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1 October 2011 Extensive Settlement of the Invasive MEAM1 Population of Bemisia tabaci (Hemiptera: Aleyrodidae) in the Caribbean and Rare Detection of Indigenous Populations
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Abstract

Bemisia tabaci populations belonging to Middle East-Asia Minor one (MEAM1) and Mediterranean (MED) groups (formerly biotype B and Q, respectively) have spread throughout the world. Although the introduction of MEAM1 is documented from several Caribbean islands, it is generally not known whether MED has also been introduced; whether indigenous populations have survived; and if in the affirmative, to which group(s) they belonged. Whiteflies were collected from seven islands on various plant species. The prevalence of MEAM1 and non-MEAM1 individuals was assessed using a microsatellite approach validated with sequences of the mitochondrial cytochrome oxidase I (mtCOI) gene. Of the 262 samples tested, 247 exhibited the MEAM1 pattern, whereas none showed the MED pattern. The mtCOI gene was partially sequenced from a sample of individuals exhibiting MEAM1 (n = 15) and non-MEAM1 patterns (n = 8) and compared with type sequences. The 15 individuals exhibiting the MEAM1 pattern were confirmed to belong to MEAM1. Of the eight individuals representative of the six non-MEAM1 patterns, two belonged to the indigenous New World (NW) group of B. tabaci (NW), one belonged to a distinct species of Bemisia, and five belonged to MEAM1. One individual belonging to NW exhibited 99.9% nucleotide identity with a NW individual from Puerto Rico. The other was identified as the most divergent individual of the North and Central American genetic cluster. We conclude that a highly homogenous MEAM1 population has extensively settled in the Caribbean and that heterogeneous NW populations were still detectable although severely displaced.

© 2011 Entomological Society of America
Y. Muñiz, M. Granier, C. Caruth, P. Umaharan, C. Marchal, C. Pavis, E. Wicker, Y. Martínez, and M. Peterschmitt "Extensive Settlement of the Invasive MEAM1 Population of Bemisia tabaci (Hemiptera: Aleyrodidae) in the Caribbean and Rare Detection of Indigenous Populations," Environmental Entomology 40(5), (1 October 2011). https://doi.org/10.1603/EN11129
Received: 25 May 2011; Accepted: 9 August 2011; Published: 1 October 2011
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