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| Poot, Hanneke; Max Planck Institute for Ornithology; hanneke_poot@hotmail.com; Ens, Bruno J.; SOVON Dutch Centre for Field Ornithology; bruno.ens@sovon.nl; de Vries, Han; Utrecht University; j.devries@bio.uu.nl; Donners, Maurice A. H.; Philips Lighting; maurice.donners@philips.com; Wernand, Marcel R.; Royal Netherlands Institute for Sea Research; wernand@nioz.nl; Marquenie, Joop M.; Shell EP Europe (NAM B.V.); joop.marquenie@shell.com. |
| The nighttime sky is increasingly illuminated by artificial light sources. Although this ecological light pollution is damaging ecosystems throughout the world, the topic has received relatively little attention. Many nocturnally migrating birds die or lose a large amount of their energy reserves during migration as a result of encountering artificial light sources. This happens, for instance, in the North Sea, where large numbers of nocturnally migrating birds are attracted to the many offshore platforms. Our aim is to develop bird-friendly artificial lighting that meets human demands for safety but does not attract and disorient birds. Our current working hypothesis is that artificial light interferes with the magnetic compass of the birds, one of... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Artificial light; Bird-friendly lighting; Ecological light pollution; Light color; Magnetic compass; Nocturnally migrating birds; Orientation. |
| Ano: 2008 |
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| Wang,Xiu-Fang; Jin,Xia; Wang,Xiaoyan; Liu,Jing; Feng,Jingjing; Yang,QinQing; Mu,Wenli; Shi,Xiaojuan; Lu,Zhanjun. |
| The retrotransposon known as long interspersed nuclear element-1 (L1) is 6 kb long, although most L1s in mammalian and other eukaryotic cells are truncated. L1 contains two open reading frames, ORF1 and ORF2, that code for an RNA-binding protein and a protein with endonuclease and reverse transcriptase activities, respectively. In this work, we examined the effects of full length L1-ORF2 and ORF2 fragments on green fluorescent protein gene (GFP) expression when inserted into the pEGFP-C1 vector downstream of GFP. All of the ORF2 fragments in sense orientation inhibited GFP expression more than when in antisense orientation, which suggests that small ORF2 fragments contribute to the distinct inhibitory effects of this ORF on gene expression. These results... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gene expression; Green fluorescent protein gene; L1-ORF2; Transcription termination; Orientation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400003 |
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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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| Basterretxea, G.; Font-munoz, Joan Salvador; Tuval, I. |
| Phytoplankton are by definition autotrophic microorganisms that passively drift with fluid motion. Accordingly, the traditional view of a turbulence-homogenized phytoplankton distribution in the ocean, where cells randomly organize and interact, is deeply rooted in biological oceanography studies. However, increasing understanding of microscopic processes in the ocean is revealing a world of microscale patterns resulting from cell behaviors and fluid-cell interactions that challenges this vision. Autotrophic cells have developed active (i.e., flagella) and passive (i.e., morphological structures and vesicles) motility mechanisms that allow them different degrees of spatial control. Their complex interaction with the ocean physicochemical landscape commonly... |
| Tipo: Text |
Palavras-chave: Phytoplankton; Microscale; Turbulence; Orientation; Shear. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00621/73261/72476.pdf |
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| Araújo,Arrilton; Rodrigues,Zenilde. |
| The search for and ingestion of food are essential to all animals, which spend most of their lives looking for nutritional sources, more than other activities such as mating, intra-specific disputes or escaping from predators. The present study aims to describe and quantify several aspects of foraging behavior, diet and food transport in the queenless ant Dinoponera quadriceps Santschi in a secondary Atlantic forest, Northeastern Brazil. Three colonies were randomly selected at a distance of at least 50 m from one another. On leaving the colony, worker ants were followed until their return, with no nutritional provision or interference with their activities. Activities were recorded using focal time sampling with instantaneous recording every minute for 10... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foraging pattern; Diet; Orientation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000200002 |
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