Craniometric geographical variation in Hylaeamys megacephalus populations

Craniometric Variation Among Medieval Croatian Populations

Model-Based Clustering of World Craniometric Variation

Model-based clustering is applied to 2,504 crania of 28 populations of recent Homo sapiens using 57 cranial metric variates. This technique uses no a priori knowledge about the population affiliation of each skull. Model-based clustering varies the number and form of the clusters and selects a “good” model, showing a balance of data fit and parsimony, using the Bayes Information Criterion. Four...

Chromosome Number Variation in Iranian Populations of Acorus calamus

Different ploidy levels, diploid (2n=2x=24) to hexaploid (2n=6x=72) have been reported for Acorus calamus, a perennial medicinal plant. According to available information, there is a significant relationship between the ploidy level and essential oil compositions and medicinal properties of this important genetic resource. However, there is no information about the chromosome number of A. calam...

Exploring Geographical Variation

In this paper, we present national maps of relative rates of mortality associated with short-term exposure to particulate matter < 10 pm in aerodynamic diameter (PM 10). We report results for 88 of the largest metropolitan areas in the United States from 1987 to 1994 for all-cause mortality, combined cardiovascular and respiratory deaths, and other causes of mortality. Maximum likelihood estima...

Variation between geographical populations of Lutzomyia (Nyssomyia) whitmani (Antunes & Coutinho, 1939) sensu lato (Diptera:Psychodidae:Phlebotominae) in Brazil.

Phylogenetic analysis of morphometric and biological characters indicated that there are two distinct forms of Lutzomyia whitmani in Brazil: one is present both north and south of the River Amazonas in the State of Pará while the other occurs in northeast Brazil, in the State of Ceará, and further south, including the type locality in State of Bahia. The Amazonian form is reportedly neither str...