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They are unique among insects in that they moult one more time after acquiring functional wings; [13] this last-but-one winged instar usually lives a very short time and is known as a subimago, or to fly fishermen as a dun. Mayflies at the subimago stage are a favourite food of many fish, and many fishing flies are modelled to resemble them ...
Fishflies are quite large, with a wingspan of 2.5 to 3 inches (6 to 8 cm). They will eat aquatic plants as well as small animals including vertebrates like minnows and tadpoles, and may live up to seven days as adults. Their entire lifespan is several years, but most of this time is spent as larvae. There are about 15 genera with nearly 110 ...
Mayfly nymphs do not normally emerge from these tunnels until they are fully developed, at which time they swim to the surface, their skins split, and they emerge as subimagos and fly off. At this time they are very attractive to predators and are eaten by various species of fish, by dragonflies, and by birds.
Flies, if left unmanaged, can present a significant challenge to the welfare and production of all our livestock species.
Another example is the blue wildebeest, the calves of which can stand within an average of six minutes from birth and walk within thirty minutes; [5] [6] they can outrun a hyena within a day. [ 7 ] [ 8 ] [ 9 ] Such behavior gives them an advantage over other herbivore species and they are 100 times more abundant in the Serengeti ecosystem than ...
More recently, in 1962 the biologist Vincent Dethier wrote To Know a Fly, introducing the general reader to the behaviour and physiology of the fly. [100] Musca depicta ("painted fly" in Latin) is a depiction of a fly as an inconspicuous element of various paintings. This feature was widespread in 15th and 16th centuries paintings and its ...
The flying fish's evolutionary streamlined body (which reduces drag) and winglike pectoral fins (that can be laid flat) allow for this species of fish to "fly". Flying fish can be classified into two aerodynamic designs, monoplane and biplane. California flying fish are biplane, meaning they have two sets of "wings". [15]
"Calf" is the term used from birth to weaning, when it becomes known as a weaner or weaner calf, though in some areas the term "calf" may be used until the animal is a yearling. The birth of a calf is known as calving. A calf that has lost its mother is an orphan calf, also known as a poddy or poddy-calf in British.