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本邦產マイワシの硏究―5 : 脊椎骨組成のx²比較の硏究(2)


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Title: 本邦產マイワシの硏究―5 : 脊椎骨組成のx²比較の硏究(2)
Other Titles: Studies on the Japanese Sardine(V) Study on the x²-method of Vertebral Compositions (2) / 本邦産マイワシの研究―5 : 脊椎骨組成のX^2比較の研究(2)
Authors: 田村, 修
Authors (alternative): Tamura, Osamu
Issue Date: 28-Feb-1957
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.4, pp.77-85; 1956
Abstract: The χ²-method of vertebral composition reported formerly (χ²=ΣN₁N₂×(fi/N₁-fi'/N₂)²/fi+fi') is applied to all samples in 1952 of each locality by using the data from each of Regional Fisheries Research Laboratories and the results are discussed comparing with those from the χ²-comparisons between their types, their analysis of variances and their test of non-correlation. 1. The A type of higher mean vertebral count exists in each shoal from each locality catched by each fishing net. 2. The B type of lower mean vertebral count exists in some shoals of 1952, but there are some differences of shoals containing B type between 1951 and 1952. 3. The adequate method to classify samples into types of vertebral compositions is as follows: (1) classify each sample of each year class from each locality catched by each fishing net into several types using the χ²-method between each sample according to the method as reported formerly (the degree of free dom 2, significance level 20%), (2) compare these presumed types with each other fusing the classes show ing individuals smaller than 5by using the same formula at the probability rate of 95%, (3) and use the test of non-correlation by SATO only when the remained class is 1.
URI: http://hdl.handle.net/10069/32021
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第4号

Citable URI : http://hdl.handle.net/10069/32021

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