Articles tagged with Marine Fishes
Dr. Pauly's research reveals that the world passed its peak fish in the late 1980s and has been gradually sinking since then. To prevent a collapse, he advocates for reducing excess fishing capacity, creating no-take zones, and enforcing sustainable fishing levels.
A study found that individual transferable quotas decreased discard rates for most species, contrary to economic models. In British Columbia waters, the system reduced marketable fish discards to negligible amounts due to 100% observer coverage. The US West Coast fishery, however, experienced higher discard rates despite trip limits.
Researchers found that warming swordfishes' eyes allows them to process visual information faster than cooled eyes, giving them a significant edge over prey. By heating their eyes, swordfishes retain the ability to spot quickly moving objects, enabling successful hunts in cold water.
The Florida manatee population is rising in some regions, with annual growth rates of 3.7% and 6.2% in the Northwest and Upper St. Johns River regions, respectively. However, the Atlantic region's estimated growth rate is 1.1%, suggesting a possible decline or stability, while the Southwest region shows a negative growth rate.
A study found 16 non-native species of fish in ocean waters off the southeast coast of Florida, released from home aquariums. Aquarium owners are often unaware of the potential pitfalls of releasing pets into the wild, and education programs can help curtail exotic species introductions.
The Florida Sea Grant is supporting research to develop more efficient methods for raising marine ornamental fish, such as angelfish and anemonefish. This focus on sustainable aquaculture aims to reduce the industry's impact on coral reefs and promote environmentally friendly practices.
A recent study found that only a small proportion of individuals produce large numbers of offspring that survive, threatening the genetic diversity of marine fish populations. With millions of fish remaining, even a few hundred capable breeders can be insufficient to sustain genetic variability.
The book examines California's commercial and recreational fisheries, discussing natural history and ecological health. With over 125 leading scientists contributing to the report, it provides valuable insight into the relationship between marine resources and economic prosperity.
A new report emphasizes the importance of counting salmon to validate conservation strategies, as most current programs rely on habitat conditions without evidence of impact. Validation monitoring involves tracking fish before, during, and after changes in buffers or comparing waterway numbers with or without buffers.
The world's growing demand for seafood may be met through aquaculture, but it will need significant advancements in biotechnology. Biotech is already improving aquaculture productivity, efficiency, and profitability, but more work is needed to bring fish production on par with other livestock.
A three-year study found no evidence of toxic substances from Pfiesteria in seafood. Researchers sampled edible tissues from various fish species and discovered that only menhaden were affected, with open sores being the primary cause.
A new study by Stanford University researchers finds that global aquaculture production has more than doubled in the past 15 years, but it also adds to the world's supply of fish. However, the growing demand for carnivorous species like salmon and shrimp threatens the sustainability of ocean fisheries.
The study found that aquaculture is contributing to the depletion of fish populations worldwide through inefficient practices and habitat destruction. The authors recommend promoting ecologically sound management and sustainable production methods to reduce the pressure on wild fisheries.
A Purdue University researcher has developed a soy-based feed for farm-raised fish, reducing phosphorus and nitrogen excretion and minimizing pollution. This alternative feed is expected to meet growing demand in the aquaculture industry, which is struggling with declining wild fish populations.
Researchers have confirmed a new, genetically distinct species of Pfiesteria that thrives in waters with high levels of nitrogen, posing risks to fish and potentially human health. The discovery brings the total number of toxic Pfiesteria species to two, shedding light on their life cycles and behaviors.
Jan Kohlmeyer and his team have identified a new order of marine fungi, Lulworthiales, which includes species that break down dead seaweed, marsh plants, and wood in oceans and estuaries. These microorganisms are crucial for recycling nutrients and maintaining the health of marine ecosystems.
A groundbreaking study published in Nature reveals that many coral reef fish spend their life cycle close to home, rather than drifting in the open ocean. This finding has significant implications for marine conservation and fisheries management, as it challenges the prevailing view of larval dispersal.
A University of North Carolina at Chapel Hill marine scientist has warned of potentially devastating effects of Hurricane Floyd on the nation's largest lagoonal estuary, Pamlico Sound. The storm could lead to catastrophic flooding, runoff, and low oxygen conditions, harming commercial and recreational fisheries.
Biologists predict that global warming and pollution will lead to more frequent die-offs of sea life, with diseases such as distemper and herpes virus spreading among marine organisms. The study highlights the need for interdisciplinary research to understand the impacts of climate change on ocean epidemics.
This book provides a thorough understanding of marine fish culture, including commercial production statistics, water treatment, rearing units, and nutrition for various species. With over 4,000 references, it is an essential resource for researchers, educators, and aquaculture professionals.
A new report reveals that shrimp and salmon aquaculture may be depleting fisheries, disrupting coastal ecosystems, and polluting the ocean due to unsustainable practices. Improved practices, such as reducing fish feed requirements and minimizing pollution, are needed to make these industries more sustainable.
A new satellite tagging technology has resolved the mysteries of tuna migration, revealing that bluefin tuna can move up to 1,670 nautical miles in 90 days. The tags, deployed in 1996 and 1997, have high survivorship rates and provide valuable information for managing giant bluefin tuna populations.
Researchers at Cornell University discovered that the auditory portion of the midbrain uses acoustic qualities to isolate one signal as potentially interesting, similar to the cocktail party effect. This ability helps female midshipman fish locate the hum of interest among multiple signals.
Researchers at Harbor Branch are investigating the feasibility of controlling the reproduction of southern flounder in captivity. They have successfully induced broodstock spawning and achieved high larval survival rates, paving the way for future grow-out trials.
The Florida Marine Aquaculture Industry Development (MAID) Workshop aims to prioritize species for marine food fish aquaculture in Florida, focusing on production systems, markets, and regulations. The event also explores entrepreneurial and research opportunities for the industry.
A team of marine scientists has discovered a massive influx of hydroids, tiny predators that eat most daily production of small crustaceans relied on by fish larvae. The hydroids' presence threatens the survival of already vulnerable cod and haddock populations.
Scientists from over 20 nations will gather to discuss the processes and interactions that determine fish population production. The symposium explores topics such as overfishing, environmental factors, and recruitment dynamics to better understand the global fisheries crisis.
A unique deep-water coral reef with 80% coral cover was discovered in the Gulf of Mexico, challenging conventional thinking that coral reefs are restricted to shallow areas. The reef's unusual flat plate-like form and complex structure provide an ideal habitat for fish.
Researchers have traced the genetic origin of the antifreeze protein found in Antarctic fish, which plays a crucial role in their survival. The discovery sheds light on the process of adaptive molecular evolution and its impact on the ecology of the Antarctic Ocean.
A fishwheel harvesting method could benefit both fishermen's incomes and native salmon populations. The traditional method was banned in the 1920s due to large harvests and political conflicts, but is now being reconsidered as a potential solution to ecological and management problems.
Research sheds light on climate change by showing fish in Antarctica and Arctic independently evolved similar antifreeze glycoproteins, linked to environmental adaptation. The genes arose around 5-14 million years ago, providing new evidence for the Southern Ocean's freezing timeline.
Recent dinoflagellate blooms in the Chesapeake Bay have caused significant fish kills, with some species known to be highly toxic. The phantom dinoflagellate, Pfiesteria piscicida, has been identified as a potential threat to both human and aquatic health.