Diversity and Spatial Distribution of Predatory Mites with special Reference to Neoseiulus longispinosus (Evans) (Acari: Phytoseiidae)

2019 ◽  
Vol 27 (1) ◽  
pp. 18
Author(s):  
K. Sankara Rao ◽  
R. Vishnupriya ◽  
K. Ramaraju
Keyword(s):  
Spatial Distribution ◽  
Special Reference ◽  
Predatory Mites ◽  
Neoseiulus Longispinosus

The Spatial Distribution of Cocoons of Neodiprion swainei Middleton in a Jack Pine Stand: I. A Cartographic Analysis of Cocoon Distribution, With Special Reference to Predation by Small Mammals

1966 ◽  
Vol 98 (4) ◽  
pp. 430-447 ◽  
Author(s):  
J. M. McLeod
Keyword(s):  
Spatial Distribution ◽  
Special Reference ◽  
Small Mammals ◽  
Forest Floor ◽  
Jack Pine ◽  
Tree Density ◽  
Pine Sawfly ◽  
Insight Into

AbstractInsight into the source of aggregation in the spatial distribution of cocoons of the Swaine jack-pine sawfly, Neodiprion swainei Middleton was gained by the use of special techniques enabling the sampling of units of forest floor in contiguous 2 × 2-inch square samples, as well as by randomized one-square-foot samples taken over a larger area. It was concluded that cocoon distribution is initially random but marked aggregation results from the subsequent transportation of cocoons into feeding stations by predacious small mammals, mostly of the genus Sorex. The feeding stations tended to be distributed near decaying stems and stumps on the forest floor, a factor which augmented the extent of aggregation. Of cocoons not preyed upon by small mammals, slightly higher counts were recorded directly under crown canopies as opposed to open areas, at a tree density of approximately 920 per acre.

scholarly journals Changes in the Socio-Economic Pattern of Spanish-American Cities With Special Reference to Colonial Town Centres

2013 ◽  
pp. 85-96 ◽  
Author(s):  
E. Gormsen
Keyword(s):  
Spatial Distribution ◽  
Social Structure ◽  
Special Reference ◽  
Lower Class ◽  
Social Classes ◽  
Upper Class ◽  
Spanish American ◽  
Residential Areas ◽  
American Cities

This paper outlines some of the key changes in the spatial distribution of functions and social classes in Spanish-American cities, with Puebla, Mexico, used as a case study. Among the factors which influence the future of the cities is the changing social structure of the inner zone. Upper class families have moved into modern residential areas while their large colonial patio-houses have been transformed into lower class multi-family quarters known as vecindades.

scholarly journals Natural regeneration of beech in mixed stands of beech and fir with spruce (Piceo-Abieti-Fagetum) in the virgin forest "Perucica"

2008 ◽  
pp. 107-126
Author(s):  
Zoran Govedar ◽  
Zoran Stanivukovic
Keyword(s):  
Spatial Distribution ◽  
Special Reference ◽  
Natural Regeneration ◽  
Stand Structure ◽  
Stand Development ◽  
Mixed Stands ◽  
Development Stages ◽  
Virgin Forest ◽  
Lateral Shoots ◽  
Young Growth

Natural regeneration of beech in mixed stands of beech and fir was researched in the virgin forest Perucica, e.g. the basic elements of stand structure with special reference to beech regeneration characteristics, and the regeneration process in the conditions of broken stand canopy. The analysis included the stand development stages in he virgin forest based on the elements of structure, as well as the silvigenetic phases on a transect 10?100 m. The characteristics of beech regeneration (abundance, height, crown size, length of apical and lateral shoots) were measured on the selected regeneration areas (initial regeneration gaps). The silvigenetic phases on the transect and the interdependence of beech regeneration characteristics were assessed based on regeneration characteristics, ways of occurrence and spatial distribution of the young growth.

scholarly journals Morphological ontogeny and molecular analyses of geographic strains of two closely related Neoseiulus species (Acari: Phytoseiidae)

Acarologia ◽  
2021 ◽  
Vol 61 (2) ◽  
pp. 432-452
Author(s):  
Mohamed W. Negm ◽  
Tomoko Matsuda ◽  
Takumi Kayukawa ◽  
Chyi-Chen Ho ◽  
Yu-Tzu Hsu ◽  
...  
Keyword(s):  
Ribosomal Dna ◽  
Related Species ◽  
Molecular Data ◽  
Predatory Mites ◽  
Nuclear Ribosomal Dna ◽  
Immature Stages ◽  
Closely Related Species ◽  
Molecular Analyses ◽  
Neoseiulus Longispinosus ◽  
Morphological And Molecular Data

The predatory mites, Neoseiulus longispinosus (Evans) and N. womersleyi (Schicha) (Phytoseiidae) are two morphologically close species. Although they can be mainly separated by the length of the dorsal seta S5, misidentifications may occur. The present study investigated various strains of the two closely related species collected from Japan, Taiwan and/or Thailand using a combination of morphological and molecular data. We described and illustrated the adults and immature stages. We also sequenced the 28S region of nuclear ribosomal DNA to determine whether these strains represent different species. The two species could be clearly separated based on the length of seta S5 and the ratio of setae Z5/S5. In a 28S tree, the examined strains also formed separate clades with 100% bootstrap values. We conclude that a combination of different methods is often necessary to precisely distinguish these closely related taxa.

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