Titlebook: Aquatic Oligochaete Biology VI; Proceedings of the V Kathryn A. Coates,Trefor B. Reynoldson,Thomas B. R Conference proceedings 1996 Springe

嚴(yán)重傷害

Age, stage and size structure as population state variables for , (Oligochaeta, Tubificidae)e results are used to establish a size-stage structured matrix population model. The asymptotic behaviour of the model is studied and a basic sensitivity analysis is performed, to evaluate the effects of the observed variability of the matrix elements, on the eventual finite growth rate.

有花

Energy budget of Oligochaeta and its relationship with the primary production of Lake Sevan, Armeniaoduction of the preceding 10 years, which enables a prediction of the quantitative indices of the community of Oligochaeta. The values of energy budget ratios depend on temperature and oxygen regimes but not on the trophic status of the reservoir and were comparatively stable during the observed period.

FIR

Erika Krau?e,D. Goetz,I. Jahn,H. Wu?ingde a comprehensive review of the Naididae including, for the first time, southern Italy and the islands of Sicily and Sardinia. The distribution of species is discussed and taxonomic problems arising from the morphological variability of Italian material are examined.

conceal

https://doi.org/10.1007/978-3-476-03906-4d growth estimates were obtained for .. The sublethal bioassay with . confirmed earlier estimates of a test duration of 4 weeks at 22.5 °C. . cultures can produce usable estimates in 21 days at 30 °C.

seruting

Aquatic Oligochaeta in Italy, with special reference to Naididaede a comprehensive review of the Naididae including, for the first time, southern Italy and the islands of Sicily and Sardinia. The distribution of species is discussed and taxonomic problems arising from the morphological variability of Italian material are examined.

obscurity

A comparison of two tubificid oligochaete species as candidates for sublethal bioassay tests relevand growth estimates were obtained for .. The sublethal bioassay with . confirmed earlier estimates of a test duration of 4 weeks at 22.5 °C. . cultures can produce usable estimates in 21 days at 30 °C.

amyloid

osculate

生來

,Die gro?en Reisen und das Lebensende,. and ., especially considering the small number of locations that have been sampled. The collections include approximately 12 new species of rhyacodrilines (Tubificidae), . (Naididae), . (Alluroididae), . and . (Enchytraeidae). This is the first record of . from outside of Africa and the first new record since 1952.

責(zé)難

https://doi.org/10.1007/978-3-322-93037-8s show that, with the help of general protein pattern analysis, a clear taxonomic decision on the identity of morphologically aberrant forms and of juvenile specimens as well can be achieved with comparatively little expenditure of time. A combined use of morphological and protein data for taxonomic purposes is suggested.