๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A NEW SPECIES OF GENUS EPHEMERA (EPHEMEROPTERA: EPHEMERIDAE)

โœ Scribed by Changfa Zhou; Hong Gui; Cuirong Su


Book ID
111331328
Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
221 KB
Volume
5
Category
Article
ISSN
1672-9609

No coin nor oath required. For personal study only.


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In the newly laid egg of the mayfly Ephemera japonica, an egg nucleus (oocyte nucleus) at metaphase of the first maturation division is in the polar plasm at the mid-ventral side of the egg, and a male pronucleus lies in the periplasm beneath a micropyle situated just opposite the polar plasm or at