Bibliography and Index of the Sirenia and Desmostylia  

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"Piggins, David"

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 Piggins, David; Muntz, W. R. A.; Best, Robin Christopher (detail)
   
1983
Physical and morphological aspects of the eye of the manatee Trichechus inunguis Natterer 1883: (Sirenia: mammalia [sic]).
Mar. Behav. Physiol. 9(2): 111-129. 3 tabs. 3 figs.
–Examination of gross ocular anatomy, retinal histology, visual pigment, ocular refraction, and visual behavior in 5 animals showed a primarily rod retina, high receptor:ganglion cell ratio, low refractive error (hyperopia) under water, pigment based on vitamin A1, a difference spectrum of lambda max at 505 nm, a retina suited to low light levels, moderate visual acuity at best, motion perception, and a low degree of binocular vision. These results are compared with previous studies of T. manatus and Dugong.
 
 
 Piggins, David (detail)
   
1987
Through the eyes of a sea cow.
SCOPE (Brit. Assoc. Young Scientists Mag.), Issue No. 7: 4-7? 4 figs. Spring 1987.
–Pop. acc. of studying the eyesight of Amazonian manatees with Robin Best in Manaus [1977].
Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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