The effects of temperature and photoperiod on diapause development in the eggs of four species of <i>Lestes</i> (Odonata: Zygoptera)

Sawchyn, W. W.; Church, N. S.

doi:10.1139/z73-179

Cited by 38 publications

(47 citation statements)

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“…Diapause induction and cessation has been shown to be elicited by photoperiod and temperature in a range of odonates (Boehms 1971;Corbet 1956b;Ingram 1975;Pritchard 1989;Sawchyn & Church 1973). These studies provide good evidence for Norling's (1984b) two-stage model of diapause induction.…”

Section: Diapausementioning

confidence: 72%

“…The same experimental paradigm has been used in many studies to examine effects of temperature and photoperiod Sawchyn & Church 1973). However, it was not until a tightly controlled experiment by Johansson & Rowe (1999) on Lestes congener (Hagen, 1861) that an increase in developmental rate (moult frequency) was unequivocally demonstrated.…”

Section: Temperature and Photoperiodmentioning

confidence: 99%

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The effects of environmental warming on Odonata: a review

Hassall¹,

Thompson²

2008

International Journal of Odonatology

186

156

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Climate change brings with it unprecedented rates of increase in environmental temperature, which will have major consequences for the earth's flora and fauna. The Odonata represent a taxon that has many strong links to this abiotic factor due to its tropical evolutionary history and adaptations to temperate climates. Temperature is known to affect odonate physiology including life-history traits such as developmental rate, phenology and seasonal regulation as well as immune function and the production of pigment for thermoregulation.

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Section: Diapausementioning

confidence: 72%

Section: Temperature and Photoperiodmentioning

confidence: 99%

The effects of environmental warming on Odonata: a review

Hassall¹,

Thompson²

2008

International Journal of Odonatology

186

156

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“…They can occupy habitats which may freeze to the bottom despite the absence of an egg diapause which performs a similar function in the Lestidae (Sawchyn and Church 1973). They can occupy habitats which may freeze to the bottom despite the absence of an egg diapause which performs a similar function in the Lestidae (Sawchyn and Church 1973).…”

Section: Discussionmentioning

confidence: 99%

The Biology of Two Related Species of Coenagrionid Dragonflies (Odonata: Zygoptera) in Western Canada

Sawchyn

Gillott

1975

Can Entomol

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Can. Ent. 107: 119-128 (1975) The biology of Coenagrion angulaturn Walker and C . resolutum Hagen in Saskatchewan has been studied. In these species embryonic development begins as soon as the eggs are laid and is completed in the field within 3 weeks. Larval development is rapid and larvae in the final instar were first collected before the middle of September. Development ceases during the first 2 weeks of October when the water temperature is about 2°C. By this time the majority of larvae are in the last three instars. Larvae overwinter frozen in the ice 15 to 20 cm below the pond surface. They are able to survive temperatures as low as -5" to -6°C though these extremes are not normally experienced in the field because of snow cover. Although the study pond filled with runoff water by mid-April no change in the larval population structure occurred until mid-May. Emergence, which is highly synchronous, begins in the last week of May. However, it is governed by the prevailing air and water temperatures, and occurs only when the mean daily water temperature exceeds 12°C and the mean maximum air temperature reaches 20" to 21°C. Most insects emerge within 10 days of the first appearance of the adults. Sexual maturation takes about 1 week. Oviposition occurs while the pair are in tandem. Preferred oviposition sites are the submerged portions of stalks of floating plants such as Utricularia, Ranunculus, and Potamogeton. The observations are discussed in terms of the species' ability to survive the climatic extremes of central Canada.

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“…Most species of Lestes (178) and Sympe trum (3,18,194), and certain Aeshna fa ll in the fi rst type; Lestes congener CORBET (178) and most species of Aeshna (3) fall in the second. Sometimes, perhaps when the oviposition period is protracted, both types may be found within .…”

Section: The Egg Stagementioning

confidence: 99%

“…The rate of development and the time of hatching of overwintering eggs are regulated seasonally by the existence of three phases of development (termed prediapause, diapause, and postdiapause development), each characterized by a distinctive re sponse to temperature (18). Such responses may be augmented, as in some Lestes (178), by a sensitivity to photoperiod, which apparently reduces the frequency of the deviant hatching that occasionally occurs in autumn (51). Prolongation of the adult prereproductive period in warmer parts of a species' range (e.g.…”

Section: The Egg Stagementioning

confidence: 99%

Biology of Odonata

Corbet¹

1980

Annu. Rev. Entomol.

345

214

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INTRODUCTIONOdonata, or dragonfli es, constitute a small, well known, widely distributed order of insects. The 5000 or so species belong to three suborders (all referred to here as dragonflies): the Anisozygoptera, containing only two known species; the Zygoptera; and the Anisoptera. Typically large and active by day, the winged adults are conspicuous at ponds and rivers, which usually form the encounter site (see 155) or "rendezvous" (30) where repro ductive behavior takes place. Accordingly, dragonflies provide valuable models for interpreting the behavioral interactions of many other insects that assemble for mating but are less readily watched in the field.Two books treat the biology of the order: the first (201) emphasizes systematics and functional morphology, and the second (30), ecology and behavior. This article is a review of the main features of the dragonfl y life history and so can be regarded as a highly condensed supplement to the second of these books. Accordingly, I give prominence here to research published after 1960, and have not cited sources for information already reported in the second book (30).A topic not reviewed but which deserves mention here is the growing extent to which faunistic records are being used as source material by scientists who are trying to check or mitigate habitat destruction and species extinction by recommending the creation of nature reserves (e.g. 4, 136, 186, 225). As freshwater insects, dragonflies are exceptionally vulnerable to urban and agricultural expansion, which commonly entail the draining of ponds and marshes. HABITAT SELECTIONImmediately after emergence, adults typically fly away from water, not returning until reproductively mature, several or many days later. At this

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The effects of temperature and photoperiod on diapause development in the eggs of four species of Lestes (Odonata: Zygoptera)

Cited by 38 publications

References 0 publications

The effects of environmental warming on Odonata: a review

The effects of environmental warming on Odonata: a review

The Biology of Two Related Species of Coenagrionid Dragonflies (Odonata: Zygoptera) in Western Canada

Biology of Odonata

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