{"title":"Fecundity of the northern puffer,Sphoeroides maculatus, from Chesapeake Bay","authors":"J. Merriner, J. Laroche","doi":"10.2307/1350368","DOIUrl":"https://doi.org/10.2307/1350368","url":null,"abstract":"Fecundity data for 24 northern puffer from the lower Chesapeake Bay indicate production of up to 0.5 million eggs by 300 mm TL fish. The left ovary averaged 1.6X larger than the right. Despite the physical difference in ovary size, eggs from Gilson’s solution treated ovaries were of equivalent size in both left and right ovaries. Fecundity versus total body length and body weight are presented.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134542743","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}
{"title":"Physiological responses of estuarine organisms to chlorine","authors":"R. M. Block","doi":"10.2307/1350388","DOIUrl":"https://doi.org/10.2307/1350388","url":null,"abstract":"Chlorine produced stress to estuarine organisms may be indicated by physiological responses that are not reflected in mortality studies. The physiological parameters selected should relate to the functional physiology for a particular species. Time of exposure should be correlated with the behavior patterns for the test species. More research is required using multivariate designs on the effects of chlorine on selected euryhaline species at various salinities.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131564505","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}
{"title":"New and noteworthy amphipod crustaceans from North Carolina, U.S.A.","authors":"Kenneth H. Bynum, R. Fox","doi":"10.2307/1350362","DOIUrl":"https://doi.org/10.2307/1350362","url":null,"abstract":"During the course of faunistic investigations of estuarine Amphipoda in North Carolina (Fox and Bynum, 1975), several undescribed species have been found. Six of these, in the generaGammarus, Maera, Stenothoe, Lembos andMicrodeutopus, are described here.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"86 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133652229","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}
{"title":"Identification of organic halogen products","authors":"R. Jolley","doi":"10.2307/1350380","DOIUrl":"https://doi.org/10.2307/1350380","url":null,"abstract":"Approximately two million tons of chlorine are used annually in this country for processing pulp and paper materials and for treating potable waters, cooling waters, waste waters, and other waters of environmental concern (White 1976). Organic halogen products are formed in these processes (Bellar et al. 1974; Brownlee and Strachan 1976; Glaze et al. 1973; Glaze and Henderson 1975; Glaze et al. 1976; Jolley 1973, 1975, 1976; Jolley et al. 1976; Keith 1976; Rogers and Keith 1976; Stevens et al. 1976). Thus there is considerable potential for adverse environmental effects to occur","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114015937","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}
{"title":"Distribution and ecology of estuarine ectoprocts: A critical review","authors":"J. Winston","doi":"10.2307/1350363","DOIUrl":"https://doi.org/10.2307/1350363","url":null,"abstract":"While most gymnolaemates are restricted to waters of normal salinity, at least 3–6% are able to penetrate some distance into mixohaline water. Of this group, which includes 9 species of cyclostomes, 35 species of ctenostomes, 55 species of anascan and 21 species of ascophoran cheilostomes, the cyclostomes and the ascophorans are least tolerant of diluted salinities, the ctenostomes and the anascans are most tolerant. Like many other groups of benthic organisms, ectoprocts show a decrease in numbers of species with decreasing salinity. Only 5 species can penetrate into waters of less than 3‰. About 20 species can be considered truly brackish-water organisms, being most abundant in mixohaline waters. Apparently these species possess some means of active osmoregulation, probably at the tissue level. The distribution of brackish water ectoprocts depends not on salinity alone, but also on factors of temperature, substrate availability and the general stability of the environment. Research most necessary before distribution patterns can be explained concerns the salinity tolerance of larvae and adults, larval behavior, and physiology. Also needed are faunal studies, particularly in tropical estuarine localities.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114740598","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}
{"title":"Speciation of chlorine produced oxidants in marine waters: Theoretical aspects","authors":"R. Sugam, G. Helz","doi":"10.2307/1350376","DOIUrl":"https://doi.org/10.2307/1350376","url":null,"abstract":"","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122687118","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}
{"title":"Effects of Chlorine on the Copepod Acartia tonsa","authors":"D. R. Heinle, Melvin S. Beaven","doi":"10.2307/1350385","DOIUrl":"https://doi.org/10.2307/1350385","url":null,"abstract":"There are published values of chlorine toxicity to freshwater copepods (Latimer, Brooks, and Beeton, 1975) but none for estuarine species. Roberts, Diaz, Bender, and Huggett (1975) found that 24 and 48 hour LC50's for Acartia tonsa were less than 0.05 mg/l total residual chlorine. Unpublished results are available for Acartia tonsa from the work of Gentile, Cardin, Johnson, and Sosnowski (1975) of.the Environmental Protection Agency, Capuzzo and Goldman (pers. commun.) at the Woods Hole Oceanographic Institute, and our work at the Chesapeake Biological Laboratory. We found LC50's of 0.175, 0.062, 0.028 mg/l of chlorine produced oxidants for adult and immature copepodids (combined) of A. tonsa at 150C and salinities of 10.4 to 11.8%o.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129517311","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}
{"title":"The chemistry of amino acids and peptides in power plant cooling towers","authors":"W. Stanbro","doi":"10.2307/1350381","DOIUrl":"https://doi.org/10.2307/1350381","url":null,"abstract":"","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131028382","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}
{"title":"The Fate and Effects of Chlorine in Coastal Waters:' Summary and Recommendations","authors":"R. M. Block, G. Helz, W. P. Davis","doi":"10.2307/1350373","DOIUrl":"https://doi.org/10.2307/1350373","url":null,"abstract":"This workshop was a logical extension of the conference \"Environmental Impact of Water Chlorination\" sponsored by EPA/ ERDA and Oak Ridge National Laboratory 22-24 October, 1975. At Oak Ridge, engineers, environmentalists, biological and chemical researchers, and public health specialists came together and reviewed all aspects of chlorination of water. Among presentations at Oak Ridge were clear signals that chlorination of marine waters is unique and not analogous to chlorination of fresh waters. In effect this was reinforcement of research strategies of several federal, institutional and industrial groups. This workshop was therefore a chance for researchers to air, examine and criticize research activity underway, not to report conclusions per se. It constituted a forum where researchers","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134083644","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}
{"title":"The distribution of polystyrene spheres and nibs in Block Island Sound during 1972–1973","authors":"H. M. Austin, Patricia M. Stoops-Glas","doi":"10.2307/1350372","DOIUrl":"https://doi.org/10.2307/1350372","url":null,"abstract":"Recent investigations have shown the pelagic distribution of plastic particles in the ocean to be widespread; and their source and fate have been the subject of considerable discussion in the United States. In the waters of Block Island Sound there is a seasonal fluctuation in their abundance. Their source appears to be Long Island Sound, probably originating from the rivers on the Connecticut Shore. They are transported out to sea by the action of the tidal currents in the upper 10–15 meters of the water column.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127902499","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}