Consulta: subjectFacets:"Functional response"
Registros recuperados: 9
Data/hora: 06/06/2024 08:36:05

Reprodução de Trichospilus diatraeae Cherian &amp; Margabandhu (Hymenoptera: Eulophidae) em Pupas de Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) em Relação à Idade do Parasitóide e Hospedeiro
Provedor de dados: 25
Autores: Pastori, Patrik Luiz; Zanuncio, José Cola; Silva, Robson Oliveira; Pereira, Fabricio Fagundes; Azambuja, Rosalia; Pereira, José Milton Milagres.
A reprodução de parasitóides apresenta etapas interligadas e a idade de hospedeiros e parasitóides pode afetar o desenvolvimento desses últimos. Características biológicas de fêmeas de Trichospilus diatraeae Cherian &amp; Margabandhu (Hymenoptera: Eulophidae), com até 96 horas de idade, foram estudadas em pupas do hospedeiro alternativo Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae). Cada pupa de A. gemmatalis com 0-24, 24-48, 48-72 ou 72-96 horas de idade, foi oferecida ao parasitismo por 10 fêmeas de T. diatraeae com 0-24, 24-48, 48-72 ou 72-96 horas de idade, por 24 horas à 25 ± 2oC, umidade relativa de 70 ± 10% e fotofase de 14 horas. A emergência, o número de descendentes, a duração do ciclo, a razão sexual, a longevidade e largura da cápsula...
Tipo: Article
Palavras-chave: Criação massal; Hospedeiro alternativo; Resposta funcional; Alternative host; Functional response; Mass rearing.
Ano: 2012
URL: http://hdl.handle.net/2315/231

Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory
Provedor de dados: 5
Autores: Bernard, Ismael; De Kermoysan, Goulwen; Pouvreau, Stephane.
DEB theory can be used to obtain a detailed description of energy allocation in organisms and the control of this allocation by temperature and food concentration. In this study, we modified the model of Bourlès et al. (2009) developed for the Pacific oyster, Crassostrea gigas, to improve the description of reproductive effort. The model was amended in two ways: a new set of parameters was incorporated and a full description of gonad construction in spring was added, with a new state variable. The application of this model to a dataset for oyster growth measured in four bays over two years showed that this model better described reproductive effort, without modifying overall growth dynamics. We then explored the reproductive responses of oysters to their...
Tipo: Text
Palavras-chave: DEB model; Crassostrea gigas; Gametogenesis; Reproductive effort; Spawning date; Functional response.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00059/17047/14606.pdf

Assessing multiple predator, diurnal and search area effects on predatory impacts by ephemeral wetland specialist copepods
Provedor de dados: 5
Autores: Cuthbert, Ross N.; Dalu, Tatenda; Wasserman, Ryan J.; Monaco, Cristian; Callaghan, Amanda; Weyl, Olaf L. F.; Dick, Jaimie T. A.
Predator–prey interaction strengths can be highly context-dependent. In particular, multiple predator effects (MPEs), variations in predator sex and physical habitat characteristics may affect prey consumption rates and thus the persistence of lower trophic groups. Ephemeral wetlands are transient ecosystems in which predatory copepods can be numerically dominant. We examine the interaction strengths of a specialist copepod Paradiaptomus lamellatus towards mosquito prey in the presence of conspecifics using a functional response approach. Further, we examine sex variability in predation rates of P. lamellatus under circadian and surface area variations. Then, we assess the influence of a co-occurring heterospecific predatory copepod, Lovenula raynerae, on...
Tipo: Text
Palavras-chave: Paradiaptomus lamellatus; Lovenula raynerae; Calanoid copepod; Multiple predator effects; Functional response.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00605/71706/70150.pdf

Life history of Amblyseius herbicolus (Chant) (Acari: Phytoseiidae) on coffee plants
Provedor de dados: 82
Autores: Reis,Paulo R.; Teodoro,Adenir V.; Pedro Neto,Marçal; Silva,Ester A. da.
The predaceous mite Amblyseius herbicolus (Chant) is the second most abundant phytoseiid on coffee plants (Coffea arabica L), after Euseius alatus DeLeon, in Lavras, MG, Brazil, associated to the vector of the coffee ring spot virus, Brevipalpus phoenicis (Geijskes) (Acari: Tenuipalpidae). Its life history was studied taking into account biological aspects, life table, predatory activity and functional and numerical responses in relation to the density of the prey. The adult female has longevity of 38 days when supplied with B. phoenicis. The intrinsic rate of population increase (r m) was 0.150 and the mean generation time (T) 25.3 days. The population doubles every 4.6 days. Thirty mites B. phoenicis /3-cm diameter coffee leaf arenas were separately...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biology; Phytoseiid; Functional response; Numerical response; Coffea arabic.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000200016

Tempo de busca e de manuseio de larvas de Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) alimentadas com Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae)
Provedor de dados: 92
Autores: Auad,Alexander M.; Freitas,Sérgio de; Barbosa,Leonardo R.
Searching and handling time of Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) larvae fed on Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae). The objective of this research was to determine the searching and handling times of three larval instars of C. externa fed on U. ambrosiae at densities of 30, 40 and 50 per vial, with the feeding of the larvae at the preceding instars being U. ambrosiae nymphs or Sitotroga cerealella (Olivier, 1819) eggs. The larvae were maintained at 25 ± 2 ºC, 70 ± 10% RH and a 14-h photophase. A completely randomized design in a 6 x 3 factorial scheme with 12 replicates was adopted. The shortest searching time was found for the 2nd and 3rd instar larvae of C. externa, and this parameter was variable depending...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Functional response; Green lacewing.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000400007

Functional and numerical responses and reproduction of Campoletis flavicincta parasitizing Spodoptera frugiperda caterpillars - doi: 10.4025/actasciagron.v35i4.15871
Provedor de dados: 1
Autores: Zanuncio, José Cola; Universidade Federal de Viçosa; Matos Neto, Fausto da Costa; Universidade Federal de Viçosa; Tavares, Wagner de Souza; Universidade Federal de Viçosa; Cruz, Ivan; Embrapa Milho e Sorgo; Leite, Germano Leão Demolin; Universidade Federal de Minas Gerais; Serrão, José Eduardo; Universidade Federal de Viçosa.
The functional and numerical responses, reproductive characteristics, and viability of Campoletis flavicincta (Hymenoptera: Ichneumonidae) as well as the mortality after parasitism of the host Spodoptera frugiperda (Lepidoptera: Noctuidae) were analyzed in the laboratory. Campoletis flavicincta pairs were maintained until female death with 10, 20, 30, 40, or 50 caterpillars day-1 of the host S. frugiperda. A type III functional response curve was fitted to the average number of caterpillars supplied per day during the female wasp lifespan, as the explanatory variable. The handling time was 0.5940 ± 0.0875h, and the instantaneous search 0.0047 ± 0.0020 h-1. The functional response for each of the first five days of the host was a type III. The longevity at...
Palavras-chave: 5.01.02.02-8 fall armyworm; Functional response; Host density; Numerical response; Parasitism; Parasitoid age Entomologia Agrícola.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15871

Behavior of Orius insidiosus preying on Aphis gossypii reared on transgenic and conventional cotton varieties
Provedor de dados: 1
Autores: Veiga, Ana Carolina Pires; Universidade Estadual Paulista “Julio de Mesquita Filho”; Laurentis, Valéria Lucas de; Universidade Estadual Paulista “Julio de Mesquita Filho”; Vacari, Alessandra Marieli; Universidade Estadual Paulista “Julio de Mesquita Filho”; Volpe, Haroldo Xavier Linhares; Universidade Estadual Paulista “Julio de Mesquita Filho”; Ramalho, Dagmara Gomes; Universidade de São Paulo; De Bortoli, Sergio Antonio; Universidade Estadual Paulista “Julio de Mesquita Filho”.
The objective of this study was to evaluate the functional response of Orius insidiosus preying on the third and fourth instars of Aphis gossypii nymphs that were reared on transgenic NuOPAL (Bollgard I Event 531) and conventional Buriti cotton varieties. Fifty O. insidiosus female bugs aged 12–24h were distributed into five different Petri dishes with different densities of A. gossypii (2, 4, 8, 16, and 32 nymphs per plate) for each cotton variety. The number of prey consumed was evaluated over the course of 12h, with a final assessment at 24h. The handling times (Th) and attack rates (a) were 0.0697h and 1.1862h-1, respectively, for the Buriti variety and 0.0713h and 0.3030h-1, respectively, for the NuOPAL variety. The average number of prey consumed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.01.02.00-1; 5.01.02.02-8 cotton aphid; Functional response; Gossypium hirsutum; Minute pirate bug; Transgenic plants Ciências Agrárias  Fitossanidade e Entomologia Agrícola.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17466

Stage preference and functional response of Rhynocoris longifrons (Stål) (Hemiptera: Reduviidae) on three hemipteran cotton pests
Provedor de dados: 52
Autores: Sahayaraj,Kitherian; Kalidas,Subramanian; Tomson,Majesh.
In this work, the stage preference and functional response of the indigenous reduviid bug Rhynocoris longifrons feeding on five different densities of the cotton aphid Aphis gossypii, Phenacoccus solenopsis, and Dysdercus cingulatus was examined in Petri dish arenas containing cotton leaves under laboratory conditions. The reduviid predator exhibited a Type II functional response at all hemipteran pests evaluated when data were fit to Holling's disc equation. Predatory rate gradually increased while the predator grew older and adults consumed maximum number of D. cingulatus and P. solenopsis. An opposite trend was observed, while the reduviid was provided with Aphis gossypii. The rate of attack on P. solenopsis was quite low but fairly consistent, with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cotton pests; Functional response; Reduviid predator; Stage preference.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500013

Predation rate of Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae with and without defense by Podisus nigrispinus (Heteroptera: Pentatomidae)
Provedor de dados: 52
Autores: Zanuncio,José Cola; Silva,Carlos Alberto Domingues da; Lima,Eraldo Rodrigues de; Pereira,Fabrício Fagundes; Ramalho,Francisco de Souza; Serrão,José Eduardo.
The effect of the defense of the prey Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) on predation rates of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) females was studied. P. nigrispinus preyed 1.0, 1.4, 1.2, 3.8 and 3.0 and 0.4, 0.8, 1.6, 2.8 and 3.2 third instars of S. frugiperda larvae with and without defense, respectively, with the densities of one, two, four, six and eight larvae. The attack rate and the manipulation time were, respectively, 0.67 ± 0.39-h and 6.72 ± 2.88 h for P. nigrispinus females fed with larvae with defense and 2.51 ± 0.16-h and 0.51 ± 0.77 h for those without defense. The functional response of the predator P. nigrispinus varies with the defense and the density of the prey S. frugiperda, with larger...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asopinae; Biological control; Predator; Functional response.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100015