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Search Results: 1 - 10 of 98 matches for " Arthropods "
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Terrestrial arthropods from tree canopies in the Pantanal of Mato Grosso, Brazil
Marques, Marinêz Isaac;Adis, Joachim;Santos, Geane Brizzola dos;Battirola, Leandro Dênis;
Revista Brasileira de Entomologia , 2006, DOI: 10.1590/S0085-56262006000200007
Abstract: terrestrial arthropods from tree canopies in the pantanal of mato grosso, brazil. this study represents a contribution to the knowledge of the diversity of arthropods associated to the canopy of vochysia divergens pohl (vochysiaceae). three trees individuals were sampled during two seasonal periods in this region: a) by spraying one tree canopy during high water (february); b) by fogging two tree canopies during low water (september/october). the 15,744 arthropods (183.2±38.9 individuals/m2) obtained from all three trees (86 m2) represented 20 taxonomic orders, 87.1% were insecta, and 12.9% arachnida. the dominant groups were hymenoptera (48.5%; 88.9 individuals/m2), mostly formicidae (44.5%; 81.4 individuals/m2), followed by coleoptera (14.0%; 25.5 individuals/m2) and araneae (10.2%; 19.5 individuals/m2), together representing 62.5% of the total catch. fourteen (70%) of all orders occurred on three trees. dermaptera, isoptera, neuroptera, odonata, plecoptera and trichoptera were collected from only one tree. of the total, 2,197 adult coleoptera collected (25.5±11.3 individuals/m2), 99% were assigned to 32 families and 256 morphospecies. nitidulidae (17.9% of the total catch; 4.6 individuals/m2), anobiidae (16.7%; 4.3 individuals/m2), curculionidae (13.2%; 3.4 individuals/m2) and meloidae (11.4%; 2.9 individuals/m2) dominated. the communitiy of adult coleoptera on v. divergens indicated a dominance of herbivores (37.8% of the total catch, 127 spp.) and predators (35.2%, 82 spp.), followed by saprophages (16.2%, 32 spp.) and fungivores (10.8%, 15 spp.). the influence of the flood pulse on the community of arboreal arthropods in v. divergens is indicated by the seasonal variation in evaluated groups, causing changes in their structure and composition.
Detection of ectoparasites in wild birds evaluated in Medellin (Colombia)
Parra-Henao,Gabriel; Alarcón Pineda,Erika P; López Valencia,Gustavo; Ramírez Monroy,Diber M; Jaramillo Crespo,Gloria E;
Revista Colombiana de Ciencias Pecuarias , 2011,
Abstract: some arthropod species are vectors of diseases to human's beings, domestic and sylvatic animals acting as biological or mechanical vectors of important pathogens. they produce direct damage due to feeding habits and attachment to different parts of animals and humans bodies. the aim of this study was to identify different species of ectoparasites from wild birds located at "centro de atención y valoración de fauna silvestre del area metropolitana del valle de aburrá". from october 2006 to november 2007 a descriptive longitudinal study was done in 43 birds infested with ectoparasites. a total of 202 ectoparasites belonging to diptera and phthiraptera (insecta) orders and parasitiformes mites (arachnida: acari) were found.the phtiraptera order shows the highest diversity with 18 species all of them belonging to mallophaga group. from diptera order, one specie was identified and ten larvae from muscidae family was identified too, from acari three genera of the astigmata and mesostigmata soborders was identified. the results of this study allow us to expand the host range of bonnetella genera to ramphastos citroelaemus specie. also the presence of menacanthus eurysternus and colpocephalum turbinatum is registered in pelecanus occidentalis and buteo platypterus. the development of microbiological and parasitological studies to identify pathogen species in these ectoparasites is recommended to establish disease transmission risk and prevention and control strategies of zoonotic diseases.
Risposte comportamentali di Crocidura leucodon (Hermann, 1780) (Insectivora, Soricidae) ai meccanismi antipredatori di alcuni Artropodi
Teresa Bonacci,Gaetano Aloise,Pietro Brandmayr,Mara Cagnin
Hystrix : the Italian Journal of Mammalogy , 2004, DOI: 10.4404/hystrix-15.1-4328
Abstract: Behavioural responses of Crocidura leucodon (Insectivora, Soricidae) to Arthropod preys with various antipredatory defenses Two wild specimens of Crocidura leucodon have been tested in laboratory to study the predatory behaviour towards different types of preys: Arthropods with chemical defenses and aposematic colours (Brachinus sclopeta, B. crepitans, B. peregrinus, Chlaenius chrysocephalus, Anchomenus dorsalis) and less protected species (es. Scybalicus oblongiusculus, Parophonus hispanus, Steropus melas, Calathus montivagus). In the first part of the experiment satiated Crocidura specimens preyed only on non protected species. In the second part satiated and food deprived Crocidura began to prey, although with less intensity, also on highly protected species. The shrews adopted "new" attack modes to avoid chemical injuries.
The Increase of Arthropods Biodiversity in Paddy Field Ecosystem Managed by Using Integrated Pest Management at South Borneo
Samharinto,Abdul Latief Abadi,Bambang Tri Raharjo,Hakimah Halim
Journal of Tropical Life Science , 2012,
Abstract: We have studied the arthropods biodiversity in two paddy field ecosystems, namely, paddy field ecosystem using Integrated Pest Management (IPM) system and non-IPM paddy field ecosystem. This study was conducted from April 2011 – November 2011 in three locations, that is, Pasar Kamis village and Sungai Rangas village in Banjar regency, and Guntung Payung village in Banjarbaru city, South Borneo Province. In this study, we used insect nets, yellow sticky traps, light trap and pitfall trap to get the sample or catch the arthropods in one period of planting season. The arthropods caught were then classified into some classes: pest (herbivore), natural enemy (parasitoid and predator), and other arthropods. After that, the Species Diversity Index was determined using its Shannon-Wiener Index (H’), Evenness (e), Species Richness (R), and Species Similarity Index (IS). The sum of arthropods which have the characteristic of pest and parasitoid were higher in the IPM paddy fields than in the non-IPM paddy fields, and the sum of other arthropods were the same. The highest H’ and e values were in the IPM paddy field in Pasar Kamis village. The IS value for each three locations were 77.5% in Pasar Kamis village, 93.42% in Guntung Payung village, and 78.76% in Sungai Rangas village.
Pigmenta??o exógena em pododáctilos simulando isquemia de extremidades: um desafio diagnóstico provocado por artrópodos da classe Diplopoda ("piolhos-de-cobra")
Lima, Carlos Alberto Jatobá;Cardoso, Jo?o Luiz Costa;Magela, Ant?nio;Oliveira, Francisco G. M. de;Talhari, Sinésio;Haddad Junior, Vidal;
Anais Brasileiros de Dermatologia , 2010, DOI: 10.1590/S0365-05962010000300018
Abstract: a 24 year-old patient reported having stepped on a millipede. when examined the patient presented cyanotic and erythematous macules on the first three toes of his right foot, and also complained of local pain and paresthesia, with palpable arterial flows. millipedes are cylindrical segmented arthropods that when threatened form into curls and release quinones and other irritant and pigmentary substances. the cyanotic color reminds ischaemic tissular distress fact that may confuse professionals in emergency rooms when the clinical report is unclear.
Arthropod succession on pig carcasses in southeastern Nigeria
Ekanem, M.S.;Dike, Mike C.;
Papéis Avulsos de Zoologia (S?o Paulo) , 2010, DOI: 10.1590/S0031-10492010003500001
Abstract: the domestic pig (sus scrofa) was used as a model to study arthropod succession on carcasses under tree shade and out of shade in southern nigeria. carcass decomposition took longer periods under tree shade than in exposed sites, at 24.5 and 16.5 days, respectively. four decomposition stages - fresh, bloated, decay, and dry - were observed. no significant variabilities were recorded in the types and patterns of infestation of the carcasses by arthropods in both locations. four classes of arthropods - insecta, arachnida, diplopoda and crustacea - were recorded. the class insecta dominated the total arthropods collected with 24 families, and formed 94% of the catches. the other three classes each had one family represented, and contributed only 2% of the total catches. the calliphorids, a phorid, and sarcophagids arrived and bred on the carcasses only a few hours after death of the pigs. families of coleopterans came during the bloated stage, and fed on the immature dipterous maggots and carrion materials. the ants (hymenoptera) came in large numbers to eat the carcasses, and also preyed on all other fauna of the food resource. a muscid and a stratiomyiid, bred on the carcass as to the decay stage. other insects and arthropods arrived mostly during the decay stage to feed on the carcasses. species richness on the carcasses peaked during the decay stage.
Efeito de milho Bt sobre a entomofauna n?o alvo
Martins,Filomena; Vieira,Maria Margarida; Lavadinho,António Manuel Pereira; Mendon?a,Teresa Rita;
Revista de Ciências Agrárias , 2008,
Abstract: in order to study the impact of transgenic maize on beneficial arthropods, two varieties of maize bt (compa cb and elgina) and the normal ones (dracma and cecília) were sown. the trials were carried out, in escaroupim, ribatejo, from 2002 to 2004. the surveys were done by using a cordless hand vacuum machine, every 15 days, during the growing season. the results showed no significant differences between arthropods caught in maize bt and the normal one. the beneficials with the highest numbers caught during the three years were anthocoridae, hymenoptera and aranea were the first, second and third most representative groups of beneficial arthropods during the three years.
Acidentes por centopéia notificados pelo "Centro de Informa??es Toxicológicas de Belém", num período de dois anos
Barroso, Eduardo;Hidaka, Alexandre Shigemi Vicente;Santos, Amanda Xavier dos;Fran?a, Joana D'arc Matos;Sousa, Adriana Maria Brito de;Valente, Jorgianne Rodrigues;Magalh?es, Andréa Franco Amoras;Pardal, Pedro Pereira de Oliveira;
Revista da Sociedade Brasileira de Medicina Tropical , 2001, DOI: 10.1590/S0037-86822001000600005
Abstract: centipedes are arthropods of the class chilopoda. the objective of this work was to study the incidence of accidents involving centipedes at "centro de informa??es toxicológicas de belém" (cit-belém) over a two-year period. seventy-six patients were studied from march 30, 1998 until march 30, 2000. centipede accidents occurred in 16.8% of all accidents by venomous animals at centro de informa??es toxicológicas de belém; compared to snake accidents, 44.4 % and scorpion accidents, 20.5%. the majority of cases occurred in the residence (86.8%). the most important age group was 20-49 years old (64.4%). the part of human body mostly affected was the superior members (47.4 %). local pain and edema were found in 95.8% and 52.1% of the patients, respectively. treatment was symptomatic. healing occurred in 94.7%, although the outcome of 5.3% of cases was unknown. centipede accidents are a benign accident, occurring within the residence and treatment consists of measures to decrease the pain.
SURVEILLANCE OF VECTOR PROBLEMS ON A NATIONAL BASIS AS EXAMPLIFIED BY IRAN
M.A. Faghih
Iranian Journal of Public Health , 1972,
Abstract: The significance and impact of the arthropods and other vectors, as diseases transmitting agents and human pests, on human health need not to be over emphasized. The Increasing changes of the total environment, accompanied with the climates in the ecology of vectors have made such impact a more complex and dynamic one. To meet the problems caused by these changes, a quantitative and qualitative knowledge of vector characteristics such as, presence or absence, species, densities, distribution and dispersal biting habit, infection rate, etc. are necessary. This information should be available on local, region, national and international basis. In the present paper, various aspects of such intonation system (surveillance) including network, personnel, methods etc., are reviewed in general. Examples from Iranian experiences in the cases of malaria vectors sandfiles, fleas and snails are also presented and illustrated.
Survey of Arthropod Associated with Refuse Disposal Sites in Ijebu-Ode, Ogun State
F.M. Banjo,A.D. Banjo,B.T. Fasunwon
Current Research Journal of Biological Sciences , 2012,
Abstract: The aim of the study is to investigate the abundance of arthropod pests and its diversity at different refuse disposal sites in Ijebu Ode. A survey of some refuse dumps for the presence of arthropod associated with them was carried out in Ijebu-ode Local government Area, of Ogun state. The refuse dumps were randomly selected based on their location within the town, these included Ikangba housing Estate, Wasimi, Olisa, Mobalufon and Sabo areas. Different methods were used for the collection of these Arthropods: such as Handpicking, water traps, sweep net and sticky traps. Arthropods collected included members of the family Muscidae, Culicidae, Blattidae, Scolopendridae, Diplopodae, Gryllidae and Sparassidae. Musca domestica (Houseflies) were the most abundant (31.31%), while the least were Otiorrhynchus sulcatus (Coleoptera) (1.01%). Aedes egypti and Culex restuans (Diptera) accounted for 12.12%, Blatta lateralis (Blattodea) (10.61%) and Chromatopelma yaneopubescens (Araneae) (13.64%).The relative occurrence of these arthropods suggested the possibility of some vector borne diseases in Ijebu-Ode environs, hence the need for proper disposal of refuse to avert an epidemic status.
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