https://doi.org/10.4081/tz.2024.157
Abundance, distribution and diet analysis of East African common mole rat (Tachyoryctes splendens) in farming fields of Dawachefa District, Northeast Ethiopia
Submitted: 30 November 2023
Accepted: 1 July 2024
Published: 24 July 2024
Accepted: 1 July 2024
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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Authors
The East African common mole rat, scientifically known as Tachyoryctes splendens, is a solitary rodent mole that inhabits subterranean environments. This research focused on assessing the abundance, distribution, population structure, and dietary preferences of the East African common mole rat in three specific locations within the Dawachefa locality, Ethiopia, during both the wet and dry seasons. The research was conducted between June 2022 and February 2023. The abundance and distribution of the common mole rat were estimated through fresh mound counts, while live and locally crafted snap conical traps were utilized for capturing them. Stomach content analysis was performed to identify food fragments. Excavations were conducted to examine the burrow system, revealing three elements: a single multi-functional nest, one or more foraging tunnels, and a bolthole. A total of 45 common mole rats (30 males and 15 females) were captured across the three study sites during both seasons. Adults constituted 62.2% of the captured individuals, sub-adults accounted for 24.44%, and juveniles made up 13.33%. The male-to-female ratio was 2:1, with a significant difference in proportions (t=7.746, p=0.001). Although the abundance of common mole rats did not vary significantly among the selected sites, it showed a significant difference between the wet and dry seasons. The analysis of stomach contents revealed a total of 661 isolated food fragments. Grass comprised the largest portion at 34%, followed by sugarcane (31.2%), banana (24.5%), and papaya (10.3%). Understanding the abundance, distribution, population structure, and food preferences of T. splendens in the study area is crucial for developing strategies to address the agricultural yield loss caused by this species.
References
Baskevich MJ, Orlov VN, Afework B, Assefa M. 1993. Notes on the karyotype of Tachyoryctes splendens (Ruppell, 1836) (Rodentia: Rhizomyidae) from Ethiopia. Tropical Zoology. 6:81–88.
DOI: https://doi.org/10.1080/03946975.1993.10539210
Bekele A. 1986. The status of some mole rats of the genus Tachyoryctes (Rodentia: Rhizomidae) based on craniometric studies. African Journal of Zoology. 99:411–417.
Bekele A. Leirs H. 2003. Rodent crop damage in maize fields in Zeway, central Ethiopia. In: Singleton GR, Hinds LA, Krebs CJ, Sprott DM, editors. Rats, Mice and People: Rodent Biology and Management. Canberra: Australian Center for International Agricultural Research. p. 262–263.
Bennett NC, Faulkes CG. 2000. African mole-rats, ecology and eusociality. Cambridge and New York: Cambridge University Press. xiv + 273 pp.
Bennett NC, Jarvis JUM. 1995. Coefficients of digestibility and nutritional values of geophytes and tubers eaten by Southern African mole rats. (Rodentia: Bathyergidae). Journal of Zoology, London. 236:189–198.
DOI: https://doi.org/10.1111/j.1469-7998.1995.tb04487.x
Bennett NC, Jarvis JUM, Wallace DB. 1990. The relative age structure and body masses of complete wild-captured colonies of two social mole-rats, the common-rat, Cryptomys hottentotus and the Damaraland mole-rat, Cryptomys damarensis. Journal of Zoology, London. 220:469–485.
DOI: https://doi.org/10.1111/j.1469-7998.1990.tb04319.x
Biruk G, Wodajo G, Kedir B. 2018. Identification of major crop production constraints in Debub Ari District, South Omo Zone, Southern Ethiopia. International Journal of Research in Agriculture and Forestry. 5:8–15.
Brett RA. 1991. The ecology of naked mole-rat colonies: burrowing, food, and limiting factors. In: Sherman PW, Jarvis JUM, Alexander RD, editors. The biology of the naked mole-rat. Princeton: Princeton University Press. p. 23–30.
Busch C, Antinuchi CD, Valle JC, Kittlein MJ, Malizia AI, Vassallo AI, Zenuto R. 2000. Population ecology of subterranean rodents. In: Lacey EA, Patton JL, Cameron GN, editors. Life Underground, the Biology of Subterranean Rodents. Chicago: The University of Chicago Press. p. 183–226.
Carter TS, Rosas FCM. 1997. Biology and Conservation of the giant otter, Pteronara brasiliensis. Mammal Review. 27:1–26.
DOI: https://doi.org/10.1111/j.1365-2907.1997.tb00370.x
Demeke D, Afework B, Gurja B. 2007. Feeding ecology of pest rodents from Arbaminch forest and farmlands, Ethiopia. SINET: Ethiopian Journal of Science. 30:127–134.
DOI: https://doi.org/10.4314/sinet.v30i2.18287
Faith JT, Patterson DB, Blegen N, Oneill CJ, Marean CW, Peppe DJ, Tryon CA. 2016. Size variation in Tachyoryctes splendens (East African mole-rat) and its implications for late Quaternary temperature change in equatorial East Africa. Quaternary Science Reviews. 140:39–48.
DOI: https://doi.org/10.1016/j.quascirev.2016.03.017
Faulkes C, Bennett N. 2007. African mole-rats: social and ecological diversity. In: Wolff JO, Sherman PW, editors. Rodent Societies: An ecological and evolutionary perspective. Chicago: The University of Chicago Press. p. 427–437.
Happold DCD, Happold M. 1989. Biogeography of montane small mammals in Malawi, Central Africa. African Journal of Biogeography. 9:201–212.
DOI: https://doi.org/10.2307/2845227
Herbst M, Bennett N. 2006. Burrow architecture and burrowing dynamics of the endangered Namaqua dune mole rat (Bathyergus janetta) (Rodentia: Bathyergidae). Journal of Zoology. 270:420–42.
DOI: https://doi.org/10.1111/j.1469-7998.2006.00151.x
Jarvis JUM. 1973. The population structure of the mole rat, Tachyoryctes splendens (Rodentia: Rhizomyidae). Journal of Zoology, London. 171:1–14.
DOI: https://doi.org/10.1111/j.1469-7998.1973.tb07512.x
Jarvis JUM. 2013. Mammals of Africa. London: Bloomsbury Publishing. p. 23–30.
Jarvis JUM, Sale JB. 1971. Burrowing and burrow patterns of the East African mole-rats, Tachyoryctes, Heliophobius and Heterocephalus. Journal of Zoology, London. 163:451–479.
DOI: https://doi.org/10.1111/j.1469-7998.1971.tb04544.x
Katandukila JV, Bennett NC, Chimimba CT, Faulkes CG, Oosthuizen MK. 2013. Locomotor activity patterns of captive East African root rats, Tachyoryctes splendens (Rodentia: Spalacidae), from Tanzania, East Africa. Journal of Mammalogy. 94:1393–1400.
DOI: https://doi.org/10.1644/13-MAMM-A-095.1
Kingdon J. 1974. East African Mammals: An atlas of evolution in Africa II (b) Rodents and Hares. London: Academic Press. p.159–214.
Kingdon J. 1997. Field Guide to African Mammals. London: Harcourt brace and company publisher. p.159–224.
Kokiso, A. 2006. Common mole_rat, Tachyoryctes splendens (Ruppell, 1836) distribution and its impacts in agricultural fields in Angecha, centeral Ethiopia. M. Sc. Thesis. Addis Ababa University. p. 1–74.
Kokiso A, Bekele A. 2008. Ecology of common mole-rat, Tachyoryctes splendens and its impacts on farmlands at Angecha, Central Ethiopia. Acta Zoologica Sinica. 54:30–35.
Makundi RH, Ngowo V, Massawe AW, Mshuza E. 2010. Community-based rodent pest management in Kilimanjaro Region, Tanzania. Consultation Report. p.1–91.
Makundi RH, Massawe AW. 2011. Ecologically based rodent management in Africa: potential and challenges. Wildlife Research. 38:588–595.
DOI: https://doi.org/10.1071/WR10147
Mengistu S, Bekele A. 2003. Geographic variation in Ethiopian common mole rat, Tachyoryctes splendens based on morphology. Ethiopian Journal of Biological Sciences. 2:73–89.
Mulatu T. 2015. Distribution, abundance, diet composition and pest status of common mole rats (Tachyoryctes splendens) in some selected kebeles of Gimbo Woreda Kaffa Zone, Southwest Ethiopia. M.sc. thesis. Jimma University. 58 pp.
Mulungu LS, Mrosso FP, Katakweba AAS, Mdangi ME, Tesha PPH, Ngowo V, Mchomvu M, Kilonzo BS. 2015. Farmer’s knowledge, attitude and practice on rodent management in lowland irrigated rice in Central-eastern Tanzania. International Research Journal of Plant Science 6:7–14.
Musser G, Carleton M. 2005. "Superfamily Muroidea". In: Wilson DE, Reeder DM, editors. Mammal Species of the World. Baltimore: Johns Hopkins University Press. p. 894–1531.
Nevo E. 1999. Mosaic evolution of subterranean mammals. Regression, progression and global convergence. Oxford and New York: Oxford University Press. xxvi + 413 pp.
DOI: https://doi.org/10.1093/oso/9780198575726.001.0001
Nowak RM. 1999. Walkers Mammals of the World Vol. II 6th ed. Baltimore and London: John Hopkin University Press. p.1166-1170.
Scharff A, Begall S, Grütjen O, Burda H. 1999. Reproductive characteristics and growth of Zambian giant mole-rats, Cryptomys mechowi (Rodentia: Bathyergidae). Mammalia. 63:217–230.
DOI: https://doi.org/10.1515/mamm.1999.63.2.217
Schlitter D, Agwanda B, Corti M. 2013. Tachyoryctes splendens. In: IUCN 2013 Red List of Threatened Species. Version 2013.1. Retrieved from https://www.iucnredlist.org.
Sillero-Zubiri C, Tattersall FH, Macdonald DW. 1995. Habitat selection and daily activity of giant molerats Tachyoryctes macrocephalus: Significance to the Ethiopian wolf Canis simensis in the Afroalpine ecosystem. Biological Conservation. 72:77–84.
DOI: https://doi.org/10.1016/0006-3207(94)00067-Z
Skliba J, Sumbera R, Chitaukali WN, Burda H. 2007. Determinants of daily activity patterns in a free- living Afro-tropical subterranean rodent. Journal of Mammalogy. 88:1009–1016.
DOI: https://doi.org/10.1644/06-MAMM-A-235R1.1
Spinks A, Bennett N, Jarvis M. 2000. A comparison of ecology of two populations of common mole rat, Cryptomys hottentotus: the effect of aridity on food, foraging and body mass. Oecologia. 125:341–349.
DOI: https://doi.org/10.1007/s004420000460
Sumbera R, Krasova J, Lavrenchenko L, Mengistu S, Bekele A, Mikula O, Bryja J. 2018. Ethiopian highlands as a cradle of the African fossorial root-rats (genus Tachyoryctes), the genetic evidence. Molecular Phylogenetics and Evolution. 126:105–115.
DOI: https://doi.org/10.1016/j.ympev.2018.04.003
Terefe Y, Samuel F. 2015. Seasonal species composition and abundance of rodents in Yerer Mountain Forest Area, Central Ethiopia. American Journal of Botany. 3:87–92.
DOI: https://doi.org/10.11648/j.ajbio.20150303.14
Thomas HG, Bateman PW, Le Comber SC, Bennett NC, Elwood RW, Scantlebury M. 2009. Burrow architecture and digging activity in the Cape dune mole rat. Journal of Zoology, London. 279:277–284.
DOI: https://doi.org/10.1111/j.1469-7998.2009.00616.x
Workneh G, Afework B, Gurja B, Balakrishnan M. 2004. Microhabitat choice and diet of rodents in Maynugus irrigation field, Northern Ethiopia. African Journal of Ecology. 42:315–321.
DOI: https://doi.org/10.1111/j.1365-2028.2004.00530.x
Yaba M, Mekonnen Gutema T, Bekele A, Malcom J. 2011. Food selection and feeding behavior of giant mole rat (Tachyoryctes macrocephalus, Ruppell, 1842) from the Sanetti Plateau of Bale Mountains National Park, Ethiopia. Asian-Australasian Journal of Animal Sciences. 4:735–740.
DOI: https://doi.org/10.3923/ajaps.2011.735.740
Yalden DW, Largen MJ, Kok D. 1976. Catalogue of the Mammals of Ethiopia II Insectivora and Rodentia. Monitore zoologico italiano. 8:1–118.
DOI: https://doi.org/10.1080/03749444.1976.10736830
Yidnekachew A. 2017. Feeding ecology and pest status of the mole rats (Tachyoryctes splendens) in Farmland, Masha, and Southwest Ethopia. M.Sc. Thesis. Addis Ababa University. p. 21–35.
Ziyine M, Kifle D. 2012. Karyotype analysis of the common mole rat (Tachyoryctes splendens) from different localities in Ethiopia. Ethiopian Journal of biological Science. 11:13–27.
How to Cite
Degefe, G., Seid, A., & Ayele, C. (2024). Abundance, distribution and diet analysis of East African common mole rat (Tachyoryctes splendens) in farming fields of Dawachefa District, Northeast Ethiopia. Tropical Zoology, 37(3-4). https://doi.org/10.4081/tz.2024.157
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