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Survival, growth and tag retention of juvenile European eel (Anguilla anguilla L.) with implanted 12 mm passive integrated transponder tags and acoustic tags

Journal Article · · Journal of Fish Biology
DOI:https://doi.org/10.1111/jfb.15183· OSTI ID:2471544
 [1];  [2];  [1];  [3]
  1. Technical University of Denmark, Silkeborg (Denmark)
  2. Technische Universität Dresden (Germany)
  3. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, VA (United States)

To evaluate the efficiency of tagging juvenile European eels with implanted 12 mm passive integrated transponder (PIT) tags or Eel/Lamprey acoustic transmitters (ELATs), the authors studied tag retention, survival and growth of eels (7–25 g). Experimental eels were obtained from an eel farm, tagged and then released in a series of shallow dug-out ponds with a surface area of c. 200 m2. Tagged and control eels were distributed evenly, with 50 tagged and 50 control eels in each of four ponds, giving a total of 200 tagged and 200 control eels mixed. After 76 days, the ponds were drained, and eels were sampled and measured. A total of 344 eels (86%) were recaptured, indicating high survival. Tag retention was 99% as only one of the recaptured PIT-tagged eels had lost the tag and none of the ELAT tagged. The results demonstrated that tagging juvenile eels >16 cm with these small tags is indeed feasible. The growth of tagged and control fish was differentiated but generally low in length and negative in mass but did not differ between the three groups.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2471544
Journal Information:
Journal of Fish Biology, Journal Name: Journal of Fish Biology Journal Issue: 5 Vol. 101; ISSN 0022-1112
Publisher:
Wiley - Fisheries Society of the British IslesCopyright Statement
Country of Publication:
United States
Language:
English

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