Temporal Distribution, Biology and Life History of the Cotton Tipworm, Crocidosema Plebiana Zeller, on Cotton in the South-Eastern Queensland Region.

1978 ◽  
Vol 26 (1) ◽  
pp. 147 ◽  
Author(s):  
AL Bishop ◽  
PRB Blood

Data are presented from a three-season study of the seasonal abundance, biology and life history of C. plebeiana, which affects cotton during its establishment and early fruiting phases in the south-east Queensland region. Results suggest that if insecticidal control of tipworm is necessary it should be initiated during the egg stage.

Author(s):  
А.П. ЛАКТИОНОВ ◽  
Е.В. МАВРОДИЕВ

The history of the putative endemic of the Lower Volga valley (the South-Eastern European Russia) Rorippa wolgensis Fursajev ex Laktionov et Mavrodiev nom. nov. is briefly discussed.


2016 ◽  
Vol 57 (72) ◽  
pp. 128-141 ◽  
Author(s):  
Sverrir Aðalsteinn Jónsson ◽  
Ívar Örn Benediktsson ◽  
Ólafur Ingólfsson ◽  
Anders Schomacker ◽  
Helga Lucia Bergsdóttir ◽  
...  

ABSTRACTFláajökull is a non-surging outlet glacier draining the south-eastern part of the Vatnajökull, southeast Iceland. Fláajökull was stationary or advanced slightly between 1966 and 1995 and formed a prominent end moraine. Glacial retreat since then has revealed a cluster of 15 drumlins. This study focuses on the morphology and sedimentology of the drumlins. They are 100–600 m long, 40–130 m wide, and have cores of glaciofluvial sediment or till. The drumlins are draped by ~1 m thick, massive subglacial traction till. The glacier forefield is characterized by a number of arcuate and saw-tooth, terminal and recessional moraine ridges, overridden moraines with fluted surfaces, and glaciofluvial outwash. Some of the drumlins extend towards the 1995 end moraine but terminate abruptly at the moraine and are not observed in front of it. This suggests that they were formed sub-marginally during the 1966–1995 terminal position. The sedimentary structure of the drumlins is best explained by the sticky spot model. Dating and dendrochronological analyses of birch logs found on the surface of one of the drumlins indicate that the valley was forested about 2100 calendar year BP, after which the glacier started to reform, possibly due to an abrupt change in climate.


1991 ◽  
Vol 1 (1) ◽  
pp. 33-45 ◽  
Author(s):  
Steven M. Goodman ◽  
Thomas S. Schulenberg

SummaryThe Red-tailed Newtonia Newtonia fanovanae, previously known from a single specimen from the eastern rainforest of central Madagascar, was rediscovered in October 1989 in the Marosohy Forest in the south-east of the island. In the study area, N. fanovanae occurs in the middle and upper section of the canopy of humid forest between 300 and 1,300 m. Ecological relationships with the other two sympatric Newtonia, amphichroa and brunneicauda, are discussed. The main morphological differences between fanovanae and the other two sympatric species are that the former has relatively long wings and short tarsi. The song of fanovanae is described and compared to other members of the genus. Our observations on the morphology, behaviour and vocalisations of N. fanovanae confirm its validity as a species.Le Newtonie à queue rouge Newtonia fanovanae jusqu'à presént uniquement connu d'un seul spécimen provenant de la partie orientale de la forêt tropicale du Madagascar central, fût redécouvert en octobre 1989 dans la forêt de Marosohy au sud-est de l'île. N. fanovanae fût rencontré dans les parties moyennes et supérieures du feuillage de la forêt humide entre 300 et 1,300 m d'altitude. Les relations écologiques avec les deux espèces sympatriques de Newtonia, amphichroa et brunneicauda sont discutées. Les différences morphologiques principales entre fanovanae et les deux espéces sympatriques sont que celle-ci a des ailes relativement longues et des tarses courts. Le chant de fanovanae est decrit et comparé avec celui d'autres membres du genre. Nos observations sur la morphologie, le comportement et les vocalizations de N. fanovanae confirment sa validité comme bonne espéce.


Inner Asia ◽  
2002 ◽  
Vol 4 (2) ◽  
pp. 361-373
Author(s):  
Elke Studer

AbstractThe article outlines the Mongolian influences on the biggest horse race festival in Nagchu prefecture in the Tibetan Autonomous Region (TAR).Since old times these horse races have been closely linked to the worship of the local mountain deity by the patrilineal nomadic clans of the South-Eastern Changthang, the North Tibetan plain. In the seventeenth century the West Mongol chieftain Güüshi Khan shaped the history of Tibet. To support his political claims, he enlarged the horse race festival's size and scale, and had his troops compete in the different horse race and archery competitions in Nagchu. Since then, the winners of the big race are celebrated side by side with the political achievements and claims of the central government in power.


1956 ◽  
Vol 47 (2) ◽  
pp. 205-214 ◽  
Author(s):  
Elsie Collyer

A number of predacious mites of the PHYTOSEIINAE (family LAELAPTIDAE), found in south-eastern England, mostly in association with fruit trees, are listed. Certain measurements and other characters that are of value in separating species are given. The species found were: Typhlodromus tiliae Oudm., T. cucumeris Oudm., T. tiliarum Oudm., T. rhenanus (Oudm.), T. finlandicus (Oudm.), T. umbraticus Chant, T. massei Nesbitt, T. vitis Oudm., T. soleiger (Ribaga), Phytoseius macropilis (Banks) and two Amblyseius spp. Of these, T. tiliae, T. finlandicus and P. macropilis are normally abundant on apple trees, but only T. tiliae remains abundant on commercially-grown apple trees. For each species a list of plants on which it has been found is given.Details of the life-history of laboratory-reared mites are given and these, together with counts of field populations, show that three generations a year is normal.Predacious phytoseiine mites feed on several species of TETRANYCHIDAE, including Metatetranychus ulmi (Koch) and Tetranychus telarius (L.); when M. ulmi is supplied in adequate numbers, adults of T. tiliae consume 3 mites per day, the nymphs 2 mites per day, on an average. It is thought that they also feed on plant tissue, since individuals survived in the laboratory for a considerable length of time in the absence of phytophagous mites, though eggs were not laid.


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