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Effects of temperature on the embryonic development of the striped trumpeter (Latris lineata Bloch and Schneider, 1801)

Citation

Bermudes, M and Ritar, AJ, Effects of temperature on the embryonic development of the striped trumpeter (Latris lineata Bloch and Schneider, 1801), Aquaculture, 176, (3-4) pp. 245-255. ISSN 0044-8486 (1999) [Refereed Article]

DOI: doi:10.1016/S0044-8486(99)00117-9

Abstract

Eggs collected from females of striped trumpeter (Latris lineata) that were induced to ovulate with LHRHa were inseminated and incubated at six different temperatures ranging from 8.1 to 18.1°C. Mortality was recorded for four embryonic periods (I: cell cleavage, II: epiboly, III: organogenesis and IV: organogenesis-growth). A power law was used to approximate the relationship between temperature and developmental time to four stages of embryonic development (visible peripheral periblast, yolk plug closure, heart beat and hatching). These models may have application for the ageing of striped trumpeter eggs. The time taken for 50% of embryos to hatch at 8.1, 10.5, 12.3, 14.1 and 16.2°C was 13.0, 8.7, 6.4, 5.1 and 4.1 days, respectively. Embryos incubated at 18.1°C developed abnormally and almost all died during epiboly. Embryonic mortality was high during epiboly at 8.1, 16.2 and 18.1°C and during organogenesis-growth at 8.1°C. Survival to hatch was highest at 10.5, 12.3 and 14.1°C The standard length and body depth at vent at hatching decreased with increasing temperatures but yolk volume was largest at 12.3°C. The optimal temperature range for the incubation of striped trumpeter eggs was 10.5 to 12.3°C, which is close to the mean sea-surface temperature during the spawning season (11.42 12.66°C) and the ambient temperature experienced by the broodstock at spawning (11°C).

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:Ritar, AJ (Associate Professor Arthur Ritar)
ID Code:16888
Year Published:1999
Web of Science® Times Cited:28
Deposited By:TAFI - Marine Research Laboratory
Deposited On:1999-08-01
Last Modified:2011-08-05
Downloads:0

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