Nl. Krushinska et L. Rychlik, AGGRESSIVENESS OF A NEOMYS-FODIENS PAROUS FEMALE TOWARDS CONSPECIFIC AND N-ANOMALUS INTRUDERS, Acta Theriologica, 39(3), 1994, pp. 329-332
Reactions of a Neomys fodiens (Pennant, 1771) parous female [FP] to 4
conspecific and 3 N. anomalus Cabrera, 1907 intruders were studied qua
ntitatively in enclosure (135 x 135 cm) experiments. Total time of obs
ervations was 30 hr. FP initiated 5.6 intraspecific conflicts per 1 hr
(1.95/hr of these were pouncings and fightings) with adult males, 0.8
conflicts/hr with a juvenile female, and 4.7 conflicts/hr with a N. a
nomalus adult male. Reactions of N. fodiens parous female were several
times more aggressive than interactions between non-breeding 'residen
ts' and 'immigrants' of both water shrew species tested under the same
conditions in earlier studies.