Arbogast, D.M.; Metrione, L.C.; Jones, M.K.; Donelan, E.; Roth, T.L.; Freeman, E.W.; Rispoli, L.A. 2026. Pregnancy-and age-associated variation in serum dehydroepiandrosterone concentrations in black and white rhinoceroses. Conservation Physiology 14: 1-12. doi.org/10.1093/conphys/coag007
Arbogast, D.M.; Freeman, E.W.; Donelan, E.; Jones, M.K.; Rispoli, L.A.; Roth, T.L.; Metrione, L.C. 2026. Monthly plasma oxytocin samples detect lactational but not social management or behavioral variation in ex situ black and white rhinoceroses. Theriogenology Wild 8 (100155): 1-8. doi.org/10.1016/j.therwi.2026.100155
Hammond, E.E.; Penfold, L.M.; Metrione, L.C. 2026. Preliminary investigation: Down-regulation of testosterone by an anti-GnRH immunotherapeutic (Improvest®) in a Southern White Rhinoceros (Ceratotherium simum simum) bull. Theriogenology 8 (100156): 1-4. doi.org/10.1016/j.therwi.2026.100156
Mac Leod, K.C.; Jones, M.K.; Metrione, L.C.; Freeman, E.W. 2026. Temperament assessment of black (Diceros bicornis) and white (Ceratotherium simum) rhinos using keeper temperament surveys and novel object tests. PLOS One 21 (9) e0356484: 1-23. doi.org/10.1371/journal.pone.0356484
Metrione, L.C.; Roth, T.L.; Rodriguez, Y.; Freeman, E.W. 2024. Pilot investigation of socio-spatial relationships in an ex situ white rhino (Ceratotherium simum simum) bachelor group. Journal of Zoological and Botanical Gardens 5: 774-787. doi.org/10.3390/jzbg5040051
Gillis, J.D.; Donnelly, K.A.; MacCann, R.S.; Metrione, L.C.; Zachariah, T.T.; O’Brien, J.K.; Stoops, M.A. 2023. An improved understanding of ovulation timing in two rhinoceros species (Rhinoceros unicornis, Ceratotherium simum simum): ultrasound examination of preovulatory follicles before and after ovulation induction. Reproduction, Fertility and Development 36 (2): 161. doi.org/10.1071/RDv36n2Ab23
CREW (Cincinnati Zoo); The Wilds (Cumberland, Ohio); Institute of Museum and Library Services; Pennington, P.; Miller, M.; Ramer, J.; Freeman, E.; Metrione, L.C.; Roth, T.L.; Schook, M.W. 2021. American Institute of Rhinoceros Science (AIRS). Organizational poster.
Stoops, M.; Moresco, A.; Penfold, L.M.; Gillis, J.D.; Wojtusik, J.; Metrione, L.C.; O’Brien, J.K. 2021. Overcoming reproductive disorders in female greater one-horned rhinoceros (Rhinoceros unicornis) to improve artificial insemination and natural breeding success. Clinical Theriogenology 13 (4) Dec: 394-401. doi.org/10.58292/ct.v13.9317
Citino, S.B.; Goe, A.; Metrione, L.C.; Oliva, M.; Garner, M.M. 2017. Sudden death in three southern white rhinoceros (Ceratotherium simum simum) secondary to presumptive Clostridium perfringens enterotoxemia. Proceedings of the American Association of Zoo Veterinarians (AAZV) 2017: 105-106.
Tubbs, C.; Moley, L.A.; Ivy, J.A.; Metrione, L.C.; LaClaire, S.; Felton, R.G.; Milnes, M.R.; Durrant, B.S. 2016. Estrogenicity of captive southern white rhinoceros diets and their association with fertility. General and Comparative Endocrinology 238 (1): 32-38. doi.org/10.1016/j.ygcen.2016.05.004
Metrione, L.C.; Eyres, A. 2014. Rhino husbandry manual. Fort Worth (TX), International Rhino Foundation. pp. 1-327.
Metrione, L.C.; Harder, J.D. 2011. Fecal corticosterone concentrations and reproductive success in captive female southern white rhinoceros. General and Comparative Endocrinology 171 (2011) 283–292 171: 283-292.
Metrione, L.C. 2010. Relationships of social behavior and the captive environment to reproduction in female Southern White rhinoceros (Ceratotherium simum simum). Dissertation presented in partial fufillment of the requirements for the Degree Doctor of Philosophy in the Graduate School of the Ohio University. pp. 1-232.
Metrione, L.C.; Penfold, L.M.; Waring, G.H. 2007. Social and spatial relationships in captive southern white rhinoceros (Ceratotherium simum simum). Zoo Biology 26 (4): 487-502, figs. 1-3, tables 1-2.






