Genetic selection for shell traits in the Japanese pearl oyster, Pinctada fucata martensii

Realized Heritability and Genetic Gain Estimates of Larval Shell Length in the Chinese Pearl Oyster Pinctada martensii at Three Different Salinities

“…Despite negative larval response to selection for fast growth in the northern quahog Mercenaria mercenaria (Heffernan et al 1991), most studies have reported significant and positive selection responses in other shellfish species, such as the American oyster Crassostrea virginica (Newkirk et al 1977;Ragone Calvo et al 2003), the Pacific oyster C. gigas (Gosling 1982;Langdon et al 2003), the Chilean oyster Ostrea chilensis (Toro and Newkirk 1991), the Japanese pearl oyster P. fucata martensii (Wada 1986), the catarina scallop Argopecten ventricosus (Ibarra et al 1999), and the bay scallop A. irradians irradians (Zheng et al 2004(Zheng et al , 2006. Some studies have reported genetic variation in pearl oyster stocks (Wada 1986;Yu and Chu 2006). For example, after three generations of selection in a stock of Japanese pearl oysters, heritability (h 2 ) values of shell width and shell convexity were 0.467 and 0.350, respectively (Wada 1986).…”

“…Some studies have reported genetic variation in pearl oyster stocks (Wada 1986;Yu and Chu 2006). For example, after three generations of selection in a stock of Japanese pearl oysters, heritability (h 2 ) values of shell width and shell convexity were 0.467 and 0.350, respectively (Wada 1986). By using amplified fragment-length polymorphism markers, Yu and Chu (2006) reported that genetic diversity of Daya, Saya, and Beibu cultured stocks of the Chinese pearl oyster were 0.378, 0.377, and 0.378, respectively.…”

Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth

“…The most frequently studied trait is growth, which represents almost 93% of genetic parameter estimations in marine mollusks (Dégremont, 2003). A large number of studies found significant heritability for juvenile and adult growth among a variety of clam, mussel, oyster and scallop species (Lannan, 1972;Haley et al, 1975;Wada, 1984Wada, , 1986Wada, , 1994Mallet et al, 1986;Strömgren and Nielsen, 1989;Hilbish, 1990, 1991;Newkirk, 1990, 1991;Crenshaw et al, 1991;Hadley et al, 1991;Hilbish et al, 1993;Jarayabhand and Thavornyutikarn, 1995;Toro et al, 1995;Crenshaw et al, 1996;Toro and Parades, 1996;Ibarra et al, 1999;Brichette et al, 2001;Ernande et al, 2003;Zheng et al, 2004). Even though survival is usually considered a trait difficult to improve through genetic selection (Gjedrem, 1985), a number of papers have reported a significant genetic basis for survival in C. gigas (Beattie et al, 1980;Hershberger et al, 1984, Soletchnik et al, 2002Ernande et al, 2004).…”

Genetic variation of hatchery and wild stocks of the pearl oyster Pinctada fucata martensii (Dunker, 1872), assessed by mitochondrial DNA analysis

“…Earlier studies on Japanese Akoya pearl oysters (P. fucata martensii) showed that selection based on commercial traits can reduce genetic variability within cultured populations of this species (Wada 1986). Similarly, Durand et al (1993) found a reduction in allelic diversity in black-lip pearl oysters (P. margaritifera) after three generations of culture.…”