Carlos A. Flores, Michael R. Crossland, Medardo Arreortúa, Edna González-Bernal
{"title":"墨西哥豹纹蛙幼体(Lithobates spectabilis)对引入的虹鳟鱼的反应","authors":"Carlos A. Flores, Michael R. Crossland, Medardo Arreortúa, Edna González-Bernal","doi":"10.1002/aqc.4254","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The introduction of invasive fish for aquaculture can significantly impact native aquatic fauna, especially in regions where native amphibians have a biphasic life cycle. We conducted three laboratory experiments to assess the effects of introduced rainbow trout (<i>Oncorhynchus mykiss</i>) aquaculture on the native showy leopard frog (<i>Lithobates spectabilis</i>) in Mexico. We aimed to understand the effects of trout visual and chemical cues on tadpole behaviour, and the long-term effects of chemical cues (in interaction with tadpole density) on tadpole growth, development and survival. In Experiment 1, we exposed groups of tadpoles to the visual cue of a trout, comparing their refuge use and position within the tank to a control group. In Experiment 2,we exposed groups of tadpoles to trout chemical cues contrasting their refuge use to a control group. In Experiment 3, we exposed tadpoles at different densities to trout chemical cues for a prolonged period, recording their growth, development and survival. Results showed that tadpoles did not alter refuge use in response to trout visual cues but positioned themselves farther from these cues compared to controls. Tadpoles increased refuge use in response to chemical cues. Long-term exposure to chemical cues did not affect tadpole growth, development or survival, but higher densities led to lower survival rates. Our findings suggest that trout farming, through fish escapement or untreated farm water discharge containing trout chemical cues, could trigger behavioural responses in <i>L.</i> <i>spectabilis</i> larvae, increasing refuge use and local tadpole densities, ultimately compromising their survival and, potentially, species persistence.</p>\n </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 9","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Responses of Showy Leopard Frog Larvae (Lithobates spectabilis) to the Presence of Introduced Rainbow Trout in Mexico\",\"authors\":\"Carlos A. Flores, Michael R. Crossland, Medardo Arreortúa, Edna González-Bernal\",\"doi\":\"10.1002/aqc.4254\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>The introduction of invasive fish for aquaculture can significantly impact native aquatic fauna, especially in regions where native amphibians have a biphasic life cycle. We conducted three laboratory experiments to assess the effects of introduced rainbow trout (<i>Oncorhynchus mykiss</i>) aquaculture on the native showy leopard frog (<i>Lithobates spectabilis</i>) in Mexico. We aimed to understand the effects of trout visual and chemical cues on tadpole behaviour, and the long-term effects of chemical cues (in interaction with tadpole density) on tadpole growth, development and survival. In Experiment 1, we exposed groups of tadpoles to the visual cue of a trout, comparing their refuge use and position within the tank to a control group. In Experiment 2,we exposed groups of tadpoles to trout chemical cues contrasting their refuge use to a control group. In Experiment 3, we exposed tadpoles at different densities to trout chemical cues for a prolonged period, recording their growth, development and survival. Results showed that tadpoles did not alter refuge use in response to trout visual cues but positioned themselves farther from these cues compared to controls. Tadpoles increased refuge use in response to chemical cues. Long-term exposure to chemical cues did not affect tadpole growth, development or survival, but higher densities led to lower survival rates. Our findings suggest that trout farming, through fish escapement or untreated farm water discharge containing trout chemical cues, could trigger behavioural responses in <i>L.</i> <i>spectabilis</i> larvae, increasing refuge use and local tadpole densities, ultimately compromising their survival and, potentially, species persistence.</p>\\n </div>\",\"PeriodicalId\":55493,\"journal\":{\"name\":\"Aquatic Conservation-Marine and Freshwater Ecosystems\",\"volume\":\"34 9\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-09-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Aquatic Conservation-Marine and Freshwater Ecosystems\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/aqc.4254\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aquatic Conservation-Marine and Freshwater Ecosystems","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aqc.4254","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Responses of Showy Leopard Frog Larvae (Lithobates spectabilis) to the Presence of Introduced Rainbow Trout in Mexico
The introduction of invasive fish for aquaculture can significantly impact native aquatic fauna, especially in regions where native amphibians have a biphasic life cycle. We conducted three laboratory experiments to assess the effects of introduced rainbow trout (Oncorhynchus mykiss) aquaculture on the native showy leopard frog (Lithobates spectabilis) in Mexico. We aimed to understand the effects of trout visual and chemical cues on tadpole behaviour, and the long-term effects of chemical cues (in interaction with tadpole density) on tadpole growth, development and survival. In Experiment 1, we exposed groups of tadpoles to the visual cue of a trout, comparing their refuge use and position within the tank to a control group. In Experiment 2,we exposed groups of tadpoles to trout chemical cues contrasting their refuge use to a control group. In Experiment 3, we exposed tadpoles at different densities to trout chemical cues for a prolonged period, recording their growth, development and survival. Results showed that tadpoles did not alter refuge use in response to trout visual cues but positioned themselves farther from these cues compared to controls. Tadpoles increased refuge use in response to chemical cues. Long-term exposure to chemical cues did not affect tadpole growth, development or survival, but higher densities led to lower survival rates. Our findings suggest that trout farming, through fish escapement or untreated farm water discharge containing trout chemical cues, could trigger behavioural responses in L.spectabilis larvae, increasing refuge use and local tadpole densities, ultimately compromising their survival and, potentially, species persistence.
期刊介绍:
Aquatic Conservation: Marine and Freshwater Ecosystems is an international journal dedicated to publishing original papers that relate specifically to freshwater, brackish or marine habitats and encouraging work that spans these ecosystems. This journal provides a forum in which all aspects of the conservation of aquatic biological resources can be presented and discussed, enabling greater cooperation and efficiency in solving problems in aquatic resource conservation.