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1

Rozwoj behawioralny pszczoly miodnej a zmiany hormonalne i neuroanatomiczne

100%
Szczuka A.
Wszechświat
|
1999
|
tom 100
|
nr 01-03
29-30
2

Elastycznosc behawioralna mrowek

100%
Szczuka A.
Kosmos
|
1996
|
tom 45
|
nr 2-3
433-442
3
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Content available

Kiełkowanie nasion mutantów zarodkowych Arabidopsis thaliana (L.) HEYNH.

63%
Szczuka E., Szczuka A.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2002
|
tom 488
|
nr 2
4

Effect of oral administration of octopamine on the expression of predatory behaviour in workers of the ant Formica polyctena

63%
Szczuka A., Godzinska E. J.
Acta Neurobiologiae Experimentalis
|
2005
|
tom 65
|
nr 3
5

Cuticle fluorescence during embryogenesis of Arabidopsis thaliana [L.] Heynh.

63%
Szczuka E., Szczuka A.
Acta Biologica Cracoviensia. Series Botanica
|
2003
|
tom 45
|
nr 1
Cuticle visualized by auramine O fluorescence on developing Arabidopsis thaliana embryos was investigated. Localization of the cuticle was studied on embryos of the zygotic wild Ler ecotype and nine lines of embryonic mutant: CS 2330, CS 3009, CS 3016, CS 3023, CS3025, CS 6330, CS 6340, CS 6343 and CS 6346. In Arabidopsis Ler ecotype embryogenesis, a fluorescing cuticle layer appears on the globular embryo and persists during successive stages of development. Such a layer does not occur on the suspensor. In a similar way, fluorescing cuticle envelops the entire globular and older embryo of embryonic mutants, although the embryos of different mutant lines reach different developmental stages.
6

The effect of past and present group size on responses to prey in the ant Formica polyctena Forst

63%
Szczuka A., Godzinska E. J.
Acta Neurobiologiae Experimentalis
|
1997
|
tom 57
|
nr 2
7

Group size: an important factor controlling the expression of predatory behaviour in workers of the wood ant Formica polyctena Forst.

63%
Szczuka A., Godzinska E. J.
Biological Bulletin of Poznań
|
2000
|
tom 37
|
nr 1
8

Responses to novel objects and their habituation in the harvester ant Messor sancta Forel

51%
Szczuka A., Godzinska E. J., Korczynska J.
Acta Neurobiologiae Experimentalis
|
1992
|
tom 52
|
nr 3
9

Wplyw warunkow oswietlenia i stymulacji wzrokowej na strukture ukladu wzrokowego i mozgu oraz na fizjologie i zachowanie sie owadow

51%
Korczynska J., Godzinska E. J., Kieruzal M., Szczuka A.
Kosmos
|
2003
|
tom 52
|
nr 2-3
259-270
10

Analysis of microsatellite polymorphism and genetic differentiation in urban and rural Kestrels Falco tinnunculus [L.]

51%
Rutkowski R., Rejt L., Szczuka A.
Polish Journal of Ecology
|
2006
|
tom 54
|
nr 3
The European Kestrel Falco tinnunculus (L.) is commonly observed in urban-industrial environment. Colonization of cites by the species was shown to be interlinked with changes in its ecology and breeding biology. Such adaptations can lead to isolation of urban populations from rural birds. In this paper we investigated genetic differentiation between birds from centre of Warsaw (Centre Group), suburban area of the city (Suburban Group) and one rural area (Rural Group). We analyse polymorphism of six microsatellite loci in 56 kestrels. The results shown moderate and significant differentiation between Centre and Rural groups and intermediate differentiation among Suburban and two other groups. Although our study is based on small number of individuals and only one rural sampling site, it suggested some level of isolation between city and rural environment. We assumed that observed differentiation might be the result of Urban Island system of appearance and maintenance of kestrel population in Warsaw. We also suspect that suburban areas of the city form a ‘zone of admixture’, where genes from the city and non-urban populations are ‘meeting’.
11

Maximum longevity of workers of three ant species under laboratory conditions [Hymenoptera: Formicidae]

51%
Godzinska E. J., Szczuka A., Korczynska J.
Polskie Pismo Entomologiczne
|
1999
|
tom 68
|
nr 1
12

Effect of the biogenic amines octopamine, tyramine and dopamine on behaviour of ants reunited after a period of social isolation

39%
Korczynska J., Szczuka A., Kieruzel M., Majczynski H., Khvorostova N., Godzinska E. J.
Acta Neurobiologiae Experimentalis
|
2005
|
tom 65
|
nr 3
13

The effects of serotonin, dopamine, octopamine and tyramine on behavior of workers of the ant Formica polyctena during dyadic aggression tests

33%
Szczuka A., Korczynska J., Wnuk A., Symonowicz B., Gonzalez-Szwacka A., Mazurkiewicz P., Kostowski W., Godzinska E. J.
Acta Neurobiologiae Experimentalis
|
2013
|
tom 73
|
nr 4
We investigated the effect of injections of four biogenic amines (serotonin, dopamine, octopamine and tyramine) on behavior patterns displayed by workers of the red wood ant Formica polyctena during dyadic confrontations with four types of opponents: a nestmate, an alien conspecific, an allospecific ant (Formica fusca), and a potential prey, a nymph of the house cricket (Acheta domesticus). Significant effects of biogenic amine administration were observed almost exclusively in the case of confrontations with allospecific opponents. Serotonin treatment exerted stimulatory effects on behavior patterns involving physical aggression (biting accompanied by gaster flexing, dragging and formic acid spraying), but these effects were relatively weak and/or documented by indirect evidence. Dopamine administration exerted a stimulatory effect on open-mandible threats directed by F. polyctena to F. fusca and to cricket nymphs, and on biting behavior directed to cricket nymphs. Surprisingly, octopamine treatment did not exert significant effects on aggressive behavior of the tested ants. Tyramine administration exerted a suppressing effect on threatening behavior directed to F. fusca, but led to shortening of the latencies to the first open-mandible threat during the tests with cricket nymphs. Biogenic amine administration also influenced non-aggressive behavior of the tested ants. Our findings confirmed the role of serotonin and dopamine in the mediation of ant aggressive behavior and documented for the first time significant effects of tyramine treatment on ant aggressive behavior. We also demonstrated that not only specific patterns of ant aggressive behavior, but also behavioral effects of biogenic amine treatments are as a rule strongly context-dependent.
14

Brain GABA levels in workers from two ant subfamilies: inter-specific differences and effects of queen presence/absence

33%
Wnuk A., Kostowski W., Korczynska J., Szczuka A., Symonowicz B., Bienkowski P., Mierzejewski P., Godzinska E. J.
Acta Neurobiologiae Experimentalis
|
2011
|
tom 71
|
nr S
Gamma-butyric acid (GABA), a classical amino acid neurotransmitter, is implicated in the mediation of aggressive behaviour in both vertebrates and invertebrates including social insects. In social Hymenoptera queen absence usually has a suppressing effect on worker aggressiveness and may induce modifications of biogenic amine levels in worker brains. Effects of queen presence/ absence on worker brain levels of classical amino acid neurotransmitters were so far unexplored. To investigate that question and to elucidate the possible role of GABA in the mediation of ant aggressive behaviour we carried out HPLC measurements of GABA contents in individual brains of workers of two ant species, Formica polyctena (subfamily Formicinae) and Myrmica ruginodis (subfamily Myrmicinae) reared in queenright or queenless colony fragments. Immediately before killing the ants (only foragers) were tested in dyadic aggression tests consisting of an encounter with a nestmate, an alien conspecific, or a small larva of the house cricket (Acheta domesticus). In spite of significantly smaller brain weight of workers of M. ruginodis, worker brain GABA levels were significantly higher in M. ruginodis than in F. polyctena. Queen absence was associated with significantly increased brain GABA levels in F. polyctena, but not in M. ruginodis. Brain GABA levels of the tested ants did not depend on the type of the aggression test, and no significant interaction was discovered between the aggression test type and queen presence/ absence. We demonstrate for the first time that queen presence/ absence may influence not only biogenic amine levels, but also levels of classical amino acid neurotransmitters in ant worker brains. Our data also imply that not only brain levels of classical neurotransmitters, but also modifications of these levels induced by changes of social context (queen removal) may significantly differ between various ant phyla.
15

The effect of biogenic amines serotonin, dopamine, octopamine and tyramine on aggressive behaviour of workers of the red wood ant Formica polyctena

33%
Szczuka A., Wnuk A., Korczynska I., Symonowicz B., Gonzalez Szwacka A., Mazurkiewicz P., Francikowski J., Mirecka A., Kostowski W., Godzinska E. J.
Acta Neurobiologiae Experimentalis
|
2009
|
tom 69
|
nr 3
We investigated the effect of abdominal injections of 4 biogenic amines – serotonin (5-HT), dopamine (DA), octopamine (OA) and tyramine (TA) – on behaviour of workers of the red wood ant Formica polyctena in 4 types of aggression tests. The ants were observed during a 10 min encounter with a nestmate, a conspecifi c ant from an alien colony, a worker of another ant species (Formica fusca), and a small larva of the house cricket (Acheta domesticus). DA administration had the most important effect on ant aggressive behaviour. DA injections exerted a stimulatory effect on threats directed to F. fusca and to larvae of A. domesticus and on biting behaviour directed to larvae of A. domesticus. TA suppressed the frequency and the duration of biting behaviour directed to these larvae, although that effect was signifi cant only when the effects of TA were compared with those of DA and 5-HT. TA also reduced self-grooming behaviour, but only in tests with alien conspecifi cs. Other effects of biogenic amine administration included a stimulatory effect of OA on other active behaviour displayed by the ants during the tests with A. domesticus, inhibitory effects of 5-HT, OA and TA on allogrooming of a nestmate, and lenghtening of the latency to the fi rst antennal contact with a nestmate observed in TA and 5-HT-treated ants. The most important effects of biogenic amine administration were observed in the case of interactions of the ants with crickets. Support: grant MNiSW N N303 3075 33.
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