Les Cladocères littoraux de trois lacs des Laurentides à Saint-Hippolyte (Québec)

1975 ◽  
Vol 53 (12) ◽  
pp. 1898-1906 ◽  
Author(s):  
Fiorenza G. Margaritora ◽  
Etienne Magnin ◽  
Bernadette Pinel-Alloul
Keyword(s):  
North America ◽  
Important Species ◽  
Number Of Species ◽  
First Time ◽  
Littoral Species

Some littoral species of Cladocera of Quebec were studied in a series of samples collected from March to October 1974, in three lakes at the Biology Station of St. Hippolyte. Forty-three species of Cladocera are listed, bringing to 71 the number of species known in Quebec. Sixteen are described for the first time in this region; 2 of them, known in North America, are new ones for Canada (Alona circumfimbriata Megard and A. rustica americana Flössner and Frey). Also given are some ecological, biological, and systematic details concerning the most important species.

The botanical significance of Pehr Kalm's unpublished diaries for the flora of Quebec in the mid-eighteenth century

1978 ◽  
Vol 8 (4) ◽  
pp. 397-397
Author(s):  
PIERRE MORISSET
Keyword(s):  
Eighteenth Century ◽  
North America ◽  
Close Connection ◽  
Royal Swedish Academy ◽  
Number Of Species ◽  
Academy Of Sciences ◽  
First Time

Pehr Kalm's diaries of his travels in North America are now being edited for publication in their entirety for the first time. They contain a great deal of botanical data which were not included in the account En Resa til Norra America published by the Royal Swedish Academy of Sciences in three volumes, 1753–1761, and later transalted into English as Travels in North America by J. A. Forster, Warrington, 1770–1771. This paper analysed Kalm's botanical observations during his trip to Canada in the summer of 1749 and considered such matters as the number of species observed and described — many of which did not find their way into Linnaeus' Species Plantarum despite the close connection between the two men. Changes in the distribution of some species since 1749, the introduction of weeds and other aliens were also discussed.

Reassessment of the genus Catillochroma (lichenized Ascomycota, Ramalinaceae)

2010 ◽  
Vol 42 (5) ◽  
pp. 587-600 ◽  
Author(s):  
Alan M. FRYDAY ◽  
James C. LENDEMER
Keyword(s):  
North America ◽  
Type Species ◽  
New Combinations ◽  
Number Of Species ◽  
First Time

AbstractThe species assigned to the genus Catillochroma are reassessed. The two characters used to characterize Catillochroma, exciple anatomy and thalline chemistry, are shown to be variable and contradictory with a number of intermediates. Consequently, Catillochroma is reduced to synonymy with Megalaria, and the species previously placed in Catillochroma transferred, or returned, to Megalaria. As such, the following new combinations are proposed: Megalaria anaglyptica, M. endochroma, M. intermiscens and M. leptocheila. The genus Lopezaria is also shown to be related to Megalaria and to be closely related to the type species of Catillochroma, C. endochroma, and so is also reduced to synonymy with Megalaria. A number of species found to have been misplaced in Catillaria are also transferred to Megalaria: M. leucochlora, M. melanopotamica, M. obludens, M. pannosa and M. phaeolomiza. Megalaria imshaugii is reduced to synonymy with M. obludens, Megalaria pannosa is reported for the first time from North America and Lopezaria isidiza is reported for the first time from outside Asia from Jamaica.

Freshwater sponges (Porifera, Spongillidae) of eastern Canada: taxonomy, distribution, and ecology

1993 ◽  
Vol 71 (4) ◽  
pp. 665-682 ◽  
Author(s):  
Anthony Ricciardi ◽  
Henry M. Reiswig
Keyword(s):  
North America ◽  
Water Temperature ◽  
Recent Survey ◽  
Eastern Canada ◽  
Freshwater Sponges ◽  
Taxonomic Key ◽  
Number Of Species ◽  
Calcium And Magnesium ◽  
Distribution And Ecology ◽  
First Time

During a recent survey of the freshwater sponges of eastern Canada (from Ontario to Newfoundland), 15 species were recorded, representing approximately 50% of the total number of species known from North America. Radiospongilla crateriformis, Spongilla aspinosa, and Trochospongilla horrida are reported from Canada for the first time. Two problematic species, Corvosporigilla novaeterrae and Spongilla johanseni, are reviewed and their status is revised. Detailed notes on taxonomy, morphology, distribution, and ecology are given. New limits of tolerance with respect to pH, water temperature, and calcium and magnesium concentrations are established for several species. A taxonomic key to the freshwater sponges of eastern Canada is presented.

The application of Helotium to agarics. Part I. Nomenclature. Part II. Notes on selected species from Canada

1982 ◽  
Vol 60 (10) ◽  
pp. 1998-2013 ◽  
Author(s):  
S. A. Redhead
Keyword(s):  
North America ◽  
Type Species ◽  
Botanical Nomenclature ◽  
New Combinations ◽  
Important Species ◽  
Recent Collection ◽  
Generic Description ◽  
First Time ◽  
Current Code ◽  
Selection Of

The typification of Helotium Tode 1790, is detailed. Tode's comments in the protologue indicated that Helotium hirsutum Tode was the more important species upon which the generic description was based. The earliest explicit (lecto) typification was proposed by Fries in 1825. Fries's selection of Helotium gibbum Alb. & Schw. supports, by proxy, the acceptance of the original Helotium hirsutum as type now that both combinations are recognized as synonyms of each other. Evidence is presented to demonstrate that an attempt by Donk in 1962 to lectotypify Helotium with Helotium glabrum Tode was made arbitrarily, without direct reference to the protologue. A single recent collection is designated as neotype for both H. hirsutum and H. gibbum. Hemimycena crispula (Quél.) Singer is considered to be conspecific hence making the genus Hemimycena sensu Singer a later synonym of Helotium. Shortly after the publication of the name Helotium by Tode, the generic name was applied to both ascomycetes and basidiomycetes by Gmelin in 1792. The formal division of the genus into two, based on rules in the current code of botanical nomenclature, did not occur until 1805 when De Lamarck and De Candolle completed the process started by Persoon in 1799. The type species of Helotium Pers. apud D.L. &D.C. H. aciculare (Bull.) Pers. apud D.L. &D.C. was selected by Fries in 1818. Thirty-two new combinations are proposed in Helotium Tode for species which were mainly Hemimycena previously. Three invalid species names are validated in Helotium and two new names are proposed to avoid the creation of later homonyms. In addition, Helotium cyphelloides sp. nov. on Carex and Helotium nebulophilum sp. nov. on moss are described. Helotium substellatum (Kühner) comb. nov. is reported for the first time from North America and Helotium albicolor (A. H. Smith) comb. nov. with Helotium hirsutum for the first time in Canada. All five occur in British Columbia. Mycena litoralis A. H. Smith is considered to be a synonym of Helotium pseudocrispulum (Kühner) comb. nov. which is recognized for the first time in North America.

Effects of insecticides on adults and eggs of Drosophila suzukii (Diptera, Drosophilidae)

2017 ◽  
Vol 43 (2) ◽  
pp. 208 ◽  
Author(s):  
Daniele Cristine Hoffmann Schlesener ◽  
Jutiane Wollmann ◽  
Juliano De Bastos Pazini ◽  
Anderson Dionei Grützmacher ◽  
Flávio Roberto Mello Garcia
Keyword(s):  
North America ◽  
South America ◽  
Chemical Control ◽  
Stone Fruits ◽  
Drosophila Suzukii ◽  
Ovicidal Effect ◽  
Mere Presence ◽  
South Of Brazil ◽  
Different Cultures ◽  
First Time

Drosophila suzukii (Diptera, Drosophilidae) is an exotic species, endemic to Asia and currently a pest to small and stone fruits in several countries of North America and Europe. It was detected in 2013 for the first time in South America, in the south of Brazil. Unlike most drosophilids, this species deserves special attention, because the females are capable of oviposit inside healthy fruits, rendering their sale and export prohibited. Despite the confirmed existence of this species in different states of Brazil, this insect is yet been to be given the pest status. Nevertheless, the mere presence of this species is enough to cause concern to producers of small fruits and to justify further investigation for it’s control, especially chemical control for a possible change in status. Therefore, the goal of this work was to evaluate, in laboratory, mortality of D. suzukii adults and ovicidal effect when exposed to different insecticides registered for species of the Tephritidae and Agromyzidae families in different cultures. The insecticides deltamethrin, dimethoate, spinosad, fenitrothion, phosmet, malathion, methidathion, and zeta-cypermethrin resulted in mortality to 100 % of the subjects three days after the treatment (DAT). Regarding the effects over eggs, it was  established that the insecticides fenitrothion, malathion, and methidathion deemed 100 % of the eggs not viable, followed by phosmet and diflubenzuron, which also caused elevated reduction in the eclosion of larvae two DAT.

To the flora of сonjugates (Streptophyta, Conjugatophyceae) of the Valdai District area of the National Park «Valdaiskiy» (Novgorod Region, Russia)

2014 ◽  
Vol 48 ◽  
pp. 81-88
Author(s):  
A. F. Luknitskaya
Keyword(s):  
Species Distribution ◽  
National Park ◽  
Species Abundance ◽  
Water Bodies ◽  
Number Of Species ◽  
First Time

76 species, 3 varieties and 1 form from 21 genera of Streptophyta, Conjugatophyceae (Actinotaenium, Bambusina, Closterium, Cosmarium, Cylindrocystis, Euastrum, Gonatozygon, Haplotaenium, Micrasterias, Mougeotia, Netrium, Penium, Planotaenium, Pleurotaenium, Raphidiastrum, Spirogyra, Spirotaenia, Staurastrum, Staurodesmus, Tetmemorus, Xanthidium) were found in the basins of the Valdai District area of the National Park «Valdaiskiy» (Novgorod Region, Russia). The list of species is annotated with data on the species distribution in 55 collecting sites of 29 water bodies of the national park, and species abundance in collected samples according to Luknitskaya (2009). Among above mentioned genera, the genus Cosmarium is represented by the greatest number of species (20). Staurastrum chaetoceros has been found for the first time for the Novgorod Region.

Implications for the age of South African Devonian rocks in which Tropidoleptus (Brachiopoda) has been found

1983 ◽  
Vol 120 (1) ◽  
pp. 51-58 ◽  
Author(s):  
A. J. Boucot ◽  
C. H. C. Brunton ◽  
J. N. Theron
Keyword(s):  
South Africa ◽  
North America ◽  
South African ◽  
Early Carboniferous ◽  
Fossil Plants ◽  
Geological Time ◽  
Marine Sedimentation ◽  
History Of ◽  
Near Shore ◽  
First Time

SummaryThe Devonian brachiopod Tropidoleptus is recognized for the first time in South Africa. It is present in the lower part of the Witteberg Group at four widely separated localities. Data regarding the stratigraphical range of the genus elsewhere, combined with information on recently described fossil plants and vertebrates from underlying strata of the upper Bokkeveld Group, suggest that a Frasnian or even Givetian age is reasonable for the lower part of the Witteberg Group. The recognition of Tropidoleptus in a shallow water, near-shore, molluscan association, at the top of the South African marine Devonian sequence, is similar to its occurrence in Bolivia, and suggests a common Malvinokaffric Realm history of shallowing, prior to later Devonian or early Carboniferous non-marine sedimentation. It is noteworthy that Tropidoleptus is now known to occur in ecologically suitable environments around the Atlantic, but is absent from these same environments in Asia and Australia. Tropidoleptus is an excellent example of dispersal in geological time — first appearing in northern Europe and Nova Scotia, then elsewhere in eastern North America and North Africa, followed by South America and South Africa, while continuing in North America.

CHAETOCNEMA CONCINNA (MARSHAM, 1802), A EUROPEAN FLEA BEETLE INTRODUCED IN NORTH AMERICA (COLEOPTERA: CHRYSOMELIDAE: ALTICINAE)

1990 ◽  
Vol 122 (4) ◽  
pp. 647-650
Author(s):  
Laurent Lesage
Keyword(s):  
Nova Scotia ◽  
North America ◽  
Prince Edward Island ◽  
Host Plants ◽  
Flea Beetle ◽  
Collection Data ◽  
First Time

AbstractChaetocnema concinna (Marsham, 1802), a European flea beetle, is reported for the first time from Canada. Preliminary collection data indicate that it may feed on the same host plants as in Europe. It has been collected to date in Prince Edward Island, Nova Scotia, and Maine.

Procteria (Pachyprocteria) vermifera n. sp., an unusual Hicetes-bearing species of tabulate coral from the lower Eifelian of the Gaspé Sandstones Group, Rimouski County (Quebec, Canada)

2011 ◽  
Vol 48 (12) ◽  
pp. 1530-1542 ◽  
Author(s):  
Yves Plusquellec ◽  
Sylvain Desbiens ◽  
Rémy Gourvennec
Keyword(s):  
New Species ◽  
North America ◽  
Central Area ◽  
York River ◽  
Proximal Side ◽  
Unusual Association ◽  
Tabulate Coral ◽  
First Time

Procteria (Pachyprocteria) vermifera n. sp. is described from the upper part of the York River Formation (Gaspé Sandstones Group), lower Eifelian (brachiopod Amphigenia Zone), Rimouski County (Quebec, Canada). This new species is considered part of a new lineage of Pachyprocteria characterized by the presence of interstitial corallites. This study reveals for the first time that the granules on the lower (proximal) side are distributed irregularly, their density being higher in the central area of this side than at the periphery. The unusual association of the tabulate coral Procteria (Pachyprocteria) with the “worm” Hicetes is pointed out. The record of the new species adds to the known paleogeographic distribution of Pachyprocteria in North America (Laurussia).

scholarly journals THE GENUS PODISMA IN EASTERN NORTH AMERICA

1903 ◽  
Vol 35 (11) ◽  
pp. 295-302
Author(s):  
E. M. Walker
Keyword(s):  
North America ◽  
Eastern North America ◽  
High Latitudes ◽  
Old World ◽  
Number Of Species ◽  
Alpine Distribution

Podisma (Latr.) is a particularly interesting genus of Melanopli, since it is the only one of that immense group that occurs in the Old World, where, indeed, it is represented by considerably more described species than it is in North America. It is also of interest from its distinctly boreal and alpine distribution, being almost peculiar to high latitudes or altitudes. It is a circumpolar genus, inhabiting the mountains and boreal parts of Europe, Asia and North America, a larger number of species having been described from Europe than elsewhere.

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