|
|
|
| Registros recuperados: 134 | |
|
| |
|
|
| Cassaro-Silva,Marta; Serrão,José Eduardo; Sousa-Silva,Carlos; Marques-Pacheco,Josué. |
| Females of Orphulella punctata (de Geer, 1794) were captured in the field and kept in cages with food and boxes filled with moist soil for oviposition. The eggs, macerated with 0,85% saline solution and centrifugated, were used as the immunizing antigen for obtention of the specific antiserum (AS-O). Rabbits were immunized by the linphonodule injection method with two injections of this antigen, with an interval of 15 days between the 1st and 2nd inoculations. Serological tests were performed using double diffusion in agar gel with homologous and heterologous antigens. Specific serological reactions were obtained 14 days after the 1st inoculation. The antiserum of the 30th day gave 5, 2-4 and 1-4 precipitation lines respectively with eggs, female and male... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Arthropod; Grasshopper; Antiserum; Antigen; Biological control; Predation. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100007 |
| |
|
|
| Missirian,Giani L. B.; Uchôa-Fernandes,Manoel A.; Fischer,Erich. |
| Antlions larvae are sit-and-wait predators that capture arthropod prey in conical sand pits. The aim of this paper were to determine the effect of different natural diets [leaf-cutting ants (Atta spp.), fruit fly larvae (Anastrepha spp. and Ceratitis capitata) and mixed diet (Atta spp. plus fruit fly larvae)] on the development of larvae and pupae of M. brasiliensis (Navás, 1914) and to estimate the number and size of prey caught in each instar and on each kind of diet. The average duration (days) of the second and third instars of M. brasiliensis was longer when larvae of antlion were fed with leaf-cutting ants. The diets did not affect the duration of the pupal stage nor the pupae size. The different diets did not affect the mean width of head capsule... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antlion; Life history; Predation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400009 |
| |
|
|
| Esbérard,Carlos E. L.; Vrcibradic,Davor. |
| Predation on bats by snakes is relatively infrequently reported in the literature, though it may actually not be an uncommon phenomenon, since bat colonies represent a potential concentration of food for many medium-sized or large snakes. Herein we describe four events of bat predation by snakes and present a review of predation records of snakes on bats in the Neotropics compiled from the literature. A total of 20 species of snakes have been recorded so far as predators of bats in the New World tropics, with boiids being represented by the greatest number of cases. Due to the semi-arboreal habits of most of its species, their large size and their usual preference for mammalian prey, the Boiidae are probably the main reptilian predators of bats in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptation; Boidae; Colubridae; Feeding habits; Predation. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000300036 |
| |
|
| |
|
|
| Caldas,Astrid. |
| A different approach was used for the key-factor method in a population study of the tropical butterfly Fountainea ryphea (Cramer, [1776]) (Lepidoptera, Nymphalidae), marking 20 artificial cohorts to identify the mortality levels and associated instars responsible for the variation in numbers within the season of occurrence, when generations overlap broadly. Highest mortality was detected during first instar in 13 cohorts; during second instar in three cohorts; third and fourth instars suffered highest mortality twice. Results showed that first instar mortality due to rainfall and predation, and parasitism on fourth instar could be the main factors promoting differences in number between cohorts throughout the season, although no density-dependent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bracon; K-factor; Parasitism; Predation. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200009 |
| |
|
|
| Tello-Mercado,Víctor Ernesto; Zarzar-Maza,Miguel Esteban; Suarez-Pantoja,Angélica María. |
| Abstract: The functional response of adult females of predatory mite Cydnodromus picanus Ragusa (Acari: Phytoseiidae) was evaluated at different egg densities (5, 10, 20, 30, 40, 50, 60, 70, 80, 100 and 150 eggs per predator) of Tetranychus urticae Koch (Acari: Tetranychidae), which had 16, 42 and 65 h since oviposition. The experimental design was in a completely randomized blocks with five replicates per treatment. The environmental conditions of the trials were 25±2°C temperature, 50±2% of relative humidity and a photoperiod of 16:8 hours (light: dark). The average consumption rates for the three kinds of prey showed no significant differences (p>0.05) being 20.56±1.02, 18.59±0.79 and 18.38±0.94 prey/predator for eggs of 16, 42 and 65 h age,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Predation; Holling's disc equation; Attack rate; Handling time. |
| Ano: 2017 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000200275 |
| |
|
|
| Arraes,Débora Regina dos Santos; Tavares-Dias,Marcos. |
| Predation and alteration of microhabitats may represent high risk for nesting of Amazonian turtles. This study aimed at investigating the nesting and body parameters of neonates of Podocnemis unifilis in the Araguari River basin, State of Amapá, Brazil. The spawning sites of this turtle were monitored along the Falsino River (a region with two reserves) and in the urban area of the Porto Grande city along the Araguari River, from August to December 2011. A total of 180 nests were found and the nesting occurred from September to November, with prevalence in October. Eggs hatching occurred in December. The mean incubation period was 63.5 ± 5.2 days and the eggs hatching success was 25%. However, approximately 80% of the nests had suffered predation mainly by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body condition; Chelonian; Eggs; Predation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000300012 |
| |
|
| |
|
| |
|
|
| Custódio,Luciana Nascimento; Carmo-Oliveira,Renata; Mendes-Rodrigues,Clesnan; Oliveira,Paulo Eugênio. |
| The ability of plants to generate fertile offspring is influenced by morpho-physiological and ecological factors. Hence, reproductive success is directly linked to factors affecting quantity and quality of their progeny. In the Cerrado (savanna) of Brazil, the Vochysiaceae is a widely distributed and ecologically important family. Factors affecting pre-dispersal seed predation and abortion were studied for populations of Callisthene fasciculata, C. major, Qualea multiflora and Q. parviflora. To characterize differences between genera, as well as among species, study areas, and individuals, we quantified pre-dispersal seed predation and abortion. Differences of seed abortion among the species were related to intrinsic reproductive features and not to area... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed set; Abortion; Predation; Beetles; Neotropics; Savanna; Cerrado. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300002 |
| |
|
| |
|
| |
|
|
| Costa, Fabiano de Mello; UFSCAR; Loffredo, Ana Paula da Silva; UFSCAR; Onody, Helena Caroline; UFSCAR; Sousa-Silva, Carlos Roberto; UFSCAR. |
| O presente trabalho teve como objetivo obter antissoro específico paraAscia monuste orseis (Latreille, 1819) com a finalidade de identificar seus predadores. Para a obtenção do antissoro, um coelho foi imunizado, via linfonódulo, com uma injeção de antígeno obtido pela maceração de lagartas do 4o e 5o instares de A. monuste orseis. Reações serológicas homólogas, realizadas por meio do método de dupla difusão em ágar, foram positivas após 21 dias da 1a inoculação do antígeno. Ovos, lagartas do 1o, 2o e 3o instares, pupas e adultos de A. monuste orseis também reagiram positivamente ao antissoro obtido. |
|
Palavras-chave: 2.00.00.00-6 Ciências Biológicas Insecta; Controle biológico; Antissoros; Predação Insecta; Biological control; Antiserum; Predation. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/515 |
| |
|
| |
|
|
| Fiorelli,Lucas Ernesto. |
| Bite marks and injuries caused by intraspecific predation or aggressive social behavior are un-common in fossil vertebrates, and in the fossil record of suchian archosaurs they are extremely unusual. A peirosaurid crocodyliform collected from the Upper Cretaceous beds of the Neuquén Group (northern Patagonia, Argentina) shows abundant bite marks and injuries. These injuries are spread across all the preserved parts of the specimen, with the highest concentration of bite marks, perforations and breakage in the caudal region. Characteristics of these injuries are analyzed, and their possible origin and related taphonomic aspects are assessed. Results indicate that the injuries were not produced by intraspecific fighting, but probably by the predating action... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bite marks; Predation; Peirosaurid; Upper Cretaceous; Neuquén. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142010000300009 |
| |
|
| |
|
|
| Oliveira,Paulo S.; Pie,Marcio R.. |
| Extrafloral nectaries (EFNs) are nectar-secreting glands not directly involved with pollination which may occur on virtually all above-ground plant parts of angiosperms. Recent studies revealed that such glands are widely distributed amongst the woody flora of the Brazilian cerrados. Plants bearing EFNs are visited day and night by a diverse assemblage of nectarivorous ants. In this review we present the data gathered during the past 15 years on the interaction between ants and EFN-bearing plants in cerrado vegetation. Field experiments indicate that ants visiting EFNs may prey or attack insect herbivores on the plant foliage, significantly reducing herbivore damage to leaves, buds or flowers. As a response, some herbivore species have developed an array... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Hymenoptera; Herbivory; Mutualism; Predation. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000200001 |
| |
|
|
| Pérez,Carlos Daniel; Gomes,Paula Braga. |
| The polychaete Hermodice carunculata is a voracious predator of several benthic organisms and one of the preferential groups in its diet is that of the cnidarians. This note presents the first record of a fireworm preying on the calcified hydroid Millepora alcicornis. The fireworm engulfs the terminal branches of the fire coral and spends several minutes scraping the surface and removing the soft tissues. Despite this being one of the most common calcified hydroids of the Brazilian northern and northeastern regions (and home to a vast associated community), this kind of association had never been recorded. This discovery points to the need of studying such associations because the damage caused by this polychaete is irreversible and depending on the amount... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Amphinomidae; Calcified hydroid; Predation; Brazil. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000200022 |
| |
|
| |
| Registros recuperados: 134 | |
|
|
|
