Egg hatching phenology and success of Lestes macrostigma in two temporary brackish ponds

Autor:	Robby Stoks, Samuel Hilaire, Philippe Lambret
Rok vydání:	2017
Předmět:	0106 biological sciences Early embryonic stage Brackish water Phenology Ecology Hatching Diapause Biology biology.organism_classification Odonata 010603 evolutionary biology 01 natural sciences 010602 entomology Damselfly Insect Science Threatened species Ecology Evolution Behavior and Systematics
Zdroj:	International Journal of Odonatology. 20:1-12
ISSN:	2159-6719 1388-7890
DOI:	10.1080/13887890.2016.1269690
Popis:	Although a full life cycle approach is optimally needed to make conservation decisions, the egg stage is often neglected for insect species of special conservation interest. Water management and related abiotic factors are relevant factors to consider in aquatic species. Lestes macrostigma is a threatened damselfly restricted to temporary brackish waters. Here we provide detailed information on its hatching success and phenology in two natural field populations. Shoots containing fresh egg clutches of L. macrostigma were sampled in late June, just after the oviposition period. In the fall, shoots were separately placed in plastic boxes in two ponds in southern France. Examination of eggs indicated L. macrostigma overwinters at an early embryonic stage. The following spring we monitored hatching in detail. Hatching began on 15 March in both ponds and ended on 27 April. Hatching was synchronized, with half of the eggs hatching within five days in the first pond and 14 days in the second pond. Lower water te...
Databáze:	OpenAIRE
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