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Influence of water salinity on the survival of embryos and growth of the sichel larvaePelecus cultratus(L.) under controlled conditions

Authors :
Dariusz Kucharczyk
Przemysław Pol
Joanna Nowosad
Roman Kujawa
Marcin Ptaszkowski
Andrzej Mamcarz
Mariusz Lach
Grażyna Furgała-Selezniow
Source :
Aquaculture Research. 48:1302-1314
Publication Year :
2016
Publisher :
Hindawi Limited, 2016.

Abstract

The purpose of this study was to analyse the influence of water salinity on the incubation of eggs and growth of the larvae of sichel Pelecus cultratus (L.) under controlled conditions. The following water salinity was considered: 3, 6, 9, 12, 15 and 0 ppt for the control. The eggs incubation time depended on the water salinity, lasting from 56.3°D [9 ppt] to 107.7°D [0 ppt]. The higher water salinity, shorter the incubation time. The highest survivability of larvae was obtained in water of the salinity equal 3 ppt and in freshwater, where respectively 87% and 84% of the larvae survived. No hatched larvae were obtained in water of the salinity of 12 and 15 ppt, as all embryos died during the experiment. Larvae were reared up for 21 days. The final body weight, depending on the water salinity, reached from 43.5 mg [9 ppt] to 74.6 mg [3 ppt], at the respective body lengths of 19.3 mm and 23.2 mm. The highest body gains and lengths of larvae were observed in water of the salinity of 3 ppt. The lowest survivability of sichel larvae occurred in water of the salinity 9 ppt, where it was only 53.2%. The survivability of larvae in freshwater and water of the salinity of 3 ppt was quite similar: 96.2% and 95.6% respectively. Water salinity degree of 12 and 15 ppt appeared to be lethal for both embryos and larvae of the sichel.

Details

ISSN :
1355557X
Volume :
48
Database :
OpenAIRE
Journal :
Aquaculture Research
Accession number :
edsair.doi...........9de201df9e866477766b44a6d687acfb
Full Text :
https://doi.org/10.1111/are.12972