The present study reports on seasonal and spatial variations in diversity, distribution and abund... more The present study reports on seasonal and spatial variations in diversity, distribution and abundance of dinoflegellates and indicates the presence of HAB species in Pakistan waters. A total of 179 taxa, recorded in this study from offshore and near-shore waters, belong to 41 genera in 26 families and 10 orders. The high species count (149 species) was recorded from Manora Island offshore station (MI-1) and 105 spp, 109 spp and 115 spp were encountered from the Mubarak village offshore station (MV-1), Manora near shore station (MI-2) and Mubarak Village near-shore station (MV-2) respectively. Tripos furca was the dominant and frequently occurring species (> 1 x103 to > 25 x103 cells L-1 from coastal and >1x 105 cells L-l from near-shore stations) in addition to less abundant Alexandrium catenella, Alexandrium sp., Alexandrium minutum, and Prorocentrum micans (>103 to 25x 103cells/L). Another 44 species occurred in relatively low numbers (<103 cell L-l). Seventy specie...
The basic aim of this study was aimed to determine the ichthyofaunal diversity of River Panjkora ... more The basic aim of this study was aimed to determine the ichthyofaunal diversity of River Panjkora in both upper and lower Dir districts in Khyber Pakhtunkhwa province of Pakistan.Fish samples were collected by using fishnets from March to September 2020. A total of 724 specimens were collected and classified into 5 families, 14 genera, and 18 species. The overall results revealed that most fish fauna of river Panjkora contains 8 species of family Cyprinidae (56.49%) followed by 4 species of Nemacheilidae (24.44%), 2 species of Channidae (10.63%), and Sisoridae (7.04%), and 1 species of Mastacembelidae (1.38%), respectively. Among all kinds of fish species, Schizothorax plagiostomus (16.57%) was highly dominated and followed by Carassius auratus (11.87%) and Racoma labiata (9.66%) and were reported as highly abundant, especially during April, May, and June. The least abundant species were Glyptothorax punjabensis, Glyptothorax sufii, and Mastacembelus armatus, that constituting 2.48%,...
Salinity is one of the most critical environmental parameters regarding fish physiology, modifyin... more Salinity is one of the most critical environmental parameters regarding fish physiology, modifying food intake and growth performance in many fish species. The present study has investigated the effects of different salinity levels on growth performance, feeding and survival of Asian seabass Lates calcarifer juveniles. Asian seabass juveniles were reared at 0 (T1), 5 (T2), 22 (T3), 36 (T4), and 42 (T5) ppt salinity. Approximately eight hundred thirty fish individuals with an average weight of 1.24±0.52 g were randomly distributed (166 fish/Tank) in 5 concrete tanks (each tank 30×6×4 ft, volume 19,122 L) for forty days. Juveniles were initially fed 42% crude protein-containing diets at a rate of 6% of their body weight per day. The results showed that salinity level had a significant effect on the weight gain (WG), average daily weight gain (ADWG), specific growth rate (SGR), feed conversion ratio (FCR), survival rate (SR), total biomass and health indices (p<0.05). The highest WG...
Microplastic pollution is becoming an increasingly severe environmental problem. As compared to t... more Microplastic pollution is becoming an increasingly severe environmental problem. As compared to the marine ecosystem, freshwater ecosystems at high-altitude, remote regions are less studied and lag far behind. Thus, the present study aims to highlight this issue and fill the gap in this regard. The presence of microplastics (MPs) in the surface water and the gastrointestinal tracts (GITs) of brown trout (Salmo trutta) from Lake Mahodand, Kalam Swat, Pakistan, at a high altitude of 2865 m above sea level was investigated. For microplastic extraction, samples were digested with H2O2, NaCl solution was added for density separation, and then samples were filtered with a cellulose nitrate filter (pore size 0.45 µ). After this, visual observation and polymer detection with Fourier transform infrared spectroscopy, microplastics were characterized by their shapes, sizes, colors, and polymer types. In the surface water sample, MP particles were found in the range of 0–5 MPs/L, where the mean...
This study was conducted to estimate the diversity and the occurrence of commercially important f... more This study was conducted to estimate the diversity and the occurrence of commercially important finfish species collected by twenty fish sampling site of Sindh and Baluchistan coasts of the Arabian Sea in Pakistan from January to December 2019. Additionally, physicochemical characteristics of seawater were analyzed from these selected sites and found to be within suitable ranges required for fish growth and survive. A total of 81287 fish individuals were collected and identified as 49 species belonging to 26 families in our study. The most diversified family was Sparidae (13 species) followed by Carangidae and Lutjanidae (4 species), Mullidae, Serranidae, Ariidae (3 species), and Sciaenidae (2 species). The remaining 20 families were represented by only one species. The values of Shannon diversity index calculated for the four selected habitats revealed that high fish diversity was reported at Sonmiani Coast (H'=1.81), while less at Ormara Coast (H'=0.23). Likewise, Evenness...
The present investigation deals with the population and avian diversity of Safari Park and Karach... more The present investigation deals with the population and avian diversity of Safari Park and Karachi University campus area during the period from March, 2009 to December, 2009. A total of (N=176579) 1 individuals were recorded from the study areas (Safari park, Karachi and Karachi University) during the current study. Out of thes (n 1 =119986) 2 were recorded in University of Karachi campus while (n 2 =56593) 3 were observed from Safari Park. Maximum density of birds was recorded soon after the monsoon season (September and October) favoring the availability of food resources for birds. During research period, over all 44 species of birds were recorded belonging to 29 families. Out of these 26 species of birds were found common in both study areas. Including the common specie, 32 species were identified from wild habitat of Safari park belonging to 30 genera and 26 families, while University of Karachi supports 38 species including the common species belonging to 31 genera and 26 families. Avian diversity of Safari Park varied significantly as compared to the avian diversity of University of Karachi as in Safari Park no any member of order Galliformes was observed while in University of Karachi no any member of order Anseriformes and Pelicaniformes was observed during the study period.
ABSTRACT The induced effects of different concentration of Zinc Chloride (ZnCl2) on the haematolo... more ABSTRACT The induced effects of different concentration of Zinc Chloride (ZnCl2) on the haematological parameters of Rock Pigeon (Columba livia) were studied under laboratory conditions. The treatment of strong dose (20 µg/body weight) produced significant effects ...
... Information Induced Effect of Pesticides on Pigeon (Liver, Kidney, Testis, Heart Muscles and ... more ... Information Induced Effect of Pesticides on Pigeon (Liver, Kidney, Testis, Heart Muscles and Fat) Rahila Tabassum, Karim Gabol, Masarrat Yousuf and MZ Khan Department of ... Haya (1989) studied the effects of pyrethroids on fish he reported pyrethroids were toxic to fish. ...
The present investigation deals with the population and avian diversity of Safari Park and Karach... more The present investigation deals with the population and avian diversity of Safari Park and Karachi University campus area during the period from March, 2009 to December, 2009. A total of (N=176579)1 individuals were recorded from the study areas (Safari park, Karachi and Karachi University) during the current study. Out of these (n1=119986)2 were recorded in University of Karachi campus while (n2=56593)3 were observed from Safari Park. Maximum density of birds was recorded soon after the monsoon season (September and October) favoring the availability of food resources for birds. During research period, over all 44 species of birds were recorded belonging to 29 families. Out of these 26 species of birds were found common in both study areas. Including the common specie, 32 species were identified from wild habitat of Safari park belonging to 30 genera and 26 families, while University of Karachi supports 38 species including the common species belonging to 31 genera and 26 families. Avian diversity of Safari Park varied significantly as compared to the avian diversity of University of Karachi as in Safari Park no any member of order Galliformes was observed while in University of Karachi no any member of order Anseriformes and Pelicaniformes was observed during the study period.
The present study reports on seasonal and spatial variations in diversity, distribution and abund... more The present study reports on seasonal and spatial variations in diversity, distribution and abundance of dinoflegellates and indicates the presence of HAB species in Pakistan waters. A total of 179 taxa, recorded in this study from offshore and near-shore waters, belong to 41 genera in 26 families and 10 orders. The high species count (149 species) was recorded from Manora Island offshore station (MI-1) and 105 spp, 109 spp and 115 spp were encountered from the Mubarak village offshore station (MV-1), Manora near shore station (MI-2) and Mubarak Village near-shore station (MV-2) respectively. Tripos furca was the dominant and frequently occurring species (> 1 x103 to > 25 x103 cells L-1 from coastal and >1x 105 cells L-l from near-shore stations) in addition to less abundant Alexandrium catenella, Alexandrium sp., Alexandrium minutum, and Prorocentrum micans (>103 to 25x 103cells/L). Another 44 species occurred in relatively low numbers (<103 cell L-l). Seventy specie...
The basic aim of this study was aimed to determine the ichthyofaunal diversity of River Panjkora ... more The basic aim of this study was aimed to determine the ichthyofaunal diversity of River Panjkora in both upper and lower Dir districts in Khyber Pakhtunkhwa province of Pakistan.Fish samples were collected by using fishnets from March to September 2020. A total of 724 specimens were collected and classified into 5 families, 14 genera, and 18 species. The overall results revealed that most fish fauna of river Panjkora contains 8 species of family Cyprinidae (56.49%) followed by 4 species of Nemacheilidae (24.44%), 2 species of Channidae (10.63%), and Sisoridae (7.04%), and 1 species of Mastacembelidae (1.38%), respectively. Among all kinds of fish species, Schizothorax plagiostomus (16.57%) was highly dominated and followed by Carassius auratus (11.87%) and Racoma labiata (9.66%) and were reported as highly abundant, especially during April, May, and June. The least abundant species were Glyptothorax punjabensis, Glyptothorax sufii, and Mastacembelus armatus, that constituting 2.48%,...
Salinity is one of the most critical environmental parameters regarding fish physiology, modifyin... more Salinity is one of the most critical environmental parameters regarding fish physiology, modifying food intake and growth performance in many fish species. The present study has investigated the effects of different salinity levels on growth performance, feeding and survival of Asian seabass Lates calcarifer juveniles. Asian seabass juveniles were reared at 0 (T1), 5 (T2), 22 (T3), 36 (T4), and 42 (T5) ppt salinity. Approximately eight hundred thirty fish individuals with an average weight of 1.24±0.52 g were randomly distributed (166 fish/Tank) in 5 concrete tanks (each tank 30×6×4 ft, volume 19,122 L) for forty days. Juveniles were initially fed 42% crude protein-containing diets at a rate of 6% of their body weight per day. The results showed that salinity level had a significant effect on the weight gain (WG), average daily weight gain (ADWG), specific growth rate (SGR), feed conversion ratio (FCR), survival rate (SR), total biomass and health indices (p<0.05). The highest WG...
Microplastic pollution is becoming an increasingly severe environmental problem. As compared to t... more Microplastic pollution is becoming an increasingly severe environmental problem. As compared to the marine ecosystem, freshwater ecosystems at high-altitude, remote regions are less studied and lag far behind. Thus, the present study aims to highlight this issue and fill the gap in this regard. The presence of microplastics (MPs) in the surface water and the gastrointestinal tracts (GITs) of brown trout (Salmo trutta) from Lake Mahodand, Kalam Swat, Pakistan, at a high altitude of 2865 m above sea level was investigated. For microplastic extraction, samples were digested with H2O2, NaCl solution was added for density separation, and then samples were filtered with a cellulose nitrate filter (pore size 0.45 µ). After this, visual observation and polymer detection with Fourier transform infrared spectroscopy, microplastics were characterized by their shapes, sizes, colors, and polymer types. In the surface water sample, MP particles were found in the range of 0–5 MPs/L, where the mean...
This study was conducted to estimate the diversity and the occurrence of commercially important f... more This study was conducted to estimate the diversity and the occurrence of commercially important finfish species collected by twenty fish sampling site of Sindh and Baluchistan coasts of the Arabian Sea in Pakistan from January to December 2019. Additionally, physicochemical characteristics of seawater were analyzed from these selected sites and found to be within suitable ranges required for fish growth and survive. A total of 81287 fish individuals were collected and identified as 49 species belonging to 26 families in our study. The most diversified family was Sparidae (13 species) followed by Carangidae and Lutjanidae (4 species), Mullidae, Serranidae, Ariidae (3 species), and Sciaenidae (2 species). The remaining 20 families were represented by only one species. The values of Shannon diversity index calculated for the four selected habitats revealed that high fish diversity was reported at Sonmiani Coast (H'=1.81), while less at Ormara Coast (H'=0.23). Likewise, Evenness...
The present investigation deals with the population and avian diversity of Safari Park and Karach... more The present investigation deals with the population and avian diversity of Safari Park and Karachi University campus area during the period from March, 2009 to December, 2009. A total of (N=176579) 1 individuals were recorded from the study areas (Safari park, Karachi and Karachi University) during the current study. Out of thes (n 1 =119986) 2 were recorded in University of Karachi campus while (n 2 =56593) 3 were observed from Safari Park. Maximum density of birds was recorded soon after the monsoon season (September and October) favoring the availability of food resources for birds. During research period, over all 44 species of birds were recorded belonging to 29 families. Out of these 26 species of birds were found common in both study areas. Including the common specie, 32 species were identified from wild habitat of Safari park belonging to 30 genera and 26 families, while University of Karachi supports 38 species including the common species belonging to 31 genera and 26 families. Avian diversity of Safari Park varied significantly as compared to the avian diversity of University of Karachi as in Safari Park no any member of order Galliformes was observed while in University of Karachi no any member of order Anseriformes and Pelicaniformes was observed during the study period.
ABSTRACT The induced effects of different concentration of Zinc Chloride (ZnCl2) on the haematolo... more ABSTRACT The induced effects of different concentration of Zinc Chloride (ZnCl2) on the haematological parameters of Rock Pigeon (Columba livia) were studied under laboratory conditions. The treatment of strong dose (20 µg/body weight) produced significant effects ...
... Information Induced Effect of Pesticides on Pigeon (Liver, Kidney, Testis, Heart Muscles and ... more ... Information Induced Effect of Pesticides on Pigeon (Liver, Kidney, Testis, Heart Muscles and Fat) Rahila Tabassum, Karim Gabol, Masarrat Yousuf and MZ Khan Department of ... Haya (1989) studied the effects of pyrethroids on fish he reported pyrethroids were toxic to fish. ...
The present investigation deals with the population and avian diversity of Safari Park and Karach... more The present investigation deals with the population and avian diversity of Safari Park and Karachi University campus area during the period from March, 2009 to December, 2009. A total of (N=176579)1 individuals were recorded from the study areas (Safari park, Karachi and Karachi University) during the current study. Out of these (n1=119986)2 were recorded in University of Karachi campus while (n2=56593)3 were observed from Safari Park. Maximum density of birds was recorded soon after the monsoon season (September and October) favoring the availability of food resources for birds. During research period, over all 44 species of birds were recorded belonging to 29 families. Out of these 26 species of birds were found common in both study areas. Including the common specie, 32 species were identified from wild habitat of Safari park belonging to 30 genera and 26 families, while University of Karachi supports 38 species including the common species belonging to 31 genera and 26 families. Avian diversity of Safari Park varied significantly as compared to the avian diversity of University of Karachi as in Safari Park no any member of order Galliformes was observed while in University of Karachi no any member of order Anseriformes and Pelicaniformes was observed during the study period.
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University campus area during the period from March, 2009 to December, 2009. A total of
(N=176579)1 individuals were recorded from the study areas (Safari park, Karachi and Karachi
University) during the current study. Out of these (n1=119986)2 were recorded in University of
Karachi campus while (n2=56593)3 were observed from Safari Park. Maximum density of birds was
recorded soon after the monsoon season (September and October) favoring the availability of food
resources for birds. During research period, over all 44 species of birds were recorded belonging to 29
families. Out of these 26 species of birds were found common in both study areas. Including the
common specie, 32 species were identified from wild habitat of Safari park belonging to 30 genera
and 26 families, while University of Karachi supports 38 species including the common species
belonging to 31 genera and 26 families. Avian diversity of Safari Park varied significantly as
compared to the avian diversity of University of Karachi as in Safari Park no any member of order
Galliformes was observed while in University of Karachi no any member of order Anseriformes and
Pelicaniformes was observed during the study period.
University campus area during the period from March, 2009 to December, 2009. A total of
(N=176579)1 individuals were recorded from the study areas (Safari park, Karachi and Karachi
University) during the current study. Out of these (n1=119986)2 were recorded in University of
Karachi campus while (n2=56593)3 were observed from Safari Park. Maximum density of birds was
recorded soon after the monsoon season (September and October) favoring the availability of food
resources for birds. During research period, over all 44 species of birds were recorded belonging to 29
families. Out of these 26 species of birds were found common in both study areas. Including the
common specie, 32 species were identified from wild habitat of Safari park belonging to 30 genera
and 26 families, while University of Karachi supports 38 species including the common species
belonging to 31 genera and 26 families. Avian diversity of Safari Park varied significantly as
compared to the avian diversity of University of Karachi as in Safari Park no any member of order
Galliformes was observed while in University of Karachi no any member of order Anseriformes and
Pelicaniformes was observed during the study period.