Browsing by Area "Biologija / Biology (N010)"
Now showing 1 - 20 of 260
Results Per Page
Sort Options
Publication 2016 metų paukštis – juodasis čiurlysjournal article ;Raudonikis, Liutauras ;Kirstukas, Mindaugas ;Karlonas, MariusPaukščiai : norintiems stebėti ir pažinti. Kaunas : Lututė, 2016, Nr. 1 (29)., p. 8-111 Publication Akvaponikos plėtros skatinimas Lietuvojeconference paper; ; Jūros ir krantų tyrimai 2023 : 15-oji nacionalinė jūros mokslų ir technologijų konferencija : konferencijos medžiaga : 2023 balandžio 19-21 d., Nida3 - book part
;Leppäkoski, Erkki ;Gollasch, StephanInvasive aquatic species of Europe : distribution, impacts and management. Dordrecht : Springer, 2002. ISBN 9789048161119., p. 1-6In this paper we review from a historical perspective some of the human activities that have facilitated the potential of alien species from all continents but Antarctica to become established in coastal and inland waters of Europe.1 - research article
; ; ;Miceikienė, Ilona TeodoraMorkūnienė, KristinaMedycyna weterynaryjna = Veterinary medicine-science and practiceThe aim of the experiment was to determine the RYR1 genotype and to analyse the distribution of osteochondrosis (OC) in wild boars from different regions of Lithuania. Hair and bone samples were collected from wild boars of various sexes and ages that had been shot during hunting season. Genomic DNA was extracted from hair roots. The RYR1 gene was analysed with the PCR-RFLP method, using specific primers and restriction enzymes Alw211 and Hin61. Only one C allele (q = 1.00) and CC genotype of the RYR1 gene were identified. Thus 138 genotyped wild boars were stress-resistant with both dominant alleles intact (no mutation). OC was measured by the cut surface of the distal femur and humerus. The prevalence of OC among the 34 wild boars tested was 20.6%. 5 animals (14.7%) had OC lesions in the hind legs and 2 animals (5.9%) had them in the front legs. OC affected leg joints more often in adult females (third-years and older), but this dependence was not significant (p > 0.05).4Scopus© Citations 1WOS© IF 0.28WOS© AIF 1.407Scopus© SNIP 0.228 - research article
;Kleinschmidt, Birgit ;Burger, Claudia ;Bustamante, Paco ;Dorsch, Monika ;Heinänen, Stefan; ;Žydelis, Ramūnas ;Nehls, GeorgQuillfeldt, PetraMarine biology. Heidelberg : Springer, 2022, vol. 169, no. 9, art. no. 114., p. 1-19In this study, the annual movements of a seabird species, the red-throated diver ( Gavia stellata ), were investigated in space and time. Between 2015 and 2017, 33 individuals were fitted with satellite transmitters at the German Bight (eastern North Sea). In addition, stable isotope analyses of feathers (δ 13 C) were used to identify staging areas during the previous moult. The German Bight is an important area for this species, but is also strongly affected by anthropogenic impacts. To understand how this might affect populations, we aimed to determine the degree of connectivity and site fidelity, and the extent to which seasonal migrations vary among different breeding locations in the high Arctic. Tagged individuals migrated to Greenland ( n = 2), Svalbard ( n = 2), Norway ( n = 4) and northern Russia ( n = 25). Although individuals from a shared breeding region (northern Russia) largely moved along the same route, individuals dispersed to different, separate areas during the non-breeding phase. Kernel density estimates also overlapped only partially, indicating low connectivity. The timing of breeding was correlated with the breeding longitude, with 40 days later arrival at the easternmost than westernmost breeding sites. Repeatability analyses between years revealed a generally high individual site fidelity with respect to spring staging, breeding and moulting sites. In summary, low connectivity and the distribution to different sites suggests some resilience to population decline among subpopulations. However, it should be noted that the majority of individuals breeding in northern Russia migrated along a similar route and that disturbance in areas visited along this route could have a greater impact on this population. In turn, individual site fidelity could indicate low adaptability to environmental changes and could lead to potential carry-over effects. Annual migration data indicate that conservation planning must consider all sites used by such mobile species.4Scopus© Citations 2WOS© IF 2.4WOS© AIF 3.1Scopus© SNIP 0.816 1 Publication Aplinkos taršos sunkiaisiais metalais įvertinimas biotestavimo metodu[Environment pollution with heavy metals assessment by biotesting method]research article ;Dabkutė, SandraJūra ir aplinka : jūrų technologijos ir gamtos mokslai. , 2010, Nr. 1., p. 7-131 Publication Aplinkos temperatūros įtaka Ponto-Kaspijos aukštesniųjų vėžiagyvių ir žuvų lervų mitybos intensyvumui[Environmental temperature influencing the feeding rate of Ponto-Caspian higher crustaceans and fish larvae]research articleJūra ir aplinka : jūrų technologijos ir gamtos mokslai. , 2003, Nr. 1., p. 63-68This paper discusses about the environmental temperature influencing the feeding rate of Ponto-Caspian higher crustaceans and fish larvae. The following species of hydrobionts were investigated: mysids, gammarus, fish larvae, perch, three-spined stickleback and others.1 - research article
;Cardeccia, Alice ;Marchini, Agnese ;Occhipinti-Ambrogi, Anna ;Galil, Bella ;Gollasch, Stephan; ; ; Ojaveer, HennEstuarine, coastal and shelf science. London : Academic Press, 2018, vol. 201., p. 17-28in European Seas: Baltic Sea, Western European Margin of the Atlantic Ocean and the Mediterranean Sea were examined. Data for nine biological traits was analyzed, and a total of 41 separate categories were used to describe the biological and ecological functions of these NIS. Our findings show that high dispersal ability, high reproductive rate and ecological generalization are the biological traits commonly associated with MWNIS. The functional groups that describe most of the 68 MWNIS are: photoautotrophic, zoobenthic (both sessile and motile) and nektonic predatory species. However, these ‘most widespread’ species comprise a wide range of taxa and biological trait profiles; thereby a clear ”identikit of a perfect invader” for marine and brackish environments is difficult to define. Some traits, for example: “life form”, “feeding method” and “mobility”, feature multiple behaviours and strategies. Even species introduced by a single pathway, e.g. vessels, feature diverse biological trait profiles. MWNIS likely to impact community organization, structure and diversity are often associated with brackish environments. For many traits (“life form”, “sociability”, “reproductive type”, “reproductive frequency”, “haploid and diploid dispersal” and “mobility”), the categories mostly expressed by the impact-causing MWNIS do not differ substantially from the whole set of MWNIS.1Scopus© Citations 52WOS© IF 2.611WOS© AIF 2.286Scopus© SNIP 1.206 - research article
; ; ; Fishes. Basel : MDPI, 2022, vol. 7, iss. 1, art. no. 9., p. 1-17Fisheries in the Curonian Lagoon (1584 km2 coastal lagoon in South-East Baltic) can be classified as artisanal, small-scale, multi-species, and multi-gear. Such types of fisheries are characterised as data-poor and require appropriate investigation methods. We used CMSY (version CMSY_2019_9f. R) to assess maximum sustainable yield (MSY) and related indicators for freshwater bream, roach, pike-perch, and European perch. A decline in pike-perch and roach was identified, while the stocks of freshwater bream and European perch were sustained. As the CMSY model does not consider the impact of environmental factors, the decline in roach stock may be attributed to the increase in salinity rather than to overfishing. In the case of freshwater bream and pike-perch, the method cannot consider the increase of the percentage of small-sized fishes in catches due to the allowance of low-selectivity gears in the fishery. Additionally, in the case of the pike-perch, the model does not take into account the interannual fluctuations in the stock-recruitment system. The assessment of the European perch stock can be considered to be good. However, the accuracy of CMSY is limited, and it should be used for fisheries management only in combination with other methods.4Scopus© Citations 5WOS© IF 2.3WOS© AIF 3.05Scopus© SNIP 0.943 Publication Atlanto menkių būrių struktūra Baltijos jūros Lietuvos išskirtinės ekonominės zonos vandenyse[Atlantic cods shoals structure in Lithuanian exclusive economic zone of the Baltic Sea]research article; ; Jūra ir aplinka : jūrų technologijos ir gamtos mokslai. Klaipėda : Klaipėdos universiteto leidykla, 2012, Nr. 1 (21)., p. 51-58Šiame straipsnyje analizuojama Atlanto menkių būrių struktūra Baltijos jūros Lietuvos išskirtinės ekonominės zonos vandenyse. Duomenys menkių būrių analizei 2009–2010 m. surinkti traluojant dugniniais tralais 8 skirtinguose žvejybos kvadratuose. Nustatyta, kad vyraujančios menkių būrių žuvų rūšys yra strimelė ir brėtlingis. Įvairiarūšiai būriai sudarė 81 %, o vienarūšiai – 19 %.1 - conference paper
; Papildomosios ir alternatyviosios sveikatos priežiūra: fitoterapijos galia : mokslinė-praktinė konferencija, skirta E. Šimkūnaitės 100-osioms gimimo metinėms paminėti. Klaipėda : Klaipėdos universiteto leidykla, 2020. ISBN 9786094810879., p. 77-781 1 Publication Aukų dydžių pokyčiai Ponto-Kaspijos aukštesniųjų vėžiagyvių ir žuvų lervų ontogenezėje[Prey size on the diet of Ponto-Caspian higher crustaceans and fish larvae selected prey size changes in ontogenesis]research articleJūra ir aplinka : jūrų technologijos ir gamtos mokslai. Klaipėda, 2003, Nr. 2., p. 67-73The article deals with the prey size on the diet of Ponto-Caspian higher crustaceans and fish larvae selected prey size changes in ontogenesis. For investigated hydrobiont groups the size of a selected prey changes in ontogenesis. Larger predators are feed on larger prey, while juveniles feed on smaller pray.- conference paper
; ;Mikšys, Virgilijus ;Kairiūkštis, LeonardasKenstavičius, Jonas PetrasEcological sustainability of Lithuania (ECOSLIT). Vilnius, 1996., p. 47-521 Publication The Baltic sea – a field laboratory for invasion biology[Baltijos jūra – invazinės biologijos tyrimų laboratorija]book part ;Leppäkoski, Erkki; Gollasch, StephanInvasive aquatic species of Europe : distribution, impacts and management. Dordrecht : Springer, 2002. ISBN 9789048161119., p. 253-259Since the early 1800s about 103 NIS have been recorded in the Baltic Sea. Several ecological functions of the non-native animals are new for the species-poor Baltic Sea ecosystem. A review of the research into invasion biology in the Baltic Sea countries reveals a timeline from first records of single new species toward more sophisticated studies in invasion biology.5 Publication The Baltic – a sea of invadersresearch article ;Leppäkoski, Erkki ;Gollasch, Stephan ;Gruszka, Piotr ;Ojaveer, Henn; Panov, VadimCanadian journal of fisheries and aquatic sciences. Ottawa : Canadian Science Publishing, 2002, vol. 59, no. 7., p. 1175-1188There are about 100 nonindigenous species recorded in the Baltic Sea. Invasive species have resulted in major changes in nearshore ecosystems, especially in coastal lagoons and inlets that can be identified as "centres of xenodiversity". Fewer than 70 of these species have established reproducing populations. Dominant invasion vectors include unintentional introductions via ballast water, tank sediments, and hull fouling, aquaculture, and the construction of canals that have facilitated active or passive natural dispersal. Of the approximately 60 unintentionally introduced species with a known invasion history, 38 are transoceanic (including 19 Atlantic species of American origin) and 18 of Ponto-Caspian origin. Species that have caused economic damage to fisheries, shipping, and industry include the hydrozoan Cordylophora caspia, the barnacle Balanus improvisus, the cladoceran Cercopagis pengoi, and the bivalve Dreissena polymorpha. The Baltic Sea has served as a secondary source of nonindigenous species to the North American Great Lakes. Further study is warranted to quantify large-scale ecosystem changes in the Baltic associated with establishment and population growth of nonindigenous species and to prevent future invasions.Scopus© Citations 215WOS© IF 1.965WOS© AIF 0 Publication Baltijos jūros ir Kuršių marių biologinio monitoringo reikšmė gamtonaudoje[The significance of biological monitoring of Baltic sea and Curonian lagoon in use of natural resourses]conference paper; ;Karalius, S. ;Štukova, Z.; ;Kavolytė, R. ;Balčius, V. ;Čurbanova, S.Šilerytė, E.Gamyba ir mokslas : mokslinės konferencijos medžiaga : 1993 m. gegužės 18-19 d. Klaipėda : [Klaipėdos universiteto leidykla], 1995. ISBN 9986505208., p. 60-61- conference paper
; ; ; ; ; ; ; ; ; ; Jūros ir krantų tyrimai 2020 : 13-oji nacionalinė jūros mokslų ir technologijų konferencija : konferencijos medžiaga : 2020 spalio 7–9 d., Klaipėda. Klaipėda : Klaipėdos universitetas, 2020., p. 239-2423 - conference paper
; ; ; ; ; ; ; ; ; ; Jūros ir krantų tyrimai 2020 : 13-oji nacionalinė jūros mokslų ir technologijų konferencija : konferencijos medžiaga : 2020 spalio 7–9 d., Klaipėda. Klaipėda : Klaipėdos universitetas, 2020., p. 111-1143