New Insights into Polychaete Traces and Fecal Pellets: Another Complex Ichnotaxon?
New Insights into Polychaete Traces and Fecal Pellets: Another Complex Ichnotaxon?
复制标题
DOI：
10.1371/journal.pone.0139933
复制
发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Panchang R
中科院分区：
文献类型：
--
作者：
Kulkarni KG;Panchang R
新遗迹学观测有助于完善古遗迹学记录。本研究报告的分布，形态，发生和协会的多毛类沙蚕diversicolor在印度西海岸的昆达里卡河口的洞穴和粪球的广泛观察。我们对这些现代痕迹的整体研究表明，它是一种复杂的痕迹，源于多毛纲的domichelum、fodinichelum和可能的pascichelum行为。该研究首次报道了现代河口环境中广泛的粪粒生产，分布和厚堆保存。这些观测结果证实了球粒的石化潜力，并解释了它们在地质记录中的起源。它们的出现与土丘字符串不仅表明pascichlorium行为的多毛类，但也允许分配后古生代Tomaculum多毛类蠕虫的活动。如此大量的粪粒的产生在增加这些河口潮滩基质的平均粒度方面起着重要作用，从而改善了基质内的通气性。
Neoichnological observations help refine paleoichnological records. The present study reports extensive observations on the distribution, morphology, occurrence and association of burrows and fecal pellets of the polychaete Nereis diversicolor in the Kundalika Estuary on the west coast of India. Our holistic study of these modern-day traces suggests it to be a complex trace arising from domichnial, fodinichnial and possibly pascichnial behavior of polychaetes. The study for the first time reports extensive fecal pellet production, distribution and their preservation as thick stacks in modern estuarine environment. These observations testify the fossilization potential of pellets and provide an explanation to their origin in the geological record. Their occurrence as strings associated with mounds not only suggests pascichnial behaviour of polychaetes but also allows the assignment of post-Paleozoic Tomaculum to the activity of polychaete worms. The production of fecal pellets in such large quantities plays a major role in increasing the average grain size of the substrate of these estuarine tidal flats, thereby improving aeration within the substrate.