The global warming influences the gender The big lizard

The global warming influences the gender The big lizard of New Zealand probably exterminates
Author: Li JinLiang

Big lizard of New Zealand

The big lizard of New Zealand is a kind of reptile that era only survived of dinosaur knowing on the earth at present, the quantity has been already very rare. But because the whole world becomes warm continuously, such big lizard known as New Zealand living fossil is facing the danger that becomes extinct. Studies have suggested, the temperature raises and impels the male proportion of the large lizard to raise by a wide margin, it is female and unable to multiply and become extinct to lack finally.

May all turn into male

The big lizard of New Zealand is only storing the offspring of spot wedge tooth Yi of old reptile, can trace back to 200 million years ago. Their gender is decided by temperature when the ovum is hatched, the higher the temperature is, the higher the male rate is. Generally speaking, when the temperature is at over 22.25 , the offspring who hatches out is mostly male, and when the temperature is lower than 22.1, the female proportion is larger.

At present, the big such lizard has been already rare, see several only on some islands far away from main island in New Zealand once in a while. As the global warming is aggravated, the large lizard's temperature of the habitat will rise constantly, such delicate change will lead to the fact their gender is out-of-balance completely. Large lizard's most nest Anns are in very shallow soil, in the population is mostly male at present. Though big lizard in the past can stand abominable climate, in might cause meteor that dinosaur become extinct survive bump into. But the quantity of the large lizard was very abundant at that time, this made them have enough genetic mutations that saw through the difficulty.

According to climate model of Australian scientist's making, look at the speed of global warming now, by 2085, 4 that the temperature on average on the earth may rise, this causes being enough the new born New Zealand big lizards to all become male.

Hatch in female 2085 years finally

The more terrible thing is, the breeding potential of the big lizard of New Zealand is very low. On average, mate femaly once every 4 years, and the ovum takes 11-16 months and can be hatched out. The climate model reveals, the global warming has prominent influence on that the big lizard survives, the last one is female may have hatched in 2085, perhaps there were a few big lizards of male surviving at that time.

Though big the intersection of lizard and itself make, locate in ovum shady and cool place or delay producing the adaptability evolution of time of egg already, but this is not enough to help them to overcome the severe extinction threat day by day. In view of this, scientists are endeavouring to save the big lizard at present.

Researchers imply, the enviro can offer manpower shady and coolly near the large lizard's egg-producing nest, and save the natural habitat of the large lizard with all strength. Scientists of Australia Melbourne university Michael and Kohl say in Nicaragua: "The big lizard is a very old animal, their ancestor once lived together with the dinosaur. If lose them, it will be the panhuman shame. "

The big lizard of New Zealand is very magical

The intersection of New Zealand and old the intersection of lizard and extant the intersection of both kinds and the intersection of spot and the intersection of wedge and the intersection of tooth and lizard's family that appear belong to 200 million year, can vary several color in the all one's life such as they, long body can long to reach more than 60 centimetres, the life-span is over 100 years. Have mysterious third eyes at their forehead, though the function clear, but the scientists suspect it can help the big lizard to distinguish time. The large lizard lives in the cave, often shares the nest with the birds, can hold the breath and is as long as an hour. They usually move about at the night, pray on some small-scale animals.

The big lizard of New Zealand is completely different from general lizard, the difference between them includes: The male in the big lizard of New Zealand has no genitals in a normal sense; Shoulder long and sharp feather; The name of the big lizard comes from indigenous Maori, means " recite the peak " .

The global warming influences the gender The big lizard of New Zealand probably exterminates