geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Short-range orientation in electric fish: an experimental study of passive electrolocation


, : Short-range orientation in electric fish: an experimental study of passive electrolocation. Journal of Experimental Biology 199(Pt 11): 2383-2393

Gymnotiform electric fish are capable of locating and approaching an electrically discharging conspecific over a range of 1-2 m in a behavior called passive electrolocation. This paper investigates the movements of two species in experiments with approaches to stationary dipoles that are either silenced or jumped to a new direction during an approach. Gymnotus carapo fail to find an electrode source in trials in which the dipole electrode is switched off in mid-track. They slow their approach, become disoriented and drift away from the target within seconds of the field being switched off. This result suggests that the fish are unable to construct a cognitive map of a dipole source from brief exposure to local electrosensory stimuli. The second set of trials shows that Brachyhypopomus diazi and Gymnotus carapo bend their body to track electric vectors which are suddenly jumped to a new direction. The latency of the bend response is 0.5 s after the jump. Bending initiates a turn that reduces to zero the error between the fish's direction and the electric field vector and helps keep the fish aligned with the local electric field vector. Together, these experiments suggest that passive electrolocation is stimulus-bound and that these fish find the electrical sources simply by tracking instantaneous local electric current vectors.

US$29.90

PMID: 9114503


Other references

Nagarajan, S., 2000: Plant pathology and Indian agriculture - past, present and future. Although the history of plant pathology in India is only 100 years old the past and future for plant pathology in India is reviewed.

Fan, Y-Xin.; Wong, L.; Marino, M.P.; Ou, W.; Shen, Y.; Wu, W.Jin.; Wong, K-Kin.; Reiser, J.; Johnson, G.R., 2013: Acquired substrate preference for GAB1 protein bestows transforming activity to ERBB2 kinase lung cancer mutants. Activating mutations in the αC-β4 loop of the ERBB2 kinase domain, such as ERBB2(YVMA) and ERBB2(G776VC), have been identified in human lung cancers and found to drive tumor formation. Here we observe that the docking protein GAB1 is hyper-phosp...

Yang, C.; Sugimoto, H.; Giraldo, M.; Afdhal, N.; Zeisberg, M.; Kalluri, R., 2002: Bone morphogenic protein-7, a member of the TGF-beta superfamily, accelerates liver regeneration after partial hepatectomy in mice. Hepatology 36(4 Part 2): 470A, October

Harbour, B.L., 2005: Making Baylor Health Care System special. Proceedings 15(1): 23-25

Al-Rabeeah, A.; Thurston, O.G.; Walker, K., 1986: Effect of total parenteral nutrition on biliary lipids in neonates. To study the effect of total parenteral nutrition (TPN) on biliary lipids in critically ill neonates, biliary lipid concentrations were determined in 13 neonates before starting TPN, in 8 receiving TPN for up to 2 weeks and in 9 receiving TPN for...

Phelan, P.D.; Chopin, F., 1995: Chopin's illnesses. Journal of the Royal Society of Medicine 88(8): 483-484

Gaczynska, M.; Osmulski, P.A.; Gao, Y.; Post, M.J.; Simons, M., 2003: Proline- and arginine-rich peptides constitute a novel class of allosteric inhibitors of proteasome activity. Substrate-specific inhibition of the proteasome has been unachievable despite great interest in proteasome inhibitors as drugs. Recent studies demonstrated that PR39, a natural proline- and arginine-rich antibacterial peptide, stimulates angiogene...

Lee, S.Soo.; Park, S.Ho.; Kim, H.Jin.; Kim, S.Yeon.; Kim, M-Yeong.; Kim, D.Yoon.; Suh, D.Jin.; Kim, K.Mo.; Bae, M.Hyun.; Lee, J.Yeon.; Lee, S-Gyu.; Yu, E.Sil., 2010: Non-invasive assessment of hepatic steatosis: prospective comparison of the accuracy of imaging examinations. Despite increasing use of various imaging examinations for non-invasive assessment of hepatic steatosis (HS), their relative accuracy is unknown. The objective of this study is to prospectively compare the accuracy of computed tomography (CT), dua...

Cherry, R.; Thomas, D.W., 2008: Infant feeding in special circumstances. Pediatrics in Review 29(8): 274-9; Quiz 280

D'Imperio, N.; Londei, M.; Rimondini, S.; Formica, G.; Fratucello, F., 1984: Morphometric-functional study of the small intestine in the aged. I. Morphometric study of villo-cryptae architecture. Giornale di Clinica Medica 65(9-10): 419-425