Wide Ranging Insect Infestation of the Pioneer Mangrove Sonneratia alba by Two Insect Species along the Kenyan Coast
| Autor: | Ina Lehmann, Nico Koedam, E.N. Kioko, Elisha M'Rabu Jenoh, Farid Dahdouh-Guebas, Elisabeth M. R. Robert, Jared O. Bosire, Noah Ngisiange |
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| Přispěvatelé: | Faculty of Sciences and Bioengineering Sciences, Biology, General Botany and Nature Management |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Insecta 010504 meteorology & atmospheric sciences Range (biology) Marine and Aquatic Sciences lcsh:Medicine Forests Moths medicine.disease_cause 01 natural sciences Trees Geographical Locations Larvae Beetles lcsh:Science Lythraceae Multidisciplinary Ecology Geography integumentary system Rhizophoraceae Sciences bio-médicales et agricoles Plants Terrestrial Environments Insects Moths and Butterflies Mangrove Research Article Arthropoda Mangrove Swamps Biology 010603 evolutionary biology Ecosystems Host Specificity Species Specificity Infestation parasitic diseases medicine Animals Ecosystem 14. Life underwater Plant Diseases 0105 earth and related environmental sciences Life Cycle Stages Metamorphosis Ecology and Environmental Sciences fungi lcsh:R Organisms Biology and Life Sciences Aquatic Environments 15. Life on land biology.organism_classification Marine Environments Invertebrates Kenya Coasts Sonneratia alba 13. Climate action People and Places Africa Earth Sciences lcsh:Q PEST analysis Longhorn beetle Developmental Biology |
| Zdroj: | PLoS ONE, Vol 11, Iss 5, p e0154849 (2016) PLoS ONE PloS one, 11 (5 |
| Popis: | Insect infestation of mangroves currently threatens mangrove forest health and management. In the Western Indian Ocean region, little is known about insect damage to mangroves despite the fact that numerous infestations have occurred. In Kenya, infestations of Sonneratia alba have persisted for almost two decades, yet the taxonomic identity of the infesting pest(s), the extent of infestation, the pests' biology, the impacts of infestation on host and the ecosystem, the host's defensive strategies to the infestation are poorly understood. S. alba is a ubiquitous, pioneer mangrove species of the Indo-Pacific, occurring along the waterfront in a variety of mangrove ecosystem settings. Our main objectives were to identify the pest(s) responsible for the current dieback of S. alba in Kenya, and to determine the extent of infestation. To identify the pests responsible for infestation, we trapped emergent insects and reared larvae in the laboratory. To determine the overall extent of infestation within the S. alba zone, we assessed nine sites along the entire Kenyan coastline for the presence or absence of infested mangroves. Insect infestation in two mangrove embayments (Gazi and Mida) was quantified in depth. Two wood-boring insects were identified: a metarbelid moth (Lepidoptera, Cossoidea) of undescribed genus and the beetle Bottegia rubra (Cerambycidae, Lamiinae).The metarbelid moth infests mangroves in both northern (from Ngomeni to Kiunga) and southern regions (from Vanga to Mtwapa) of the Kenyan coast. B. rubra appeared in low density in Gazi, and in high density in Mida, Kilifi, and Ngomeni, with densities gradually decreasing northward. Insect infestation levels reached 18% in Gazi and 25% of S. alba stands in Mida. Our results indicate that B. rubra has the ability to infest young mangrove trees and expand its range, posing a danger to rehabilitation efforts where plantations have been established. Thus, there is great need for forest managers to address the recent increased levels of infestation in Kenyan mangroves; apart from the ecological interest such plant-herbivore relations bring in this ecosystem. SCOPUS: ar.j info:eu-repo/semantics/published |
| Databáze: | OpenAIRE |
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