The influence of salinity on fertilization and larval development of Nereis virens (Polychaeta, Nereidae) from the White Sea
| Autor: | Olga L. Sarantchova, Olga O. Ushakova |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Larva
Nereis virens Ecology Range (biology) media_common.quotation_subject Environmental factor Aquatic Science Biology biology.organism_classification medicine.disease_cause Salinity Human fertilization Trochophore Botany medicine Metamorphosis Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Journal of Experimental Marine Biology and Ecology. 301:129-139 |
| ISSN: | 0022-0981 |
| DOI: | 10.1016/j.jembe.2003.09.025 |
| Popis: | Effect of salinity on fertilization and early development of the polychaeta Nereis virens (Sars) from the White Sea was examined in laboratory experiments. The comparison of salinity resistance of different developmental stages of N. virens showed gradual increase of euryhalinity during ontogenesis—from fertilized eggs to juveniles. Successful fertilization and effective development (≥70–75%) was possible in narrow salinity range 22–34‰. The salinity range of successful development for trochophore and nectochaete larvae reached 14–45‰. This increase of the limits of salinity tolerance in trochophore and nectochaete larvae probably was due to the formation of protonephridium system. Rate of metamorphosis of N. virens was tested under temperature 5, 10, 17 and 23 °C and salinity 22–14‰. The highest rate of metamorphosis was marked at the temperature of 23 °C in salinities higher than 14‰. Our data confirms that N. virens originates from warm seas with oceanic salinity. |
| Databáze: | OpenAIRE |
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