The reproductive characteristics of an endemic labeonine fish, Garra tibetana, were investigated by examining 778 individuals collected monthly, from December 2015 to November 2016, in the lower Yarlung Tsangpo River, Tibet, China. Results showed that females predominated overall population with a sex ratio 1:0.73, while for mature was 1:1. Standard length at first maturity estimated as 82.4 mm...

Abstract The present work deals with radon pollution arising from granitic rocks using an Alpha Guard monitor. Forty-four samples were collected five sites located in the Central part of Eastern Desert Egypt. minimum to maximum concentration for Gebel (mountain) El-Missikat MS, El-Gidamy GD, RieEl-Garra RG, El-Aradiya AR, and Kab-Amira KA 49,597 ± 8773 236,029 22,397 Bq m −3 , 39,658 8341 188,6...

Studies on fish community structure along altitudinal gradients of rivers are lacking in Nepal. This study was carried out to gauge the diversity and composition elevational gradient Ratuwa River. The varies between 70 m 1300 m. Fish samples were collected based habitat representativeness from April (spring) 10-18, July (summer) October (autumn) 2020 January (winter) 2021. A total 3447 specimen...

in the present study, we reported the results of the monitoring and investigations of the ichthyofauna of the beshar river, one of the tributaries of the tigris−euphrates basin in kohkiluyeh and boyer-ahmad province, southwest of iran. the results showed that during a period from 2010 to 2011, a total of 13 fish species belonging to 4 families and 3 orders were recorded in the beshar river. the...

kol river drains into the persian gulf and its watershed encompasses  areas  in  hormozgan, kerman and fars provinces. identification of fish species of the river was conducted seasonally from summer to winter 2005. we selected 8 sampling stations based on the height of  sea  level  from branches of kol river near estuary. totally, 160 specimens were caught with gillnet, cast net and hook. we i...