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| Registros recuperados: 7.979 | |
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| Ordines, Francesc; Lloret, Josep; Tugores, Pilar; Manfredi, Chiara; Guijarro, Beatriz; Jadaud, Angelique; Porcu, Cristina; Gil De Sola, Luis; Carlucci, Roberto; Sartini, Marina; Isajlovic, Igor; Massutti, Enric. |
| A new approach to recruitment overfishing diagnosis is presented. We hypothesize that condition of recruits should increase when recruitment failures are caused by fishing activity. This would be a consequence of the increase in trophic resource availability, because the population is smaller than that which the ecosystem could support. Temporal series of hake recruit condition were calculated from MEDITS survey data collected in Mediterranean geographical sub-areas (GSAs) 1, 6, 17 and 19 from 1994 to 2015. Multiple linear regressions were used to analyse the relationship between mean annual condition and abundance of recruits and climatic indices in each GSA. Significant correlations were only detected in GSA 6, where 69% of condition variability was... |
| Tipo: Text |
Palavras-chave: Merluccius merluccius; Fishery; Recruits; Condition index; Recruitment overfishing; MEDITS survey. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00513/62458/66762.pdf |
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| Moreira,Gilson R.P.; Pereira,Cristiano M.; Becker,Vitor O.; Specht,Alexandre; Gonçalves,Gislene L.. |
| ABSTRACT Larvae of many-plumed moths (Alucitidae), especially in the world-wide genus Alucita Linnaeus, 1758 are known as borers or gall-inducers on flowers, fruits and shoots of a few dicotyledonous families, including Bignoniaceae, Caprifoliaceae and Rubiaceae. However, there is no study available on the biology of the monotypic, Neotropical genus Prymnotomis Meyrick, 1931 except for its original description that was based on a single male, the holotype of Prymnotomis crypsicroca Meyrick, 1931 from Espirito Santo, Brazil. We describe here a second species for this genus, Prymnotomis cecidicola sp. nov. whose larvae induce galls on Cordiera elliptica (Cham.) Kuntze (Rubiaceae), a dioecious plant with dimorphic inflorescences found in the Brazilian... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alucitid moths; Brazilian Savanna; Insect galls; Prymnotomis; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100331 |
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| MARINHO,PEDRO R.D.; BOURGUIGNON,MARCELO; SILVA,RODRIGO B.; CORDEIRO,GAUSS M.. |
| Abstract: In this paper, we introduce a new three-parameter distribution by compounding the Nadarajah-Haghighi and geometric distributions, which can be interpreted as a truncated Marshall-Olkin extended Weibull. The compounding procedure is based on the work by Marshall and Olkin 1997. We prove that the new distribution can be obtained as a compound model with mixing exponential distribution. It can have decreasing, increasing, upside-down bathtub, bathtub-shaped, constant and decreasing-increasing-decreasing failure rate functions depending on the values of the parameters. Some mathematical properties of the new distribution are studied including moments and quantile function. The maximum likelihood estimation procedure is discussed and a particle swarm... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exponential distribution; Failure rate function; Geometric distribution; Maximum likelihood estimation; Nadarajah-Haghighi distribution.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100202 |
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| Dilmahamod, Ahmad Fehmi; Penven, Pierrick; Aguiar gonzalez, B.; Reason, C. J. C.; Hermes, J. C.. |
| The South‐East Madagascar Bloom occurs in an oligotrophic region of the South‐West Indian Ocean. Phase‐locked to austral summer, this sporadic feature exhibits substantial temporal and spatial variability. Several studies, with different hypotheses, have focused on the initiation mechanism triggering the bloom but none has been as yet clearly substantiated. With 19‐years of ocean colour dataset available as well as in‐situ measurements (Argo profiles), the time is ripe to review this feature. The bloom is characterized in a novel manner and a new bloom index is suggested, yielding 11 bloom years, including 3 major bloom years (1999, 2006 and 2008). Spatially, the bloom varies from a mean structure (22° S‐32° S; 50° E‐∼70°E) both zonally and meridionally. A... |
| Tipo: Text |
Palavras-chave: South-East Madagascar Bloom; South-East Madagascar Current; La Nina; Cyanobacterial bloom. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00482/59338/62118.pdf |
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| Scherrer,Marcus V.; Aguiar,Alexandre P.. |
| ABSTRACT Mantises can live for many months, are naturally voracious, and feed invariably on live prey. Many species have a propensity for cannibalism and cannot be kept together for most of their life cycle, which makes large-scale rearing typically time-consuming, thus easily becoming prohibitive. This is particularly true for early instars, because they are the most abundant stage of a developmental cohort. Such limitation hinders research on Mantodea which depend on live individuals, such as behavior, physiology, ontogeny, and others. In this work, a simple, low-maintenance “self-service” device is described, which is greatly effective in reducing the time needed for keeping live, individual, small to medium-sized mantises. Trial and error usage and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mantodea; Praying mantis; Rearing; Captive breeding; Cannibalism. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000400316 |
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| Silveira,Fernanda Schmidt; Vargas,Wanderleia de; Fortuna-Perez,Ana Paula; Miotto,Silvia Teresinha Sfoggia. |
| ABSTRACT Mimosa baptistae is a new species presenting stalked glandular trichomes that give it a glutinous appearance, mainly with respect to the leaflets. Furthermore, it is an aculeate species, with multijugate leaves, white stamens, and fruits also covered by glandular trichomes. A herbaria survey and fieldwork only recorded this species as occurring on sandstone outcrops of the city Caçapava do Sul, Brazil. The species may be confused with other species of Mimosa sect. Batocaulon ser. Stipellares such as M. bifurca, M. sobralii and M. lepidota. However, features such as absence/presence of aculei, stamens color, habitat, and flower features are useful for distinguishing them from the new species. Here, we provide notes on morphology, geographic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glands; Leaflets; Pampa; Secretory structures; Serra do Sudeste. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400716 |
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| Ma,Zhihui; Wang,Yuquan; Wei,Wenhui; Ru,Zhengang. |
| ABSTRACT: In this study, a non-destructive, high-throughput, endosperm-based DNA extraction method was developed. To verify the non-destructive nature of this method, a germination test was performed on 288 seeds after sampling their endosperm, which gave a seedling emergence rate that was higher (97.6%) than that of the control group (92%). To confirm the feasibility of the new method, DNA was extracted from plants of a BC1F2 population by two different methods, namely, from endosperm using our rapid, high-throughput method (ER-DNA) and from young leaves emerging from the same sampled seed using the CTAB method (LC-DNA). The ER-DNA was undetectable by agarose gel electrophoresis, but was found to be an adequate replacement for LC-DNA for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wheat; Triticum aestivum; SSR; Segregation population. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000900200 |
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| Ávila-Pires,Teresa C. S.; Nogueira,Cristiano de C.; Martins,Marcio. |
| ABSTRACT A new species of the lizard genus Stenocercus Duméril & Bibron, 1837 is described based on six specimens from Serra da Canastra, Minas Gerais, southeastern Brazil. Similar to S. tricristatus (Duméril, 1851), S. dumerilii (Steindachner, 1867), S. quinarius Nogueira & Rodrigues, 2006, and S. squarrosus Nogueira & Rodrigues, 2006, the new species has a pyramidal head and an enlarged, dorsally projected post-supraciliary scale, like a small horn. It is most similar to S. tricristatus, from which it differs in having a more elongated head in ventral view; a larger number of scales around midbody; a distinctly enlarged, smooth preauricular scale; and probably a larger body size. Moreover, the new species has distinctly keeled scales, with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Minas Gerais; New species; Serra da Canastra; Squamata; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100304 |
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| Li, Huimin; Chapron, Bertrand; Mouche, Alexis; Stopa, Justin. |
| Space‐borne synthetic aperture radar (SAR) measurements have already been proven to be invaluable in detecting and quantifying properties of ocean swell systems. With the improved spatial resolution, Sentinel‐1 wave mode measurements can further be extended towards shorter scale waves, i.e. within the surface wave equilibrium range. In this study, a new parameter is derived from filtering SAR image cross‐spectra around range‐traveling intermediate wind waves (wavelengths 15‐20 m). This parameter captures both the radar cross section variability and its time evolution. Given the dependence of intermediate waves on local wind field, this parameter is statistically documented to confirm its sensitivity to both wind speed and wind direction. Comparable to... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00482/59394/62160.pdf |
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| Ramos,Kelli dos Santos; Siriani-Oliveira,Samuel; Schlindwein,Clemens. |
| ABSTRACT The genus RhophitulusDucke, 1907 is a large and complex group of bees of the tribe Protandrenini comprising small, slender, mostly black ground-nesting species that are restricted to South America. We describe a new species of Rhophitulus from Parque Nacional São Joaquim, Urubici, state of Santa Catarina, Brazil. Rophitulus ater sp. nov. is distinctive and easily distinguished from other species of the genus by a unique combination of morphological characters in both sexes, but especially by the following: dull black body, coarsely and densely punctate integument, basal area of metapostnotum depressed and areolate rugose, posterior margin of hind tibia and pygidial fimbria of female with blackish pilosity, and characters of the male genitalia with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blumenbachia; Loasaceae; Protandrenini; South America; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000400349 |
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| CARNEIRO,LEONARDO M.. |
| Abstract The Protodidelphidae was a group of marsupials that lived in Gondwana from the early to middle Eocene. Among South American faunas, the Itaboraí Basin calls attention by the presence of four genera and six species. Herein is described Bergqvistherium primigenia gen. et sp. nov., a new protodidelphid from the Itaboraí Basin - lower Eocene. This taxon differs from other protodidelphids in the smaller size, developed entocristid, less brachyo-bunoid adaptations, and entoconid more mesial than the hypoconid. These characters are recovered as plesiomorphies of the Protodidelphidae, supporting Bergqvistherium as an early-divergent lineage of this group. The Protodidelphidae fauna of the Itaboraí Basin is represented by less specialized “basal” taxa,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metatheria; Paleogene; Systematics; Teeth. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400507 |
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| Hermidas, Navid; Silva Jacinto, Ricardo; Eggenhuisen, Joris T.; Luthi, Stefan M.. |
| A new viscoelastic constitutive model for subaqueous clay-rich gravity flows is presented. It is explained that for the materials which exhibit a minimum in their strain controlled flow curves the structure parameter must be a symmetric function of strain rate and stress. Therefore, the destruction of structure within the material is modeled using the dissipation energy. An expression for the elastic strain of the flowing structure is derived. The final set of equations can reproduce the viscosity bifurcation that clay suspensions may exhibit under a given load. This is explained to be important for prediction of the run-out distance of clay-rich gravity flows. The ability of the model to reproduce the general response of pasty materials to step stress and... |
| Tipo: Text |
Palavras-chave: Gravity flow; Thixotropy; Clay suspension; Viscosity bifurcation. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00483/59497/62365.pdf |
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| ZHANG,JIALIANG; WANG,XIAOLIN; WANG,QIANG; JIANG,SHUNXING; CHENG,XIN; LI,NING; QIU,RUI. |
| ABSTRACT A new saurolophine hadrosaurid, Laiyangosaurus youngi gen. et sp. nov. is described and phylogenetically analyzed based on several cranial elements from the Jingangkou Formation, Wangshi Group, Upper Cretaceous of Laiyang, Shandong, China. Laiyangosaurus youngi differs from other members of the saurolophine clade on the basis of a number of autapomorphies, including a prominent and narrow ridge on the lateral side of the nasal which forms the posterodorsal and posterior margin of the circumnasal depression, a primary ridge that runs along most of the maxillary tooth row that is slightly deflected posteriorly, a retroarticular process of the surangular that is dorsolateroposteriorlly recurved, and orbital margins that are wider than the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Upper Cretaceous; Wangshi Group; Laiyangosaurus youngi; Saurolophinae; Shandong; China. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400503 |
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| Cepeda, Diego; Pardos, Fernando; Sánchez, Nuria. |
| A new species of Dracoderes, D. spyro sp. nov., is described from Hispaniola Island (Caribbean Sea), and represents the first record of this genus in American waters. The new species is distinguished from its congeners by the presence of lateroventral spines on segments 3–4 and 6–9, lateral accessory spines on segment 5, lateroventral tubes on segments 2, 5 and 10, and laterodorsal tubes on segment 8. Additionally, a dichotomous key to the species level for the genus Dracoderes is included. |
| Tipo: Text |
Palavras-chave: Kinorhynchs; Taxonomy; Morphology; Caribbean Sea; Dominican; Republic; Haiti. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00501/61244/64822.pdf |
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| KITAURA,MARCOS J.; KOCH,NATÁLIA M.; LUCHETA,FABIANE; KÄFFER,MÁRCIA I.; SCHMITT,JAIRO L.; PEDROSO,JULIANA; MARTINS,SUZANA A.; RODRIGUES,ANDRESSA S.; CANÊZ,LUCIANA S.. |
| Abstract Abstract: Specimens of Leptogium collected in ten localities from the State of Rio Grande do Sul were studied. Sixteen species were found of 28 records mentioned to the state, which represents around 57% of the Leptogium diversity known for Rio Grande do Sul. Leptogium exaratum is proposed as a new species. Leptogium atlanticum, L. milligranum and L. vesiculosum are reported for the first time to the state. The lectotype of L. javanicum is reported here and detailed descriptions are provided to the examined specimens. An identification key is showed with all the 28 mentioned species of Leptogium. It is the first published taxonomic key for Leptogium from Rio Grande do Sul, the State with the highest diversity of this genus in Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Checklist; Diversity; HAS herbarium; HURG herbarium; Inflated apothecia. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100607 |
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| Dias,Amanda M.; Lattke,John E.. |
| ABSTRACT We report new records of Gnamptogenys caelata Kempf (1967) and Gnamptogenys minuta (Emery, 1896) from Brazil. We also describe Gnamptogenys piei n. sp. from Southeast Brazil. This distinctive new species is known only from a single worker found in leaf litter from montane forests of the Mantiqueira mountains in Itatiaia National Park, Rio de Janeiro State, Brazil. The specimen was collected at 1991 m above sea level, an infrequent altitude for minuta-group ants, usually more common at lower altitudes. The new species is imaged, compared with other minuta-group species, and an updated identification key for all known species of the minuta-group is included. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution; Ants; Atlantic forest; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000100030 |
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| Registros recuperados: 7.979 | |
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