SEM investigations
of the larval development of Imnadia yeyetta and Leptestheria
dahalacensis (Branchiopoda: Conchostraca)
Reprinted
from Hydrobiologia
486: 39-47 (2002), with kind permission from Kluwer
Academic Publishers
Erich Eder
Abstract
This
paper presents a SEM documentation of the larval development of the
two most abundant Austrian conchostracan species, Imnadia yeyetta
(Limnadiidae) and Leptestheria dahalacensis (Leptestheriidae).
As in several previously examined spinicaudatan species, five larval
stages were documented: Nauplius 1, Nauplius 2, Metanauplius, Peltatulus,
and Heilophore. Additionally, three postlarval stages of L. dahalacensis
and the first larval instars of Eoleptestheria ticinensis and
Limnadia lenticularis are shown and compared with the examined
stages. Species identification of conchostracan larval stages is possible
by using surface structures, and using SEM methods, except for L.
lenticularis which can be identified more easily on the characteristic
shape of the labrum.
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