The use of sequence polymorphism from individual mitochondrial genes to infer past demography has recently proved controversial because of the recurrence of selective sweeps acting over genes and the need for unlinked multilocus data sets. However, comparative analyses using several species for one gene and/or multiple genes for one species can serve as a test for potential selective effects an...

Rove beetles of the tribe Quediini are abundant predators in humid microhabitats forested, open, synanthropic or subterranean ecosystems, with just over 800 species distributed across temperate and subtropical regions Northern Hemisphere. Previous molecular phylogenies included only a limited representation this diversity but have already indicated that Quedius, containing majority species, is ...

 This study describes length-weight relationships of five species (platycephalus indicus, Pseudorhombus elevates, Plicofollis tenuispinis, Grammoplites suppositus, Pomadays stridens) collected from Persian Gulf (Khuzestan province, Iran) during December 2009 to November 2011. A total of 2065 specimen were examined for this study. The relationship between weight and to...

The evolutionary importance of hybridization and introgression has long been debated. Hybrids are usually rare and unfit, but even infrequent hybridization can aid adaptation by transferring beneficial traits between species.Hereweuse genomic tools to investigate introgression inHeliconius, a rapidly radiating genus of neotropical butterflieswidely used in studies of ecology, behaviour,mimicry ...

The evolutionary importance of hybridization and introgression has long been debated. Hybrids are usually rare and unfit, but even infrequent hybridization can aid adaptation by transferring beneficial traits between species.Hereweuse genomic tools to investigate introgression inHeliconius, a rapidly radiating genus of neotropical butterflieswidely used in studies of ecology, behaviour,mimicry ...

Hallux rigidus, or localized osteoarthritis of the fi rst metatarsophalangeal joint, is a very common pathological condition that is often painful and disabling. This is the most common form of arthritis in the foot and has been estimated to affect up to 1 in 45 adults over the age of 50 (1). A progression of deformity is involved, beginning with mild impaired function, continuing on to increas...

The extent to which hybridization and the resulting interspecific gene flow (introgression) contribute to adaptation is a matter of great debate. On the one hand, fertile hybrids have the potential to transfer beneficial alleles between species [1] or even to spawn new species [2]. On the other hand, hybrids tend to have reduced fitness relative to parental species [3], which will often make th...