Iren Naher

Social Safeguard Unit, Design Development Consultant, Dhaka, Bangladesh

To achieve the targets of Vision 2041, the improvement of the transport networks must be a priority to overcome the existing river barriers and effectively connect the various regions of the country. The construction of bridges plays a key role in the transport policy as well as in the development of the country. Different roads in different regions of the country and bridges of different lengths on different rivers specially on Meghna has been proposed. Different literature study has established the fact that constructions of the new bridges have negative as well as positive social impacts. In this paper efforts has been made to analyse the negative and positive social impacts of a bridge over branch of Meghna river connecting the two upazilas where is only mode of transportation is by means of mechanised boat. High positive impacts will help to achieve the Sustainable Development Goals (SDGs) of Government of Bangladesh and it will enhance the quality of life of the people in the region.

Keywords: Bridge , Social Impact, Sustainable, Vision 2041, SDG.

Corresponding author.
E-mail address: trisna406@gmail.com (I Naher)

How to cite this article: Naher I (2023). Analysis of social impacts of a proposed bridge over Meghna River. International Journal of Natural and Social Sciences, 10(1): 01-09. DOI: 10.5281/zenodo.8219840.

Mst. Jannatul Ferdous¹, Nasima Begum², Rasel Mia³, Ashikur Rahman Shrabon³, Sabrina Jannat Mitu⁴

¹Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh
²Scientific Officer, Bangladesh Fisheries Research Institute, Bangladesh
³Department of Aquatic Resource Management, Sylhet Agricultural University, Sylhet-3100, Bangladesh
⁴Department of Coastal and Marine Fisheries, Sylhet Agricultural University, Sylhet-3100, Bangladesh

A study on the checklist of the native fishes of the Monoi River and adjacent waters was carried out to obtain details on present status and trend of finfish diversity. Data were collected monthly by field survey, focus group discussions, and personal interviews using a semi-structured questionnaire during November 2019 to March 2020. A total of 57 indigenous fish species belonging to 22 families under 10distinct taxonomic orders were documented where Cypriniformes (31.58%) contributes the highest and Tetraodontiformes (1.75%) contribute the lowest. Among the 22 recorded families Cyprinidae occupies highest 18 fish species. In the IUCN Bangladesh (2015) report, approximately 71.92%, were classified as having the least concern (LC), near threatened 8.77%, 12.28% of the total, had not undergone evaluation (NE) and 7.01% were vulnerable (VU).The leading threats to fish diversity were indiscriminate overfishing, followed by fishing by dewatering wetlands, the katha fishing method, the use of deprecated fishing gear, etc. The study suggests that minimising anthropogenic impacts, enacting fishing laws, installing and managing fish sanctuaries, and raising public awareness can be effective for the conservation of existing fisheries resources.

Keywords: Biodiversity Reduction, Species Availability, Threatened Species, Conservation.

Corresponding author.
E-mail address: ferdousmj.fbg@sau.ac.bd (M J Ferdous)

How to cite this article: Ferdous MJ, Begum N, Mia R, Shrabon AR and Mitu SJ (2023). Biodiversity status of the Monoi River and Choilchapra Beel, Sunamganj, Bangladesh. International Journal of Natural and Social Sciences, 10(1): 10-18. 10.5281/zenodo.8332581.

Afroza Islam Lipi, Afroza Sultana Jannat

Department of Local Government and Urban Development, Jatiya Kabi Kazi Nazrul Islam University, Trishal, Mymensingh

Violence against women is not a new phenomenon, nor it is limited to a particular culture, region, or civilization. Many women work outside the home to support their families and rely on public transportation to go around. Many school, college and university going girls even many housewives also use public transport to go their destination. Women’s engagement in various sectors causes them to commute frequently. In Bangladesh, harassment in public transport is very common issue. This study aims to quantify the frequency of harassment experienced by female students of school, college and university, housewives and working women, different forms of harassment, as well as the perception and reasons of harassment against respondents. Women expect to feel safe, secure, and comfortable when using public transport. In this study, literature review, Interview, questionnaire survey and FGD have been conducted to collect information. The result of the study shows that about 95% of women including working women, house-wife and students experienced harassment in public transportation in Mymensingh city. Additionally, this study presents several expected solutions provided by the respondents.

Keywords: Women, Harassment, Public Transport.

Corresponding author.
E-mail address: afrozaislamlipi@gmail.com (A I Lipi)

How to cite this article: Lipi AI and Jannat AS (2023). Experience of harassment in public transport among female passengers in Mymensingh city. International Journal of Natural and Social Sciences, 10(1): 19-26. DOI: 10.5281/zenodo.10022515.

Fariha Rahate Shebli, Fowzia Sultana, Md. Shahidur Rahman

Department of Poultry science, Bangladesh Agricultural University, Mymensingh-2202

An experiment was conducted with Wild Japanese quail (Coturnix coturnix japonica) to find out the best dose of the supplementation of dietary selenium (Se) and evaluate its effects on reproductive performance and egg quality traits. Initially, a 2-week trial of dietary Se supplementation with 0, 0.02, 0.2, 2 and 20 mg/kg feed was performed on 48 quail (36 laying females and 12 adult males). There were 3 males and 6 females under a dietary treatment group those had been housed in a pen of 1 male 2 females as a replication. Under standard management and feeding regime, 2mg/kg feed supplementation of Se was found to be the best dose of highest combined performance index (CPI). Upon selecting the best dose, the supplementation was continued to the similar birds for further 5-week period. During the extended period, an increased rate of egg production along with higher egg weight and shell weight was observed in the Se supplemented group compared to the control. A decrease in fertility rate and some other egg quality parameters were noticed at the terminal week of supplementation. However, Se supplementation during further 5-week period had no effect on yolk weight. Current findings suggested that none of the doses of the Se supplementation to laying quail for short-period excel a single trait but achieve the higher CPI, but longer period supplementation can negatively impact the reproductive trait. Therefore, the duration of a single dose of Se supplementation in laying Japanese quail needs consideration on purposes.

Keywords: Japanese quail, Egg quality, Combined performance Index, Selenium supplementation.

Corresponding author.
E-mail address: sheblibau@gmail.com (F R Shebli)

How to cite this article: Shebli FR, Sultana F and Rahman MS (2023). Effects of organic selenium on productive and reproductive traits of Japanese quail vary on the length of dietary exposure. International Journal of Natural and Social Sciences, 10(1): 27-37. DOI: 10.5281/zenodo.10029072.

Louis Dossou MAGBLENOU¹, Justin KANTOUSSAN¹, César BASSENE², Dieynaba Yacine Mar GUEYE¹, Hamath SY¹

¹Laboratoire des Sciences Biologiques, Agronomiques et de Modélisation des Systèmes Complexes (LaBAM),UFR des Sciences Agronomiques, de l’Aquaculture et des Technologies Alimentaires (UFR S2ATA), DépartementAquaculture, Université Gaston Berger (UGB),BP. 234 Route de Ngallèle, Saint-Louis, Sénégal

²Laboratoire des Sciences Biologiques, Agronomiques et de Modélisation des Systèmes Complexes (LaBAM),UFR des Sciences Agronomiques, de l’Aquaculture et des Technologies Alimentaires (UFR S2ATA), Département Productions Végétales et Agronomie (PVA), Université Gaston Berger (UGB),BP. 234 Route de Ngallèle, Saint-Louis, Sénégal.

The present study is part of the revalorization of water drained from the aquaculture ponds of Tilapia (Oreochromis niloticus) farms on the culture of okra, Abelmoschus esculentus var. Clemson spineless. The experimentation was carried out in the agricultural farm of the Gaston Berger University (Senegal) on elementary plots of 3m x 1,5m. The effects of water drained from ponds rearing Tilapia (DWT) on okra production are estimated by comparing them with those of the fertilizers currently used in agronomy such as poultry droppings (PD), cow dung (CD) and mineral fertilizer (NPK). The plots were in triplicate for each treatment. The treatments were done with river water (RW), RW+ recommended dose of NPK (RD-NPK), RW+RD-PD, RW+ RD-CD, DWT, DWT+25% RD-NPK, DWT+50% RD-NPK, DWT+75% RD-NPK, DWT+25% RD-PD, DWT+50% RD-PD, DWT+75% RD-PD, DWT+25% RD-CD, DWT+50% RD-CD, DWT+75% RD-CD. The growth parameters, phenology and yield of okra were determined. The results showed that the mean collar diameter of treatment T₄ (DWT = 1.5±0.6cm) was comparable to that of treatments T₂ (RW+RD-PD = 1.8±0.8cm), T₃ (RW+RD-CD = 1.5±0.7cm) and T₅ (25% RD NPK = 1.7±0.8cm). However, treatments with at least 50% RD-NPK gave higher collar diameters than T₄. For average plant height, T₄ gave the same growth performance as T₂, T₃ and all treatments with NPK at lower than the recommended dose. The average plant height of treatment T1 (RW+RD-NPK) with 62±32cm was higher compared to T₄ (44±26.4cm). As for the yield parameters, diameter, length and average weight of okra fruit, treatments T₁ (RD-NPK), T₂ (RD-PD), T₃ (RD-CD) and T₄ (DWT) gave comparable results. Treatment T₄ with 11.0±5.5 t. ha^-1 gave the same yield performance as treatment T₁=10.8±5.4 t. ha^-1 and a higher yield than treatments T₃=7.5±3.8 t. ha^-1 and T₂=5.7±2.9 t. ha^-1.

Keywords: Integrated aquaculture, pond rearing water, fertilization, okra production.

Corresponding author.
E-mail address: justin.kantoussan@ugb.edu.sn (J KANTOUSSAN)

How to cite this article: MAGBLENOU LD, KANTOUSSAN J, BASSENE C, GUEYE DYM and SY H (2023). Effects of water drained from ponds rearing Tilapia on okra production. International Journal of Natural and Social Sciences, 10(1): 38-49 DOI: 10.5281/zenodo.10042453.