| Abstract: | Shell-length growth in Macoma balthica from San Francisco Bay, California, as measured on living animals in situ, is highly seasonal despite a mild Mediterranean climate: a long period of near non-growth from May to the following February is followed by a short period of rapid growth between March and May. The rapid-growth period follows the spawning period during January/February and ends as water temperature rises above about 15??C. Despite the shortness of the growth period, M. balthica grows larger at a given age in San Francisco Bay than is recorded elsewhere in the world. Application of a model, developed elsewhere from these same field measurements, shows that (1) measurable growth occurs during the summer/autumn/early winter "nongrowth" period, (2) there is an autumn recruitment, and (3) both spring and autumn recruits combine to form a single "one-year-old" size grouping. None of these features is detectable through growth-ring analysis of field samples, apparently because of indistinct climatic seasons, or through size-frequency histogram analysis because of the combined effects of slow growth and intermittent recruitment. ?? 1982 Estuarine Research Federation. |
| Genre: | Article |
| ProdID: | 70011811 |
| Citation Author: | Nichols, F. H.; Thompson, J. K. |
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| Citation End Page: | 120 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Estuaries |
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| Citation Number Of Pages: | 11 |
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| Citation Search Results Text: | Seasonal growth in the bivalve Macoma balthica near the southern limit of its range; 1982; Article; Journal; Estuaries; Nichols, F. H.; Thompson, J. K. |
| Citation Start Page: | 110 |
| Citation Volume: | 5 |
| Citation Year: | 1982 |
| Type: | citation/reference |
| Text: | Seasonal growth in the bivalve Macoma balthica near the southern limit of its range; 1982; Article; Journal; Estuaries; Nichols, F. H.; Thompson, J. K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/BF02803410 |
| Date Other: | Fri, 1 Jan 1982 00:00 -0600 |
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