Freshwater Invertebrate Biology最新文献_第5页

The Physiological Ecology of Larval Lestes disjunctus Selys (Zygoptera:Odonata) 狭缝夜蛾幼虫的生理生态学研究(颧翅目:齿蛾目)

Freshwater Invertebrate Biology Pub Date : 1984-08-01 DOI: 10.2307/1467185

C. Eriksen

{"title":"The Physiological Ecology of Larval Lestes disjunctus Selys (Zygoptera:Odonata)","authors":"C. Eriksen","doi":"10.2307/1467185","DOIUrl":"https://doi.org/10.2307/1467185","url":null,"abstract":"Lestes disjunctus is a common damselfly found in small, densely vegetated temporary ponds such as the Rocky Mountain 'bog pond' studied. Hatch occurs at ice melt in May, growth is rapid and emergence is in late July. Dissolved oxygen (DO) and temperature vary considerably during this time. During a 'typical' late July day temperature and DO may range from minima at dawn of 12°C and 3.1 ppm (lowest 1.8 ppm) to maxima at 1700 h of 22°C (highest 25.5°C) and 7.6 ppm. One mode of adaptation to such variable temperature conditions is low Q10. However, Lestes' Q10S (2.4-3.6) suggest that like most aquatic poikilotherms, it does not gain competitional advantage through unique thermal adaptation. Logic suggests that respiratory regulation would be a beneficial adaptation to variable DO. However, L. disjunctus is not a good regulator of respiration either. Oxygen intake decreases a temperature-dependent 15-27% from a normal environmental high DO to its low-O2 critical point. However, daytime DO variation only causes a 10% metabolic rate variation at 18.7°C (warm, sunny day). Most metabolic rate depression occurs at night due to lowering DO. Given Lestes' physiological abilities and the pond's environmental conditions, a relatively stable high metabolic rate and activity level result during the time larvae can see to feed (evidence suggests Lestes is a visual predator). At night, when larvae cannot see to feed, lowering DO reduces their metabolic rate and therefore activity, with the energy 'saved' from not regulating perhaps accounting for this species' rapid growth rate. Finally, O2 intake accounted for by large gills, and great tolerance of DO below its critical points, combine to allow survival for short periods when such low habitat DOs exist.","PeriodicalId":154110,"journal":{"name":"Freshwater Invertebrate Biology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132489660","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: 14

A Simple Time Saving Technique for Picking Benthic Macroinvertebrate Samples 一种简单省时的底栖大型无脊椎动物取样技术

Freshwater Invertebrate Biology Pub Date : 1984-08-01 DOI: 10.2307/1467190

D. Toczydlowski

引用次数: 0

Growth Rates of the Asiatic Clam, Corbicula fluminea (Müller), in the Kanawha River, West Virginia 西弗吉尼亚州卡纳瓦河中亚洲蛤(Corbicula fluminea)的生长速度

Freshwater Invertebrate Biology Pub Date : 1984-08-01 DOI: 10.2307/1467187

K. Welch, J. Joy

{"title":"Growth Rates of the Asiatic Clam, Corbicula fluminea (Müller), in the Kanawha River, West Virginia","authors":"K. Welch, J. Joy","doi":"10.2307/1467187","DOIUrl":"https://doi.org/10.2307/1467187","url":null,"abstract":"This study was designed to assess growth rates of Corbicula fluminea under summer and winter conditions. A total of 80 small C. fluminea individuals were segregated into three shell length classes based on initial shell length. Thirty clams were assigned to Class I (<10 mm); 25 to Class II (10 to 11.9 mm); and 25 to Class III (12 to 14 mm), and placed in separate cages in the Kanawha River at Marmet, West Virginia, for a 12 week period (16 July thru 7 October 1983) when mean water temperature was 26.6°C. 'Warm water' growth rates (length/weight) were: Class I, 0.95 mm/week and 0.27 gm/week; Class II, 0.86 mm/week and 0.29 gm/week; Class III, 0.80 mm/week and 0.30 gm/week. An additional 78 clams were assigned to the same shell length classes and maintained in the Kanawha River for a 12 week period (11 October 1983 through 3 January 1984) when mean water temperature was 10.3°C. Thirty-three clams were assigned to Class I; 30 to Class II; and 15 to Class III. 'Cold water' growth rates were: Class I, 0.09 mm/week and 0.009 gm/week; Class II, 0.08 mm/week and 0.013 gm/week. Class III clams were destroyed by a predator. Summer growth rates were approximately 10.7 times higher than winter growth rates based on length and 22-32 times higher based on weight. In addition, smaller clams had higher growth rates than larger clams.","PeriodicalId":154110,"journal":{"name":"Freshwater Invertebrate Biology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130267027","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: 21

Variation between Technicians Sorting Benthic Macroinvertebrate Samples 底栖大型无脊椎动物样本分类技术人员的差异

Freshwater Invertebrate Biology Pub Date : 1984-08-01 DOI: 10.2307/1467189

W. Ettinger

引用次数: 6

A Closing Artificial Substrate Device for Sampling Benthic Macroinvertebrates in Deep Rivers 一种用于深海底栖大型无脊椎动物取样的封闭人工底物装置

Freshwater Invertebrate Biology Pub Date : 1984-08-01 DOI: 10.2307/1467188

D. Courtemanch

引用次数: 3

Ecology of Shallow and Deep Water Populations of Pontoporeia hoyi (Smith) (Amphipoda) in Lake Michigan 密歇根湖浅、深水双足类蓬鱼种群生态学研究

Freshwater Invertebrate Biology Pub Date : 1984-08-01 DOI: 10.2307/1467186

M. H. Winnell, D. White

引用次数: 58

Ecological Studies of the Sand-Dwelling Community of an East Texas Stream 东德克萨斯河沙居群落的生态学研究

Freshwater Invertebrate Biology Pub Date : 1984-05-01 DOI: 10.2307/1467095

R. Whitman, W. J. Clark

{"title":"Ecological Studies of the Sand-Dwelling Community of an East Texas Stream","authors":"R. Whitman, W. J. Clark","doi":"10.2307/1467095","DOIUrl":"https://doi.org/10.2307/1467095","url":null,"abstract":"Between February 1976 and January 1977, an ecological study was made of sandy riffle areas of Mill Creek, Newton County, Texas. The psammonic community in the main channel of Mill Creek consisted of midges, oligochaetes, flatworms, micro-crustaceans, nematodes and tardigrades. The six dominant psammonic taxa with their annual mean densities and standard deviations (102 × animals / m2) were Aeolosoma spp. (1455 ± 3448), Catenula sp. (188 ± 605), Parakiefferiella spp. (307 ± 1169), Nematoda (43 ± 105), Robackia demeijerei (20 ± 30), and Polypedium spp. (20 ± 148). The following taxa were also present in descending order of abundance: Eucyclops agilis, Macrobiotus sp., Hexagenia limbata, Tanytarsini and Parastenocaris sp. Psammon densities were lowest in summer and highest in winter. Densities were highest in mid-riffle stations of upper and lower Mill Creek, and between mid-riffle and margin. Densities were lowest at the riffle's margin, pool and the Copperas Creek stations. Highest densities may be associated with intermediate water velocities which are slow enough to permit adequate deposition of detritus, but fast enough to prevent silt clogging and deoxygenation of sand interstices. Parastenocaris sp., Rhynchataloma falcata, Tanytarsini, and Nematoda did not differ significantly in vertical distribution (α=0.05). Aeolosoma spp., Robackia demeijerei, Parakiefferiella spp., Polypedilum spp., Catenula sp., Eucyclops agilis and Hexagenia limbata populations decreased with sand depth, while Macrobiotus sp. density increased with sand depth.","PeriodicalId":154110,"journal":{"name":"Freshwater Invertebrate Biology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131967448","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: 41

Critical Thermal Maxima of Nymphs of Three Plecoptera Species from an Ozark Foothill Stream 欧扎克山麓溪流三种翅翅目若虫的临界热最大值

Freshwater Invertebrate Biology Pub Date : 1984-05-01 DOI: 10.2307/1467096

M. R. Ernst, T. Beitinger, K. Stewart

{"title":"Critical Thermal Maxima of Nymphs of Three Plecoptera Species from an Ozark Foothill Stream","authors":"M. R. Ernst, T. Beitinger, K. Stewart","doi":"10.2307/1467096","DOIUrl":"https://doi.org/10.2307/1467096","url":null,"abstract":"Prostoia completa, Isoperla namata and Phasganophora capitata nymphs captured from a second order stream in northeastern Oklahoma were exposed to a steady rise in temperature of 0.34°C/min to determine their critical thermal maxima (CTM). At a collection temperature of 6.5°C, the univoltine, winter emerging P. completa had a significantly lower mean CTM (31.5°C) than the univoltine, spring emerging I. namata and semivoltine, summer emerging P. capitata which had mean CTMs of 33.2 and 33.4°C, respectively. A one month age difference in I. namata (February to March) had no significant effect on mean CTM, and neither head capsule width nor sex of nymphs had a significant effect on the CTM within any of the three species. Phasganophora capitata nymphs collected at 6.5°C and acclimated to 17.0°C had a significantly higher mean CTM (36.3°C) than those maintained at the 6.5°C collection temperature (33.4°C). Isoperla namata treated similarly did not show a significant increase in temperature tolerance. Therefore, it appears that adaptation to summer emergence or the evolution of a semivoltine life cycle by P. capitata includes a greater ability for tolerance acclimation than found in I. namata.","PeriodicalId":154110,"journal":{"name":"Freshwater Invertebrate Biology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125277419","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: 26

Ecology and Reproductive Strategy of a South Louisiana Freshwater Mussel, Glebula rotundata (Lamarck) (Unionidae:Lampsilini) 南路易斯安那淡水贻贝(glbula rotundata, Lamarck)的生态学和繁殖策略

Freshwater Invertebrate Biology Pub Date : 1984-05-01 DOI: 10.2307/1467094

R. Parker, C. Hackney, M. Vidrine

引用次数: 24

The Impact of Sewage Effluent on the Occurrence of Psychodidae (Diptera) in a Stream 污水排放对河流中双翅目蠓发生的影响

Freshwater Invertebrate Biology Pub Date : 1984-05-01 DOI: 10.2307/1467098

E. C. Masteller, R. Wagner

引用次数: 3