Change in body size of juvenile marbled sole <Emphasis Type="Italic">Pseudopleuronectes yokohamae</Emphasis> after preservation in ethanol |
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Authors: | Jeong-Hoon Lee Keita Kodama Toshihiro Horiguchi |
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Institution: | (1) Center for Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba Ibaraki, 305-8506, Japan |
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Abstract: | We evaluated the extent of shrinkage in body size of juvenile marbled sole Pseudopleuronectes yokohamae after preservation in 70% ethanol for 6, 12, 24, or 48 h, or 4 weeks. Standard length (SL, range of the analyzed specimens:
22.82–53.01 mm) decreased by 5.6% after 12 h and body weight (BW 0.174–2.964 g) decreased 27.8% after 24 h preservation in
70% ethanol. There was no further decrease in SL or BW after 12 or 24 h of preservation, respectively. The original body size
could be estimated based on the size after preservation in 70% ethanol for 4 weeks using the following equations: SL
original = 1.05 SL
preserved + 0.37 and BW
original = 1.36 BW
preserved + 0.04. The condition factor calculated using the body size of preserved individuals was 16.0 and 15.8% lower than that calculated
from the original body size and the body size back-calculated using the linear regression equations described above, respectively.
Thus, our data suggest that the shrinkage of body size due to preservation in ethanol can cause errors in estimation of the
condition factor. Our results can be used to improve the accuracy of estimating size-related biological parameters based on
juvenile marbled sole that are preserved in ethanol. |
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Keywords: | |
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