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The life span of an adult dragonfly ranges from a few weeks to a few months, depending on the species and environmental factors. Ponds and other aquatic habitats serve as both breeding grounds and hunting areas for adult dragonflies. To summarise, the dragonfly life cycle can be broken down...
During this stage, the dragonfly nymph will hunt and devour live prey as much as possible, including insect larvae, worms,snails, leeches, tadpoles, and tiny fish. They will also molt as often as necessary. Sometimes up to 14 times, in order to reach their full size and attain their win...
tadpole, or polliwog, has an oval body with a vertically flattened tail. At this point tadpoles are completely aquatic and mostly vegetarian. At the end of the tadpole phase frogs undergo a process called metamorphosis, during which time the tadpole develops very quickly- within a span of 24 ...
At the physiological level, trade-offs are caused by competitive allocation of limited resources to one life history trait versus the other within a single individual, for example when individuals with higher reproductive effort have a shorter lifespan or vice versa (Figure 2B). A helpful way to...
of the larva’s third pair of mouthparts. Disproportionately large, the mask folds beneath both the head and thorax when it is not in use. At the end of the mask is a set of fanglike pincers used to seize prey such as worms, crustaceans, tadpoles, and smallfish. Different species of ...
Anucleolate Xenopus mutants have survived in parabiosis with normal individuals for four times their usual life-span. All tissues survive at least twice as long in parabiosis as they do in control anucleolate larvae. Lethality is thus concluded to be a secondary effect of the mutation, probab...
但是它一共有六只蝌蚪 But this is only one of six tadpoles. 母蛙得赶回去营救其他蝌蚪 She must rush back down to rescue the others. 母蛙把每一只小蝌蚪 送到不同的凤梨上 One by one she collects them and carries each to its own bromeliad. 不过还有一个问题 But there is another problem. ...
它也是衡量所有生命速度的时钟 Its also the clock that measures the speed of life for all living things here. 其中最脆弱的就是年轻生物 Most vulnerable are the young. 包括这群红眼树蛙的蝌蚪 Among them, this clutch of red-eyed tadpoles. 对团队来说,树蛙蛋看来完全暴露在外 To the team, the ...