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| Registros recuperados: 191 | |
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| Breviglieri,Crasso Paulo B.; Esbérard,Carlos Eduardo L.. |
| ABSTRACT The bat Eumops perotis (Schinz, 1821) is broadly distributed in the Americas. Studies on its biology are still scarce and the few studies available are relatively outdated. In the present study, we describe the biology of Eumops perotis in an artificial roost in the municipality of Pindorama, State of São Paulo, southeastern Brazil, which was monitored for 12 months. We captured 50 individuals; 43 adults (34 males and 9 females) and seven juveniles (three males and four females). Nineteen adults were recaptured throughout the year (15 males and four females) during samplings. Males were ~33% heavier than females. Males remained in the roost throughout the year, while females were absent in June, July, and August. The presence of males with scrotal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reproductive biology; Biometrics; Behavior; Diet. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100233 |
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| Mello,Renata S; Queiroz,Margareth M. C; Nunes-Freitas,André F; Aguiar-Coelho,Valéria M. |
| The present study intended to analyze calliphorid attraction to traps painted in a variety of colors and the calliphorid constancy index in the Tingua Biological Reserve, Rio de Janeiro state, Brazil. The Diptera were collected monthly in the Reserve, between 2002 and 2005, totaling 24 samplings. Four traps containing sardines as bait were painted olive green, blood red, black, or white and exposed for 48 h at four equidistant points, 50 m from each other. To determine the calliphorid species constancy, the Bodenheirmer constancy index was used throughout the study. To analyze differences in the total abundance between species and in their color selection, an ANCOVA test with a significance level of 5 % and a Tukey post-test were used, considering the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative control; Behavior; Blowflies; Colored traps. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000400013 |
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| Joachim-Bravo,Iara S.; Fernandes,Odair A.; Bortoli,Sérgio A.; Zucoloto,Fernando S.. |
| The influence of two factors, age and previous experience, on the oviposition hierarchy preference of Ceratitis capitata (Wiedemann, 1824) females was studied. Two populations were analyzed: one reared in laboratory during 17 years and the other captured in nature. In the first experiment the oviposition preference for four fruits, papaya, orange, banana and apple was tested at the beginning of oviposition period and 20 days past. The results showed that the wild females as much the laboratory ones had an oviposition preference hierarchy at the beginning of peak period of oviposition. However this hierarchic preference disappeared in a later phase of life. In the second experiment the females were previously exposed to fruits of different hierarchic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Medfly; Hosts; Behavior; Oviposition; Ceratitis. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200014 |
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| Valente,Renata de Melo. |
| Fourteen bird species were observed visiting one specimen of Alchornea glandulosa Poepp., 1845, at the Horto Florestal Navarro de Andrade, Rio Claro, São Paulo State, Brazil. Among them, three species seem to be the most efficient seed dispersers of A. glandulosa at the study site: Myiodinastes maculatus (Müller, 1776), Empidonomus varius (Vieillot, 1818) e Tyrannus melancholicus Vieillot, 1819. Besides to swallow fruit whole, these birds contributed with 68.5% of the total feeding visits. A. glandulosa fruit are not the mainly part of the diet of any one of the observed bird species, since they do not fit in the frugivorous specialized category. However, as almost all the observed individuals swallow fruit whole, it is suppose that they promote an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Frugivory; Alchornea glandulosa; Birds; Behavior; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200008 |
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| Pinto,Carla da Costa; Lema,Thales de. |
| Boiruna maculata Boulenger, 1896 and Clelia rustica (Cope, 1878) were observed in captivity feeding snakes and rodents, respectively. Both species have shown a similar procedure in relation to the prey. Major behavior differences among the two species were: rodents killed before being swallowed, and snakes were mostly swallowed alive; both species are able to find the rodents head faster than the snake one; the coils formed during constriction were also used to hold the prey, specially the last coil, while swallowing rodents. Informations on stomach contents was gathered by dissection of preserved specimens of Clelia clelia (Daudin, 1803) and C. plumbea (Wied, 1820) were also included in the dietary study. The majority of preys consisted on snakes and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Boiruna; Clelia; Food; Feeding; Behavior. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000200002 |
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| Castrec, Justine; Soudant, P.; Payton, L.; Tran, D.; Miner, Philippe; Lambert, C.; Le Goic, N.; Huvet, Arnaud; Quillien, Virgile; Boullot, F.; Amzil, Zouher; Hegaret, Helene; Fabioux, C.. |
| Blooms of the dinoflagellate Alexandrium spp., known as producers of paralytic shellfish toxins (PSTs), are regularly detected on the French coastline. PSTs accumulate into harvested shellfish species, such as the Pacific oyster Crassostrea gigas, and can cause strong disorders to consumers at high doses. The impacts of Alexandrium minutum on C. gigas have often been attributed to its production of PSTs without testing separately the effects of the bioactive extracellular compounds (BECs) with allelopathic, hemolytic, cytotoxic or ichthyotoxic properties, which can also be produced by these algae. The BECs, still uncharacterized, are excreted within the environment thereby impacting not only phytoplankton, zooplankton but also marine invertebrates and... |
| Tipo: Text |
Palavras-chave: Harmful algal bloom (HAB); Crassostrea gigas; Paralytic shellfish toxins (PST); Bioactive extracellular compounds (BEC); Histology; Behavior. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00435/54637/56042.pdf |
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| Faillettaz, Robin; Johnson, Eve; Dahlmann, Patrick; Syunkova, Alexandra; Stieglitz, John; Benetti, Daniel; Grosell, Martin; Paris, Claire B.. |
| Understanding the orientation behavior and capabilities in early life history (ELH) of fishes is critical for studying their dispersal but has, surprisingly, never been tested in any pelagic species. We here investigate the ontogeny of orientation and swimming abilities of the pelagic Coryphaena hippurus Linnaeus, 1758 larvae, hereafter mahi-mahi, through their ELH stages using the Drifting In Situ Chamber (DISC) in a laboratory setup. The DISC was deployed in a large (3 m3) circular aquarium in order to control the stimulus perceived by the fish and to identify behavioral response at the individual, developmental stage, and population levels. A total of 79 individual ranging from 7 to 23 days post hatch and from preflexion to early juvenile stages were... |
| Tipo: Text |
Palavras-chave: S: early life history stages; Coryphaena hippurus; Common dolphinfish; Mahi-mahi; Behavior; Orientation; Phototaxism; Ontogeny; Directionality competence. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76610/77760.pdf |
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| Tallec, Kevin; Blard, Océane; González-fernández, Carmen; Brotons, Guillaume; Berchel, Mathieu; Soudant, Philippe; Huvet, Arnaud; Paul-pont, Ika. |
| Plastic debris are classified as a function of their size and recently a new class was proposed, the nanoplastics. Nano-sized plastics have a much greater surface area to volume ratio than larger particles, which increases their reactivity in aquatic environment, making them potentially more toxic. Only little information is available about their behavior whereas it crucially influences their toxicity. Here, we used dynamic light scattering (DLS) to explore the influence of environmental factors (fresh- and saltwater, dissolved organic matter) on the behavior (surface charge and aggregation state) of three different nano-polystyrene beads (50 nm), with (i) no surface functionalization (plain), (ii) a carboxylic or (iii) an amine functionalization. Overall,... |
| Tipo: Text |
Palavras-chave: Nanoplastic; Dynamic light scattering; Behavior; Aggregation; Salinity; Organic matter. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00485/59652/62684.pdf |
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| Faillettaz, Robin; Paris, Claire B.; Irisson, Jean-olivier. |
| Most demersal fishes undergo a dispersal phase as larvae, which strongly influences the connectivity among adult populations and, consequently, their genetic structure and replenishment opportunities. Because this phase is difficult to observe directly, it is frequently simulated through numerical models, most of which consider larvae as passive or only vertically migrating. However, in several locations, including the Mediterranean Sea, many species have been shown to swim fast and orient. Here we use a Lagrangian model to study connectivity patterns among three Mediterranean Marine Protected Areas (MPAs) and compare simulations in which virtual larvae are passive to simulations in which oriented swimming is implemented. The parameterization of behavior... |
| Tipo: Text |
Palavras-chave: Fish larvae; Behavior; Swimming; Connectivity; Dispersal; Mediterranean sea; Marine protected areas; Modeling. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00634/74618/74548.pdf |
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| Campos, L. F. A. S.; Andrade, A. B.; Bertrand, Sophie; Efe, M. A.. |
| We used miniaturized GPS loggers and site observations to access foraging patterns and nest behaviour of the White-tailed Tropicbird Phaethon lepturus (WTTB), an endangered species at its South Atlantic breeding colony. Dual foraging pattern was observed with alternation between long and short foraging trips. Birds responsible for nest attendance engaged in short foraging trips with mean distance from colony of 25 +/- 17 km, total distance covered of 79 +/- 65 km and mean duration of 4.02 +/- 5.28 hours. Birds flew by dawn and returned before dusk while partners were at sea for long foraging trips that ranged from four to 11 days, with mean maximum distance from colony of 105 +/- 47.48 km. Chicks were usually left alone for hours and chick predation by... |
| Tipo: Text |
Palavras-chave: Tropicbird; GPS; Dual foraging; Behavior. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00626/73778/74931.pdf |
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| Foret, Martin; Barbier, Pierrick; Tremblay, Rejean; Meziane, Tarik; Neumeier, Urs; Duvieilbourg, Eric; Olivier, Frederic. |
| Post-settlement dispersal is a key process in the recruitment of bivalves. To assess the role of such secondary migrations and to identify potential associated triggers, we conducted an in situ sampling survey during the summer recruitment period on the bivalve assemblages of a coarse-sediment temperate tidal habitat in the Chausey archipelago (Normandy, France). The dynamics of drifters were studied using three types of settler traps (for example, bedload, pelagic, and sinking transports), and we monitored both the abiotic (hydrological and hydrodynamic conditions) and the trophic (nano- and pico-sized particulate organic matter [POM]; fatty acid composition of POM and sediment organic matter [SOM]) environmental parameters. Such an approach allows the... |
| Tipo: Text |
Palavras-chave: Behavior; Bivalve recruits; Post-settlement dispersal; Secondary migrations; Trophic environment. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00475/58662/62406.pdf |
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| Taormina, Bastien; Di Poi, Carole; Agnalt, Ann-lisbeth; Carlier, Antoine; Desroy, Nicolas; Escobar-lux, Rosa Helena; D’eu, Jean-françois; Freytet, Florian; Durif, Caroline M.f.. |
| The number of submarine power cables using either direct or alternating current is expected to increase drastically in coming decades. Data concerning the impact of magnetic fields generated by these cables on marine invertebrates are scarce. In this context, the aim of this study was to explore the potential impact of anthropogenic static and time-varying magnetic fields on the behavior of recently settled juvenile European lobsters (Homarus gammarus) using two different behavioral assays. Day-light conditions were used to stimulate the sheltering behavior and facilitate the video tracking. We showed that juvenile lobsters did not exhibit any change of behavior when submitted to an artificial magnetic field gradient (maximum intensity of 200 µT) compared... |
| Tipo: Text |
Palavras-chave: Anthropogenic impact; Behavior; Homarus gammarus; Magnetic field; Submarine power cable. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00599/71152/69473.pdf |
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| Tolotti, Mariana Travassos; Forget, Fabien; Capello, Manuela; Filmalter, John David; Hutchinson, Melanie; Itano, David; Holland, Kim; Dagorn, Laurent. |
| Several pelagic fish species are known to regularly associate with floating objects in the open ocean, including commercially valuable species. The tuna purse seine industry takes advantage of this associative behavior and has been increasingly deploying free-drifting man-made floating objects, also known as fish aggregating devices (FADs). Using passive acoustic telemetry, this study describes the associative dynamics of the main targeted tropical tuna species (Thunnus albacares, T. obesus and Katsuwonus pelamis), as well as three major bycatch species, silky shark (Carcharhinus falciformis), rainbow runner (Elagatis bipinnulata) and oceanic triggerfish (Canthidermis maculata). Short-term excursions away from the FADs were frequently performed by all tuna... |
| Tipo: Text |
Palavras-chave: Behavior; Acoustic telemetry; Residence time; Floating objects; Pelagic fish; Tropical tuna. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00609/72077/71042.pdf |
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| Claireaux, Guy; Queau, Pierre; Marras, Stefano; Le Floch, Stephane; Farrell, Anthony P.; Nicolas-kopec, Annabelle; Lemaire, Philippe; Domenici, Paolo. |
| When oil spills occur, behavior is the first line of defense for a fish to avoid being contaminated. Here, we determined the avoidance threshold of the European seabass (Dicentrarchus labrax) to the water-soluble fraction (WSF) of oil using a dual flow choice box. Our experiment revealed that a plume of 20%-diluted WSF (total PAH concentration: 8.54 μg L-1) triggered a significant avoidance response that was detected within 7.5 minutes of introducing WSF-contaminated water in the experimental set-up. However, the ecological relevance of seabass capacity to detect and avoid WSF remains to be established. In the short term, such response is indeed liable to reduce sea bass contact time with oil-contaminated water and thus preserve their functional integrity.... |
| Tipo: Text |
Palavras-chave: Fish; Oil; Behavior; Avoidance reaction; Water-soluble fraction. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00407/51899/52522.pdf |
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| Monaco, Cristian; Wethey, David S.; Gulledge, Shadow; Helmuth, Brian. |
| The body size of a mobile intertidal invertebrate can determine its access to different microhabitats, and thus alter its exposure to environmental stressors. We surveyed a rocky intertidal keystone predator, the sea star Pisaster ochraceus, and characterized size-dependent distribution, defined by individuals' shore level and refuge use. At 2 field sites (in California and Oregon, USA) we examined temporal and geographical variability in habitat selection. We evaluated the hypothesis that environmental drivers measured on-site and body temperatures measured using biomimetic sensors (i.e. 'robo-sea stars'), explained the observed distribution patterns, including shore-level size gradients, with larger animals lower on the shore. We tested the effect of... |
| Tipo: Text |
Palavras-chave: Ecology; Physiology; Rocky intertidal; Environmental stress; Climate change; Temperature; Desiccation; Solar radiation; Body size; Behavior. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00605/71695/70137.pdf |
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| Coquille, Nathalie; Jan, Gwilherm; Moreira, Aurelie; Morin, Soizic. |
| Many recent ecotoxicological studies suggest a relationship between freshwater contamination and increasing abundances of motile diatoms (potentially able to move). The capacity to escape would present advantages to species in polluted environments. However, actual motility as a response to toxicants had not been described and required experimental validation. We designed a specific experiment to assess how a field-isolated diatom (Gomphonema gracile) distributes energy to in situ resistance (increased population growth or photosynthesis) and escape (behavioral changes), when exposed to increasing concentrations of the herbicide metolachlor. We report here the dose-time dependent responses of G. gracile populations. They coped with low contamination by... |
| Tipo: Text |
Palavras-chave: Diatoms; Physiology; Behavior; Pesticide exposure; Motility; CASA. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00254/36521/35081.pdf |
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| Ferrari, Sebastien; Rey, Sonia; Høglund, Erik; Øverli, Øyvind; Chatain, Beatrice; Mackenzie, Simon; Bégout, Marie-laure. |
| Individual stress coping style (reactive, intermediate and proactive) was determined in 3 groups of 120 pit tagged European seabass using the hypoxia avoidance test. The same three groups (no change in social composition) were then reared according to the standards recommended for this species. Then, 127 days later, individuals initially characterized as reactive, intermediate or proactive were submitted to an acute confinement stress for 30 min. Blood samples were taken to measure plasma cortisol levels 30 min (Stress30) or 150 min (Stress150) after the end of the confinement stress. Individuals were then sacrificed to sample the telencephalon in order to measure the main monoamines and their catabolites (at Stress30 only). Individuals from Stress150 were... |
| Tipo: Text |
Palavras-chave: Fish; Behavior; Physiology; Personality; Brain; Transcriptomic. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00601/71330/69760.pdf |
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| Geffroy, Benjamin; Sadoul, Bastien; Bouchareb, Amine; Prigent, Sylvain; Bourdineaud, Jean-paul; Gonzalez-rey, Maria; Morais, Rosana N.; Mela, Maritana; Carvalho, Lucelia Nobre; Bessa, Eduardo. |
| Nature-based tourism is gaining extensive popularity, increasing the intensity and frequency of human-wildlife contacts. As a consequence, behavioral and physiological alterations were observed in most exposed animals. However, while the majority of these studies investigated the effects of punctual exposure to tourists, the consequences of constant exposition to humans in the wild remains overlooked. This is an important gap considering the exponential interest for recreational outdoor activities. To infer long-term effects of intensive tourism, we capitalized on Odontostilbe pequira, a short-lived sedentary Tetra fish who spends its life close to humans, on which it feeds on dead skin. Hence, those fish are constantly exposed to tourists throughout their... |
| Tipo: Text |
Palavras-chave: Coping style; Ecotourism; Conservation; Behavior; Gene expression; Cortisol; Neurogenesis; Fish. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00423/53470/54366.pdf |
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| Registros recuperados: 191 | |
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