Social parasitism involves one species relying on another(prenominal) to raise its young. Among vertebrates, the better known social parasites are such birds as cuckoos and cowbirds; the female person lays an egg in a draw near belonging to another species and leaves it for the host to rear.
????????????????????????????????????????????????????????????
????????????????????? ????????????????????????????????????????????????????????????
??????? ???? ????????? ??? ??... ????????????????????????????????????????????????????????????
?????????
The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual way of ants belonging to the genus Polyergus. All species of this ant have lost the talent to care for themselves. The workers do not forage for food, feed their worry or queen, or even dean their own nest. To catch up with for these deficits, Polyergus has become specialized at obtaining workers from the related genus genus Formica to do these chores.
????????????????????????????????????????????????????????????
??????????????????????????? Polyergus ????????????????????????????????????????????????????????????
??? ????????????????????????????????????????????????????????????
????????????????????????????????????????????? Polyergus ????????????????????????????????????????????? Formica ?????????
In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, cross it, drive off the queen and tier workers, capture the portentous brood, and transport it back to their nest. The captured brood is then reared by the house physician Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest The Formica workers forage for food and give it to colony members of both(prenominal) species. They also remove wastes and excavate new chambers as the population increases.
????? Polyergus ??????????????????????500 ??????????????????? Formica...If you want to get a full essay, order it on our website: Ordercustompaper.com
If you want to get a full essay, wisit our page: write my paper
No comments:
Post a Comment