阿尔及利亚西北部下谢里夫盆地 Sidi Brahim 的上新世沉积物首次记录到牡蛎 Hyotissa hyotis (Linné, 1758) 的水泡珍珠

IF 0.9 Q3 GEOLOGY
Rachid Khalili, O. Vinn
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引用次数: 0

摘要

摘要 珍珠化石非常罕见,但却是证明寄生虫曾经存在的重要古生态学指标。来自 Sidi Brahim 上新世的一只 Hyotissa hyotis 右瓣膜显示,内收肌印痕内有许多水泡珍珠。在同一地点,还采集到许多内收肌疤痕光滑、没有任何水泡的贝壳。所研究的瓣膜中的结构与奥地利其他新生代珍珠相似,因此可以很有把握地将其归类为水泡珍珠。水泡珍珠的形成可能是寄生虫侵袭的反应。一些寄生虫可能特别针对牡蛎属 Hyotissa 的内收肌相关区域,因为奥地利中新世的同属物种 H. squarrosa 也曾出现过类似的水泡珍珠。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
First record of blister pearls in the oyster Hyotissa hyotis (Linné, 1758) from Pliocene deposits at Sidi Brahim, Lower Chelif Basin (north-west Algeria)
Abstract Fossil pearls are rare but important palaeoecological indicators in proving the former presence of parasites. A single right valve of Hyotissa hyotis from the Pliocene of Sidi Brahim shows numerous blister pearls inside the adductor muscle imprint. At the same locality, numerous shells with smooth adductor scars and without any blisters, have been collected. The structures in the studied valve can be assigned to blister pearls with high confidence due to their similarity to other Cenozoic pearls from Austria. The blister pearls likely formed as a reaction to parasite infestation. It is possible that some parasites especially targeted areas associated with the adductor muscles in the oyster genus Hyotissa, because similar blister pearls have previously been described in a congeneric species, H. squarrosa, from the Miocene of Austria.
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来源期刊
Geologos
Geologos GEOLOGY-
CiteScore
1.70
自引率
0.00%
发文量
7
审稿时长
12 weeks
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