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In recent years, attaining gonadal maturation in smaller Hilsa (Tenualosa ilisha) has become a burning issue for Hilsa fishery of Bangladesh. Causes of early maturation are not yet clearly understood. Along with environmental parameters, genetic differentiation within the population was hypothesized as the main driver, and therefore, assessing the correlation between gonadosomatic index (GSI) and environmental factors and analyzing genetic diversity were set as objectives of the present study. To address these complex issues, six diverse habitats across Bangladesh were chosen for Hilsa sample collection. For GSI, gonad was dissected from fresh fish and preserved in Bouin's fluid for histological observation. Water quality parameters such as temperature, dissolved oxygen, pH, and salinity were also assessed. 35 fish from each habitat were used to extract and amplify DNA through the PCR technique, and genetic diversity was examined. Further, to draw a firm conclusion, the phylogenetic tree of the Hilsa population was developed by the unweighted pair-group method of arithmetic mean method based on the Cyt b gene of mitochondrial DNA. Results of GSI studies revealed that peak spawning months of T. ilisha were in October and February, where October showed the highest values in all six habitats. Histological examination showed different stages of gonadal development in different sizes and ages of Hilsa. Among all sampling sites, no statistical difference was observed for GSI value; however, smaller sized and aged Hilsa being ripped were evident in Gaglajur Haor and Kali River. Among the observed water quality parameters, temperature correlated with GSI strongly. Increased GSI was observed with temperature augmentation from downstream to upper stream, irrespective of body size and age. A perplex correlation between dissolved oxygen of observed habitats and GSI was executed. Other physico-chemical parameters viz. pH and salinity exhibited weak and moderate positive associ

In Bangladesh, fishing communities are one of the most climate-vulnerable groups, though they play an important role in economic development. The main objective of this study was to identify vulnerability by exploring exposure (i.e., lack of regulating services or household capitals), susceptibility (i.e., lack of access to provisioning services), and lack of resilience (i.e., lack of alternative livelihoods and capacity) and to explore adaptation options, and challenges to understand risk governance. The study considered 45 published research articles for analysis following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Keywords were used in combinations (e.g., fishing communities and Bangladesh) to identify and screen published articles. Articles published in English focusing on vulnerability and/or risk governance, published between 2011 and 2022, featuring original empirical data or a comprehensive systematic review, and published in peer-reviewed journals were included. Articles were excluded if vulnerability and risk governance were evaluated but did not fit or match the definition used in this study. The study found frequent disasters and ocean warming caused different stresses, such as reduced fish catch and income, and resulted in an increased risk of fisheries conflict. Moreover, fishing communities have limited access to properties, modern fishing equipment, financial institutions, and fisher-centered organizations. Adaptation strategies include ecosystem-based (e.g., plantation, payment for ecosystem services) and non-ecosystem-based (e.g., temporary migration, getting help from neighbors) approaches. To boost fish production, the Government of Bangladesh instituted fishing restrictions and social safety net programs (e.g., distributing rice during the fishing restrictions); both initiatives were helpful. However, the conservation policies are not being implemented properly, and there is no particular social welfa

Bangladesh coal plant threatens World Heritage mangrove: petition.

Bangladesh coal plant threatens World Heritage mangrove: petition.

Fisheries bycatch is known as the major threat to Threatened shark species (herein, sharks, skates, and rays) in Bangladesh. But bycatch is not appropriately addressed under the existing wildlife and fisheries conservation management regime. This policy brief evaluates the current scenario of shark conservation and identifies priorities for future interventions. The literature review finds 71 shark species and only four peer-reviewed publications from Bangladesh suggesting the species already known have not yet been studied. In addition, inconsistencies in legal frameworks have limited the capacities and mandates of responsible government agencies. We recommend actionable changes in policy to regulate shark trade, reduce bycatch of Threatened species, improve fisheries data reporting system, and bring consistency between institutional mandate and the capacity of conservation and management agencies.

In recent years, shoreline determination has become an issue of increasing importance and concern, especially at the local level, as sea level continues to rise. This study identifies the rates of absolute and net erosion, accretion, and shoreline stabilization along the coast of Kuakata, a vulnerable coastal region in south-central Bangladesh. Shoreline change was detected by applying remote sensing and geographic information system (RS-GIS)-based techniques by using Landsat Thematic Mapper (TM), Landsat 8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) satellite images at 30-m resolution from 1989, 2003, 2010, and 2020. The band combination (BC) method was used to extract the shoreline (i.e., land-water boundary) due to its improved accuracy over other methods for matching with the existing shoreline position. This study also used participatory rural appraisal (PRA) tools which revealed the societal impacts caused by the shoreline changes. Coupling RS-GIS and PRA techniques provides an enhanced understanding of shoreline change and its impacts because PRA enriches the RS-GIS outcomes by contextualizing the findings. Results show that from 1989 to 2020, a total of 13.59 km2 of coastal land was eroded, and 3.27 km2 of land was accreted, suggesting that land is retreating at about 0.32 km2 yr-1. Results from the PRA tools support this finding and demonstrate that fisheries and tourism are affected by the shoreline change. These results are important in Kuakata, a major tourist spot in Bangladesh, because of the impacts on fisheries, recreation, resource extraction, land use planning, and coastal risk management.

It's too early to talk about climate change refugees in Bangladesh.

Bangladesh: la mangrove en péril.

On the climate change frontline: the disappearing fishing villages of Bangladesh #GlobalWarning.

The Bangladesh shrimp farmers facing life on the edge.

Pentagon asked to expand maritime security to include Bangladesh.

'MOLLAH's life was typical': the deadly ship graveyards of Bangladesh.

The Unfolding Tragedy of Climate Change in Bangladesh.

Cyclonic Storm Mora threatens to flood Bangladesh, northeastern India

Protests as Bangladesh slaps two-month ban on shallow-water fishing.

At least nine dead as monster cyclone enters Bangladesh.

Children take the lead in cyclone early warnings in Bangladesh.

Preventing bycatch of threatened marine megafauna is a challenging task, writes Brian D. SMITH from the Wildlife Conservation Society (WCS), an SOS-Save Our Species grantee, in the Bay of Bengal, Bangladesh. Early one morning WCS researcher Rubaiyat Mansur received a phone call. It was from Sonjoy Kumar DASH, one of the gillnet fishing captains participating in … ↓ Read the rest of this entry...

Preventing bycatch of threatened marine megafauna is a challenging task, writes Brian D. SMITH from the Wildlife Conservation Society (WCS), an SOS-Save Our Species grantee, in the Bay of Bengal, Bangladesh. Early one morning WCS researcher Rubaiyat Mansur received a phone call. It was from Sonjoy Kumar DASH, one of the gillnet fishing captains participating in … ↓ Read the rest of this entry...

Researchers investigate riverbank erosion and resilience in coastal Bangladesh.

Myanmar navy escorting boat with 727 migrants to Bangladesh waters: minister.

Bangladesh bans fishing for 65 days to save fish.