The life cycles of Boyeria irene and Onychogomphus uncatus (Odonata: Aeshnidae, Gomphidae) in western Spain : A biometric study

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The life cycles of Boyeria irene and Onychogomphus uncatus (Odonata: Aeshnidae, Gomphidae) in western Spain : A biometric study

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Publication Article, peer reviewed scientific
Title The life cycles of Boyeria irene and Onychogomphus uncatus (Odonata: Aeshnidae, Gomphidae) in western Spain : A biometric study
Author Velasco-Villanueva, Tatiana ; Campos, Francisco ; Norling, Ulf ; Ferreras-Romero, Manuel
Date 2018
English abstract
Co-occurrence of species with similar trophic requirements, such as odonates, seems to depend both on them occupying different microhabitats and differing in their life-cycles. The life cycles of the dragonflies Boyeria irene and Onychogomphus uncatus were studied in two consecutive years, mainly by systematic sampling of larvae in seven permanent head courses that constitute the upper basin of the River Agueda, western Spain, in the central part of the ranges of these two species. The size ranges of the last five larval stadia of both species were established based on biometric data. The eggs of the egg-overwintering aeshnid hatched in late spring and early summer and for the gomphid hatching peaked in middle-late summer. Both species showed mixed voltinism with "cohort splitting". B. irene had a dominant three-year development (partivoltinism), with some developing in two years (semivoltinism). O. uncatus requires four, sometimes three years to complete development (all partivoltine). B. irene larvae spent the winter before emergence in the last three, maybe four stadia, as a "summer species". O. uncatus mainly behaved as a "spring species", most larvae spending the last winter in the final larval stadium.
DOI https://doi.org/10.14411/eje.2018.067 (link to publisher's fulltext.)
Link http://www.eje.cz/artkey/eje-201801-0067_the_life_cycles_of_boyeria_irene_and_onychogomphus_uncatus_odonata_aeshnidae_gomphidae_in_western_spain_a.php .Icon
Publisher Akademie Ved Ceske Republiky
Host/Issue European Journal of Entomology;
Volume 115
ISSN 1802-8829
Language eng (iso)
Subject Odonata
Aeshnidae
Gomphidae
dragonfly
Boyeria irene
Onychogomphus uncatus
life cycle
permanent streams
larval sizes
seasonal regulation
voltinism
Spain
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/29530 Permalink to this page
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