Estimation of age in the Norway ray (Rattus norvegicus Berkenhout) from the weight of the eyelens
A relationship between age and dried lens weight of Rattus norvegicus was derived by regression analysis of data from ninety-six male and and 105 female rats sacrificed at various known ages up to 18 months from birth. A single predictive equation (combining males and females) is recommended for pra...
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| Published in: | The Journal of applied ecology Vol. 20; no. 1; pp. 97 - 102 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-01-1983
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | A relationship between age and dried lens weight of Rattus norvegicus was derived by regression analysis of data from ninety-six male and and 105 female rats sacrificed at various known ages up to 18 months from birth. A single predictive equation (combining males and females) is recommended for practical use which relates eyelens weight to a transformed measure of age. The equation is log sub(10) (age + 22 days) = 1 multiplied by 313 + 0 multiplied by 021 (paired lens weight) where 22 days is the gestation period and the correlation coefficient is 0 multiplied by 96. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
| ISSN: | 0021-8901 |