Kay E. Holekamp

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Kay E. Holekamp
Kay Holekamp as a graduate student.jpg
Kay Holekamp in 2011
Alma mater Smith College
University of California, Berkeley
Known for Mara Hyena Project
Awards David and Lucile Packard Foundation Fellow (1993)

Animal Behavior Society Fellow (2001)
American Association for the Advancement of Science Fellowship (2013)
Guggenheim Fellowship (2006) American Society of Mammologists C. Hart Merriam Award (2005)
Smith College Medal (2013)
American Academy of Arts and Sciences Fellow (2015)

Contents

Animal Behavior Society Lifetime Achievement Award (2019)
Scientific career
Fields Behavioral Biology
Institutions Michigan State University
University of California, Santa Cruz
Thesis  (1983)
Doctoral advisor Steven E. Glickman and Roy L. Caldwell
Website www.holekamplab.org

Kay E. Holekamp is a University Distinguished Professor in the Department of Integrative Biology at Michigan State University (MSU). She is also a core member of the interdisciplinary program in Ecology, Evolution, and Behavior (EEB) at MSU, [1] and she served as Director of that program from 2009 to 2020.

Education

Holekamp received her undergraduate degree in 1973 in Biological Psychology from Smith College, where she wrote her honors thesis on the behavior of Linnaeus's mouse opossum (Marmosa Murina). [2] After a stint working as a river guide in Amazonas and hitchhiking around the world, [3] Holekamp earned her PhD in Psychobiology in 1983 at the University of California, Berkeley.

Holekamp's doctoral dissertation research, conducted under the supervision of Stephen E. Glickman and Roy L. Caldwell, focused on the sexually dimorphic natal dispersal behavior of Belding's ground squirrel (Urocitellus beldingi, formerly Spermophilus beldingi). In her postdoctoral work in behavioral endocrinology with Frank Talamantes at the University of California, Santa Cruz, Holekamp studied the reproductive endocrinology of California ground squirrels (Otospermophilus beecheyi, formerly Spermophilus beecheyi) [4] [5]

Early life

Holekamp is the eldest of four children born to Carl H. Holekamp Jr. and Barbara Brown Holekamp. Holekamp was raised in St. Louis, Missouri, where she attended the John Burroughs School from 1963 to 1969. During her senior year of high school, she initiated her career in animal behavior by working part-time as a keeper in the Children's Zoo and Small Mammal Division at the St. Louis Zoo.

After graduating from Smith College, Holekamp worked as an Amazon river guide at the Parador Ticuna Hotel (now the Hotel Utuane) in Leticia, Colombia, until starting her doctoral work at U.C. Berkeley.

Scientific career

In 1987, Holekamp joined the Department of Ornithology and Mammalogy as a research associate at San Francisco's California Academy of Sciences. There, in May, 1988, she initiated her long-term field study of the behavioral ecology of spotted hyenas (Crocuta Crocuta) in the Maasai Mara National Reserve, Kenya. Holekamp joined the faculty of the Department of Zoology (now the Department of Integrative Biology) at Michigan State University in 1992. There, Holekamp and her students continued her field study of spotted hyenas with a particular focus on their behavioral and morphological development.

She received multiple awards for outstanding teaching and mentoring during her tenure at MSU, where she was named a University Distinguished Professor in 1999. She has received uninterrupted support for her hyena research from the U.S. National Science Foundation from 1987 through 2025.

Awards

Holekamp was awarded a fellowship from the David and Lucile Packard Foundation in 1993. [6] She was elected as a Fellow of the Animal Behavior Society in 2001, [7] and received the C. Hart Merriam Award for outstanding research in mammalogy from the American Society of Mammalogists in 2005. In 2006, she received a Guggenheim Fellowship. In 2013, Holekamp was elected as a Fellow of the American Association for the Advancement of Science, [8] and she was also awarded the Smith College Medal. [9] She was inducted as a Fellow of the American Academy of Arts and Sciences in 2015. In 2016, she was elected by the American Society of Mammalogists to Honorary Membership, which is the Society's highest honor. [10] Holekamp was also the recipient of the Distinguished Animal Behaviorist Award from the Animal Behavior Society, a lifetime achievement award and that Society's highest honor, in 2019. [11]

Research

Ground squirrels

Holekamp studied the proximal factors influencing dispersal from the natal site [12] by Belding's ground squirrels in the Sierra Nevada of California. Holekamp's data supported an "ontogenetic switch" hypothesis, suggesting that natal dispersal behavior by male squirrels is triggered by attainment of a particular body mass or body composition, or some combination of these variables. Holekamp also tested hypotheses about the endocrine mediation of natal dispersal, finding that the behavior was mediated by organizational effects of androgenic hormones. [13]

Later, Holekamp's first PhD student, Scott Nunes, found that perinatal exposure to testosterone determines the probability of dispersal, whereas the amount of energy a ground squirrel has stored as fat strongly influences the timing of its dispersal. [14] Together with P. W. Sherman, Holekamp summarized her work on natal dispersal in a 1989 paper published in American Scientist that addressed the question of why male ground squirrels disperse [15] at all four levels of analysis suggested by Niko Tinbergen.

Spotted hyenas

Kay Holekamp in the Masai Mara National Reserve. Kay Holekamp in the Masai Mara National Reserve.gif
Kay Holekamp in the Masai Mara National Reserve.

From 1988 until 2025, Holekamp served as Director of the Mara Hyena Project, a long-term field study of free-living spotted hyenas in southwestern Kenya. Her early hyena work, conducted in collaboration with Laura Smale, addressed the question of how females come to dominate males during the course of their early social development. Holekamp and Smale found that young hyenas of both sexes assume social ranks immediately below those of their mothers, and that females only come to dominate males when males disperse from their natal social group. [16] [17] Holekamp and her students went on to study social rank and reproductive success, [18] hunting success, [19] behavioral and hormonal changes associated with natal dispersal behavior, [20] [21] and mating strategies [22] [23] in spotted hyenas.

Together with S.M. Dloniak and J. A. French, Holekamp found that both male and female cubs born to mothers with high concentrations of androgens during late pregnancy exhibit higher rates of aggression than cubs born to mothers with lower androgen concentrations. [24] Because spotted hyenas live in social groups of the same size and structure as troops of many old-world primates, [25] Holekamp and her students used spotted hyenas as a model system for testing hypotheses about the evolution of large brains [26] [27] and enhanced intelligence. [28] [29] [30] Holekamp and her students have also made contributions elucidating the immune function of spotted hyenas, their microbiome, [31] their conservation and management, [32] [33] their cooperative defense of resources, [34] [35] and their social dynamics. [36] [37]

References

  1. ↑ "EEB Core Faculty". EEB Program at MSU.
  2. ↑ Holekamp, K. E.; Reutener, D.B. (1981). "Observation, description, and analysis of the captive behavior of Marmosa murina". JSAS Catalog of Selected Documents in Psychology. 423: 69.
  3. ↑ Holekamp, K. E. (1979). "Suggestions for women travelers". In Berg, R. (ed.). The Art & Adventure of Traveling Cheaply. Berkeley, CA: And/Or Press. pp. 175–188.
  4. ↑ Holekamp, K. E.; Nunes, S.; Talamantes, F. (1988). "Circulating prolactin in free-living California ground squirrels (Spermophilus beecheyi)". General and Comparative Endocrinology. 71 (3): 484–492. doi:10.1016/0016-6480(88)90278-X. PMID   3192071.
  5. ↑ Holekamp, K. E.; Talamantes, F. (1992). "Seasonal fluctuations in hormones and behavior of free-living male California ground squirrels (Spermophilus beecheyi)". Hormones and Behavior. 26 (1): 7–23. doi:10.1016/0018-506X(92)90028-T. PMID   1563730.
  6. ↑ "Kay Holekamp".
  7. ↑ "ABS Fellows".
  8. ↑ "AAAS Fellows Listing".
  9. ↑ "Smith College Awards and Medals".
  10. ↑ "Honorary Membership".
  11. ↑ "Distinguished Animal Behaviorist Award".
  12. ↑ Holekamp, K. E. (1986). "Proximal causes of natal dispersal in Belding's ground squirrels (Spermophilus beldingi)". Ecological Monographs. 56 (4): 365–391. Bibcode:1986EcoM...56..365H. doi:10.2307/1942552. JSTOR   1942552.
  13. ↑ Holekamp, K. E.; Smale, L.; Simpson, H. B.; Holekamp, N. A. (1984). "Hormonal influences on natal dispersal in free-living Belding's ground squirrels (Spermophilus beldingi)". Hormones and Behavior. 18 (4): 465–483. doi:10.1016/0018-506X(84)90031-X. PMID   6519659.
  14. ↑ Nunes, S.; Duniec, T. R.; Schweppe, S. A.; Holekamp, K. E. (1999). "Energetic and endocrine mediation of natal dispersal behavior in Belding's ground squirrels". Hormones and Behavior. 35 (2): 113–124. doi:10.1006/hbeh.1998.1504. PMID   10202119.
  15. ↑ Holekamp, K. E.; Sherman, P. W. (1989). "Why male ground squirrels disperse". American Scientist. 77 (3): 232–239. Bibcode:1989AmSci..77..232H.
  16. ↑ Holekamp, K. E.; Smale, L. (1993). "Ontogeny of dominance in free-living spotted hyaenas: Juvenile rank relations with other immature individuals". Animal Behaviour. 46 (3): 451–466. doi:10.1006/anbe.1993.1214.
  17. ↑ Smale, L.; Frank, L. G.; Holekamp, K. E. (1993). "Ontogeny of dominance in free-living spotted hyaenas: Juvenile rank relations with adults". Animal Behaviour. 46: 467–477. doi:10.1006/anbe.1993.1215.
  18. ↑ Holekamp, K. E.; Smale, L.; Szykman, M. (1996). "Rank and reproduction in the female spotted hyaena". Journal of Reproduction and Fertility. 108 (2): 229–237. doi:10.1530/jrf.0.1080229. PMID   9038781.
  19. ↑ Holekamp, K. E.; Smale, L.; Berg, R.; Cooper, S. M. (1997). "Hunting rates and hunting success in the spotted hyaena". Journal of Zoology, London. 242: 1–15. doi:10.1111/j.1469-7998.1997.tb02925.x.
  20. ↑ Holekamp, K. E.; Smale, L. (1998). "Dispersal status influences hormones and behavior in the male spotted hyena". Hormones and Behavior. 33 (3): 205–216. doi:10.1006/hbeh.1998.1450. PMID   9698503.
  21. ↑ Holekamp, K. E.; Sisk, C. L. (2003). "Effects of dispersal status on gonadal and pituitary function in the male spotted hyena". Hormones and Behavior. 44 (5): 385–394. doi:10.1016/j.yhbeh.2003.06.003. PMID   14644632.
  22. ↑ Szykman, M.; Engh, A. L.; Van Horn, R. C.; Funk, S.; Scribner, K. T.; Holekamp, K. E. (2001). "Association patterns between male and female spotted hyenas reflect male mate choice". Behavioral Ecology and Sociobiology. 50: 231–238. doi:10.1007/s002650100356.
  23. ↑ Curren, L. J.; Sawdy, M. A.; Scribner, K. T.; Lehman, K. D. S.; Holekamp, K. E. (2022). "Endurance rivalry among male spotted hyenas: what does it mean to "endure"?". Behavioral Ecology. 76 (8): 112. Bibcode:2022BEcoS..76..112C. doi:10.1007/s00265-022-03212-7.
  24. ↑ Dloniak, S. M.; French, J. A.; Holekamp, K. E. (2006). "Rank-related maternal effects of androgens on behaviour in wild spotted hyaenas". Nature. 440 (7088): 1190–1193. Bibcode:2006Natur.440.1190D. doi:10.1038/nature04540. PMID   16641996.
  25. ↑ Holekamp, K. E.; Sakai, S. T.; Lundrigan, B. L. (2007). "The spotted hyena as a model system for study of the evolution of intelligence". Journal of Mammalogy. 88: 545–554. doi:10.1644/06-MAMM-S-361R1.1.
  26. ↑ Swanson, E. M.; Holekamp, K. E.; Lundrigan, B. L.; Arsznov, B.; Sakai, S. T. (2012). "Multiple determinants of brain size and brain architecture in mammalian carnivores". PLOS ONE. 7 (6): e38447. doi: 10.1371/journal.pone.0038447 . PMC   3374790 . PMID   22719890.
  27. ↑ Benson-Amram, S. R.; Dantzer, B.; Stricker, G.; Swanson, E. M.; Holekamp, K. E. (2016). "Brain size predicts problem-solving ability in mammalian carnivores". Proceedings of the National Academy of Sciences of the United States of America. 113 (9): 2532–2537. Bibcode:2016PNAS..113.2532B. doi: 10.1073/pnas.1505913113 . PMC   4780594 . PMID   26811470.
  28. ↑ Benson-Amram, S. R.; Holekamp, K. E. (2012). "Innovative problem solving by wild spotted hyenas". Proceedings of the Royal Society B: Biological Sciences. 279 (1744): 4087–4095. doi:10.1098/rspb.2012.1450. PMC   3427591 . PMID   22874748.
  29. ↑ Holekamp, K. E.; Dantzer, B.; Stricker, G.; Yoshida, K. C. S.; Benson-Amram, S. R. (2015). "Brains, brawn and sociality: a hyaena's tale". Animal Behaviour. 103: 237–248. doi:10.1016/j.anbehav.2015.01.023. PMC   4493912 . PMID   26160980.
  30. ↑ Johnson-Ulrich, L.; Holekamp, K. E. (2019). "Group size and social rank predict inhibitory control in spotted hyaenas". Animal Behaviour. 160: 157–168. doi: 10.1016/j.anbehav.2019.11.020 .
  31. ↑ Flies, A. S.; Mansfield, L. S.; Johnston-Flies, E. S.; Grant, C. K.; Holekamp, K. E. (2016). "Social rank predicts immune defenses in a long-lived wild carnivore". Functional Ecology. 30 (9): 1549–1557. doi:10.1111/1365-2435.12638.
  32. ↑ Kolowski, J. M.; Holekamp, K. E. (2006). "Spatial and temporal variation in livestock depredation by large carnivores along a Kenyan reserve border". Biological Conservation. 128: 529–541. doi:10.1016/j.biocon.2005.10.021.
  33. ↑ Pangle, W. M.; Holekamp, K. E. (2010). "Lethal and non-lethal anthropogenic effects on spotted hyenas in the Masai Mara National Reserve". Journal of Mammalogy. 91: 154–164. doi:10.1644/08-MAMM-A-359R.1. {{cite journal}}: CS1 maint: ignored DOI errors (link)
  34. ↑ Boydston, E. E.; Morelli, T. L.; Holekamp, K. E. (2001). "Sex differences in territorial behavior exhibited by the spotted hyena (Crocuta crocuta)". Ethology. 107: 369–385. doi:10.1046/j.1439-0310.2001.00672.x.
  35. ↑ Montgomery, T. M.; Lehmann, K. D. S.; Gregg, S.; Keyser, K.; McTigue, L. E.; Beehner, J. C.; Holekamp, K. E. (2023). "Determinants of hyena participation in risky collective action". Proceedings of the Royal Society B: Biological Sciences. 290 (2011): 20231390. doi:10.1098/rspb.2023.1390. PMC   10685128 . PMID   38018101.
  36. ↑ Smith, J. E.; Kolowski, J. M.; Graham, K. E.; Dawes, S. E.; Holekamp, K. E. (2008). "Social and ecological determinants of fission-fusion dynamics in the spotted hyaena". Animal Behaviour. 76 (3): 619–636. doi:10.1016/j.anbehav.2008.05.001.
  37. ↑ Strauss, E. D.; Holekamp, K. E. (2019). "Social alliances improve rank and fitness in convention-based societies". Proceedings of the National Academy of Sciences of the United States of America. 116 (18): 8919–8924. Bibcode:2019PNAS..116.8919S. doi: 10.1073/pnas.1810384116 . PMC   6500164 . PMID   30858321.

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