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The Philippines has a strong fishing culture due to its historically productive and diverse marine ecosystems. In 2018, 927,617 people were officially reported as being involved in "capture fishing", and fish contributes to 50% of a Filipinos protein consumption.
In humans, cyanides block the oxygen-transporting protein haemoglobin; the haemoglobin in fish is closely related to that of humans, and can combine with oxygen even faster. [ citation needed ] Through the irreversible combining of cyanide ions onto the active structural domain , oxygen is prevented from reaching the cells, and an effect ...
The blast also kills the corals in the area, eliminating the reef's structure, destroying habitat for the remaining fish and other animals important for reef health. [16] Muro-ami is the destructive practice of covering reefs with nets and dropping large stones onto the reef to produce a flight response among the fish.
In the Southeast Asian context, especially amongst the islands of the Philippines and Indonesia, the sea and people are very much interconnected. As mentioned, the sea provides both a source of income and source of food for the people. In the Philippines, for example, 67% of protein food consumption comes from fish and fish products.
Like humans and other animals, fish suffer from diseases and parasites.Fish defences against disease are specific and non-specific. Non-specific defences include skin and scales, as well as the mucus layer secreted by the epidermis that traps microorganisms and inhibits their growth.
Blast fishing, fish bombing, dynamite fishing or grenade fishing is a destructive fishing practice using explosives to stun or kill schools of fish for easy collection. This often illegal practice is extremely destructive to the surrounding ecosystem , as the explosion often destroys the underlying habitat (such as coral reefs ) that supports ...
Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to other organisms, or by other means.
A fish kill in a lake in Estonia in 2002 was attributed to a combination of algae bloom and high temperatures. [15] When people manage algae blooms in fish ponds, it is recommended that treatments be staggered to avoid too much algae dying at once, which may result in a large drop in oxygen content. Some diseases result in mass die-offs. [16]