Latitudinal patterns in tachinid parasitoid diversity (Diptera: Tachinidae): a review of the evidence.

 

Título: Latitudinal patterns in tachinid parasitoid diversity (Diptera: Tachinidae): a review of the evidence.
Identificador de recurso:  
Fecha: 2020-03-23
Autor: Burington, Zelia L.
Otros colaboradores: Inclán-Luna, Diego Javier.

Pollet, Marc.

Stireman III, John O.

Editorial: The Royal Entomological Society, Insect Conservation and Diversity.
Derechos: Acceso abierto

 

Descripción 1. Insect parasitoids may be an exception to the typical biogeographic pattern of increasing species richness at lower latitudes exhibited by most taxa. Evidence for this ‘anomalous’ latitudinal gradient has been derived from observations of hymenopteran parasitoids and it has been argued that other parasitoid groups should show a similar pattern of diversity. Several mechanisms have been proposed to explain this disparity, most notably the nasty host and resource fragmentation hypothese.
2. We review and evaluate these hypotheses with respect to tachinid flies (Diptera: Tachinidae), and bring to the argument evidence from eight trapping surveys from temperate and tropical regions in the Americas including the United States, Costa Rica, and Ecuador. We find no evidence that tachinid fly diversity is lower in the tropics than in the temperate region. Our results, along with other lines of evidence, rather suggest that New World Tachinidae likely conform to the same negative relationship between latitude and richness as their largely phytophagous host taxa.

3. We discuss geographic patterns of tachinid diversity in relation to ecological and evolutionary processes, and why they may differ from their hymenopteran parasitoid counterparts. Parasitoid taxa appear to vary strongly in their diversity responses to latitude and we concur with previous researchers that more survey data are necessary to reach strong conclusions about parasitoid latitudinal diversity patterns.

Claves Flies; insect surveys; latitudinal diversity gradient; nasty host hypothesis; resource fragmentation hypothesis; tropical biodiversity;  Hymenoptera; species abundance distribution.
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Nombre de archivo 2020-03-23