Zooplankton
Mostrando 13-24 de 173 artigos, teses e dissertações.
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13. First record of Oithona attenuata Farran, 1913 (Crustacea: Copepoda) from Brazil
Abstract Here, we report the first record of the marine copepod Oithona attenuata Farran, 1913, in Brazil, from a costal station near Cabo Frio Island, Arraial do Cabo Municipality, Rio de Janeiro State. Specimens were found during March and May 2011 in zooplankton samples obtained from horizontal hauls using a plankton-net with a 100μm mesh size, and mouth
Nauplius. Publicado em: 28/03/2019
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14. Structure and ecological aspects of zooplankton (Testate amoebae, Rotifera, Cladocera and Copepoda) in highland streams in southern Brazil
Resumo Objetivo: Este estudo teve como objetivo caracterizar a estrutura do zooplâncton em rios de montanha no sul do Brasil, sub-bacia do rio Pelotas, bem como, as respectivas relações com as condições ambientais nas diferentes estações do ano. Métodos O zooplâncton foi coletado usando uma rede de plâncton (malha de 68 μm) e concentrado em um
Acta Limnol. Bras.. Publicado em: 18/02/2019
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15. Limnology of shallow lakes of the semi-arid Central Pampa of Argentina
Resumo Objetivo No Pampa Central da Argentina, há três regiões fitogeográficas criadas pela diminuição da precipitação vinda do oeste. Essa região possui um grande número de lagos sendo a maioria desses temporários com hidroperíodos definidos por ciclos climáticos, embora alterados pela ação antrópica. Alguns desses lagos foram estudados co
Acta Limnol. Bras.. Publicado em: 18/02/2019
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16. Large-Scale Spatial and Temporal Variability of Larval Fish Assemblages in the Tropical Atlantic Ocean
Abstract This study investigated the large-scale spatial and temporal variability of larval fish assemblages in the west tropical Atlantic Ocean. The sampling was performed during four expeditions. Identification resulted in 100 taxa (64 families, 19 orders and 17 suborders). During the four periods, 80% of the total larvae taken represented eight characteri
An. Acad. Bras. Ciênc.. Publicado em: 14/02/2019
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17. Zooplankton community attributes in an oligo-mesotrophic reservoir: A comparative study of two sampling strategies
Abstract Studies of the limnetic zooplankton in Brazilian freshwater have been done using several sampling strategies which are frequently associated to personal preferences, system constraints and objectives of the studies. It is known that a better sampling technique exists for each group of investigated zooplankton. So, the challenge is to provide a good
An. Acad. Bras. Ciênc.. Publicado em: 17/12/2018
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18. Description of the postembryonic stages of Boeckella poopoensis (Crustacea, Copepoda, Centropagidae)
ABSTRACT Boeckella poopoensis Marsh, 1906 is one of the most common copepods in the saline lakes of South America, where generally is the species that greater contributes to the zooplankton community biomass. Despite of its wide geographic distribution and ecological importance, the characteristics of the postembryonic stages are unknown, which prevents a de
Iheringia, Sér. Zool.. Publicado em: 11/06/2018
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19. Influence of temperature and conductivity on the life-history characteristics of a pampean strain of Brachionus plicatilis
ABSTRACT In the present work, we provide the first approach about the life-history of Brachionus plicatilis in South America. We tested with laboratory experiments the response of the pampean strain of B. plicatilis for two of its main stressors (conductivity and temperature). We evaluated the effects of eight conductivity values from 1 to 17 mS.cm-1 and two
An. Acad. Bras. Ciênc.. Publicado em: 14/05/2018
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20. New records of Cladocera (Crustacea: Branchiopoda) from the Tomo River, Vichada, Colombia
Abstract Five species of cladocerans are reported from the Tomo River, Vichada, Colombia. Zooplankton samples were collected from the littoral zone with vegetation (Campsiandra comosa Benth). Three of them, namely Streblocerus pygmaeus Sars, 1901, Disparalona cf. hamata (Birge, 1879) and Alona isabellae Sousa, Elmoor-Loureiro and Santos, 2016 are new to the
Nauplius. Publicado em: 15/03/2018
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21. Morphology of stomatopod larvae from National Parks: Sistema Arrecifal Veracruzano and Arrecife Puerto Morelos, Mexico
ABSTRACT The present study provides information on the morphology of stomatopod larvae found in two different reef systems which are also considered national parks: the Sistema Arrecifal Veracruzano (SAVNP) and Arrecife Puerto Morelos (APMNP). Zooplankton samples were collected at 26 stations of the SAVNP and four stations of the APMNP. Stomatopod larvae wer
Nauplius. Publicado em: 15/03/2018
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22. Assessing the spatial variation of functional diversity estimates based on dendrograms in phytoplankton communities
ABSTRACT Variation in phytoplankton functional diversity is partioned and mapped using several indices and linkage methods based on dendrograms. The relationships between diversity metrics and major environmental predictors, including zooplankton density, were assessed in 29 phytoplankton communities of floodplain lakes distributed along the Middle Araguaia
Acta Bot. Bras.. Publicado em: 21/09/2017
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23. Tendências nos estudos de microcrustáceos de água doce no Brasil entre 1990 e 2014
Resumo Esse estudo apresenta uma revisão cienciométrica para trabalhos com microcrustáceos de água doce (Copepoda, Ostracoda, Branchiopoda: Cladocera, Anostraca Notostraca e Conchostraca) no Brasil entre 1990-2014. Essa revisão foi baseada em 179 artigos científicos encontrados em quatro bases de dados, usando as seguintes palavras-chave: Microcrustác
Braz. J. Biol.. Publicado em: 01/12/2016
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24. Evaluation of antibiotics as a methodological procedure to inhibit free-living and biofilm bacteria in marine zooplankton culture
Existe um problema em se manter meios de cultivos completa ou parcialmente livres de bactérias. O uso de inibidores metabólicos de procariontes, tais como antibióticos, é sugerido como uma solução alternativa, no entanto tais substâncias não podem prejudicar os organismos não alvo. Assim, o objetivo deste estudo foi avaliar a eficácia de tratamento
An. Acad. Bras. Ciênc.. Publicado em: 10/05/2016