A New Attachment Device for Radio-Tagging Large Whales

1983 ◽  
Vol 47 (3) ◽  
pp. 868 ◽  
Author(s):  
Bruce R. Mate ◽  
James T. Harvey ◽  
Lawrence Hobbs ◽  
Romaine Maiefski
Keyword(s):  
Attachment Device ◽  
Radio Tagging

scholarly journals Demographic estimates from radio-tagging: models of age-specific survival and breeding in the goshawk

1999 ◽  
Vol 68 (5) ◽  
pp. 1020-1033 ◽  
Author(s):  
R. E. Kenward ◽  
V. Marcstrom ◽  
M. Karlbom
Keyword(s):  
Radio Tagging

scholarly journals A Manual for Wildlife Radio Tagging

The Auk ◽  
2001 ◽  
Vol 118 (3) ◽  
pp. 812-815 ◽  
Author(s):  
Joshua J. Millspaugh
Keyword(s):  
Radio Tagging

scholarly journals Finger-attachment device for the feedback of gripping and pulling force in a manipulating system for brain tumor resection

2017 ◽  
Vol 13 (1) ◽  
pp. 3-12 ◽  
Author(s):  
Hiroyuki Chinbe ◽  
Takeshi Yoneyama ◽  
Tetsuyou Watanabe ◽  
Katsuyoshi Miyashita ◽  
Mitsutoshi Nakada
Keyword(s):  
Brain Tumor ◽  
Tumor Resection ◽  
Attachment Device ◽  
Brain Tumor Resection ◽  
Pulling Force

Hybocrinid and disparid crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota

1992 ◽  
Vol 66 (6) ◽  
pp. 973-993 ◽  
Author(s):  
James C. Brower
Keyword(s):  
Multivariate Statistics ◽  
Supply Rate ◽  
Middle Ordovician ◽  
Crown Volume ◽  
Food Particles ◽  
Attachment Device ◽  
Short Covering ◽  
Tube Feet

Four hybocrinid and disparid crinoids from the Middle Ordovician Dunleith Formation (Galena Group) of northern Iowa and southern Minnesota are described: Hybocrinus conicus Billings, Ohiocrinus levorsoni n. sp., Caleidocrinus (Huxleyocrinus) gerki n. sp., and Ectenocrinus simplex (Hall). The first three taxa are rare. Ectenocrinus simplex is an abundant and protean form ranging from the Shermanian to the Maysville and from the Appalachians to the Midcontinent. One Middle Ordovician specimen from the Dunleith is a complete small adult with stem and a lichenocrinid holdfast. The column was largely upright with the crown located about 25 cm above the seafloor. The Middle Ordovician crinoids differ somewhat from the later Cincinnatian material where only young E. simplex exhibit lichenocrinid holdfasts. Older crinoids became detached and were eleutherozoic well before the column was 25 cm long. Thus, the Cincinnatian individuals lost the attachment device earlier during ontogeny than their ancestors in the Middle Ordovician. Unlike most associated crinoids, E. simplex formed a roughly conical filtration net. The arms of E. simplex are extensively branched. Ten main arms bear unbranched ramules on alternate brachials, and the arm structure converges on the pinnulate pattern. Narrow food grooves and short covering plates are present. Analogies with living crinoids indicate that small food particles were caught by small and close-spaced tube-feet. The formation of new plates and ramules at the arm tips increases the size of the food-gathering system throughout ontogeny. The food-gathering capacity comprises the number of food-catching tube-feet times the width of the food grooves, and it measures the number and size of food particles that can be caught. Both size and capacity of the food-gathering system are positively allometric compared to crown volume and the amount of tissue that must be nourished. This is mainly caused by the addition of new ramules at the arm tips, which generates an exponentially increasing plate supply rate. Examination of numerous specimens from various geographic and stratigraphic horizons with multivariate statistics shows that the species was homogeneous throughout its range aside from the differences in living habits mentioned above.

Sign in / Sign up

Export Citation Format

Share Document