University Journal of Zoology, Rajshahi University, 2007
Methionine and tryptophan were supplemented with food at four concentrations viz. 250, 500, 750 a... more Methionine and tryptophan were supplemented with food at four concentrations viz. 250, 500, 750 and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and different cocoon characters in the mulberry silkworm, Bombyx mori L. Treatments significantly enhanced the performance of all the parameters in both parental and F1 generations except the filament denier. Significant differences were also observed between the generations of all the parameters except the filament length. However, the highest concentration (1000 ppm) of both the compounds decreased the growth parameters in comparison to control. Key words: Bombyx mori, methionine, tryptophan, growth, filament length Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.57-62
and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and diff... more and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and different cocoon characters in the mulberry silkworm, Bombyx mori L. Treatments significantly enhanced the performance of all the parameters in both parental and F1 generations except the filament denier. Significant differences were also observed between the generations of all the parameters except the filament length. However, the highest concentration (1000 ppm) of both the compounds decreased the growth parameters in comparison to control.
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
World Journal of Advanced Research and Reviews, 2021
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
World Journal of Advanced Research and Reviews, 2021
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
World Journal of Advanced Research and Reviews, 2021
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
Heronry refers to a nesting congregation of colonial aquatic birds belonging to the family Ardeid... more Heronry refers to a nesting congregation of colonial aquatic birds belonging to the family Ardeidae which comprises herons and egrets (Ali 1996). Ray et al. (1996), however, defined heronry as the nesting areas of herons, egrets and other associated water birds. Heronries may be composed of a single or mixed species of water birds, which have significant importance not only to ornithologists, biologists and bird watchers, but also to amateur photographers, reporters and tourists. Such heronries are located around the world viz. Kaggaladu
Bangladesh Journal of Scientific and Industrial Research, 2010
Ecdysone is a steroid hormone especially found in insects and mammals. One day old pupae of Tribo... more Ecdysone is a steroid hormone especially found in insects and mammals. One day old pupae of Tribolium castaneum were exposed to crude ecdysone at different concentrations of 10, 20, 40, 80, 160, and 320 μl/kg of whole wheat flour each for 1, 3 and 5 days. Adult recovery was significantly reduced in the treated pupae (F=3.47, P<0.01, df=7), and produced deformed individuals (F=39.29, P<0.001, df=7) at all exposure periods. The developmental time was similar in both the treated and untreated ones. The latent effect of the ecdysone treatment increased both the larval (F=4.26, P<0.001, df=7) and pupal (F=8.56, P<0.001, df=7) periods of the progeny reared on untreated foods. Similarly, the latent effect hampered recovery of the adult progeny (F=7.79, P<0.001, df=7) producing deformed individuals (F=2.65, P<0.05, df=7). Key words: Ecdysone; T. castaneum; Developmental period; Adult recovery. DOI: 10.3329/bjsir.v45i1.2213 Bangladesh J. Sci. Ind. Res. 45(1), 63-68, 2010
University Journal of Zoology, Rajshahi University, 2012
Dishwashing liquids viz. Vim and Trix at concentrations of 0.5, 1.0, 1.5 and 2.0% were toxic agai... more Dishwashing liquids viz. Vim and Trix at concentrations of 0.5, 1.0, 1.5 and 2.0% were toxic against the adult American cockroach, Periplaneta americana L. after 24-h of exposure. Knockdown effect of the detergents was found to be 70-78% by contact with both the detergents. Whereas, by dipping 100% of the cockroaches were knocked down and ultimately died at 24-h exposure. The LC50 values were calculated for contact toxicity were 1.490% for Vim and 0.883% for Trix. The results revealed that Trix is more toxic than Vim against the adult P. americana. Keywords: Dishwashing liquid; toxicity; Periplaneta americana. DOI: http://dx.doi.org/10.3329/ujzru.v29i1.9466 UJZRU 2010; 29(1): 51-55
With a view to gather information on the diversity, habitat, distribution and residential status ... more With a view to gather information on the diversity, habitat, distribution and residential status of avifauna of Joypurhat District under Rajshahi Division, a systematic field study was conducted for a period of eight months from April to November 2010. The study area was divided into the following five Upazila sites viz. Site A Joypurhat Sadar; Site B Khetlal; Site C Panchbibi; Site D Akkelpur and Site E Kalai. A total of 57 species, belonging to 8 orders, 28 families and 48 genera, were recorded. Of 57 species, 47.37% were non-passerines and 52.63% passerines; 89.43% were resident and 11.57% migratory. The status of the birds ranged from 14.04% for fairly common to 45.61% for rare species. The diversity of the bird species ranged from 25 (47.37%) for site D to 39 (68.42%) for site A. The study revealed that most of the species used more than one habitat and the highest number of species, 52 (91.23%), was observed on the trees, whereas the lowest number of species, 3 (5.26%), was fo...
University Journal of Zoology, Rajshahi University, 2013
The result of bird watching at Rajshahi University (RU) campus during a period from March 2008 to... more The result of bird watching at Rajshahi University (RU) campus during a period from March 2008 to July 2012 is presented in this article. A total of 159 species of birds under 102 genera, 36 families and 13 orders were observed. Highest number of species (76) and genera (41) are passerines, of which the highest number of species belongs to Corvidae family. Among the non-passerines (83 species) maximum number of species is under the family Ardeidae. Three species remained unidentified. Among the birds of RU campus 121 species are residents of Bangladesh; 38 species are migratory, of which 29 are winter visitors, 2 are summer visitors and 7 are passage migrants. Maximum of the bird species are habitants of the open woods.DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15399Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 39-47
University Journal of Zoology, Rajshahi University, 2007
Methionine and tryptophan were supplemented with food at four concentrations viz. 250, 500, 750 a... more Methionine and tryptophan were supplemented with food at four concentrations viz. 250, 500, 750 and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and different cocoon characters in the mulberry silkworm, Bombyx mori L. Treatments significantly enhanced the performance of all the parameters in both parental and F1 generations except the filament denier. Significant differences were also observed between the generations of all the parameters except the filament length. However, the highest concentration (1000 ppm) of both the compounds decreased the growth parameters in comparison to control. Key words: Bombyx mori, methionine, tryptophan, growth, filament length Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.57-62
and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and diff... more and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and different cocoon characters in the mulberry silkworm, Bombyx mori L. Treatments significantly enhanced the performance of all the parameters in both parental and F1 generations except the filament denier. Significant differences were also observed between the generations of all the parameters except the filament length. However, the highest concentration (1000 ppm) of both the compounds decreased the growth parameters in comparison to control.
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
World Journal of Advanced Research and Reviews, 2021
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
World Journal of Advanced Research and Reviews, 2021
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
World Journal of Advanced Research and Reviews, 2021
The present study revealed that a total of 101 indigenous species of large fish (28 species) and ... more The present study revealed that a total of 101 indigenous species of large fish (28 species) and Small Indigenous fish (73 species) belonging to 63 genera and 31 families were observed and identified while 17 exotic fish species were found under 5 families. Among the indigenous species, the highest number of species were found in family Cyprinidae and Bagridae with a relative diversity of 28.28% and 11.11%. In case of group species richness, highest number 27 fish species were found in catfish group followed by 12 species of carp, 8 species of each barbs and minnows, 6 species of eel fish, 8 species of loaches, 4 species of each prawn, snake-headed or airbreathing fish and glass perches, 3 species of each climbing perches and clupeid, 2 species of each goby fish, knifefish and puffer fish, and rest of the group true perch, leaf fish, halfbeak fish, Needlefish, mullet fish, anchovies and killifish has one species. Of the total species, 47 species were considered as least concerned, 1...
Heronry refers to a nesting congregation of colonial aquatic birds belonging to the family Ardeid... more Heronry refers to a nesting congregation of colonial aquatic birds belonging to the family Ardeidae which comprises herons and egrets (Ali 1996). Ray et al. (1996), however, defined heronry as the nesting areas of herons, egrets and other associated water birds. Heronries may be composed of a single or mixed species of water birds, which have significant importance not only to ornithologists, biologists and bird watchers, but also to amateur photographers, reporters and tourists. Such heronries are located around the world viz. Kaggaladu
Bangladesh Journal of Scientific and Industrial Research, 2010
Ecdysone is a steroid hormone especially found in insects and mammals. One day old pupae of Tribo... more Ecdysone is a steroid hormone especially found in insects and mammals. One day old pupae of Tribolium castaneum were exposed to crude ecdysone at different concentrations of 10, 20, 40, 80, 160, and 320 μl/kg of whole wheat flour each for 1, 3 and 5 days. Adult recovery was significantly reduced in the treated pupae (F=3.47, P<0.01, df=7), and produced deformed individuals (F=39.29, P<0.001, df=7) at all exposure periods. The developmental time was similar in both the treated and untreated ones. The latent effect of the ecdysone treatment increased both the larval (F=4.26, P<0.001, df=7) and pupal (F=8.56, P<0.001, df=7) periods of the progeny reared on untreated foods. Similarly, the latent effect hampered recovery of the adult progeny (F=7.79, P<0.001, df=7) producing deformed individuals (F=2.65, P<0.05, df=7). Key words: Ecdysone; T. castaneum; Developmental period; Adult recovery. DOI: 10.3329/bjsir.v45i1.2213 Bangladesh J. Sci. Ind. Res. 45(1), 63-68, 2010
University Journal of Zoology, Rajshahi University, 2012
Dishwashing liquids viz. Vim and Trix at concentrations of 0.5, 1.0, 1.5 and 2.0% were toxic agai... more Dishwashing liquids viz. Vim and Trix at concentrations of 0.5, 1.0, 1.5 and 2.0% were toxic against the adult American cockroach, Periplaneta americana L. after 24-h of exposure. Knockdown effect of the detergents was found to be 70-78% by contact with both the detergents. Whereas, by dipping 100% of the cockroaches were knocked down and ultimately died at 24-h exposure. The LC50 values were calculated for contact toxicity were 1.490% for Vim and 0.883% for Trix. The results revealed that Trix is more toxic than Vim against the adult P. americana. Keywords: Dishwashing liquid; toxicity; Periplaneta americana. DOI: http://dx.doi.org/10.3329/ujzru.v29i1.9466 UJZRU 2010; 29(1): 51-55
With a view to gather information on the diversity, habitat, distribution and residential status ... more With a view to gather information on the diversity, habitat, distribution and residential status of avifauna of Joypurhat District under Rajshahi Division, a systematic field study was conducted for a period of eight months from April to November 2010. The study area was divided into the following five Upazila sites viz. Site A Joypurhat Sadar; Site B Khetlal; Site C Panchbibi; Site D Akkelpur and Site E Kalai. A total of 57 species, belonging to 8 orders, 28 families and 48 genera, were recorded. Of 57 species, 47.37% were non-passerines and 52.63% passerines; 89.43% were resident and 11.57% migratory. The status of the birds ranged from 14.04% for fairly common to 45.61% for rare species. The diversity of the bird species ranged from 25 (47.37%) for site D to 39 (68.42%) for site A. The study revealed that most of the species used more than one habitat and the highest number of species, 52 (91.23%), was observed on the trees, whereas the lowest number of species, 3 (5.26%), was fo...
University Journal of Zoology, Rajshahi University, 2013
The result of bird watching at Rajshahi University (RU) campus during a period from March 2008 to... more The result of bird watching at Rajshahi University (RU) campus during a period from March 2008 to July 2012 is presented in this article. A total of 159 species of birds under 102 genera, 36 families and 13 orders were observed. Highest number of species (76) and genera (41) are passerines, of which the highest number of species belongs to Corvidae family. Among the non-passerines (83 species) maximum number of species is under the family Ardeidae. Three species remained unidentified. Among the birds of RU campus 121 species are residents of Bangladesh; 38 species are migratory, of which 29 are winter visitors, 2 are summer visitors and 7 are passage migrants. Maximum of the bird species are habitants of the open woods.DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15399Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 39-47
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