1,721,484 research outputs found
FIGURES 13–15 in Synopsis and descriptions of two new species
No full textFIGURES 13–15. Female genitalia of Argyrotaenia species. 13, A. sphaleropa; 14, A. loxonephes; 15, A. tucumana; 16, A. pomililiana.Published as part of Trematerra, Pasquale & Brown, John W., 2004, Synopsis and descriptions of two new species, pp. 1-12 in Zootaxa 574 on page 12, DOI: 10.5281/zenodo.15787
FIGURES 1–8 in Synopsis and descriptions of two new species
No full textFIGURES 1–8. Adults of Argyrotaenia species. 1, A. pomililiana (male); 2, A. pomililiana (female); 3, A. tucumana (male); 4, A. tucumana (female); 5, A. loxonephes (male); 6, A. loxonephes (female); 7, A. sphaleropa (male); 8, A. sphaleropa (female).Published as part of Trematerra, Pasquale & Brown, John W., 2004, Synopsis and descriptions of two new species, pp. 1-12 in Zootaxa 574 on page 10, DOI: 10.5281/zenodo.15787
Sulle fotografie danneggiate. Gestione degli organismi infestanti
Full text linkIl testo fornisce informazioni di carattere generale sulle specie animali (principalmente insetti e roditori) che con maggiore frequenza si rintracciano negli ambienti di conservazione delle fotografie e sui danni che essi possono arrecare. Una parte è dedicata alle metodologie e alle strategie di prevenzione nonché ai diversi metodi di lotta capaci di limitare le infestazioni. Sono trattate anche le varie tipologie di tecniche fotografiche e delineate le problematiche del restauro conservativo utili ad arginare gli effetti del deterioramento. Alla realizzazione dell’opera hanno contribuito diversi Autori, specialisti in vari campi disciplinari della biologia applicata e delle attività di studio interessate alla valorizzazione, conservazione, tutela e fruizione dei beni culturali
Influenza della struttura forestale e dell’occorrenza del legno morto sulla fauna saproxilica e sulla presenza di microhabitats: un caso studio nell’abetina di “Abeti Soprani” (Molise)
No full textRelazioni tra struttura forestale, indicatori di naturalità e fauna saproxilica: un caso studio nell’abetina di “Abeti Soprani” (Molise)
No full textSpatial patterns of saproxylic beetles in a relic silver fir forest (Central Italy), relationships with forest structure and biodiversity indicators
No full textThe conservation of biological diversity is one of the main goals for managing forests in an ecologically sustainable way. Presence and abundance of microhabitats, such as tree cavities or bark pockets, can be conveniently used as indicators to evaluate the effectiveness of sustainable forest management measures. In Mediterranean forest ecosystems, the relationships between stand-structure attributes and species-diversity indicators are still poorly studied. We described the structural attributes, deadwood characteristics and microhabitat occurrence in a silver fir forest of Central Apennines (Italy), which has not been submitted to silvicultural interventions for several decades. We assessed linkages between these characteristics and the abundance, distribution and diversity of saproxylic beetle fauna. A systematic aligned sampling method was conduced on 240 ha, examining 50 plots of 530 m2 each. Saproxylic beetles were sampled using window flight traps and emergence traps in relation to abundance and species richness at the plot level, but also on decaying deadwood. The heterogeneity in types and frequencies of microhabitats, and the link between structural attributes associated with stand complexity and saproxylic species, were also analysed. With the aim of describing the complex saproxylic ecological network, beetle species were classified according to the type of interactions with wood and other insects fauna, but also in relation to the trophic guilds. Linear regressions were conducted for highlighting metric variability and relationships between parameters, while geostatistical analyses were used to describe the spatial variability of structural features and the spatial pattern of beetle distributions. Results of linear regression and geostatistical analysis showed how the saproxylic beetle community is influenced by the amount, type and stage of decay of deadwood, but also by the forest structural complexity and the occurrence of microhabitats. Gap dynamics and natural disturbances had effects on deadwood amounts and microhabitat abundance, which was significantly higher than in managed and structurally simplified forest stands. Most of the entomological variables (namely, Families, Species, Total individuals, Saproxylic individuals, Staphylinidae, Elateridae, Nothodes parvulus, Curculionidae, Ernoporus fagi, Phyllobius emery) were clumped, highlighting the existence of aggregation areas in the sampled forest. In several cases the insect distribution was linked to the spatial pattern of forest attributes, particularly deadwood components
Influenza della struttura forestale, del legno morto e dei microhabitat sulla coleotterofauna saproxilica: un caso studio nell’abetina di “Abeti Soprani” (PescopennataroMolise)
No full textArgyrotaenia sphaleropa Meyrick 1909
No full textArgyrotaenia sphaleropa (Meyrick, 1909) Figs. 7, 8, 12, 13 Diagnosis. Argyrotaenia sphaleropa can be distinguished easily from other Argentine Argyrotaenia by its characteristic forewing color (darker than other species), pattern (more complex and with less dimorphism) and shape (usually with a more sinuate costa) (Figs. 7, 8) (see Clarke, 1958 for an additional illustration of the adult); by its distally expanded uncus and short valva in the male genitalia (Fig. 12); and by the short sterigma in the female genitalia, with a well developed anteostial part (Fig. 13) (see Köhler, 1940 and Clarke, 1958 for additional figures of the genitalia). Types. Lectotype, ɗ (sphaleropa), Bolivia, Sapago, “S..07” (BMNH). Two paralectotype males, same data as lectotype (BMNH). Holotype, ɗ (fletcheriella), Argentina, Tigre, Bourquin Collection. The lectotype of A. sphaleropa was designated by Clarke (1958), who figured the adult and male genitalia. Köhler (1940) figured the male and female genitalia of E. fletcheriella. Distribution. Argyrotaenia sphaleropa is a common and widespread species in the New World tropics; Razowski and Becker (2000) reported it from Bolivia, Brazil, Uruguay, and Argentina. We have examined specimens that appear to be referable to this species from Argentina, Bolivia, Brazil, Panama, Peru, and Uruguay (USNM). Pastrana (in litt.) reported it from Chaco, Tucumán, Santa Fé, Buenos Aires, and Delta del Paraná in Argentina. Specimens Examined. ARGENTINA: Tigre, Jun 1939 (1 Ψ), Aug 1941 (1 ɗ), Bourquin (USNM). Buenos Aires, 1939 (2 ɗ), r.f. Vitis vinifera, Pastrana (USNM). BOLIVIA: Songo, May 1907 (1 ɗ, paralectotype) (USNM). BRAZIL: Santa Catarina: São Bento do Sol, 2800 ', 6–9 Mar 1995 (2 ɗ, 1 Ψ), R. Leuschner (USNM). São Paulo: Ribeirão Preto, 4– 17 Mar 1939 (1 ɗ, 3 Ψ), E. J. Hambleton (USNM). Campinas, 11 Mar 1936 (1 ɗ), 2 Apr 1936 (1 ɗ), E. J. Hambleton (USNM). Nova Teutonia: 27 ° 11 ' B, 52 ° 23 ' L, Jun 1938 (1 ɗ), F. Plaumann (USNM). Rio Grande do Sul: Pinto Bandeira, May 2000 (5 ɗ, 5 Ψ), MECB, B. Gonçalves (USNM). Parana: Curitiba, 3 Mar 2002 (1 ɗ), 3 Dec 2001 (1 ɗ), r.f. Schinus terebinthifolius, J. Medal & H. Pedrosa (USNM). PANAMA: Cabima, May 1911 (1 ɗ), A. Busck (USNM). PERU: Lima: Nov 1954 (4 ɗ, 2 Ψ), [no collector], May 1932 (2 Ψ), Salmon & Wille, 10 Feb 1950 (2 ɗ), de la Torre (USNM). URUGUAY: Montevideo, Sayago, 23 Aug 1970 (1 ɗ), 28 Mar 1974 (1 ɗ, 2 Ψ), M. Moartoria (USNM), 5 Apr 1967 (2 ɗ), r.f. Medicago sativa, Morey, Moratorio & Casini (USNM), 20 Jan 1965 (1 Ψ), r.f. Pyrus malus, Mory & Casella (USNM); Montevideo, Villa Colón, 24 Nov 1965 (2 Ψ), r.f. Mentha rotundifolia, Morey (USNM), 11 Nov 1965 (1 ɗ), r.f. Salix vitellina, C. Morey (USNM); Montevideo, Lag. Morán, 26 Apr 1964 (1 ɗ), r.f. Schinus longifolia, Morey & Casella (USNM); Montevideo, 14 Mar 1940 (3 ɗ, 1 Ψ), r.f. rose, E. Parker (USNM); San José, Mar 1973 (2 ɗ, 1 Ψ), C. Carbonell (USNM). Biology. In his description of the early stages, Bourquin (1940) reported larvae from the fruit of Solanum bonariense (Solanaceae) and the flower heads of Cosmos sp. and Baccharis cf. salicifolia (Asteraceae). Pastrana (in litt.) reported the following hosts: Ilex paraguariensis (Aquifoliaceae); Araucaria angustifolia (Araucariaceae); Lonicera japonica (Caprifoliaceae); Chrysanthemum vulgare, Cosmos bipinnatus, Dahlia pinnata, Wedelia glauca (all Asteraceae); Antirrhinum majus (Scrophulariaceae); Pelargonium domesticum (Geraniaceae); Zea mays (Poaceae); Mentha piperita (Lamiaceae); Laurus nobilis, Nectandra saligna, Ocotea acutifolia (Lauraceae); Acacia farnesiana, Acacia sp., Arachis hypogaea, Medicago sativa, Phaseolus vulgaris, Vigna sinensis (Fabaceae); Magnolia grandiflora (Magnoliaceae); Rapanea lorentziana (Myrsinaceae); Ligustrum lucidum, L. sinense (Oleaceae); Polygonum sp. (Polygonaceae); Punica granatum (Punicaceae); Crataegus sp., Malus sylvestris, Prunus domestica, P. p e r s i c a, Pyrus communis, Rosa spp. (Rosaceae); Citrus aurantifolia, C. paradisi, C. sinensis, C. sp., Ruta chalepensis (Rutaceae); Salix humboldtiana (Salicaceae); Capsicum annuum, Cestrum parqui, Lycopersicum esculentum, Solanum bonariense, S. tuberosum (Solanaceae); Apium graveolens (Apiaceae); and Vitis vinifera (Vitaceae). Because this species is distinct from other Argentine Argyrotaenia, we assume that these host plants are correctly attributed to A. sphaleropa. Specimens in the USNM are reared from the following hosts: Diospyros khaki (Ebenaceae), Lantana camera (Verbenaceae), Medicago sativa (Fabaceae), Mentha rotunifolia (Lamiaceae), Persea sp. (Lauraceae), Pyrus malus, Rosa sp. (both Rosaceae), Salix vitellina (Salicaceae), Schinus terebinthifolius, S. longifolia (Anacardiaceae), Vitis sp., and Vitis vinifera (Vitaceae). The sex pheromone of this species recently was reported by Nuñez et al. (2002).Published as part of Trematerra, Pasquale & Brown, John W., 2004, Synopsis and descriptions of two new species, pp. 1-12 in Zootaxa 574 on pages 6-7, DOI: 10.5281/zenodo.15787
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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