Galls of Cecidoses eremita Curtis and Eucecidoses minutanus Brèthes (Lepidoptera: Cecidosidae) in Magdalena, Buenos Aires Province: preliminary study and associated fauna

Loetti, Verónica; Valverde, Alejandra del C.; Rubel, Diana

doi:10.1590/1676-0611-bn-2016-0161

Cited by 2 publications

(5 citation statements)

References 21 publications

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“…Prior to the beginning of this study, E . minutanus was known to exist in four populations ( Fig 2A ) located within the Buenos Aires (type locality) and Mendoza provinces, Argentina [ 22 – 24 ], and in Paraná state, Brazil [ 25 ]. These records came from either reared adults or collected galls associated with Schinus polygamous (Cavanilles) Cabrera (Anacardiaceae) sensu lato , as discussed below.…”

Section: Methodsmentioning

confidence: 99%

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Phylogeography of the gall-inducing micromoth Eucecidoses minutanus Brèthes (Cecidosidae) reveals lineage diversification associated with the Neotropical Peripampasic Orogenic Arc

et al. 2018

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We investigated the molecular phylogenetic divergence and historical biogeography of the gall-inducing micromoth Eucecidoses minutanus Brèthes (Cecidosidae) in the Neotropical region, which inhabits a wide range and has a particular life history associated with Schinus L. (Anacardiaceae). We characterize patterns of genetic variation based on 2.7 kb of mitochondrial DNA sequences in populations from the Parana Forest, Araucaria Forest, Pampean, Chacoan and Monte provinces. We found that the distribution pattern coincides with the Peripampasic orogenic arc, with most populations occurring in the mountainous areas located east of the Andes and on the Atlantic coast. The phylogeny revealed a marked geographically structured differentiation, which highlights a first split into two major clades: western (Monte and Chacoan) and eastern (Pampean and coastal forests). Together with AMOVA and network analysis, phylogeny revealed the existence of six well-defined lineages, which are isolated by distance. The TMRCA for Eucecidoses was estimated at ca. 65 Mya, and the divergence among major clades occurred by the Plio-Pleistocene ca. 20–25 Mya, with the extant six lineages emerging about 0.9 to 5.7 Mya (later than the rise of Schinus). These results are associated with a diversification pattern of either a late burst of speciation or early extinction. Population range expansion for some lineages concurring with major climatic changes that occurred during the wet–dry events of the Pleistocene in the region was recovered in both neutrality tests and past dynamics through time analysis. A possible biogeographic scenario reconstructed suggests that Eucecidoses likely emerged from a central meta-population in the south and later dispersed (ca. 38 Mya) using western and eastern as two major routes. Thus, a combination of dispersal and vicariance events that occurred in the ancestral populations might have shaped the current distribution of extant lineages. Speciation driven by host plant shift is potentially involved in the evolutionary history of Eucecidoses.

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Section: Methodsmentioning

confidence: 99%

“…eremita are larger and have a thicker wall; they have double the diameter and thickness of those of E . minutanus ([ 22 ]; for precise dimensions, see Loetti et al, [ 24 ]). The operculum in C .…”

Section: Methodsmentioning

confidence: 99%

Phylogeography of the gall-inducing micromoth Eucecidoses minutanus Brèthes (Cecidosidae) reveals lineage diversification associated with the Neotropical Peripampasic Orogenic Arc

et al. 2018

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“…of Argentina, Uruguay, and Brazil (Brèthes, 1916; Loetti et al, 2016; Silva et al, 2018b). These conspicuous, globoid, external, and operculate cecidosid galls have long drawn the attention of scientists toward their biology (e.g., Curtis, 1835; Kieffer and Jörgensen, 1910; Brèthes, 1916; Wille, 1926; Houard, 1933; Loetti et al, 2016; Silva et al, 2018b). The galls of C. eremita were anatomically studied in detail by Wille (1926), while the galls of E. minutanus have been poorly understood from a histological perspective, except for anecdotal information provided in the original description (Brèthes, 1916).…”

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confidence: 99%

“…Cecidosidae adults are usually short lived (Silva et al, 2018b), but the length of the stages of egg, four instars of larvae, and pupae are not known. Further studies on the natural history of E. minutanus are needed to understand the features of its life cycle (Loetti et al, 2016).…”

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confidence: 99%

“…Two phylogenetically sister species— Cecidoses eremita Curtis and Eucecidoses minutanus Brèthes (Lepidoptera, Cecidosidae) (Silva et al, 2018b)—induce globoid stem galls with similar shape, but different sizes, side by side in the same branches on distinct Schinus spp. of Argentina, Uruguay, and Brazil (Brèthes, 1916; Loetti et al, 2016; Silva et al, 2018b). These conspicuous, globoid, external, and operculate cecidosid galls have long drawn the attention of scientists toward their biology (e.g., Curtis, 1835; Kieffer and Jörgensen, 1910; Brèthes, 1916; Wille, 1926; Houard, 1933; Loetti et al, 2016; Silva et al, 2018b).…”

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Complex meristematic activity induced by Eucecidoses minutanus on Schinus engleri turns shoots into galls

Ferreira

Moreira

Carneiro

et al. 2022

American J of Botany

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Premise Gall‐inducing organisms change the development of their host plant organs, resulting in ontogenetic patterns not observed in the non‐galled plants. Distinct taxa induce galls on Schinus spp., manipulating meristematic patterns in the host plant in distinct ways. Here we report ontogenetic novelties induced in the lateral buds of S. engleri by Eucecidoses minutanus, a Cecidosidae, whose galls have been poorly understood. Methods The anatomy, histochemistry, and histometry of galls in distinct phases of development, non‐galled buds, and stems of Schinus engleri were analyzed in parallel with the instars of E. minutanus to detail the morphogenetic changes in the host with each larval stage. Results Ontogenetic phases of the galls were intricately associated with larval development. First and second‐instar larvae induced pericycle and pith cells to dedifferentiate into the gall inner meristem, where hyperplasia and cell hypertrophy characterized the growth and development phase of the gall. The innermost layers were lipid‐rich nutritive cells that lined the larval chamber. Additional vascular bundle rows were produced in young galls. Third and fourth instar‐larvae were associated with the gall maturation phase: centripetal lignification of the outer parenchyma cell layers, epidermal stratification, and activation of a cambium‐like meristem (CLM). The CLM activity resulted in new layers of nutritive cells that differentiated inward as the first layers of nutritive cells were consumed by E. minutanus larvae, and, also, in more parenchyma cell layers that formed outward. All tissues between the innermost layer of nutritive tissue that surround the gall chamber and the outermost layer of the dermal system that externally covers the gall form the gall wall, and increased in thickness until the end of gall maturation. Conclusions E. minutanus induces a structurally complex globoid stem gall, modifying all host plant tissues and stimulating a novel meristematic pattern in S. engleri. The gall developmental stages are each related to specific gall‐inducing instars, as gall development progresses according to the development of E. minutanus.

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Galls of Cecidoses eremita Curtis and Eucecidoses minutanus Brèthes (Lepidoptera: Cecidosidae) in Magdalena, Buenos Aires Province: preliminary study and associated fauna

Cited by 2 publications

References 21 publications

Phylogeography of the gall-inducing micromoth Eucecidoses minutanus Brèthes (Cecidosidae) reveals lineage diversification associated with the Neotropical Peripampasic Orogenic Arc

Phylogeography of the gall-inducing micromoth Eucecidoses minutanus Brèthes (Cecidosidae) reveals lineage diversification associated with the Neotropical Peripampasic Orogenic Arc

Complex meristematic activity induced by Eucecidoses minutanus on Schinus engleri turns shoots into galls

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