Bayesian clustering methods have emerged as a popular tool for assessing hybridization using genetic markers. Simulation studies have shown these methods perform well under certain conditions; however, these methods have not been evaluated using empirical data sets with individuals of known ancestry. We evaluated the performance of two clustering programs, baps and structure, with genetic data ...

We present the detection of He ii sources in the Im galaxy NGC 1569 from HST WFPC2 imagery. Out of the fifteen detections, seven were Wolf-Rayet stars, five were stellar clusters with associated He ii emission, and three were sources of unknown origin. The detected Wolf-Rayet stars’ colors and magnitudes are similar to Large Magellanic Cloud late-type WN stars. The physical origin of the other ...

We use carbon and nitrogen isotope data collected from two North American gray wolf (Canis lupus L., 1758) populations (Isle Royale and northern Minnesota) to both calculate carnivore-specific isotopic variables and investigate wolf foraging ecology. The isotopic enrichments of 13C and 15N that occur between mammalian carnivores and their prey have not been well defined in modern populations. W...

All previously obtained wolf (Canis lupus) and dog (Canis familiaris) mitochondrial (mt) DNA sequences fall within an intertwined and shallow clade (the 'wolf-dog' clade). We sequenced mtDNA of recent and historical samples from 45 wolves from throughout lowland peninsular India and 23 wolves from the Himalayas and Tibetan Plateau and compared these sequences with all available wolf and dog seq...

We describe and figure Moina hemanti sp. nov. from ephemeral pools on the campus of Pune University, India. Although the pools flood during the monsoon, the moinid only appears irregularly and for a short period of time. In morphology, it is extremely close to Moina dumonti from Mexico and Cuba. This geographic gap remains unexplained for the time being, although more similar cases among cladoc...

Since gray wolf reintroduction in 1995, wolf populations in the northern Rocky Mountains have increased dramatically. Incidents of wolf predation on livestock have increased with wolf populations. Although rough tallies of livestock death or injury losses caused by wolf predation are made each year, we know almost nothing about the indirect effects of wolf-livestock interactions on cattle produ...

We discuss the progenitor evolution of high mass black hole binaries with black hole of mass ∼ > 10M⊙, like Cyg X-1. From the observed large space velocity of Cyg X-1, which we interpret as coming from a Blaauw-Boersma kick, we find that the helium envelope of the black hole progenitor must have been at least 16M⊙. Using new and improved wind mass loss rates for Wolf-Rayet stars, we are unable ...