Article
Marine & Freshwater Biology
Joseph G. Schnitzler, Krishna Das, Peter Wohlsein, Thijs Kuiken, Arne Ludwig, Dietmar Lieckfeldt, Channa Phan, Somany Phay, Ursula Siebert
Summary: The investigation into the subpopulation of Irrawaddy dolphins in the Mekong River in Cambodia revealed that these dolphins are critically endangered and genetically distinct from other populations. Pathological findings showed various health issues, while residue levels of pollutants in their bodies were generally lower compared to other cetaceans in Asia, except for Dichlorodiphenyltrichloroethane. However, a high percentage of organic mercury was observed, which may negatively impact the dolphins' health.
AQUATIC TOXICOLOGY
(2021)
Article
Environmental Sciences
Gregory M. Verutes, Sarah E. Tubbs, Nick Selmes, Darren R. Clark, Peter Walker, Oliver Clements
Summary: This study conducted seasonal habitat models for Irrawaddy dolphins in the Kep Archipelago based on environmental data and species occurrences, revealing their habitat preferences and distribution. The results can guide regional conservation efforts by taking into account the seasonality of the species.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Engineering, Marine
Nurlisa Azizul, Saifullah Arifin Jaaman, Farah Dayana Haji Ismail, Azmi Marzuki Muda, Xuelei Zhang, Hairul Masrini Muhamad, Mohammad Vol Momin, Bohari Abdullah
Summary: This research examined the water surface behavior of Irrawaddy dolphins in the Bay of Brunei and found that feeding behavior was dominant and correlated with depth and water quality.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Marine & Freshwater Biology
Alla M. Mass, Alexander Ya Supin
Summary: The topographic distribution of retinal ganglion cells was investigated in an Irrawaddy dolphin. Two areas of increased cell concentration were observed in the retina, with giant cells representing 8% of the total population. These findings suggest that the presence of concentrated ganglion cells may be associated with the optical properties of the dolphin's habitat.
Article
Biochemistry & Molecular Biology
Yufei Dai, Rachawadee Chantra, Kongkiat Kittiwattanawong, Liyuan Zhao, Watchara Sakornwimon, Reyilamu Aierken, Fuxing Wu, Xianyan Wang
Summary: Genetic analysis revealed significant genetic differentiation among populations of the Irrawaddy dolphin in different regions of Thailand, likely influenced by geographical distribution patterns, environmental factors, anthropogenic factors, and local adaptations.
GENETICS AND MOLECULAR BIOLOGY
(2021)
Article
Environmental Studies
Molly Scott, Edward Cardona, Kaylee Scidmore-Rossing, Mark Royer, Jennifer Stahl, Melanie Hutchinson
Summary: Changes to fishing gear configurations have the potential to decrease injury and mortality for non-target species in commercial fisheries. This two-part study found that switching from wire to monofilament leaders can reduce shark catch rates while maintaining catch rates of target species, and that monofilament leaders are more durable than wire leaders after soaking.
Article
Multidisciplinary Sciences
Farah Dayana Haji Ismail, Nurlisa Azizul, Saifullah Arifin Jaaman, Azmi Marzuki Muda, Mohd Vol Momin, Bohari Abdullah, Xuelei Zhang, Hairul Masrini Muhamad
Summary: During the survey period, 49 groups of Irrawaddy dolphins were found in the Bay of Brunei, including 13 groups with calves. The average group size of dolphins was 4.5 individuals, and there was no statistically significant difference in the number of sightings between four different monsoon seasons.
Article
Environmental Sciences
Yanzhi Li, Tao Qin, Ye Yint Tun, Xiaoyong Chen
Summary: This study examines fish communities in the Irrawaddy River system and establishes conservation strategies based on fish diversity, human impact, and environmental change, highlighting the importance of the delta and Manipur basin regions as key areas for future fish conservation efforts. Connectivity in the main stem of the river system is also emphasized for conservation purposes. The results of this study provide valuable insights for the future management of the Irrawaddy basin and can serve as a reference for protection strategies in other river basins.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Engineering, Environmental
Patrick Smallhorn-West, Jan van der Ploeg, Delvene Boso, Meshach Sukulu, Janet Leamae, Mathew Isihanua, Martin Jasper, Janet Saeni-Oeta, Margaret Batalofo, Grace Orirana, Alick Konamalefo, Jill Houma, Hampus Eriksson
Summary: Coastal fisheries play a critical role in Pacific island food systems, supporting village economies and providing nutritious aquatic foods. This study used data from fishing trips in the Solomon Islands to create fisheries signatures for different communities and suggest suitable management recommendations. The results highlight the importance of considering local environmental characteristics for effective fisheries management.
Article
Fisheries
Emer Rogan, Andrew J. Read, Per Berggren
Summary: By-catch poses the primary global threat to populations of dolphins and porpoises, and the European Union should adopt a comprehensive plan to protect these species, including regular assessments of population numbers, setting management goals, and controlling by-catch mortality.
FISH AND FISHERIES
(2021)
Article
Fisheries
Rachel F. Ainsworth, Ian G. Cowx, Simon J. Funge-Smith
Summary: Inland waters support the livelihoods of up to 820 million people and contribute significantly to global food security. However, inland fisheries are often overlooked and face challenges such as climate change and habitat loss, hindering their sustainable management.
FISH AND FISHERIES
(2023)
Article
Environmental Sciences
Tamoghna Acharyya, Bikram Prativa Sudatta, Dutikeshwar Ballav Das, Suchismita Srichandan, Sanjiba Kumar Baliarsingh, Susmita Raulo, Sambit Singh, Rabindro Nath Samal, Manoranjan Mishra, Iqbal Bhat
Summary: This study uses SWOT analysis to examine the internal and external factors influencing Irrawaddy Dolphin-based tourism in Chilika. The study also analyzes tourists' views on dolphin tourism and the impact of tourism on local communities. The findings highlight the strengths and weaknesses of IRD tourism, as well as the opportunities and threats, including the impact of the COVID-19 pandemic. The study recommends a multipronged approach to ensure the sustainability of ecotourism in Chilika, including habitat preservation, resource utilization, service quality, and infrastructure development.
ENVIRONMENTAL DEVELOPMENT
(2023)
Article
Fisheries
A. Carosi, L. Ghetti, A. Soresina, M. Lorenzoni
Summary: Overexploitation is causing depletion of Mediterranean trout populations. Total Catch and Release (C&R) management can reduce catch-related impacts, but it cannot fully replace stricter criteria. The study found that C&R areas had higher trout abundance and balanced age structures compared to exploited areas, but still lower than no-fishing areas. Intensive size-selective harvest in fishing areas negatively affected population structure, especially for older fish.
FISHERIES RESEARCH
(2022)
Review
Biodiversity Conservation
Tamoghna Acharyya, Dutikeshwar Ballav Das, Susmita Raulo, Suchismita Srichandan, Sanjiba Kumar Baliarsingh, Sambit Singh, Bikram Prativa Sudatta, Chinmaya Kumar Sahoo
Summary: This article comprehensively synthesizes existing literature on the Irrawaddy Dolphins (IRD) in Chilika, highlighting the threats they face and proposing a conservation and management roadmap. The prominent threats include damming and diversion of rivers, unsustainable dolphin watching tourism, pollution, and net entanglement. The article emphasizes the importance of shifting the conservation strategy from a species-centric approach to an ecosystem-based approach for the long-term sustenance of IRD.
JOURNAL OF COASTAL CONSERVATION
(2023)
Article
Oceanography
Jose Belquior Gonsalves Neto, Felipe Augusto de Alencar Goyanna, Caroline Vieira Feitosa, Marcelo Oliveira Soares
Summary: This paper highlights the historical discrepancies in fisheries management in the extensive Brazilian waters and illustrates the institutional neglect of this important blue-economy sector. It proposes a pivotal management model based on three main pillars for sustainable fisheries development.
OCEAN & COASTAL MANAGEMENT
(2021)