A Comparative Study on the Fine Structure of Flight Mu;scle of Mature Male and Female (Orthoptera Pyrogomorphidae)

1993 ◽  
Vol 5 (1) ◽  
pp. 47-64 ◽  
Author(s):  
A. AL-ROBAI ◽  
A. ASSAGAF ◽  
M. MAHMOOD
Keyword(s):  
Fine Structure ◽  
Comparative Study ◽  
Mature Male ◽  
Male And Female

A Comparative Study of Aggression Between Male and Female Boxers of Amroha District

2018 ◽  
Vol 13 (1) ◽  
pp. 45-46
Author(s):  
Devendra Prakash ◽  
(Mrs.) Anu Kumari ◽  
Bijendra Singh
Keyword(s):  
Comparative Study ◽  
Male And Female

A Comparative Study of Male and Female Opium Addicts Among the Hmong (Meo*)

Addiction ◽  
1978 ◽  
Vol 73 (2) ◽  
pp. 181-187 ◽  
Author(s):  
Joseph Westermeyer ◽  
Grace Peng
Keyword(s):  
Comparative Study ◽  
Male And Female

scholarly journals Chemical composition of volatiles from male and female specimens of Baccharis trimera collected in two distant regions of southern brazil: a comparative study using chemometrics

Química Nova ◽  
2013 ◽  
Vol 36 (8) ◽  
pp. 1096-1100 ◽  
Author(s):  
Michele Aparecida Besten ◽  
Domingos Sávio Nunes ◽  
Alberto Wisniewski Jr. ◽  
Sávio Luis Sens ◽  
Daniel Granato ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Southern Brazil ◽  
Male And Female ◽  
Baccharis Trimera

A Comparative Study of the Behaviour of Six Taxa of Male and Female Gerbils (Rodentia) in Intra- and Interspecific Encounters

Ethology ◽  
2010 ◽  
Vol 91 (1) ◽  
pp. 25-45 ◽  
Author(s):  
Edith R. Dempster ◽  
R. Dempster ◽  
M. R. Perrin
Keyword(s):  
Comparative Study ◽  
Male And Female

Fine structure of the compound eye of the black fly Simulium vittatum (Diptera: Simuliidae)

1987 ◽  
Vol 65 (6) ◽  
pp. 1454-1469 ◽  
Author(s):  
Gail E. O'Grady ◽  
Susan B. McIver
Keyword(s):  
Fine Structure ◽  
Compound Eye ◽  
Sensory Receptor ◽  
Dorsal Region ◽  
Male And Female ◽  
Simulium Vittatum ◽  
Transmission Electron ◽  
Accessory Pigment ◽  
Open Rhabdom ◽  
Retinular Cells

The fine structure of the ommatidia in light- and dark-adapted eyes of male and female Simulium vittatum Zetterstedt was investigated using scanning and transmission electron microscopy. The male eye is divided into distinct dorsal and ventral regions. The facets in the dorsal region are approximately two times larger than those in the ventral one, which are similar in size to the ones in the female eye. All ommatidia of S. vittatum examined consist of two general regions: a distal dioptric apparatus with bordering primary and accessory pigment and Semper cells, and a sensory receptor layer. Each ommatidium in the female eye and ventral eye of the male has eight retinular cells (R cells): six peripheral (R1–6) and two central (R7, R8). R7 occurs distally and R8 basally. Strikingly, the ommatidia in the dorsal eye of the male lack the R7 cell. In all ommatidia, rhabdomeres on the inner surface of the peripheral R cells are separate throughout their length, creating an open rhabdom. A greater diameter of corneal facets, elongated peripheral R cells, and perhaps the lack of the R7 cell are specializations of the dorsal region of the eye that help the male to detect small, rapidly moving females against the skylight as they fly above the swarm of males. Differences observed between light- and dark-adapted eyes of male and female S. vittatum were the same and were associated with the internal components of the peripheral R cells.

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