NEOICHNOLOGY OF AMPHIBIOUS ARTHROPODS: EFFECTS OF SUBAQUEOUS AND SUBAERIAL SUBSTRATE CONDITIONS ON TRACE MORPHOLOGY

IF 1.5 4区 地球科学 Q2 GEOLOGY Palaios Pub Date : 2022-10-20 DOI:10.2110/palo.2021.062
L. Devine, N. Minter
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Abstract

Abstract: Neoichnology, the study of the traces of extant organisms, provides a vital tool for better understanding trace fossils. We conducted neoichnological experiments to test hypotheses regarding producers and the effects of substrate conditions on trace fossils produced by aquatic to amphibious arthropods. Our experiments comprised two protocols: subaerial and subaqueous substrates; and we utilized five arthropods: fully aquatic ostracods (Ostracoda indet.), to amphibious horseshoe crabs (Limulus polyphemus), shore crabs (Carcinus maenas), and scarlet hermit crabs (Paguristes cadenati), and the largely terrestrial sea slaters (Ligia oceanica). The different arthropods were observed performing locomotory, resting/stationary, and feeding behaviors, which all resulted in different traces influenced by the substrate conditions and their preference for living in and out of water. In general, trace depth increased with arthropod mass and, for each individual arthropod except the scarlet hermit crab, trace depth was also greater in subaerial compared to subaqueous substrates. In the majority of cases, comparisons with selected trace fossils supported previous hypotheses as to their producers. The traces of horseshoe crabs, shore crabs, sea slaters, and ostracods resembled the ichnotaxa Kouphichnium, Laterigradus, Pterichnus, and Mermia, respectively. Other experimental work has shown hermit crabs produce traces similar to Coenobichnus and our results further increase the range of trace morphologies that can be attributed to hermit crabs. The results of this research have bearing on debates in ichnology where the interpretation of producers and substrate conditions at the time of trace formation are critical, such as the trace fossil evidence for the colonization of land.
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两栖节肢动物新遗迹学:水下和陆上基质条件对痕迹形态的影响
摘要:研究现存生物痕迹的新技术为更好地理解痕迹化石提供了重要工具。我们进行了新技术实验,以测试关于生产者和基质条件对水生到两栖节肢动物产生的痕迹化石的影响的假设。我们的实验包括两种方案:陆上和水下基质;我们利用了五种节肢动物:完全水生的介形虫(Ostracoda indet.)、两栖的马蹄蟹(Limulus polyphemus)、岸蟹(Carcinus maenas)、猩红寄居蟹(Paguristes cadenati)和主要是陆生的海石蟹(Ligia oceanica)。不同节肢动物的运动、休息/静止和摄食行为都受到基质条件和它们对水内外生活的偏好的影响,导致了不同的痕迹。一般来说,痕迹深度随节肢动物质量的增加而增加,除红色寄居蟹外,每种节肢动物在陆地上的痕迹深度也大于水下基质。在大多数情况下,与选定的痕迹化石的比较支持先前关于它们的生产者的假设。马蹄蟹、岸蟹、海板蟹和介形虫的足迹分别与鱼类群Kouphichnium、Laterigradus、Pterichnus和Mermia相似。其他实验工作表明寄居蟹产生类似于Coenobichnus的痕迹,我们的结果进一步增加了寄居蟹可归因于痕迹形态的范围。这项研究的结果对技术上的争论有影响,在这些争论中,对微量形成时的生产者和基质条件的解释是至关重要的,例如陆地殖民的微量化石证据。
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来源期刊
Palaios
Palaios 地学-地质学
CiteScore
2.80
自引率
12.50%
发文量
40
审稿时长
6 months
期刊介绍: PALAIOS is a monthly journal, founded in 1986, dedicated to emphasizing the impact of life on Earth''s history as recorded in the paleontological and sedimentological records. PALAIOS disseminates information to an international spectrum of geologists and biologists interested in a broad range of topics, including, but not limited to, biogeochemistry, ichnology, paleoclimatology, paleoecology, paleoceanography, sedimentology, stratigraphy, geomicrobiology, paleobiogeochemistry, and astrobiology. PALAIOS publishes original papers that emphasize using paleontology to answer important geological and biological questions that further our understanding of Earth history. Accordingly, manuscripts whose subject matter and conclusions have broader geologic implications are much more likely to be selected for publication. Given that the purpose of PALAIOS is to generate enthusiasm for paleontology among a broad spectrum of readers, the editors request the following: titles that generate immediate interest; abstracts that emphasize important conclusions; illustrations of professional caliber used in place of words; and lively, yet scholarly, text.
期刊最新文献
NEW QUANTITATIVE DESCRIPTORS (SHAPE AND MACROBORING) OF BIOGENIC NODULES: EXAMPLES FROM THE LESSER ANTILLES AND NEW ZEALAND LOCOMOTION TRACES EMPLACED BY MODERN STALKLESS COMATULID CRINOIDS (FEATHERSTARS) A FOSSIL FOREST FROM ITALY REVEALS THAT WETLAND CONIFERS THRIVED IN EARLY PERMIAN PERI-TETHYAN PANGEA TAPHONOMY OF TINY TETRAPOD TRACKS IN AN EXAMPLE FROM THE LOWER PERMIAN (CISURALIAN) SŁUPIEC FORMATION (SW POLAND) PLANT COMMUNITY CHANGE ACROSS THE PALEOCENE–EOCENE BOUNDARY IN THE GULF COASTAL PLAIN, CENTRAL TEXAS
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