Species diversity and seasonal dynamics of Acari on abandoned apple trees in southern Ontario, Canada

1990 ◽  
Vol 8 (1-2) ◽  
pp. 71-96 ◽  
Author(s):  
Hiroshi Amano ◽  
D. A. Chant
Keyword(s):  
Species Diversity ◽  
Seasonal Dynamics ◽  
Apple Trees ◽  
Southern Ontario

scholarly journals WATER MITES (ACARIFORMES: HYDRACHNIDIA, HALACAROIDEA) OF BOGS OF WESTERN SIBERIA (RUSSIA)

2018 ◽  
Vol 18 ◽  
pp. 102-109 ◽  
Author(s):  
Vitaly A. Stolbov ◽  
Victoria V. Popova ◽  
Sergei D. Sheikin ◽  
Sergei S. Tupitsyn
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Western Siberia ◽  
Water Bodies ◽  
Water Mites ◽  
Sphagnum Bogs ◽  
Temporary Water Bodies ◽  
Temporary Water

Water mites (Acariformes, Hydrachnidia, Halacaroidea) were studied in 8 different bogs and fens of Western Siberia. 28 species of Hydrachnidia and 5 species of Halacaridae were found in them. The species composition in the bogs was very different. In the fens the abundance and species diversity were higher than in sphagnum bogs and the fauna were based on spring species. The representatives of the halacarid mites dominated in sphagnum bogs, which were not found in the fens. The specific similarity of the studied bogs was low. At the same time, the peculiarities of seasonal dynamics in bogs and fens were similar and resembled temporary water bodies: high numbers in the spring and an abruptly decline in the summer, with a slight increase in autumn.

Seasonal Dynamics of Algal Biodiversity and Water Quality Assessment of Jiangsu Shilianghe Reservoir in China

2013 ◽  
Vol 807-809 ◽  
pp. 61-65
Author(s):  
Yuan Gao
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Cell Density ◽  
Seasonal Dynamics ◽  
Algal Cell ◽  
Water Quality Assessment ◽  
Wiener Index ◽  
Biological Indicators ◽  
Sand Mining ◽  
Rivers And Lakes

Analysis of 4 sampling surveys on Jiangsu Shilianghe reservoir in May, July and October of 2011 and January of 2012, 109 species of algae belonging to 7 divisions were totally identified. The green algae and diatoms were the main species while Euglena and Cryptomonas were rare. The algal cell density in each season was compared as follows: summer (63.77 × 1000000 / L) > autumn (61.87 ×1000000 / L) > spring (43.31 ×1000000 / L) > winter (37.922 ×1000000 / L). Algae Shannon-Wiener index and Pielou indexes of each season were compared and described as follows: summer (2.71, 0.41) > winter (2.09, 0.32) > autumn (2.05, 0.31) > spring (1.85, 0.28). The Margalef indexes of each season were compared as follows: summer (1.51) > spring (1.38) > autumn (1.19) > winter (0.86). The water quality was assessed as α-medium pollution according to biological indicators. Sand mining, cages and obstruction between rivers and lakes may be the main reasons that lead to high algal cell density and low index of species diversity.

Evaluation of species composition and seasonal dynamics of mosquito larvae in the Košice Basin during 2010 and 2011

Biologia ◽  
2013 ◽  
Vol 68 (2) ◽  
Author(s):  
Eva Bocková ◽  
Alica Kočišová ◽  
Helena Hlavatá
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Culex Pipiens ◽  
Mosquito Species ◽  
Mosquito Larvae ◽  
Aedes Vexans ◽  
Anopheles Maculipennis

AbstractIn six sites in the Košice Basin we collected 17,520 larvae of 15 mosquito species during the seasons (April–August) of 2010 and 2011. They were: Aedes vexans (Meigen, 1830), Ae. cinereus (Meigen, 1818) [or Ae. rossicus (Dolbeskin, Gorickaja & Mitrofanova, 1930], Ochlerotatus geniculatus (Olivier, 1791), Oc. refiki (Medschid, 1928), Oc. rusticus (Rossi, 1790), Oc. sticticus (Meigen, 1838), Oc. punctor (Kirby, 1837), Oc. cataphylla (Dyar, 1916), Oc. cantans (Meigen, 1818)[or Oc. annulipes (Meigen, 1830)], Oc. communis (De Geer, 1776), Oc. flavescens (Müller, 1764), Oc. leucomelas (Meigen, 1804), Culiseta annulata (Schrank, 1776), Culex pipiens (L., 1758) [or Cx. torrentium (Martini, 1925)] and Anopheles maculipennis s.l. The objective of the present research was to identify the mosquito larvae species diversity and compare their distribution and density in urban and suburban localities of the monitored territory.

STATUS OF PREDATORS OF THE ADULT APPLE MAGGOT, RHAGOLETIS POMONELLA (DIPTERA: TEPHRITIDAE), IN ONTARIO

1972 ◽  
Vol 104 (2) ◽  
pp. 257-262 ◽  
Author(s):  
L. G. Monteith
Keyword(s):  
Fruit Fly ◽  
Rhagoletis Pomonella ◽  
Apple Trees ◽  
Southern Ontario

AbstractAdult apple maggots, Rhagoletis pomonella (Walsh), were relatively free from attacks by predators in southern Ontario. The main reason for this was the flies’ alert avoidance of approaching objects. In addition to this protection from predators, the flies appeared to be avoided by hunting spiders. Adults of the cherry fruit fly, Rhagoletis cinqulata (Loew), were equally alert and apparently free from predation while they were in apple trees.

scholarly journals Millipede and centipede assemblages on the northern and southern slopes of the lowland Altais, southwestern Siberia, Russia (Diplopoda, Chilopoda)

ZooKeys ◽  
2018 ◽  
Vol 741 ◽  
pp. 219-254 ◽  
Author(s):  
Pavel S. Nefediev ◽  
Gyulli Sh. Farzalieva ◽  
Ivan H. Tuf ◽  
Khozhiakbar Kh. Nedoev ◽  
Saparmurad T. Niyazov
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Vertical Distribution ◽  
Age Structure ◽  
Seasonal Dynamics ◽  
Total Species Richness ◽  
Southwestern Siberia ◽  
First Time ◽  
Total Species ◽  
Specific Identity

The total species richness in the myriapod assemblages of the lowland Altais near Charyshskoe Village, Altai Province, southwestern Siberia, Russia is estimated to be at least 19 species from ten genera, eight families, five orders, and two classes. The following species are new to SW Siberia: Lithobius (Ezembius) ostiacorum Stuxberg, 1876,L. vagabundusStuxberg, 1876, and L. (Monotarsobius) nordenskioeldii Stuxberg, 1876, while L. (E.) proximus Sseliwanoff, 1880 and L. (M.) insolens Dányi & Tuf, 2012 are recorded for the first time from the Altai Province of Russia. A species ofStrigamiawhich is morphologically similar to Strigamia cf. transsilvanica (Verhoeff, 1928) has been found in the study area but its true specific identity is yet to be determined. The seasonal dynamics of myriapod assemblages in terms of the species diversity, density, sex-age structure, and vertical distribution along the soil profile have been studied with regard to the different slope exposures.

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