The present study was conducted on some aspects of histology and morphology of gonadal development and spermatogenesis of the striped piggy fish,Pomadasys stridens from the Arabian Sea near Karachi coast.A preliminary...The present study was conducted on some aspects of histology and morphology of gonadal development and spermatogenesis of the striped piggy fish,Pomadasys stridens from the Arabian Sea near Karachi coast.A preliminary investigative study was carried on genetic-variability,morpho-histological characters to observe the differences between both gonads of both the sexes along with the size of the associated fat bodies.Both the gonads were investigated and classified in seven different stages of maturity.Testes were found asymmetrical in measurement with the right testis larger than the left one.It was found that meiotic activity and spermatid development showed the opposite relationship.The left testis showed a relatively greater activity than the right one.展开更多
In the present work on population status,threats and conservation of the spotted pond turtle;Geoclemys hamiltonii(Gray,1830)(Geoemydidae)was conducted in Thatta,Sujawal and Badin districts of Sindh province of Pakista...In the present work on population status,threats and conservation of the spotted pond turtle;Geoclemys hamiltonii(Gray,1830)(Geoemydidae)was conducted in Thatta,Sujawal and Badin districts of Sindh province of Pakistan.A total number of 277 live specimens of G.hamiltonii from southeast province(Sindh)of Pakistan have been collected from different water bodies and sites in three consecutive year’s i.e 2015-2017.The population status of G.hamiltonii has recorded as decreasing in Sindh due to habitat destruction,eutrophication,agricultural farming and some other anthropogenic activities.This species is mostly used as pet and the poachers mostly carrying this species for trade in East Asian countries.The globally illegal trading hubs of this species are Bangkok,Taiwan and Hong Kong.More and powerful actions and efforts are needed to raise awareness of smuggling of wildlife,with a specific need of formal memorandums of understanding(MOUs)are strongly encouraged south Asian and east Asian countries to control illegal trade between the countries and territories along the trade route of Bangladesh,India,Pakistan,Thailand,Hong Kong and Taiwan to improve cross border enforcement.展开更多
文摘The present study was conducted on some aspects of histology and morphology of gonadal development and spermatogenesis of the striped piggy fish,Pomadasys stridens from the Arabian Sea near Karachi coast.A preliminary investigative study was carried on genetic-variability,morpho-histological characters to observe the differences between both gonads of both the sexes along with the size of the associated fat bodies.Both the gonads were investigated and classified in seven different stages of maturity.Testes were found asymmetrical in measurement with the right testis larger than the left one.It was found that meiotic activity and spermatid development showed the opposite relationship.The left testis showed a relatively greater activity than the right one.
文摘In the present work on population status,threats and conservation of the spotted pond turtle;Geoclemys hamiltonii(Gray,1830)(Geoemydidae)was conducted in Thatta,Sujawal and Badin districts of Sindh province of Pakistan.A total number of 277 live specimens of G.hamiltonii from southeast province(Sindh)of Pakistan have been collected from different water bodies and sites in three consecutive year’s i.e 2015-2017.The population status of G.hamiltonii has recorded as decreasing in Sindh due to habitat destruction,eutrophication,agricultural farming and some other anthropogenic activities.This species is mostly used as pet and the poachers mostly carrying this species for trade in East Asian countries.The globally illegal trading hubs of this species are Bangkok,Taiwan and Hong Kong.More and powerful actions and efforts are needed to raise awareness of smuggling of wildlife,with a specific need of formal memorandums of understanding(MOUs)are strongly encouraged south Asian and east Asian countries to control illegal trade between the countries and territories along the trade route of Bangladesh,India,Pakistan,Thailand,Hong Kong and Taiwan to improve cross border enforcement.
