Chesapeake Science最新文献_第3页

Kepone® bioconcentration, accumulation, loss, and transfer through estuarine food chains Kepone®的生物浓缩、积累、损失和通过河口食物链的转移

Chesapeake Science Pub Date : 1977-09-01 DOI: 10.2307/1350804

L. Bahner, Alfred J. Wilson, J. M. Sheppard, J. Patrick, L. R. Goodman, G. Walsh

引用次数: 61

On the dynamic balance of the Chesapeake Bay waters 关于切萨皮克湾水域的动态平衡

Chesapeake Science Pub Date : 1977-09-01 DOI: 10.2307/1350810

A. Blumberg

引用次数: 9

Allozyme Genetics of Life Cycle Stages of Brachyurans 腕足动物生命周期阶段的同工酶遗传学

Chesapeake Science Pub Date : 1977-09-01 DOI: 10.2307/1350802

J. Gooch

引用次数: 25

Occurrence of large striped mullet,Mugil cephalus, in Cape Cod Bay, Massachusetts 大条纹鲻鱼在马萨诸塞州科德角湾的出现

Chesapeake Science Pub Date : 1977-09-01 DOI: 10.2307/1350805

Randall B. Fairbanks, R. Lawton

引用次数: 2

Field studies of shell regrowth as a bioindicator of eastern oyster ( Crassostrea virginica Gmelin) response to 2,4-D BEE in Maryland tidewaters 马里兰州潮汐水域东部牡蛎(Crassostrea virginica Gmelin)对2,4- d BEE响应的贝壳再生生物指标的野外研究

Chesapeake Science Pub Date : 1977-09-01 DOI: 10.2307/1350800

C. K. Rawls

引用次数: 1

The myxophyceae of the marshes of Southern Delaware 特拉华州南部沼泽中的黏菌科

Chesapeake Science Pub Date : 1977-06-01 DOI: 10.2307/1350862

R. Ralph

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引用次数: 13

Acute toxicity of Kepone® to four estuarine animals Kepone®对四种河口动物的急性毒性

Chesapeake Science Pub Date : 1977-06-01 DOI: 10.2307/1350864

S. C. Schimmel, Alfred J. Wilson

引用次数: 44

Fine Structure of the Myocardium of the Blue Crab Callinectes sapidus Rathbun 蓝蟹(Callinectes sapidus Rathbun)心肌的精细结构

Chesapeake Science Pub Date : 1977-06-01 DOI: 10.2307/1350861

W. Hawkins, H. D. Howse, V. Ferrans

引用次数: 8

A study of the fish community in the vicinity of a thermal discharge in the James River, Virginia 对弗吉尼亚州詹姆斯河热排放附近鱼类群落的研究

Chesapeake Science Pub Date : 1977-06-01 DOI: 10.2307/1350857

J. W. White, W. S. Woolcott, W. Kirk

{"title":"A study of the fish community in the vicinity of a thermal discharge in the James River, Virginia","authors":"J. W. White, W. S. Woolcott, W. Kirk","doi":"10.2307/1350857","DOIUrl":"https://doi.org/10.2307/1350857","url":null,"abstract":"The size, species composition and structure of the fish community in a 9.6 km stretch of the James River in the Piedmont Province of Virginia were analyzed. Twenty collections were made by electrofishing from October 1972 through September 1973 from both the north side of the river, which received a thermal discharge from an electric power station (ΔT4-14C at outfall), and the south side where temperatures were ambient. Parameters investigated were number of species, total number of individuals and the Shannon-Wiener and evenness indices of species diversity. Differences were found to exist in community structure among seasons within both the ambient and thermally influenced zones. In the ambient zone all parameters showed significant seasonal change with values lower in the winter. At the outfall station significant seasonal change occurred for only the diversity and evenness indices with values lower in the summer. Average total abundance remained lower within all seasons at the outfall station than in the ambient zone. As temperatures declined downstream from the point of effluent discharge parameter values more closely approached those on the unheated side of the river.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":" 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120935909","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

Kepone®: Chronic effects on embryo, fry, juvenile, and adult sheepshead minnows (Cyprinodon variegatus) Kepone®:对胚胎、鱼苗、幼鱼和成年羊头鲦鱼(Cyprinodon variegatus)的慢性影响

Chesapeake Science Pub Date : 1977-06-01 DOI: 10.2307/1350865

D. Hansen, L. R. Goodman, Alfred J. Wilson

{"title":"Kepone®: Chronic effects on embryo, fry, juvenile, and adult sheepshead minnows (Cyprinodon variegatus)","authors":"D. Hansen, L. R. Goodman, Alfred J. Wilson","doi":"10.2307/1350865","DOIUrl":"https://doi.org/10.2307/1350865","url":null,"abstract":"We investigated the toxicity of Kepone to, and uptake by embryo, fry, juvenile, and adult sheepshead minnows (Cyprinodon variegatus) using intermittent-flow toxicity tests. Concentration of Kepone and percentage of adult fish surviving in a 28-day exposure were: Control, 95%; 0.05 μg/liter, 95%; 0.16 μg/liter, 100%; 0.80 μ/liter, 78%; 1.9 μg/liter, 20%; and 7.8 μg/liter and 24 μg/liter, 0%. Concentration factors (concentrations in fish divided by concentrations measured in water) for adult fish averaged 5,200 (range 3,100 to 7,000). Symptoms of poisoning included scoliosis, darkening of the posterior one-third of the body, hemorrhaging near the brain and on the body, edema, fin-rot, uncoordinated swimming, and cessation of feeding. Adults surviving the first exposure were spawned, and the embryonic development, hatching, and survival and growth of fry and juveniles were monitored in a 36-day exposure to Kepone concentrations of 0.08, 0.18, 0.72, 2.0, 6.6, and 33 μg/liter. A significant number of embryos from adult fish exposed to 1.9 μg of Kepone/liter of water developed abnormally and died even when incubated in Kepone-free water. Kepone in water was not as lethal to progeny as to adults: 36-day LC50 for juveniles was 6.7μg/liter; 28-day LC50 for adults, 1.3 μg/liter. However, the average standard length of juvenile fish was significantly reduced by exposure to 0.08 μg of Kepone/liter of water; some fish developed scoliosis. Concentration factors in juvenile sheepshead minnows averaged 7,200 and increased from 3,600 to 20,000 as exposure concentrations decreased.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123650377","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: 38