Eur. J. Entomol. 105 (1): 105-112, 2008 | 10.14411/eje.2008.015

Habitat use and movement patterns in the endangered ground beetle species, Carabus olympiae (Coleoptera: Carabidae)

Matteo NEGRO1, Achille CASALE2, Luca MIGLIORE1, Claudia PALESTRINI1, Antonio ROLANDO1
1 Dipartimento di Biologia Animale e dell'Uomo, UniversitL degli studi di Torino, via Accademia Albertina 13, 10123 Torino, Italy; e-mail: matteo.negro@unito.it
2 Dipartimento di Zoologia e Genetica Evoluzionistica, UniversitL degli studi di Sassari, via Muroni 25, 07100 Sassari, Italy

One of the most compelling challenges for conservation biologists is the preservation of species with restricted ranges. Carabus olympiae Sella, 1855, a ground beetle species inhabiting two small areas in the western Italian Alps, is an example of a steno-endemic and endangered insect species. Despite the fact that this species is historically well known to professional and amateur entomologists, its autecology is virtually unknown. In the present study we used pitfall traps to study habitat selection and phenology, and radiotelemetry to measure differences in movement parameters between sexes, habitats and periods. Data from pitfall trapping suggested that C. olympiae actively selects both shrubberies (alpen rose Rhododendron ferrugineum and bilberry Vaccinium myrtillus) and beech forests and avoids pastures, and that population size peaks in July. All radio-tagged individuals (n = 21) moved without a preferred direction, and were more active at night than by day. Males covered greater distances and had more tortuous trajectories than females. Distances covered in forests and alpen rose shrubberies were not significantly different, but paths in beech forests were more convoluted than in shrubberies. The movement pattern observed fits the requirements of a typical "olfactory-tactile" insect predator that looks for prey by systematically exploring its territory. Movement parameters suggested that both beech forests and alpen rose shrubberies are suitable for this species and indicated that the spatial distribution of shrubs in shrubberies can constrain trajectories. The implications for conservation are: (i) any human intervention which results in enlargement of the present coverage of pastures should be controlled; (ii) forest management may be tolerated, with the condition that alpen rose shrubberies remain or develop after tree-cutting; (iii) once a shrubbery has established, it should be preserved through appropriate management.

Keywords: Conservation biology, endemic species, habitat use, pitfall trapping, radio-tracking

Received: May 22, 2007; Accepted: September 3, 2007; Published: February 15, 2008

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References

  1. ARITA H.A., FIGUEROA F., FRISCH A., RODRIGUEZ P. & SANTOSDEL-PRADO K. 1997: Geographical range size and the conservation of Mexican mammals. Conserv. Biol. 11: 92-100 Go to original source...
  2. ASSMANN T. & JANSSEN J. 1999: The effects of habitat changes on the endangered ground beetle Carabus nitens (Coleoptera: Carabidae). J. Insect Conserv. 3: 107-116 Go to original source...
  3. BAARS M.A. 1979: Patterns of movement of radioactive carabid beetles. Oecologia 44: 125-140 Go to original source...
  4. BATSCHELET E. 1981: Circular Statistics in Biology. Academic Press, London, 371 pp
  5. BEAUDOIN-OLLIVIER L., BONACCORSO F., ALOYSIUS M. & KASIKI M. 2003: Flight movement of Scapanes australis australis (Boisduval) (Coleoptera: Scarabaeidae: Dynastinae) in Papua New Guinea: a radiotelemetry study. Aust. J. Entomol. 42: 367-372 Go to original source...
  6. BRANDMAYR P., ZETTO T., PIZZOLOTTO R., CASALE A. & VIGNA TAGLIANTI A. 2005: I Coleotteri Carabidi per la valutazione ambientale e la conservazione della biodiversitL. Manuale operativo, 34, APAT, Roma, 240 pp
  7. CAIN M.L. 1989: The analysis of angular data in ecological field studies. Ecology 70: 1540-1543 Go to original source...
  8. CASALE A., STURANI M. & VIGNA TAGLIANTI A. 1982: Coleoptera Carabidae I. Fauna d'Italia XVIII. Ed. Calderini, Bologna, 499 pp
  9. CASALE A. & VIGNA TAGLIANTI A. 1993: I Coleotteri Carabidi delle Alpi occidentali e centro-occidentali (Coleoptera, Carabidae). Biogeographia (N.S.) 16: 331-399
  10. CASALE A. & VIGNA TAGLIANTI A. 2005: Coleotteri Caraboidei delle Alpi e Prealpi centrali e orientali, e loro significato biogeografico (Coleoptera, Caraboidea). Biogeographia (N.S.) 26: 129-201
  11. CLAUSSEN D.L., FINKLER M.S. & SMITH M.M. 1997: Thread trailing of turtles: methods for evaluating spatial movements and pathway structure. Can. J. Zool. 75: 2120-2128 Go to original source...
  12. COLLINS N.M. & THOMAS J.A. (eds) 1991: The Conservation of Insects and Their Habitats. Academic Press, London, 450 pp
  13. FORTIN M.-J. & DALE M. 2005: Spatial Analysis, a Guide for Ecologists. Cambridge University Press, Cambridge, 365 pp
  14. GERLACH J. & CANNING L. 2001: Range contractions in the critically endangered Seychelles terrapins (Pelusios spp.). Oryx 35: 313-321 Go to original source...
  15. GULLAN P.J. & CRANSTON P.S. 1994: The Insects: An Outline of Entomology. Chapman & Hall, London, 491 pp
  16. HANCE T. 1990: Relationship between crop types, ground beetle phenology and aphid predation in agroecosystems, In Stork N.E. (ed.): The Role of Ground Beetles in Ecological and Environmental Studies. Intercept, Andover, pp. 55-64
  17. HEDIN J. & RANIUS T. 2002: Using radio telemetry to study dispersal of the beetle Osmoderma eremita, an inhabitant of tree hollows. Comput. Electron. Agr. 35: 171-180 Go to original source...
  18. KHOBRAKOVA L.T. & SHAROVA I.K. 2005: Life cycles of ground beetles (Coleoptera, Carabidae) from the mountain taiga and mountain forest-steppe in the eastern Sayan. Biol. Bull. 32: 571-575 Go to original source...
  19. LORCH P.D., SWORD G.A., GWYNNE D.T. & ANDERSON G.L. 2005: Radiotelemetry reveals differences in individual movement patterns between outbreak and non-outbreak Mormon cricket populations. Ecol. Entomol. 30: 548-555 Go to original source...
  20. LOVEI G., STRINGER I.A.N., DEVINE C.D. & CARTELLIERI M. 1997: Harmonic radar - A method using inexpensive tags to study invertebrate movement on land. N. Z. J. Ecol. 21: 187-193
  21. MAGAGULA C.N. 2003: Changes in carabid beetle diversity within a fragmented agricultural landscape. Afr. J. Ecol. 41: 23-30 Go to original source...
  22. MAGURA T., KODOBOCZ V. & TOTHMERESZ B. 2001: Effects of habitat fragmentation on carabids in forest patches. J. Biogeogr. 28: 129-138 Go to original source...
  23. MALAUSA J.-C., RAVIGLIONE M. & BOGGIO F. 1983: Il Carabus olympiae Sella dell'Alta Valle Sessera. Pro Natura Biellese, Biella, 113 pp
  24. MOSSAKOWSKI D. 1979: Evolution of habitat preference illustrated by the phylogeny of Chrysocarabus (Coleoptera, Carabidae). In Den Boer P.J., Thiele H.U. & Weber F. (eds): On the Evolution of Behaviour in Carabid Beetles. Veenman & Zonen, Wageningen, pp. 103-111
  25. NEGRO M., CASALE A., MIGLIORE L., PALESTRINI C. & ROLANDO A. 2007: The effect of small-scale anthropogenic habitat heterogeneity on assemblages of macro-carabids (Coleoptera, Caraboidea) endemic to the Alps. Biodivers. Conserv. 16: 3919-3932 Go to original source...
  26. NIEMELA J., HAILA Y., HALME E., PAJUNEN T. & PUNTTILA P. 1992: Small-scale heterogeneity in the spatial distribution of carabid beetles in the southern Finnish taiga. J. Biogeogr. 19: 173-181 Go to original source...
  27. NIEMELA J., KOTZE D.J., VENN S., PENEV L., STOYANOV I., SPENCE J., HARTLEY D. & DE OCA E.M. 2002: Carabid beetle assemblages (Coleoptera, Carabidae) across urban-rural gradients: an international comparison. Landscape Ecol. 17: 387-401 Go to original source...
  28. OBERG S. & EKBOM B. 2006: Recolonisation and distribution of spiders and carabids in cereal fields after spring sowing. Ann. Appl. Biol. 149: 203-211 Go to original source...
  29. O'NEAL M.E., LANDIS D.A., ROTHWELL E., KEMPEL L. & REINHARD D. 2004: Tracking insects with harmonic radar: a case study. Am. Entomol. 50: 212-218 Go to original source...
  30. PIPER R.W. & COMPTON S.G. 2002: A novel technique for relocating concealed insects. Ecol. Entomol. 27: 251-253 Go to original source...
  31. RIECKEN U. & RATHS U. 1996: Use of radio telemetry for studying dispersal and habitat use of Carabus coriaceus L. Ann. Zool. Fenn. 33: 109-116
  32. SAMWAYS M.J. 2005: Insect Diversity Conservation. Cambridge University Press, Cambridge, 342 pp
  33. SOKAL R.R. & ROHLF F.J. 1995: Biometry: The Principles and Practice of Statistics in Biological Research. 3rd ed. W. H. Freeman, New York, 887 pp
  34. SOTA T. & ISHIKAWA R. 2004: Phylogeny and life-history evolution in Carabus (subtribe Carabina: Coleoptera, Carabidae) based on sequences of two nuclear genes. Biol. J. Linn. Soc. 81: 135-149 Go to original source...
  35. STURANI M. 1947: Notizie ecologiche ed etologiche sul Carabus olympiae Sella (Coleoptera: Carabidae). Boll. Ist. Entomol. Univ. Bologna 16: 23-84
  36. TURIN H., PENEV L. & CASALE A. (eds) 2003: The Genus Carabus in Europe - A Synthesis. Pensoft, Sofia, 512 pp
  37. UPTON G.J.G. & FINGLETON B. 1989: Spatial Data Analysis by Example. Vol. II. Categorical and Directional Data. Wiley, New York, 416 pp
  38. ZAR J.H. 1999: Biostatistical Analysis. 4th ed. Prentice Hall, Englewood Cliffs, New Jersey, 718 pp