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| Registros recuperados: 164 | |
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| Guedes,Camila Fediuk de Castro; Almeida,Lúcia Massutti de. |
| Harmonia axyridis was detected for the first time in Brazil in 2002. Since then, it has been recorded from the South to the Midwest of the country. Until now, almost all the registered cases were associated with the presence of aphids, its preferred source of food. Due to the occurrence of this species in areas of fruit growing in the South and Southeast of Brazil, the aim of this study was to analyze the preference and use of three different cultivars of fruit. The tests were set at 25ºC ± 1ºC, RH 70% ± 10%, and in a photophase of 12 h and with apples (Gala and Fuji), grapes (Niágara and Rubi), and pears (Williams and Asian). In the undamaged fruit experiment, the insects did not cause any noticeable damage. In the damaged and undamaged fruit experiment,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apple; Food preference; Grape; Invasive species; Pear. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000400013 |
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| Zhu,Dongmei; Yang,Kun; Sun,Ning; Wang,Weimin; Zhou,Xiaoyun. |
| ABSTRACT The topmouth gudgeon, Pseudorasbora parva (Temminck & Schlegel, 1842), is a small cyprinid fish that inhabits the littoral zones of freshwater habitats throughout Asia and Europe. It is regarded as an invasive species in Europe, but in its native range, in China, as food and as an environmental bio-indicator. In this study, the embryonic and larval development of P. parva was investigated for the first time. The eggs of P. parva are transparent, adhesive and elliptical. The mean size of fertilized eggs was (1.63×1.31) ± 0.04 mm. From fertilization to hatching, embryonic development could be divided into eight stages and 34 phases, and the incubation period lasted for 109.25 hours at 24 ± 1 °C. Newly hatched larvae were 4.1 ± 3 mm in length,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Embryogenesis; Invasive species; Larval development. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100332 |
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| Almeida,Ana C.S.; Souza,Facelucia B.C.; Gordon,Dennis P.; Vieira,Leandro M.. |
| ABSTRACT Bryozoans constitute an important component of marine-fouling communities of anthropogenic substrata. Many species have been reported as exotic or widespread around the world, typically in ports and harbors of non-polar regions. Here we present the first record of a species of the bryozoan Triphyllozoon in the Atlantic Ocean. Triphyllozoon arcuatum (MacGillivray, 1889), described originally from Australia, is reported herein from natural substrata in Singapore and natural and artificial substrata in Brazil. Although easily recognizable, the species has not been previously reported from anywhere else in the Atlantic. In the latter instance, the species was collected during monitoring of the invasive scleractinian corals Tubastraea spp. on an oil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioinvasion; Brazil; Bryozoa; Invasive species; Oil platform. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600476 |
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| López-Caamal,Alfredo; Tovar-Sánchez,Efraín. |
| Natural hybridization is a frequent phenomenon among vascular plants. Hybridization is considered an important evolutionary force since it may lead to (1) an increase of the intraspecific genetic diversity of the participating populations, (2) the creation of new species, (3) species extinction through genetic assimilation, and (4) the generation of highly invasive genotypes. Because of the importance of plant hybridization in evolution, it is of great importance to accurately identify hybrid individuals. In this review, we give a general historical background of the study of plant hybridization. Also, we review some of the tools employed for hybrid recognition and their pattern of expression in hybrid individuals (morphological, chemical, chromosome... |
| Tipo: Journal article |
Palavras-chave: Chromosome number; DNA fingerprinting; Hybrid performance; Hybrid phenotype; Invasive species; Secondary metabolites. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100015 |
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| YARROW,MATTHEW; MARÍN,VÍCTOR H; FINLAYSON,MAX; TIRONI,ANTONIO; DELGADO,LUISA E; FISCHER,FERNANDA. |
| Egeria densa Planchón is considered an invasive species in continental aquatic systems in Chile. Its original geographical distribution was limited to the subtropical regions of Brazil, Argentina and Uruguay. Its fast growth and dense canopy-forming habit are associated with the clear water state of shallow water continental ecosystems. As a dominant species in many of the systems in which it occurs, E. densa behaves as an ecosystem engineer by preventing the re-suspension of sediments and controlling the growth of phytoplankton by removing nutrients from the water column. At the same time, this invasive species produces unwanted effects such as: (1) clogging waterways and hydroelectric turbines, (2) out-competing native vegetation, and (3) negatively... |
| Tipo: Journal article |
Palavras-chave: Egeria densa; Ecosystem engineer; Invasive species. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000200010 |
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| Silva,Luiza Nicoleite da; Medeiros,Caroline Modena de; Cavalcante,Kaoli Pereira; Cardoso,Luciana de Souza. |
| ABSTRACT Ceratium furcoides has received attention due its invasive behavior in South America and consequent alterations in local phytoplankton communities. Pedalinhos Lake had been dominated by chlorophytes until 2015, when the first occurrence of this dinoflagellate was detected. In order to investigate the colonization process of this species, we monitored the meteorological variables and phytoplankton abundance of this urban lake on a weekly basis from September 2015 to September 2018. At the beginning of the invasion process (Year 1), a peak density of 10,170 ind.mL-1 was recorded, with a significant decrease to 23 ind.mL-1, indicating an initial, unstable process of adaptation, with notable oscillation and reduction of cyanobacterial blooms. At this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dinoflagellate; Invasive species; Shallow lake; Subtropical; Southern Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400654 |
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| Maruyama,Pietro K.; Nunes,Carlos E. P.; Vizentin-Bugoni,Jeferson; Gustafsson,Simone; Morellato,Leonor Patricia Cerdeira. |
| ABSTRACT Most angiosperms rely on animals for pollination, and insects, especially bees, are being the most frequent pollinators. Many native Neotropical plants are frequently visited by the invasive honeybee (Apis mellifera), but its role in the pollination of these plants has been little investigated. We assessed the contribution of various floral visitors, including native bees and the honeybee, on the pollination of a generalist rupestrian grassland daisy, Aspilia jolyana (Asteraceae), in Serra do Cipó, Espinhaço Mountain Range, Brazil. We recorded floral visitors and measured the seed set resulting from one single visitation. We observed a total of 442 visits, mostly by bees, with Bombus pauloensis and Apis mellifera being the most common floral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bee pollination; Bombus pauloensis; Generalization; Honeybee; Invasive species; Pollination efficacy; Serra do Cipó. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300386 |
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| Kalesnik, Fabio; UBA/Argentina; Aceñolaza, Pablo; UBA/Argentina. |
| The distribution and abundance of exotic and native species in levee neo-ecosystems were analyzed. No invasive species were found in unit A; their absence could be explained by the fluvial action of the Paraná river, extraordinary flood episodes and anthropic disturbances. Invasive species associated with the tidal regimen of the de la Plata river were present in units B and C, particularly Chinese privet (L. sinense), green ash (F. pennsylvanica), honey locust (G. triacanthos), Japanese honeysuckle (L. Japonica), blackberry ( Rubus spp.), box elder (A. Negundo ) and glossy privet (L. Lucidum).Native species showed low recovery values, both at a regional level and within each unit, with the exception of A. The neo-ecosystems with the greater degree of... |
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Palavras-chave: Wetlands; Lower delta; Neo-ecosystems; Invasive species; “Monte Blanco” species. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5869 |
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| Kipper, Darlon; Universidade Estadual de Maringá; Taguti, Tatia Leika; Universidade Estadual de Maringá; Bialetzki, Andréa; Universidade Estadual de Maringá; Makrakis, Maristela Cavicchioli; Universidade Estadual do Oeste do Paraná; Baumgartner, Gilmar; Universidade Estadual do Oeste do Paraná; Sanches, Paulo Vanderlei; Universidade Estadual do Oeste do Paraná. |
| This study aimed to describe the early development of Clarias gariepinus, a species that has been introduced into various watersheds worldwide, in order to help the identification of its eggs, larvae and juveniles in natural environments. The material used was obtained via induced spawning during 1999. After spawning, the periodicity of sampling varied according to ontogenic development. We analyzed 12 eggs, 146 larvae and 6 juveniles. Newly fertilized eggs are spherical, with a double membrane, the density of which varies. Initially the larvae have little pigmentation but this intensifies during development. They have four pairs of well-developed barbels, an elongated body, long dorsal and anal fins, no adipose fin and vesicles surrounding the finfold and... |
| Tipo: Desenvolvimento ontogênico |
Palavras-chave: 2.05.00.00-9 african catfish; Invasive species; Larvae; Juvenile of fish Ecologia. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/12471 |
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| Registros recuperados: 164 | |
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