Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 12

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

Wyszukiwano:
w słowach kluczowych:  trapping
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
1

Effectiveness and applications of hair traps for the study of wild mammal populations

100%
Barja I., Navarro-Castilla A., Perez L.
Polish Journal of Ecology
|
2016
|
tom 64
|
nr 3
Direct studies of wild mammals are challenging due to the difficulty for capturing and handling and the associated high costs. Thus, noninvasive hair trapping for surveying mammal populations has been widely used in wildlife ecology and management. However, the efficiency of this method may differ depending on the animal species and other different factors. Here we aimed at evaluating the potential of hair tube traps for reliable detecting mammal species as well as to assess whether type of habitat, baits, hair trap´s size variables (length, diameter and time staying active) and position variables (height, altitude, orientation and location) influenced trapping success (i.e. obtaining hair samples or not) and effectiveness (i.e. percentage of successful sampling traps and the number of species detected) of hair traps. Hair traps were done with PVC tubes with adhesive tape inside, and they were placed at different locations where mammal cues were previously detected. Collected hairs were identified to species by macro and microscopic characteristics. We collected hairs in the 82% of the hair traps placed and we detected 9 species which represented 64% of the wild mammals potentially detectable with this method in the study areas. No one of the studied variables explained trapping success. However, trap´s diameter significantly influenced effectiveness, but contrary to expected, the larger traps presented lower sampling success and less species were registered. Position variables did not influence effectiveness of hair traps. Sampling success due to baits used was related to diet preferences of the species. Further, trap´s diameter and length, height, inclination and altitude influenced collecting hair samples from the different animal taxonomic orders. These results suggest that hair trapping can be used as a good tool for the study of wild mammals, but assumptions related to trap size and position variables should be taken into account to increase the effectiveness of this method.
2

Estimating density and home range size with removal grids: the rodents and shrews of Guam

84%
Barbehenn K. R.
Acta Theriologica
|
1974
|
tom 19
|
nr 14-25
3

Lure sticks as a method to detect pine martens Martes martes

84%
Burki S., Roth T., Robin K., Weber D.
Acta Theriologica
|
2010
|
tom 55
|
nr 3
223-230
Marten species are usually surveyed by trapping, snow tracking or cameratrapping with baits on trees. While testing the efficiency of a monitoring scheme for wildcats Felis silvestris silvestris in north-western Switzerland, we noticed that martens are attracted by lure sticks scented with valerian. On these sticks, the animals leaved some hairs that allowed us to identify the genus Martes by microscopic analysis. Additionally, the animal can be identified on pictures made by a camera trap posed close to the lure stick. In this paper, we compared the efficiency of different methods to find the most appropriate one in order to survey the pine marten Martes martes (Linnaeus, 1758) in Switzerland. For the method of valerian lure sticks we estimated a detectability of 0.08 per 14 days during the whole year. The detectability raised, when we applied American Hawbaker’s marten lure instead of the valerian tincture. In addition, the detectability was higher during the period April to June (p=0.2) compared to the whole year. If we identified the pine marten on the lure stick with pictures from the camera traps we reached a detectability of 0.21 during the whole year. Using only camera traps with baits on trees we could not take any picture of a pine marten.
4

Estimated population abundance of catchable signal crayfish [Pacifastacus leniusculus [Dana]] and spiny-cheek crayfish [Orconectes limosus [Raf.]] in lake Pobledzie [Northeastern Poland]

84%
Krzywosz T., Ulikowski D., Traczuk P.
Archives of Polish Fisheries
|
2006
|
tom 14
|
nr 1
In 2004, monitoring catches were performed on signal crayfish, Pacifastacus leniusculus (Dana) and spiny-cheek crayfish, Orconectes limosus (Raf.), in order to estimate the abundance of the catchable populations in Lake Pobłędzie (northeastern Poland). Catches were performed using 58 Evo traps along a part of lake with an area of 1.65 ha. In catches conducted on September 6 and 7, a total of 479 specimens of signal crayfish and 29 spiny-cheek crayfish were caught, marked, and released. After twelve days, repeat catches were conducted during which 476 specimens of signal crayfish, including 66 marked specimens, and 36 specimens of spiny-cheek, including 5 marked specimens, were caught. The average total length of the caught signal crayfish was 11.7 ± 1.06 cm (7.6 - 15.0 cm), while that of the spiny-cheek species was 9.3 ± 0.65 cm (7.5 - 10.7 cm). The average catchable population abundance per unit of studied surface area was calculated at 2094 specimens ha⁻¹ for signal crayfish and 127 specimens ha⁻¹ for spiny-cheek crayfish. Taking into consideration that this method underestimates the population abundance of crayfish from the lower size classes, it is estimated that the actual catchable population abundance in Lake Pobłędzie might be higher by about 25%.
5

Biosynteza kwasu cytrynowego z glicerolu przez drożdże Yarrowia lipolytica immobilizowane w chitozanie i poliwinyloalkoholu

67%
Rymowicz W.
Acta Scientiarum Polonorum. Biotechnologia
|
2008
|
tom 07
|
nr 3
6

Live-trapping small mammals under snow: a protocol for maximising captures and minimising mortality

67%
Rychlik L., Churchffig.,ref.ield S., Taylor J. R. E., Kardynia P., Oldakowski L.
Polish Journal of Ecology
|
2012
|
tom 60
|
nr 3
Difficulties in investigating shrews in the wild in winter, especially in trapping them and keeping them alive during live-trapping studies, have been the main reason for serious deficiencies in our knowledge of their ecology. We developed a live-trapping protocol which allowed us to maximise capture rates and minimise mortality of shrews. We used wooden box traps with a nest-chamber, which we set in plywood ‘chimneys’ with removable roofs. Chimneys facilitated suitable positioning of traps and protected them from being blocked by snow. This resulted in a high trappability (up to 20.2 shrews and 8.2 voles per 1000 trap hours), a large proportion of recaptures (most shrews were recaptured, often repeatedly) and a very low mortality rate (<0.09 shrews and 0 rodents per 1000 trap hours) despite sub-zero temperatures and deep snow cover. This allowed us to pursue an intensive live-trapping study, using the CMR-method, of shrews wintering in the Narewka river valley (north-east Poland). Because of the high trappability and minimal mortality, the presented protocol can be recommended to study winter ecology and conservation biology of such fragile and strictly protected small mammals as shrews.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Pheromone trapping of the double-spined bark beetle Ips duplicatus (Coleoptera: Curculionidae, Scolytinae): seasonal variation in abundance

67%
Holusa J., Grodzki W., Lukasova K., Lubojacky J.
Folia Forestalia Polonica. Series A . Forestry
|
2013
|
tom 55
|
nr 1
Ips duplicatus adults were sampled with pheromone-baited black window-slot traps (Theysohn) in 70- to 100-yearold Norway spruce (Picea abies) stands between 280 and 650 m a.s.l. in the eastern Czech Republic and southern Poland during 2000– 2010. Sets of 5–12 traps were placed about 20 m from the edge of the infested forest. Each trap was baited with a standard synthetic pheromone lure (ID Ecolure), and was setup 1.5–2.0 m above the ground. The objectives were to determine the relationship between the numbers of adults trapped in the overwintered generation and those in the offspring generation. According to data from 135 traps, the numbers of overwintered beetles captured in spring (April–June) were significantly higher than the numbers captured in summer (July–August), but the numbers of offspring beetles captured in summer were significantly correlated with the numbers overwintered beetles captured in spring. The spring captures can be used to estimate the threat caused by I. duplicatus during the whole vegetation season. The traps installed in summer should be used to determine the peaks in the bark beetle flight activity, thus enabling early identification of trees infested by I. duplicatus, especially inside stands.
8

Metoda odłowu owadów (Insecta) z drzew i krzewów z zastosowaniem wytwornicy dymu

67%
Pabisiak M.
Wiadomości Entomologiczne
|
2014
|
tom 33
|
nr 2
The structure and working principle of a smoke generator has been presented. It was compared with other methods used to catch insects (Insecta) from trees and bushes. Each method has its own advantages and disadvantages, but the most important is the effectiveness, which is expressed by the number of specimens and species caught. This study is the introduction to detailed studies on the effectiveness of the suggested method.
9

Response of the bank vole Clethrionomys glareolus [Schreber, 1780] to the odour and presence of heterospecifics as measured by scent marking behaviour and trapping in double traps in an alder forest

67%
Mroz I.
Polish Journal of Ecology
|
2007
|
tom 55
|
nr 3
The paper addresses the following issues: (1) does the bank vole response to odours of other rodent species by urine and faeces marking (2) does this reaction depend on the species, (3) does the amount of odour influence the marking, and (4) the response of bank voles to the presence of heterospecifics, and its comparison with the response of marking the odour deposited by these species. The study was conducted in a Ribo nigri-Alnetum swamp located in the Kampinos National Park, central Poland (52°20’N and 27°25’E). To observe scent marking, white paper sheets (15 × 21 cm) supplied with sponges (1cm³) soaked in odour of particular rodent species were exposed in the forest along a line ca 1200 m long. Odour donors were countryside species: a) phylogenetically close to the bank vole, such as Microtus agrestis (L.) and M. oeconomus (Pallas), b) sympatric, such as Apodemus flavicollis (Melchior) and A. sylvaticus (Melchior), or occupying a different habitat A. agrarius (Pallas), and allopatric species such as Meriones unguiculatus (Milne-Edwards), Mesocricetus auratus (Waterhouse), and Octodon degus (Bennet). Also sheets with the odour of bank vole and control sheets without odour were exposed. Marking was analysed basing on the number of marked sheets (marking extensity), and on the number of urine and faeces marks on sheets (marking intensity). During the three study years, a high marking extensity was observed for the odours of phylogenetically close species. The odours of sympatric species were marked less frequently and with a higher variability in successive years. The lowest marking extensity was found for geographically alien (allopatric) species. The mean number of marks per sheet did not differ significantly between the species. To examine the effect of odour quantity on marking, a line (ca 630 m long) made up of sheets provided with 1, 3, and 5 sponges with M. oeconomus and C. glareolus odour, and of control sheets was established. The increase in the number of sponges with heterospecific odour had no effect on the extensity and intensity of marking. Significant difference in marking extensity, but not in marking intensity, was found in the case of conspecific odour. The response of bank voles to the presence of heterospecifics was examined based on the number of captures in double-traps with a live individual. In the forest, a line of 30 double-traps placed every 10 m was established, containing single M. oeconomus, A. flavicollis, or C. glareolus. Bank voles were more often captured in traps with conspecifics than with heterospecofics. Thus, bank voles avoid encounters with heterospecifics but they do not avoid marking their odour (marking the heterospecific odour was not lower than marking conspecifics and control). It may suggest that under natural conditions, interspecific communication is largely mediated through olfactory cues.
10

Chrząszcze [Coleoptera] odłowione w ptasich budkach lęgowych w Kampinoskim Parku Narodowym

59%
Byk A., Mazur S., Smolenski M.
Wiadomości Entomologiczne
|
1998
|
tom 17
|
nr 1
59-60
11

Nowe dane o chrząszczach stonkowatych (Coleoptera: Chrysomelidae) odłowionych na obszarze Pienin

59%
Scibior R.
Wiadomości Entomologiczne
|
2013
|
tom 32
|
nr 2
The paper is a continuation of the research that was conducted in 2008 and presents the information about the localities of 20 leaf-beetle species that are new for the Pieniny Mountains. The beetles were collected mainly from the thermophilous plant communities located within the Park and also in a few protected areas around it.
12

Ciekawsze chrząszcze [Coleoptera] odłowione w rezerwacie dębowym „Zimna Woda” w Rogowie

34%
Borowski J., Kieszek C.
Wiadomości Entomologiczne
|
1999
|
tom 18
|
nr 2
125-126
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.