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Influence of ingested lead on body mass of wintering canvasbacks 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...
Authors
William L. Hohman, Ronald D. Pritchert, Richard M. Pace, Dennis W. Woolington, Robert Helm

Carangidae Carangidae

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

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

Regional brain morphometry and lissencephaly in the Sirenia 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...
Authors
Roger L. Reep, Thomas J. O’Shea

Feeding chronology of juvenile piranhas, Pygocentrus notatus, in the Venezuelan llanos Feeding chronology of juvenile piranhas, Pygocentrus notatus, in the Venezuelan llanos

During the 1988 rainy season, I studied the 24 h feeding chronology of juvenile (40–68 mm standard length) piranhas, Pygocentrus notatus (Characidae: Serrasalminae) from a natural population inhabiting a small savanna stream in Apure State, Venezuela. Stomach contents analyses, supported by laboratory determinations of digestion rate, showed that these fish are primarily diurnal...
Authors
L.G. Nico
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