Experimental hybridization and genetic identification of Pacific abalone Haliotis discus hannai and green abalone H. fulgens

Characterization of the complete mitochondrial genome of Pacific abalone Haliotis discus hannai

“…Pacific abalone Haliotis discus hannai is an economically important shellfish (Haliotidae, Gastropoda) in China, the production has reached 110,380 tons in 2013, which accounts for over 79% of the world abalone aquaculture output (Guo et al 2017). In recent years, in order to improve yield, crossbreeding was used between Pacific abalone and other abalone (You et al 2015), resulting in the contamination of Pacifc abalone germplasm. Thus, improving the molecular biology of Pacific abalone to facilitate germplasm management is extremely urgent.…”

Aquaculture potential of Bohai Red and its hybrid withAgropecten irradians concentricusin southern China

“…High mortality was observed in Bohai Red with the increasing temperature demonstrating that thermal stress may also be the primary challenge for the introduction of Bohai Red, and it may not be suitable for direct introduction to southern China where the maximum water temperature reaches 32°C in summer. However, the hybrids between A. irradians concentricus and Bohai Red are adaptable to south water which suggests that ability of hybrids to tolerate the high temperatures was increased through hybridization.Same results had appeared in Haliotis discus hannai × H. fulgens (You et al, 2015), red abalone♀ × Pacific abalone♂(Cruz, Gallardo-Escárate, 2011)and Argopecten purpuratus × Argopecten irradians (Cruz, Gallardo-Escárate, 2011). The hybrids could change physiological status to get more resistant to disease and thermal stresses than their parents(Liang et al, 2014; Nan et al, 2016).…”

“…Although the mechanism of heterosis still remains enigmatic (Wang et al, 2017; Wang et al, 2011), hybridization is considered as one of the most effective methods for genetic improvement in livestock and plant production. In aquaculture, hybridization has been extensively applied to enhance growth rate, survival rate, and environmental tolerance in the oyster (Hedgecock et al, 1995; Kong et al, 2017), abalone (You et al, 2009; You et al, 2015) and scallop (Cruz, Ibarra, 1997; Cruz et al, 1998; Wang et al, 2011). For example, due to high-temperature tolerance and accelerated growth rate, the Penglai red hybrid between Chlamys farreri and Patinopecten yessoensis was commercially introduced in China in 2003 (Sun et al, 2004; Yang et al, 2004).…”

Growth performance and biochemical composition of the oysters Crassostrea sikamea , Crassostrea angulata and their hybrids in southern China

“…Additionally, the hybrids showed a greater survival rate than the Portuguese oyster progeny. Our results demonstrated that hybrid adults compared with female parent exhibit single‐parent heterosis (You et al., ) in growth, but not in survival. In fact, many interspecific hybrid oysters are known to exhibited hybrid inferiority.…”