Nucleotide Pools in the Eggs of Emma Field Cricket, Teleogryllus emma, and Two-Spotted Cricket, Gryllus bimaculatus(Orthoptera : Gryllidae)

Abstract

Oxygen consumption in the eggs of two-spotted cricket, Gryllus bimaculatus (non-diapause species) increased gradually with embryonic development, but in the eggs of emma field cricket, Teleogryllus emma (diapause species) it decreased after diapause initiation. The contents of ATP, GTP, UTP and CTP in the eggs of two-spotted cricket increased throughout embryonic development. On the other hand, the contents of four triphosphates in the eggs of emma field cricket increased during the period of pre-diapause, but decreased after diapause initiation. In particular, the decrease of UTP and CTP was conspicuous at diapause initiation. The contents of UTP and CTP also increased at early stages of diapause development and embryonic development. UTP and CTP in the eggs of emma field cricket might play an important role in the regulation of early embryonic development, intervening diapause.