Wyniki wyszukiwania - BazTech

1

First record of Wiedemannia ljerkae Ivković et Sinclair, 2017 (Diptera: Empididae) from Albania with an updated checklist of aquatic dance flies occurring in the country

Słowińska Iwona, Jaskuła Radomir

Oceanological and Hydrobiological Studies

|

2020

|

Vol. 49, No. 4

421--427

EN

Wiedemannia ljerkae Ivković et Sinclair, 2017 is recorded from Albania for the first time (Sarandë District). The updated checklist of aquatic Empididae (Clinocerinae and Hemerodromiinae) from this country is provided. The potential diversity of the Albanian fauna of dance flies is discussed based on a comparison with faunas of neighboring countries.

2

Do abundance and percentage of dipteran larvae and Oligochaeta indicate low water quality in streams and lake littoral?

Timm Henn, Haldna Marina

Oceanological and Hydrobiological Studies

|

2019

|

Vol. 48, No. 4

415--429

EN

The presence of chironomids and/or oligochaetes is generally considered to be an indication of poor status of freshwater. Non-chironomid dipterans show unclear trends. The abundance and percentage of these groups are rarely used as potential indicators. We attempted to determine whether these metrics reveal freshwater quality in lowland streams and lake littoral (Northern Europe, Baltic ecoregion, Estonia). The water quality was assessed based either on the water itself or on macroinvertebrates, fish, macrophytes, phytobenthos (in streams only) and/or phytoplankton (in lakes only). As expected, the high abundance and high percentage of chironomids and ceratopogonids indicated low quality of water in lakes. The high percentage of chironomids indicated low water quality also in streams. The high percentage of oligochaetes indicated low water quality in lakes. However, their high abundance (but not the percentage) was unexpectedly a symptom of high water quality in streams and to a lesser extent in lakes. In these cases, oligochaetes were represented by rheophilic, rather than saprophilic species. The abundance of simuliids (but not the percentage) and the richness of dipteran families indicated high water quality in streams. We suggest that the obtained results will allow better use of the indicative potential of freshwater macroinvertebrates.

3

Biting midges (Diptera: Ceratopogonidae) in tree hole habitats in Slovakia

Oboňa J., Dominiak P.

Oceanological and Hydrobiological Studies

|

2014

|

Vol. 43, No. 1

61--65

EN

The water-filled tree hole fauna of biting midges (Diptera: Ceratopogonidae) in Slovakia is documented for the first time. Three Culicoides Latreille and two Dasyhelea Kieffer species were reared from these habitats. Epidemiological significance of C. obsoletus (Meigen, 1818) is briefly discussed.

4

Environmental agents in Lake Łuknajno (Poland) affecting the genome of Chironomus melanotus Keyl, 1961 (Diptera, Chironomidae) - a new species of Polish fauna

Jabłońska-Barna I., Szarek-Gwiazda E., Michailova P.

Oceanological and Hydrobiological Studies

|

2013

|

Vol. 42, No. 2

164-172

EN

Chironomus melanotus Keyl, a new species of Polish fauna, is described on the basis of cytogenetic characteristics. It belongs to the cytocomplex thummi with the chromosome set 2n = 8, chromosome arm combinations AB CD EF G and species-specific karyotype markers. Two types (somatic and inherited) of structural chromosome rearrangements in salivary gland chromosomes were identified in the species and somatic rearrangements (heterozygous inversions, deficiencies, deletions — Somatic index — 0.54) were observed for the first time in this species. In addition to those in the mosaic state, some genome alterations — trisomy and “B” chromosome, as well as larval malformations (10.27%) were detected for a first time. The malformations and somatic structural and genome aberrations may have been caused by different stress agents in the environment. Thus, we suggest that the high spectrum of somatic rearrangements observed in C. melanotus may indicate the existence of pollution (elevated Cd and Pb concentrations) in Lake Łuknajno (the study area) and perhaps trace metals and different chemicals produced by the Chara species.

5

The influence of temperature, precipitation and floods on the development of horse fly populations (Tabanidae) in the alluvial habitats of the Danube River in Croatia

Mikuska A., Krcmar S., Radović A., Mikuska T.

Polish Journal of Ecology

|

2012

|

Vol. 60, nr 2

395-406

EN

The paper describes impacts of the main ecological factors on the development of horse fly populations in the alluvial floodplains of the Danube River in the Pannonian plain. The study has been conducted from 2004.2009 in the four, water dependent, succession stages of alluvial forest communities of Kopacki rit wetlands. In total more than 23 000 adult horse flies of 22 species were collected by canopy traps that were placed annually during the flight season from May-September. The most abundant species during the study period were: Tabanus bromius with 47%, T. sudeticus with 17% and Haematopota pluvialis with 11%, respectively. Correlation analysis has confirmed the influence of the deviations from long-term average values in the temperature, precipitation and flood duration on the numbers of adult horse flies during the following year. A significant positive correlation has been found between spring and autumn precipitation and rainy seasons yielded more horse fly individuals the following year. A significant negative correlation has been found between the higher temperatures during summer, autumn and spring and the number of adults in the following year. The impact of the seasonal divergence from long-term average values in temperature, precipitation and flood on different species was not straightforward and different species have shown diverse correlation responses, either positive or negative.

6

Altitudinal gradients in a volcanic island : effect on biodiversity and species richness of the dipteran fauna

Ferreira T., Ribeiro E., Duarte-Rodrigues P. P., Boavida M.

Polish Journal of Ecology

|

2012

|

Vol. 60, nr 3

591-599

EN

Although research on environmental gradients is relatively common, the altitudinal gradient is one of the least explored. The discrepancies between earlier studies attributing highest diversity to lowest altitude and more recent studies where this altitudinal pattern is not maintained justify the pertinence of investigating the way diversity gradually changes with altitude. The studied altitudinal gradient is located inside the volcanic cone, on one of volcanic island Azores, and the investigated altitudes were 450, 600 and 800 meters a.s.l. Malaise traps were used to capture insects and Diptera were selected for this study. Application of the Zipt-Mandelbrot model to rank-abundance curves of Diptera sampled at three different altitudes, as well as analyses of richness, diversity and evenness, led to the conclusion that medium altitude was the stratum with the highest niche diversity, the highest specific diversity and the highest predictability. Non-metric multidimensional scaling allowed an excellent separation of the three altitudes sampled, suggesting that habitat characteristics significantly differ with altitude. The study, undertaken in a volcanic island of the Azores, Atlantic Ocean, will have heuristic interest to the scientific community in general and especially to those researchers studying environmental gradients. The results of this research will underpin further work on the insect biodiversity in the Azores Archipelago.

7

Influence of Dimilin WP on Characteristics of Earthworm Eisenia fetida Sav., Vermicomposting Organic Waste

Garczyńska M., Kostecka J.

Ecological Chemistry and Engineering. A

|

2011

|

Vol. 18, nr 11

1557-1564

EN

Vermicomposting of organic kitchen residues at a place where waste is produced can be conducted in small containers – an earthworm ecology box. The serious problem for the user can be the presence of Diptera. In laboratory experiment, the influence of the insecticide Dimilin 25 WP was tested on Eisenia fetida Sav. population characteristics, in addition to its influence on the rate of kitchen residues vermicomposting. The experiment showed that Dimilin limited the number of Dipteran larvae, when it was applied to ecological boxes (p < 0.001). After four months, the mean number of the E. fetida population in boxes with insecticide was only 1 % lower than in boxes without Dimilin, and the population biomasses did not differ statistically (p < 0.05). When no differences were present in number and biomass of mature and immature specimens, differences between laid cocoons were noticed, depending on Dimilin treatment (p < 0.001).

PL

Wermikompostowanie kuchennych odpadów organicznych na miejscu ich powstawania można prowadzić w małych pojemnikach - dżdżownicowych skrzynkach ekologicznych. Ponieważ problem dla ich użytkownika może stanowić obecność muchówek Diptera, dlatego w badaniach laboratoryjnych testowano wpływ ograniczającego je insektycydu Dimilin 25 WP na cechy populacji Eisenia fetida Sav. Badano również jego wpływ na tempo wermikompostowania wybranych odpadów organicznych. Wykazano, że zastosowanie Dimilinu 25 WP ograniczyło liczebność larw muchówek w skrzynkach ekologicznych (p < 0,001), nie zmieniając tempa wermikompostowania odpadów. Po czterech miesiącach średnia liczebność populacji E. fetida w skrzynkach z insektycydem była tylko o 1 % mniejsza niż w skrzynkach kontrolnych i biomasy populacji nie różniły się statystycznie (p < 0,05). Podczas gdy nie stwierdzono wpływu Dimilinu 25 WP na liczebność i biomasę osobników dojrzałych, wykazano różnice w obrębie składanych kokonów. Insektycyd redukował liczebność (p < 0,001) i sumę biomasy (p < 0,01) kokonów, różnicował także (p < 0,05) ich średnie masy (w pojemnikach z Dimilinem strategia życiowa dżdżownic była realizowana przez składanie kokonów cięższych).

8

Body size distributions of eastern European Diptera

Ulrich W., Szpila K.

Polish Journal of Ecology

|

2008

|

Vol. 56, nr 4

557-568

EN

Weight distributions of Eastern European Diptera (estimated from 7966 species body length data compiled from Stackelberg and Nartshuk 1969, 1970) differ from respective distributions of Coleoptera and Hymenoptera. Nematoceran size distributions were predominantly right skewed while the Brachycera tended to have symmetric and left skewed distributions. Skeweness of size distributions was for Nematocera positively and for Brachycera negatively correlated with genus mean body weight. Genera of smaller mean body weight were significantly species richer than larger sized genera. Our findings are consistent with an evolutionary model that assumes body size dependent speciation and extinction rates.

9

Spatial scaling laws and weight dependent distributions in guilds of diptera and parasitic hymenoptera

Ulrich W.

Polish Journal of Ecology

|

2001

|

Vol. 49, nr 1

59-66

EN

This paper tests the recent published synthetic theory of biodiversity of Ritchie and Olff (1999) using data on parasitic Hymenoptera and soil living Diptera. Neither the predicted size dependent size ratio patterns, nor the left skewed species number-size class ratios, nor right skewed species richness-productivity patterns were found. It is concluded that the basic assumptions of the theory (self similarity of habitat, food, and resource distribution over ecological relevant scales) is not applicable at fine scales and to guilds of higher trophic levels. Whether in general the assumptions are applicable to plants and phytophages has to be decided by further studies.