This study was carried out to investigate the genetic diversity and population structure of 90 specimens of Oxynoemacheilus argyrogramma collected from Sepidbarg, Gamasiab and Ghaleji rivers, in the west of Iran. Analyses using three microsatellite loci indicated that the average number of alleles in the population was 12, which was well above the reported values for freshwater fishes. The expe...

Lionesses, Panthera leoin the Serengeti ecosystem, Tanzania, assess the odds of winning group-territorial contests by counting the number of opponents they hear roaring. They will approach intruders aggressively only if they outnumber them. Here the lionesses in the Serengeti are compared with another population living nearby but in strikingly different ecological circumstances. The lions of Ng...

a detailed description of the osteological structure of kiabi loach ( oxynoemacheilus kiabii ), a recently described endemic species caught from gamasiab river, iran, is provided. seven specimens were collected by electrofishing in june 2013 and cleared and stained and its osteological structures were described. the results showed that o. kiabii can be distinguished from other members of the ge...

This study provides new data on chromosomal characteristics and DNA barcoding of three endemic loaches of Iran: spiny southern loach Cobitis linea (Heckel, 1847), Persian stream loach Oxynoemacheilus persa (Heckel, 1848) and Tongiorgi stream loach Oxynoemacheilus tongiorgii (Nalbant & Bianco, 1998). The chromosomes of these fishes were investigated by examining metaphase chromosome spreads obta...

This study was conducted to determine the relationship between length and weight (LWR) of 15 Oxynoemacheilus species i.e. bergianus, O. brandtii, chomanicus, euphraticus, elsae, frenatus, karunensis, kiabii, kurdistanicus, longipinnis, parvinae, persa, marunensis, zagrosensis, zarzianus from Iranian inland waters. LWRs with high coefficients determination were calculated for all species. The va...

Research on the allocation of resources to manage threatened species typically assumes that the state of the system is completely observable; for example whether a species is present or not. The majority of this research has converged on modeling problems as Markov decision processes (MDP), which give an optimal strategy driven by the current state of the system being managed. However, the pres...

Analysis of DNA sequence diversity at the 12S to 16S mitochondrial genes of 165 African lions (Panthera leo) from five main areas in Zambia has uncovered haplotypes which link Southern Africa with East Africa. Phylogenetic analysis suggests Zambia may serve as a bridge connecting the lion populations in southern Africa to eastern Africa, supporting earlier hypotheses that eastern-southern Afric...