Effects of packing densities in plastic bags on survival of larvae and fry of Helostoma temmincki (C and V)

Siti Shapor Haji Siraj, . and Cheah S.H., . and Aizam Zainal Abidin, . Effects of packing densities in plastic bags on survival of larvae and fry of Helostoma temmincki (C and V). pp. 387-390. ISSN 0126-6128

Helostoma temmincki (C and V) larvae measuring 4.6 mm total length were packed in plastic bags with oxygen at stocking densities of 0 250 500 1000 and 1500/litre. Fry measuring 2.0 cm were similarly packed at densities of 0 125 250 500 and 750/litre. The fish were observed for mortality 10 minutes 24 hours and 48 hours after packing. The water quality parameters and alkalinity - were determined at 0 hours for control bags only and for all bags at 48 hours after packing. There was no mortality in all bags 10 minutes after packing. After 24 hours mortality of larvae packed at 500 1000 and 1500/litre was less than 2 whereas no mortality was observed in the lags with fry. At 48 hours mortalities of larvae were similar (P 0.05) in all bags and were less than 2. Mortalities of fry packed at 125 250 and 500/litre were similar (P 0.05) and less than 2 whereas mortality of fry packed at 750/litre was significantly different (P 00.5).

Full text available from:

Abstract

Helostoma temmincki (C and V) larvae measuring 4.6 mm total length were packed in plastic bags with oxygen at stocking densities of 0 250 500 1000 and 1500/litre. Fry measuring 2.0 cm were similarly packed at densities of 0 125 250 500 and 750/litre. The fish were observed for mortality 10 minutes 24 hours and 48 hours after packing. The water quality parameters and alkalinity - were determined at 0 hours for control bags only and for all bags at 48 hours after packing. There was no mortality in all bags 10 minutes after packing. After 24 hours mortality of larvae packed at 500 1000 and 1500/litre was less than 2 whereas no mortality was observed in the lags with fry. At 48 hours mortalities of larvae were similar (P 0.05) in all bags and were less than 2. Mortalities of fry packed at 125 250 and 500/litre were similar (P 0.05) and less than 2 whereas mortality of fry packed at 750/litre was significantly different (P 00.5).

[error in script]

Item Type:	Article
Additional Information:	2 tables; 6 ref. Summaries (En Malay)
AGROVOC Term:	PECES DE AGUA DULCE
AGROVOC Term:	EMPAQUE
AGROVOC Term:	ALEVINES
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:53
URI:	http://webagris.upm.edu.my/id/eprint/18304

Actions (login required)

View Item