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Abundance changes and activity flexibility of the oncilla, Leopardus tigrinus (Carnivora: Felidae), appear to reflect avoidance of conflict Rev. Bras. Zool.
Oliveira-Santos,Luiz Gustavo R.; Graipel,Maurício E.; Tortato,Marcos A.; Zucco,Carlos A.; Cáceres,Nilton C.; Goulart,Fernando V. B..
We investigated the density and activity of the oncilla, Leopardus tigrinus (Schreber, 1775), a threatened small cat, in the Brazilian Atlantic Forest, using camera-trap data. We described differences in the activity of individuals occurring alone or in sympatry with larger cats. Oncilla presented low densities (7-13 ind./100 km²) and high flexibility in its activity. The oncillas were primarily nocturnal in the absence of other larger cat species - margay, ocelot and puma - but became more diurnal, with a cathemeral activity pattern, when the other cats were present. Oncilla is likely to be in a subordinate position in interactions with larger cats and changes its activity to decrease the chances for interspecific encounters. In this study, however, the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Activity pattern; Camera trap; Intraguild competition; Little spotted cat; Neotropical felid guild.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200003
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Interspecific interaction between Telenomus remus (Hymenoptera: Platygastridae) and Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) on Spodoptera frugiperda (Lepidoptera: Noctuidae) eggs Anais da ABC (AABC)
Carneiro,Tatiana R.; Fernandes,Odair A..
This work aimes to evaluate the interspecific interaction between Trichogramma pretiosum and Telenomus remus, two biological control agents of fall armyworm (Spodoptera frugiperda) eggs. Eggs of Spodoptera frugiperda previously parasitized by Telenomus remus were offered to Trichogramma pretiosum, and those parasitized by Trichogramma pretiosum were offered to Telenomus remus. The previously parasitized eggs were tested at different embryonic development stages for each parasitoid. In addition, to evaluate the competition between species, Spodoptera frugiperda eggs were offered to the parasitoids simultaneously. The behavior of the insects was recorded under a stereomicroscope. When Spodoptera frugiperda eggs were previously exposed to either parasitoid,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Intraguild competition; Egg parasitoid; Parasitoid behavior.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400027
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