Sex-specific probability of PIT tag retention in a cyprinid fish

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00510162" target="_blank" >RIV/60077344:_____/19:00510162 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12520/19:43902570

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0165783619301729?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0165783619301729?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fishres.2019.105325" target="_blank" >10.1016/j.fishres.2019.105325</a>

Result language

angličtina

Original language name

Sex-specific probability of PIT tag retention in a cyprinid fish

Original language description

The estimation of age- and sex-specific mortalities is essential for constructing fish life tables and subsequent population modelling. However, the ecological data behind these parameter estimates acquired in nature may be systematically biased by the methodology of the study. To demonstrate mark retention bias by the widely used passive integrated transponder tags (PIT tags), we analysed long-term data showing the probability of tag retention within the body cavity in relation to fish sex. We used the cyprinid fish asp (Leuciscus aspius) as a model species with a cystovarian type of ovulation (eggs do not enter the body cavity). Altogether, 2312 fish were tagged with PIT tags in 2014-2018 and fin clipped and monitored for up to five years. In this period, 583 asp were recaptured at least one year after tagging, and fish that lost their tags were identified by regenerated fin. Based on recaptured fish, we show that the female tag retention rate is significantly lower than the male retention rate (85.3% in females vs. 97.8% in males). Furthermore, we used portable antenna to detect expelled PIT tags and localized a higher number of expelled female PIT tags on the spawning ground in comparison with those from males (123 female vs. 6 male PIT tags). This study demonstrates that systematic bias may potentially occur since PIT tags may penetrate gonads and leave the body during reproduction. We encourage designing PIT tag monitoring studies with respect to potential unequal sex-specific tag retention capabilities to avoid drawing inaccurate conclusions from biased data.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Fisheries Research

ISSN

0165-7836

e-ISSN

—

Volume of the periodical

219

Issue of the periodical within the volume

NOV

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

1-6

UT code for WoS article

000488300900022

EID of the result in the Scopus database

2-s2.0-85068985777