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Filter Total Items: 3383

Homestead tree planting in two rural Swazi communities

Tree planting practices were investigated on a total of 95 homesteads in two communities in rural Swaziland. Information was also collected on socioeconomic characteristics of the homesteads. In both the study areas, Sigombeni and Bhekinkosi, there was considerable variation amongst individual homesteads in size, relative wealth (as indicated by cattle and motor vehicle ownership), and amount and
Authors
James A. Allen

Influence of ingested lead on body mass of wintering canvasbacks

We determined the prevalence of lead shotgun pellets in gizzards of canvasbacks (Aythya valisineria) collected at Catahoula Lake and the Mississippi River Delta, Louisiana, during winter 1987-88 to assess the influence of ingested lead shot on canvasback body mass. The prevalence of ingested lead shot was significantly higher at Catahoula Lake (27%) than at the Mississippi River Delta (4%). Canvas
Authors
William L. Hohman, Ronald D. Pritchert, Richard M. Pace, Dennis W. Woolington, Robert Helm

Carangidae

No abstract available.
Authors
W. F. Smith-Vaniz, J.C. Quero, M. Desoutter

Status of exotic fish in the United States

Abstract not supplied at this time
Authors
Dawn P. Jennings, J.D. Williams

Don't release exotic fish

Abstract not supplied at this time
Authors
Dawn P. Jennings, J.D. Williams

[Book review] Amphibians and Roads, edited by T.E.S. Langton

Review of: Amphibians and Roads: Toad Tunnel Conference Proceedings. Langton, T. E. S., editor. 1989. ACO Technologies PLC. 202 p. ISBN: 0951517201.
Authors
C. K. Dodd

Distribution of annual fishes (Pisces-Rivulidae) in the Rio Unare basin, Venezuela

Abstract not supplied at this time
Authors
J.E. Thomerson, D.C. Taphorn, L.G. Nico

Regional brain morphometry and lissencephaly in the Sirenia

Neuroanatomical structure was examined in the brains of West Indian manatees (Trichechus manatus) using computer-based morphometric methods. Although manatees have a small relative brain size, volume estimates of the major brain regions indicate that the telencephalon comprises 71% of totalbrain volume and is 90% cerebral cortex. These values are comparable to those seen among a diversity of taxa
Authors
Roger L. Reep, Thomas J. O'Shea

Encephalization quotients and life-history traits in the Sirenia

Relative brain size in the Sirenia is unusually small. Encephalization quotients are 0.27 for Florida manatees (Trichechus manatus) and 0.38 for dugongs (Dugong dugon). Estimates for Steller's sea cow (Hydrodamalis gigas) range from 0.12 to 0.19. These values are among the lowest known for Recent mammals, and seemingly have changed little since the Eocene. A body plan specialized for the aquatic e
Authors
T. J. O'Shea, R.L. Reep