Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica

IntroductionThe Sanzenbacher Ranch deposit represents an early Permian plant assemblage in north-central Texas predominantly composed of pteridosperms, of which callipterids are dominant. This study investigates the interactions of a taxonomically broad range of plant hosts with insects, mites, and...

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Main Authors: Thamiris Barbosa Dos Santos, Conrad C. Labandeira, Esther Regina de Souza Pinheiro, Roberto Iannuzzi
Format: Article
Language:English
Published: Frontiers Media S.A. 2024-03-01
Series:Frontiers in Ecology and Evolution
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fevo.2024.1368174/full
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author Thamiris Barbosa Dos Santos
Conrad C. Labandeira
Conrad C. Labandeira
Conrad C. Labandeira
Esther Regina de Souza Pinheiro
Roberto Iannuzzi
author_facet Thamiris Barbosa Dos Santos
Conrad C. Labandeira
Conrad C. Labandeira
Conrad C. Labandeira
Esther Regina de Souza Pinheiro
Roberto Iannuzzi
author_sort Thamiris Barbosa Dos Santos
collection DOAJ
description IntroductionThe Sanzenbacher Ranch deposit represents an early Permian plant assemblage in north-central Texas predominantly composed of pteridosperms, of which callipterids are dominant. This study investigates the interactions of a taxonomically broad range of plant hosts with insects, mites, and pathogens to assess the richness and frequency of damage.MethodsWe used standard methods of the functional feeding group--damage type system and analyses graphically illustrated as nonmetric multidimensional scaling.ResultsOf the total surface area represented, we quantified the fraction of the area herbivorized, providing a comparative perspective with regard to several similar studies of herbivory at nearby plant assemblages from the late Paleozoic. To assess insect herbivory, 1,361 plant specimens were analyzed, including fronds, leaves, reproductive structures, axes, and wood impressions. A total of 205 specimens presented one or more instances of insect herbivory (11.17%). Callipterid-peltasperms exhibited the highest number of interactions, with Autunia conferta, Rhachiphyllum schenkii, cf. Lodevia sp., cf. Comia sp., and an unidentified callipterid accounting for 49.34% of all interactions. Medullosans represented 10.53%, followed by lyginopterids with 8.55%. Forty-eight damage types (DTs) were recognized and classified into the nine functional feeding groups of hole feeding, margin feeding, surface feeding, piercing and sucking, oviposition, galling, seed predation, borings, and pathogens.DiscussionWhen compared to analogous late Paleozoic plant assemblages in Texas, Sanzenbacher Ranch exhibited almost all herbivore functional feeding groups, high richness of DTs, and low herbivory index of 0.26. This record shows high plant diversity in a seasonally dry environment that supports a trend of an early Permian increase in DT diversity in southwestern Euramerica. Sanzenbacher Ranch, different from other early Permian plant assemblages, sheds light on the dynamic ecological interactions of these ancient ecosystems.
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spelling doaj.art-cc3fc2fa9da64f15911a19d4181b6f362024-03-12T04:57:42ZengFrontiers Media S.A.Frontiers in Ecology and Evolution2296-701X2024-03-011210.3389/fevo.2024.13681741368174Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern EuramericaThamiris Barbosa Dos Santos0Conrad C. Labandeira1Conrad C. Labandeira2Conrad C. Labandeira3Esther Regina de Souza Pinheiro4Roberto Iannuzzi5Programa de Pós-Graduação em Geociências, Departamento de Paleontologia e Estratigrafia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, BrazilDepartment of Paleobiology, Smithsonian Institution, National Museum of Natural History, Washington, DC, United StatesDepartment of Entomology, University of Maryland, College Park, College Park, MD, United StatesCapital Normal University, College of Life Science and Academy for Multidisciplinary Studies, Beijing, ChinaDepartamento de Ciências Agrárias e da Terra, Universidade do Estado de Minas Gerais, Passos, Minhas Gerais, BrazilPrograma de Pós-Graduação em Geociências, Departamento de Paleontologia e Estratigrafia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, BrazilIntroductionThe Sanzenbacher Ranch deposit represents an early Permian plant assemblage in north-central Texas predominantly composed of pteridosperms, of which callipterids are dominant. This study investigates the interactions of a taxonomically broad range of plant hosts with insects, mites, and pathogens to assess the richness and frequency of damage.MethodsWe used standard methods of the functional feeding group--damage type system and analyses graphically illustrated as nonmetric multidimensional scaling.ResultsOf the total surface area represented, we quantified the fraction of the area herbivorized, providing a comparative perspective with regard to several similar studies of herbivory at nearby plant assemblages from the late Paleozoic. To assess insect herbivory, 1,361 plant specimens were analyzed, including fronds, leaves, reproductive structures, axes, and wood impressions. A total of 205 specimens presented one or more instances of insect herbivory (11.17%). Callipterid-peltasperms exhibited the highest number of interactions, with Autunia conferta, Rhachiphyllum schenkii, cf. Lodevia sp., cf. Comia sp., and an unidentified callipterid accounting for 49.34% of all interactions. Medullosans represented 10.53%, followed by lyginopterids with 8.55%. Forty-eight damage types (DTs) were recognized and classified into the nine functional feeding groups of hole feeding, margin feeding, surface feeding, piercing and sucking, oviposition, galling, seed predation, borings, and pathogens.DiscussionWhen compared to analogous late Paleozoic plant assemblages in Texas, Sanzenbacher Ranch exhibited almost all herbivore functional feeding groups, high richness of DTs, and low herbivory index of 0.26. This record shows high plant diversity in a seasonally dry environment that supports a trend of an early Permian increase in DT diversity in southwestern Euramerica. Sanzenbacher Ranch, different from other early Permian plant assemblages, sheds light on the dynamic ecological interactions of these ancient ecosystems.https://www.frontiersin.org/articles/10.3389/fevo.2024.1368174/fullAutuniadamage typesfunctional feeding groupsherbivorypeltaspermsseed plants
spellingShingle Thamiris Barbosa Dos Santos
Conrad C. Labandeira
Conrad C. Labandeira
Conrad C. Labandeira
Esther Regina de Souza Pinheiro
Roberto Iannuzzi
Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica
Frontiers in Ecology and Evolution
Autunia
damage types
functional feeding groups
herbivory
peltasperms
seed plants
title Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica
title_full Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica
title_fullStr Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica
title_full_unstemmed Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica
title_short Plant interactions with arthropods and pathogens at Sanzenbacher Ranch, early Permian of Texas, and implications for herbivory evolution in Southwestern Euramerica
title_sort plant interactions with arthropods and pathogens at sanzenbacher ranch early permian of texas and implications for herbivory evolution in southwestern euramerica
topic Autunia
damage types
functional feeding groups
herbivory
peltasperms
seed plants
url https://www.frontiersin.org/articles/10.3389/fevo.2024.1368174/full
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