H.S. Han1, C.W. Ma2*
Y.W. Bok3 ?
Corpoaration, 42 Hwanggyeong-ro, Incheon, South Korea
2Department of Life
Science and Biotechnology, Soonchunhyang University, Asan, 31538,
Ansan, South Korea
Author Email :
Aim: This study will
help to understand the changes in survival rate and growth of juvenile A.
vulgaris due to changing oceanic temperature. This study proved that
water temperature among environmental factors affects A. vulgaris's
developing period of secondary sexual characters, molting frequency, daily
growth, and growth ratio of post-embryonic, especially in higher water
vulgaris in South Korea were reared and analyzed under controlled
condition of at 10, 18, 25?C, (33-34 psu; 12/12 L/D) from hatching
through a series of instars. Each specimen was individually maintained during
the intermolt period, percentage increment and growth rate based on
Results: This experiment
result indicated the position of sexual molt variation related to water
temperature followed by the statement of these species sexual characters
appeared at 4th juvenile stage at 10?C, 6th
juvenile stage at 18℃ and 7th
juvenile stage at 25?C. Survival rates increased with temperature
during the first juvenile stage to last molting stage. The growth rate of A.
vulgaris at 10?C, 18?C and 25?C was
0.05, 0.09 and 0.17 mm/daily. Intermolt period and the growth rate of mean
carapace length were inversely correlated with temperature. The growth of
carapace length between abdomen to telson to the other body parts of the A.
vulgaris were significantly relative at 10?C, 18?C
and 25?C. In the 6th period.
Interpretation: This research
will help to understand the relationship between the changes in survival
rate, the growth of juvenile A. vulgaris to changing oceanic
temperature. The following research will present a strategy to maintain the
population of A. vulgaris by using shorter cycle, where it
participates in reproduction at lower temperature or delay the growth for
increasing survival ratio.
Key words: Archaeomysis vulgaris, Epibenthic, Mysidacea, Sexual characters, Survival ratio