Biology of the Antarctic Seas V

About The Product

Published through the yankee Geophysical Union as a part of the Antarctic study Series.

The Antarctic study sequence, an outgrowth of analysis performed within the Antarctic throughout the foreign Geophysical 12 months, used to be started early in 1963 with a provide from the nationwide technology origin to AGU. it's a ebook sequence designed to serve scientists and graduate scholars actively engaged in Antarctic or heavily similar examine and others versed within the organic or actual sciences. It presents a continual, authoritative medium for the presentation of intensive and special medical examine effects from Antarctica, quite the result of the us Antarctic learn application. this actual quantity comprises four papers.


Show description

Read or Download Biology of the Antarctic Seas V PDF

Similar biology books

Transgenic Crops IV (Biotechnology in Agriculture and Forestry, Vol. 59)

Genetic engineering is a robust instrument for crop development. Crop biotechnology ahead of 2001 was once reviewed in Transgenic vegetation I-III, yet fresh advances in plant telephone and molecular biology have caused the necessity for brand new volumes. Transgenic vegetation IV bargains with cereals, greens, root vegetation, herbs and spices.

Additional info for Biology of the Antarctic Seas V

Sample text

A t o n e pole of the central capsule there is a t u b u l a r m a i n o p e n i n g (the astropyle) in the c e n t e r o f a c o n i c a l radiate o p e r c u l u m . A c c e s s o r y o p e n i n g s (the p a r a p y l a e ) are c o m m o n l y present on the pole opposite the astropyle. The extracapsular c y t o p l a s m h a s a large m a s s of inclusions (the p h a e o d i u m ) w i t h dark p i g m e n t e d bodies (the p h a e o d e l l a e ) . T h e s k e l e t o n m a y be l a c k i n g .

Copyright American Geophysical Union Antarctic Research Series Biology of the Antarctic Seas V 26 Vol. 23 BIOLOGY OF THE ANTARCTIC SEAS V g e n u s Aulactinium, which have been reported only by H a e c k e l , are said to l a c k the external veil of needles. T h e o t h e r l a r g e r a n d m o r e distinctive types of skeletal e l e m e n t s in A u l a c a n t h i d a e are the hollow radial tubes. In living and p r e s e r v e d s p e c i m e n s t h e p r o x i m a l ends of these tubes g e n e r a l l y c o n v e r g e at the central capsule.

Dogiel and R e s c h e t n j a k , 1 9 5 2 , p. 2 0 . — R e s c h e t n j a k , 1955, p. 98; 1965, p. 76; 1966, p. 107, fig. 34. Description. T h e radial tubes are cylindrical, straight, or slightly c u r v e d or undulant and are a b o u t the s a m e width t h r o u g h o u t their length. In s o m e i n s t a n c e s the distal s u b c o r o n a l portion of the radial tubes m a y be slightly inflated. T h e ter­ m i n a l b r a n c h e s of the c r o w n are variable in size a n d n u m b e r .

Download PDF sample

Rated 4.81 of 5 – based on 22 votes