نتایج جستجو برای: sex parasitism

تعداد نتایج: 213152  

2017
E. Singh P. Kaur L. D. Singla M. S. Bal

AIM The aim of this study was to explore the prevalence of gastrointestinal parasitism in small ruminants in relation to various risk factors in the western zone of Punjab. MATERIALS AND METHODS During the study, 603 fecal samples (391 of sheep and 212 of goats) were examined qualitatively by floatation and sedimentation techniques, and quantitatively by McMaster technique. RESULTS Out of t...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2007
Filipe Anibal Carvalho-Costa Alessandra Queiroga Gonçalves Sandra Laranjeira Lassance Luanda Macedo da Silva Neto Carla Alexandra Almeida Salmazo Marcio Neves Bóia

The objective of this survey was to assess the relationships between intestinal parasitism, nutritional status and hemoglobin level in children with Indian ascendancy living in an urban area in Brazilian Amazon. We carried out a cross-sectional survey obtaining anthropometric, parasitological and socioeconomic data, and hemoglobin measurements of children aged six to 84 months. Anthropometric d...

2013
Jander R. Souza Geraldo A. Carvalho Alexandre P. Moura Marcelo H.G. Couto Jader B. Maia

Corn (Zea mays L.) is cultivated in large areas and considered one of the world’s major cereal crops. There are several arthropod pests that can reduce its production such as the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lep.: Noctuidae), which is considered to be the main pest for corn. Fall armyworm is primarily controlled by insecticides. The use of biological control agents to mana...

Journal: :Biological Control 2021

Aphids are serious pests of many crops in agroecosystems and their biological control is focused on enhancing the performance specialized natural enemies aphids such as parasitoid wasps predators like ladybirds. However, ladybirds often attacked by own parasitoids fourth trophic level that can negatively affect ladybird and, hence, effectiveness agents. The biology ecology these has been less w...

Journal: :Current Biology 2013

Journal: :Proceedings of the Royal Society of Medicine 1964

Journal: :Environmental entomology 2010
Kaushalya G Amarasekare Catharine M Mannion Nancy D Epsky

Three previously introduced parasitoids (Acerophagus papayae Noyes and Schauff, Anagyrus loecki Noyes and Menezes, and Pseudleptomastix mexicana Noyes and Schauff [Hymenoptera: Encyrtidae]) of the mealybug Paracoccus marginatus Williams and Granara de Willink (Hemiptera: Pseudococcidae) were studied for their host instar susceptibility and sex ratio, host instar selection, and interspecific co...

Journal: :journal of agricultural science and technology 2011
gh. akbarzadeh shoukat

grape berry moth, lobesia botrana (denis and schiff.) is a destructive pest of grapevine in orumieh (northwest, iran) vineyards. it is mainly controled through application of broad-spectrum insecticides, which can adversely affect vineyard ecosystem and consequently human health. since a first step in setting up an ipm program is to assess the biological control agents within the ecosystem, so ...

Journal: :Journal of nematology 1999
S Chen C D Reese

The effect of crop sequence on parasitism of second-stage juveniles (J2) of Heterodera glycines by Hirsutella rhossiliensis was investigated. Data were collected from plots of a long-term crop rotation experiment established in 1982. Crop sequences included (i) continuous monoculture of corn and soybean; (ii) annual rotation of the two crops; and (iii) 1, 2, 3, 4, or 5 years of each crop follow...

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