Your browser doesn't support javascript.
loading
Otolith reliability is context-dependent for estimating warming and CO2 acidification impacts on fish growth.
Tang, Bangli; Ding, Liuyong; Ding, Chengzhi; He, Dekui; Su, Haojie; Tao, Juan.
Afiliación
  • Tang B; Institute of International Rivers and Eco-Security, Yunnan University, Kunming, China.
  • Ding L; Institute of International Rivers and Eco-Security, Yunnan University, Kunming, China.
  • Ding C; Institute of International Rivers and Eco-Security, Yunnan University, Kunming, China.
  • He D; Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security, Yunnan University, Kunming, China.
  • Su H; Institute of Yunnan Plateau Indigenous Fish, Kunming, China.
  • Tao J; Ministry of Education Key Laboratory for Transboundary Eco-Security of Southwest, Kunming, China.
Glob Chang Biol ; 30(9): e17501, 2024 Sep.
Article en En | MEDLINE | ID: mdl-39239976
ABSTRACT
Otoliths are frequently used as proxies to examine the impacts of climate change on fish growth in marine and freshwater ecosystems worldwide. However, the large sensitivity differences in otolith growth responses to typical changing environmental factors (i.e., temperature and CO2 concentration), coupled with unclear drivers and potential inconsistencies with fish body growth, fundamentally challenge the reliability of such otolith applications. Here, we performed a global meta-analysis of experiments investigating the direct effects of warming (297 cases) and CO2 acidification (293 cases) on fish otolith growth and compared them with fish body growth responses. Hierarchical models were used to assess the overall effect and quantify the influence of nine explanatory factors (e.g., fish feeding habit, life history stage, habitat type, and experimental amplitude and duration). The overall effects of warming and acidification on otolith growth were positive and significant, and the effect size of warming (effect size = 0.4003, otolith size of the treatment group increased by 49.23% compared to that of the control group) was larger than that of acidification (0.0724, 7.51%). All factors examined contributed to the heterogeneity of effect sizes, with larger responses commonly observed in carnivorous fish, marine species, and young individuals. Warming amplitudes and durations and acidification amplitudes increased the effect sizes, while acidification durations decreased the effect sizes. Otolith growth responses were consistent with, but greater than, fish body growth responses under warming. In contrast, fish body growth responses were not significant under acidification (effect size = -0.0051, p = .6185) and thus cannot be estimated using otoliths. Therefore, our study highlights that the reliability of applying otoliths to examine climate change impacts is likely varied, as the sensitivity of otolith growth responses and the consistency between the growth responses of otoliths and fish bodies are context-dependent.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cambio Climático / Dióxido de Carbono / Membrana Otolítica / Peces Límite: Animals Idioma: En Revista: Glob Chang Biol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cambio Climático / Dióxido de Carbono / Membrana Otolítica / Peces Límite: Animals Idioma: En Revista: Glob Chang Biol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido