Search results for " Entomology"

An overview of the phylogeny of the families Lafoeidae and Hebellidae (Hydrozoa:Leptothecata): their composition and classification

2006

A cladistic analysis of the genera of the family ‘Lafoeidae’ was performed in order to investigate suprageneric classifications and the boundaries of the family, as well as to organise the available morphological data and discuss the possible evolution of some morphological characters. Our results suggest that the former ‘Lafoeidae’ must be separated into two families: the Hebellidae and the Lafoeidae (including the subfamilies Lafoeinae and Zygophylacinae).

Revision of coelotine spiders from Nepal (Araneae:Amaurobiidae)

2009

Coelotine spiders from Nepal are studied based on collections from the Himalaya Expeditions of J. Martens carried out in the years 1969, 1970, 1973, 1980, 1983, 1988 and 1995. In total, 38 Nepalese species of the genus Draconarius Ovtchinnikov, 1999 are described, including 35 new species. These are: D. beloniforis, sp. nov. (♂), D. bifarius, sp. nov. (♂), D. brevikarenos, sp. nov. (♀), D. capitellus, sp. nov. (♀), D. communis, sp. nov. (♂♀), D. condocephalus, sp. nov. (♂♀), D. confusus, sp. nov. (♂♀), D. contiguus, sp. nov. (♀), D. cylindratus, sp. nov. (♀), D. dapaensis, sp. nov. (♂), D. distinctus, sp. nov. (♂♀), D. dorsicephalus, sp. nov. (♂♀), D. gorkhaensis, sp. nov. (♂♀), D. gurkha (…

Proceso de competencia larvaria en Drosophila : supervivencia, dinámica de mortalidad y tiempo de desarrollo

1987

Estudio del modo de acción de las proteínas insecticidas de Bacillus thuringiensis en distintos insectos plaga

1995

External and internal elimination of supernumerary larvae in the whitefly parasitoid Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae)

2008

Abstract The solitary parasitoid Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae) is one of the key biological control agents of the whitefly Bemisia argentifolii Bellows & Perring, also known as B. tabaci (Gennadius) B-biotype (Homoptera: Aleyrodidae). We present new information on its biology, and particularly about larval elimination during the first instar in cases of superparasitism. For the first time, physical elimination of supernumerary larvae was observed, both outside and inside the host. These findings are documented with confocal microscopy images and video recordings. We observed more than 350 B. argentifolii nymphs, parasitized with one, two or more than two larvae. Physi…

40 lat minęło. Rubinowy jubileusz Sekcji Dipterologicznej Polskiego Towarzystwa Entomologicznego

2023

40 years have passed. Ruby jubilee of the Dipterological Section of the Polish Entomological Society. The illustrated notes on the Dipterological Section of the Polish Entomological Society are presented. The idea of establishing the Section emerged in 1980 in Cracow, formally implemented a year later. Each year members meet at a scientific symposium in various places of Poland. The group releases international journal Dipteron, and in 2013 proclaimed World Dipteran Day.

Data from: Symbiotic polydnavirus and venom reveal parasitoid to its hyperparasitoids

2018

Symbiotic relationships may provide organisms with key innovations that aid in the establishment of new niches. For example, during oviposition, some species of parasitoid wasps, whose larvae develop inside the bodies of other insects, inject polydnaviruses into their hosts. These symbiotic viruses disrupt host immune responses, allowing the parasitoid’s progeny to survive. Here, we show that symbiotic polydnaviruses also have a downside to the parasitoid’s progeny by initiating a multi-trophic chain of interactions that reveals the parasitoid larvae to their enemies. These enemies are hyperparasitoids that use the parasitoid progeny as host for their own offspring. We found that the virus …

The carabid Pterostichus melanarius uses chemical cues for opportunistic predation and saprophagy but not for finding healthy prey

2017

The sentinel prey method can quantify predation pressure in various habitats. Real prey is assumed to more realistically mimic the predator experience but the predator can rarely be identified. Artificial prey made of plasticine may lack real chemical cues, but provides information about predator identity. However, the relationship between predation pressure registered by artificial versus real prey is not clear. We tested the relative attractiveness of artificial caterpillars, and intact, wounded, or dead larvae of the cabbage moth (Mamestra brassicae) for the carabid predator Pterostichus melanarius Illiger (Coleoptera: Carabidae). P. melanarius adults were attracted to dead caterpillars …

Analysis of Prey Composition in Eurasian Reed Warblers' Acrocephalus scirpaceus Droppings at Four Breeding Sites in Italy

2022

Our aim was to investigate the among-populations diversity of prey composition in Eurasian Reed Warblers’ diets via their droppings, both to assess the ecological validity of this sampling method and to test whether the prey species most abundant in fecal samples were also the most present in the Italian study site. We collected fecal samples at four sites throughout Italy, for a total of 144 samples. Within reedbeds, the breeding habitat of the Eurasian Reed Warbler, we also collected arthropods by carrying out entomological sweepings at one of the study sites. Within the fecal samples, we identified dozens of prey species, belonging mainly to Araneae, Coleoptera, Diptera, Hymenoptera and …

Czas zgonu w kontekście nauk penalnych

2016

Celem pracy jest przybliżenie prawnikom trudu prac, jakie musi wykonać medyk sądowy szacujący czas zgonu. Ma to pomóc w minimalizacji niezrozumienia owej czynności w relacjach przedstawicieli tych dwóch grup zawodowych w procesie karnym. Opis czynności, jakie kolejno następują podczas próby ustalenia interwału pośmiertnego, ma pomóc w zrozumie-niu poziomu komplikacji w stosunku do istniejących regulacji prawnych i możliwości technicz-nych. Innym aspektem jest podkreślenie powagi owych czynności i ich doniosłości w kontekście prawa karnego. W pracy podjęto też próbę zestawienia różnych najważniejszych metod szacowa-nia czasu zgonu – ma to pomóc w ocenie możliwości technicznych, których niezn…