Key environmental factors determining life history strategies of river fishes and their historical changes in the Yangtze River

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F25%3A00618563" target="_blank" >RIV/68081766:_____/25:00618563 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2772735125000198" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2772735125000198</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.watbs.2025.100376" target="_blank" >10.1016/j.watbs.2025.100376</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Key environmental factors determining life history strategies of river fishes and their historical changes in the Yangtze River

Popis výsledku v původním jazyce

Life history theory predicts that species-specific life history traits are shaped by variations in environmental conditions. Understanding the key environmental factors determining life history strategies can provide insights into the mechanisms of community assembly and identify potential biodiversity threats by predicting selective responses to environmental perturbations. We collected life history traits for fish species from 14 river basins across 5 continents to identify their life history strategies and explore the related key environmental factors. Our results showed that fishes from all the river basins conformed to a triangular life history strategy model including periodic, opportunistic, and equilibrium endpoints. However, the proportions of these three strategies varied significantly amongst river basins. For example, the Rhine River basin had a high proportion of fish with the periodic strategy and a low proportion of fish with the opportunistic strategy, whereas the Mississippi River basin displayed the opposite pattern. At the river basin extent, linear regression analysis revealed that the proportion of species with the opportunistic strategy increased with mean annual temperature, annual variation in river discharge, and annual precipitation, and was negatively associated with latitude. In contrast, species with the periodic strategy were negatively related to annual variation in river discharge and positively with latitude. These findings corroborate that opportunistic species are adapted to unpredictable environments, whereas periodic species are adapted to predictable environments. We then used molecular phylogeny to reconstruct the ancestral state of Yangtze fishes and analyzed the percentage composition of the three life history strategies across geological times. We found dominance of the equilibrium strategy in the Upper Cretaceous followed by dominance of periodic fishes before the Paleocene. Opportunistic fish species began to dominate the Yangtze River basin after the Miocene, with more than half of the fish species being opportunistic. This implies that the environmental conditions in the Yangtze River basin evolved from stable (low annual variation in river discharge) to unstable (high annual variation in river discharge and high annual precipitation) states, possibly associated with the onset of seasonality expressed as prevalence of a monsoon climate and the overall alteration of precipitation patterns. Life history theory can give hints for assessing river ecological conditions because changes in strategy proportions may indicate the alteration of environmental conditions. Such changes can aid in developing suitable strategies for river ecological protection and fish resource management.

Název v anglickém jazyce

Key environmental factors determining life history strategies of river fishes and their historical changes in the Yangtze River

Popis výsledku anglicky

Life history theory predicts that species-specific life history traits are shaped by variations in environmental conditions. Understanding the key environmental factors determining life history strategies can provide insights into the mechanisms of community assembly and identify potential biodiversity threats by predicting selective responses to environmental perturbations. We collected life history traits for fish species from 14 river basins across 5 continents to identify their life history strategies and explore the related key environmental factors. Our results showed that fishes from all the river basins conformed to a triangular life history strategy model including periodic, opportunistic, and equilibrium endpoints. However, the proportions of these three strategies varied significantly amongst river basins. For example, the Rhine River basin had a high proportion of fish with the periodic strategy and a low proportion of fish with the opportunistic strategy, whereas the Mississippi River basin displayed the opposite pattern. At the river basin extent, linear regression analysis revealed that the proportion of species with the opportunistic strategy increased with mean annual temperature, annual variation in river discharge, and annual precipitation, and was negatively associated with latitude. In contrast, species with the periodic strategy were negatively related to annual variation in river discharge and positively with latitude. These findings corroborate that opportunistic species are adapted to unpredictable environments, whereas periodic species are adapted to predictable environments. We then used molecular phylogeny to reconstruct the ancestral state of Yangtze fishes and analyzed the percentage composition of the three life history strategies across geological times. We found dominance of the equilibrium strategy in the Upper Cretaceous followed by dominance of periodic fishes before the Paleocene. Opportunistic fish species began to dominate the Yangtze River basin after the Miocene, with more than half of the fish species being opportunistic. This implies that the environmental conditions in the Yangtze River basin evolved from stable (low annual variation in river discharge) to unstable (high annual variation in river discharge and high annual precipitation) states, possibly associated with the onset of seasonality expressed as prevalence of a monsoon climate and the overall alteration of precipitation patterns. Life history theory can give hints for assessing river ecological conditions because changes in strategy proportions may indicate the alteration of environmental conditions. Such changes can aid in developing suitable strategies for river ecological protection and fish resource management.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Water Biology and Security

ISSN

2772-7351

e-ISSN

2772-7351

Svazek periodika

4

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

12

Strana od-do

100376

Kód UT WoS článku

001533934100001

EID výsledku v databázi Scopus

2-s2.0-85219010050