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The tiger shark is the only species in its family that is ovoviviparous; its eggs hatch internally and the young are born live when fully developed. [7] Tiger Sharks are unique among all sharks in the fact that they employ embrytrophy to nourish their young inside the womb. The young gestate in sacks which are filled with a fluid that nourishes ...
While white sharks tend to go for marine mammals, tiger sharks are non-selective and “more Catholic” in their diet. “If what they perceive is food and it doesn’t look like food anymore ...
Physical characteristics of sharks – shark skeleton, respiration and skin Dermal denticle – small outgrowths which cover the skin of sharks; Ampullae of Lorenzini – sensing organ that helps sharks and fish to sense electric fields; Electroreception – the biological ability to perceive electrical impulses (see also Ampullae of Lorenzini)
Herbivory is of extreme ecological importance and prevalence among insects.Perhaps one third (or 500,000) of all described species are herbivores. [4] Herbivorous insects are by far the most important animal pollinators, and constitute significant prey items for predatory animals, as well as acting as major parasites and predators of plants; parasitic species often induce the formation of galls.
The genomes of the Tasmanian devil, killer whale, polar bear, leopard, lion, tiger, cheetah and domestic cat were analysed, and shared positive selection for two genes related to bone development and repair (DMP1, PTN), which is not seen in omnivores or herbivores, has been found. This indicates that a stronger bone structure is a crucial ...
Scientists fixed tags equipped with cameras onto tiger sharks so that they could view the ocean floor from a new perspective. What they saw was astounding. How tiger sharks wearing cameras ...
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The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 512 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...