Elevated temperature, but not decreased pH, impairs reproduction in a temperate fish
| Autor: | Ana Margarida Faria, Sam Dupont, Ana F. Lopes |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
0106 biological sciences media_common.quotation_subject Population 010603 evolutionary biology 01 natural sciences Article Animal science Temperate climate Animals Decreased ph education media_common education.field_of_study Multidisciplinary Ecology Reproductive success Hatching Reproduction 010604 marine biology & hydrobiology Temperature Hydrogen-Ion Concentration Perciformes Environmental sciences Reproductive process Fish Female |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Scientific Reports |
| Popis: | Fish reproductive success is linked to the ability of couples to mate and produce clutches that successfully hatch. Environmental stressors like high temperature and low pH can jeopardize this energetically costly process. In this study, exposure to high temperature and low pH was tested on a marine temperate species, Gobiusculus flavescens, to evaluate effects on reproductive performance. Breeding pairs were assigned to different temperatures (+ 0 °C, + 3 °C relative to in situ temperature) and pH levels (8.0, 7.6), in a cross-factorial design for a 3-month period. Reproduction activity, success, and paternal investment were measured throughout the exposure period. Results show reproduction is impaired by elevated temperature, while low pH had little impact. Breeding pairs under high temperature had 3% to 10% hatching success, up to 30% less eggs and eggs up to 20% smaller. Although paternal investment was not affected by tested parameters, males of breeding pairs exposed to elevated temperature had smaller gonadosomatic indexes, which might indicate a lack of investment in the reproductive process. Overall, results show that elevated temperature, expected more frequently in the near future, as a consequence of global warming, may impair key processes like reproduction in temperate fish, with potential consequences for fitness and population replenishment. Fundação para a Ciência e Tecnologia - FCT info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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