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Growth parameters of whiteleg shrimp Litopenaeus vannamei and red seaweed Gracilaria corticata in integrated culturing method under zero water exchange system
Author(s) -
Fourooghifard Hojjatollah,
Matinfar Abbas,
Mortazavi Mohammad Seddiq,
Roohani Ghadikolaee Kiuomars,
Mirbakhsh Maryam
Publication year - 2017
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13335
Subject(s) - litopenaeus , shrimp , biology , zoology , fishery , algae , feed conversion ratio , factorial experiment , seawater , growth rate , botany , body weight , ecology , mathematics , statistics , geometry , endocrinology
Growth parameters of whiteleg shrimp Litopenaeus vannamei and red seaweed Gracilaria corticata were measured using integrated culturing method under zero‐water exchange system in a 45‐day period. A 2 × 3 factorial design was used with two levels of shrimp stocking densities and three levels of seaweed weight densities. G . corticata was cultured on a net tied to a round polyethylene frame. Culture tanks were filled with 750‐L filtered seawater. A 40‐W compact fluorescent lamp was hung over each tank to provide adequate and sufficient light for seaweed growth. Growth parameters of shrimp and seaweed such as specific growth rate ( SGR ), weight gained ( WG ) and average daily growth (ADG) were computed based on the initial and final weight of shrimp and seaweed. The maximum and minimum SGR of L. vannamei (1.97 and 1.69%/day) were observed in treatment S 1 A 3 (25 shrimp/m 2 and 400 g seaweed/m 2 ) and S 2 A 1 (50 shrimp/m 2 without seaweed) respectively. The best survival rate (94.67 ± 1.33%), WG (129.9 ± 2.9%) and feed conversion ratio (1.67 ± 0.04) were also observed in treatment S 1 A 3 . The SGR of G.corticata in the treatment S 1 A 3 (1.97 ± 0.00%/day) was significantly higher, compared to others. Strong positive correlations were obtained between the density of G. corticata and the growth parameters of L. vannamei . The red seaweed G. corticata could boost the growth parameters, survival rate and total production of L . vannamei under zero‐water exchange system.