Shrinkage in the Body Length of Myctophid Fish (Diaphus Slender-Type spp.) Larvae with Various Preservatives
There was significant shrinkage in the body lengths of larvae of the myctophid fish Diaphus slender-type spp. for the first two weeks after they were preserved in 5% and 10% formalin, 70% and 90% ethyl alcohol, and 70% isopropyl alcohol solutions. The shrinkage was greatest in 70% isopropyl alcohol, followed by 90% ethyl alcohol, 70% ethyl alcohol, and the formalin solutions. No significant difference in shrinkage was observed between the 5% and 10% formalin solutions. Linear regressions described the relationships between body length before and after 140 days of preservation.Abstract
Change in body length of Diaphus slender-type spp. larvae preserved in 70% and 90% ethyl alcohol, 5% and 10% formalin and 70% isopropyl alcohol. Vertical bars show two standard errors. The average shrinkage percentages after 140 days preservation were described
Contributor Notes
(MM, YW) Ocean Research Institute, University of Tokyo, 1–15–1 Minamidai, Nakano, Tokyo 164–8639, Japan; and (KM) Hokkaido National Fisheries Research Institute, 116 Katsurakoi, Kushiro, Hokkaido 085–0802, Japan. Present address: (MM) Tohoku National Fisheries Research Institute, 3–27– 5 Shinhama, Shiogama, Miyagi 985–0001, Japan. (MM) moku@affrc.go.jp. Send reprint requests to MM.