厄瓜多尔圣埃琳娜半岛晚更新世/全新世早期Tablazo组pampathere Holmesina occidental的骨皮技术

IF 1.7 4区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY
John-Paul Zonneveld
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引用次数: 0

摘要

据报道,来自厄瓜多尔圣埃琳娜半岛晚更新世珊瑚动物群的大型环带鱼是寄生虫诱导和食腐动物产生生物侵蚀的第一个证据。这些痕迹出现在大草原的骨皮外表面。观察到的痕迹包括浅到深的非晶蚀刻,浅卵形到半球形的各种大小的凹坑(Karethraichnus lakkos),深圆柱形凹坑(K. kulindros),浅的水平的,轻微弯曲的凹槽,直的,水平的,光滑的壁,u形到圆形的v形凹槽(Linichnus bromleyi)和三角形到次圆形的刺痕(Nihilichnus nihilicus)。卵圆形到半球形的浅坑和深坑都是寄生节肢动物造成的,最有可能是囊蚤和蜱。浅层和深层的无定形蚀刻可能记录了双翅类分泌物和细菌感染的腐蚀。弯曲的凹槽可能记录了皮虫幼虫的活动。直槽被解释为记录各种牙齿和爪子刮痕。无脊椎动物身上的痕迹被解释为记录了寄生虫的活动,而划痕可能是死后留下的,可能是食腐动物而不是捕食者留下的。总的来说,西珊瑚身上的寄生虫负荷似乎很轻,有证据表明,在它们死后,只有少量的尸体被清除。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ichnology of osteoderms of the pampathere Holmesina occidentalis from the Late Pleistocene / Early Holocene Tablazo Formation, Santa Elena Peninsula, Ecuador
The first evidence of parasite-induced and scavenger-produced bioerosion is reported from large cingulates from the Late Pleistocene Coralito fauna on the Santa Elena Peninsula of Ecuador. These traces occur on the external surface of osteoderms from the large pampathere Holmesina occidentalis. Traces observed include shallow to deep amorphous etchings, shallow ovoid to hemispherical pits of various sizes (Karethraichnus lakkos) deep, cylindrical pits (K. kulindros), shallow, horizontal, gently sinuous, grooves, straight, horizontal, smooth-walled, u-shaped to rounded v-shaped grooves (Linichnus bromleyi) and triangular to subrounded puncture-marks (Nihilichnus nihilicus). Both shallow and deep ovoid to hemispherical pits are attributable to parasitic arthropods, most likely tungid fleas and ticks. The shallow and deep amorphous etchings likely record corrosion by dipteran secretions and bacterial infections. The meandering grooves may record the activity of dermestid beetle larvae. The straight grooves are interpreted to record a variety of tooth and claw scrape marks. Traces attributed in invertebrates are interpreted to record the activity of parasites, whereas the scratchmarks may have been emplaced postmortem, likely by scavengers rather than predators. Overall, parasite loads on Coralito H. occidentalis appear to have been light, with evidence of only minor scavenging of their carcasses after their death.
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来源期刊
Journal of South American Earth Sciences
Journal of South American Earth Sciences 地学-地球科学综合
CiteScore
3.70
自引率
22.20%
发文量
364
审稿时长
6-12 weeks
期刊介绍: Papers must have a regional appeal and should present work of more than local significance. Research papers dealing with the regional geology of South American cratons and mobile belts, within the following research fields: -Economic geology, metallogenesis and hydrocarbon genesis and reservoirs. -Geophysics, geochemistry, volcanology, igneous and metamorphic petrology. -Tectonics, neo- and seismotectonics and geodynamic modeling. -Geomorphology, geological hazards, environmental geology, climate change in America and Antarctica, and soil research. -Stratigraphy, sedimentology, structure and basin evolution. -Paleontology, paleoecology, paleoclimatology and Quaternary geology. New developments in already established regional projects and new initiatives dealing with the geology of the continent will be summarized and presented on a regular basis. Short notes, discussions, book reviews and conference and workshop reports will also be included when relevant.
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