Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 17

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The Polish panorpid fauna (Mecoptera: Panorpidae) consists of six species. Both the composition and distribution of the different species of this family in Poland is not sufficiently known. Particularly, there is a lack of data on this group from the area of Upper Silesia. In order to fill this gap, panorpids were collected in 2010 and 2012 from 16 sites in the area of Silesian Province. The presence of four species was recorded, the most numerous and common were Panorpa communis and P. Vulgaris. The presence of P. germanica was recorded for the first time, furthermore the presence of P. alpina was confirmed in the upland areas. The panorpid fauna requires further study, in particular it is necessary to determine the size, condition, structure and conservation status of particular populations of detected species.
There are 7 species of Lestidae family recorded in the area of Silesian Province. Among them 3 are thought to be rare: Sympecma paedisca, Lestes dryas and testes barbarus. S. paedisca is additionally protected by law in Poland. In the area of Silesian Province it was recorded for the first time in 1959 by Sawkiewicz and Żak in Maciejkowice locality, nowadays it is protected in form of small reserve called „Żabie Doły". The presence of this species in this locality was confirmed by the author of the following paper, who observed a female of S. paedisca in a bizzare tandem with a male of S. fusca. Besides that it was recorded in several new localities, on the contrary to other two species of Lestes genus. Generally they were recorded in smaller number and in less localities than it was in the past. There are many habitats in Silesian Province of types that are preferred by these species, yet a significant decline in their occurrence was observed. The reason for this situation remains unknown and needs to be studied during further research.
Eurasian Baskettail Epitheca bimaculata (CHARPENTIER, 1825) is widely distributed in northern and eastern Poland. Its distribu- tion becomes more local towards the west and south. It is the first record of this spe- cies in Silesian Province. The total number of 7 exuviae was collected on the shores of ponds located close to Mochała on the ter- ritory of the “Forests over Upper Liswarta” Landscape Park. The site ;lls the gap in its distribution in this part of Poland and con- firms its range limit.
In the area of districts: Chełm Śląski, Tarnowskie Góry, Ogrodzieniec and the city of Częstochowa, 've new sites were found in 2006–2008, which occurred to be the breeding and development sites of en- dangered dragon+y species in Poland, such as: Nehalennia speciosa, Somatochlora arctica, Cordulegaster boltonii, Aeshna subarctica elisabethae and Aeshna juncea. One of those sites, a sinkhole pond in Błę- dów near Chełm Śląski, is quite interesting for N. speciosa, A. subarctica and A. juncea were recorded all together. Another interest- ing site is in Pniowiec, where S. arctica and C. boltonii were found, which completed previous observations of the other dragon- +y species in this site: Brachytron pratense. Because of their natural aspects both sites are going to be included in the conservation system of Nature 2000 areas.
While the registration of dragonflies on man-made reservoirs of the Silesian Region took place, in 2006 there were recorded nu- merous males and less numerous females of Aeshna affinis. Single individuals have been reported in 1939 in Gwoździany and in 1966 in Ustroń. Since its last record Aeshna affi­nis has been noted again in 2005 in an old river bed of the River Odra River in Lasaki. It has been recorded on seven new sites in the next year. Most of those new sites were smali sinkhole ponds created by coal-mining. What is morę Aeshna affinis was recorded on a few natural sites too. While on natural sites there were 2-4 specimens recorded, on anthropogenic water bodies there were usu- ally about 20 individuals. Creating tandems indicated making attempts to inhabit anth­ropogenic water bodies by this species. The­re was another ąuite rare and stenothermic species - Crocothemis erythraea recorded on two sites together with Aeshna affinis. This species has been observed sińce 2002 in Odra River Valley, near the Southern bor- der of Silesian Region with Czech Republic. Nevertheless it was recorded for the first time in sinkhole ponds in 2006.
The inventory of dragon*ies was con- ducted on 244 sites in the Silesian Province in 2002–2012. The total number of 34 sites of Leucorrhinia pectoralis was found. This species is protected by law in Poland and a priority for the European program for hab- itats protection “Nature 2000”. The compar- ison of the present with historical data from the years 1958–1965 showed that L. pectoralis vanishes from peat bogs in this region. The reason for this situation is deteriorating condition of these habitats, mainly because of their desiccation and industrial pollution. It was noted however, that the species is present in a relatively high number on for- est sinkhole ponds emerging over coal ex- ploitation areas in the central, industrialized part of the province. Approximately 20% of investigated sinkholes presented conditions favorable for the reproduction and develop- ment of L. pectoralis. However, these habi- tats are unstable and do not sustain perma- nent presence of the species.
The following report concerns the first record and occurrence of an ornate cow tick (Dermacentor reticulatus) in the Silesian province. One female and one male were collected from a dog in the veterinary clinic in Racibórz, while in the vicinity of Żywiec one female tick was found also on a dog. Ticks collected in Racibórz are most probably part of the local fauna, while the specimen from Żywiec may have come from the Warsaw area, the source of the host. These findings confirm changes of European distribution recorded lately for this species and the role of humans in this process. However, they need to be supported by more thorough research involving collection by flagging and/or other hosts such as wild animals.
Niepołomice Forest is located about 20 kilometers east of Cracow (Małopolska province, southern Poland). Its natural and touristic values, as well as wide range of hosts occurring within indicate this to be an area of high risk of exposure to Ixodes ricinus and tick-borne diseases it transfers. I. ricinus is a common species in Poland and Europe. Its seasonal activity begins in Poland in the early spring, and ends with late autumn. A total number of 129 specimens of I. ricinus was collected by flagging in Niepołomice Forest. DNA was isolated by ammonia method from 30 randomly-selected individuals. PCR was used to detect tick-borne pathogens with primers specific for Anaplasma phagocytophilum, Borrelia burgdorferi sensu lato and Babesia sp. Molecular studies confirmed the presence of all three pathogens in I. ricinus. A. phagocytophilum was found in 76.7%, Babesia sp., 60%, B. burgdorferi s. l., in 3.3% of studied ticks. A. phagocytophilum co-infection with Babesia sp., was found in 46.7% of the specimens. A co-infection of all three tested pathogens was recorded in one case (3.3%). In Poland the problem of tick-borne diseases is a growing issue, therefore people residing in southern Polish touristic areas should be informed about the prevention and protection against ticks.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.