Effect of temperature and salinity on hatching and larval survival of yellowfin tuna Thunnus albacares

Effects of temperature and salinity on hatching rate and normal larval rate at hatching, and survival of fasting larvae after hatching (survival activity index; SAI) were investigated using spontaneously spawned eggs of captive yellowfin tuna (Thunnus albacares, YFT). Within the range of experimenta...

Full description

Saved in:
Bibliographic Details
Published in:Fisheries science 2015-09, Vol.81 (5), p.891-897
Main Authors: Kim, Yang-Su, Delgado, Darys Isabel, Cano, Ing. Amado, Sawada, Yoshifumi
Format: Article
Language:English
Subjects:
Analysis
Animal reproduction
Biomedical and Life Sciences
Eggs
Experiments
fasting
Fish & Wildlife Biology & Management
Fisheries
Fishery sciences
Food Science
Freshwater & Marine Ecology
Hatching
Laboratories
Larvae
Life Sciences
Marine
Original Article
Salinity
Seawater
Standard deviation
Studies
Survival
Temperature
Temperature effects
Thunnus albacares
Variance analysis
Water temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Effects of temperature and salinity on hatching rate and normal larval rate at hatching, and survival of fasting larvae after hatching (survival activity index; SAI) were investigated using spontaneously spawned eggs of captive yellowfin tuna (Thunnus albacares, YFT). Within the range of experimental temperatures, 23–35 °C, at 32 psu salinity, hatching and normal larval rates and SAI were highest at 23 and 26 °C. In the experiment exploring the most suitable salinity within the range 23–38 psu, 35 and 38 psu gave the highest hatching rate and normal larval rate; however, SAI was highest at 26 psu. The results of multi-factor experiments in each temperature (23, 26, and 29 °C) with each salinity (32, 35, and 38 psu) indicated interactive effects of temperature and salinity on the three indices and within the experimental ranges gave an optimal combination of 23 °C and 38 psu for YFT hatching and survival.
ISSN:0919-9268
1444-2906
DOI:10.1007/s12562-015-0901-8