Korean journal of biological sciences最新文献_第10页

The effects of genotype, density and irradiance on the growth and mortality of the brown seeweed Fucus serratus germlings 基因型、密度和辐照度对褐籽黑角藻芽生长和死亡的影响

Korean journal of biological sciences Pub Date : 2003-01-01 DOI: 10.1080/12265071.2003.9647694

H. Choi

引用次数: 0

The Pst I polymorphism of the human apolipoprotein AI gene in Korean elite athletes 韩国优秀运动员载脂蛋白AI基因的Pst多态性

Korean journal of biological sciences Pub Date : 2003-01-01 DOI: 10.1080/12265071.2003.9647685

B. Kang, Hyun Hee Kim, Kang Oh Lee

引用次数: 2

Reassessment of cambaroides dauricus and C. schrenckii (Crustacea: Decapoda: Cambaridae) 达乌尔蠓与施伦氏蠓的再评价(甲壳纲:十足目:蠓科)

Korean journal of biological sciences Pub Date : 2003-01-01 DOI: 10.1080/12265071.2003.9647704

T. Kawai, Y. Machino, H. Ko

引用次数: 4

Alcohol impairs learning of T‐maze task but not active avoidance task in zebrafish 酒精损害斑马鱼对T迷宫任务的学习，但不影响主动回避任务的学习

Korean journal of biological sciences Pub Date : 2003-01-01 DOI: 10.1080/12265071.2003.9647720

Sunggu Yang, Wansik Kim, Byung‐Hee Choi, Hae‐Young Koh, Chang-Joong Lee

{"title":"Alcohol impairs learning of T‐maze task but not active avoidance task in zebrafish","authors":"Sunggu Yang, Wansik Kim, Byung‐Hee Choi, Hae‐Young Koh, Chang-Joong Lee","doi":"10.1080/12265071.2003.9647720","DOIUrl":"https://doi.org/10.1080/12265071.2003.9647720","url":null,"abstract":"The aim of this study is to investigate whether alcohol alters learning and memory processes pertaining to emotional and spatial factors using the active avoidance and T‐maze task in zebrafish. In the active avoidance task, zebrafish were trained to escape from one compartment to another to avoid electric shocks (unconditioned stimulus) following a conditioned light signal. Acquisition of active avoidance task appeared to be normal in zebrafish that were treated with 1% alcohol for 30 min for 17 days until the end of the behavioral test, and retention ability of learned behavior, tested 2 days later, was the same as control group. In the T‐maze task, the time to find a reservoir was compared. While the latency was similar during the 1st training session between control and alcohol‐treated zebrafish, it was significantly longer in alcohol‐treated zebrafish during retention test 24 h later. Furthermore, when alcohol was treated 30 min after 2nd session without prior treatment, zebrafish demonstrated similar retention ability compared to control. These results suggest that chronic alcohol treatment alters spatial learning of zebrafish, but not emotional learning.","PeriodicalId":85060,"journal":{"name":"Korean journal of biological sciences","volume":"7 1","pages":"303 - 307"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/12265071.2003.9647720","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59655696","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: 9

A new euthyplociid burrowing mayfly (Ephemeroptera: Euthyplociinae, polymitarcyidae) from vietnam 文章标题越南细蝇科一新种穴居蜉蝣(蜉蝣目:细蝇科，多丝蝇科)

Korean journal of biological sciences Pub Date : 2003-01-01 DOI: 10.1080/12265071.2003.9647716

V. V. Nguyễn, Y. Bae

引用次数: 5

Chemical analysis of transplanted aquatic mosses and aquatic environment during a fish kill on the Chungnang river, Seoul, Korea 韩国首尔，忠清江，被移栽的水生苔藓和水生环境的化学分析

Korean journal of biological sciences Pub Date : 2002-01-01 DOI: 10.1080/12265071.2002.9647654

Joohyoung Lee, P. Johnson-Green, Eun Ju Lee

{"title":"Chemical analysis of transplanted aquatic mosses and aquatic environment during a fish kill on the Chungnang river, Seoul, Korea","authors":"Joohyoung Lee, P. Johnson-Green, Eun Ju Lee","doi":"10.1080/12265071.2002.9647654","DOIUrl":"https://doi.org/10.1080/12265071.2002.9647654","url":null,"abstract":"In mid‐April, 2000, hundreds of thousands of fish floated dead on the Chungnang River, one of the small branches of the Han River in Seoul. We examined the causes of the accident in detail, through analysis of monitoring data from the Han River Monitoring Project, which employed the transplanted aquatic moss, Fontinalis antipyretica. This allowed investigation of another possible cause of the fish kill: release of trace metals into the river from industrial sources during the rainfall event. In addition, we aimed to verify the usefulness of aquatic mosses as bioindicators of the event. Water samples collected 48 h after the fish kill exhibited low pH and high Total‐N and Total‐P, indicating that acidic compounds rich in nitrogen and phosphorus might be a major contaminant. BOD and COD were also very high. On the whole, the conditions of the river water were degraded at that time. Distinct trends were not observed in the chlorophyll phaeophytinization quotient and photosynthesis rate of transplanted mosses. However, mosses sampled soon after the accident exhibited the lowest values for those variables (p < 0.01), suggesting that stress factors in the river were diluted out over time. Heavy metals with characteristics of industrial effluents (Cr, Pb, Zn, Fe, Cu, and Cd) increased (p < 0.01), indicating that they were unlikely to be major causes of the accident.","PeriodicalId":85060,"journal":{"name":"Korean journal of biological sciences","volume":"6 1","pages":"215 - 219"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/12265071.2002.9647654","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59654725","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: 8

Fine structure of the glandular epithelium during secretory silk production in the black widow spider latrodectus mactans 黑寡妇蜘蛛分泌丝过程中腺上皮的精细结构

Korean journal of biological sciences Pub Date : 2002-01-01 DOI: 10.1080/12265071.2002.9647672

M. Moon, E. K. Tillinghast

{"title":"Fine structure of the glandular epithelium during secretory silk production in the black widow spider latrodectus mactans","authors":"M. Moon, E. K. Tillinghast","doi":"10.1080/12265071.2002.9647672","DOIUrl":"https://doi.org/10.1080/12265071.2002.9647672","url":null,"abstract":"Among the silk glands in the black widow spider Latrodectus mactans, the ampullate one is the most predominant gland in both sexes, and is composed of three functional parts ‐ excretory duct, storage ampulla and convoluted tail regions. This experiment was performed using mechanical pulling stimulation with electric motor equipment to reveal a correlation between silk usage and silk producing system in this poisonous spider. The mature secretory products in glandular epithelium are closely packed and appear as electron‐opaque spherical vesicles. A part of the vesicles with fine fibrillar paracrystalline texture seems to store some proteins which will function at the time of final assembly into fibrils. Most of the secretory silk products which originated from the rough endoplasmic reticula of the glandular epithelial cells are grown by fusion with surrounding small vesicles. However, the Golgi complex does not seem to play an important role in this process of secretion. According to progressive maturation of secretory silk product, these granules are progressively filled with a fine fibrillar material, and thus appear much more electron‐dense than those of earlier states. When the secretory product is extruded from the glandular cavity, the epithelium is rapidly changed to a thinner layer of tall columnar cells with less definitive cell membranes. After extruding there are a few secretory droplets within these cells, thus causing this region to stain much lighter.","PeriodicalId":85060,"journal":{"name":"Korean journal of biological sciences","volume":"6 1","pages":"327 - 333"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/12265071.2002.9647672","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59654812","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: 7

A new species of the genus dimorphostylis (cumacea, diastylidae) from Korea 标题韩国二形花属一新种(孜然科，二形花科)

Korean journal of biological sciences Pub Date : 2002-01-01 DOI: 10.1080/12265071.2002.9647629

Kyung-Sook Lee, Chang-Mok Lee

引用次数: 3

Effect of maternal paraquat administration on the pyloric region of the developing rat stomach 母体给药百草枯对发育中的大鼠胃幽门区的影响

Korean journal of biological sciences Pub Date : 2002-01-01 DOI: 10.1080/12265071.2002.9647659

B. Choi, Y. Gil, U. Jo

引用次数: 0

Olfactory responses of male and female red‐spotted newts to sex pheromones from the opposite sex 雌雄红点蝾螈对异性性信息素的嗅觉反应

Korean journal of biological sciences Pub Date : 2002-01-01 DOI: 10.1080/12265071.2002.9647665

Daesik Park, Shi‐Ryong Park

{"title":"Olfactory responses of male and female red‐spotted newts to sex pheromones from the opposite sex","authors":"Daesik Park, Shi‐Ryong Park","doi":"10.1080/12265071.2002.9647665","DOIUrl":"https://doi.org/10.1080/12265071.2002.9647665","url":null,"abstract":"Functional characterization of sex pheromones in olfactory responses is essential for the study of chemical communications in amphibians. Using Y‐maze olfactory preference tests, we have investigated the olfactory responses of male and female red‐spotted newts, Notophthalmus viridescens, to the crude extracts of the opposite sex's genial and cloacal pheromones. Both male and female cloacal pheromone extracts caused the opposite sex to initiate olfactory responses by leaving the starting area in the Y‐maze, but only subject males exposed to female cloacal pheromone extracts completed olfactory choice by entering the side arm of the Y‐maze which received the pheromones. For genial pheromone extracts, only female genial pheromone extracts induced initial olfactory responses from test males. Neither male nor female genial pheromone extracts made the opposite sex complete olfactory choice. Pre‐exposure of test females to male pheromone extracts increased the likelihood of initial olfactory responses. The latency for initial olfactory responses of test females that were previously exposed to male genial extracts was significantly shorter than that of control females.","PeriodicalId":85060,"journal":{"name":"Korean journal of biological sciences","volume":"6 1","pages":"287 - 292"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/12265071.2002.9647665","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59655050","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: 4