In vivo tracking of maturation in male European eel, Anguilla anguilla (L.), by computed tomography

Müller, T. and Molnár, T. and Szabó, A. and Yamaha, E. and Járási, Éva and Bercsényi, M. and Specziár, A. and Urbányi, B. and Romvári, R. (2012) In vivo tracking of maturation in male European eel, Anguilla anguilla (L.), by computed tomography. Acta Biologica Hungarica, 63 (2). pp. 180-188. ISSN 0236-5383

[img] Text
Restricted to Repository staff only until 30 June 2032.

Download (327kB)


The present study aimed in vivo tracking of maturation of male eel by computed tomography (CT). Additionally, individually monitored testes sizes were correlated with the conventionally used external maturity indicators (i.e. eye and nose indexes) in order to test and improve their usefulness at individual level. Testes could be clearly identified with the CT from the end of the third week of hCG administration routinely used to induce maturation in fish. The volume of testes increased exponentially during hormone treatment, and by the end of the sixth week of maturation procedure all males produced motilable spermatozoa. Present results prove that testes size can noninvasively be monitored with CT from maturity level where testes size rich 3000 mm<sup>3</sup> volume. Eye and nose indexes are in close correlation with testes volume and thus can also be effectively used to monitor maturaty level of male eel, but preferably only at stock level. However, due to their high individual variability, these indexes can be applied only with caution at individual level and should be supplemented with other noninvasive techniques such as CT.

Item Type: Article
Subjects: Q Science / természettudomány > QH Natural history / természetrajz
Depositing User: Ágnes Sallai
Date Deposited: 05 Jan 2018 09:24
Last Modified: 05 Jan 2018 09:24

Actions (login required)

Edit Item Edit Item