Life cycle of <i>Chaetopteryx villosa</i> (Fabricius, 1798) (Trichoptera: Limnephilidae) in a lowland‐ and a mountain‐stream in western Norway

Andersen, Trond; Tysse, Åsmund

doi:10.1080/01650428409361187

Cited by 9 publications

(12 citation statements)

References 17 publications

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“…Laboratory experiments at constant temperatures of 7, 10 and L3°C are not yet complete, but already indicate the possibility of a semivoltine life cycle at temperatures below 1(I°C. in agreement with the field observations of Andersen and Tysse (1984) in Scandinavia.…”

Section: Lire Cyclesupporting

confidence: 92%

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Egg development and life cycle of Chaetopteryx villosa (Trichoptera)

Wagner

1986

Ecography

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Combined field and laboratory investigations showed that C. villosa was univoltine in the Breitenbach, Germany. Speed and duration of embryogenesis were determined by temperature. Lowest values of accumulated temperature occurred at 6 and 8°C, when the duration of embryogenesis was shortest, and egg mortality was low. Egg masses exposed at upstream field sites needed similar time and accumulated temperatures for embryogenesis to those expected from laboratory experiments. At a downstream site embryogenesis was accelerated, possibly depending on increased daily temperature fluctuations in spring. At all field sites the emergence period of adults lasted from September until December. Size and weight of both sexes were significantly lower at the upstream site, not necessarily as a result of temperature, but possibly caused by differences in nutrition.

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Section: Lire Cyclesupporting

confidence: 92%

“…The speeies is univoltine in Central Europe, but may be semivoltinc in parts of Scandinavia, and higher regions of the Alps and Pyrenees (Gledhil! !96(), Hiekin 1967, Decamps 1968, Elliott 1971, Andersen and Tysse 1984.…”

Section: Introductionmentioning

confidence: 99%

Egg development and life cycle of Chaetopteryx villosa (Trichoptera)

Wagner

1986

Ecography

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“…A period with temperatures of at least c. 10°C is needed to initiate pupation, otherwise the larvae remain in instar V until they die. Andersen and Tysse (1984) found high mountain streams in Norway with temperatures of over 10°C for more than 4 wk in summer. For about seven months the streams were covered by ice and the water temperature was below 5°C.…”

Section: Duration Of Instars At Difterent Temperaturesmentioning

confidence: 95%

“…It is not possible to predict the development of C. villosa larvae in terms of temperature sums alone because temperature must be considered in relation to seasonal and diel fluctuations. For example, it is evident that eggs survive in streams at temperatures below 2°C (Andersen andTysse 1984, Wagner 1986). Temperatures above 6°C are needed to initiate pupation, although larval development occurs at 6°C.…”

Section: Duration Of Instars At Difterent Temperaturesmentioning

confidence: 99%

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

Wagner¹

1990

Ecography

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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‐1 d‐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. Pupation was initiated earlier in the FPOM fed group and lasted longer than in the other groups.

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Biochemically identified neuropeptides in a caddisfly (Trichoptera) and a pygmy mole cricket (Orthoptera: Caelifera: Tridactyloidea)

GÄde

Šimek

Marco

2021

Arch Insect Biochem Physiol

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One representative of the order Trichoptera, namely the caddisfly Chaetopteryx villosa, was investigated along with the pygmy mole cricket Xya capensis which is a representative of the most basal superfamily of the caeliferan Orthoptera, that is, the Tridactyloidea. From both clades neuropeptides have not been biochemically characterized before this study. Here, members of the adipokinetic hormone family (AKHs) are sequenced via liquid chromatography (LC)‐ion trap mass spectrometry from methanolic extracts from the corpora cardiaca of respective species. The corpora cardiaca were dissected, methanolic extracts prepared, peptides separated by liquid chromatography (LC), and AKHs detected and sequenced by ion trap mass spectrometry. Both species investigated contain an octapeptide AKH: the trichopteran species has the peptide with the sequence pGlu‐Leu‐Thr‐Phe‐Thr‐Pro‐Ser‐Trp amide; the ambiguity of the isobaric amino acids Leu and Ile at position two was solved by comparing retention times on LC and by co‐elution with the synthetic Leu2‐form. This peptide is known as Aedae‐AKH and found in certain dipteran species and in an alderfly (Megaloptera). The tridactyloid species contains the peptide with the sequence pGlu‐Val‐Asn‐Phe‐Ser‐Pro‐Gly‐Trp amide which had first been identified in a member of the order Mantophasmatodea and is called Manto‐CC. Comparisons are made between the AKH complements of the sister groups Trichoptera and Lepidoptera and their possible relatedness and, on the other hand, between the AKH of X. capensis with those of closely related caeliferan superfamilies. The biology of the two studied species is used to speculate about a possible function of the elucidated hormones. Lastly, the use of a larval stage as starting material for structural neuropeptide information is discussed.

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Life cycle of Chaetopteryx villosa (Fabricius, 1798) (Trichoptera: Limnephilidae) in a lowland‐ and a mountain‐stream in western Norway

Cited by 9 publications

References 17 publications

Egg development and life cycle of Chaetopteryx villosa (Trichoptera)

Egg development and life cycle of Chaetopteryx villosa (Trichoptera)

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

Biochemically identified neuropeptides in a caddisfly (Trichoptera) and a pygmy mole cricket (Orthoptera: Caelifera: Tridactyloidea)

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