Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8626906 | Zoologischer Anzeiger - A Journal of Comparative Zoology | 2017 | 28 Pages |
Abstract
Observations on the entire life cycle of most scorpion species are scarce. Here, we present precise data of the embryonic and postembryonic development for Lychas tricarinatus with additional notes on Tityus trivittatus. By rearing captive-born Lychas tricarinatus specimen from the Odisha province (India) in isolation until maturation, we could show that virgin females gave birth to offspring proving that specimens are capable of parthenogenetic reproduction. Further, we describe an all-female population of Tityus trivittatus from the Corrientes province (Argentina), which originated from a fully bi-sexual population. In addition we describe the ontogenetic development of these two parthenogenetic, buthid scorpions under laboratory conditions. The Dyar's constant was evaluated for the carapace, metasomal segment V, and the movable finger of the pedipalp among the instars. The calculated growth factor has a total grand average of 1.26. Lychas tricarinatus females reached maturity after 220Â days postembryonic development. Moreover, L. tricarinatus females started to reproduce in the 6th or 7th instar and gave birth to an average of 21 neonates after 96Â days of embryonic development. Tityus trivittatus matured in the 5th or 6th instar and gave birth after 230Â days to an average of 13 neonates.
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Authors
Michael Seiter, Mark Stockmann,