Inst Hydroecol, Minist Water Resources, Wuhan 430072, Peoples R China; Chinese Acad Sci, Wuhan 430072, Peoples R China; IFM, GEOMAR, Leibniz Inst Marine Sci, Kiel, Germany; Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China; Chinese Acad Sci, Grad Univ, Wuhan, Hubei, Peoples R China
WOS标题词:
Science & Technology
; Life Sciences & Biomedicine
类目[WOS]:
Fisheries
; Marine & Freshwater Biology
研究领域[WOS]:
Fisheries
; Marine & Freshwater Biology
摘要:
Length measurements of preserved fishes are necessary in many types of fish surveys because logistics often do not allow for fish measurement immediately after catch. If the fixative causes significant shrinkage, then the preserved lengths cannot be directly used to indicate accurate live lengths. The objective of this study was to determine how preservation in formalin affects standard length of Gobiocypris rarus larvae (24-day-old and newly hatched), larval Procypris rabaudi (4-day-old), and larval Sinilabeo rendahli (12-day-old). Fishes were measured (to nearest 0.01 mm) and individually fixed in the appropriate formalin solution (2.5% or 5.0% formalin), then re-measured at 0.5, 1, 3, 7, 14, 30, 45 and 75 days after preservation to follow the time course of shrinkage. Most of the shrinkage occurred within the first half day after preservation. The 5.0% formalin caused a higher relative shrinkage rate than did the 2.5% solution; however, the difference was not statistically significant. In G. rarus, initial shrinkage of newly hatched larvae was higher than that of 24-day-old larvae.
英文摘要:
Length measurements of preserved fishes are necessary in many types of fish surveys because logistics often do not allow for fish measurement immediately after catch. If the fixative causes significant shrinkage, then the preserved lengths cannot be directly used to indicate accurate live lengths. The objective of this study was to determine how preservation in formalin affects standard length of Gobiocypris rarus larvae (24-day-old and newly hatched), larval Procypris rabaudi (4-day-old), and larval Sinilabeo rendahli (12-day-old). Fishes were measured (to nearest 0.01 mm) and individually fixed in the appropriate formalin solution (2.5% or 5.0% formalin), then re-measured at 0.5, 1, 3, 7, 14, 30, 45 and 75 days after preservation to follow the time course of shrinkage. Most of the shrinkage occurred within the first half day after preservation. The 5.0% formalin caused a higher relative shrinkage rate than did the 2.5% solution; however, the difference was not statistically significant. In G. rarus, initial shrinkage of newly hatched larvae was higher than that of 24-day-old larvae.
1.Inst Hydroecol, Minist Water Resources, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Wuhan 430072, Peoples R China 3.IFM, GEOMAR, Leibniz Inst Marine Sci, Kiel, Germany 4.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China 5.Chinese Acad Sci, Grad Univ, Wuhan, Hubei, Peoples R China
Recommended Citation:
Xiong, M.; Rosenthal, H.; Que, Y.; Qiao, Y.; Chang, J..Shrinkage of Gobiocypris rarus, Procypris rabaudi, and Sinilabeo rendahli preserved in formalin,JOURNAL OF APPLIED ICHTHYOLOGY,2007,23(2):173-176
