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The threat to mayflies applies also to their eggs. "Modest levels" of pollution in rivers in England are sufficient to kill 80% of mayfly eggs, which are as vulnerable to pollutants as other life-cycle stages; numbers of the blue-winged olive mayfly (Baetis) have fallen dramatically, almost to none in some rivers. The major pollutants thought ...
The average size of the egg is 30 mm × 22 mm (1.18 in × 0.87 in), and weighs 7.8 g (0.28 oz), of which 6% is shell. [14] The eggs are incubated for 12–15 days, mainly by the female. [11] The chicks are altricial and downy, [14] and are fed by both parents. They fledge about 14–16 days after hatching.
The Ryukyu Islands: Formosan boar S. s. taivanus or S. taivanus: Swinhoe, 1863 A small blackish subspecies [41] Taiwan: Banded pig S. s. vittatus or S. vittatus: Boie, 1828 A small, short-faced and sparsely furred subspecies with a white band on the muzzle; it might be a separate species and shows some similarities with some other suid species ...
The spring peeper (Pseudacris crucifer) [3] is a small chorus frog widespread throughout the eastern United States and Canada. [4] It prefers permanent ponds due to its advantage in avoiding predation; however, it is very adaptable with respect to the habitat it can live in.
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