Fine-scale population structure and ecotypes of anadromous Hilsa shad (Tenualosa ilisha) across complex aquatic ecosystems revealed by NextRAD genotyping

The anadromous Hilsa shad (Tenualosa ilisha) live in the Bay of Bengal and migrate to the estuaries and freshwater rivers for spawning and nursing of the juveniles. This has led to two pertinent questions: (i) do all Hilsa shad that migrate from marine to freshwater rivers come from the same population? and (ii) is there any relationship between adults and juveniles of a particular habitat? To unravel the answers of the above two questions, the present study was conducted by identifying a set of neutral and adaptive genetic markers.

Socioeconomic characteristics of hilsa fishers in the Ayeyarwady Delta, Myanmar: Opportunities and challenges

The Darwin-Hilsa project is developing an incentivebased system of hilsa fisheries management in Myanmar’s Ayeyarwady Delta. This study uses a mixed-methods approach to assess the socioeconomic status of local fishing households. Many are extremely vulnerable, owing to the seasonal nature of fishing and unpredictable flows of income. Coping strategies include informal loans, livelihood diversification, and migration, while many flout fishing restrictions to cover costs and repay loans.

Spawning seasonality of hilsa (Tenualosa ilisha) in Myanmar's Ayeyarwady Delta

The hilsa is a critically important species for smallscale fishing communities in Myanmar’s Ayeyarwady Delta and Rakhine State. Yet current fishing regulations are inadequate and exploitation rates are well beyond sustainable levels. This study analyses key parameters underlying hilsa biology, comparing them across different ecological zones of the hilsa’s range in Myanmar and across time. It provides evidence of major spawning activity between July and September in the freshwater zone, particularly in September.

National Fish Week Bangladesh 2019

The 27th “National Fish Week-2019 is being observed across Bangladesh 18-24 July 2019. This special week entirely dedicated to fish is an existing opportunity to raise awareness and encourage individuals and fish farming communities to practice sustainable fish farming, better-manage natural resources while helping prevent the extinction of various species of indigenous fish.

Catch trend and stock assessment of Hilsa Tenualosa ilisha using digital image measured length-frequency data

In the present study, digital imaging was used to measure length-frequency data from all major migratory habitats of Hilsa. This investigation appears to be the first to generate information using this technique regarding population dynamics and stock status of Hilsa, and subsequently, a guideline for using this method was developed. This is also the first time that the spatial and temporal size composition of Hilsa in sanctuary, nonsanctuary, and marine habitats were also compared.

Productivity and coastal fisheries biomass yields of the northeast coastal waters of the Bay of Bengal Large Marine Ecosystem

This paper describes the current marine fisheries situation in the northeast sector of the Bay of Bengal, ninety percent of which corresponds to Myanmar's EEZ and ten percent to Bangladesh. With the exception of the research carried out by the fisheries research vessel Fridtjof Nansen, the Myanmar sector is largely data deficient due to political reasons.

Conserving hilsa and building livelihoods in Bangladesh

In Bangladesh, many poor fishers struggle to cope during the government-imposed hilsa fishing ban. Boosting the resilience of the communities whose livelihoods depend on hilsa (also known as ilish), the national fish of Bangladesh, is therefore the goal of the USAID-funded Enhanced Coastal Fisheries in Bangladesh (ECOFISH Bangladesh) project. Since 2014, the project has established 280 hilsa conservation groups in 81 villages, and is training women in new livelihood activities such as vegetable gardening.

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