concept of quantitative reproductive senility: application to the hard clam, Mercenaria mercenaria (L.)?

Quantitative reproductive senility occurs when older age classes achieve less reproductive effort than expected from the allometric (power) curve relating body size to reproductive effort among younger adults. Quantitative senility can be detected by analyzing whether age explains any of the residua...

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Published in:Oecologia 1983-01, Vol.58 (2), p.164-168
Main Author: Peterson, C.H
Format: Article
Language:English
Subjects:
Age
Age structure
Allometry
Aquatic invertebrates
Arias
Body size
Clams
Gametes
Gonads
Linear regression
Marine
marine environment
Mercenaria mercenaria
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description Quantitative reproductive senility occurs when older age classes achieve less reproductive effort than expected from the allometric (power) curve relating body size to reproductive effort among younger adults. Quantitative senility can be detected by analyzing whether age explains any of the residual variance around the linear regression of log reproductive effort on log body size among all adults. In each of two collections of M. mercenaria made early in successive (1980 and 1981) breeding seasons, variation in mass of gonads (reproductive effort) was better explained by clam length than by clam age, and age failed to explain a significant amount of residual variance in the regression of log gonad mass on log body length. Among M. mercenaria from North Carolina (USA) up to age 19, there is no evidence of either absolute or quantitative reproductive senility.
doi_str_mv 10.1007/BF00399212
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source JSTOR Archival Journals and Primary Sources Collection; SpringerLink Online Journals Archive Complete
subjects Age
Age structure
Allometry
Aquatic invertebrates
Arias
Body size
Clams
Gametes
Gonads
Linear regression
Marine
marine environment
Mercenaria mercenaria
title concept of quantitative reproductive senility: application to the hard clam, Mercenaria mercenaria (L.)?
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