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Abundance, breeding and food of the Little Blue Heron Egretta caerulea (Aves, Ardeidae) in the Patos Lagoon estuary, a recently colonized area in southern Brazil Iheringia, Sér. Zool.
Gianuca,Dimas; Gianuca,Andros T.; Vooren,Carolus M..
We document the expansion of the breeding distribution of the Little Blue Heron Egretta caerulea (Linnaeus, 1758) to 850 km beyond its previous southern limit in South America. In addition we present data on abundance, breeding biology and food of the species in the Patos Lagoon estuary, the area which the species recently colonized. The maximum abundance recorded in the breeding colony and in a nocturnal roosting site was 53 and 49 individuals respectively. Nesting occurred from September to March. Birds nested in a mixed breeding colony together with about 3,000 breeding pairs of seven other species of Pelecaniformes, in a swampy forest near the margin of the estuary. Five nests were between 1.5 and 4.3 m from the ground, on the shrub Daphnopsis racemosa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Herons; Reproduction; Rio Grande do Sul; Range expansion.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100003
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Het Dryopteris affinis-complex in Nederland Naturalis
Hovenkamp, P.; Hendrikx, B.; Roskam, H.; Winter, W. de.
With the help of flow-cytometric analysis of nuclear DNA content and morphology, we establish the presence in the Netherlands of two taxa of the Dryopteris affinis complex: diploid D. affinis subsp. affinis, triploid D. affinis subsp. borreri, and the hybrids D × complexa (tetraploid) and D. × critica (pentaploid). Onderzoek aan kern-DNA gewicht en morfologie van recente vondsten van het Dryopteris affinis-complex wijst uit dat in Nederland twee taxa en twee hybrides met redelijke zekerheid zijn gevonden: dediploïde D. affinis subsp. affinis, de triploïde D. affinis subsp. borreri, en de hybriden D × complexa (tetraploïd) en D. × critica (pentaploïd). We analyseren een aantal onderscheidende kenmerken en maken de keuze om deze taxa te behandelen als...
Tipo: Article / Letter to the editor Palavras-chave: Dryopteris affinis; Soortscomplex; Species complex; Uitbreiding; Range expansion; Genoomgrootte; Genome size; Cytotypes; Polyploidie; Polyploidy; Morfometrie; Morphometrics.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/669050
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New and significant bird records from Rio Grande do Sul, with comments on biogeography and conservation of the southern Brazilian avifauna Iheringia, Sér. Zool.
Bencke,Glayson A..
I report on the occurrence of 16 species of birds in Rio Grande do Sul, southern Brazil, of which seven are new for the state - Accipiter superciliosus (Linnaeus, 1766), Brotogeris tirica (Gmelin, 1788), Hemitriccus margaritaceiventer (d'Orbigny & Lafresnaye, 1837), Phyllomyias griseocapilla Sclater, 1862, Saltator coerulescens Vieillot, 1817, Orthogonys chloricterus (Vieillot, 1819), and Sporophila lineola (Linnaeus, 1758) - and seven were previously known from unsubstantiated or poorly documented records - Ixobrychus exilis (Gmelin, 1789), Brotogeris chiriri (Vieillot, 1818), Coccyzus euleri Cabanis, 1873, Pulsatrix koeniswaldiana (Bertoni & Bertoni, 1901), Psilorhamphus guttatus (Ménétriès, 1835), Serpophaga griseicapilla Straneck, 2007,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: New occurrences; Distribution; Atlantic forest; Range expansion.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000400014
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New records of Helicina schereri (Gastropoda: Helicinidae) from the states of Bahia, Minas Gerais, and Mato Grosso do Sul, Brazil Pap. Avulsos de Zool. (São Paulo)
Silva,Fernanda dos Santos; Cavallari,Daniel Caracanhas; Simone,Luiz Ricardo Lopes de.
Abstract New records for Helicina schereri Baker, 1913, are reported. It was a species previously restricted to the states of Ceará, Rio Grande do Norte, Paraíba, Alagoas and Tocantins in Northeastern Brazil, and State of Santa Catarina, much further south. The new occurrences reported herein fill distribution gaps and also significantly expand the range of the species ca. 970 km westwards. The new records are from the following locations: Bahia State (Ituaçu and Itaquara municipalities) in Northeast Brazil; Mato Grosso do Sul State (Bonito Municipality) in the Midwest; and Minas Gerais (Lagoa Santa municipality) in the Southeast.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Land snails; Neritimopha; Range expansion; South America.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100203
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Ocean current connectivity propelling the secondary spread of a marine invasive comb jelly across western Eurasia ArchiMer
Jaspers, Cornelia; Huwer, Bastian; Antajan, Elvire; Hosia, Aino; Hinrichsen, Hans-harald; Biastoch, Arne; Angel, Dror; Asmus, Ragnhild; Augustin, Christina; Bagheri, Siamak; Beggs, Steven E.; Balsby, Thorsten J. S.; Boersma, Maarten; Bonnet, Delphine; Christensen, Jens T.; Daenhardt, Andreas; Delpy, Floriane; Falkenhaug, Tone; Finenko, Galina; Fleming, Nicholas E. C.; Fuentes, Veronica; Galil, Bella; Gittenberger, Arjan; Griffin, Donal C.; Haslob, Holger; Javidpour, Jamileh; Kamburska, Lyudmila; Kube, Sandra; Langenberg, Victor T.; Lehtiniemi, Maiju; Lombard, Fabien; Malzahn, Arne; Marambio, Macarena; Mihneva, Veselina; Moller, Lene Friis; Niermann, Ulrich; Okyar, Melek Isinibilir; Ozdemir, Zekiye Birinci; Pitois, Sophie; Reusch, Thorsten B. H.; Robbens, Johan; Stefanova, Kremena; Thibault, Delphine; Van Der Veer, Henk W.; Vansteenbrugge, Lies; Van Walraven, Lodewijk; Wozniczka, Adam.
Aim Invasive species are of increasing global concern. Nevertheless, the mechanisms driving further distribution after the initial establishment of non‐native species remain largely unresolved, especially in marine systems. Ocean currents can be a major driver governing range occupancy, but this has not been accounted for in most invasion ecology studies so far. We investigate how well initial establishment areas are interconnected to later occupancy regions to test for the potential role of ocean currents driving secondary spread dynamics in order to infer invasion corridors and the source–sink dynamics of a non‐native holoplanktonic biological probe species on a continental scale. Location Western Eurasia. Time period 1980s–2016. Major taxa studied ‘Comb...
Tipo: Text Palavras-chave: Biological invasions; Gelatinous zooplankton; Invasion corridors; Invasive species; Jellyfish; Marine connectivity; Mnemiopsis leidyi; Range expansion; Source populations; Source-sink dynamics.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55133/56595.pdf
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Origin and route of establishment of the invasive Pacific oyster Crassostrea gigas in Scandinavia ArchiMer
Faust, Ellika; Andre, Carl; Meurling, Sara; Kochmann, Judith; Christiansen, Henrik; Jensen, Lasse Fast; Charrier, Gregory; Laugen, Ane T.; Strand, Asa.
Identifying the routes and rates of introductions is fundamental for the understanding of marine invasions. Recurring introductions over the last 50 yr have led to the establishment of feral Pacific oyster Crassostrea gigas populations throughout Europe. In the northern countries, Sweden and Norway, the species first occurred in large numbers in 2006. Here, we investigated the relative importance of introduction via re-laying of cultured oysters imported for consumption from France, Ireland or the Netherlands, and dispersal of oyster larvae by ocean currents from wild oyster populations in Denmark. Using microsatellite DNA markers, we estimated genetic differentiation among Pacific oysters collected at 4 Swedish locations, 3 Norwegian locations and 9...
Tipo: Text Palavras-chave: Population genetics; Microsatellites; Range expansion; Non-native species; Aquaculture; Connectivity; Scandinavia; Skagerrak.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00395/50627/72574.pdf
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Patterns of avian malaria in tropical and temperate environments: testing the "The enemy release hypothesis" Biota Neotropica
Antonini,Yasmine; Lobato,Debora Nogueira Campos; Norte,Ana Cláudia; Ramos,Jaime A.; Moreira,Patrícia de Abreu; Braga,Erika Martins.
Abstract: According to the enemy release hypothesis (ERH) the spread of invasive species will be facilitated by release from their enemies as they occupy new areas. However, the ERH has rarely been tested by comparing populations of native (non-invasive, long established) species with expanding or shifting ranges, to the same species as invasive in another area. We tested the ERH with respect to blood parasite levels (prevalence and intensity of Plasmodium spp. and Haemoproteus spp.) of (a) two closely related, widely distributed species of thrush (Turdus leucomelas and T. merula), and (b) an invasive sparrow (Passer domesticus) whose range has expanded from the Old World to the New World since the 18th century. A total of 158 birds were sampled in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Portugal; Brazil; Turdus; House sparrow; Invasive bird; Range expansion.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000400204
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Records of the rattlesnakes Crotalus durissus terrificus (Laurenti) (Serpentes, Viperidae) in the State of Rio de Janeiro, Brazil: a possible case of invasion facilitated by deforestation Zoologia
Bastos,Eduardo G. de M.; Araújo,Alexandre F. B. de; Silva,Hélio R. da.
This paper documents the presence of rattlesnakes, as an invasive species, in several municipalities of the State of Rio de Janeiro. As previous registers indicate, these snakes probably invaded at least the municipality of Valença carried by floodwaters between the decades of 1950 and 1960. In the new environment, along the margins of the Rio Preto, these snakes were able to establish new populations in deforested areas turned into cattle grazing. The presence of rattlesnake in the municipality of Barra do Piraí, a municipality that has no border with Rio Preto, however, indicates that these snakes dispersal into new areas may be facilitated by open areas, represented by pastures, created after deforestations.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Habitat disturbance; Range expansion; Rattlesnake; Snake.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300047
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The presence of Melinna palmata (Annelida : Polychaeta) and Ensis directus (Mollusca : Bivalvia) related to sedimentary changes in the Bay of Seine (English Channel, France) ArchiMer
Dauvin, J; Ruellet, T; Thiebaut, E; Gentil, F; Desroy, Nicolas; Janson, A; Duhamel, S; Jourde, J; Simon, S.
Since late 1990s the annelid polychaete Melinna palmata and the mollusc bivalve Ensis directus have been collected in the eastern part of the Bay of Seine (English Channel), indicating changes in the benthic communities. Melinna palmata was never collected prior to 2002, whereas it was reported in the muddy fine sands of the western part of the Channel, along the French (e.g. Bay of Cherbourg) and southern UK (e.g. Southampton Waters) coasts. Ensis directus was first reported in 1998 and now appears to be well implanted, given the abundant population collected in 2006. The colonization of Melina palmata seems to be a consequence of recent increase of the fine sediment in the eastern part of the Bay, while that of the invasive Ensis directus seems more...
Tipo: Text Palavras-chave: Invasive species; Environmental disturbances; New records; Range expansion; English Channel; Bay of Seine; Ensis directus; Melinna palmata.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3567.pdf
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Wild pejibaye (Bactris gasipaes Kunth var. chichagui) in Southeastern Amazonia Acta Botanica
Silva,João Batista F. da; Clement,Charles R..
The geographical distribution and morpho-genetic variation of wild and domesticated populations of a crop species are essential information for identifying a center of origin. The pejibaye (Bactris gasipaes Kunth) is the only domesticated neotropical palm, whose starchy-oily fruits are subsistence products and whose heart-of-palm is an expanding agribusiness. The origin of pejibaye is unresolved, but probably will be found in the distribution of type 1 B. gasipaes var. chichagui in southwestern Amazonia. A new area of occurrence of this type is reported around São Felix do Xingu, Pará, Brazil, 52°41' W 6°34' S, about 600 km northeast of the eastern-most known population, in central Mato Grosso, Brazil. The plants of this population are slightly less robust...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Range expansion; Fruit and seed morphometrics; Crop origin; Economic botany.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000200010
Registros recuperados: 10
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