1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia

Opción 1: Descargar recurso

Opción 2: Descargar recurso

Opción 3: Descargar recurso

Opción 4: Descargar recurso

Detalles del recurso


[Aim]: Host specificity within plant-feeding insects constitutes a fascinating example of natural selection that promotes inter-specific niche segregation. If specificity is strong, composition of local plant parasitic insect guilds is largely dependent on the presence and prevalence of the preferred hosts. Alternatively, if it is weak or absent, historic and stochastic demographic processes may drive the structuring of insect communities. We assessed whether the species composition of acorn feeding insects (Curculio spp. guilds) and their genetic variation change geographically according to the local host community. [Location]: An 800 km transect across California, USA. [Methods]: We used DNA taxonomy to detect potential Curculio cryptic speciation and assessed intra-specific genetic structure among sampling sites. We monitored larval performance on different hosts, by measuring the weight of each larva upon emerging from the acorn. Our phylogenetic and spatial analyses disentangled host specificity and geographical effects on Curculio community composition and genetic structure. [Results]: DNA taxonomy revealed no specialized cryptic species. Californian Curculio spp. were sister taxa that did not segregate among Quercus species or, at a deeper taxonomic level, between red and white oaks. Curculio species turnover and intra-specific genetic differentiation increased with geographical distance among localities irrespective of local oak species composition. Moreover, larval performance did not differ among oak species or acorn sizes when controlling for the effect of the locality. [Main conclusions]: Historical processes have contributed to the structuring of acorn weevil communities across California. Trophic niche overlapped among species, indicating that ecologically similar species can co-exist. Acorn crop inter-annual variability and unpredictability in mixed oak forests may have selected against narrow specialization, and facilitated co-existence by means of an inter-specific time partitioning of the resources. Wide-scale geographical records of parasitic insects and their host plants are necessary to understand the processes underlying species diversity.

Pertenece a



Bonal, Raúl -  Espelta, Josep Maria -  Muñoz, Alberto -  Ortego, Joaquín -  Aparicio, José Miguel -  Gaddis, Keith -  Sork, Victoria L. - 

Id.: 69790036

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveAcorn - 

Tipo de recurso: Artículo  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: openAccess

Requerimientos técnicos:  Browser: Any - 

Relación: [References] MINECO/ICTI2013-2016/AGL2014-54739-R
[References] Postprint
[References] http://dx.doi.org/10.1111/jbi.12733
[References] Sí

Fecha de contribución: 29-ago-2017


* Journal of Biogeography 43(8): 1620-1630 (2016)
* 0305-0270
* 10.1111/jbi.12733
* 1365-2699

Otros recursos del mismo autor(es)

  1. Impacts of human-induced environmental disturbances on hybridization between two ecologically differentiated Californian oak species Natural hybridization, which can be involved in local adaptation and in speciation processes, has be...
  2. Population genetics of Mioscirtus wagneri, a grasshopper showing a highly fragmented distribution The genetic consequences of population fragmentation and isolation are major issues in conservation ...
  3. Parental genetic characteristics and hatching success in a recovering population of Lesser Kestrels Decreased hatchability is a common consequence of inbreeding in oviparous organisms and it has been ...
  4. Natural hybridisation between kermes (Quercus coccifera L.) and holm oaks (Q. ilex L.) revealed by microsatellite markers Hybridisation between species of the genus Quercus is a common phenomenon as a result of weak reprod...
  5. Mismatch between the timing of oviposition and the seasonal optimum. The stochastic phenology of Mediterranean acorn weevils The timing of reproduction is predicted to match the period of maximum food availability. In this se...

Otros recursos de la mismacolección

  1. Indirect genetic effects—everything is special, everything is important: a comment on Bailey et al. Peer reviewed
  2. Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta) The colonisation of new suitable habitats is crucial for species survival at evolutionary scale unde...
  3. Melanins in Fossil Animals: Is It Possible to Infer Life History Traits from the Coloration of Extinct Species? Paleo-colour scientists have recently made the transition from describing melanin-based colouration ...
  4. The Co-management Committee of the Catalan sand-eel fishery: a bottom-up approach successfully delivering on sustainability for fish and fishing Sainz-Trápaga, Susana ... et. al.-- First Regional Symposium on Sustainable Small-Scale Fisheries in...
  5. Locations of wildlife-vehicle collisions during during November 2010-October 2011 in Lanzarote, Canary Islands Longitude, latitude, species and date of roadkills detected during 24 road surveys conducted twice a...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.