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| Registros recuperados: 4.953 | |
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| Imzilen, Taha; Lett, Christophe; Chassot, Emmanuel; Kaplan, David. |
| Debris from fisheries pose significant threats to coastal marine ecosystems worldwide. Tropical tuna purse seine fisheries contribute to this problem via the construction and deployment of thousands of human-made drifting fish aggregating devices (dFADs) annually, many of which end up beaching in coastal areas. Here, we analyzed approximately 40,000 dFAD trajectories in the Indian Ocean and 12,000 dFAD trajectories in the Atlantic Ocean deployed over the decade 2008–2017 to identify where and when beachings occur. We find that there is tremendous promise for reducing beaching events by prohibiting deployments in areas most likely to lead to a beaching. For example, our results indicate that 21% to 40% (depending on effort redistribution after closure) of... |
| Tipo: Text |
Palavras-chave: Marine pollution; Fishing debris; Coral reefs; Fish aggregating device (FAD); Ocean currents. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00669/78060/80807.pdf |
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| Van Wambeke, France; Pulido, Elvira; Catala, Philippe; Dinasquet, Julie; Djaoudi, Kahina; Engel, Anja; Garel, Marc; Guasco, Sophie; Barbara, Marie; Nunige, Sandra; Taillandier, Vincent; Zancker, Birthe; Tamburini, Christian. |
| Ectoenzymatic activity, prokaryotic heterotrophic abundances and production were determined in the Mediterranean Sea. Sampling was carried out in the sub-surface, the deep chlorophyll maximum layer (DCM), the core of the Levantine intermediate waters and in the deeper part of the mesopelagic layers. Michaelis–Menten kinetics were assessed using a large range of concentrations of fluorogenic substrates (0.025 to 50 µM). As a consequence, Km (Michaelis–Menten half-saturation constant) and Vm (maximum hydrolysis velocity) parameters were determined for both low- and high-affinity enzymes for alkaline phosphatase, aminopeptidase (LAP) and β-glucosidase (βGLU). Based on the constant derived from the high-LAP-affinity enzyme (0.025–1 µM substrate concentration... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00642/75452/76268.pdf |
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| CLAUDINO, V. C. M.; SPECHT, A.; FIDELIS, E. G.; ROQUE-SPECHT, V. F.; MONTEZANO, D. G.; MARTINS, P. R.; SILVA, F. A. M.; MALAQUIAS, J. V.. |
| Resumo: Mocis latipes (Guenée, 1852) (Lepidoptera: Erebidae) tem sido reconhecida como uma das principais espécies consumidoras de gramíneas em todo o continente americano. Durante os surtos, as lagartas são capazes de consumir completamente os hospedeiros preferenciais (gramíneas) e, quando os hospedeiros preferenciais são destruídos, podem mover-se para plantas adjacentes não gramíneas e causar danos semelhantes. Variáveis meteorológicas, como temperatura e umidade, são conhecidas por afetar o desenvolvimento e a abundância de suas populações. Este trabalho teve como objetivo descrever e comparar a distribuição espaço-temporal de M. latipes em diferentes localidades do Brasil e avaliar a influência de variáveis meteorológicas sobre suas variações... |
| Tipo: Artigo de periódico |
Palavras-chave: Noctuoides-praga; Variação populacional; Armadilha Luminosa; Curuquerê. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133823 |
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| Firth, Louise B; Harris, Daniel; Blaze, Julie A; Marzloff, Martin; Boye, Aurelien; Miller, Peter I; Curd, Amelia; Vasquez, Mickael; Dunn, Julia D; O'Connor, Nessa E; Power, Anne-marie; Mieszkowska, Nova; O’riordan, Ruth M; Burrows, Michael T; Bricheno, Lucy M; Knights, Anthony M; Nunes, Flavia; Bordeyne, François; Bush, Laura E; Byers, James E; David, Carmen; Davies, Andrew J; Dubois, Stanislas; Edwards, Hugh; Foggo, Andy; Grant, Lisa; Mattias Green, Ja; Gribben, Paul E; Lima, Fernado P; Mcgrath, David; Noel, Laure Mlj; Seabra, Rui; Simkanin, Christina; Hawkins, Stephen J. |
| Aim To investigate some of the environmental variables underpinning the past and present distribution of an ecosystem engineer near its poleward range edge. Location >500 locations spanning >7,400 km around Ireland. Methods We collated past and present distribution records on a known climate change indicator, the reef‐forming worm Sabellaria alveolata (Linnaeus, 1767) in a biogeographic boundary region over 182 years (1836–2018). This included repeat sampling of 60 locations in the cooler 1950s and again in the warmer 2000s and 2010s. Using species distribution modelling, we identified some of the environmental drivers that likely underpin S. alveolata distribution towards the leading edge of its biogeographical range in Ireland. Results Through... |
| Tipo: Text |
Palavras-chave: Biogenic habitat; Biogeography; Cold event; Irish Sea; Macroecology; Tidal front. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00677/78938/81316.pdf |
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| MALHEIROS, E. M.; CAMARGO, W. R. F. de; CAMARGO, A. J. A. de; PALUCH, M.. |
| ABSTRACT. The diversity of hawkmoths (Lepidoptera: Sphingidae) is poorly known in the biomes of the Bahia state. However, studies were carried out in other states of the northeastern region with species inventories in the Atlantic Forest, Caatinga and Cerrado. In order to broaden the knowledge on of the richness and diversity of hawkmoths in the Atlantic Forest of the state of Bahia, six monthly sampling sessions were carried out in the State Ecological Station of Wenceslau Guimarães. Hawkmoths were captured using a 250-watt mercury-vapor light trap set against a white cloth panel, for two nights a month, between 6:00 p.m. and 6:00 a.m. A total of 266 specimens were collected, distributed across 17 genera and 41 species. The most abundant and dominant... |
| Tipo: Artigo de periódico |
Palavras-chave: Mariposa falcão; Mata Atlântica; Biodiversidade; Conservação. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1138591 |
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| SOUSA, M. do S. M. de; DEUS, E. de; LIMA, A. L.; JESUS, C. R. de; COSTA NETO, S. V. da; LEMOS, L. do N.; MALHADO, A. C. M.; LADLE, R. J.; ADAIME, R.. |
| Fruit flies are economically important pests that infest a wide variety of host trees. The environmental damage caused by traditional pesticide-based control methods has prompted scientists to seek less damaging alternatives such as biological control by native species. Parasitoids, especially Braconidae species, have excellent potential as biological control agents for fruit flies, being both generalists and well distributed geographically. Native fruit trees that support medium or high levels of these parasitoids could therefore play an important role in biological control strategies. A good potential example is Spondias mombin L. in the Brazilian Amazon, which hosts several species of fruit flies and associated parasitoids. Here, we provide a unique... |
| Tipo: Artigo de periódico |
Palavras-chave: Taperebá; Opius bellus; Praga de Planta; Fruta Tropical; Plant pests; Anastrepha obliqua; Doryctobracon areolatus. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132684 |
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| MEDEIROS, M. B. de; VALLS, J. F. M.; ABREU, A. G. de; HEIDEN, G.; RIBEIRO-SILVA, S.; JOSE, S. C. B. R.; SANTOS, I. R. I.; PASSOS, A. M. A. dos; BURLE, M. L.. |
| This study presents the status of ex situ and in situ conservation for the crop wild relatives of rice, potato, sweet potato, and finger millet in Brazil, and the subsequent germplasm collection expeditions. This research is part of a global initiative entitled ?Adapting Agriculture to Climate Change: Collecting, Protecting, and Preparing Crop Wild Relatives? supported by the Global Crop Diversity Trust. Species of the primary, secondary, and tertiary gene pools with occurrences reported in Brazil were included: Oryza alta Swallen, O. grandiglumis (Döll) Prod., O. latifolia Desv., O. glumaepatula Steud., Eleusine tristachya (Lam.) Lam., E. indica (L.) Gaertn., Solanum commersonii Dunal, S. chacoense Bitter, Ipomoea grandifolia (Dammer) O?Donell, I.... |
| Tipo: Artigo de periódico |
Palavras-chave: Conservação ex situ; Conservação in situ; Banco de genes; Germoplasma; Arroz; Batata; Batata Doce; Milheto; Genética Vegetal; Variedade. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130920 |
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| FERREIRA, J. A. B.; LEDO, C. A. da S.; SOUZA, F. V. D.; CONCEIÇÃO, J. Q.; ROSSI, M. L.; SOUZA, E. H.. |
| The objective of this study was to evaluate the stigma morphoanatomy and receptivity in ten promising papaya accessions, to expand knowledge useful for genetic improvement of the culture. The morphoanatomy was analyzed by light and scanning electron microscopy, and the stigma receptivity was investigated by application of hydrogen peroxide and α-naphthyl-acetate with fast blue B salt, in pre-anthesis, anthesis and post-anthesis. The papaya accessions presented dry stigma surface, presence of one to six erect stigmatic lobes, with structures joined to the upper base of the style and covered with numerous elongated unicellular tubular papillae, distributed on both faces of the epidermis. The morphoanatomy had a similar pattern in all the accessions,... |
| Tipo: Artigo de periódico |
Palavras-chave: Mamão. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136429 |
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| OLIVEIRA, G. R.; WANDER, A. E.. |
| Goias state has the third largest cattle stocks among the Brazilian states, with 22.8 million heads, and the second largest herd of lactating cows. These animals are kept under grazing on pastures, which occupy 41% (14 Mha) of whole Goias state? territory. This study analyses the stocking rates of the pastures of Goias, identifying their current state of degradation and production potential. Therefore, data on cattle herd, stratified by age and sex, besides the pasture mapping obtained by satellite images was used. Therefore, the results provide more accurate estimates than before on the pasture situation and, consequently, of the cattle ranching in the state, allowing greater potential for increased productivity. The stocking rates of pastures is 1.3... |
| Tipo: Artigo de periódico |
Palavras-chave: Spatial analysis; Pastagem; Cattle; Pastures; Herds; Stocker cattle. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137330 |
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| Registros recuperados: 4.953 | |
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