Life Cycle and Synchronization of Nymphal Development of the Mayfly <i>Ephoron shigae</i> in Japan (Ephemeroptera: Polymitarcyidae)

Watanabe, Norihisa; Ohkita, Akira

doi:10.1076/0165-0424(200004)22:2;1-p;ft108

Cited by 19 publications

(18 citation statements)

References 13 publications

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“…Watanabe (1998) and Giberson and Galloway (1985) documented the effects of temperature upon embryonic development and egg hatching rate in the congenerics Ephoron shigae and Ephoron album, respectively. Several studies have demonstrated the ultimate impacts of temperature on nymphal development, timing of emergence, and duration of the emergence period in E. leukon, E. album, and E. shigae (Giberson and Galloway 1985;Snyder et al 1991;Watanabe and Ohkita 2000;Watanabe and Takao 1991). The seasonal diapause is quite useful for providing late-stage embryos and early nymphal stages throughout the year as embryos can be maintained in this state for over a year.…”

Section: Embryo Collection and Fixationmentioning

confidence: 97%

The expression of wingless and Engrailed in developing embryos of the mayfly Ephoron leukon (Ephemeroptera: Polymitarcyidae)

O’Donnell

Jockusch

2010

Dev Genes Evol

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The expression of the segment polarity genes wingless (wg) and engrailed (en) is highly conserved across arthropods, and these genes play a crucial role in patterning of the segmental body plan. Investigations of the expression and function of wg and en have focused primarily upon holometabolous insects, with the notable exception of recent detailed work in Oncopeltus (Hemiptera), Schistocerca, and Gryllus (Orthoptera). An increase in the phylogenetic breadth of our understanding of molecular patterning is crucial to ascertain the extent of conservation and divergence in molecular patterning mechanisms during insect embryogenesis. We examined the expression of wg mRNA transcripts and localization of En protein during embryogenesis in the mayfly Ephoron leukon (Ephemeroptera: Polymitarcyidae). These data represent one of the first embryonic gene expression pattern data for a mayfly, a lineage that may be the sister group to all other winged insects. Many aspects of wg and En expression are highly conserved, notably their expression in juxtaposed stripes in each parasegment, as well as expression domains in the procephalon, mouthparts, thoracic limbs, and nervous system. Future work in mayflies can be used to determine if conservation extends to other components of the segmentation hierarchy.

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Section: Embryo Collection and Fixationmentioning

confidence: 97%

The expression of wingless and Engrailed in developing embryos of the mayfly Ephoron leukon (Ephemeroptera: Polymitarcyidae)

O’Donnell

Jockusch

2010

Dev Genes Evol

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“…This information is especially important in evaluations of macroinvertebrate functional roles, including contributions to secondary production in stream ecosystems (Benke 1993). The life cycles of some Japanese mayfly species have been subjected to detailed investigation (Gose 1970(Gose , 1971(Gose , 1973Watanabe and Ohkita 2000;Ishiwata 2003;Miyairi and Tojo 2007;Sekine et al 2007), and Maruyama et al (2000) and Ishiwata and Takemon (2005) have compiled fundamental information on the life cycle of a broad array of species. Nevertheless, the life cycles of some common species are still unknown.…”

Section: Introductionmentioning

confidence: 98%

Life cycles of 17 riffle-dwelling mayfly species (Baetidae, Heptageniidae, and Ephemerellidae) in central Japan

Tamura

Kagaya

2016

Limnology

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We described the life cycles of 17 riffle-dwelling mayfly species in a central Japanese stream. Both species of Baetidae (Alainites yoshinensis Gose and Baetis thermicus Uéno) and two of nine species of Heptageniidae (Ecdyonurus scalaris Kluge and Epeorus latifolium Uéno/l-nigrus Matsumura) in this stream were multivoltine (more than one generation per year). Seven other heptageniid species (two unidentified species of Cinygmula, Epeorus aesculus Imanishi, E. curvatulus Matsumura, E. ikanonis Takahashi, E. napaeus Imanishi, and Rhithrogena japonica Uéno) and all six species of Ephemerellidae [Cincticostella elongatula (McLachlan), C. nigra (Uéno), Drunella basalis (Imanishi), D. ishiyamana Matsumura, D. sachalinensis (Matsumura), and D. trispina (Uéno)] were essentially univoltine.

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“…Eaton 1888), these descriptions are often restricted to certain groups (e.g. Not all taxa are ideal for ecological investigations that include the egg stage, such as groups where taxon-specific egg identification requires imaging by electron microscope or where taxa broadcast their eggs, which makes quantitative sampling difficult (but see Watanabe & Ohkita 2000). Furthermore, the geographic coverage in these studies is uneven and descriptions of eggs for lotic insects in Australia remain relatively scarce (e.g.…”

Section: Introductionmentioning

confidence: 99%

Egg masses of some stream‐dwelling caddisflies (Trichoptera: Hydrobiosidae) from Victoria, Australia

Lancaster

Glaister

2018

Austral Entomology

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Eggs are a largely neglected life stage in most ecological studies of aquatic insects, despite the importance of oviposition behaviour and fecundity estimates for many research questions. Incorporating egg stages into ecological research requires that ecologists can identify and quantify eggs, but descriptions of eggs and egg masses are scarce for many groups and particularly for Australian taxa. This paper focusses on stream-dwelling caddisflies in the family Hydrobiosidae and provides species-level identifications, morphological descriptions and images of egg masses of some species that commonly occur in south-eastern Australia. All the species we identified laid plaque-shaped egg masses attached to the underside of river rocks that protrude above the water surface. These egg masses can be identified in the field with the naked eye or the aid of a low-magnification hand lens. Interspecific variations in egg mass morphology were primarily thickness and firmness of the spumaline layer, egg mass size and arrangement of eggs within the mass. We also provide some ecological information on clutch sizes and the physical characteristics of oviposition sites, and we discuss various ways in which these taxa could be exploited as model systems for ecological research.

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Life Cycle and Synchronization of Nymphal Development of the Mayfly Ephoron shigae in Japan (Ephemeroptera: Polymitarcyidae)

Cited by 19 publications

References 13 publications

The expression of wingless and Engrailed in developing embryos of the mayfly Ephoron leukon (Ephemeroptera: Polymitarcyidae)

The expression of wingless and Engrailed in developing embryos of the mayfly Ephoron leukon (Ephemeroptera: Polymitarcyidae)

Life cycles of 17 riffle-dwelling mayfly species (Baetidae, Heptageniidae, and Ephemerellidae) in central Japan

Egg masses of some stream‐dwelling caddisflies (Trichoptera: Hydrobiosidae) from Victoria, Australia

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