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1
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Body condition of male farm mink (Neovison vison) during a mating season

100%
Felska-Blaszczyk L., Dziadosz-Stys M., Lawrow N.
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
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2017
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tom 42
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nr 2(334)
2

Some observations on the mating behaviour of captive American pine martens Martes americana

100%
Grant J., Hawley A.
Acta Theriologica
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1996
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tom 41
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nr 4
Four male and 8 female captive pine martens Martes americana (Turton, 1806) were observed for signs of mating. Behavioural changes associated with the breeding season began in mid-June. Subjective observation indicated that the frequency of abdominal scent marking and body contact between males and females increased from June through July and decreased during August. Aggression between females in­creased markedly during the breeding season. The animals emitted diverse vocaliza­tions, including a throaty chuckle that was associated with breeding and that was indistinguishable by observers from a call emitted when females appeared to be consoling young kits. Copulation was observed on 4 occasions during July in one pair of martens, and was typical of that described for Martes species in general. Two individual copulatory acts were timed and lasted 5 and 14.5 min, respectively. The female appeared to control the timing and duration of copulation and seemed in one instance to actively solicit the attention of the male.
3

Ultrasonic communication in rodents

100%
Marchlewska-Koj A.
Polish Ecological Studies
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1994
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tom 20
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nr 3-4
4
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Dogs' aggressive behaviors. Part I. Neurobiological mechanisms and animals' predispositions

86%
Horoszewicz E., Galas J., Smolnik K., Niedziolka R., Sweklej E.
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
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2017
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tom 41
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nr 1(332)
5
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Dogs' aggressive behaviors. Part II. Body postures, sequence of actions

86%
Horoszewicz E., Galas J., Smolnik K., Niedziolka R., Sweklej E., Piwowarczyk p.
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
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2017
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tom 42
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nr 2(334)
6

Behavioural variation in two populations of root voles

86%
Kapusta J., Pachinger K., Marchlewska-Koj A.
Acta Theriologica
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1999
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tom 44
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nr 4
Significant morphological and physiological variations between root vole Microtus oeconomus (Pallas, 1776) populations have been found. Behavioural differences between two geographically separated populations were found in this study. Ultrasonic vo­calization and behavioural interaction (non-aggressive and aggressive approaches) were monitored during 10-min encounters. Ultrasounds were monitored during encounters involving all possible combinations of males and females of two populations, called here southern (Prague, Czech Republic) and northern (Białowieża, Poland). The northern male-male combination did not produce ultrasounds. In both populations, males exhibited more aggressive behaviour than females did. Since M. oeconomus females are highly territorial and the home ranges of males overlap, the agonistic behaviour of males may enable them to control a larger area with greater numbers of receptive females. We also found significant differences in behavioural activity between the two investigated populations: southern M. oeconomus showed higher activity than northern root voles did. Separate populations which differ morphologically and behaviourally have much to tell us about speciation processes. Behavioural divergence can lead to reproductive isolation and thus create separate gene pools.
7

An observation of aggressive physical interaction between free-ranging lynx

86%
Wolfl M., Wolfl S.
Acta Theriologica
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1996
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tom 41
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nr 4
During a study of Lynx lynx (Linnaeus, 1758) in the Jura Mountains of Switzer­land, we observed a fight between a radio-collared adult female and an unmarked lynx. The resident female attacked the other lynx and finally drove it away.
8

Water striders are prescient foragers: use of sensory information for patch assessment in food-based territoriality of Aquarius remigis [Gerridae, Heteroptera]

86%
Jablonski P. G., Scinski M.
Polish Journal of Ecology
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1999
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tom 47
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nr 3
9

Intraspecific behavioural interactions in Apodemus microps: a peaceful mouse?

86%
Suchomelova E., Frynta D.
Acta Theriologica
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2000
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tom 45
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nr 2
Social interactions of captive Apodemus microps Kratochvil et Rosicky, 1952 were studied in dyadic encounters. In neutral-cage conditions both sexes showed exceptionally high proportion of amicable behaviour (on average ca 30% of the total time) and very low proportion of agonistic behaviour (up to 2.1%), when compared to patterns reported in other Apodemus species. The high share of amicable behaviour cannot be simply explained by decreased aggression. Mice actively offered amicable acts to their unfamiliar conspecifics even during the short-time (ten-minute) encounters. This phenomenon may be interpreted as a cooperative strategy. However, the near absence of aggression in A. microps could be altered by specific social contexts: males, but not females, became mutually agonistic when tested in a home-cage or in the presence of a female.
10

Social interactions associated with reproduction in the bushveld gerbil Gerbilliscus leucogaster

72%
Lotter T. K., Pillay N.
Acta Theriologica
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2012
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tom 57
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nr 1
The study of social behaviour can give us important insights into the social and mating system of a species or population. We investigated male–female interactions in captive bushveld gerbils, Gerbilliscus leucogaster, to gain insight into the social behaviour and mating structure. We conducted two experiments. In experiment 1, we studied the interactions between two strangers for a week in a three-tank setup, which tested behavioural variation spatially and temporally. Although tolerance between strange males and females increased with time, it remained generally low throughout the experiment. Females appeared to be cautious of males initially, but they later became aggressive towards them. Males showed an increase in submissive behaviour over time. The ‘home’ cage did not appear to be defended by either sex. In experiment 2, we investigated the social interactions of male–female pairs during pregnancy and lactation. Aggression persisted throughout the study and amicable behaviour was low; females were much more aggressive than males. We did not detect changes in social behaviour with the progression of pregnancy and lactation. We suggest that pair bonding is unlikely and that promiscuity is the most probable mating system. Female aggression may be related to mate choice prior to mating and mate exclusion thereafter, while it may be a response to infanticide risk during pregnancy and lactation.
11

Inter-male aggression in relation to female availability and residence status in corn mice Calomys musculinus

72%
Steinmann A. R., Priotto J. W.
Acta Theriologica
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2011
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tom 56
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nr 1
We conducted an experimental study to test the hypothesis that, at low female availability, males show intrasexual aggressive behaviour and home range owners are more aggressive than home range intruders. Using field dyadic arena test, we carried out 35 male–male trials in four 0.25 ha enclosures, two male-biased (experimental enclosures) and two unbiased (control enclosures). Dyadic encounters were conducted between unrelated and sexually mature males of similar weight and age which established home ranges in the same enclosure at the same trapping session. Each inter-male encounter was performed in the home range of one of the opponents between the home range owner and a home range intruder. When sex ratios were male-biased, inter-male amicable behaviour was absent and we found significant rates of inter-male aggressiveness, being home range owners much more aggressive than intruders. In the unbiased enclosures, inter-male encounters resulted mainly in noninteractive or amicable interactions. We found that inter-male aggression varied in relation to female availability being more evident in home range owners.
12

Spatial distribution of testosterone-treated male and female mice in the field

72%
Vandenbergh J. G., Zielinski W. J.
Polish Ecological Studies
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1994
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tom 20
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nr 3-4
13

Behaviour of bank vole females during open-field or home-cage tests

72%
Jawor J., Kruczek M.
Polish Ecological Studies
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1994
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tom 20
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nr 3-4
14

Sexual experience affects behaviour of bank voles Clethrionomys glareolus

72%
Kapusta J., Marchlewska-Koj A., Olejniczak P.
Acta Theriologica
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1994
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tom 39
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nr 4
Behavioural activity of Clethrionomys glareolus (Schreber, 1780) is modified by social factors. Interaction between sexually nonexperienced (NExp) and experienced (Exp) animals was investigated. Males and females were tested in pairs in the male home cage during 10 min encounters. Aggressive and nonaggressive behaviour was recorded, and ultrasonic vocalization was monitored by a QMC ultrasound detector. The obtained results indicate that total activity of Exp females was significantly higher than NExp females (p < 0.05). Only females exhibited aggressive behaviour toward males, but there was no difference in aggressive activity related to sexual experience. Total activity of Exp males was higher than that of NExp ones (p < 0.05). Our previous results indicate that in adult bank voles only males produce ultrasounds. In these experiments significantly more calls was recorded when Exp males were tested and compared with NExp males (p < 0.05). This study provides additional information about interaction between breeding and non-breeding animals in a bank vole popu­lation.
15

Perch-site use and inter- and intraspecific aggression of migratory Brown Shrikes [Lanius cristatus] in Southern Taiwan

58%
Yosef R.
Biological Letters
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2004
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tom 41
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nr 2
113-118
16

Corpse carrying in ants [Hymenoptera: Formicidae]: behavioural side effect of aggressive arousal or competitive signalling?

58%
Czechowski W., Marko B., Godzinska E. J.
Polish Journal of Ecology
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2009
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tom 57
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nr 2
341-352
Some literature reports show that ants use bodies of their dead nestmates and other insect remains in conflict situations. The paper describes such phenomenon in a Formica rufa L. colony brought into conflict with a F. cinerea Mayr colony when the former tried to extend its own territory at the expense of the latter. A territorially stable F. rufa colony, neighbouring the same F. cinerea colony, served as control. Workers of the expansive F. rufa colony were repeatedly observed to carry numerous ant corpses, empty pupal cocoons and insect leftovers from their nest to the place of confrontation with F. cinerea, on a much bigger scale than workers of the stable F. rufa colony. Corpse-carrying intensity was not correlated with the general activity level of foragers which suggests that corpse carriers could be a separate task group. Workers of a small colony of F. cinerea were also observed to surround their nest entrance with corpses of their nestmates and prey remains, taken out from inside the nest, in response to intensified traffic of workers of F. rufa in the vicinity of their nest. These results are discussed in the context of a possible interrelation between ant aggressive behaviour and transport behaviour. Two hypotheses are proposed to explain the observed phenomenon: (1) explaining it as a by-product of the aggressive arousal of workers, and (2) ascribing to it a possible signalling function in conflict situations.
17

DSP-4 lesion of locus coeruleus does not affect spontaneous predatory behaviour in cats

58%
Kubiak P., Zagrodzka J.
Acta Neurobiologiae Experimentalis
|
1993
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tom 53
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nr 4
18
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Body weight of high and low aggression mice under various population densities

58%
Oikawa T., Kawamoto Y., Nakamura S., Morimasa T., Sato K.
Journal of Applied Genetics
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2000
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tom 41
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nr 1
19

The effects of stocking rate and modified management on the welfare of laying hens in non-cage systems

58%
Zimmerman P., Brown S., Glen E., Lindberg C., Pope S., Short F., Warriss P., Wilkins L., Nicol C.
Animal Science Papers and Reports. Supplement
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2005
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tom 23
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nr 1
20

Ksztaltowanie sie fenotypowej struktury populacji Phytophthora infestans w Polsce w ciagu 15-lecia 1987-2001

51%
Zarzycka H., Sobkowiak S., Lebecka R., Tatarowska B.
Acta Agrobotanica
|
2002
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tom 55
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nr 1
389-400
The formation of phenotypic structure of P. infestans population in Poland was determined by analyzing 1603 isolates collected from 1987 to 2001. The race complexity, low at the beginning of experiment, has been increasing from year to year and reached in 2001 a high level 7.2 virulence factors per isolate. The single and less composed races dominating first1y in the population were replaced gradually by more composed races. The virulence factors 1, 2, 3, 4, 7 and 11 occurred most frequent1y, but factors 5 and 8 were noted sporadically. The A2 mating type was detected in 1988 at first and since that time its occurrence has been noted in Polish population each year. The oospores were formed in potato tissues. Race diversity, low at the beginning of the investigation, reached a peak in 1996-2001. During 1987-1990 weakly and middly aggressive phenotypes dominated in Polish population. In the later period very aggressive isolates were more frequent. Phenotypic race similarity of P. infestans populations in 1987 and 2001 was very low. The race structure of 1987 population was totally different from the race structure of populations of the next years. it was probably due to migration of new pathotypes. On the other hand the variation in complexity, diversity and similarity of races, as well as in aggressiveness observed in later years of investigation can be caused by the presence of both mating types and sexual recombination.
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