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Genetic Diversity In U.S. Hatchery Stocks Of Crassostrea Ariakensis (Fujita, 1913) And Comparison With Natural Populations In Asia, Jie Xiao, Jan F. Cordes, Ja Moss, Kimberly S. Reece
Genetic Diversity In U.S. Hatchery Stocks Of Crassostrea Ariakensis (Fujita, 1913) And Comparison With Natural Populations In Asia, Jie Xiao, Jan F. Cordes, Ja Moss, Kimberly S. Reece
VIMS Articles
Although several different U.S. hatchery stocks of the Asian Suminoe oyster Crassosirea ariakensis were used in laboratory and field trials assessing performance, and in comparative studies with the native oyster Crassostrea virginica, the genetic composition of these hatchery stocks has not yet been examined comprehensively. Using eight microsatellite markers we investigated the genetic variability among five hatchery stocks and compared the genetic makeup of these stocks with 8 wild populations from Asia. Results showed significant genetic differentiation among the 5 hatchery stocks that was 6-fold larger than that observed among wild populations. A significant reduction in genetic diversity was observed …
Observations On The Early Life History And Growth Rates Of Juvenile Channel Whelks Busycotypus Canaliculatus (Linnaeus, 1758), Juliana Harding
Observations On The Early Life History And Growth Rates Of Juvenile Channel Whelks Busycotypus Canaliculatus (Linnaeus, 1758), Juliana Harding
VIMS Articles
Channel whelks (Busycotypus canaliculatus) were cultured from hatch through 171 days to describe the early life history and growth rates of juveniles. Whelks began to hatch at water temperatures of 15-18 degrees C. Channel whelks grew quickly from average shell lengths (SL) at hatch of 3.8 mm (SE = 0.1) to an average of 48.4 mm SL (SE = 1.3, n = 42 individuals) at 171 days post-hatch. The largest individual reached 53.2 mm SL, a gain of similar to 49.4 mm SL in 171 days, with a growth rate of 0.29 mm/day. Juvenile whelks readily consumed oyster (Crassostrea virginica) …