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Effect of the Geomagnetic Disturbance Storm Time (Dst) on Light Trapped Caddisfly (Trichoptera) Species

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Effect of the Geomagnetic Disturbance Storm Time (Dst) on Light Trapped Caddisfly (Trichoptera) Species Acta Scientific MICROBIOLOGY (ISSN: 2581-3226) Volume 4 Issue 8 August 2021 Research Article Effect of the Geomagnetic Disturbance Storm Time (Dst) on Light Trichoptera) Species Trapped Caddisfly ( Nowinszky L1*, Kiss O2, Puskás J1, Kiss M1, Barta V3 Received: and Szentkirályi F4 Published: 1Eötvös Loránd University, Savaria University Centre, Hungary, Europe June 09, 2021 Nowinszky L., 2Eszterházy Károly University, Hungary July 09, 2021 et al. 3Institute of Earth Physics and Space Science (EPSS), Hungary © All rights are reserved by 4Department of Zoology, Plant Protection Institute of the Hungarian Academy of Sciences, Centre for Agricultural Research, Hungary *Corresponding Author: Nowinszky L, Eötvös Loránd University, Savaria University Centre, Hungary, Europe. Abstract st Trichop- tera - This study deals with geomagnetic disturbance storm time (D ) in relation with the light-trap catch of eight caddisfly ( ) species. All the caddisfly species come from our own light-traps. The numbers of catching specimens by generationst were calcu index and lated relative catch (RC) values. These daily relativest catch data were assigned to the daily values of geomagnetic D index. Thest relative - catch data were divided accordance with the D index values. For each species, a relationship was found between the D the number of caddisflies captured. However, the results were not identical. Three types of variation were identified: ascending, as cendingKeywords: then descending, stdescending then ascending. Caddisflies; D Index; Light-traps Introduction studied the effect of geomagnetism It has been known for decades that different insect species per- Iso-Ivari and Koponen [4] - on the collection of light-traps by insects in the northernmost part - ceive geomagnetism and they are actually used it in their spatial of Finland. In their experiments, they used the K index values meas - orientation. Numerous of laboratory experiments and compre ured every three hours as well as the ΣK and δH values. A weak but perception orientation found that some species hensive studies are devoted to the physiological foundations of significant correlation was found between geomagnetic parame of termites (Isoptera Coleoptera Diptera - [1,2]. Becker [3] ters and specimens of different orders of captured insects. teroids (Orthoptera Hymenoptera) orient The relationship between geomagnetic indices and light trap- ), beetles ( ), flies ( ), orthop ), and hymenopterans ( according to the natural magnetic field. Way of their mobility is ping of insects was mostly studied by Russian and then Hungarian North-South, rarely East-West. Their original way of movement researchers. could be modified by artificial magnetic field. Citation: ., et al. “Effect of the Geomagnetic Disturbance Storm Time (Dst Trichoptera Acta Scientific Microbiology Nowinszky L ) on Light Trapped Caddisfly ( ) Species". 4.8 (2021): 11-16. Effect of the Geomagnetic Disturbance Storm Time (Dst) on Light Trapped Caddisfly (Trichoptera) Species 12 found a correlation between geo- - Pristavko and Karasov [5] the magnetic equator. It is computed once per hour based on meas (Yponomeuta rorrella Lepidoptera: Yponomeutidae magnetic C and ΣK values and the caught number of Spotted Ermel urements from a few stations at low latitudes (Honolulu, San Juan, - Hbn. ). Hermanus, and Kakioka [20]). The size of a geomagneticst storm is also established that - classified as moderate (−50 nTst > minimum of D > −100 nT), in mum of D In a later study Pristavko and Karasov [6] tense (−100st nT > minimum D st > −250 nT) or super-storm (mini at the time of magnetic storms ΣK had a greater influence on flying < −250 nT). While D is between +20 andst −20 nanoTesla activity of the above found species. that the number of light-trapped insects (nT) during quiet times. In our study we use the D index, what was - published by WDC Kyoto Observatory. Tshernyshev [7] significantly rose at the time of magnetic perturbations. Later, how so we performed our calculations with the 24-hour Dst Lepidoptera species increased those of other Lepidoptera and Dip- Most of the caddisfly species are active in the evening at night, ever, he reported while light-trap catches of some Coleoptera and tera species fell back during magnetic perturbations - index. found that the number of light-trapped beetles and bugs [8]. Tsherny All the caddisfly species come from our own light-traps. - shev [9] rose many times over at the time of geomagnetic storms in Turk We use Jermy type [17] light-traps in our catching. The light source of traps were 100 W normal bulbs at 2 m height. We used menia. found that the Large Yel- clear chloroform as killing material. Noctua pronuba Agrotis Baker and Mather [10] and Baker [11] exclamationis low Underwing ( L.) and Heart and Dart ( Modified Jermy type light-traps operated at Fülöpháza and Maroslele with compact fluorescent (Philips PL - T 42W/830/4p) L.) are able to orient themselves with both the Moon - and the Earth's magnetism, and even they are also able to integrate bulbs. The Fülöpháza light-trap was equipped with 3 baffles these two. around the bulb to increase the catch. The collecting funnel trans From our own studies we present the followings fers the insects to the killing bottle with a tail-pice. The traps were et al found a relationship between the geomag- used continuously throughout the night, from April to the end of Trichoptera October, during the insects’ flight period. Nowinszky . [12] netic H-index and the light-trap catch of fluvial species. The geographical coordinates of the catching sites and years can Agrotis Nowinszky and Puskás [13] also demonstrated the influence of the be seen in table 1. exclamationis geomagnetic H-index on the light-trap of Heart and Dart ( L.). In our further studies, we proved the effect of the The name of the species caught, the catching sites and years - geomagnetic M-index (developed on the territory of Hungary by with the numbers of individuals and the nights are shown in table the Geophysical Observatory of the Geophysical Research Labora 2.Methods - tory of the Hungarian Academy of Sciences) on the light trapping of different species: Nowinszky and Puskás [14] Number of Mac et al - Basic data were the number of individuals and species caught in rolepidoptera species catching in Szombathely Botanic Garden. - one night. In order to compare the differing sampling data, relative Puskás., . [15] demonstrated the light-trap catch of Microlepi et al found the same for Macrolepidoptera values were calculated from the number of individuals and species doptera species is influenced by the geomagnetic M-index. Now for each sampling night per year. The relative catch value (RC) was inszky . [16] species. - Materials defined as the quotient of the number of specimen caught during a sampling time unit (1 night) per the average nightly catch of in dividuals within the relevant sampling period. For example, when (disturbance Large disturbances of the Earth's magnetic field,st the so called the actual nightly catch was equal to the average nightly catch in geomagnetic storms, are definedst by changes in the D the relevant summer, the RC was 1 [18]. storm time) index. The D index determine the globally averaged change of the horizontal component of the Earth's magnetic field at Citation: ., et al. “Effect of the Geomagnetic Disturbance Storm Time (Dst Trichoptera Acta Scientific Microbiology Nowinszky L ) on Light Trapped Caddisfly ( ) Species". 4.8 (2021): 11-16. Effect of the Geomagnetic Disturbance Storm Time (Dst) on Light Trapped Caddisfly (Trichoptera) Species 13 Geographical Collection sites Years Latitude Longitude In this work, we chose a slightly different solution. Separately, all catch data by species were considered as a single sample and 1999 47°41›N E - 1 Bükk, Vöröskő Valley 1982, 1983 48°34’N 20°27’E thus relative catch values were calculated. This solution also made 2000 2 Duna River at Göd 19°08’ it possible to determine the effectiveness of trapping from the rel 2001 3 Tisza River at Szolnok 47°10’N 20°11’E ative catch values of each year and to compare the effectiveness of 4 Maroslele 46°16’N 20°21’E the years. We made divisions usingst Sturges’ method [19]. Finally, 5 Fülöpháza 2001, 2002 46°53’N 19°26’E we averaged within groups the D index and relative catch data 6 Tiszaroff 2002, 2003, 2004, 47°39’N 20°71’E pairs. In the figures are plotted the results. 7 Tiszaszőlős 2002, 2003, 2004, 47°55’N 20°25’E Results, Discussion and Conclusion 2005 2002, 2003, 2004, 8 Csongrád 46°71’N 20°14’E 9 Tiszakóród 2005 Our results are shown in figures 1-8. 2002, 2003, 2004, 48°10’N 22°71’E Table 1: The geographical coordinates of the collection sites and collection years in Hungary, Europe. Light-trap Number of Species stations Caddisflies Nights Ecnomidae Ecnomus tenellus 3, 6, 7, 8, 9 24,169 1,031 Rambur, 1842 D Neureclipsis bimaculata st Polycentropodidae Figure 1 Ecnomus tenellus 1,2,3,4,5,6,7,8,9 43,879 1,003 Linnaeus, 1758 connection with the D Hydropsyche instabilis : Light-trap catch of st Rambur, 1842 in Hydropsychidae 1 202 Curtis 1834 index (Final). Hydropsyche 19,853 contubernalis 370 2,3,5,6 33,759 Hydropsyche McLachlan, 1865 bulgaromanorum 574 2,3,5,6,7,8,9 39,226 Malicky, 1977 Brachycentrus Brachycentridae 2 132 subnubilus Limnephilidae 3,670 Curtis, 1834 Potamophylax 1 174 nigricornis Dst Leptoceridae 9,519 Pictet, 1834 Setodes punctatum 232 Figure 2: Light-trap catch of Neureclipsis bimaculata 1758 in connection with the geomagnetic D 2,3 5,937 st Linnaeus, Fabricius, 1793 Table 2: index (Final). The name of the species, the catching sites and the numbers of caddisflies and the nights. Citation: ., et al. “Effect of the Geomagnetic Disturbance Storm Time (Dst Trichoptera Acta Scientific Microbiology Nowinszky L ) on Light Trapped Caddisfly ( ) Species".
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