DOI: 10.1016/j.palaeo.2015.04.007
论文题名: The effect of hunger on drilling behaviour of Natica tigrina: An experimental assessment
作者: Das S. ; Chattopadhyay D. ; Chattopadhyay D.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 429 起始页码: 57
结束页码: 61
语种: 英语
英文关键词: Bivalve
; Cost-benefit analysis
; Drilling frequency
; Drilling predation
; Gastropod
; Size selectivity
英文摘要: Drilling predation is one of the unique scenarios where past biotic interactions can be studied quantitatively and used to model behavioural evolution of the involved groups. Although it is recognized that hunger plays an important role in determining the behaviour of terrestrial predatory groups, its specific effect on drilling gastropods is largely unexplored. Muricids have been shown to demonstrate change in prey preference and foraging behaviour when starved. Such behaviour is yet to be tested for naticid gastropods.In an experiment with live naticid gastropods, Natica tigrina and their bivalve prey Cardium sp., we evaluated the effect of hunger on the following aspects of predation: 1. Drilling frequency, 2. Size selectivity, and 3. Site selectivity. Comparing gastropods between satiated controlled group and starved experimental group we demonstrated a positive effect of hunger on drilling frequency. Using different stages of hunger, we found that hunger plays an important role in dictating prey size-selectivity. While hunger increases drilling frequency, it reduces the degree of prey size selectivity. Hunger is not found to initiate edge-drilling or incomplete drilling in N. tigrina.It has been postulated that prey selection by gastropods are correctly modelled by cost-benefit analysis; but the standard cost-benefit analysis does not account for hunger. However, our study demonstrates the relative importance of hunger in guiding drilling behaviour in naticids and hence it should be incorporated in future cost-benefit models. As hunger is often related to nutrient depleted conditions, these modifications in behaviour could be used to explain the spatial variation in drilling pattern by naticid gastropods. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68931
Appears in Collections: 过去全球变化的重建
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作者单位: Indian Institute of Science Education and Research (IISER) Kolkata, Department of Earth Sciences, Mohanpur, India
Recommended Citation:
Das S.,Chattopadhyay D.,Chattopadhyay D.. The effect of hunger on drilling behaviour of Natica tigrina: An experimental assessment[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,429