The growth,development and sexual maturity of pond-reared Penaeus monodon

Comparison of ovarian maturation and spawning after unilateral eyestalk ablation of wild-caught and pond-reared Penaeus monodon

“…Primavera (1978) indicated that the degree of shrimp maturation was related to female size. Chotipuntu et al (2013) found that the BW at first maturation in wild P. monodon females was about 78 g, whereas Huang et al (2013) reported that the BW of sexually matured pond-reared P. monodon females was over 75 g. Similarly, the present study showed that ovarian maturation occurred when the BW of pond-reared females reached 80 g, and the maturation rate increased with the increase of BW in pond-reared females. This may suggest that the minimum requirement of the BW of pond-reared females is 80 g for normal ovarian maturation, and larger BW may be advantageous for ovarian maturation in pond-reared P. monodon females.…”

Comparison of stress tolerance of hybrid and selfed offspring of two populations of Litopenaeus vannamei

“…It is generally believed that heritability is relatively low and it is relatively di cult to improve traits through breeding (Bulmer MG 1991). The research on the stress resistance of Penaeus monodon (Huang et al 2012), Macrobrachium rosenbergii (Thanh et al 2010) and Penaeus chinensis (Li et al 2005) shows that the stress resistance of some aquatic animal has high heritability, which can be improved through breeding. This study used the average mortality rate and hybrid advantage of families under high ammonia-N, high pH, and low salt stress for 96 h as evaluation indicators, and screened out superior populations (MM and MT), as well as high ammonia-N and high pH families (TT2) and low salt families (MM10).…”

“…Ammonia-N, pH, and salinity are important environmental factors in the shrimp farming environment, and a good marine environment is a prerequisite for the sustainable development of marine aquaculture. However, due to the deterioration of the marine environment, especially in coastal areas, the water environment pollution caused by highdensity aquaculture and the mutation of the aquaculture water environment caused by many external factors (especially rainstorm, typhoon, cold wave and other adverse weather), the stress induced diseases of cultured shrimp occur frequently, and such problems have not been effectively solved yet (Huang et al 2012). Adverse environmental factors can disrupt the original physiological balance of organisms, and long-term environmental pressure can cause irreversible damage to organs and tissues, even leading to the death of organisms, directly leading to high mortality rates and huge economic losses (Chen et al 1995;Chen and Chen 2003; Dunier and Siwicki 1993).…”

Effect of vitamin E on spermatophore regeneration and quality of pond‐reared, black tiger shrimp ( Penaeus monodon )

“…Determination of the total number of spermatozoa in the male shrimp (Huang et al, 2013): take one of the spermatophore into the glass homogenizer, add 1 ml of seawater prepared with calcium ion solution, mashed sperm, quantitative to 10 ml, with the preparation of seawater calcium ion solution diluted 10 to 100 times, mixed evenly absorb a small amount of dilution with medical blood cell count plate count, 250 times the microscope to count any three large (16 small grid) sperm count, whichever is the average, available. The total number of spermatozoa out of 1 ml.…”

“…Studies on the reproductive system of P. monodon are concentrated in anatomy, histology and spermatogenesis and ultrastructure in the past (Hong et al, 1998;Huang, Ma, & Zhou, 2005, 2006Huang, Yang, & Ma, 2013;Jiang, He, & Lv, 2000;Jiang et al, 2013;Yang et al, 2011). There are few studies on the influencing factors of sperm development, spermatophore regeneration and sperm quality.…”