche conservatism has played a role in this pattern. Objective: We carried out an evolutionary analysis of the climatic niche of neotropical species of Capparaceae to identify whether the climatic constraints of NSDF have played a major role throughout the family's evolutionary history. Methods: Using three chloroplastic (ndhF, matK, rbcL) and one ribosomal (rsp3) DNA sequences, we proposed a date phylogeny to reconstruct the evolutionary climatic niche dynamics of 24 Neotropical species of Capparaceae. We tested the relationship between niche dissimilarity and phylogenetic distance between species using the Mantel test. Likewise, we used a set of phylogenetic comparative methods (PGLS) on the phylogeny of Capparaceae to reconstruct the main evolutionary historic events in their niche. Results: Capparaceae originated in humid regions and subsequently, convergent evolution occurred towards humid and dry forest during the aridification phases of the Middle Miocene (16-11 Mya). However, adaptation towards drought stress was reflected only during the precipitation of the coldest quarter, where we found phylogenetic signal (Pagel λ) for gradual evolution and, therefore, evidence of phylogenetic niche conservatism. We found convergent species-specific adaptations to both drought stress and rainfall during the Miocene, suggesting a non-phylogenetic structure in most climatic variables. Conclusions: Our study shows how the Miocene climate may have influenced the Capparaceae speciation toward driest environments. Further, highlights the complexity of climatic niche dynamics in this family, and therefore more detailed analyses are necessary in order to better understand the NSDF climatic constrictions affected the evolution of Capparaceae.

Resumen Introducción: Las limitaciones climáticas del bosque neotropical estacionalmente seco (NSDF) produjeron endemismo y conservadurismo filogenético del nicho en especies restringidas a este bosque. En las Caparáceas neotropicales se ha encontrado endemismo en los NSDF, pero se desconoce si el conservadurismo de nicho filogenético ha influido en su evolución. Objetivos: Se llevó a cabo un análisis evolutivo del nicho climático de las especies neotropicales de Capparaceae para evaluar si las limitaciones climáticas del bosque neotropical estacionalmente seco (NSDF) han jugado un papel importante a lo largo de la historia evolutiva de la familia. Métodos: Usando tres secuencias de ADN cloroplastico (ndhF, matK, rbcL) y una ribosomal (rsp3) se propuso una filogenia datada para reconstruir la dinámica evolutiva del nicho climático de 24 especies Neotropicales de Capparaceae. Utilizando la prueba de Mantel, se realizaron análisis para establecer si hay diferencia de nicho y la distancia filogenética entre especies. Asimismo, se emplearon un conjunto de métodos comparativos filogenéticos sobre la filogenia de la familia para reconstruir los principales eventos históricos evolutivos en su nicho. Resultados: Capparaceae se originó en regiones húmedas y posteriormente se dio una evolución convergente hacia bosque húmedo y seco durante las fases de aridificación del Mioceno Medio (16-11 Ma). Sin embargo, la adaptación al estrés por sequía se reflejó solo en la precipitación del cuarto más frío del año, donde se evidencio señal filogenética, evolución gradual y, por lo tanto, evidencia de conservadurismo de nicho filogenético. También se hallaron especies con adaptaciones convergentes específicas tanto al estrés por sequía como a las lluvias durante el Mioceno, sugiriendo la carencia de estructura filogenética en la mayoría de las variables climáticas. Conclusiones: Este estudio muestra cómo el clima del Mioceno pudo haber influenciado la especiación de Capparaceae hacia ambientes mas secos. Además, la compleja dinámica del nicho climático en esta familia y, por lo tanto, la necesidad de realizar análisis más detallados para comprender mejor como las constricciones climáticas del NSDF afectaron la evolución de Capparaceae.

Systematics of Clupeiformes and testing for ecological limits on species richness in a trans-marine/freshwater clade

Clupeiformes (herring, sardines, shad, anchovies and allies) are a globally distributed clade with nearly 400 marine, freshwater, and diadromous species. Although best known as filter feeding fishes that form large schools, this group occupies a diverse array of trophic guilds and habitats. Theory suggests that species richness in clades is modulated by ecological limits, which results in diversity-dependent clade growth, a pattern that most clades exhibit. As a trans-marine/freshwater clade that has undergone repeated transitions between marine and freshwaters, Clupeiformes are an excellent system for investigating the interplay between ecological diversity and macroevolutionary dynamics. In this study we review the systematics of Clupeiformes and explore discordance in phylogenetic relationships and divergence times between mitochondrial and nuclear loci. We then use comparative methods to test whether ecological limits regulate diversity in Clupeiformes. We find discordance in phylogenetic relationships at various taxonomic scales, but also considerable agreement between genomes. Our results suggest that trans-marine/freshwater clades are able to circumvent ecological limits on clade growth at regional, but not on local scales. Our study demonstrates that phylogenies are a critical link between ecology and macroevolutionary dynamics, and suggests habitat transitions can play a key role in shaping diversity patterns, particularly in the neotropics.(AU)

Clupeiformes (apapás, sardinhas e manjubas) são um clado globalmente distribuído com quase 400 espécies marinhas, de água doce e diádromas. Embora mais conhecida pela presença de peixes filtradores formadores de cardumes, este grupo apresenta uma diversidade de guilda e habitats tróficos. A teoria sugere que a riqueza de espécies em clados é modulada por limites ecológicos, o que resulta em um crescimento dependente da diversidade, um padrão que a maioria dos clados exibem. Como um clado que sofreu repetidas transições entre águas marinhas e as águas doces, os clupeiformes são um excelente grupo para investigar a interação entre a diversidade ecológica e a dinâmica macroevolutiva. Neste estudo, revisamos a sistemática de Clupeiformes e exploramos a discordância nas relações filogenéticas e os tempos de divergência entre loci mitocondriais e nucleares. Em seguida, utilizamos métodos comparativos para testar se os limites ecológicos regulam a diversidade em Clupeiformes. Encontramos discordância nas relações filogenéticas em várias escalas taxonômicas, mas também considerável concordância entre os genomas. Nossos resultados sugerem que clados que sofreram sucessivas transições entre águas marinhas e águas doces são capazes de contornar os limites ecológicos do crescimento durante a sua diversificação em escala global, mas não localmente. Nosso estudo demonstra que as filogenias apresentam um vínculo crítico entre a ecologia e a dinâmica macroevolutiva, e sugere que as transições de hábitats podem desempenhar um papel fundamental na modelagem dos padrões de diversidade, particularmente no neotrópico.(AU)

Comparative study of test results of different hematology analyzer in Sports Biochemistry Laboratories / 国际检验医学杂志

Objective To explore the method of comparing different hematology analyzer in Sports Biochemistry Laboratories with the median concentration.Methods In accordance with the American Society of Clinical and Laboratory Standards Institute EP9-A2 document requirements,ADVIA120(120) was chosen as a standard comparative instrument,ADVIA2120i(2120) as a test instrument,six different batches of normal and non-normal 2 quality control were monitored continuously for one year,combined with 42 cases of fresh sample which were selected randomly,the author analyzed the precision,accuracy and comparability of the two instruments,and white blood cell(WBC),red blood cell (RBC),hemoglobin(HGB),hematocrit (HCT),mean corpuscular volume(MCV),mean corpuscular hemoglobin(MCH),mean corpuscular hemoglobin concentration(MCHC) and platelet(PLT) were chosen as the test indicators.Results The precision(CV％ values within a range of 0.9-5.0) of the two instruments were all within the CLIA'88 1/4 tolerance accepted range;All indicators' percentage difference between the two instruments are fit with the International Blood Standardization Committee(ICSH) Standard.The test results of 42 blood samples detected by different hematological analyzers were analyzed by regression analysis,which showed that the correlative coefficient (r) was over 0.97.Conclusion The method of continuously monitored the normal and non-normal 2 quality control for one year,combined with 42 cases of fresh sample which were selected randomly can well be used in the study of tests results comparability and consistency of two different hematological analyzers in Sports Biochemistry Laboratories.

Comparative study of test results of different hematology analyzer in Sports Biochemistry Laboratories / 国际检验医学杂志

Objective To explore the method of comparing different hematology analyzer in Sports Biochemistry Laboratories with the median concentration.Methods In accordance with the American Society of Clinical and Laboratory Standards Institute EP9-A2 document requirements,ADVIA120(120) was chosen as a standard comparative instrument,ADVIA2120i(2120) as a test instrument,six different batches of normal and non-normal 2 quality control were monitored continuously for one year,combined with 42 cases of fresh sample which were selected randomly,the author analyzed the precision,accuracy and comparability of the two instruments,and white blood cell(WBC),red blood cell (RBC),hemoglobin(HGB),hematocrit (HCT),mean corpuscular volume(MCV),mean corpuscular hemoglobin(MCH),mean corpuscular hemoglobin concentration(MCHC) and platelet(PLT) were chosen as the test indicators.Results The precision(CV％ values within a range of 0.9-5.0) of the two instruments were all within the CLIA'88 1/4 tolerance accepted range;All indicators' percentage difference between the two instruments are fit with the International Blood Standardization Committee(ICSH) Standard.The test results of 42 blood samples detected by different hematological analyzers were analyzed by regression analysis,which showed that the correlative coefficient (r) was over 0.97.Conclusion The method of continuously monitored the normal and non-normal 2 quality control for one year,combined with 42 cases of fresh sample which were selected randomly can well be used in the study of tests results comparability and consistency of two different hematological analyzers in Sports Biochemistry Laboratories.