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  • Springer  (16)
  • Biology  (9)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (4)
  • Geography  (3)
  • Electrical Engineering, Measurement and Control Technology
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  • Articles  (16)
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  • 1
    Electronic Resource
    Electronic Resource
    Understanding agri-food networks as social relations (2000)
    Springer
    Agriculture and human values 17 (2000), S. 279-283 
    Details
    ISSN: 1572-8366
    Keywords: Agri-food network ; Gender ; Sustainable agriculture ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Actor network theory and supply chainmanagement theory provide suggestive researchdirections for understanding regional agri-foodnetworks. These theories claim that relationshipsbased upon trust and cooperation are critical to thestrength and vitality of the network. This means thatexploring and detailing these relationships among thesuppliers, producers, workers, processors, brokers,wholesalers, and retailers within specific regionalgeographies of these networks are critical forfurthering cooperation and trust. Key areas ofcooperation include resource sharing andapprenticeship programs. Employing food networks as akey unit of contextual analysis will deepen ourunderstanding of how to enhance their resiliency andvibrancy. Important questions can be raised about thedifference gender makes for farmers, brokers,entrepreneurs, and workers in local food networks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007692303118
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  • 2
    Electronic Resource
    Electronic Resource
    Stratigraphy of total metals in PIRLA sediment cores (1992)
    Springer
    Journal of paleolimnology 7 (1992), S. 191-214 
    Details
    ISSN: 1573-0417
    Keywords: geochemistry ; metals ; lake sediments ; paleolimnology ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Sediment cores from 30 low-alkalinity lakes in northern New England (NE), New York (NY), the northern Great Lakes States (NGLS) of Minnesota, Michigan, and Wisconsin, and Florida (FL) have been dated by 210Pb and analyzed for water and organic content, eight major elements (Al, Ti, Fe, Mn, Ca, Mg, Na, K) plus four trace metals (Pb, Zn, Cu, and V). Variations in the percentages of major elements through time are dominated by long-term independent variations in the abundance of SiO2, FeO, and to a lesser extent Ca and Al. Additional variations are caused by varying proportions of inorganic matter. Major variations in chemistry are generally unrelated to documented distrubances in the watersheds; most disturbances are minor fires or selective logging. Accelerated accumulation of Pb from atmospheric sources into sediment first occurs in sediment dated between 1800 and 1850 in NY and NE, slightly later in the NGLS region, and about 1900 in FL. Modern accumulation rates in all areas are comparable (ca. 1 to 4 μg cm−2 yr−1). Accumulation rates of Pb in some lakes have declined significantly from 1975 to 1985. Atmospheric deposition of anthropogenic Zn and Cu is also indicated by generally increasing accumulation rates in sediment cores, but the record is not as clear nor are chemical profiles in all lakes parallel to the trends in atmospheric emissions inferred on the basis of fossil fuel consumption, smelting, and other industrial activities. Inter-lake variations in profiles of Cu and Zn are large. Vanadium accumulation rates increase by the 1940s in NY and NE, but not until the 1950s in the NGLS region. This timing correlates with regional trends in the combustion of fuel oil, a major source of atmospheric V. Acidification of some of the lakes is suggested by decreases in the concentration and accumulation rates of Mn, Ca, and Zn in recent sediment, relative to other elements of catchment origin. The decreases generally occur slightly before the onset of acidification as indicated by diatoms. Increased sediment accumulation rates for Fe may indicate the acidification of watershed soils. The use of the accumulation rate of TiO2 as an indicator of rates of erosion and for normalization of trace metal accumulation rates is in question for lakes where the flux of TiO2 from the atmosphere varies and is a significant fraction of the total flux of TiO2 to the sediment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00181714
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  • 3
    Electronic Resource
    Electronic Resource
    A survey of dermatophytes from human patients in the United States from 1985 to 1987 (1991)
    Springer
    Mycopathologia 114 (1991), S. 117-126 
    Details
    ISSN: 1573-0832
    Keywords: dermatophytes ; survey ; United States ; humans ; 1985/87
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A survey of dermatophytes isolated from patients seeking medical advice was made from 1985 to 1987 in the United States. The survey included 54 locations with data from 45 cities and one state. Listing of the isolated dermatophytes and the frequency given by percentage of the total follows: Trichophyton rubrum 54.8%, T. tonsurans 31.3%, T. mentagrophytes 6.0%, Microsporum canis 4.0%, Epidermophyton floccosum 2.0%, M. gypseum 0.6%, and T. verrucosum 0.2%. Out of a total of 14,696 isolates M. audouinii was cultured 13 times, T. violaceum 12 times, M. nanum 6 times, T. terrestre 4 times, and T. soudanense twice. Single isolations were made of M.fulvum, M. ferrugineum and T. schoenleinii. Collection of dermatophyte data in Tucson, Arizona, began in 1966. In 1987, the first case of tinea capitis caused by T. tonsurans was observed. Other isolates of this organism as the cause of tinea capitis were made in this city during that year. These infections were in black children. With the recent growth of Tucson, the percentage of blacks in the population increased and this pathogen was introduced into the general population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00436431
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  • 4
    Electronic Resource
    Electronic Resource
    Seeing Patterns: Models, Visual Evidence and Pictorial Communication in the Work of Barbara McClintock (1999)
    Springer
    Journal of the history of biology 32 (1999), S. 163-195 
    Details
    ISSN: 1573-0387
    Keywords: cytogenetics ; diagrams ; genetics ; illustrations ; McClintock ; models ; molecular biology ; photographs ; twentieth-century ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Notes: Abstract Barbara McClintock won the Nobel Prize in 1983 for her discovery of mobile genetic elements. Her Nobel work began in 1944, and by 1950 McClintock began presenting her work on “controlling elements.” McClintock performed her studies through the use of controlled breeding experiments with known mutant stocks, and read the action of controlling elements (transposons) in visible patterns of pigment and starch distribution. She taught close colleagues to “read” the patterns in her maize kernels, “seeing” pigment and starch genes turning on and off. McClintock illustrated her talks and papers on controlling elements or transposons with photographs of the spotted and streaked maize kernels which were both her evidence and the key to her explanations. Transposon action could be read in the patterns by the initiated, but those without step by step instruction by McClintock or experience in maize often found her presentations confusing. The photographs she displayed became both McClintock's means of communication, and a barrier to successful presentation of her results. The photographs also had a second and more subtle effect. As images of patterns arrived at through growth and development of the kernel, they highlight what McClintock believed to be the developmental consequences of transposition, which in McClintock's view was her central contribution, over the mechanism of transposition, for which she was eventually recognized by others. Scientific activities are extremely visual, both at the sites of investigation and in communication through drawings, photographs, and movies. Those visual messages deserve greater scrutiny by historians of science.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004420726771
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  • 5
    Electronic Resource
    Electronic Resource
    Terrestrial Carbon Dynamics: Case Studies in the Former Soviet Union, the Conterminous United States, Mexico and Brazil (1997)
    Springer
    Mitigation and adaptation strategies for global change 1 (1997), S. 363-383 
    Details
    ISSN: 1573-1596
    Keywords: carbon flux ; land use ; former Soviet Union ; United States ; Mexico ; Brazil ; forests
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Abstract This research assessed land-use impacts on C flux at a national level in four countries: former Soviet Union, United States, Mexico and Brazil, including biotic processes in terrestrial ecosystems (closed forests, woodlands, and croplands), harvest of trees for wood and paper products, and direct C emission from fires. The terrestrial ecosystems of the four countries contain approximately 40% of the world's terrestrial biosphere C pool, with the FSU alone having 27% of the global total. Average phytomass C densities decreased from south to north while average soil C densities in all three vegetation types generally increased from south to north. The C flux from land cover conversion was divided into a biotic component and a land-use component. We estimate that the total net biotic flux (Tg/yr) was positive (= uptake) in the FSU (631) and the U.S. (332), but negative in Mexico (−37) and Brazil (−16). In contrast, total flux from land use was negative (= emissions) in all four countries (TgC/yr): FSU −343; U.S. −243; Mexico −35; and Brazil −235. The total net effect of the biotic and land-use factors was a C sink in the FSU and the U.S. and a C source in both Brazil and Mexico.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:MITI.0000027388.65532.60
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  • 6
    Electronic Resource
    Electronic Resource
    Alien plant species composition and associations with anthropogenic disturbance in North American forests (1998)
    Springer
    Plant ecology 139 (1998), S. 49-62 
    Details
    ISSN: 1573-5052
    Keywords: Alien species ; Anthropogenic disturbance ; Biological invasions ; Forests ; Ground vegetation ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A probability-based sampling scheme was used to survey plant species composition in forests of 16 states in seven geopolitical regions of the United States (California, Colorado, Minnesota, and parts of the Pacific Northwest, Southeast, Mid-Atlantic, and Northeast) in 1994. The proportion of alien species relative to the total species number and to canopy cover in the ground stratum (0–0.6 m height) was evaluated in 279 plots. Visually evident anthropogenic disturbances (e.g., artificial regeneration, logging, prescribed burning, and grazing by livestock), if any, were recorded on each plot. In each of the seven regions we quantified (1) the percentage of the number of species and total cover comprised of alien species, (2) the difference in these percentages for disturbed and undisturbed plots, and (3) the origin or native range for the alien species. The percentage of alien species ranged from approximately 4.5% (Colorado) to approximately 13.2% (California). The percentage of alien species cover ranged from approximately 1.5% in Colorado to 25% in California. In five regions, species introduced from temperate Eurasia comprised the largest proportion of alien species and cover. In the Southeast, species introduced from far eastern and subtropical Asia dominated the alien flora. In the Mid-Atlantic, the majority of alien species was Eurasian and the majority of alien species cover consisted of far eastern and subtropical Asian species. The proportion of plots in which at least one alien species was recorded was significantly higher in disturbed than undisturbed plots in the Southeast and marginally significantly higher ($p=0.053$) in the Northeast. These results are consistent with other published studies that indicate that anthropogenic disturbance affects the structure and composition of both the ground stratum and upper canopy of forest habitats. In other regions, however, no significant differences were found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009730702302
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  • 7
    Electronic Resource
    Electronic Resource
    US Fish and Wildlife Service 1979 wetland classification: A review (1995)
    Springer
    Plant ecology 118 (1995), S. 139-152 
    Details
    ISSN: 1573-5052
    Keywords: Classification ; Definition ; United States ; Wetland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In 1979 the US Fish and Wildlife Service published and adopted a classification of wetlands and deepwater habitats of the United States. The system was designed for use in a national inventory of wetlands. It was intended to be ecologically based, to furnish the mapping units needed for the inventory, and to provide national consistency in terminology and definition. We review the performance of the classification after 13 years of use. The definition of wetland is based on national lists of hydric soils and plants that occur in wetlands. Our experience suggests that wetland classifications must facilitate mapping and inventory because these data gathering functions are essential to management and preservation of the wetland resource, but the definitions and taxa must have ecological basis. The most serious problem faced in construction of the classification was lack of data for many of the diverse wetland types. Review of the performance of the classification suggests that, for the most part, it was successful in accomplishing its objectives, but that problem areas should be corrected and modification could strengthen its utility. The classification, at least in concept, could be applied outside the United States. Experience gained in use of the classification can furnish guidance as to pitfalls to be avoided in the wetland classification process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00045196
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  • 8
    Electronic Resource
    Electronic Resource
    Preliminary distributional analysis of US endangered bird species (2000)
    Springer
    Biodiversity and conservation 9 (2000), S. 1313-1322 
    Details
    ISSN: 1572-9710
    Keywords: BIOCLIM ; birds ; conservation strategies ; ecological niche modeling ; endangered species ; GARP ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A first exploration of applications of ecological niche modeling and geographic distributional prediction to endangered species protection is developed. Foci of richness of endangered bird species are identified in coastal California and along the southern fringe of the United States. Species included on the Endangered Species List on the basis of peripheral populations inflate these concentrations considerably. Species without protection in the US National Park System are focused particularly in peninsular Florida. Application of this methodology to additional taxa and regions holds promise for diverse conservation applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008924322405
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  • 9
    Electronic Resource
    Electronic Resource
    The destruction of aquatic vegetation by carp (1983)
    Springer
    Hydrobiologia 106 (1983), S. 37-41 
    Details
    ISSN: 1573-5117
    Keywords: carp ; aquatic vegetation ; enclosure experiment ; Southern France ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The destruction of submerged vegetation by common carp, Cyprinus carpio L. is tested in six enclosures with different biomass (kg ha−1) of carp in a marsh of the Camargue, southern France. After 71 days, a strong negative relationship was found between the biomass of carp and the amount of aquatic vegetation present in the enclosures. The results are compared with similar studies in the United States. The absence of problem of vegetation destruction by carp in Europe, in contrast to North America, may be explained by lower biomass of these populations in Europe, and by a higher weight of carp in North America.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00016414
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  • 10
    Electronic Resource
    Electronic Resource
    Colonization and succession of benthic macroinvertebrates in a new reservoir (1984)
    Springer
    Hydrobiologia 112 (1984), S. 27-39 
    Details
    ISSN: 1573-5117
    Keywords: benthic macroinvertebrates ; colonization ; succession ; reservoir ; impoundment ; mainstream ; United States ; Southeast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The purpose of this study was to examine the colonization and succession of benthic macroinvertebrates in shallow areas (〈7 m) of Lake Anna, a new mainstream impoundment in the southeastern U.S.A. Benthic macroinvertebrates were sampled for the first three years after filling by means of artificial substrates placed on the bottom and retrieved with SCUBA. Lake Anna was well colonized by benthic macroinvertebrates during the summer season immediately after impoundment. The total density of organisms increased in each of the first three years. Major changes in the fauna occurred between the first and second years, but the changes between the second and third years were more subtle. The fauna could be divided into two distinct groups based upon the time when the organisms were most consistently abundant. The first colonizers appeared to be dependent upon the components of the former terrestrial ecosystem for food and habitat. As autochthonous factors began to regulate succession, diversity increased and the dominant species shifted to an assemblage of second colonizers. These factors included: (1) decomposition of terrestrial vegetation and detritus leaving bare substrate, (2) sedimentation, (3) improved food quality of the organic matter in the sediment because of ingestion and egestion by the organisms themselves, (4) increased plankton populations, and (5) appearance of macrophytes. As the second colonizers became firmly established in the third year, distinct patterns of spatial distribution began to appear among species with similar niches.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00007663
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  • 11
    Electronic Resource
    Electronic Resource
    Terrestrial carbon dynamics: Case studies in the former Soviet Union, the conterminous United States, Mexico and Brazil (1997)
    Springer
    Mitigation and adaptation strategies for global change 1 (1997), S. 363-383 
    Details
    ISSN: 1573-1596
    Keywords: carbon flux ; land use ; former Soviet Union ; United States ; Mexico ; Brazil ; forests
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Abstract This research assessed land-use impacts on C flux at a national level in four countries: former Soviet Union, United States, Mexico and Brazil, including biotic processes in terrestrial ecosystems (closed forests, woodlands, and croplands), harvest of trees for wood and paper products, and direct C emission from fires. The terrestrial ecosystems of the four countries contain approximately 40% of the world's terrestrial biosphere C pool, with the FSU alone having 27% of the global total. Average phytomass C densities decreased from south to north while average soil C densities in all three vegetation types generally increased from south to north. The C flux from land cover conversion was divided into a biotic component and a land-use component. We estimate that the total net biotic flux (Tg/yr) was positive (=uptake) in the FSU (631) and the U.S. (332), but negative in Mexico (-37) and Brazil (-16). In contrast, total flux from land use was negative (=emissions) in all four countries (TgC/yr): FSU -342; U.S. -243; Mexico -35; and Brazil -235. The total net effect of the biotic and land-use factors was a C sink in the FSU and the U.S. and a C source in both Brazil and Mexico.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00464888
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  • 12
    Electronic Resource
    Electronic Resource
    A survey of dermatophytes isolated from human patients in the United States from 1982 to 1984 (1987)
    Springer
    Mycopathologia 98 (1987), S. 35-40 
    Details
    ISSN: 1573-0832
    Keywords: dermatophytes ; survey ; United States ; humans ; 1982/84
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A survey of dermatophytes isolated from patients seeking medical advice was made from 1982 to 1984 in the United States. The survey included 59 locations with data from 49 cities and one state. Listing of the isolated dermatophytes and the frequency given by percentage of total follows: Trichophyton rubrum 46.8%, T. tonsurans 33.3%, T. mentagrophytes 10.1%, Microsporum canis 4.5%, Epidermophyton floccosum 3,5%, M. gypseum and T. verrucosum both 0.7%, M. audouinii and T. terrestre both 0.1%, and T. violaceum 0.06%. No isolations of M. ferrugineum or T. schoenleinii were reported. Temporal increases were observed for frequencies of T. mentagrophytes, T. tonsurans and M. canis, and decreases occurred for frequencies of E. floccosum and T. rubrum when the data from this survey were compared by the goodness of fit test to data of the 1979 to 1981 survey. The percent of dermatophyte isolations identified as T. tonsurans correlated significantly with the percentage of blacks in cities of 100000 or more people.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00431015
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  • 13
    Electronic Resource
    Electronic Resource
    Western migrants in central Europe: Isolated individuals or members of transnational communities? (2000)
    Springer
    GeoJournal 50 (2000), S. 105-108 
    Details
    ISSN: 1572-9893
    Keywords: community ; Czech Republic ; East Central Europe ; ethnicity ; migration ; Prague ; social exclusion ; transnationalism ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Abstract Migration flows from western Europe, the United States and Canada to east central Europe have received little attention so far. But numbers are now considerable and in the context of globalisation it seems appropriate to conceptualise communities of Westerners in terms of transnational social spaces as defined by Glick Schiller et al. Study of Americans in Prague reveals three main groups: enterprise managers, lifestyle migrants and entrepreneurs in small and medium-sized enterprises. All are engaged in a variety of different processes of community-building, often with clear trends towards a new transnationalism. Yet, the individual attempt to live in two societies is limited by the marked boundaries of the communities and by the degree of social exclusion which they experience from the majority population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007183532417
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  • 14
    Electronic Resource
    Electronic Resource
    Nitrogen fixation in hardwood forests of the northeastern United States (1980)
    Springer
    Plant and soil 54 (1980), S. 33-44 
    Details
    ISSN: 1573-5036
    Keywords: Acetylene reduction ; Harwood forests ; Nitrogen cycle ; Nitrogen fixation ; United States ; Wood litter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Nitrogen-fixing activity in hardwood forests of the northeastern United States occurred in wood litter, greater than 2 cm in diameter. Activity in large dead wood was independent of species, in the case of deciduous wood litter, but was restricted to partially decayed wood with a high moisture content. Maximum rates of activity were observed in the summer months, minimum rates in the winter. Evidence from six stands of varying ages showed that fixation in large wood litter occurred in only 25% of the samples assayed. Fixation was highest in the youngest, 4 years, and oldest, over 200 years, stands; being about 2 kg/ha/yr. The quantity of nitrogen fixed appears to be related to the biomass of dead wood. Large amounts of wood litter in the youngest stands were from slash left after cutting. As the supply of slash is exhausted by decay, nitrogen fixation decreases, with a low around year 20. Fixation then gradually increases as natural thinning adds wood to the litter compartment. Apparently, the amount of nitrogen fixed in dead wood the first 20 years following clearcutting can only replace a modest fraction of the amount lost as a result of the cutting and product removal. Finally, the results indicate that nitrogen fixation in wood litter does not equal nitrogen fixation in a northern hardwood forest calculated using a mass balance approach, suggesting that additional nitrogen inputs exist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02181997
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  • 15
    Electronic Resource
    Electronic Resource
    Campoletis sonorensis [Hym.: Ichneumonidae] as a parasitoid ofSpodoptera frugiperda [Lep.: Noctuidae]: Host stage preference and functional response (1985)
    Springer
    BioControl 30 (1985), S. 31-36 
    Details
    ISSN: 1573-8248
    Keywords: parasitoid,Campoletis sonorensis ; Ichneumonidae ; Spodoptera frugiperda ; Noctuidae temperature response ; density response ; United States ; Host stage preference
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Le potentiel du parasiteCampoletis sonorensis comme agent de limitation des populations deSpodoptera frugiperda (FAW) a été évalué face à six densités d'hôtes et à deux températures distinctes. Une réponse fonctionnelle de type II a été observée aux deux températures chez la femelle deC. sonorensis en réponse aux différentes densités de la larve de Noctuelle. Aux densités de 60 et 75, un plus grand nombre de larves a été parasité à 25°C qu'à 30°C. On a découvert que le troisième stade larvaire était choisi de préférence parC. sonorensis pour pondre.
    Notes: Abstract The response of the parasitoidCampoletis sonorensis (Cameron) as a natural control agent of the fall armyworm,Spodoptera frugiperda (J. E. Smith), was evaluated at 6 host densities and 2 temperature regime. A type-II functional response was exhibited by femaleC. sonorensis in response to varying densities of all armyworn larvae at both temperatures. Significantly more larvae were parasitized at 25°C for the host densities of 60 and 75, than for the same densities at 30°C. Third instar fall armyworm larvae were found to be the preferred stage for parasitization byC. sonorensis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372280
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  • 16
    Electronic Resource
    Electronic Resource
    New records for two mosquito predators [Turbellaria: Mesostoma] in the northeastern United States (1985)
    Springer
    BioControl 30 (1985), S. 83-85 
    Details
    ISSN: 1573-8248
    Keywords: Mosquitoes ; Culicidae ; Flatworms ; Mesostoma spp. ; predation ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Les observations accumulées indiquent que les larves des Plathelminthes mesostomides sont des prédateurs efficaces des larves de moustiques. Cette note présente les premières mentions de 3Mesostoma Ehrenberg incluant 2 prédateurs de moustiques.Mesostoma californicum Hyman,Mesostoma vernale Hyman, etMesostoma sp. cf.lingua Abildgaard furent découverts dans une mare temporaire du Massachusetts.M. californicum etM. sp. cf.lingua ont été reconnus comme des prédateurs efficaces des larves de moustiques.
    Notes: Abstract The accumulated data indicate that mesostomid flatworms are efficient predators of mosquito larvae. This paper presents the 1st published records for 3Mesostoma Ehrenberg, including 2 predators of mosquitoes.Mesostoma californicum Hyman,Mesostoma vernale Hyman, andMesostoma sp. cf.lingua Abildgaard were discovered in a temporary pool in Massachusetts.M. californicum andM. sp. cf.lingua were found to be efficient predators on mosquitoe larvae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372287
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