Article
Fisheries
Kousuke Yatsuya, Yukio Matsumoto
Summary: The study found that the crab Charybdis japonica has a significant impact on the grazing behavior of the sea urchin Mesocentrotus nudus, being able to consume a large number of sea urchins and prevent them from grazing on kelp blades.
Article
Agriculture, Dairy & Animal Science
Yin Zhang, Khor Waiho, Mhd Ikhwanuddin, Hongyu Ma
Summary: Crabs within the family Portunidae are important marine species in both aquaculture and fishery sectors. The current aquaculture status of most portunids still relies on wild-caught fisheries due to the lack of essential knowledge regarding their reproductive biology and underlying governing mechanism. In the present study, differentially expressed genes (DEGs) between sexes of Portunus sanguinolentus were compared with those of Charybdis feriatus, revealing common genes and similar expression patterns. Furthermore, specific sex-related genes such as DMRT and DSX were identified, providing insights into sex determination mechanisms among portunids.
Article
Multidisciplinary Sciences
Remi Amiraux, David J. Yurkowski, Philippe Archambault, Marie Pierrejean, C. J. Mundy
Summary: The traditional view that the benthic compartment is simpler in structure compared to the pelagic compartment is challenged in this study, which illustrates the presence of a subweb in the benthic realm with similar complexity to the pelagic counterpart, including megafaunal-predatory sea stars equivalent to iconic polar bears.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Pavanee Annasawmy, David Point, Evgeny Romanov, Nathalie Bodin
Summary: The study found variations in mercury concentrations among different organisms and regions in the southwestern Indian Ocean, with increasing Hg concentrations observed with larger body sizes. Bioaccumulation of mercury may occur in marine ecosystems.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Environmental
Peter Thor, Maria E. Granberg, Hulda Winnes, Kerstin Magnusson
Summary: Effluent from exhaust gas cleaning systems on commercial ships, whether released directly to the sea or treated, contains high concentrations of heavy metals and PAHs that are toxic to marine organisms, leading to elevated mortality rates and impaired molting in copepods even at low concentrations. The toxic compounds in the effluents are not solely explained by individual PAHs or heavy metals, but may be from unknown compounds formed during the scrubbing process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Studies
Lida Teneva, Aaron L. Strong, Vera Agostini, Kenneth J. Bagstad, Evangelia G. Drakou, Zachary Ancona, Kristina Gjerde, Andrew C. Hume, Nicholas Jickling
Summary: Human activities in the global ocean continue to expand, particularly in food production, marine energy, transportation, and commerce. However, current management approaches are sectoral and lack holistic considerations. Coordination across sectors is becoming increasingly crucial to support sustainable ocean use and the Blue Economy.
Article
Environmental Sciences
Bai-an Lin, Yan Jiang, Min Liu
Summary: This study compared the population structure and reproductive pattern of the ridged swimming crab Charybdis natator in the southern Taiwan Strait over a 25-year period. The results showed changes in the sex ratio, with a shift from male bias to female bias. Male body sizes were larger than females in both datasets. The average body size and weight of both males and females decreased significantly over time. There was also a shift in the spawning peak season and a reduction in the minimum body size for female maturation.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
R. K. Renjith, Paras Nath Jha, S. Chinnadurai, M. V. Baiju, Saly N. Thomas
Summary: Depredation by crabs has a negative impact on marine gillnet fishery, but there have been limited studies evaluating this behavior. This study is the first attempt to assess the qualitative and quantitative effects of crab depredation on marine gillnet fishery. Experimental gillnetting conducted from February 2017 to January 2018 along the south-west Indian coast showed intentional discard of Indian mackerel (17.59%), kawakawa (14.77%), shrimp scad (10.74%), and horse mackerel (10.02%) due to depredation by the deepsea swimming crab Charybdis smithii. Financial loss caused by depredation was highest for Indian mackerel (19.99%), followed by shrimp scad (19.17%), kawakawa (14.77%), and horse mackerel (14.16%). A total of $2554.30 per operation was lost due to crab depredation. C. smithii showed a preference for scombrids (Indian mackerel and kawakawa) over carangids (shrimp scad and horse mackerel) due to their inherent flavor and texture. Incidence of depredation was found exclusively during June to September (monsoon season).
INDIAN JOURNAL OF FISHERIES
(2023)
Article
Oceanography
L. Umlauf, K. Klingbeil, H. Radtke, R. Schwefel, J. Bruggeman, P. Holtermann
Summary: This article introduces a fully coupled benthic-pelagic modeling system that takes into account the effects of sediment biogeochemistry and near-bottom turbulence on sediment-water fluxes. The study shows that near-bottom turbulence plays a crucial role in controlling sediment-water fluxes, oxygen penetration depth, and re-oxidation of reduced compounds in benthic layers.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Marc Bouvy, Alice Belieres, Claire Carre, Patrice Got, Marc Pagano, Helene Agogue, Beatrice Bec, Cecile Roques, Lionel Bigot, Pascale Chabanet, Christine Dupuy
Summary: The study of the Glorieuses islands' pristine ecosystems revealed them to be ultra-oligotrophic waters with low diversity. Microbial indexes may be considered to assess ecological changes in the waters.
MARINE POLLUTION BULLETIN
(2022)
Article
Multidisciplinary Sciences
Irina Zhulay, Katrin Iken, Paul E. Renaud, Ksenia Kosobokova, Bodil A. Bluhm
Summary: Pelagic-benthic coupling refers to the connection between surface-water production and seafloor habitats through the exchange of energy, nutrients, and mass. The strength of this coupling was compared between 2005 and 2016 in the poorly studied Arctic Chukchi Borderland, with 2016 being a low-ice year. The results showed weaker coupling in 2016, with higher isotopic niche overlap and shorter isotopic distance between pelagic and benthic food web components.
SCIENTIFIC REPORTS
(2023)
Article
Microbiology
Ningdong Xie, Mohan Bai, Lu Liu, Jiaqian Li, Yaodong He, Jackie L. Collier, Dana E. Hunt, Zackary Johnson, Nianzhi Jiao, Guangyi Wang
Summary: This study focused on the abundance, diversity, and community structure of Labyrinthulomycetes in the pelagic Eastern Indian Ocean, revealing distinct vertical distribution patterns and roles of Labyrinthulomycetes in oceanic carbon cycling and sequestration relative to prokaryotic plankton.
MICROBIOLOGY SPECTRUM
(2022)
Article
Environmental Sciences
Chaofeng Wang, Li Zhao, Yuanyuan Wei, Zhimeng Xu, Yanchu Zhao, Yuan Zhao, Wuchang Zhang, Tian Xiao
Summary: Our study provides important insights into the dynamics of microbial food webs in oligotrophic tropical seas. We found that the components of MFW exhibited unique vertical distribution patterns and were significantly influenced by environmental variables.
MARINE POLLUTION BULLETIN
(2023)
Article
Ecology
Kumar Nimit
Summary: The Indian Ocean Rim area is home to many underdeveloped and emerging economies that rely on ocean resources for livelihoods. Operational ocean information services are essential for efficiently harnessing these resources and ensuring safety, with a range of services needed beyond just fisheries information.
Article
Multidisciplinary Sciences
U. Loeptien, H. Dietze, R. Preuss, U. Toussaint
Summary: Pelagic biogeochemical models have become integral components of Earth System Models, but parameter uncertainties pose a significant challenge in projections. This study uses sensitivity analysis to map parameter uncertainties onto local model entities, facilitating uncertainty reduction. The study highlights the importance of identifying and refining specific parameters for reliable projections.
SCIENTIFIC REPORTS
(2021)
Article
Ecology
Nathalie Bodin, Heidi Pethybridge, Leanne M. Duffy, Anne Lorrain, Valerie Allain, John M. Logan, Frederic Menard, Brittany Graham, C. Anela Choy, Christopher J. Somes, Robert J. Olson, Jock W. Young
Article
Environmental Sciences
Julien Jouanno, Jean-Sebastien Moquet, Leo Berline, Marie-Helene Radenac, William Santini, Thomas Changeux, Thierry Thibaut, Witold Podlejski, Frederic Menard, Jean-Michel Martinez, Olivier Aumont, Julio Sheinbaum, Naziano Filizola, Guy Dieudonne Moukandi N'Kaya
Summary: In recent years, there has been a massive proliferation of Sargassum in the Tropical Atlantic, but there is no clear evidence to suggest a significant increase in nutrient fluxes from rivers or that hydrological changes are the primary drivers of Sargassum proliferation. Observations also indicate a decrease in phytoplankton biomass in major Atlantic river plumes over the past two decades, highlighting the need for a better understanding of the nutrient sources sustaining Sargassum and phytoplankton growth in the region.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Alex Souza Lira, Flavia Lucena-Fredou, Frederic Menard, Thierry Fredou, Julio Guazzelli Gonzalez, Valdimere Ferreira, Jose Souto Rosa Filho, Jean-Marie Munaron, Francois Le Loc'h
Summary: The study utilized SIA and SCA analyses to investigate feeding relationships and ecological effects of bottom trawling in a coastal ecosystem in northeastern Brazil. The results indicated a preference for benthic invertebrates as prey for the fish fauna, highlighting their importance in the food web. Differences between SCA and SIA approaches were observed, with trophic pathways associated mostly with benthic sources.
Article
Ecology
Aurore Receveur, Valerie Allain, Frederic Menard, Anne Lebourges Dhaussy, Sophie Laran, Andreas Ravache, Karen Bourgeois, Eric Vidal, Steven R. Hare, Henri Weimerskirch, Philippe Borsa, Christophe Menkes
Summary: Understanding the ecological mechanisms influencing distribution patterns of marine predators is crucial for population management. This study in the Coral Sea Natural Park analyzed the spatial distributions of marine predators, such as fish, cetaceans, and seabirds, in relation to environmental variables and prey abundance proxies. The research found that factors such as bathymetry, chlorophyll-a concentration, and temperature played significant roles in influencing predator distributions.
Article
Marine & Freshwater Biology
Julio Guazzelli Gonzalez, Audrey M. Darnaude, Paulo J. Duarte-Neto, Francois Le Loc'h, Mayara Constantino de Lima, Frederic Menard, Valdimere Ferreira, Flavia Lucena Fredou, Jean-Marie Munaron, Thierry Fredou
Summary: This study investigated the diet and food niche overlap of two sympatric species of jacks' juveniles in three estuaries along the northeastern Brazilian coast. Despite differences in diet, the two species had similar isotopic niches mainly consisting of fish and crustaceans, showing adaptability to local prey availability. Interactions between juvenile diet and food web structure at different locations resulted in varying levels of local isotopic niche overlaps between the species.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Review
Oceanography
Aurore Receveur, Cyril Dutheil, Thomas Gorgues, Christophe Menkes, Matthieu Lengaigne, Simon Nicol, Patrick Lehodey, Valerie Allain, Frederic Menard, Anne Lebourges-Dhaussy
Summary: This study utilizes CMIP5 model outputs to drive two different micronekton models and predicts future changes in micronekton biomass in the Coral Sea. The forecasts suggest a consistent decrease in epipelagic micronekton biomass throughout the 21st century, while vertical patterns of micronekton show considerable differences between models, potentially affecting the evolution of top predators in the future.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Fisheries
Yuriy Kvach, Sergiy Snigirov, Yevhen Leonchyk, Veniamin Zamorov
Summary: The first data on the parasite community of the black scorpionfish in Ukraine were presented, revealing differences in parasitisation and fish age between the Gulf of Odessa and Snake Island.
JOURNAL OF APPLIED ICHTHYOLOGY
(2022)
Article
Oceanography
Olusegun Dada, Rafael Almar, Pierre Morand, Frederic Menard
Summary: The study of coastal systems reveals the varying pressures exerted by different indicators on the West African coastal systems in future scenarios, providing valuable insight for management strategies. The mPPD framework offers a way to investigate different intensities of press and frequencies of the pulse, highlighting the inconsistencies in resource users' aspirations and coordination of human activities in the coastal zone.
OCEAN & COASTAL MANAGEMENT
(2021)
Review
Oceanography
Leandro Nole Eduardo, Arnaud Bertrand, Michael Maia Mincarone, Julia Rodrigues Martins, Thierry Fredou, Ramilla Vieira Assuncao, Rayssa Siqueira Lima, Frederic Menard, Francois Le Loc'h, Flavia Lucena-Fredou
Summary: Lanternfishes are a diverse and abundant fish family in the Southwestern Tropical Atlantic, with different species exhibiting varying patterns of prey composition and migratory behavior. Many of these species migrate to the surface at night to feed and serve as a central food source for mesopelagic and bathypelagic predators, connecting shallow and deep-sea ecosystems. Environmental conditions have minimal impact on the horizontal structure of lanternfish assemblages in this region.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Marine & Freshwater Biology
Alex Souza Lira, Flavia Lucena-Fredou, Carlos Henrique Figueiredo Lacerda, Leandro Nole Eduardo, Valdimere Ferreira, Thierry Fredou, Frederic Menard, Ronaldo Angelini, Francois Le Loc'h
Summary: The study investigates the food web structure and trophic interactions of Brazilian tropical estuaries using trophodynamic models. The findings suggest that certain commercially valuable species are ecologically important and lack fishing regulations. The impacts of fisheries on different trophic levels vary across ecosystems. This study provides valuable insights into the understanding of the trophic functioning and fishery effects on estuarine ecosystems.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Marine & Freshwater Biology
Latifa Pelage, Valdimere Ferreira, Flavia Lucena-Fredou, Guilherme V. B. Ferreira, Julio Guazzelli Gonzalez, Andrea Pontes Viana, Alex Souza Lira, Jean-Marie Munaron, Thierry Fredou, Frederic Mernard, Francois Le Loc'h
Summary: The lack of knowledge about highly anthropised tropical ecosystems poses a problem for their conservation. This study used carbon and nitrogen stable isotopes to investigate the food web structure of the estuarine ecotone of the Santa Cruz Channel (SCC) in northeast Brazil. The results showed differences in isotopic compositions among basal sources, invertebrates, and fish in coastal and estuarine environments, with greater variability in the estuary. Fish isotope compositions varied according to their feeding habits, and coastal basal sources significantly supported certain fish guilds. Developing a management plan that includes all interconnected habitats is necessary to protect these ecosystems.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Leandro Nole Eduardo, Flavia Lucena-Fredou, Sophie Lanco Bertrand, Alex Souza Lira, Michael Maia Mincarone, Guilherme Tavares Nunes, Thierry Fredou, Andrey Soares, Francois Le Loc'h, Latifa Pelage, Ralf Schwamborn, Paulo Travassos, Karla Martins, Simone M. A. Lira, Gabriela A. A. Figueiredo, Teodoro Vaske Junior, Frederic Menard, Arnaud Bertrand
Summary: This study evaluates the trophic linkage between epipelagic and mesopelagic ecosystems and finds a significant trophic difference between the two layers. It also shows that deep-sea species have a higher trophic specialization. The study also discusses the impacts of human activities on these species and their vulnerability in the Anthropocene.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Guilherme V. B. Ferreira, Anne K. S. Justino, Leandro N. Eduardo, Natascha Schmidt, Julia R. Martins, Frederic Menard, Vincent Fauvelle, Michael M. Mincarone, Flavia Lucena-Fredou
Summary: Plastic debris is widespread in the deep-sea lanternfishes in the southwestern tropical Atlantic. The study found that large microplastics made of high-density polymers were more prevalent, particularly in deeper layers. Additionally, fishes that migrate from the upper mesopelagic to the epipelagic layers had the highest intake of microplastics, while those foraging in shallower layers had the lowest intake.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Julien Jouanno, Rachid Benshila, Leo Berline, Antonin Soulie, Marie-Helene Radenac, Guillaume Morvan, Frederic Diaz, Julio Sheinbaum, Cristele Chevalier, Thierry Thibaut, Thomas Changeux, Frederic Menard, Sarah Berthet, Olivier Aumont, Christian Ethe, Pierre Nabat, Marc Mallet
Summary: Researchers have developed a modeling framework based on the NEMO ocean model to study the transport and physiology of Sargassum, successfully reproducing and forecasting the seasonal cycle and large-scale distribution of Sargassum biomass.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
Article
Genetics & Heredity
S. Tarasjuk, V. V. Zamorov, O. Zaloilo, O. Iu Bielikova, D. B. Radionov
Summary: Allelic variants of round goby populations from different samples in the Black and Azov Sea basin showed significant differences in genetic structure, with high levels of polymorphism. Phylogenetic analysis revealed both similarities and genetic specificity among round goby populations from different geographical regions.
CYTOLOGY AND GENETICS
(2021)