+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Diet of otters Lutra lutra in central Finland

, : Diet of otters Lutra lutra in central Finland. Acta Theriologica 41(4): 395-408

The diet of otters Lutra lutra (Linnaeus, 1758) in central Finland was studied in 1988-1993 by analyzing 1506 spraints. The main components of the diet of otters are fish and amphibians. The most important fishes for otters are small (body length mostly less than 15 cm) cyprinids, perches and pikes. The composition of food varies seasonally. In winter amphibians are the most important prey (33.2% of all food). Perches, pikes and cyprinids are important during all seasons, but in winter small sculpins (9.8% of the food) and burbots (8.9%) are also important. In spring the most important prey are cyprinids (38.7% of the food). Amphibians are important, especially in the smallest streamlets (in winter, 68.4% of the food). Otters also eat toads Bufo bufo. In some areas crayfish and mammals are quite important; but for most otters in the study area salmonids, birds, reptiles, insects, mollusks and plants are only occasional food. Most of the otters in the study area live in small forest rivers. In central Finland in winter amphibians and sculpins are of great importance for otters living in small rivers.


Other references

Iryna Danilina; Alan R.G.llespie; Lee K.B.lick; Amit Mushkin; Michael A.O.Neal, 2012: Performance of a thermal-infrared radiosity and heat-diffusion model for estimating sub-pixel radiant temperatures over the course of a day. Temperature/emissivity estimation from remotely measured radiances generally assumes that scene elements represented by pixels in fact have a single emissivity spectrum and are isothermal. Thus, estimated temperatures and emissivities are the effe...

Aksoy, M., 1962: Results of treatment with folic acid, liver extracts and vitamin B12 on the clinical and hematological characteristics of 25 cases of nutritional macrocytic anemia. Turk Tip Cemiyeti Mecmuasi 28: 601-619

Miller, Gerald W., 2003: System for the removal of organic contaminants from water, air and soil. Discrete non-clumping mechanically stable geometric alloyed material shapes having about 55-95% by weight thermoplastic elastomer and about 5-45% thermoplastic polymer and about 0-12% by weight filler are used for removing organic contaminates fro...

D.Garidel Thoron, P., 1931: Leffort forestier depuis la guerre dans le Cantal, le Puy-de-D6me et la Haute-Loire. An account of reforestation and pasture improvement in 3 departements of central France.

Saleh M.A.; Marei A.E S.M.; Casida J.E., 1980: Alpha cyano 3 phenoxy benzyl pyrethroids derivatizations at the benzylic position. The benzylic position of .alpha.-cyano-3-phenoxybenzyl pyrethroids reacts readily with acetone to form 2-(3-phenoxybenzoyl)-2-propyl esters and with pentafluorobenzyl bromide to give pentafluorobenzyl compounds. Both additions occur via a benzyl a...

Saxton, H.M., 1991: Disagreement over the appropriate use of X-rays. British Journal of Hospital Medicine 46(2): 82-83

Garrett, H.E., 1960: On Un-American Science Reporting. Science 132(3428): 685-685

Reiprich, A., 1981: Revision of some hardly distinguishable butterfly species from Czechoslovakia. 6. Abrostola trigemina Wrnbg., Abrostola triplasia L. and Abrostola asclepiadis Den. et Schiff. (Lepidoptera, Noctuidae). Biologia Seria B: Zoologia6(11): 1003-1013

Hagelstein, M.; Lienert, U.; Ressler, T.; San Miguel, A.; Freund, A.; Cunis, S.; Schulze, C.; Fontaine, A.; Hodeau, J.L., 2004: A scattering filter for energy-dispersive optics. A filtering technique to remove parasitic scattering from X-ray absorption spectra that are acquired in energy-dispersive mode has been developed and tested at the European Synchrotron Radiation Facility. The improved set-up removes small-angle sc...

Hasegawa, A.; Tsubamoto, H.; Hamada, Y.; Koyama, K., 2000: Blocking effect of antisera to recombinant zona pellucida proteins (r-ZPA) on in vitro fertilization. PROBLEM: The zona pellucida is a good target antigen for contraceptive vaccines due to its strong immunogenicity and high tissue specificity. However, this contraceptive effect is inevitably associated with ovarian failure. Therefore, it is necess...