Influence of temperature, photoperiod and nutrition on growth and consumption 
of Chaetopteryx villosa (Trichoptera)

Wagner, Rüdiger

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Influence of temperature, photoperiod and nutrition on growth and consumption of Chaetopteryx villosa (Trichoptera)

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Wagner, Rüdiger
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Zitation

Wagner, R. (1990). Influence of temperature, photoperiod and nutrition on growth and consumption of Chaetopteryx villosa (Trichoptera). Holarctic Ecology, 13(3), 247-254.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000F-CA4D-5

Zusammenfassung

Chaetopteryx villosa Fabr. is uni- or semivoltine. The species was reared at 6°C and 10°C (8 h light, 16 h dark = LD 8/16) and at 10°C and 14°C (LD 14/10). Larval instar duration and pupal period decreased with increasing temperature. Instars II-IV were completed within 2-5 wk. Vth instar larvae pupated after two to twelve months. Pupal development required between one and three months. At 6°C no specimens pupated. At 10°C, LD 14/10 accelerated the development of instars II, IV, V and pupae. Head capsule widths were different between laboratory and field specimens. Relative consumption rate (RCR) ranged between 3.07 ± 1.12 (instar II, 14°C and 0.09 ± 0.05 (instar V 6°C) mg mg^-1d^-1. Growth rate, relative growth rate and efficiency of conversion were calculated. In a field experiment fine particulate versus coarse particulate organic material were tested as food sources. FPOM-fed specimens were smaller than those fed with FPOM + CPOM.