GROWTH AND SURVIVAL OF SEAHORSE (Hyppocampus barbourie) LARVAE REARED UNDER DIFFERENT TEMPERATURE LEVELS
ABSTRACT: Temperature is
one of the
water quality parameters
which significantly affect
growth and survival of aquatic
species particularly at early stages. The study is intended to evaluated growth
and survival of
seahorse (H. barbourie)
reared under different
temperature levels. Experimental containers were
12 L capacity
buckets filled with
5 L sterile
treated seawater, equipped
with aeration system, a
shelter and thermostat.
Two days old
healthy seahorse larvae
were stock at density 1 ind/L. The larvae were fed with
enriched Artemia nauplii at density of 1 – 2 ind/mL once per day
after water exchange.
Temperature levels examined
in the study
as treatment were
26oC (A), 29oC (B) and 32oC (C) and each treatment was triplicate.
To determine effect of temperature on growth
and survival rate
of seahorse larvae,
the data were
analyzed statistically. Growth
of larvae reared at
different temperature varied
greatly both in
absolute growth in
weight (g) and absolute growth in length (cm).
Statistical analysis results indicated absolute growth in weight (g) and length
(cm) of larvae
reared at 26ºC
significantly higher than
those larvae reared
in temperature 29ºC and
32ºC. Meanwhile, survival
rate (%) of
seahorse larvae reared
at different temperature
levels vary considerably but
statistically not significant different. Results of the study suggested that
rearing of seahorse
(H. barbourie) larvae
at temperature level
of 26oC will
give better results in terms of absolute growth in weight and length, as
well as survival rate (%) of the larvae compared to other two temperature (29oC
and 32oC) examined in this study.
Author: Irfan Ambas
Journal Code: jpperikanangg090006
Artikel Terkait :
Jp Perikanan gg 2009
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