MarineBio Conservation SocietyFisheries News   :: ScienceDaily

Fishing quotas upended by nuclear DNA analysis

Tue, 14 Aug 2018 10:14:24 EDT ~ Fishing quotas have been decided using an inadequate method for decades, according to a new study. The same method has also been used to decide about culling, hunting quotas, or translocating threatened species. Analyzing the nuclear genome of sardines shows previously unrecognized genetic differences between populations, which are not identified by the go-to-method for Isolation-By-Distance, mitochondrial DNA analysis. Find out more...

Young salmon may leap to 'oust the louse'

Mon, 13 Aug 2018 10:03:03 EDT ~ A study by aquatic ecologists reveals that young salmon may jump out of water to remove sea lice. Find out more...

Models may help reduce bycatch from longline fishing

Wed, 08 Aug 2018 15:34:05 EDT ~ Hundreds of thousands of sharks, sea birds and other marine species are accidentally killed each year after becoming snagged or entangled in longline fishing gear. New models may help reduce the threat by giving regulatory agencies a new tool to predict the month-by-month movements of longline fleets on the high seas and determine where and when by-catch risks are greatest. Find out more...

Good news for fishermen: Browning impacts fish less than expected

Wed, 08 Aug 2018 09:37:51 EDT ~ Water color is getting darker in lakes across the planet. This phenomenon, known as 'browning,' was anticipated to cause widespread declines in fish populations. A new study finds that the number of fish populations impacted by browning is smaller than previously believed. Find out more...

African killifish becomes fastest maturing vertebrate on record

Mon, 06 Aug 2018 11:46:26 EDT ~ For most of the year, annual killifish persist as diapausing embryos buried in sediments across the African savannah. When rainwater fills small depressions across the landscape, the fish must hatch, grow, mature, and produce the next generation before the pool dries up. Researchers have found that these small fish condense their life cycle even more in the wild than expected based on studies in the lab. Find out more...

Fish reproduction: Two times a lady

Thu, 02 Aug 2018 10:23:49 EDT ~ A DNA probing technique clarifies the mechanism behind clonal reproduction of female dojo loach fish, also providing insight into the ancestral origin of the clonal population. Find out more...

Fishing fleets travelling further to catch fewer fish

Wed, 01 Aug 2018 16:00:53 EDT ~ Industrial fishing fleets have doubled the distance they travel to fishing grounds since 1950, which means that they are now able to reach 90 percent of the global ocean, but are catching only a third of what they did 65 years ago per kilometer traveled. Find out more...

Troubled waters: Wealthy nations are responsible for almost all of trackable industrial fishing across the global oceans

Wed, 01 Aug 2018 16:00:14 EDT ~ As the global population booms, equitable access to healthy food sources is more important than ever. But a new study shows that wealthy countries' industrial fishing fleets dominate the global oceans. This skew in power and control has important implications for how our planet shares food and wealth. Find out more...

Pinpointing a molecule for sea lamprey control

Wed, 01 Aug 2018 13:15:17 EDT ~ Scientists have identified a single molecule that could be a key in controlling invasive sea lampreys. The researchers have homed in on a fatty molecule that directs the destructive eels' migration. Find out more...

Scientists draw new connections between climate change and warming oceans

Wed, 01 Aug 2018 11:52:26 EDT ~ Earth scientists exploring how ocean chemistry has evolved found similarities between an event 55 million years ago and current predicted trajectories of planet temperatures, with regards to inputs of CO2 into the atmosphere and oxygen levels in the oceans. As the oceans warm, oxygen decreases while hydrogen sulfide increases, making the oceans toxic and putting marine species at risk. Find out more...