Journal Article The Midventral Gland In Malaysian Murid Rodents Get access Robert L. Rudd Robert L. Rudd Department of Zoology, University of California, Davis Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 47, Issue 2, 26 May 1966, Pages 331–332, https://doi.org/10.2307/1378135 Published: 26 May 1966 Article history Accepted: 05 November 1965 Published: 26 May 1966

Journal Article Weight and Growth in Malaysian Rain Forest Mammals Get access Robert L. Rudd Robert L. Rudd Department of Zoology, University of California, Davis Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 46, Issue 4, 30 November 1965, Pages 588–594, https://doi.org/10.2307/1377929 Published: 30 November 1965 Article history Accepted: 31 August 1965 Published: 30 November 1965

Spleen Size in Relation to Reproductive Activity in Pocket Gophers Get access Robert L. Rudd Robert L. Rudd Department of Zoology, University of California, Davis Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 44, Issue 4, 13 December 1963, Pages 578–579, https://doi.org/10.2307/1377147 Published: 13 December 1963 Article history Received: 20 August 1962 Published: 13 December 1963

The responses of the adrenal gland in two populations of the pocket gopher, Thomomys umbrinus, held in captivity were gauged after (1) holding individuals singly in captivity; (2) placing them together in various sex and numerical combinations and (3) surgical removal of the left adrenal gland. Animals held singly in captivity showed only slight increases in adrenal weight, apparently due to nodular increase of the zona fasciculata. Unilaterally adrenalectomized animals (kept singly) showed a marked compensatory hypertrophy of the remaining right adrenal gland due to both cortical and medullary changes. Animals held together in “pairs” normally reacted to each other by violent threats and attacks reflected in frequent wounding and death and in pronounced medullary changes. Populations of 2, 4 and 8 individuals held in outdoor pens with “natural” food and cover showed striking antagonisms at the higher levels, including death to half the test population at level eight, but did not show adrenal gland differences consonant with the extent of wounding, weight loss and death. Cellular changes in the adrenal gland were chiefly medullary. In view of the unusual gland responses observed we suggest that the pocket gopher depends on medulla-mediated antagonisms to maintain territory reinforced by ecological isolation. Apparently little dependence is placed on adrenopituitary interactions. The pocket gopher seemingly has lost, or has never developed, dependence on this axis so important in more social mammals.

Journal Article Nursery Colonies in the Pallid Bat Get access Albert J. Beck, Albert J. Beck Dept. of Zoology, Univ. of California, Davis Search for other works by this author on: Oxford Academic Google Scholar Robert L. Rudd Robert L. Rudd Dept. of Zoology, Univ. of California, Davis Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 41, Issue 2, 20 May 1960, Pages 266–267, https://doi.org/10.2307/1376367 Published: 20 May 1960 Article history Received: 26 January 1959 Published: 20 May 1960

Salt marsh shrews (Sorex vagrans halicoetes) are common inhabitants of some of the San Francisco Bay salt marshes in California. Their numbers in favorable marshes form perhaps 10 per cent of the mammalian fauna present, the rest of which is chiefly composed of Microtus californicus, Rattus norvegicus, Mus musculus, and Reithrodontomys raviventris, all of which are more abundant than shrews. There is no study yet reported on the biology of salt marsh shrews, and indeed little on the species S. vagrans throughout its range. Comparative material in this paper has been drawn mainly from Clothier (1955), Hamilton (1940), (1944), (1949), Jameson (1955), Blossom (1932), and Dehnel (1952); only the first of these deals with Sorex vagrans. Field work was done from 1949 to 1955, although the major part of this time was spent on studies other than this...

Journal Article The Technical Name of the African Muishond (Genus Ictonyx) Get access J. R. Ellerman, J. R. Ellerman British Museum (Natural History), London, S.W. 7 Search for other works by this author on: Oxford Academic Google Scholar T. C. S. Morrison-Scott T. C. S. Morrison-Scott British Museum (Natural History), London, S.W. 7 Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 34, Issue 1, February 1953, Pages 114–116, https://doi.org/10.2307/1375950 Published: 01 February 1953 Article history Received: 28 July 1952 Published: 01 February 1953