798 resultados para Queens.
Resumo:
The life history of Harpegnathos saltator is exceptional among ants because both queens and workers reproduce sexually. Recently mated queens start new colonies alone, but later some of the offspring workers also become inseminated and take over the egg-laying role. This alternation seems associated with the existence of very complex underground nests, which are designed to survive floods. Longevity of ponerine queens is low (a consequence of limited caste dimorphism in this "primitive" subfamily), and upon the death of an H. saltator foundress, the nest represents a substantial investment. The queen's progeny should thus be strongly selected to retain the valuable nests. Unlike the flying queens, the workers copulate with males from their own colonies, and, thus, their offspring are expected to be highly related to the foundress. Colony fission appears not to occur because a daughter fragment would lack an adequate nest for protection. Thus, the annual production of queens in colonies with reproductive workers remains essential for the establishment of new colonies. This contrasts with various other ponerine species in which the queens no longer exist.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Compiled by John Evelyn (not the diarist) cf. Brit. mus. Catalogue.
Resumo:
In anticipation of the coronation of King George III.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
At head of title: "The first proofs," with words in an unknown alphabet. "We claim that this literary work is of the same mind that formerly composed and wrote the immortal works now known as those of William Shakespeare. Our Brotherhood has collected the most remote history of the world in the highest spiritual study, to satisfy the truth of immortality."--Introduction (translated.).
Resumo:
Includes bibliographical references and index.
Resumo:
Wolff, R.L. l9th cent. fiction,
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
"No. 259, 309, 334, 411, 413."