The effect of temperature on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Tubificidae)

AUTOR(ES)

Nascimento, Haroldo L. S., Alves, Roberto G.

FONTE

Zoologia (Curitiba)

DATA DE PUBLICAÇÃO

2009-03

RESUMO

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.

Documentos Relacionados

• ASPECTOS REPRODUTIVOS DE Limnodrilus hoffmeisteri CLAPAREDE, 1862 E Branchiura sowerbyi BEDDARD, 1892 (OLIGOCHAETA: TUBIFICIDAE)
• Influence of body weight and substrate granulometry on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Naididae: Tubificinae)
• Produção de casulos e taxa de eclosão de Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
• Temperature has a causal effect on avian timing of reproduction
• Changes in soil quality after passage through the gut of Pontoscolex corethrurus (Oligochaeta: Annelida).