Same but different: Diversity and complexity of an arthropod trophic network and comparative seed viability of an invasive and a native legume species

Sanabria-Silva, Ana María; Amarillo‐Suárez, Ángela R.

doi:10.1016/j.jaridenv.2017.04.004

Cited by 5 publications

(10 citation statements)

References 23 publications

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“…However, previous studies on seed germination in this species show that in addition to the known harmful effects of seed-eating beetles, bruchids leave a hole at the time of adult emergence. The hole increases water retention by seeds; and in cases where the embryo is alive, the germination time decreases (Fox et al, 2010;Sanabria-Silva & Amarillo-Suárez, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Recent phylogenetic studies show that there is more than one species of Stenocorse. Stenocorse sudamericanus, is only found in Colombia Zaldivar-Riverón et al, 2019), and is a parasitoid of seed beetles that parasitizes native legume seeds such as P. guachapele, S. riparia, Chloroleucon bogotense Britton & Killip, and A. farnesiana (Amarillo-Suárez, 2010;Pizano & García, 2014;Sanabria-Silva & Amarillo-Suárez, 2017). Thus, the native parasitoid Stenocorse sudamericanus successfully managed to colonize an exotic species such as L. leucocephala.…”

Section: Discussionmentioning

confidence: 99%

“…Last, we analyzed the chemical composition of the seeds in order to determine the differences between species The analysis of seeds was done according to the procedures described in detail by Amarillo et al (2017). We used dry, clean seeds of P. guachapele and L. leucocephala with no evidence of insects developing in them.…”

Section: Methodsmentioning

confidence: 99%

“…Nevertheless, in some cases when beetles do not affect the embryo, they may increase the viability of the seeds through mechanical scarification. These insects develop in the seeds leaving holes that facilitate the entry of water (Fox et al, 2010;Sanabria-Silva & Amarillo-Suárez, 2017). The seeds impose a strong evolutionary barrier for many insects because they are hard, have very little water content, have diverse chemical composition, as well as a great suite of secondary compounds (Amarillo-Suárez et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…These insects develop in the seeds leaving holes that facilitate the entry of water (Fox et al, 2010;Sanabria-Silva & Amarillo-Suárez, 2017). The seeds impose a strong evolutionary barrier for many insects because they are hard, have very little water content, have diverse chemical composition, as well as a great suite of secondary compounds (Amarillo-Suárez et al, 2017). In this way, seed-associated insect communities are expected to be very specific for each plant species.…”

Section: Introductionmentioning

confidence: 99%

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Antagonistic interaction networks in a native and an exotic legume species in Colombian tropical dry forest

Camacho-Erazo

Robles

Amarillo‐Suárez

2021

AZM

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Las interacciones entre plantas y animales desempeñan un papel fundamental en el funcionamiento y la estructura de los ecosistemas. Se espera que las comunidades de insectos asociados a semillas sean muy específicas para cada especie de planta debido a la gran cantidad de barreras físicas y químicas que las semillas imponen a los herbívoros. Además, las especies leguminosas, el taxón vegetal dominante en el bosque seco tropical, ofrecen una gran cantidad de recursos para la especialización de insectos, estructurando comunidades especiliazadas de herbivoros. Sin embargo, la introducción de especies exóticas en este ecosistema puede reducer la diversidad y simplificar las interacciones. Mediante el análisis de redes ecológicas, comparamos la diversidad y estructura de los insectos asociados a las semillas y sus parasitoides entre la especie de leguminosa nativa Pseudosamanea guachapele y la leguminosa exótica e invasora Leucaena leucocephala. También evaluamos las diferencias en la composición química de semillas con el fin de determinar en qué medida ésta podría ayudar a explicar las diferencias en las comunidades de insectos asociadas. El estudio se llevó a cabo en un bosque seco tropical en el departamento de Tolima, Colombia. Encontramos siete especies de escarabajos y ocho especies de parasitoides. Las redes de interacción de insectos de ambas especies de plantas tenían baja conectividad, anidamiento, generalidad y vulnerabilidad. Leucaena leucocephala tuvo la mayor diversidad de escarabajos y parasitoides en comparación con P. guachapele, tal vez porque L. leucocephala produce semillas durante todo el año, mientras que P. guachapele tiene una estacionalidad marcada produciendo frutos sólo durante uno o dos meses del año. Identificamos un total de 26 compuestos en las semillas de los dos huéspedes. Las semillas de P. guachapele, tienen el doble de compuestos que las de L. leucocephala. Entre las principales diferencias entre la composición de las semillas de la planta hospedera se encuentran la composición de ácidos grasos, que ofrecen diferentes fuentes de colesterol para el desarrollo de insectos. Esto puede ayudar a explicar la presencia de especies de consumidores de semillas asociadas a cada planta. Es importante resaltar que las redes descritas aquí pueden cambiar a través del tiempo y los paisajes, haciendo interesante seguir analizando la variación en la riqueza y estructura de dichas redes con el fin de definir hasta qué punto las interacciones encontradas en este estudio se mantienen constantes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Antagonistic interaction networks in a native and an exotic legume species in Colombian tropical dry forest

Camacho-Erazo

Robles

Amarillo‐Suárez

2021

AZM

Self Cite

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Description of the herbivore and natural enemy community associated with the seeds of an invasive plant in Brazil

Oliveira

Brandão-Dias

Egan

et al. 2023

Ecological Entomology

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Studies have shown that fruits of plants from the Fabaceae family harbour a diverse community of herbivorous insects and their natural enemies. Despite this observation, we still lack information on the specific interactions within these multi‐trophic communities. Herein, we describe the food web of insects associated with fruits and seeds of Leucaena leucocephala (Fabaceae), an invasive plant in Brazil, and their relationship with plant traits including seed biomass. We found 17 species of insects distributed across three trophic levels. The main herbivore species sampled was Acanthoscelides macrophthalmus (Coleoptera, Chrysomelidae, Bruchinae), which was responsible for most of the seed predation and associated with the highest parasitoid biodiversity (N = 10 species). Four other herbivorous species were lower in abundance, including a previously unreported Lepidopteran species with two parasitoids and one hyperparasitoid associated with it. Seeds with more mass promoted an increase in insect abundance, insect species richness, and the number of links and connectivity. We observed two native parasitoid species, Paracrias pluteus and Stenocorse suldamericanos, shift from herbivores on native plants to herbivores on the invasive L. leucocephala, consistent with a potential host shift. However, more investigation is required to ascertain the effects of recent shifts of native insect communities (on native plants) to non‐native ones and their consequences on plant fitness. Our study contributes to the understanding of the dynamics of communities and food webs in unknown systems, specifically in fruits of an invasive plant, and provides information about the influence of different plant traits on these communities.

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Non‐native invasive plants in tropical dry forests: a global review of presence, impacts, and management

Hardy,

Kuebbing,

Duguid

et al. 2024

Restoration Ecology

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Tropical dry forests (TDF) are among the most‐threatened terrestrial ecosystems, experiencing ongoing conversion to agricultural fields, pasture, and human settlements. Human disturbances are often precursors to invasion of ecosystems by non‐native species, but research on invasion patterns in tropical ecosystems is sparse, and there is no comprehensive synthesis of invasive species in TDF. We conducted a review of published scientific literature to catalog and synthesize information about invasion by non‐native plants in TDF ecosystems across the globe, drawing out patterns in the invasion of these ecosystems. We found that 130 invasive plant species were documented as present in TDF, but only 25 of these species were mentioned in three or more articles. Almost all 25 of these more‐studied invasive species—mostly pasture grasses, woody legumes, and climbers—have been intentionally cultivated for agricultural or ornamental purposes. Many of these plants are native to open‐canopy savanna or forest edge habitats and benefit from human‐altered disturbance regimes (burning, grazing, and fuelwood and timber harvesting) of TDF fragments within agricultural landscapes. Field studies show that management approaches incorporating invasive removal, native plantings, and reduction in agricultural disturbance (e.g. ungulate fencing and fire control) simultaneously are often the most successful at reducing invasive plant cover. However, management studies in TDF have focused on a limited number of invasive species, and most were conducted in India and Hawaii. Global differences in TDF soils, natural fire regimes, and historic and current land use by humans influence modern biogeographic patterns of invasion and the feasibility of restoration options.

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Same but different: Diversity and complexity of an arthropod trophic network and comparative seed viability of an invasive and a native legume species

Cited by 5 publications

References 23 publications

Antagonistic interaction networks in a native and an exotic legume species in Colombian tropical dry forest

Antagonistic interaction networks in a native and an exotic legume species in Colombian tropical dry forest

Description of the herbivore and natural enemy community associated with the seeds of an invasive plant in Brazil

Non‐native invasive plants in tropical dry forests: a global review of presence, impacts, and management

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