Unusual Thermoregulatory Behavior of Anadromous and Resident Larvae of the River Lamprey Lampetra fluviatilis (Petromyzontidae)
| Autor: | A. O. Zvezdin, I. L. Golovanova, A. V. Kucheryavyy, A. K. Smirnov, V. K. Golovanov |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Fish migration Larva biology 010604 marine biology & hydrobiology Lamprey Zoology 04 agricultural and veterinary sciences Aquatic Science biology.organism_classification 01 natural sciences Acclimatization Lampetra 040102 fisheries 0401 agriculture forestry and fisheries Ecology Evolution Behavior and Systematics |
| Zdroj: | Inland Water Biology. 13:648-654 |
| ISSN: | 1995-0837 1995-0829 |
| DOI: | 10.1134/s1995082920060127 |
| Popis: | The results of studying the thermal tolerance and thermoregulatory behavior of the river lamprey larvae Lampetra fluviatilis (L.) have been reported. The upper lethal temperatures, recorded at a waterheating rate of ~8°C/h–1 and acclimation temperature of 18°C, do not differ in the specimens regarded as descendants derived from the ancestors of anadromous and resident life forms, comprising 34.3 and 34.5°C, respectively (p > 0.05). In addition, no significant differences in the temperatures preferred by larvae from the populations of different life strategies are revealed. These individuals do not show any distinct thermal preferendum, distributing across the thermal gradient field presented to them. The mean values for the preferred temperatures on each day of a 3-day experiment comprised 18.3, 19.3, and 19.8°C. |
| Databáze: | OpenAIRE |
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