Facilitators or predators? The role of seed-feeding beetles in the germination of an ornamental and invasive plant in an urban environment
The role of seed-feeding beetles in the germination of an ornamental and invasive plant in an urban environment
DOI:
https://doi.org/10.24221/jeap.9.4.2024.6348.247-252Keywords:
Acanthoscelides macrophthalmus, biological control, Leucaena leucocephala, plant health, urban ecology, seed damageAbstract
Leucaena leucocephala is a forage legume that provides cellulose, firewood, and shade in cities, although it presents a dangerous allelopathic and invasive potential. Its main natural enemy is the endophytic beetle Acanthoscelides macrophthalmus (Chrysomelidae: Bruchinae), whose larvae penetrate seeds and can consume the entire endosperm and embryos. However, there is much to explore on how the abundance of larvae inside the seed affects the plant germination, resulting in an antagonistic (predation) or mutualistic (facilitation) interaction. Our goal was to test how these beetles affect the germination of L. leucocephala seeds from an urban environment in Uberlândia, MG. We hypothesized that a single larva inside the seed facilitates germination since the exit holes left break the physical dormancy and enable water imbibition. On the other hand, two or more larvae inside the same seed result in predation, as the amount of endosperm is not enough for beetle satiation before they attack the seed embryo. We collected 100 pods, dissected them, and quantified and qualified the seeds. In the germination experiment, we used healthy seeds (control), scarified healthy seeds (physical treatment), and attacked seeds (one, two, or more larvae). We found that beetles infested 74% of the sampled seeds. Independently of the abundance of larvae inside the seed, attacked seeds did not germinate. The scarified seeds germinate faster and in greater quantity. Therefore, our hypothesis was rejected for the studied plant population. Acanthoscelides macrophthalmus acts only as a predator in an antagonistic interaction that decreases the germination rate of L. leucocephala.Downloads
References
Brewbaker, J. L.; Sorensson, C. T. 1990. New tree crops from interspecific Leucaena hybrids. In: Janick, J.; Simon, J. E. (eds), Advances in New Crops. Timber Press, Portland, pp. 283-289.
Campbell, S.; Vogler, W.; Brazier, D.; Vitelli, J.; Brooks, S. 2019. Weed Leucaena and its significance, implications and control. Trop. Grassl. Forrajes Trop.. 7, 280-289. https://doi.org/10.17138/tgft(7)280-289
Effowe, T. Q.; Amevoin, K.; Nuto, Y.; Mondedji, D.; Glitho, I. A. 2010. Reproductive capacities and development of a seed bruchid beetle, Acanthoscelides macrophthalmus, a potential host for the mass rearing of the parasitoid, Dinarmus basalis. J Insect Sci, 10, 1-14. https://doi.org/10.1673/031.010.12901
Fox, C. W.; Wallin, W. G.; Bush, M. L.; Csezak, M. E.; Messina, F. J. 2012. Effects of seed beetles on the performance of desert legumes depend on host species, plant stage, and beetle density. Journal of Arid Environments, 80, 10-16. https://doi.org/10.1016/j.jaridenv.2011.12.008
Haga, E. B.; Rossi, M. N. 2016. The effect of seed traits on geographic variation in body size and sexual size dimorphism of the seed-feeding beetle Acanthoscelides macrophthalmus. Ecol Evol., 6, (19), 6892-6905. https://doi.org/10.1002/ece3.2364
Kato-Noguchi, H.; Kurniadie, D. 2022. Allelopathy and Allelochemicals of Leucaena leucocephala as an Invasive Plant Species. Plants, 11, 1672. https://doi.org/10.3390/plants11131672
Mauli, M. M.; Fortes, A. M. T.; Rosa, D. M.; Piccolo, G. S.; Marques, D.; Corsato, J. M.; Leszczynski, R. 2009. Alelopatia de Leucena sobre soja e plantas invasoras. Semina: Ciências Agrárias, 30, 55-62. https://doi.org/10.5433/1679-0359.2009v30n1p55
Oliveira, T. C. T.; Brandão-Dias, P. F. P.; Egan, S. P.; Morales-Silva, T.; Zaldívar-Riverón, A.; Silva, V. H. D.; Oliveira, G. M.; Del-Bianco, L. F. 2023. Description of the herbivore and natural enemy community associated with the seeds of an invasive plant in Brazil. Ecol. Entomol., 48, 669-882. https://doi.org/10.1111/een.13261
Peixoto, P. V.; França, T. N.; Cunha, B. M.; Tavares, D. V. A. M.; Brito, M. F. 2008. Spontaneous poisoning by Leucaena leucocephala in a goat from Rio de Janeiro State, Brazil. Ciência Rural, 38, 551-555.
Raghu, S.; Wiltshire, D.; Dhileepan, K. 2005. Intensity of pre-dispersal seed predation in the invasive legume Leucaena leucocephala is limited by the duration of pod retention. Austral Ecology, 30, 310-318. https://doi.org/10.1111/j.1442-9993.2005.01475.x
Ribeiro-Costa, C. S.; Almeida, L. M. 2012. Seed-chewing beetles (Coleoptera: Chrysomelidae: Bruchinae). In: Panizzi, A. R.; Parra, J. R. P. (eds). Insect bioecology and nutrition for integrated pest management. CRC Press, Boca Raton, pp. 325-352.
Rodrigues L. M. S; Viana J. H.; Ribeiro-Costa C. S.; Rossi, M. N. 2012. The extent of seed predation by bruchine beetles (Coleoptera: Chrysomelidae: Bruchinae) in a heterogeneous landscape in southeastern Brazil. Coleopt Bull., 66, (3), 271-279. https://doi.org/10.1649/072.066.0315
Rossi, M. N. 2019. Laboratório de Ecologia Populacional. Acanthoscelides macrophthalmus. Available at: https://rossiunifesp.wixsite.com/lepop. Access at: November 21, 2019.
Silva, A. V.; Rossi, M. 2019. When a seed feeding beetle is a predator and also increases the speed of seed germination: an intriguing interaction with an invasive plant. Evolutionary Ecology, 33, 211-232. https://doi.org/10.1007/s10682-019-09974-3
Sousa-Lopes, B.; Alves-da-Silva, N.; Ribeiro-Costa, C. S.; Del-Claro, K. 2019. Temporal distribution, seed damage and notes on the natural history of Acanthoscelides quadridentatus and Acanthoscelides winderi (Coleoptera: Chrysomelidae: Bruchinae) on their host plant, Mimosa setosa var. paludosa (Fabaceae), in the Brazilian Cerrado. J Nat Hist, 53, 611-623. https://doi.org/10.1080/00222933.2019.1606358
Sousa-Lopes, B.; Santos, A. T.; Ribeiro-Costa, C. S.; Del-Claro, K. 2020. Spatio-temporal variation in seed traits affects the occurrence and body-size pattern of a seed-feeding beetle (Chrysomelidae: Bruchinae) in Brazilian Cerrado. Acta Oecologica, 105, 103579. https://doi.org/10.1016/j.actao.2020.103579
Stone, B. C. 1970. The flora of Guam. Micronesica, 6, 1-659.
Tuda, M.; Wu, L. H.; Tateishi, Y.; Niyomdham, C.; Buranapanichpan, S.; Morimoto, K. 2009. A novel host shift and invaded range of a seed predator, Acanthoscelides macrophthalmus (Coleoptera: Chrysomelidae: Bruchinae), of an invasive weed, Leucaena leucocephala. Entomol. Sci., 12, 1-8. https://doi.org/10.1111/j.1479-8298.2009.00297.x
Vassilou, V. A.; Papadoulis, G. T. 2008. First record of Acanthoscelides macrophthalmus (Schaeffer) (Coleoptera: Bruchidae) in Cyprus. Entomologia Hellenica, 17, 52-55. https://doi.org/10.12681/eh.11616
Wu, L. H.; Wang, C. P.; Wu, W. J. 2012. Description and differentiation of the four larval instars of Acanthoscelides macrophthalmus (Coleoptera: Chrysomelidae: Bruchinae). Ann Entomol Soc Am, 105, 259-267. https://doi.org/10.1603/AN11129
Zar, J. H. 2010. Biostatistical analysis. Pearson Prentice Hall, New Jersey, Fifth Edition. 944p.
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