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Ecological relationships between feather mites (Acari) and wild birds of Emberizidae (Aves) in a fragment of Atlantic Forest in northeastern Brazil
It was observed that the genera with higher percentage were Pterodectes (88,04%), Proctophyllodes (56,52%) and Trouessartia (45,65%) while among the 94 birds examined, 92 were infested.
Genetics: relation of local populations to the whole "species" - implications for host range tests.
A molecular phylogeny based on three nuclear and two mitochondrial genes indicated that these compatible, allopatric populations are distinct lineages, and morphometric analyses showed subtle differences in host specificity.
Study of the Dung Beetle (Coleoptera: Scarabaeidae) Community at Two Sites: Atlantic Forest and Clear-Cut, Pernambuco, Brazil
A positive correlation was observed between monthly rainfall and total abundance of individuals for the clear-cut area but not for the forest habitat, which contributes to a better understanding of Scarabaeinae ecology in the Atlantic rainforest of northeastern Brazil.
Responses of female Aphelinus asychis (Hymenoptera: Aphelinidae) and Aphidius matricariae (Hymenoptera: Aphidiidae) to host and plant-host odors
Results suggest that greater attraction to D. noxia cannot explain the greater abundance of A. asychis found on this host in the field, and suggests that A. matricariae females spent more time in the D.noxia odor field than in the other odor fields, whether or not they were experienced with the plant–host complex.
Oviposition Behavior of Aphelinus asychis (Hymenoptera: Aphelinidae) and Aphidius matricariae (Hymenoptera: Aphidiidae) and Defense Behavior of Their Host Diuraphis noxia (Homoptera: Aphididae)
Neither difference in the efficacy of aphid defense nor difference in oviposition behavior can explain greater parasitism by A. asychis in the field.
Damage Symptoms and Abundance of Diuraphis noxia (Homoptera: Aphididae) for Four Wheat Cultivars at Three Irrigation Levels
The results of these experiments suggest that neither irrigation nor drought tolerance directly reduce density or impact of D.noxia, and one must look at other mechanisms to explain the negative correlation between high rainfall and D. noxia abundance.