Unveiling the Permian and Triassic record of drilling predation on ostracods

Forel, Marie‐Béatrice; Bergue, Cristianini Trescastro; Maranhão, Maria da Saudade Araújo Santos

doi:10.1016/j.marmicro.2022.102113

Cited by 4 publications

(1 citation statement)

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“…In contrast to the studies on Cenozoic and Recent drill holes, quantitative analyses with drill holes to infer behavioral pattern of the drill-hole producers (e.g., site selectivity, size selectivity, prey selectivity) from the early Mesozoic (Early Triassic–Middle Jurassic) are scarce. There is only one quantitative study from the Triassic (Forel et al 2022) and two quantitative studies of drill holes from the Lower Jurassic analyzing behavioral patterns of drill-hole producers. Harper et al (1998) mentioned predatory drill holes on several taxa from different localities and showed that the drill holes on astartid bivalve shells from the lower Pliensbachian ( Tragophylloceras ibex Zone) of the United Kingdom were nonrandomly distributed, indicating a site-selective behavior.…”

Section: Introductionmentioning

confidence: 99%

Drilling predation on Early Jurassic bivalves and behavioral patterns of the presumed gastropod predator—evidence from Pliensbachian soft-bottom deposits of northern Germany

Karapunar¹,

Werner²,

Simonsen³

et al. 2023

Paleobiology

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Drilling predation is a common reason for mortality of benthic mollusks but did not become common until the late Mesozoic. The scarcity of drill holes in the early Mesozoic fossil record limits our understanding of the evolution of drilling behavior and its role on shaping early Mesozoic marine communities. Here, we use drilling traces on several bivalve taxa from the Lower Jurassic (Pliensbachian) marine soft-bottom deposits in northern Germany to explore behavioral patterns of the predator (e.g., site selectivity, change in site-selective behavior with age). Although none of the known drilling gastropod groups existed in the Pliensbachian, including the studied localities, the drill-hole morphology suggests that the predator was probably a gastropod. The ecology and identity of the target prey changes from a diverse array of epifaunal to infaunal taxa in older deposits to focus on a single, large, deep infaunal taxon, Gresslya intermedia, in younger deposits, suggesting a potential trend in prey selectivity over time. Spatial point pattern analysis of traces (SPPAT) reveals an aggregated pattern of drill holes on Gresslya, suggesting strong selectivity in drill-hole location. Drilling on a single large infaunal taxon and site selectivity are common patterns also inferred previously from the drilled deep infaunal Eothyasira from the Pliensbachian of southern Germany. In addition to the scarcity of predators, the highly specialized behavior of the early drilling predators, including strong prey selectivity in terms of prey identity and life habit, can partly explain the rarity of the early Mesozoic drill holes.

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Section: Introductionmentioning

confidence: 99%