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首页> 外文期刊>Estuarine Coastal and Shelf Science >Growth rates of the infaunal bivalve Soletellina alba (Lamarck, 1818) (Bivalvia: Psammobiidae) in an intermittent estuary of southern Australia
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Growth rates of the infaunal bivalve Soletellina alba (Lamarck, 1818) (Bivalvia: Psammobiidae) in an intermittent estuary of southern Australia

机译：在澳大利亚南部间歇性河口处，臭名昭著的双壳类白菜Soletellina alba（Lamarck，1818）（双壳纲：Psammobiidae）的增长率

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Caging and a mark―recapture design were used to estimate the growth rate of the brittle, infaunal bivalve Soletellina alba in the Hopkins River estuary. The growth of both caged and uncaged individuals was monitored at three sites near the mouth of the estuary over 180 days. Growth rates did not differ for caged and uncaged bivalves, or for bivalves subject to different amounts of handling, or between sites. Growth did differ between consecutive time intervals, which was attributable to negligible growth occurring during the colder months of autumn/winter. Comparisons of the condition (as indicated by total mass for length~3) of S. alba were inconsistent between sites for caged and uncaged bivalves and for those subject to different amounts of handling. Soletellina alba is a rapidly growing bivalve with mean growth rates for the three time intervals being 0.04 +- 0.002 mm day~(-1) in summer, 0.02 +- 0.001 mm day~(-1) in autumn and 0.03 +- 0.001 mm day~(-1) from summer to winter. Using existing literature, it was shown that a significant relationship exists between maximum shell length and onset of sexual maturity in bivalve molluscs. This relationship predicts that 5. alba should reach the onset of sexual maturity at 15.8 mm length. Therefore, it appears that it may be possible for juvenile 5. alba (<1 mm) to grow, reach sexual maturity and reproduce in between annual mass-mortality events caused by winter flooding.
机译：笼养和标记捕获设计被用来估计霍普金斯河河口脆性，臭名昭著的双壳类Soleletina alba的生长速率。在180天的时间内，在河口附近的三个地点监测了笼养和未笼养个体的生长。笼养和未笼养的双壳类，或受到不同处理量的双壳类，或站点之间的生长率没有差异。在连续的时间间隔之间，生长确实有所不同，这归因于在秋冬较冷的月份中发生的生长可忽略不计。笼养和未笼养的双壳类和不同处理量的双壳类之间的条件比较（以长度〜3的总质量表示）是不一致的。 Soletellina alba是一种快速生长的双壳类动物，三个时间间隔的平均生长速率分别为夏季0.04±0.002 mm〜（-1），秋季0.02±0.001 mm ~~（-1）和0.03±0.001 mm从夏季到冬季的一天〜（-1）。使用现有文献，表明双壳软体动物的最大壳长与性成熟期之间存在显着关系。这种关系预示着5.晨曲应该在15.8毫米长处达到性成熟期。因此，看来5. alba（<1 mm）幼鱼有可能生长，达到性成熟并在冬季洪水造成的年度大规模死亡事件之间繁殖。

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