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Polish Journal of Natural Sciences最新文献

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Heterogeneity in development of the ovaries of bleak, Alburnus alburnus (L.) in Lake Kortowskie in north-eastern Poland. 波兰东北部科尔托斯基湖(Kortowskie Lake)的Alburnus Alburnus (L.)子房发育的异质性。
Polish Journal of Natural Sciences Pub Date : 2010-06-01 DOI: 10.2478/V10020-010-0015-9
W. Kopiejewska, J. Kozłowski
{"title":"Heterogeneity in development of the ovaries of bleak, Alburnus alburnus (L.) in Lake Kortowskie in north-eastern Poland.","authors":"W. Kopiejewska, J. Kozłowski","doi":"10.2478/V10020-010-0015-9","DOIUrl":"https://doi.org/10.2478/V10020-010-0015-9","url":null,"abstract":"Bleak ovaries during the period preceding the reproduction and during reproduction in Lake Kortowskie were studied as concerns reproductive diversity applying standard histological methods. Among 90 females, 88 represented batch spawning while 2 females the total spawning. Presence of female total spawners suggests that sexual maturity can occur in case of the crossbreeds of bleak with one of the total spawner species crossing with bleak. NIEJEDNORODNOŚC W ROZWOJU JAJNIKOW UKLEI, ALBURNUS ALBURNUS (L.) W JEZIORZE KORTOWSKIM W POŁNOCNO-WSCHODNIEJ POLSCE Wieslawa Kopiejewska1, Jacek Kozlowski2 1Katedra Zoologii 2Katedra Biologii i Hodowli Ryb Uniwersytet Warminsko-Mazurski w Olsztynie Slowa kluczowe: Alburnus alburnus, rozwoj jajnikow, niejednorodnośc.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"182-189"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preliminary characteristics of the trophic condition of lakes located in the nature reserve "Beaver Sanctuary on the Pasłęka River". “Pasłęka河河狸保护区”自然保护区湖泊营养状况的初步特征
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0004-Z
J. Grochowska, R. Tandyrak
{"title":"Preliminary characteristics of the trophic condition of lakes located in the nature reserve \"Beaver Sanctuary on the Pasłęka River\".","authors":"J. Grochowska, R. Tandyrak","doi":"10.2478/V10020-010-0004-Z","DOIUrl":"https://doi.org/10.2478/V10020-010-0004-Z","url":null,"abstract":"Studied were the following lakes: Paslek, Wymoj, Sarąg, Łeguty and Isąg, located in the nature reserve “Beaver Sanctuary on the Pasleka River”. The hypothesis was that lakes located in a nature protection area are subject to eutrophication in a slow rate, however, the research did not confirm it. All lakes are very fertile, as shown by the concentrations of total nitrogen, total phosphorus, electrolytic conductivity and the high negative correlation between chlorophyll a and water transparency. In the peak of the summer stagnation oxygen profile is represented by the clinograde curve typical for eutrophic lakes while free carbon dioxide distribution in the water column is shown by a “reversed” clinograde curve, also typical for fertile reservoirs.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"47-62"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Investigation of Irrigation Methods Based on the Parametric Evaluation Approach in Arayez Plain - IRAN 基于参数评价方法的伊朗阿拉耶兹平原灌溉方式研究
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0003-0
M. Albaji, A. Naseri, S. Nasab
{"title":"An Investigation of Irrigation Methods Based on the Parametric Evaluation Approach in Arayez Plain - IRAN","authors":"M. Albaji, A. Naseri, S. Nasab","doi":"10.2478/V10020-010-0003-0","DOIUrl":"https://doi.org/10.2478/V10020-010-0003-0","url":null,"abstract":"The main objective of this research is to compare different irrigation methods based upon a parametric evaluation system in an area of 54 000 ha in the Arayez plain – Iran. The results demonstrated that by applying sprinkle irrigation instead of surface and drip irrigation methods, the arability of 35 855.73 ha (66.40%) in the Arayez Plain will improve. In addition by applying drip Irrigation instead of surface and sprinkle irrigation methods, the land suitability of 16 644.27 ha (30.82%) of this Plain will improve. The comparison of the different types of irrigation techniques revealed that the sprinkle and drip irrigations methods were more effective and efficient than the surface irrigation methods for improving land productivity. It is of note however that the main limiting factor in using different irrigation methods in this area are soil texture, salinity & alkalinity, drainage, calcium carbonate content and slope.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"31-46"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of duration of development stages on the quantity of field cucumber (Cucumis sativus L.) yield in Poland. 波兰不同生育期对田间黄瓜产量的影响。
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0001-2
R. Kalbarczyk
{"title":"Effect of duration of development stages on the quantity of field cucumber (Cucumis sativus L.) yield in Poland.","authors":"R. Kalbarczyk","doi":"10.2478/V10020-010-0001-2","DOIUrl":"https://doi.org/10.2478/V10020-010-0001-2","url":null,"abstract":"","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"1-21"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Evaluation of alfa diversity of an anthropogenic forest threatened by pesticide tomb. 农药墓威胁下的人工林阿尔法植物多样性评价。
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0005-Y
M. Grzybowski, J. Szarek, K. Skibniewska, J. Guziur, S. Lew, T. Mieszczynski, M. Gesek
{"title":"Evaluation of alfa diversity of an anthropogenic forest threatened by pesticide tomb.","authors":"M. Grzybowski, J. Szarek, K. Skibniewska, J. Guziur, S. Lew, T. Mieszczynski, M. Gesek","doi":"10.2478/V10020-010-0005-Y","DOIUrl":"https://doi.org/10.2478/V10020-010-0005-Y","url":null,"abstract":"","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"63-80"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
PHYSICOCHEMICAL CHARACTERISTICS OF LINSEED OIL AND FLOUR 亚麻籽油和面粉的理化特性
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0008-8
B. Piłat, R. Zadernowski
{"title":"PHYSICOCHEMICAL CHARACTERISTICS OF LINSEED OIL AND FLOUR","authors":"B. Piłat, R. Zadernowski","doi":"10.2478/V10020-010-0008-8","DOIUrl":"https://doi.org/10.2478/V10020-010-0008-8","url":null,"abstract":"The objective of the study was to determine the chemical composition of a new linseed cultivar Zlocisty, characterized by a light seed coat. In this study, determinations were conducted for contents of: water and volatile substances, protein, fat, dietary fiber, acid detergent fiber (ADF) and neutral detergent fiber (NDF), pectins, starch, saccharides, methyl esters of fatty acids, peroxide number of fat, acidic and iodine values of fat, as well as for the percentage contribution of particular forms of lipids, sterols and tocopherols. An analysis of the chemical composition of linseed oil and flour demonstrated that both of these products may be valuable components of dietary supplements. The chemical composition of linseed oil was determined with special attention paid to bioactive substances from tocopherols, sterols and phospholipids. Based on the assayed chemical composition of flour, it appears that it might constitute a rich source of dietary fiber and zinc. The management of both of these semi-products affords the possibility of waste-free seed processing.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"106-113"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
THE EFFECTS OF SOCIAL HIERARCHY IN A DAIRY CATTLE HERD ON MILK YIELD 社会等级对奶牛产奶量的影响
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0002-1
Tomasz Sołtysiak, Z. Nogalski
{"title":"THE EFFECTS OF SOCIAL HIERARCHY IN A DAIRY CATTLE HERD ON MILK YIELD","authors":"Tomasz Sołtysiak, Z. Nogalski","doi":"10.2478/V10020-010-0002-1","DOIUrl":"https://doi.org/10.2478/V10020-010-0002-1","url":null,"abstract":"The objective of this study was to determine the effects of dominance hierarchy in a dairy cattle herd on milk yield. Observations of social behaviors in a group of 126 Polish Holstein-Friesian cows were carried out for seven days, starting from the first grazing day. In order to estimate the position of each animal in the herd, the interactions and relationships between cows were studied. The indices of aggression, dominance and social rank were calculated. These data were used to calculate the competitive index, which enabled to divide all animals into the following subgroups of dominance: dominant cows, subdominant cows, subordinate cows, submissive cows and marginal cows. All dairy cows were at a similar age. Their social rank was found to be positively correlated with body weight and condition. Higher-ranking animals were characterized by a higher milk yield. Both social status and performance parameters may provide a basis for selecting animals and placing them into groups, so as to optimize milk production.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"22-30"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
The reproduction of neon tetra, Paracheirodon innesi [Myers, 1936], under controlled conditions 在控制条件下的氖四环鱼的繁殖，Paracheirodon innesi [Myers, 1936]
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0006-X
D. Kucharczyk, K. Targońska, D. Żarski, S. Krejszeff, K. Kupren, M. Łuczyński, A. Szczerbowski
{"title":"The reproduction of neon tetra, Paracheirodon innesi [Myers, 1936], under controlled conditions","authors":"D. Kucharczyk, K. Targońska, D. Żarski, S. Krejszeff, K. Kupren, M. Łuczyński, A. Szczerbowski","doi":"10.2478/V10020-010-0006-X","DOIUrl":"https://doi.org/10.2478/V10020-010-0006-X","url":null,"abstract":"A study on reproduction of neon tetra has been carried out under controlled conditions. Neon tetra is very popular aquarium fish. It was observed that spawners of this species produce viable gametes during a few (5–6) spawning periods only. From the breeding perspective fish of that species should be reproduced again shortly after the completed spawning and time between spawns should be 15 to 20 days. Keeping the fish between spawning periods more than 20 days results in a significant deterioration of quality of gametes, expressed by the decreased number of 12-day-old larvae. It was shown that before spawning spawners should be kept in water at 22 o C. The negative effect of keeping","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"81-92"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
The influence of temperature on successful reproductions of burbot, Lota lota [L.] under hatchery conditions 温度对大菱鲆成功繁殖的影响[j]。在孵化场条件下
Polish Journal of Natural Sciences Pub Date : 2010-03-01 DOI: 10.2478/V10020-010-0007-9
D. Żarski, D. Kucharczyk, Wojciech Sasinowski, K. Targońska, A. Mamcarz
{"title":"The influence of temperature on successful reproductions of burbot, Lota lota [L.] under hatchery conditions","authors":"D. Żarski, D. Kucharczyk, Wojciech Sasinowski, K. Targońska, A. Mamcarz","doi":"10.2478/V10020-010-0007-9","DOIUrl":"https://doi.org/10.2478/V10020-010-0007-9","url":null,"abstract":"The aim of this study was to define an influence of water temperature on successful reproduction of burbot under the hatchery conditions. Research was conducted during four successive spawning seasons where wild spawners were used. In the first three years of study fish were kept in three different (natural) thermal conditions. In the fourth year it was confirmed that the highest efficacy of synchronization of the spawning could be reached only under controlled thermal regimes. That year one group of spawners was kept at 6 o C before spawning and then a sudden decrease of the","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"25 1","pages":"93-105"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 48
The effect of feeding and housing conditions of growing-finishing pigs on pork quality. 生长育肥猪饲养条件和饲养条件对猪肉品质的影响。
Polish Journal of Natural Sciences Pub Date : 2009-12-01 DOI: 10.2478/V10020-009-0019-5
K. Karpiesiuk, J. Falkowski
{"title":"The effect of feeding and housing conditions of growing-finishing pigs on pork quality.","authors":"K. Karpiesiuk, J. Falkowski","doi":"10.2478/V10020-009-0019-5","DOIUrl":"https://doi.org/10.2478/V10020-009-0019-5","url":null,"abstract":"The objective of this study was to determine the quality of meat from pigs housed on litter and in litterless pens and fed during the fattening period (from 48 kg to 105 kg bw) complete diets and complete diets supplemented with green forage. Hybrid growing-finishing pigs [ ( Polish Landrace x Polish Large White) x ( Pietrain x Duroc)] were divided into 4 experimental groups, each of 12 animals. M. longissimus dorsi samples were collected from pig carcasses for an analysis of proximate chemical composition and physicochemical properties. It was found that the applied feeding and housing conditions had no significant effect on the chemical composition and quality of pork (m. longissimus dorsi).","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"24 1","pages":"198-206"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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