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Sarcopterygii (/ ˌ s ɑːr k ɒ p t ə ˈ r ɪ dʒ i. aɪ /; from Ancient Greek σάρξ (sárx) 'flesh' and πτέρυξ (ptérux) 'wing, fin') — sometimes considered synonymous with Crossopterygii (from Ancient Greek κροσσός (krossós) 'fringe') — is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe ...
Since a fertilized egg represents a complete organism at one stage of its life cycle, eating an egg is a form of predation, the killing of another organism for food. Egg predation is found widely across the animal kingdom, including in fish, birds, snakes, mammals, and arthropods. Some species are specialist egg predators, but many more are ...
Oligophagy is a term for intermediate degrees of selectivity, referring to animals that eat a relatively small range of foods, either because of preference or necessity. [2] Another classification refers to the specific food animals specialize in eating, such as: Carnivore: the eating of animals Araneophagy: eating spiders; Avivore: eating birds
Contrary to its South American and African relatives, the Australian lungfish does not make a nest or guard or care for its eggs. [29] When spawning does take place, the pair of fish will lie on their sides or become entwined. They usually deposit their eggs singly, occasionally in pairs, but very rarely in clusters.
The egg is not retained in the body for most of the period of development of the embryo within the egg, which is the main distinction between oviparity and ovoviviparity. [1] Oviparity occurs in all birds, most reptiles, some fishes, and most arthropods. Among mammals, monotremes (four species of echidna, and the platypus) are uniquely oviparous.
The U.S. Fish and Wildlife Service's Pacific region says Wisdom, the world's oldest known wild bird, has returned to Midway Atoll National Wildlife Refuge to lay an egg. The bird was first tagged ...
The eggs, larvae, pupae, and adults of certain insects have been eaten by humans from prehistoric times to the present day. [8] Around 3,000 ethnic groups practice entomophagy. [ 9 ] Human insect-eating (anthropo-entomophagy) is common to cultures in most parts of the world, including Central and South America , Africa , Asia , Australia , and ...
Humans have a long history of both eating wild bird eggs and raising birds for farmed eggs for consumption. [citation needed] Brood parasitism occurs in birds when one species lays its eggs in the nest of another. In some cases, the host's eggs are removed or eaten by the female, or expelled by her chick.