Record of intense predatory drilling from Upper Jurassic bivalves of Kutch, India: Implications for the history of biotic interaction

Bardhan, Subhendu; Chattopadhyay, Devapriya; Mondal, Subhronil; Das, Sayantani; Mallick, Sumanta; Roy, Arindam; Chanda, Piyali

doi:10.1016/j.palaeo.2012.01.007

Cited by 34 publications

(21 citation statements)

References 51 publications

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“…On a similar note it is worth considering that some predation marks (such as drill hole, repair scar) could perhaps substantially alter the hydrodynamic behavior of a shell as noted by many studies (Lever and Thijssen, 1968;Trewin and Welsh, 1972;Chattopadhyay et al, 2006). Since predation studies in deep time rely heavily on the assumption of the unbiased nature of the assemblage (Kelley and Hansen, 2003, and references therein;Chattopadhyay, 2011;Bardhan et al, 2012;Chattopadhyay and Dutta, 2013), this should be investigated further.…”

Section: Effect Of Transportation On Assemblagementioning

confidence: 98%

“…Many paleontological studies based on bivalved mollusks utilize assemblage-level data (Chattopadhyay, 2011(Chattopadhyay, , 2013Bardhan et al, 2012). The tacit assumption for using such data is that the information available from the preserved assemblage has not been significantly altered by postmortem processes (Kidwell and Bosence, 1991;Kelley and Hansen, 2003).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Morphology on Postmortem Transportation of Bivalves and Its Taphonomic Implications

Chattopadhyay¹,

Rathie²,

Das³

2013

PALAIOS

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Fossilized shell assemblages are often the result of postmortem transportation. It is therefore crucial to identify biases introduced due to differences in the hydrodynamic properties of shells to ensure the validity of ecological interpretations. In a flow tank study with the bivalve Donax scortum Linnaeus, 1758, we found that shell size, shape, and ornamentation played an important role in dictating the hydrodynamic properties of shells. This study demonstrates that threshold current velocity for the entrainment of a convex-up shell is generally determined by its size, a result corroborating previous findings. We found that a smaller shell is mobilized with a lower velocity compared to a larger one. Additionally, we found ornamentation of a shell also played a significant role in transportation. Unlike previous studies, we have demonstrated that altered smooth shells require a higher velocity for transportation compared to fresh shells with pronounced ornamentation. The movement trajectory of a shell depends on its asymmetry. The right and left valves of a single individual are deflected in distinctly different directions. This study shows that the extent of such deflection is dependent on the size of the valve and the velocity of the flow. Using a simulation based on our experimental data, we have also demonstrated the effect that transportation bias can have in modifying a shell assemblage. The results of this study underscore the concept that the final distribution of shells following a transportation event may yield a bivalve population significantly different from the original one.

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Section: Effect Of Transportation On Assemblagementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

The Effect of Morphology on Postmortem Transportation of Bivalves and Its Taphonomic Implications

Chattopadhyay¹,

Rathie²,

Das³

2013

PALAIOS

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“…Fossil evidence, however, shows that drilling gastropods evolved to select a specific site on the prey shell even before the Cretaceous (Kabat and Kohn 1986). Stereotypic behavior is most commonly reported from the Cenozoic (Kitchell et al 1981;Kelley 1988; and references therein), but has also been documented from the Paleozoic (Leighton 2001;Deline et al 2003) and Mesozoic (Harper 2003;Chattopadhyay 2011; Bardhan et al 2012b). It has often been argued that this site selectivity is guided by the cost-benefit ratio of an attack (Kitchell et al 1981;Chattopadhyay and Baumiller 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of a high-risk environment on edge-drilling behavior: inference from Recent bivalves from the Red Sea

Chattopadhyay¹,

Zuschin²,

Tomášových³

2014

Paleobiology

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Edge-drilling is an unusual predation pattern in which a predatory gastropod drills a hole on the commissure between the valves of a bivalve. Although it is faster than wall drilling, it involves the potential risk of amputating the drilling organ. We therefore hypothesize that this risky strategy is advantageous only in environments where predators face high competition or predation pressure while feeding. The high frequency of edge-drilling (EDF, relative to the total number of drilled valves) in a diverse Recent bivalve assemblage from the Red Sea enables us to test this hypothesis, predicting (1) a low EDF in infaunal groups, (2) a high EDF in bivalves with elongated shape, (3) high incidence of edge-drilling in groups showing a high wall-drilling frequency, and (4) high EDF in shallow habitats. We evaluate these predictions based on >15,000 bivalve specimens. Among ecological attributes, we found substrate affinity and predation intensity of a species to be good predictors of edge-drilling incidence. Infaunal taxa with high length/width ratio have a low EDF, in accordance with our predictions. Predation intensity is also a significant predictor of edge-drilling; groups with high predation intensity show higher incidence of edge-drilling, confirming our prediction. Although water depth fails to show any significant effect on EDF, this analysis generally supports the high-risk hypothesis of edge-drilling incidence because shallow depths have considerable microhabitat variability. Classically the drill hole site selection has often been linked to predatory behavior. Our study indicates that prey attributes are also crucial in dictating the behavioral traits of a driller such as site selection. This calls for considering such details of the prey to fully understand predation in modern and fossil habitats. Moreover, this perspective is important for tackling the longstanding riddle of the limited temporal and spatial distribution of edge-drilling.

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“…Present fossil collection has been made from a pond section near Jhura (*). Modified after Bardhan et al (2012). …”

Section: Geologic Settingmentioning

confidence: 99%

The oldest turritelline gastropods: from the Oxfordian (Upper Jurassic) of Kutch, India

Das¹,

Saha²,

Bardhan³

et al. 2018

J. Paleontol.

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Turritellid gastropods are important components of many Cretaceous–Recent fossil marine faunas worldwide. Their shell is morphologically simple, making homoplasy widespread and phylogenetic analysis difficult, but fossil and living species can be recognized based on shell characters. For many decades, it has been the consensus that the oldest definite representatives of Turritellidae are from the Lower Cretaceous, and that pre-Cretaceous forms are homeomorphs. Some morphological characters of the present turritelline species resemble those of mathildoids, but many diagnostic characters clearly separate these two groups. We here describe and/or redescribe—based on examination of more than 2600 near complete specimens—four species from the Upper Jurassic Dhosa Oolite Member of the Chari Formation in Kutch, western India, and demonstrate that they are members of Turritellidae, subfamily Turritellinae, on the basis of diagnostic characters including apical sculptural ontogeny (obtained from SEM study), spiral sculpture, and growth line patterns. The four species are in order of abundance, Turritella jadavpuriensis Mitra and Ghosh, 1979; Turritella amitava new species; Turritella jhuraensis Mitra and Ghosh, 1979, and Turritella dhosaensis new species. The turritelline assemblages occur only on the northeastern flank of the Jhura dome (23°24’47.57”N, 69°36’09.26”E). Age of the Dhosa Oolite has recently been confirmed based on multiple ammonite species. All these points indicate that these fossils are the oldest record of the family Turritellidae—by almost 30 million years—in the world.

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Record of intense predatory drilling from Upper Jurassic bivalves of Kutch, India: Implications for the history of biotic interaction

Cited by 34 publications

References 51 publications

The Effect of Morphology on Postmortem Transportation of Bivalves and Its Taphonomic Implications

The Effect of Morphology on Postmortem Transportation of Bivalves and Its Taphonomic Implications

Effects of a high-risk environment on edge-drilling behavior: inference from Recent bivalves from the Red Sea

The oldest turritelline gastropods: from the Oxfordian (Upper Jurassic) of Kutch, India

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