LUNAR AND SEMI-LUNAR REPRODUCTIVE-CYCLES IN SOME SPINOSE PLANKTONIC FORAMINIFERS
LUNAR AND SEMI-LUNAR REPRODUCTIVE-CYCLES IN SOME SPINOSE PLANKTONIC FORAMINIFERS
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DOI：
10.2113/gsjfr.20.2.117
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发表时间：
1990-04-01
影响因子：
1.1
通讯作者：
HEMLEBEN, C
中科院分区：
文献类型：
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作者：
BIJMA, J;EREZ, J;HEMLEBEN, C
有刺浮游有孔虫的生殖周期似乎与不同的月相有关。基于浮游生物网拖曳的时间序列，证明了gloigerinoides sacllifer （Brady）的月相生殖周期。Globigerinoides rubber （d " Orbigny）和Globigerinella siphonifera （d " Orbigny）的生殖周期具有半月周期的特征。在红海和西北大西洋的科学巡航中收集的样本以及在加勒比海的许多蓝水潜水中收集的样本支持了这些观察结果。物种间寿命的差异导致了不同的空壳输出。因此，沉积物不能反映水柱中的情况。沉积物中保存的相对丰度并不是物种之间繁殖潜力差异的主要指示，而必须从根本上解释为繁殖周期之间的差异。这些结果对沉积物分析的解释和古海洋学的意义产生了影响。繁殖之前通常会形成一个非典型的终腔。时间和频率相关性表明，这些形态与生殖过程有关，但不是配子体发生的先决条件。
Reproductive cycles of spinose planktonic foraminfera appear to be related to distinct phases of the moon. Based on a time series of plankton-net tows, a synodic lunar reproductive cycle is demonstrated in Globigerinoides sacculifer (Brady). The reproductive cycles of Globigerinoides ruber (d''Orbigny) and probably Globigerinella siphonifera (d''Orbigny) are characterized by a semi-lunar periodicity. Samples collected during scientific cruises into the Red Sea and the northwest Atlantic Ocean and many blue water SCUBA dives in the Caribbean Sea support these observations. Inter-species differences in the lifespan result in a different empty shell output. As a consequence, the sediment does not reflect the situation in the water column. The relative abundances that are preserved in the sediments are not primarily indicative of variations in the reproduction-potential between species, but must fundamentally be interpreted as discrepancies between reproductive cycles. These results yield consequences for the interpretation of sediment analyses and implications for paleoceanography. Reproduction is often preceded by the formation of an atypical final chamber. Time and frequency correlations demonstrate that these morphotypes are associated with the reproductive process but are not a prerequisite for gametogenesis.