Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Larval development and ecology of Baetis liebenauae Keffermüller (Ephemeroptera : Baetidae) in a north Italian lowland spring |
| Abstract | The life cycle of Baetis liebenauae has been investigated in a lowland spring of Northern Italy that shows a relative stability of water temperature. Nine postlarvula morphological stages of the larva were identified and a «jump development» of the wingpads between stage pairs has been noted. B. liebenauae is here a typical polyvoltine species and three generations can be defined, with the late-summer/autumn generation being the main one. During this generation the species is often the dominant taxon of the benthic community and shows a high larval density. Marquet differences have been in comparison noted with the development of this species in Poland. This is probably due to the different thermal features of the two regions. A temporal shift of the main generations seems to allow the coexistence of B. liebenauae and other high density Baetidae species. In Southern Europe the species is typical of small lowland streams with slow flowing waters. Its larvae live on aquatic macrophytes and their presence on mineral substrata can be considered as occasional. |
| Source | Annales de limnologie 32 (4), pp. 221–228 |
| Keywords | EphemeropteraBaetis liebenauaelife cycleecologymorphological stages |
| Journal | Annales de limnologie |
| Editor | EDP sciences,, Les Ulis, Francia |
| Year | 1996 |
| Type | Articolo in rivista |
| Authors | Buffagni A; Gomba T |
| Text | 175711 1996 Ephemeroptera Baetis liebenauae life cycle ecology morphological stages Larval development and ecology of Baetis liebenauae Keffermuller Ephemeroptera Baetidae in a north Italian lowland spring Buffagni A; Gomba T CNR IRSA The life cycle of Baetis liebenauae has been investigated in a lowland spring of Northern Italy that shows a relative stability of water temperature. Nine postlarvula morphological stages of the larva were identified and a «jump development» of the wingpads between stage pairs has been noted. B. liebenauae is here a typical polyvoltine species and three generations can be defined, with the late summer/autumn generation being the main one. During this generation the species is often the dominant taxon of the benthic community and shows a high larval density. Marquet differences have been in comparison noted with the development of this species in Poland. This is probably due to the different thermal features of the two regions. A temporal shift of the main generations seems to allow the coexistence of B. liebenauae and other high density Baetidae species. In Southern Europe the species is typical of small lowland streams with slow flowing waters. Its larvae live on aquatic macrophytes and their presence on mineral substrata can be considered as occasional. 32 Larval development and ecology of Baetis liebenauae Keffermuller Ephemeroptera Baetidae in a north Italian lowland spring_Buffagni_1996 Bliebe_BuffagniGomba_96.pdf Articolo in rivista EDP sciences, 0003 4088 Annales de limnologie Annales de limnologie Ann. limnol. Annales de limnologie. International journal of limnology andreastefano.buffagni BUFFAGNI ANDREA STEFANO TA.P04.016.001 Caratteristiche ecologiche di comunita acquatiche in ambienti fluviali e lagunari TA.P04.032.001 Funzionalita degli ecosistemi acquatici dinamica dei nutrienti, idromorfologia e habitat fluviali |