02796nas a2200181   4500008004100000020001400041245011600055210006900171260000800240300001200248490000800260520213700268653001302405100002302418700001502441700002402456856013402480       2012                        eng d  a0030-129900aHost selection and responses to forest fragmentation in acorn weevils: inferences from dynamic occupancy models0 aHost selection and responses to forest fragmentation in acorn we  cApr  a623-6330 v1213 aPrior studies on species-specific responses to habitat alteration have demonstrated that niche breadth is positively associated with patch occupancy rates in landscapes fragmented by agriculture. However, these studies generally have focused on vertebrates and relied upon data collected at a single point in time, neglecting dynamic processes that could alter inferences. We studied the effects of host selection and forest fragmentation on population dynamics of acorn weevils Curculio, the primary insect seed predators of oaks in North America. Detection/non-detection data were collected from 174 red and white oaks in 19 forested fragments from 20052008. We used dynamic multi-season site-occupancy models within a Bayesian framework to explore variation in patch (tree-level) occupancy dynamics of three species of weevils that vary in their specialization, i.e. their relative selection of red and white oak as hosts: C. pardalis (white oak specialist), C. sulcatulus (generalist) and C. proboscideus (generalist). Contrary to expectations, the specialist exhibited greater estimated rates of occupancy than generalists. However, red oak trees occupied by the white oak specialist appeared to function as sink populations maintained by frequent colonization following local extinction. Specialists also exhibited greater relative variation in occupancy and relative abundance on their host trees among years. Generalists exhibited lower local extinction and colonization rates than the specialist. Occupancy and vital rates of weevils on a host tree increased with acorn production and were significantly influenced by neighborhood forest density. Our results suggest that across much of their range in the eastern United States acorn weevils exist in fragmented, temporally dynamic landscapes, with generalists occurring on a lower proportion of usable trees but buffered by access to more suitable patches and greater patch-specific survival. More generally, our results demonstrate that estimates of specialization derived from occupancy data may be misleading in the absence of patch-specific information on vital rates.10aCurculio1 aGovindan, Byju, N.1 aKery, Marc1 aSwihart, Robert, K.  uhttps://weevil.myspecies.info/host-selection-and-responses-forest-fragmentation-acorn-weevils-inferences-dynamic-occupancy-models01869nas a2200517   4500008004100000245009200041210006900133260001200202300001200214490000600226520047600232653001400708653001700722653001700739653002000756653001800776653001600794653001200810653001300822653001700835653001700852653001300869653001800882653001000900653001400910653001500924653001100939653001400950653001400964653001200978653001300990653001201003653001001015653001701025653001701042653001501059653001601074653001501090653001201105100002001117700003001137700003201167700002001199700001801219856011401237       2010                        eng d00aWeevils (Coleoptera: Curculionidae) from Iranian rice fields and surrounding grasslands0 aWeevils Coleoptera Curculionidae from Iranian rice fields and su  cJanuary  a163-1690 v53 aIn a total of 45 species of 22 genera including, Stenocarus, Tychius, Ceutorhynchus, Curculio, Archarius, Coniatus, Donus, Hypera, Limobius, Conorhynchus, Pachycerus, Cleonis, Coniocleonus, Chromoderus, Bothynoderes, Rhinocyllus, Bangasternus, Microlarinus, Eustenopus, Larinus, Lixus, Hypolixus, Otiorhynchus and 5 subfamilies including, Ceutorhynchinae, Curculioninae, Hyperinae, Lixinae and Entiminae were collected from Iranian rice fields and surrounding grasslands.10aArcharius10aBangasternus10aBothynoderes10aCeutorhynchinae10aCeutorhynchus10aChromoderus10aCleonis10aConiatus10aConiocleonus10aConorhynchus10aCurculio10aCurculioninae10aDonus10aEntiminae10aEustenopus10aHypera10aHyperinae10aHypolixus10aLarinus10aLimobius10aLixinae10aLixus10aMicrolarinus10aOtiorhynchus10aPachycerus10aRhinocyllus10aStenocarus10aTychius1 aGhahari, Hassan1 aArzanov, Yury, Genrikh'vi1 aLegalov, Andrei, Aleksandro1 aTabari, Mehrdad1 aOstovan, Hadi  uhttps://weevil.myspecies.info/weevils-coleoptera-curculionidae-iranian-rice-fields-and-surrounding-grasslands01234nas a2200169   4500008004100000020001400041245010000055210006900155260001300224300001200237490000700249520061400256653001300870100003500883700003200918856011400950       2010                        eng d  a1134-609400aThe Curculio beetles (Coleoptera, Curculionidae) of the Cabaneros National Park (central Spain)0 aCurculio beetles Coleoptera Curculionidae of the Cabaneros Natio  c30 junio  a265-2720 v463 aSeven species of Curculio Linnaeus, 1758 have been recorded from the Iberian Peninsula. Five of them are associated with Quercus species, typical trees of Mediterranean forests. In samplings carried out in Cabaneros National Park (Ciudad Real, central Spain) from 1998 to 2006 four species were found (C. elephas, C. venosus, C. pellitus and C. glandium). Information about their abundance, phenology and sex ratios is provided; the specific preferences of Curculio species for variousQuercus species and other plants are also given. Graphs and illustrations of species found in the Park are equally included.10aCurculio1 aFernandez-Carrillo, Jose, Luis1 aFernandez-Carrillo, Enrique  uhttps://weevil.myspecies.info/curculio-beetles-coleoptera-curculionidae-cabaneros-national-park-central-spain02493nas a2200169   4500008004100000020001400041245007600055210006900131260000900200300001200209490000800221520194600229653001302175100001602188700001902204856010002223       2007                        eng d  a0029-854900aMulti-trophic effects of ungulate intraguild predation on acorn weevils0 aMultitrophic effects of ungulate intraguild predation on acorn w  cJune  a533-5400 v1523 aPredators and parasitoids may contribute to controlling the population sizes of phytophagous insects, and this has been shown to benefit plants. Phytophagous insects may also be killed by other herbivores (intraguild predation), usually larger-sized vertebrates that ingest insects accidentally while feeding on common food sources. We studied the intraguild predation on acorn weevils by ungulates and assessed the consequences for weevil populations. Infested acorns are prematurely abscised and the weevil larvae finish their development inside the acorns after being dropped. Our results show that weevil larvae were killed by ungulates eating the infested acorns on the ground. Ungulates did not discriminate between infested and sound acorns, and the probability of a larva being incidentally eaten was inversely related to acorn availability. Thus, predation risk was enhanced by the premature drop of infested acorns when acorn availability on the ground was low. Predation rates on infested acorns were much higher where ungulates were present, and acorn infestation rates were significantly lower. However, ungulates did not provide the oaks any net benefit, since the reduction of infestation rates was not enough to compensate for the large amounts of sound acorns eaten by ungulates. Seed predation is usually studied as a progressive loss of seeds by pre- and post-dispersal predators, but the interactions between them are usually not considered. We show that intraguild predation on insects by large ungulates had an effect on the structure of the foraging guild, as the proportion of acorns predated by insects decreased; however, replicating the same experimental design in different ecological scenarios would increase the strength of these results. In conclusion, the present study shows the importance of considering the multi-trophic interactions between seed predators in order to have a complete picture of granivory.10aCurculio1 aBonal, Raul1 aMunoz, Alberto  uhttps://weevil.myspecies.info/multi-trophic-effects-ungulate-intraguild-predation-acorn-weevils02525nas a2200193   4500008004100000020001400041245012500055210006900180260000800249300001400257490000800271520181700279653001302096653002102109100001602130700002602146700002402172856013502196       2011                        eng d  a0029-854900aComplex selection on life-history traits and the maintenance of variation in exaggerated rostrum length in acorn weevils0 aComplex selection on lifehistory traits and the maintenance of v  cDec  a1053-10610 v1673 aTrophic interactions can trigger the development of exaggerated specialized characters and promote morphological diversification. For example, acorn weevils (genus Curculio) present strikingly long rostrums, which are used by females to perforate oviposition holes through the seed coat. Species exhibiting longer rostrums are known to exploit larger acorns, and therefore rostrum length is thought to be subject to selection to match the preferred acorn type. However, rostrum length is strongly correlated with body size, and morphological divergence could result from either selection on rostrum length for optimal food exploitation or from other pressures acting on body size. We collected infested acorns at oak forests where the large Curculio elephas and the small-bodied Curculio glandium co-occur. There were no interspecific differences in adult female body size to rostrum length allometric relationships, and rostrum length is equally correlated with body size in either species. MtDNA-based species identification showed that C. glandium larvae were present within acorns of all sizes, whereas C. elephas larvae were restricted to acorns above a minimum size, irrespective of oak species. Hence, exploitation of large acorns can hardly have triggered rostrum enlargement, as the small sized C. glandium adults (with short rostrums) could perforate and oviposit in both small and large acorns. Rather, increased rostrum length is probably a by-product of the larger body sizes of individuals emerging from bigger acorns, which allow increased larval size and enhance larval survival likelihood. Summarizing, when exaggerated feeding traits co-vary with other body features, interspecific morphological variability may result from contrasting selective pressures acting on these correlated characters.10aCurculio10aCurculio elephas1 aBonal, Raul1 aEspelta, Josep, Maria1 aVogler, Alfried, P.  uhttps://weevil.myspecies.info/complex-selection-life-history-traits-and-maintenance-variation-exaggerated-rostrum-length-acorn-wee00944nas a2200157   4500008004100000245011600041210006900157300001200226490000700238520034700245653001300592653001200605653001400617100002000631856013500651       2006                        eng d00aNeue Arten der Gattungen Curculio Linne und Ithaura Pascoe aus Franzoesisch Guayana (Coleoptera: Curculionidae)0 aNeue Arten der Gattungen Curculio Linne und Ithaura Pascoe aus F  a429-2360 v763 aCurculio guyanensis sp.n. (Coleoptera: Curculionidae) is described as the first member of this widely distributed genus from South America. The genus Ithaura is recorded from French Guyana for the first time with three species. I. guyanensis sp.n. and quadraticollis sp.n. are described and a key to the species of French Guyana is presented.10aCurculio10aIthaura10aLymantini1 aRheinheimer, J.  uhttps://weevil.myspecies.info/neue-arten-der-gattungen-curculio-linne-und-ithaura-pascoe-aus-franzoesisch-guayana-coleoptera-curcu00951nas a2200157   4500008004100000245011700041210006900158300001200227490000700239520035300246653001300599653001200612653001400624100002000638856013500658       2006                        eng d00aNeue Arten der Gattungen Curculio Linne und Ithaura Pascoe aus Franzoesisch Guayana (Coleoptera: Curculionidae).0 aNeue Arten der Gattungen Curculio Linne und Ithaura Pascoe aus F  a429-2360 v763 aCurculio guyanensis sp.n. (Coleoptera: Curculionidae) is described as
the first member of this widely distributed genus from South America.
The genus Ithaura is recorded from French Guyana for the first time
with three species. I. guyanensis sp.n. and quadraticollis sp.n. are
described and a key to the species of French Guyana is presented.
10aCurculio10aIthaura10aLymantini1 aRheinheimer, J.  uhttps://weevil.myspecies.info/neue-arten-der-gattungen-curculio-linne-und-ithaura-pascoe-aus-franzoesisch-guayana-coleoptera-curcu