Results: 41

Predator preferences: a key to effective biological control design

Objetctive: This experimental study aimed to assess the preference of Gambusia affinis to mosquito larvae of An.gambiae s.s., Cx. quinquefasciatus and Aedes aegypti. Method: Three Gambusia affinis were introduced in a glass container with a dimension of 45cm x 25cmx 25cm. Three larvae densities were used...

Gall traits and galling insect survival in a multi-enemy context

Rev. biol. trop; 69 (1), 2021
Introduction: The enemy hypothesis postulates that gall traits protect galling insects against natural enemies. Galls show a huge range of sizes, colors and ornaments, which vary even intraspecifically. However, galling insects are targets of various organisms that attack them directly or indirectly. In ...

The coevolution between telson morphology and venom glands in scorpions (Arachnida)

As in previous contributions to the JVATiTD, the aim of this note is to bring some general information on a particular aspect of the scorpion biology. An attempt is made to explain the possible coevolution of telson morphology and venom glands, which took place during several hundred million years and in...

Relação entre distância de fuga e massa corpórea de aves

J. Health Sci. Inst; 37 (4), 2019
Objetivo – Mostrar a correlação existente entre a massa corporal de aves e a distância de fuga das mesmas. Métodos – Foram observadas aves em período reprodutivo e não reprodutivo em diferentes locais do município de Jacareí-SP. Foi realizada uma abordagem em diferentes espécies de aves anda...

Insights into the development of a juvenile harpy eagle’s hunting skills

Acta amaz; 49 (2), 2019
The post-fledging period is of paramount importance for raptors, since this is when a juvenile develops its hunting skills and gains the abilities required in adulthood and independence through dispersal. Little is known however, about this stage in the lives of raptors such as harpy eagles, Harpia harpy...

Predation of an American fruit-eating bat (Artibeus sp. ) by an Amazon tree boa (Corallus hortulanus) in the northern Brazilian Amazon

Acta amaz; 49 (1), 2019
We report an observation of predation by an Amazon tree boa, Corallus hortulanus, on an American fruit-eating bat, Artibeus sp., in an area of seasonal forest close to a small stream in the northern Brazilian Amazon. While bats appear to be one of the main food items of C. hortulanus, our observation is ...

Dengue: 30 years of cases in an endemic area

Clinics; 74 (), 2019
The present study aimed to review literature on studies of dengue cases conducted over 30 years in the state of Ceará. Between November 2015 and January 2016, articles published in Portuguese and English in 7 databases were searched using keywords and a Boolean operator. A total of 191 articles were i...

Foraging behavior and at-sea distribution of White-Tailed Tropicbirds in tropical ocean

Braz. j. biol; 78 (3), 2018
Abstract We used miniaturized GPS loggers and site observations to access foraging patterns and nest behaviour of the White-tailed Tropicbird Phaethon lepturus (WTTB), an endangered species at its South Atlantic breeding colony. Dual foraging pattern was observed with alternation between long and short f...

Producción de frutos de Gleditsia amorphoides (Fabaceae) y abundancia de Bruchidius endotubercularis Arora (Coleoptera: Chrysomelidae) en Formosa, Argentina

Rev. biol. trop; 66 (3), 2018
Resumen Gleditsia amorphoides (Griseb.) Taub. es una especie arbórea nativa de Sudamérica, conocida por su madera de buena calidad y por los frutos que contienen una goma de utilización industrial. Una de las causas de la disminución de la producción de semillas viables en árboles forestales es el ...

The behavior of Aphis gossypii and Aphis craccivora (Hemiptera: Aphididae) and of their predator Cycloneda sanguinea (Coleoptera: Coccinellidae) in cotton-cowpea intercropping systems

An. acad. bras. ciênc; 90 (1), 2018
ABSTRACT The intercropping is an important cultural practice commonly used in pest management. It is based on the principle that increased plant diversity in the agro-ecosystem can lead to reductions of pest populations in the crop. The current study aimed to assess the impact the colored fiber cotton-co...