The effect of temperature on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Tubificidae)
| Autor: | Roberto da Gama Alves, Haroldo L. S. Nascimento |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
biology
Limnodrilus hoffmeisteri Ecology Aquatic ecosystem media_common.quotation_subject Zoology Aquatic animal reproductive rate biology.organism_classification Branchiura sowerbyi Aquatic environment Oligochaeta Indicator species lcsh:Zoology Cocoons tubificid eggsper cocoon Animal Science and Zoology lcsh:QL1-991 Reproduction media_common |
| Zdroj: | Zoologia (Curitiba) v.26 n.1 2009 Zoologia (Curitiba. Online) Sociedade Brasileira de Zoologia instacron:SBZ Zoologia (Curitiba), Vol 26, Iss 1, Pp 191-193 (2009) Zoologia (Curitiba), Volume: 26, Issue: 1, Pages: 191-193, Published: MAR 2009 |
| Popis: | The tubificid worm Limnodrilus hoffmeisteri Claparede, 1862 is widely used as an indicator of organic pollution in aquatic environments. Nevertheless, little is known about its biology. The present work aimed to compare the reproductive rate of L. hoffmeisteri raised at three different temperatures (15, 20 and 25°C). Seventy-five adult individuals were kept in fifteen 250 ml beakers (five individuals per beaker) containing sand and dechlorinated tap-water each. Beakers were arranged so as to form three groups of five. Each group was kept in a given temperature for 21 days. Results show that worms raised at 25°C produced a significantly larger number of eggs compared to those raised either at 15 or 20°C, as observed in the tropical tubificid Branchiura sowerbyi Beddard, 1892. |
| Databáze: | OpenAIRE |
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