Plant-insect interactions across the Triassic–Jurassic boundary in the Sichuan Basin, South China

Frontiers in Ecology and Evolution, Год журнала: 2024, Номер 11

Опубликована: Янв. 9, 2024

Plants and insects are the most diverse ecologically important organisms in terrestrial biosphere. Their interactions also among richest biotic relationships, offer significant insights into evolution of ecosystem complexity through geological record. This investigation late Rhaetian Xujiahe earliest Jurassic Zhenzhuchong floral assemblages provides first data on foliar herbivory generated by arthropods across Triassic–Jurassic transition eastern Tethys (East Asia) region. The damage types from two fossil collectively attributed to seven functional feeding egg-laying categories (i.e., hole feeding, margin surface skeletonization, piercing sucking, oviposition, galling). Most strategies spread major plant groups persist boundary, with exception skeletonization (a category external foliage feeding), which was restricted latest Triassic within dipteridacean ferns. survey reveals that respective frequency diversity between plants prior following end-Triassic mass extinction event almost same, despite a substantial turnover components. suggest insect herbivores were largely able transfer alternative (but commonly related) during dramatic floristic environmental changes at end Triassic. Sporadic occurrences modifications, such as marginal cusps pinnules Pterophyllum prominent ridges rachises some ferns bennettites interpreted adaptations for defense against herbivores. A few differences taxonomic composition representation flora more likely be related collection preservational biases rather than reflecting palaeoecological changes. We encourage further investigations exploring distribution floras other palaeolatitudinal zones spanning events develop better understanding responses crises Earth’s history.

Язык: Английский

---

A New Species of Krameropteris (Dennstaedtiaceae) from Mid-Cretaceous Myanmar Amber

Taxonomy, Год журнала: 2025, Номер 5(1), С. 3 - 3

Опубликована: Янв. 4, 2025

Krameropteris is an extinct fern genus found in mid-Cretaceous Myanmar amber, assigned to the Dennstaedtiaceae, with only one previously described species, i.e., K. resinatus. This study describes a new calophyllum, also preserved amber. The species characterized by branched venation free veinlets terminating thickened tips, multicellular hairs along pinnule margins, and submarginal or medial exindusiate sori at ends of veinlets. Its sporangia are polypod-type, producing trilete spores. represents second record early-diverging Dennstaedtiaceae lineage calophyllum differs from resinatus its epidermal characteristics spore morphology, latter exhibiting conspicuously ornamented perine, covered sparse tubercles ridges. provides insights into potential herbivory interactions relationship between polypod ferns smallest mite ever recorded. These findings suggest that exhibited species-level diversity mid-Cretaceous, indicating earlier origin family, potentially as early Early Jurassic, consistent recent DNA-based time divergence estimates.

Язык: Английский

---

Epidermal anatomy of Pterophyllum ptilum (Cycadophyta: Bennettitales) from the Upper Triassic of Sichuan Province, Southwest China

Review of Palaeobotany and Palynology, Год журнала: 2025, Номер unknown, С. 105351 - 105351

Опубликована: Апрель 1, 2025

Язык: Английский

---

Fossil Xenoxylon (Coniferopsida) wood from the Upper Cretaceous of Heilongjiang, China: Evidence of a tripartite plant-arthropod-fungal association

Cretaceous Research, Год журнала: 2024, Номер 157, С. 105822 - 105822

Опубликована: Янв. 3, 2024

Язык: Английский

---

Leaf mining induced chemical defense of a Late Triassic ginkgophyte plant

New Phytologist, Год журнала: 2024, Номер unknown

Опубликована: Сен. 25, 2024

Язык: Английский

---

Microtomography of an enigmatic fossil egg clutch from the Oligocene John Day Formation, Oregon, USA, reveals an exquisitely preserved 29-million-year-old fossil grasshopper ootheca

Parks Stewardship Forum, Год журнала: 2024, Номер 40(1)

Опубликована: Янв. 12, 2024

Eggs are one of the least understood life stages insects, and poorly represented in fossil record. Using microtomography, we studied an enigmatic egg clutch a presumed entomological affinity from Oligocene Turtle Cove Member, John Day Formation, National Park Service-administered lands Fossil Beds Monument, Oregon. A highly organized mass comprising large size approximately 50 slightly curved ellipsoidal eggs arranged radially several planes is preserved, enclosed disc-shaped layer cemented compacted soil particles. Based on morphology overall structure eggs, conclude that specimen represents fossilized underground ootheca grasshoppers locusts (Orthoptera: Caelifera), also known as pod. This likely oldest first unambiguous evidence grasshopper We describe Subterroothecichnus radialis igen. et isp. nov. Curvellipsoentomoolithus laddi oogen. oosp. nov., representing pod respectively. advocate for adopting ootaxonomy studying affinities, widely practiced with amniotic eggs. An additional 26 individual clustered C. collected throughout A–H subunits Member suggest stable presence fauna, discuss paleoecological implications. Oothecae have convergently evolved times insect groups; this ovipositional strategy contributed to fossilization lesser-known ontogenetic stage, enriching our understanding past life.

Язык: Английский

---

New Odonatan oviposition ichnotaxa from the Lower Jurassic of Iran

Swiss Journal of Palaeontology, Год журнала: 2024, Номер 143(1)

Опубликована: Ноя. 24, 2024

Abstract Distinct, new oviposition lesion types, Paleoovoidus pyriformis ichnosp. nov. and Variomorphonotatus sagittaeformis ichnogen. et nov., occurring on two fossil compression Cycadophyte leaves from the Lower Jurassic Shemshak Formation of western Alborz Ranges, northern Iran are documented compared with previously instituted morphologically analogous taxa. Comparison shape configuration scars those modern zygopteran Odonata suggests that any member Lestid-damselfly produced P. whereas representative Coenagrionid-damselflies (damselflies-dragonflies) induced formation V. In absence, so far, entomofaunal evidence Formation, ichnotaxa herein offer unequivocal to presence Odonatan representatives in Early riparian ecosystems Iran.

Язык: Английский

---

Young Goji Fruit Volatiles Regulate the Oviposition Behavior and Chemosensory Gene Expression of Gravid Female Neoceratitis asiatica

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(24), С. 13249 - 13249

Опубликована: Дек. 10, 2024

The goji fruit fly, Neoceratitis asiatica, is a major pest on the well-known medicinal plant Lycium barbarum. Dissecting molecular mechanisms of oviposition selection N. asiatica regarding host will help to identify new strategies for fly control. However, mechanism chemical communication between and remains unclear. Hence, our study found that young volatiles induced response gravid female asiatica. After was exposed volatiles, expression six chemosensory genes (NasiOBP56h3 OBP99a1 in antennae; OBP99a2, OBP99a3 CSP2 legs; OBP56a ovipositor) significantly upregulated different organs compared with group without odor treatment according transcriptome data. Further results qPCR verification show levels selected after flies were mostly consistent We concluded may be involved recognition by Our preliminarily identifies as key factor behavior which facilitate further studies

Язык: Английский

---

Evolution: Unveiling a hidden tripartite relationship

Current Biology, Год журнала: 2022, Номер 32(23), С. R1311 - R1313

Опубликована: Дек. 1, 2022

Язык: Английский

---