Butterflies are widely regarded as the most reliable bioindicators of a healthy terrestrial ecosystem. This insect belongs to the order Lepidoptera of the class Insecta and plays an important role in preserving ecological dynamics. The objective of this paper is to review the species diversity of butterflies in Bangladesh. The data is based mainly on published records and field sampling. IUCN Bangladesh (2015) evaluated the threat status of 305 species of butterflies in 2015. The overall number of butterfly species in Bangladesh is now 421, with another 116 having just been added to the IUCN-Bangladesh list. Lycaenidae has the most species (124), followed by Hesperiidae (87), Nymphalidae (79), Satyridae (35), Pieridae (36), Papilionidae (32), Danaidae (19), Riodinidae (4), Amathusiidae (4), and finally Acraeidae, which has only one species. In the present review, it is shown that the family Lycaenidae has the highest percentage of butterfly species (29.45%) among the ten families. The number of Lycaenid butterflies is influenced by various factors, one of which is their ability to inhabit a diverse array of habitats. In contrast, Danaidae account for only 4.51% species of butterflies in Bangladesh, where only one Critically Endangered (CR) and endemic taxon, Euploea crameri nicevillei (Sundarban Crow) resides. Larval host plant documentation in the Sundarbans is essential for the conservation of this species, while the molecular data (COI gene) has already been sequenced and submitted to Genbank (MH269417). Finally, the data obtained from this paper is important for future planning and management of the conservation of the butterflies and their habitat in Bangladesh. Bangladesh J. Zool. 51(1): 03-34, 2023
{"title":"A Review On The Diversity Of Butterfly (Insecta: Lepidoptera) Fauna From Bangladesh","authors":"Md Monwar Hossain","doi":"10.3329/bjz.v51i1.68452","DOIUrl":"https://doi.org/10.3329/bjz.v51i1.68452","url":null,"abstract":"Butterflies are widely regarded as the most reliable bioindicators of a healthy terrestrial ecosystem. This insect belongs to the order Lepidoptera of the class Insecta and plays an important role in preserving ecological dynamics. The objective of this paper is to review the species diversity of butterflies in Bangladesh. The data is based mainly on published records and field sampling. IUCN Bangladesh (2015) evaluated the threat status of 305 species of butterflies in 2015. The overall number of butterfly species in Bangladesh is now 421, with another 116 having just been added to the IUCN-Bangladesh list. Lycaenidae has the most species (124), followed by Hesperiidae (87), Nymphalidae (79), Satyridae (35), Pieridae (36), Papilionidae (32), Danaidae (19), Riodinidae (4), Amathusiidae (4), and finally Acraeidae, which has only one species. In the present review, it is shown that the family Lycaenidae has the highest percentage of butterfly species (29.45%) among the ten families. The number of Lycaenid butterflies is influenced by various factors, one of which is their ability to inhabit a diverse array of habitats. In contrast, Danaidae account for only 4.51% species of butterflies in Bangladesh, where only one Critically Endangered (CR) and endemic taxon, Euploea crameri nicevillei (Sundarban Crow) resides. Larval host plant documentation in the Sundarbans is essential for the conservation of this species, while the molecular data (COI gene) has already been sequenced and submitted to Genbank (MH269417). Finally, the data obtained from this paper is important for future planning and management of the conservation of the butterflies and their habitat in Bangladesh. Bangladesh J. Zool. 51(1): 03-34, 2023","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
During the general surveys for eriophyoid mites in two districts namely Malda and Dakshin Dinajpur of West Bengal, India, five eriophyoid mites namely Aceria ficus (Cotte), Aceria granati (Canestrini & Massalongo), Aceria mauritianae Amrine & Stasny, Aceria nerii Channabasavanna, and Aceria lalbaghi Amrine & Stasny, were collected from four tropical plants. The host association, relationship with the host plants and their nature of damage, climatic condition of the study area, vegetative patterns of the study area and a taxonomic key to the species are provided in this article. Bangladesh J. Zool. 51(1): 55-70, 2023
{"title":"Occurrence of five species of Eriophyoid mites (Acari: Eriophyoidea) and their nature of infestation on tropical plants from northern Districts of West Bengal, India","authors":"Sanjay Sarkar","doi":"10.3329/bjz.v51i1.68656","DOIUrl":"https://doi.org/10.3329/bjz.v51i1.68656","url":null,"abstract":"During the general surveys for eriophyoid mites in two districts namely Malda and Dakshin Dinajpur of West Bengal, India, five eriophyoid mites namely Aceria ficus (Cotte), Aceria granati (Canestrini & Massalongo), Aceria mauritianae Amrine & Stasny, Aceria nerii Channabasavanna, and Aceria lalbaghi Amrine & Stasny, were collected from four tropical plants. The host association, relationship with the host plants and their nature of damage, climatic condition of the study area, vegetative patterns of the study area and a taxonomic key to the species are provided in this article. Bangladesh J. Zool. 51(1): 55-70, 2023","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ferdousi Akter, Md Nazmul Bashar, Md Aminur Rahman, Meherun Nigar Sultana, Harun Ar Rashid, Mohammad Abdur Rahman, Md Abdul Aziz
The northwest regions of Bangladesh belong to the global range of Bengal fox, Vulpes bengalensis. However, scientific information on this small canid in Bangladesh is scanty; it also remains out of any conservation initiatives, and it is widely perceived as a potential threat to local poultry. We conducted this premier study between September 2019 and December 2021. We investigated the feeding and breeding behaviour of this fox by using scat samples, direct field surveys and camera-trapping. An analysis of 67 scats yielded eight major categories of prey items consumed by the fox. Arthropods (29%) ranked top in the relative percentage of occurrence, followed by rodents (27%), plant parts (17%), and birds (13%), among the others. Ninety-two percent of scats contained multiple food items, with an average number of food items per scat of 3.50± SE 1.87. We recorded 17 den sites in and around human-dominated landscapes, of which nine den sites remained unoccupied during the entire study period. Dens used by Bengal foxes were complex, comprising interconnected tunnels and holes with an average of 23.66± SD 12.78 holes/den. We estimated a total of 37 individuals of the fox, with 62% pups in the recorded population. The average litter size was 3.36± SE 0.52 pups. We recommend further research to assess population status and delineate its range in Bangladesh. Bangladesh J. Zool. 51(1): 35-45, 2023
{"title":"Ecology Of Bengal Fox (Vulpes Bengalensis) In Northwest Bangladesh","authors":"Ferdousi Akter, Md Nazmul Bashar, Md Aminur Rahman, Meherun Nigar Sultana, Harun Ar Rashid, Mohammad Abdur Rahman, Md Abdul Aziz","doi":"10.3329/bjz.v51i1.67042","DOIUrl":"https://doi.org/10.3329/bjz.v51i1.67042","url":null,"abstract":"The northwest regions of Bangladesh belong to the global range of Bengal fox, Vulpes bengalensis. However, scientific information on this small canid in Bangladesh is scanty; it also remains out of any conservation initiatives, and it is widely perceived as a potential threat to local poultry. We conducted this premier study between September 2019 and December 2021. We investigated the feeding and breeding behaviour of this fox by using scat samples, direct field surveys and camera-trapping. An analysis of 67 scats yielded eight major categories of prey items consumed by the fox. Arthropods (29%) ranked top in the relative percentage of occurrence, followed by rodents (27%), plant parts (17%), and birds (13%), among the others. Ninety-two percent of scats contained multiple food items, with an average number of food items per scat of 3.50± SE 1.87. We recorded 17 den sites in and around human-dominated landscapes, of which nine den sites remained unoccupied during the entire study period. Dens used by Bengal foxes were complex, comprising interconnected tunnels and holes with an average of 23.66± SD 12.78 holes/den. We estimated a total of 37 individuals of the fox, with 62% pups in the recorded population. The average litter size was 3.36± SE 0.52 pups. We recommend further research to assess population status and delineate its range in Bangladesh. Bangladesh J. Zool. 51(1): 35-45, 2023","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Md Hamidur Rahaman Naim, Md Shalauddin, Durjoy Raha Antu
Abstract not available Bangladesh J. Zool. 51(1): 129-133, 2023
[摘要][j] .中国工程学报。51(1):129-133,2023 .
{"title":"Confirmatory report of Damselfly (Odonata) Pixie Dartlet, Ischnura nursei (Morton, 1907) from Bangladesh","authors":"Md Hamidur Rahaman Naim, Md Shalauddin, Durjoy Raha Antu","doi":"10.3329/bjz.v51i1.68722","DOIUrl":"https://doi.org/10.3329/bjz.v51i1.68722","url":null,"abstract":"Abstract not available Bangladesh J. Zool. 51(1): 129-133, 2023","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The two commercial household synthetic detergents were used to investigate the mortality and behavioural changes of juvenile Climbing perch (Anabas testudineus) and Stinging catfish (Heteropneustes fossilis). Average weight 2.83 ± 0.10 g and 3.93 ± 0.09g for A. testudineus and average length 3.85 ± 0.12cm and 4.33 ± 0.09cm were recorded for H. fossilis respectively. Acute toxicity tests were determined according to OECD (The Organization for Economic Cooperation and Development) guidelines for 72 hours exposure. Lethal Concentrations (LC10, LC50 and LC95) of both of the test materials were ascertained using probit analysis software (SPSS version 25) at 95% confidence limit. The LC50 values of detergent 1 were 120.4, 87.3, 59.7 mg/L for A. testudineus and 55.5, 31.6 and 24.5 mg/L for H. fossilis at 24h, 48h and 72h respectively. On the other hand, LC50 values of detergent 2 were 173.3, 90.2, 54.2 mg/L for A. testudineus and 44.8, 31.7, 22.0 mg/L for H. fossilis at 24h, 48h and 72h respectively. Toxicity was significantly increased along with exposure period for both fishes under two aquas conditions. H. fossilis was more susceptible than A. testudineus for both detergents. Comparative toxicity studies showed that detergent two was more effective than detergent one (detergent 2 ≥ detergent1). Physical changes such as discoloration in body and gill, damaged fin were also observed after 72h exposure of the both detergents. Behavioural responses in treated group were erratic swimming, restlessness, aggression, hyperactivity, more frequent movements at the bottom. Thus, adverse eco-toxicological impacts of synthetic detergents on fish mortality, behavioural pattern are suspected and suggested more elaborate research on physiological aspects for better understand the environmental impact in future. Bangladesh J. Zool. 51(1): 87-98, 2023
{"title":"Acute Toxicity of Two Detergents on the Juvenile Climbing Perch (Anabas Testudineus) And Stinging Catfish (Heteropneustes Fossilis)","authors":"Rumana Tasmin, Meherunnesa Rifa, Shamima Nasrin Zarin, Mubarak Hossain, Md Abdur Rahim","doi":"10.3329/bjz.v51i1.68659","DOIUrl":"https://doi.org/10.3329/bjz.v51i1.68659","url":null,"abstract":"The two commercial household synthetic detergents were used to investigate the mortality and behavioural changes of juvenile Climbing perch (Anabas testudineus) and Stinging catfish (Heteropneustes fossilis). Average weight 2.83 ± 0.10 g and 3.93 ± 0.09g for A. testudineus and average length 3.85 ± 0.12cm and 4.33 ± 0.09cm were recorded for H. fossilis respectively. Acute toxicity tests were determined according to OECD (The Organization for Economic Cooperation and Development) guidelines for 72 hours exposure. Lethal Concentrations (LC10, LC50 and LC95) of both of the test materials were ascertained using probit analysis software (SPSS version 25) at 95% confidence limit. The LC50 values of detergent 1 were 120.4, 87.3, 59.7 mg/L for A. testudineus and 55.5, 31.6 and 24.5 mg/L for H. fossilis at 24h, 48h and 72h respectively. On the other hand, LC50 values of detergent 2 were 173.3, 90.2, 54.2 mg/L for A. testudineus and 44.8, 31.7, 22.0 mg/L for H. fossilis at 24h, 48h and 72h respectively. Toxicity was significantly increased along with exposure period for both fishes under two aquas conditions. H. fossilis was more susceptible than A. testudineus for both detergents. Comparative toxicity studies showed that detergent two was more effective than detergent one (detergent 2 ≥ detergent1). Physical changes such as discoloration in body and gill, damaged fin were also observed after 72h exposure of the both detergents. Behavioural responses in treated group were erratic swimming, restlessness, aggression, hyperactivity, more frequent movements at the bottom. Thus, adverse eco-toxicological impacts of synthetic detergents on fish mortality, behavioural pattern are suspected and suggested more elaborate research on physiological aspects for better understand the environmental impact in future. Bangladesh J. Zool. 51(1): 87-98, 2023","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract not available Bangladesh J. Zool. 51(1): 01-02, 2023
[摘要]孟加拉J. Zool. 51(1): 01-02, 2023
{"title":"Building Strong Multidimensional Biodiversity Science and Sustainability","authors":"Md Niamul Naser","doi":"10.3329/bjz.v51i1.68468","DOIUrl":"https://doi.org/10.3329/bjz.v51i1.68468","url":null,"abstract":"Abstract not available Bangladesh J. Zool. 51(1): 01-02, 2023","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135202650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study aimed to measure the prevalence of intestinal parasites among children with gastrointestinal tract infections from different slum areas of Dhaka. Furthermore, a comparison was made of the accuracy of direct smear (DS) and formol-ether concentration (FEC) techniques in the detection of infection. The overall prevalence of parasitic infection was 72.46% with a combined method. By direct smear, 2 species of protozoa (11.59%), 2 species of cestode (5.07%) and 4 species of nematode (18.12%) parasites were detected whereas by formol – ether concentration method, 5 species of protozoa (28.26%), 1 species of Trematode (1.44%), 2 species of cestode (17.39%) and 5 species of nematode (79.71%) parasites were detected. By direct smear (DS) and formol-ether concentration (FEC) the prevalence of intestinal parasites was 42% and 58% respectively. Ascaris lumbricoides was the most common parasite detected by both formol-ether concentration (37.68%) and direct smear method (7.97%). A statistically significant association (P < 0.001) was found between the test methods, age groups and months with parasitic infection. Direct smear showed less sensitivity than formol-ether concentration technique (100%). The diagnostic performance of formol-ether technique for the diagnosis of intestinal parasites in slum children was remarkably higher as related to direct smear in the present study. Therefore, the DS and FEC combined techniques should be used as routine investigative techniques for the identification of intestinal parasites. Henceforth, it is advantageous to use the formol-ether method to complement the direct smear method. Bangladesh J. Zool. 50(3): 353-361, 2022
{"title":"Prevalence of Gastrointestinal Parasites in Slum Children of Dhaka City: Comparison of Two Coprological Methods","authors":"A. Hosna, H. Khanum","doi":"10.3329/bjz.v50i3.65541","DOIUrl":"https://doi.org/10.3329/bjz.v50i3.65541","url":null,"abstract":"The present study aimed to measure the prevalence of intestinal parasites among children with gastrointestinal tract infections from different slum areas of Dhaka. Furthermore, a comparison was made of the accuracy of direct smear (DS) and formol-ether concentration (FEC) techniques in the detection of infection. The overall prevalence of parasitic infection was 72.46% with a combined method. By direct smear, 2 species of protozoa (11.59%), 2 species of cestode (5.07%) and 4 species of nematode (18.12%) parasites were detected whereas by formol – ether concentration method, 5 species of protozoa (28.26%), 1 species of Trematode (1.44%), 2 species of cestode (17.39%) and 5 species of nematode (79.71%) parasites were detected. By direct smear (DS) and formol-ether concentration (FEC) the prevalence of intestinal parasites was 42% and 58% respectively. Ascaris lumbricoides was the most common parasite detected by both formol-ether concentration (37.68%) and direct smear method (7.97%). A statistically significant association (P < 0.001) was found between the test methods, age groups and months with parasitic infection. Direct smear showed less sensitivity than formol-ether concentration technique (100%). The diagnostic performance of formol-ether technique for the diagnosis of intestinal parasites in slum children was remarkably higher as related to direct smear in the present study. Therefore, the DS and FEC combined techniques should be used as routine investigative techniques for the identification of intestinal parasites. Henceforth, it is advantageous to use the formol-ether method to complement the direct smear method.\u0000Bangladesh J. Zool. 50(3): 353-361, 2022 ","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78971735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mosquito diversity, abundance, density, and habitats were studied at four selected breeding areas in Dhaka city from December 2015 to April 2016. A total of 3214 individuals of 10 mosquito species belonging to 3 genera namlely Culex (7spp.), Aedes (2spp.), and Anopheles (1sp.) were documented during the study period. The Cx. quinquefasciatus (37.83%) was found the highest in number followed by Cx. vishnui (16.74%), Cx. tritaeniorhynchus (16.21%), Cx. gelidus (9.40%), Cx. hutchinsoni (9.12%), Cx. fuscocephala (2.77%), Cx. vagans (2.21%), Ae. aegypti (3.17%), An. annularis (2.77%), and Ae. albopictus (1.15%). Maximum number of mosquitoes were found in Hazaribagh (1178 individuals), followed by Badda (1128 individuals), Demra (594 individuals), and Sutrapur (314 individuals). Mosquitoes were plentiful in March, regardless of species distribution which was influenced by rainfall and the lowest was in February. Eighteen different habitats of the mosquitoes were identified. The Simpson’s Index (λ= 0.18) and Shanon’s Diversity Index (H′= 1.93) indicated maximum mosquito diversity at Demra thana where species richness was 3.24. However, the Sutrapur thana (λ= 0.34, H′ =1.34) was minimum in which species richness had 2.40. The Species Evenness in the Demra thana (J′= 0.84) indicated that the species were evenly distributed whereas the Sutrapur thana (J′= 0.69) was comparatively less evenly distributed. The highest Community Dominance was 76.11% for the Sutrapur and the lowest was 49.66% for the Demra. Sorenson's Coefficient (CC) was 0.76 indicating that there was considerable overlap or similarity across the four communities. Bangladesh J. Zool. 50(3): 337-352, 2022
{"title":"Diversity, Abundance, Density and Habitat Characterization of Mosquitoes in Dhaka, Bangladesh","authors":"Md. Aminul Islam, F. Zohora, Md Nasifur Rahman","doi":"10.3329/bjz.v50i3.65540","DOIUrl":"https://doi.org/10.3329/bjz.v50i3.65540","url":null,"abstract":"Mosquito diversity, abundance, density, and habitats were studied at four selected breeding areas in Dhaka city from December 2015 to April 2016. A total of 3214 individuals of 10 mosquito species belonging to 3 genera namlely Culex (7spp.), Aedes (2spp.), and Anopheles (1sp.) were documented during the study period. The Cx. quinquefasciatus (37.83%) was found the highest in number followed by Cx. vishnui (16.74%), Cx. tritaeniorhynchus (16.21%), Cx. gelidus (9.40%), Cx. hutchinsoni (9.12%), Cx. fuscocephala (2.77%), Cx. vagans (2.21%), Ae. aegypti (3.17%), An. annularis (2.77%), and Ae. albopictus (1.15%). Maximum number of mosquitoes were found in Hazaribagh (1178 individuals), followed by Badda (1128 individuals), Demra (594 individuals), and Sutrapur (314 individuals). Mosquitoes were plentiful in March, regardless of species distribution which was influenced by rainfall and the lowest was in February. Eighteen different habitats of the mosquitoes were identified. The Simpson’s Index (λ= 0.18) and Shanon’s Diversity Index (H′= 1.93) indicated maximum mosquito diversity at Demra thana where species richness was 3.24. However, the Sutrapur thana (λ= 0.34, H′ =1.34) was minimum in which species richness had 2.40. The Species Evenness in the Demra thana (J′= 0.84) indicated that the species were evenly distributed whereas the Sutrapur thana (J′= 0.69) was comparatively less evenly distributed. The highest Community Dominance was 76.11% for the Sutrapur and the lowest was 49.66% for the Demra. Sorenson's Coefficient (CC) was 0.76 indicating that there was considerable overlap or similarity across the four communities.\u0000Bangladesh J. Zool. 50(3): 337-352, 2022 ","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82270196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Md. Aminul Islam, Shohag Ahmmed, Md Abdul Alim, F. Zohora
Freshwater lakes are a crucial component of the urban ecology and offer several direct and indirect advantages to its people. Habitat degradation of native insects has happened because of development activities and unscientific natural resource management. As a consequence, many insects of freshwater lakes are now rare and endangered. A research was conducted to find out the abundance, variety and distribution of aquatic insect fauna in an urban freshwater lake, Hatirjheel, Dhaka during November 2015 to February 2016. A total of 3255 individuals of water insects comprising of 11 species and 31 genera under 20 families belonging 5 orders were recorded. The order Hemiptera contained the highest abundance (38.71%) including 7 families and 12 genera containing 5 species, while Trichoptera had the lowest (6.45%) including 2 families and 2 genera. The dominating species in the lake was Micronecta haliploides. The maximum 19 aquatic insect species were reported in the lake's vegetation-rich section near the Mouchak-Moghbazar flyover (Spot 1), whereas a minimum of 5 species were found near the Modhubagh bridge road (Spot 2). Species diversity index (H′ = 2.74), species richness (SR = 8.54), aquatic insect distribution evenness (J′ = 0.80), community dominance (CD = 46.94%), and Simpson’s index (λ = 0.17) were analyzed in this study to determine the diversity, abundance, distribution and dominance of aquatic insect fauna in this lake. Bangladesh J. Zool. 50(3): 363-372, 2022
{"title":"Diversity and Abundance of Aquatic Insect Fauna in an Urban Freshwater Lake, Hatirjheel, Dhaka, Bangladesh","authors":"Md. Aminul Islam, Shohag Ahmmed, Md Abdul Alim, F. Zohora","doi":"10.3329/bjz.v50i3.65542","DOIUrl":"https://doi.org/10.3329/bjz.v50i3.65542","url":null,"abstract":"Freshwater lakes are a crucial component of the urban ecology and offer several direct and indirect advantages to its people. Habitat degradation of native insects has happened because of development activities and unscientific natural resource management. As a consequence, many insects of freshwater lakes are now rare and endangered. A research was conducted to find out the abundance, variety and distribution of aquatic insect fauna in an urban freshwater lake, Hatirjheel, Dhaka during November 2015 to February 2016. A total of 3255 individuals of water insects comprising of 11 species and 31 genera under 20 families belonging 5 orders were recorded. The order Hemiptera contained the highest abundance (38.71%) including 7 families and 12 genera containing 5 species, while Trichoptera had the lowest (6.45%) including 2 families and 2 genera. The dominating species in the lake was Micronecta haliploides. The maximum 19 aquatic insect species were reported in the lake's vegetation-rich section near the Mouchak-Moghbazar flyover (Spot 1), whereas a minimum of 5 species were found near the Modhubagh bridge road (Spot 2). Species diversity index (H′ = 2.74), species richness (SR = 8.54), aquatic insect distribution evenness (J′ = 0.80), community dominance (CD = 46.94%), and Simpson’s index (λ = 0.17) were analyzed in this study to determine the diversity, abundance, distribution and dominance of aquatic insect fauna in this lake.\u0000Bangladesh J. Zool. 50(3): 363-372, 2022 ","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79311259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Sarker, Sana Ahmed, S. Mitra, Prosenjit Pramanick, S. Zaman, A. Mitra
We monitored the Condition Index (CI) of Labeo rohita, which is an important indicator to evaluate the health and well-being of the cultured fish. In this pilot project, we initiated the culture with Labeo rohita as a candidate species in 12 rain water stocked ponds at Diamond Harbour during March, 2022 to October, 2022 and computed monthly condition index considering the mean weight and length of the cultured species (n = 65 for each pond). Simultaneously we measured the relevant hydrological parameters like surface water temperature, Dissolved Oxygen (DO), surface water pH, dissolved NO3, PO4 and SiO3 for all the ponds. We observed significant positive correlations of CI with surface water temperature, DO, and surface water pH, and significant negative correlations with dissolved NO3 and PO4. The results reveal the use of CI of Labeo rohita as proxy to well-being of the species. Bangladesh J. Zool. 50(3): 309-319, 2022
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