Sentence examples for fish vulnerable from inspiring English sources

In recent years, however, the wild salmon population has more than halved, partly because of the spread of sea lice, parasites that feast on the mucus and skin of the fish before moving on to the muscle and fat, making the fish vulnerable to infections and sometimes killing them.

Low levels of water leave fish vulnerable to reptiles and birds, and as sawgrass dries it can burn or die off, which in turn kills apple snails and other animals that wading birds feed upon.

Burbank's Assistant Water Manager, Bill Mace, said that in winter, some fresh water flows directly to the ocean because of pumping restrictions related to environmental concerns such as the delta smelt, a federally-protected species of fish vulnerable to State Water Project pumps.

The associations of rockfish and lingcod with the nearshore zone also make these fish vulnerable to pollution events including oil spills.

Higher metabolic rates in fish vulnerable to angling indicate physiological differences compared with those that are less vulnerable and would remain in the lake after an intense fishing season.

If the behaviours and other phenotypic traits that make a fish vulnerable to angling have a genetic basis, selection pressure can be exerted upon harvest (Lewin et al. 2006) and when hooking or stress-related mortality occurs in catch-and-release events (Muoneke and Childress 1994; Bartholomew and Bohnsack 2005; Arlinghaus et al. 2007).

And, the researchers say, it may make the fish more vulnerable to predators.

Farm operators like Marine Harvest, a Norwegian concern that is a major presence in salmon farming here, concede that penned fish are vulnerable to microbes and parasites but say drugs and pesticides minimize the problem, virtually eliminating the risk to wild fish stocks.

Bottom trawling and gillnetting are nonselective methods that catch 20%to40%0% of unwanted fish, including vulnerable deep-sea species with long lifespans and slow reproduction rates.

To understand how boldness could translate into leadership, the Cambridge team set up aquaria in which one side was a "safe area" with deep water and plastic plants and the other side was a "risky," exposed area designed to make the fish feel vulnerable to being eaten by birds.

The sheer size and thick skin of an adult of the species deters many smaller predators, but younger fish are vulnerable to predation by bluefin tuna and mahi mahi.