Publication Date:
2021-07-16
Description:
Marine polychaete worms living in different beds from coastal areas, so different cultures can be different effects on their development. The evaluation of this research initially, marine polychaete worms were collected in low tidal sea areas from Gulf Persian coast in Bushehr. During several stages of sampling do more than 2000 pieces of worm were taken and then transferred to Bandarga Shrimp Research Station (Iran Shrimp Research Center). So based on an observation the desired species identification (Perinereis nuntia). Then 400 pieces worm selected and transferred to tanks maintain immature worm (fiberglass tanks with dimensions of 2×2×0.5 m with 15 cm sand on floor). The results showed that even the worms (P. nuntia) in vitro reached sexual maturity able to spawn in captivity conditions and were absolute fecundity of 16010 ± 17630 eggs. After incubation eggs, larval culture into the plastic tank with 70 cm diameter, larval (1.5 to 2 mm) were introduced with density 2000 (pieces/m^2). In this research used to three different beds (tidal, filled with water all of time and wet bed) with three different food types (food shrimp, seaweed and vegetable waste), so there were 9 experimental treatments. All experimental treatments harvested and estimate production in each of them after 270 days. The seaweed tidal treatment with amount of 21.17 g/m^2 had best results and the all of wet treatments with 0 g/m^2 was the lowest production. Compare of beds showed that the tidal treatments have significant difference with other beds in growth factors (e.g. mean weight, survival percentage and total production) (P〈0.05). And for effect of food kind on growth factors, the result of difference foods in tidal treatment were analyzed. According this mater any treatments have no significant difference together in growth factors (e.g. mean weight, survival percentage and total production) (P〉0.05).
Keywords:
Aquaculture
;
Iran
;
Persian Gulf
;
Bushehr Province
;
Propagation
;
Culture
;
Marine
;
Worm
;
Perinereis nuntia
;
Polychaete
;
Sampling
;
Shrimp
;
Perinereis nuntia
;
Immature
;
P. nuntia
;
Sexual maturity
;
Survival percentage
Repository Name:
AquaDocs
Type:
monograph
Format:
application/pdf
Format:
application/pdf
Format:
76
