Acta Zoologica (Impact Factor: 1.3). 01/2003; 89:153-168.
Source: DOAJ

ABSTRACT RESUMEN Con el proposito de estimar en que estrato del bosque tropical ocurre mayor diversidad de especies de insectos formadores de agallas y minadores de hojas, se realizaron muestreos desde marzo de 1997 a mayo de 1998 en dos bosques de la República de Panamá (Parque Natural Metropolitano y Fuerte Sherman). Nuestros resultados indican que en el dosel de ambos bosques existe mayor riqueza de insectos formadores de agallas y minadores de hojas que en el sotobosque, siendo la proporción de especies de estos dos grupos en el dosel y sotobosque de 2:1 respectivamente. El índice alfa de Fisher indica que los dos grupos de insectos son más diversos en el dosel de los dos bosques que en el sotobosque, siendo el dosel del Fuerte Sherman donde ocurre mayor abundancia de algunas morfoespecies. Palabras Claves: diversidad, dosel, insecto formador de agalla, insecto minador de hoja, Panamá, riqueza de especies, sotobosque. ABSTRACT To estimating in which layer of the tropical forest occurs the highest diversity of species of insect gall-makers and leaf miners, a survey was performed from March 1997 to May 1998 in two forests of the Republic of Panama (Parque Natural Metropolitano and Fuerte Sherman). Our results indicate that the canopy of tropical forest supports a higher species richness of insect gall-maker and leaf miners than the understorey. The proportion of species of both of these groups in the canopy and understorey is 2:1, respectively. The Fisher index alpha indicates that both groups of insects are more diverse in the canopy that in the understorey, the canopy of Fuerte Sherman being where the highest abundance of some morphospecies occurs.


Available from: Anayansi Valderrama, May 29, 2015
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    ABSTRACT: This book seeks to expose the reader to those studies which have made the greatest contribution to the body of knowledge surrounding the insect galls in the Neotropical region. There seems to be countless groups of researchers working both in Brazil and in other tropical regions of the Americas. The chapters presented here report the diversity of studies conducted to date as well as indicate the quality of the studies in progress.
    Neotropical Insect Galls, Edited by Geraldo Wilson Fernandes, Jean Carlos Santos, 01/2014: chapter 1: pages 1-14; Springer.
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    ABSTRACT: A relatively large number of studies reassert the strong relationship between galling insect diversity and extreme hydric and thermal status in some habitats, and an overall pattern of a greater number of galling species in the understory of scleromorphic vegetation. We compared galling insect diversity in the forest canopy and its relationship with tree richness among upland terra firme, várzea, and igapó floodplains in Amazonia, Brazil. The soils of these forest types have highly different hydric and nutritional status. Overall, we examined the upper layer of 1,091 tree crowns. Galling species richness and abundance were higher in terra firme forests compared to várzea and igapó forests. GLM-ANCOVA models revealed that the number of tree species sampled in each forest type was determinant in the gall-forming insect diversity. The ratio between galling insect richness and number of tree species sampled (GIR/TSS ratio) was higher in the terra firme forest and in seasonally flooded igapó, while the várzea presented the lowest GIR/TSS ratio. In this study, we recorded unprecedented values of galling species diversity and abundance per sampling point. The GIR/TSS ratio from várzea was approximately 2.5 times higher than the highest value of this ratio ever reported in the literature. Based on this fact, we ascertained that várzea and igapó floodplain forests (with lower GIA and GIR), together with the speciose terra firme galling community emerge as the gall diversity apex landscape among all biogeographic regions already investigated. Contrary to expectation, our results also support the "harsh environment hypothesis", and unveil the Amazonian upper canopy as similar to Mediterranean vegetation habitats, hygrothermically stressed environments with leaf temperature at lethal limits and high levels of leaf sclerophylly.
    PLoS ONE 12/2014; 9(12):e114986. DOI:10.1371/journal.pone.0114986 · 3.53 Impact Factor