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Köhler, C. (1992). Morphologische Untersuchungen zur intraspezifischen Vriabilität des Rotauges, Rutilus rutilus (L.) aus dem Rhein (Vol. 6).
Schlüsselwörter: Fisch, Rotauge, Rutilus rutilus, Morphologie
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Soriano, M., Moreau, J., Hoenig, J. M., & Pauly, D. (1992). New functions for the analysis of two-phase growth of juvenile and adult fishes, with application to Nile perch (Vol. 121).
Zusammenfassung: Two phases of growth can sometimes be distinguished in long-lived fish species. The first involves the growth of zooplankton-feeding juveniles and young adults. The second consists of accelerated growth of large, piscivorous adults. We present modified versions of the von Bertalanffy growth equation that account for this feature and fit them to length-at-age data on Nile perch Lates niloticus (Centropomidae) from Lake Chad (north and south) in north-central Africa, and from Lake Nasser in Egypt. The growth parameters estimated for the new equations allow one to make preliminary estimates of the energy gains by Nile perch associated with transition from zooplanktivory to piscivory.
Schlüsselwörter: Fischerei, wachstum, theorie, modell
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Akamine, T., Kishino, H., & Hiramatsu, K. (1992). Non-biased interval estimation of Leslie's removal method.
Zusammenfassung: Leslie's removal method, which is used to estimate the initial population size and the removal ratio simultaneously, is modeled in terms of the product of binomial distributions. The approximation of these binomial distributions to the standard normal distribution presents a new method which has no bias for estimators. This is an improvement over the maximum likelihood method and the likelihood ratio test, and is essentially equivalent to a standard goodness-of-fit test. The confidence region on the 2-dimensional plane defined by the initial population size and the removal ratio gives each confidence interval. This region is defined by the chi-square distribution with 2 degrees of freedom.
Schlüsselwörter: Fisch, statistik, modell, binominal, population, basic, listing
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Rydlo, M. (1992). Parasitische Helminthen in Aalrutten (Lota lota L.) aus Seen und Fließgewässern Österreichs (Vol. 94/95).
Schlüsselwörter: Fisch, Parasit, Quappe, Trüsche, Lota lota
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Schwalb, O. (1992). Populationsdynamik der Bachforelle (Salmo trutta f. fario Linne 1758) in Fließgewässern des Buntsandstein-Odenwaldes. Heidelberg: Universität.
Schlüsselwörter: Fisch, Bachforelle, Dynamik, Population, Salmo trutta fario
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Kohler, U. (1992). Populationsgenetische Untersuchungen am Flußbarsch (Perca fluviatilis L.) unter Anwendung von DNA-Fingerprinting mit Digoxigenin-markierten Oligonikleatid-Sonden. Mainz: Universität.
Schlüsselwörter: Fisch, Genetik
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Waterstraat, A. (1992). Populationsökologische Untersuchungen an Cottus gobio L. und anderen Fischarten aus zwei Flachlandbächen Norddeutschlands (Vol. 22).
Schlüsselwörter: Fisch, Groppe, Cottus gobio, Habitat, Population
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Brors, D. (1992). Portable C-Funktionen.
Schlüsselwörter: Turbo-c, c, dokumentation, portierung, tips
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Hartmann, J. (1992). Rückgang von Kondition und Wachstum der Felchen (Coregonus lavaretus) durch selektive Kiemennetzbefischung (Vol. 6).
Schlüsselwörter: Fisch, Coregonus, Bewirtschaftung, Wachstum
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Balling, T. (1992). Saisonale und standortabhängige Verbreitung von Fischparasiten im Bodensee-Obersee und ihr Einfluß auf den Ernährungszustand der Fische. Doctoral thesis, Eberhard-Karls-Universität, Tübingen.
Schlüsselwörter: Fisch, Parasit
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