scholarly journals Reproductive Biology of Thrips Insect Species and Their Reproductive Manipulators

2021 ◽  
Vol 3 (23) ◽  
pp. 287-304
Author(s):  
Wondiameggn Atilaw Woldemelak
Keyword(s):  
Reproductive Biology ◽  
Insect Species

Reproductive Biology of Two Nontarget Insect Species,Aphis gossypii(Homoptera: Aphididae) andOrius sauteri(Hemiptera: Anthocoridae), onBtand non-BtCotton Cultivars

2008 ◽  
Vol 37 (4) ◽  
pp. 1035-1042 ◽  
Author(s):  
Gui-Fen Zhang ◽  
Fang-Hao Wan ◽  
Sean T. Murphy ◽  
Jian-Ying Guo ◽  
Wan-Xue Liu
Keyword(s):  
Reproductive Biology ◽  
Aphis Gossypii ◽  
Insect Species

New Afrotropical scale insect pests (Homoptera: Coccinea) under glass in St Petersburg, Russia

2016 ◽  
Vol 25 (2) ◽  
pp. 233-238 ◽  
Author(s):  
I.A. Gavrilov-Zimin ◽  
D.A. Gapon
Keyword(s):  
Reproductive Biology ◽  
Insect Pests ◽  
Scale Insect ◽  
Insect Species ◽  
Chromosomal Number ◽  
First Time

Two Afrotropical scale insect species, Trochiscococcus speciosus (De Lotto, 1961) and Ripersiella aloes (Williams et Pellizzari, 1997), are recorded for the first time in Russia, St Petersburg, under glass on the roots of Gasteria sp. (Asphodelaceae). The first species is morphologically described and illustrated by a standard total coccidological figure and by the photograph; a study of the reproductive biology of this species revealed an obligate ovoviviparity, parthenogenesis (thelytoky) and the chromosomal number 2n=10. The quarantine status for both species is advised on the territory of Russia and neighbouring countries.

Fine structure and possible functions of the hermaphrodite duct of some pulmonate snails (Mollusca: Gastropoda)

1990 ◽  
Vol 48 (3) ◽  
pp. 68-69
Author(s):  
Alan N. Hodgson
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Fine Structure ◽  
Seminal Vesicle ◽  
Reproductive Biology ◽  
Light Microscope ◽  
Light Microscope Level ◽  
Transmission Electron ◽  
Standard Techniques

The hermaphrodite duct of pulmonate snails connects the ovotestis to the fertilization pouch. The duct is typically divided into three zones; aproximal duct which leaves the ovotestis, the middle duct (seminal vesicle) and the distal ovotestis duct. The seminal vesicle forms the major portion of the duct and is thought to store sperm prior to copulation. In addition the duct may also play a role in sperm maturation and degredation. Although the structure of the seminal vesicle has been described for a number of snails at the light microscope level there appear to be only two descriptions of the ultrastructure of this tissue. Clearly if the role of the hermaphrodite duct in the reproductive biology of pulmonatesis to be understood, knowledge of its fine structure is required.Hermaphrodite ducts, both containing and lacking sperm, of species of the terrestrial pulmonate genera Sphincterochila, Levantina, and Helix and the marine pulmonate genus Siphonaria were prepared for transmission electron microscopy by standard techniques.

Preliminary Results on Aquatic Insects in the Me Linh Station for Biodiversity, Vinh Phuc Province

2017 ◽  
Vol 33 (4) ◽  
Author(s):  
Nguyen Van Hieu ◽  
Nguyen Van Vinh
Keyword(s):  
Quantitative Analysis ◽  
Aquatic Insects ◽  
Field Survey ◽  
Aquatic Insect ◽  
Insect Species ◽  
Functional Feeding Groups ◽  
Species Number ◽  
Feeding Groups ◽  
Preliminary Results

An intensive field survey on aquatic insects of Me Linh Station for Biodiversity in Vinhphuc province was conducted in December 2015. Specimens were collected at 8 different sites and aquatic insects were collected both quantitatively by Surber net and qualitatively by hand net, pond net. As a result, a total of 110 aquatic insect species belonging to 98 genera, 49 families and 9 orders were recognized. Among these, the order Ephemeroptera had the highest species number with 26 species, followed by Odonata with 25 species, Trichoptera with 18 species, Coleoptera with 15 species, Hemiptera with 11 species, Diptera with 9 species. Lepidoptera, Plecoptera and Megaloptera had the lowest of species number, represented by 3 species of Lepidoptera, 2 species of Plecoptera and 1 species of Megaloptera. Besides, the quantitative analysis results and the functional feeding groups were provided.

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