Influences of sex and seasons on levels of heavy metals in tissues of green tiger shrimp (Penaeus semisulcatus de Hann, 1844)

2007 ◽  
Vol 101 (4) ◽  
pp. 1664-1669 ◽  
Author(s):  
A YILMAZ ◽  
L YILMAZ
2020 ◽  
Vol 147 ◽  
pp. 104253 ◽  
Author(s):  
Ramachandran Ishwarya ◽  
Arokiadas Iswarya ◽  
Vijayaragavan Thangaviji ◽  
Jayachandran Sivakamavalli ◽  
Maria Angeles Esteban ◽  
...  

2016 ◽  
Vol 51 ◽  
pp. 220-228 ◽  
Author(s):  
Ramachandran Ishwarya ◽  
Sangily Jayanthi ◽  
Perumal Muthulakshmi ◽  
Mahalingam Anjugam ◽  
Rengarajan Jayakumar ◽  
...  

2017 ◽  
Vol 26 (2) ◽  
pp. 23-34
Author(s):  
Lafi S Alsolami and Hassan A Jastania Lafi S Alsolami and Hassan A Jastania

The present study was undertaken to investigate some biological aspects of the green tiger shrimp Penaeus semisulcatus in order to provide the biological information required for its proper management of the fishery in Jizan area, Red Sea. Growth parameters were calculated as (L∞ = 94.40; K = 0.81; to = -0.2); maximum age tmax = 3.7037 years; growth performance indices (ØL = 3.86; Øwt = 1.36). Carapace length at which P. semisulcatus females attained 50% of maturity was 38 mm. The annual mortality coefficients were (Z = 3.124 year-1; M = 1.163 year-1 & F = 1.961 year-1). Carapace length and age at first capture were 35.73 mm and 0.387 year, while carapace length and age at recruitment were 28.52 mm and 0.24 year, respectively. The length at first sexual maturity was found to be 38 mm, while the carapace length at first capture L50 was estimated as 35.73 mm .This indicates that there is a poor opportunity for the recruits of P. semisulcatus in Jizan area to spawn before fishing which is considered an important factor that would lead to overexploitation the stock. The estimated exploitation ratio (0.628) was higher than Emax (0.581) which indicates that, the fisheries status of this species under study is in overexploited.


2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Muhammad Iqbal Djawad ◽  
Nova Bertha

Study of the mangrove oyster (Crassostrea sp) to reduce heavy metal (Cu) concentration on shrimp pond water and the black tiger shrimp’s (Penaeus monodon) body was conducted during ten days. Variable used in this research was the efficiency level of mangrove oyster as a treatment in the Cu contaminated waters to reduce the level of the Cu concentration. Survival and specific growth rate of shrimp were also observed and measured. Histological condition of the fish especially gills was also observed to determine the level of dama ge caused by Cu. The results showed that oysters (Crassostrea sp) were a proper type of organisms used as bio-treatment in reducing Cu not only in the shrimp pond water but also in the body of the shrimp.Oysters we re able to reduce heavy metals Cu concent ration up to 78% level to the normal level of heavy metal Cu for black tiger shrimp. Keywords: Mangrove Oyster, Shrimp, Efficiency Level, Copper


Sign in / Sign up

Export Citation Format

Share Document