Bertram, Cicely Kate Ricardo

18 publications

Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1962Manatees of Guiana.
Nature (London) 196(4861): 1329. Dec. 29, 1962.
—Reprinted in Jour. Brit. Guiana Mus. & Zoo No. 37? Summarizes the status of manatees in British Guiana and neighboring regions, and efforts to use them in weed-clearing. Notes difficulty in the latter efforts due to losses in capture and transport, and failure of manatees to breed in captivity.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1963The status of manatees in the Guianas.
Oryx 7(2/3): 90-93. Aug. 1963.
—Reviews the status and distribution of T. m. manatus in British Guiana, its use for meat and for weed control, and the impracticability of expanding the latter use. Makes recommendations for manatee conservation in the Guianas.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1964bDoes the "extinct" sea cow survive?
New Scientist 24(415): 313. 1 fig. Oct. 29, 1964.
—Pop. acc. of the presumed extermination and possible survival of Steller's sea cow.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1964aManatees in the Guianas.
Zoologica (New York) 49(2): 115-120. Summer 1964.
—Describes the distribution, habits, and status of T. m. manatus in British Guiana and adjacent areas.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1965Seaweed into beef.
Animals 6(13): 352-355. 7 figs.
—Gen. acc. of sir. natural history.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1966cDugongs in Australian waters.
Oryx 8(4): 221-222. Apr. 1966.
—Dugongs reported to be doing well in Australia, and little hunted except by Aborigines.
Bertram, Cicely Kate Ricardo; Bertram, George Colin Lawder (detail)
1966bSea cows could be useful.
Sea Frontiers 12(4): 210-217. 5 figs. July-Aug., 1966.
—Pop. acc. of sir. status and use for weed control and other purposes; figs. of dugongs, tusks, harpoons, and seagrass.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1966aThe dugong.
Nature (London) 209(5026): 938-939. Feb. 26, 1966.
—Optimistic report of dugong status in Australia and neighboring regions; hunting pressure believed to be diminishing in many places, and stocks seem secure.
Bertram, Cicely Kate Ricardo; Bertram, George Colin Lawder (detail)
1966dThe Sirenia: a vanishing order of mammals.
Animal Kingdom 69(6): 180-184. 4 figs. Dec. 1966.
—Pop. acc. of sirs. and the prospects for their survival, with one photo of T. manatus, two of dugongs, and a sketch of Steller's sea cow from G. M. Allen (1942).
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1968bBionomics of dugongs and manatees.
Nature (London) 218(5140): 423-426. 3 figs. May 4, 1968 (read to Linnean Soc., Feb. 15, 1968).
—Gen. acc. of sirs. and their conservation, emphasizing Australian dugongs and Guyanese manatees.
Bertram, Cicely Kate Ricardo; Bertram, George Colin Lawder (detail)
1968aThe Sirenia as aquatic meat-producing herbivores. In: M. A. Crawford (ed.), Comparative nutrition of wild animals.
Symp. Zool. Soc. London No. 21: 385-391; discussion, 393-394. 2 figs. Symposium held Nov. 10-11, 1966.
—Discusses sir. ecology, economic uses, and conservation.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1968cThe world's most valuable reptiles.
Animals 10(10): 440-444. Feb. 1968.
—Compares sea turtles with sirs. as marine herbivores.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1970bDugongs in Ceylon.
Oryx 10(6): 362-364. 2 figs. Dec. 1970.
—Reports that dugongs are decreasing in Ceylon due to accidental netting, in spite of legal protection, and advocates creation of a dugong sanctuary.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1970aThe dugongs of Ceylon.
Loris 12(1): 53-55. June 1970.
—Discusses problems of dugong conservation (particularly marked decline due to intensification of the marine fishery), summarizes present status, and urges establishment of a dugong sanctuary.
Bertram, Cicely Kate Ricardo; Bertram, George Colin Lawder (detail)
1971The decline of the dugong.
Austral. Nat. Hist. 17(4): 146-147. 1 fig. Dec. 1971.
—Pop. acc. of Australian dugongs. Mentions use of dugong oil in a Queensland hospital for medicinal purposes as late as 1965.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1973The modern Sirenia: their distribution and status.
Biol. Jour. Linn. Soc. 5(4): 297-338. 2 figs. Pl. 1. Dec. 1973.
—An excellent and detailed review, based on wide travel and correspondence, of the present distribution of sirs., population trends, economic use and past exploitation, present hunting and hunting techniques, accidental catch, use in weed control, and existing and needed conservation measures. Rather more emphasis is placed on dugongs than on manatees. Includes an analysis of data on size, sex, pregnancy, and month of capture of some 433 dugongs taken at Numbulwar Mission, Northern Territory, Australia, in 1963-69 (333-335); limited evidence for a breeding season was found.
Charnock-Wilson, John P.; Bertram, Cicely Kate Ricardo; Bertram, George Colin Lawder (detail)
1974The manatee in Belize.
Belize Audubon Soc. Bull. 6(1): 1-4. Mar. 1974.
—Abstr.: Oryx 13(3): 230, Feb. 1976.
Bertram, George Colin Lawder; Bertram, Cicely Kate Ricardo (detail)
1977The status and husbandry of manatees Trichechus spp.
Internatl. Zoo Yearbk. 17: 106-108.
—Briefly reviews the history and status of manatee weed-control attempts in Guyana and Surinam, and the Guyana manatee research project; urges creation of a captive-breeding program and discusses problems of weed-control and captive-breeding efforts.