scholarly journals SEASONAL ABUNDANCE OF HORSE FLIES (DIPTERA, TABANIDAE) IN THE CHIRPAN EMINENCES, BULGARIA

2019 ◽  
Vol 17 (1) ◽  
pp. 34-41
Author(s):  
D. Ganeva ◽  
M. Kalmushka
Keyword(s):  
Abundant Species ◽  
Seasonal Abundance ◽  
Flight Period ◽  
Seasonal Activity ◽  
Horse Flies

The aim of the present study was to explore the seasonal activity of tabanids on the territory of the Chirpan Eminences, in Stara Zagora region, Bulgaria. The study was carried out during the flight period (May - September, 2010 - 2011). A total of 1034 specimens of tabanids from 23 species and 8 genera were collected and identified. The horse flies began flying during the second half of May and its flight period lasted until mid - September. The peak of seasonal abundance was observed during the first half of July. The most abundant species in the horse flies assemblages on the Chirpan Eminences were Tabanus quatuоrnotatus (35.30%), Tabanus tergestinus (28.05%) and Philipomyia graeca (10.93%). The largest number of specimens of T. tergestinus was collected during the peak of seasonal abundance of horse flies on the territory of the Chirpan Eminences.

scholarly journals Seasonal Activity of the Horse Flies (Diptera, Tabanidae) from the Central Balkan Mountains, Bulgaria

2020 ◽  
Vol 18 (4) ◽  
pp. 319-327
Author(s):  
D. Ganeva ◽  
Iv. Ivanov
Keyword(s):  
Abundant Species ◽  
Seasonal Abundance ◽  
Seasonal Activity ◽  
Horse Flies ◽  
Peak Abundance ◽  
Balkan Mountains

The seasonal activity of the tabanids (Diptera: Tabanidae) was studied from May to September (2010-2011) in three localities on the territory of the Central Balkan Mountains. A total of 2232 specimens from 25 tabanid species and 8 genera were collected and processed. The first horse flies emerge in the first half of May and the last specimens were collected until mid-September. The tabanids reached their highest peak abundance in the first half of July. The most abundant species of the tabanid assemblages in the Central Balkan Mountains were Tabanus tergestinus Egg. (56.73 %), Tabanus bromius L. (12.71 %) and Haematopota pluvialis L. (8.87 %). The largest number of specimens of T. tergestinus was collected during the peak of the seasonal abundance of horse flies on the territory of the Central Balkan Mountains.

HORSE FLIES AND DEER FLIES (DIPTERA: TABANIDAE) FEEDING ON CATTLE IN SOUTHWESTERN QUEBEC

1981 ◽  
Vol 113 (10) ◽  
pp. 883-886 ◽  
Author(s):  
David J. Lewis ◽  
Daniel J. Leprince
Keyword(s):  
Abundant Species ◽  
Flight Period ◽  
Horse Flies

AbstractFour species of each of the genera Chrysops, Hybomitra, and Tabanus were collected while feeding on cattle in southwestern Quebec; T. quinquevittatus accounted for 75% of the tabanids. The more abundant species had a flight period of at least 5 weeks. Nearly 90% of the specimens were positive for fructose as determined by the cold anthrone test.

scholarly journals Adult caddisflies (Trichoptera) attracted to artificial lights in the middle reaches of the Shinano River from 2005 to 2007

Zoosymposia ◽  
2011 ◽  
Vol 5 (1) ◽  
pp. 143-146 ◽  
Author(s):  
KIMIO HIRABAYASHI ◽  
GORO KIMURA ◽  
EISO INOUE
Keyword(s):  
Species Composition ◽  
Air Temperature ◽  
Large Scale ◽  
Abundant Species ◽  
The Other ◽  
Seasonal Abundance ◽  
Other Hand ◽  
The Mean ◽  
Summer Flood

The species composition and abundance of adult caddisflies attracted to the illuminated showcase of a vending machine set along the middle reaches of the Shinano River were investigated every Sunday night from April to November in 2005 to 2007. A total of 1,405 adult caddisflies was collected during the investigation periods. We identified a total of 13 species belonging to 11 genera of 8 families. The most abundant species was Psychomyia acutipennis (Ulmer 1908) each year. Psychomyia acutipennis adults were collected from mid-May to the beginning of October (the range of mean air temperature was 13.8 to 27.7°C), with its seasonal abundance divided into several peaks, i.e., the end of May, the beginning of June, and the end of August to the beginning of September in both 2006 and 2007. On the other hand, in 2005 when there was no large-scale summer flood and there were no marked abundance peaks. The present study suggests that the mean air temperature and summer floods impacted the seasonal abundance of P. acutipennis adults.

scholarly journals Seasonal Abundance of Psyllid Species on Carrots and Potato Crops in Spain

Insects ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 287 ◽  
Author(s):  
Antolínez ◽  
Moreno ◽  
Ontiveros ◽  
Pla ◽  
Plaza ◽  
...  
Keyword(s):  
Potential Risk ◽  
Sampling Methods ◽  
Abundant Species ◽  
Potato Industry ◽  
Seasonal Abundance ◽  
Candidatus Liberibacter Solanacearum ◽  
Fundamental Understanding ◽  
Candidatus Liberibacter ◽  
Potato Crops ◽  
Field Location

Psyllids (Hemiptera: Psylloidea) can transmit the phloem restricted bacterium ‘Candidatus Liberibacter solanacearum’ (Lso). In Europe, Lso causes severe losses to carrot and represents a threat to the potato industry. A rising concern is Lso transmission from carrot to potato and within potato, and this has driven the need for monitoring populations of psyllid species which could serve as vectors on both crops. This would provide a fundamental understanding of the epidemiology of Lso. Different sampling methods were used to survey populations of psyllid species in commercial carrot and potato fields in central and eastern mainland Spain from 2015 to 2017. Two psyllid species, Bactericera trigonica and Bactericera nigricornis were found on carrot and potato crops. In carrot fields the most abundant species was B. trigonica (occurring from crop emergence to harvest); whereas in potato crops the most abundant psyllid species was B. nigricornis. Depending on field location, the maximum psyllid populations occurred between June and October. Since B. nigricornis was found on both carrot and potato and is the only psyllid species able to feed and reproduce on both these crops in Europe, there is the potential risk of Lso transmission from carrot to potato.

Ecology of Dolichopodidae (Diptera) in a wetland habitat and their potential role as bioindicators

2011 ◽  
Vol 6 (1) ◽  
pp. 118-129 ◽  
Author(s):  
Ivan Gelbič ◽  
Jiří Olejníček
Keyword(s):  
Species Richness ◽  
Potential Role ◽  
Species Abundance ◽  
Abundant Species ◽  
Seasonal Activity ◽  
Wet Meadow ◽  
Emergence Traps ◽  
Abundance And Diversity ◽  
Pan Traps ◽  
Malaise Traps

AbstractEcological investigations of long-legged flies (Dolichopodidae) were carried out in wet meadow wetlands near České Budějovice, Czech Republic. Sampling was performed during the adult flies’ seasonal activity (March–October) in 2002, 2003 and 2004 using yellow pan traps, Malaise traps, emergence traps, and by sweeping. Altogether 5,697 specimens of 78 species of Dolichopodidae were collected, identified and analysed. The study examined community structure, species abundance, and diversity (Shannon-Weaver’s index - H’; Sheldon’s equitability index - E). Chrysotus cilipes, C. gramineus and Dolichopus ungulatus were the most abundant species in all three years. Species richness and diversity seem strongly affected by soil moisture.

scholarly journals Occurrence of Five Thrips Species on Flue-Cured Tobacco and Impact on Spotted Wilt Disease Incidence in Georgia

Plant Disease ◽  
1999 ◽  
Vol 83 (8) ◽  
pp. 765-767 ◽  
Author(s):  
R. M. McPherson ◽  
H. R. Pappu ◽  
D. C. Jones
Keyword(s):  
Disease Incidence ◽  
Abundant Species ◽  
Wilt Disease ◽  
Seasonal Abundance ◽  
Vector Species ◽  
Flower Thrips ◽  
Tomato Spotted Wilt ◽  
Tobacco Production ◽  
Thrips Species ◽  
Frankliniella Fusca

Thrips-vectored tomato spotted wilt tospovirus (TSWV) infection is a major constraint on tobacco production in Georgia. Flue-cured tobacco fields were surveyed throughout the season from 1989 to 1991 and 1996 to 1998 to determine spotted wilt disease incidence and seasonal abundance and species composition of thrips populations. Five species were commonly found that accounted for more than 95% of the 17,000 thrips collected, including Frankliniella fusca, F. occidentalis, F. bispinosa, F. tritici, and Limothrips cerealium. F. fusca, F. occidentalis, and F. bispinosa are vectors of TSWV. F. fusca was the most common foliage thrips collected during all years, except 1989, when L. cerealium was the most abundant species. During 1989 to 1991, 22 to 68% of the foliage and flower thrips identified were TSWV vector species. The 1996 to 1998 foliage collections had much higher percentages of vector species (95 to 97%). The 1996 flower samples also had a very high percentage of vector species (94%); however, the percentages were much lower in 1997 (3%) and 1998 (32%). A trend toward higher incidence of TSWV occurred during the last three seasons studied, when thrips vector species were more abundant.

THE SEASONAL ACTIVITY OF HEMATOPHAGOUS DIPTERA ATTACKING CATTLE IN INSULAR NEWFOUNDLAND

1985 ◽  
Vol 117 (8) ◽  
pp. 995-1006 ◽  
Author(s):  
John W. McCreadie ◽  
Murray H. Colbo ◽  
Gordon F. Bennett
Keyword(s):  
Total Sample ◽  
Blood Feeding ◽  
Seasonal Abundance ◽  
Seasonal Activity ◽  
Black Flies ◽  
Biting Midges ◽  
Predominant Species ◽  
Early Evening ◽  
Host Seeking ◽  
Major Pest

AbstractA cattle-baited (C-B) trap and a Trueman–McIver (T-M) segregating CO2 trap provided information on seasonal abundance, host-seeking activity, and blood-feeding of biting-flies near St. John's, Newfoundland. A total of 19 682 biting-flies (26 species) were collected (C-B trap = 11 407; T-M trap = 8275) from 26 May to 16 September 1982. Black-flies (Simuliidae) comprised 94.1% of the total sample (C-B trap = 10 747; T-M trap = 7773). Mosquitoes (Culicidae), biting midges (Ceratopogonidae), and tabanids (Tabanidae) comprised the remainder. Blood-fed flies represented 54.7% of the total catch in the C-B trap, but the proportion varied considerably among species. Black-fly activity was concentrated in June and July, though flies were also collected in May, August, and September. Prosimulium mixtum was the predominant species in June and Simulium venustum/verecundum complex was the major pest in July. Prosimulium mixtum was most active from mid-morning to late-afternoon, with little evening activity. Simulium venustum/verecundum complex showed 2 peaks of activity, one in the morning and another in the early evening. A few P. mixtum and S. venustum/verecundum complex were active after dark. Captures from the T-M and C-B traps were compared to test the reliability of the T-M trap as an indicator of activity of biting-flies attracted to cattle. Significant correlations (P < 0.001) between the number of flies collected in the 2 traps were found for P. mixtum and S. venustum/verecundum complex. Remaining species were taken in numbers too low for analysis.

scholarly journals Species composition, seasonal abundance and population structure of chaetognaths in Admiralty Bay (Antarctic)

2016 ◽  
Vol 37 (2) ◽  
pp. 303-324 ◽  
Author(s):  
Luiza Bielecka ◽  
Bartłomiej Jerzak ◽  
Ilona Złoch
Keyword(s):  
Population Structure ◽  
Stage Iv ◽  
Abundant Species ◽  
Seasonal Abundance ◽  
Body Proportions ◽  
Comprehensive Description ◽  
Admiralty Bay ◽  
The Mean ◽  
The Antarctic ◽  
Research Period

Abstract Although chaetognaths inhabiting polar ecosystems are relatively well known, there are few reports on their functioning in the Antarctic coastal plankton community. The presented results provide the first comprehensive description of population structure of chaetognaths in the neritic zone west of the Antarctic Peninsula. The studies were performed on samples collected in Admiralty Bay, from December 1994 to June 1995. Following six chaetognath species were determined: Eukrohnia hamata, E. bathypelagica, E. fowleri, Pseudosagitta gazellae, P. maxima and Solidosagitta marri. The representatives of Eukrohnia were observed almost throughout the research period, whereas those of Pseudosagitta and Solidosagitta were found only during first four months of our investigation. Eukrohnia hamata showed a strong dominance in respect to abundance (max. 445 ind./1000 m3). The mean abundance of all taxa significantly fluctuated in the study period and across weeks. Generally, all species were represented by the first three maturity stages (I-III), individuals stage IV occurred sporadically, and mature specimens (stage V) were not recorded at all. Morphometric analysis of the most abundant species showed distinct differences in their total length and body proportions. Our findings may suggest that chaetognath populations in Admiralty Bay are migrant, dependent on the inflow of water from the Bransfield Strait, but to prove this statement further, round year study is necessary.

scholarly journals Morphological Identification of Horse Flies (Diptera: Tabanidae) and Estimation of their Seasonal Abundance in Al-Showak District, Gedaref State, Eastern Sudan

2017 ◽  
Vol 6 (2) ◽  
pp. 41 ◽  
Author(s):  
Hamid I. M. N. Croof ◽  
Mai M. Nour ◽  
Nahla O. M. Ali
Keyword(s):  
Morphological Features ◽  
The Other ◽  
Seasonal Abundance ◽  
Morphological Identification ◽  
Vector Species ◽  
High Quality ◽  
Trapping Method ◽  
Horse Flies ◽  
First Time ◽  
Eastern Sudan

<em>The aim of this study was to identify the tabanid flies in the Gedaref State, Eastern Sudan and to estimate their seasonal abundance. A number of 374 flies sample were collected by the trapping method in the period October 2014 to October 2015 and were sorted out using certain morphological features that include; size, head, thorax, wings, legs, antennae and abdomen. The observed features of 47 randomly selected samples were recorded and were used to create an identification key that can be used for future characterization and identification of any member of the Tabanidae family. More tabanids flies were collected during the wet (52.29%) than the dry season (47.71%). A number of 5 species of Tabanidae namely; Tabanus autumnalis (Szilády 1914); Tabanus leleani (Austen 1920); Atylotus pulchellus (Loew 1858); Hybomitra mendica (Villeneuve 1912) and Philoliche sp. were reported for the first time in the state of Gedaref. The method described here has advantages over the other methods of identification; that it is simple, costless, and requires no skillful person to perform. The collection procedure is very crucial, for the specimen must be of high-quality. This key will facilitate the recognition of the vector species and its possible role in the transmission of the parasitic and/or viral animals’ diseases in the area. </em>

The Hadeninae (Lepidoptera: Noctuidae) of Great Smoky Mountains National Park, USA

Zootaxa ◽  
2010 ◽  
Vol 2380 (1) ◽  
pp. 1 ◽  
Author(s):  
MICHAEL G. POGUE
Keyword(s):  
North Carolina ◽  
National Park ◽  
Abundant Species ◽  
General Distribution ◽  
Flight Period ◽  
Widespread Species ◽  
Great Smoky Mountains ◽  
Smoky Mountains ◽  
Elevational Range ◽  
Lepidoptera Noctuidae

Fifty-two species of Hadeninae are recorded from Great Smoky Mountains National Park, Tennessee and North Carolina, USA. Of the six hadenine tribes, five are present in the Park. They include 13 species of Orthosiini, one species of Tholerini, ten species of Hadenini, nine species of Leucaniini, and 19 species of Eriopygini. A total of 160 localities were collected across the Park. The three most diverse localities in the Park were Purchase Knob with 44 species, Big Cove Road with 32 species, and Foothills Parkway with 24 species. The most widespread species in the Park was Pseudorthodes vecors from 59 localities. The most abundant species was Polia detracta with 210 specimens. Images of adults, description/diagnosis, flight period, collected localities, abundance, elevational range, general distribution, and larval hosts are presented for each species.

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