|
|
Tan, X., Kim, D., Usher, N., Laboy, D., Jackson, J., Kapetanovic, A., et al. (2006). An Autonomous Robotic Fish for Mobile Sensing. In Proceedings of the 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems (pp. 5424?5429).
Zusammenfassung: In this paper an innovative approach to robotics education is reported, where hands-on learning is integrated with cutting-edge research in the development of an autonomous, biomimetic robotic fish. The project aims to develop an energy-efficient, noiseless, untethered swimming robot for mobile sensing purposes. The robot is propelled by an ionic polymer-metal composite (IPMC) actuator and equipped with a GPS receiver, a ZigBee wireless communication module, a microcontroller, and a temperature sensor for autonomous navigation, control, and sensing. The two phases of the development are described, emphasizing both the technical approaches and the learning paradigms. The developed robotic fish will be further used as an educational kit for K-12 students and as a research tool for investigating multi-robot collaborative sensing.
Schlüsselwörter: Technik, Roboter, GPS, Umweltdaten
|
|
|
|
Nolte, A. W., Freyhof, J., Stemshorn, K. C., & Tautz, D. (2005). An invasive lineage of sculpins, Cottus sp. (Pisces, Teleostei) in the Rhine with new habitat adaptions has originated from hybridization between old phylogeographic groups. Proc. R. Soc. B, 2005(272), 2379?2387.
Zusammenfassung: Fish abundance surveys in the Rhine system have shown in the past two decades that there is a rapid upriver invasion of a freshwater sculpin of the genus Cottus. These fish are found in habitats that are atypical for the known species Cottus gobio, which is confined to small cold streams within the Rhine drainage. Phylogeographic analysis based on mitochondrial haplotypes and diagnostic single nucleotide polymorphisms indicates that the invasive sculpins are hybrids between two old lineages from the River Scheldt drainage and the River Rhine drainage, although it is morphologically more similar to the Scheldt sculpins. Most importantly, however, the invasive population possesses a unique ecological potential that does not occur in either of the source populations from the Rhine or the Scheldt, which allows the colonization of new habitats that have previously been free of sculpins. Microsatellite analysis shows that the new lineage is genetically intermediate between the old lineages and that it forms a distinct genetic group across its whole expansion range.We conclude that hybridization between long separated groups has lead to the fast emergence of a new, adaptationally distinct sculpin lineage.
Schlüsselwörter: Fisch, Groppe, Cottus, Artbildung, Morphologie, Genetik, Habitat
|
|
|
|
Espanhol, R., Almeida, P. R., & Alves, M. J. (2007). Evolutionary history of lamprey paired species Lampetra fluviatilis (L.) and Lampetra planeri (Bloch) as inferred from mitochondrial DNA variation. Molecular Ecology, 16(9), 1909?1924.
Zusammenfassung: A remarkable trend in the evolution of lampreys is the occurrence in most genera of 'paired species', in which the parasitic anadromous lampreys are believed to have given rise to nonparasitic freshwater resident populations. The present work examines the phylogeography of the European paired species Lampetra fluviatilis and Lampetra planeri, in an attempt to elucidate species pair evolutionary history. We studied sequence variation in cytochrome b and ATPase 6, 8 mitochondrial genes in 63 individuals from 21 localities of the paired species throughout their distribution range. Results from the phylogenetic and nested clade analyses were largely consistent, suggesting the existence of three major evolutionary lineages: lineage I and possibly lineage II are widespread throughout Europe, while the most ancestral lineage III is apparently restricted to the Iberian Peninsula. The high genetic diversity observed in the Iberian Peninsula is probably the result of refugial persistence and subsequent accumulation of variation over several ice ages, whereas the low levels of genetic diversity observed in central and northern Europe should reflect a rapid postglacial colonization. Results suggest that L. planeri originated within at least two distinct evolutionary lineages, rejecting the single origin hypothesis. The observed lack of taxa monophyly within lineage I may be the result of ongoing gene flow if the two taxa are alternate life-history forms of a single species. However, structure within lineage I is also consistent with the hypothesis of divergence of taxa after postglacial dispersion (around 2000 generations ago) with incomplete lineage sorting. Further testing of the alternative hypotheses is warranted.
Schlüsselwörter: Neunauge, Bachneunauge, Lampetra planeri, Flussneunauge, Lampetra fluviatilis, DNA, Phylogeographie
|
|
|
|
Balon, E. K. (1975). Terminology of Intervals in Fish Development. Journal of the Fisheries Research Board of Canada, 32(9), 1663?1670.
Schlüsselwörter: Fisch, Larve, Ei, Ontogenie
|
|
|
|
Weisberg, S. (1993). Using Hard-part Increment Data to Estimate Age and Environmental Effects. Can. J. Fish. Aquat. Sci., 50, 1229?1237.
Schlüsselwörter: Fisch, Alter, Methode, Altersbestimmung, Statistik, Mathematik, Schuppe, Knochenstruktur
|
|
|
|
Gozlan, R. E., Feist, S. W., Martin, P., & Kent, M. L. (2005). Disease threat to European fish. Nature, 435(6), 1046.
Schlüsselwörter: Fisch, Leucaspius delineatus, Moderlieschen, Parasit, Sphaerothecum destruens
|
|
|
|
Riffel, M., & Schreiber, A. (1998). Morphometric differentiation in populations of the Central European sculpin Cottus gobio L., a fish with deeply divergent genetic lineages (Vol. 76).
Schlüsselwörter: Fisch, Population, Genetik, Groppe, Mühlkoppe, Cottus gobio, Verbreitung
|
|
|
|
Albuquerque, C. Q., & Muelbert, J. H. (2004). The use of haematoxylin stain to improve contrast of growth increments in otoliths of larval whitemouth croaker. Journal of Fish Biology, 64, 794?797.
Schlüsselwörter: Fisch, Otolith, Wachstum, Alter, Bestimmung
|
|
|
|
BORA, N. D., & Gül, A. (2004). Feeding Biology of Silurus glanis (L., 1758) Living in Hirfanli Dam Lake. Turk J Vet Anim Sci, 28, 471?479.
Schlüsselwörter: Fisch, Wels, Silurus glanis
|
|
|
|
EELREP. (2005). FINAL REPORT: Estimation of the reproduction capacity of European eel.
Schlüsselwörter: Fisch, Aal, Anguilla anguilla, Fortpflanzung, Parasit, Wanderung
|
|
