DOI: 10.1016/j.palaeo.2016.04.026
论文题名: Predation scar frequencies in chemosymbiotic bivalves at an Oligocene seep deposit and their potential relation to inferred sulfide tolerances
作者: Kiel S. ; Amano K. ; Jenkins R.G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 453 起始页码: 139
结束页码: 145
语种: 英语
英文关键词: Bivalves
; Cenozoic
; Chemosymbiosis
; Drilling predation
; Methane seepage
; Repair scars
; Sulfide
英文摘要: Three species of chemosymbiotic bivalves with different inferred sulfide tolerances and life habits from a lower Oligocene seep deposit in eastern Hokkaido, Japan, were investigated for drill holes and scars of durophagous predation. The thyasirid Conchocele bisecta had the lowest inferred sulfide tolerance and showed the highest frequencies of repair (0.4) and drilling predation (0.1), and specimens with drill holes were on average smaller than non-drilled specimens, indicating that large size is a refuge from drilling predation in this species. The bathymodiolin Bathymodiolus inouei and the vesicomyid Hubertschenckia ezoensis are inferred to have lived at higher sulfide concentrations than C. bisecta based on comparisons to their living relatives, and show lower repair frequencies (0.24 in B. inouei and 0.17 in H. ezoensis). Based on the assumption that increased sulfide concentrations are increasingly toxic to predators, we conclude that the frequency of shell injuries in the three investigated species is inversely related to the sulfide concentrations that these species are able to tolerate. Thus when applied carefully, the frequency of shell injuries among shelled invertebrates at fossil seeps may be used to infer their relative tolerances toward sulfide, and may thus represent a tool to assess the life habits of extinct invertebrates that inhabited methane seeps in the geologic past. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68409
Appears in Collections: 过去全球变化的重建
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作者单位: Swedish Museum of Natural History, Department of Palaeobiology, Box 500 07, Stockholm, Sweden; Joetsu University of Education, Department of Geoscience, Joetsu, Japan; Kanazawa University, School of Natural System, College of Science and Engineering, Kanazawa City, Ishikawa, Japan
Recommended Citation:
Kiel S.,Amano K.,Jenkins R.G.. Predation scar frequencies in chemosymbiotic bivalves at an Oligocene seep deposit and their potential relation to inferred sulfide tolerances[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,453