abstract this study aimed to investigate the effects of different levels of the amino acid lysine on growth performance, feed efficiency and body composition of juvenile snow trout (schizothorax zarudnyi). for this purpose, 150 fish with average weight 22.51±0.28 g fed with five levels of dietary amino acid lysine including 0 (control), 7, 12, 17 and 22 g/kg diet, for 8 weeks. fish fed two time...

The genus Schizothorax (Cyprinidae), one of the most diverse genera of ichthyofauna of the Qinghai-Tibetan Plateau (QTP), is a good candidate for investigating patterns of genetic variation and evolutionary mechanisms. In this study, sequences from the mitochondrial control region, the cytochrome b gene, and two nuclear genes were used to re-examine the genetic diversity and investigate the evo...

A study of the Helminth parasites of fish of River Swat was conducted from September, 2012 to August, 2013. A total of 250 fish belonging to five genera and six species were examined. The parasites collected were Diplozoon khyberensis, Bathybothrium rectangulum, Bothriocephalus, Nippotaenia, Cucullanidae, Proteocephalus, Rhabdochona charsaddiensis, Rhabdochona schizothoracis and Neoechynorhynch...

The present study was undertaken to determine the incidence of helminth parasites in fishes with special reference to water quality parameters in Dal Lake and River Jhelum and correlate the observations. Water, fish, and parasite samples were collected during different seasons from various sites and processed. Three fish species, namely, Schizothorax niger Heckel 1838, Schizothorax esocinus Hec...

Adhesive apparatus is the modifications of the skin of the ventral surface. Fast water current is the single most important limiting factor deciding the occurrence and survival of fauna and flora unless equipped with special adaptive features to with-stand the vicissitudes of nature. In hillstream fishes, the presence of adaptive modifications in their body organization is of prime importance f...

Observations on the structure and function of the ear in amphisbaenians have been extended to two new species: to Blanus cinereus of the family Amphisbaenidae and Diplometopon zarudnyi of the family Trogonophidae. Blanus, considered one of the most primitive of this group of reptiles, shows a distinctive form of sound-receptive mechanism. The usual extracolumella is lacking, and the columella a...

This study aimed at determining blood biochemical parameters with potential diagnostic value to assess the nutritional status for healthy Snow trout, Schizothorax zarudnyi. For this purpose, three treatment groups of Snow trout (average weight, 65.9±5.3 g) were kept unfed for 24 h, 7 and 14 days. During the experiment, a natural photoperiod was adopted, water temperature was maintained at 23.2±...