Tag: "carp" at biology news
Do fish farms really add to the world's supply of fish?
...Asian farmers produce more than 10 million tons of carp
and tilapia every year. But as human populations increase and land becomes scarce, there is less space available to build ponds for carp, tilapia and other popular plant-eating fish. So Asian farmers have decided to grow bigger fish by adding extra ...
A seafood paradox: Will fish farming save or deplete our ocean fisheries?
...rming more vegetarian fish and shellfish - such as carp
and mussels - is one way to produce needed fish protein for people without depleting ocean populations, Naylor contends. Shellfish farming, in fact, purifies the water by filtering out algae and waste, she adds. Naylor believes that aquaculture, wh...
Stress delays puberty
...research at Utrecht University has shown that when carp
are subjected to stress, the development of their ...h. Dimitri Consten of Utrecht University subjected carp
to a rapid reduction in water temperature three times a week from 250C down to 140C. This led to del...
The curse of the carp
...hen drained months later to simulate droughts. But carp
come with the water. Some wetland access points are fitted with carp
screens, which admit carp
no larger than a finger. These die when the wetlands are drained and befor...
Sturgeon researcher's vision spawns thriving industry
...lture for other fish including striped bass, grass carp
and paddlefish. He has trained more than 600 students in production aquaculture and reproductive biology of fish species for aquaculture....
Sea Grant research shows electric barrier may stop Asian carp
...itary and Ship Canal may effectively prevent Asian carp
from entering Lake Michigan, according to prelimin...archers found that more than 99 percent of bighead carp
were deterred by a simulated electric barrier modeled after the actual one. Using fish raceways to d...
Slightly stressed carp succumb easily to parasite
... Wageningen have discovered that slightly stressed carp
are much more susceptible to parasites than unstressed carp. All of the laboratory carp
which were taken out of the water for one minute a day, died from parasitic attack. Only 40% of the ...
Oxygen deficiency is an endocrine disruptor in fish
... the survival of many populations. A new study of carp
suggests that hypoxia, or oxygen deficiency, is an...fertilization and larval survival. Immature adult carp
( Cyprinus carpio ) were separated into two groups of 50 fish each. One group was reared under norma...
Invasive species summit aims to halt Great Lakes-Mississippi River species exchange
...move between the two basins, including the bighead carp
and silver carp, which have traveled from the Mississippi River to the Illinois River and could soon enter the Great Lakes. They pose a significant threat to the $4.5 billion sport and commercial fishery industries in the Great Lakes. The zebra musse...
Summit generates possible solutions to exchange of invasive species in Midwest waterways
... desirable, native fish, so competition with Asian carp
threatens the abundance and even the existence of native fish species. There are nearly 40 native mussel species in the Mississippi River from the headwaters in Minnesota to southern Illinois, some of which are federally threatened or endangered. ...
Farming the tigers of the sea undermines the promise of aquaculture
...e most farmed fish are vegetarian species, such as carp
and catfish, farming of carnivorous species, such as salmon, is a booming industry and the number of other farmed carnivorous species is growing rapidly. However, industrialized farming of carnivorous fish such as salmon requires the intensive use o...
ESA calls for interdisciplinary studies of GEOs
From corn to carp
to the bacteria in yogurt, people have modified organisms for specific traits for centuries. Today, genetic engineering offers the potential to provide new benefits and new risks, as does any new technology. The Ecological Society of America (ESA)'s...
Snakehead in your inbox? Welcome to the nonindigenous Aquatic Species Alert System
...such as American alligators in Pennsylvania, Asian carp
in Colorado, or snakehead fishes in Virginia. The system is flexible, providing two different perspectives one to a user interested in an area, the other to users interested in a species whether the user chooses automatic alerts or prefers to sear...