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首页> 外文期刊>Brazilian Archives of Biology and Technology >Gladius and Statolith as Tools for Age and Growth Studies of the Squid Loligo plei (Teuthida: Loliginidae) off Southern Brazil
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Gladius and Statolith as Tools for Age and Growth Studies of the Squid Loligo plei (Teuthida: Loliginidae) off Southern Brazil

机译：Gladius和Statolith作为巴西南部海域鱿鱼Loligo plei（Teuthida：Loliginidae）的年龄和生长研究的工具

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摘要

Statolith and gladius were investigated for their suitability as tools for age and growth studies in the loliginid squid Loligo plei off southern Brazil. Statoliths when polished, revealed a series of concentric increments deposited around a nucleus.Consistent increment counts covered the squid's entire life-time and could be considered suitable for individual age estimation. Growth increments were observed on the dorsal surface as delimited by consecutive marks formed during low growth periods. Because early growth was masked during chitin deposition, total increment counts underestimated individual age. Gladius growth was highly correlated with somatic growth, and gladius increments could be used to reconstruct individual growth histories. Both Statolith and gladius increments were deposited with the same, possibly daily, periodicity. It could be inferred that L. plei off southern Brazil might live up to around nine months of age.
机译：研究了石笋和格拉迪乌斯是否适合作为巴西南部外来的鱿鱼Loligo plei的年龄和生长研究的工具。蜡石经抛光后，揭示出一系列围绕核沉积的同心增量，持续的增量计数覆盖了鱿鱼的整个生命周期，可以认为适合个体年龄的估计。在背侧表面观察到生长增量，该生长增量由在低生长时期形成的连续标记所界定。由于几丁质沉积过程中早期生长被掩盖，因此总增量计数低估了个体年龄。 Gladius的生长与体细胞的生长高度相关，而gladius的增量可用于重建个体的生长历史。 Statolith和Gladius增量均以相同的周期（可能每天）进行沉积。可以推断巴西南部的普氏乳杆菌可能活到大约9个月大。

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