A preliminary study in the use of RAPD markers in detecting genetic differences in hatching patterns of Chirocephalus diaphanus Prevost, 1803 (Crustacea: Anostraca)

摘要

Randomly amplified polymorphic DNA (RAPD) was used to detect intra-clutch genetic differences of the anostracan Chirocephalus diaphanus Prevost, 1803. Thirty primers were tested on 130 nauplii from three different clutches. Two primers produced five repeatable and well-defined amplifcation products, that were used as genotype markers. Nauplii hatched after three successive dehydration and rehydration cycles. Consistent genetic differentiation was observed among nauplii from the same clutch. Signficant association between presence or absence of three polymorphic amplification products and hatching after different stimuli was observed. These results suggest that RAPD markers might be related to the difference in nauplii hatching and provide reasonable support to the hypothesis that the source of the observed variation in hatching phenology are genetic as well as epigenetic.