J 2021

A New Approach to Evaluate Reproductive Traits in Batch-Spawning Fishes of Indeterminate Fecundity and Asynchronous Oocyte Maturation

HÔRKOVÁ-ŽITŇANOVÁ, Kristína, Kristína ŠVOLÍKOVÁ, Danka HARUŠTIAKOVÁ and Vladimír KOVÁČ

Basic information

Original name

A New Approach to Evaluate Reproductive Traits in Batch-Spawning Fishes of Indeterminate Fecundity and Asynchronous Oocyte Maturation

Authors

HÔRKOVÁ-ŽITŇANOVÁ, Kristína (guarantor), Kristína ŠVOLÍKOVÁ, Danka HARUŠTIAKOVÁ (703 Slovakia, belonging to the institution) and Vladimír KOVÁČ

Edition

Reviews in Fisheries Science and Aquaculture, Taylor & Francis, 2021, 2330-8249

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

40103 Fishery

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 10.405

RIV identification code

RIV/00216224:14310/21:00121428

Organization unit

Faculty of Science

UT WoS

000605039400001

Keywords in English

Indeterminate fecundity; new fecundity evaluation approach; freshwater fishes

Tags

International impact, Reviewed
Změněno: 21/11/2021 22:18, Mgr. Michaela Hylsová, Ph.D.

Abstract

V originále

Fishes are characterized by a great diversity of reproductive strategies that often make fecundity evaluation difficult. Unlike marine fishes, a single consensual concept of terminology and definitions is lacking for freshwater fish fecundity. Several approaches are known from scientific literature for evaluating fecundity in batch spawning fishes of indeterminate fecundity and asynchronous oocyte maturation. These methodological differences impose a bias on the outputs of comparative studies of fecundity. For both theoretical and practical reasons, accurate fecundity data are required to inform the decision-making process in terms of environmental policy and the related applications for the control of non-native species and the conservation management of native species and ecosystems. The main aim of the present study was to review briefly the existing fecundity-evaluation methods, to test among-method compatibility, and to develop a new approach that aims to make fecundity evaluation more systematic and transparent. A simulated 'test' dataset demonstrated considerable variability in the results obtained from the various existing approaches. The literature review and our analyses revealed a need for standardization. Thus, a new approach is proposed here that is based on multiple sampling throughout the reproductive cycle; provides greater overall detail of the species' reproductive traits and permits inter-population comparisons.

Links

EF17_043/0009632, research and development project
Name: CETOCOEN Excellence
LM2018121, research and development project
Name: Výzkumná infrastruktura RECETOX (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR, RECETOX RI
857560, interní kód MU
(CEP code: EF17_043/0009632)
Name: CETOCOEN Excellence (Acronym: CETOCOEN Excellence)
Investor: European Union, Spreading excellence and widening participation