Le développement des éphéméroptères d'un ruisseau à truites des Pyrénées-Atlantiques, le lissuraga

Thibault, Max; Valdes, Henriette; Bosviel, A.; Vignes, Jean Claude

doi:10.1051/limn/1971011

Cited by 42 publications

(40 citation statements)

References 3 publications

(9 reference statements)

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“…According to many previous studies on mayflies (i. e. Thibault 1971, Elliott et al 1988, B. Uebenauae larvae getting fully developed during the first and the last months of the year grow to larger dimensions in the Italian spring under study, than those of the late-summer/autumn period. Notwithstanding many abiotic factors that can affect the size of the final instar of Baetis larvae (i.e.…”

Section: Life Cyclementioning

confidence: 81%

“…Fur- (8) thermore, temporal shifts of emergence of high density coexisting mayfly species have been reported from many authors (i.e. Thibault 1971, Brittain 1982, Elliott & Humpesch 1983). Leading to avoidance of direct competition, a relative temporal shifting of main generations or production peaks seems then to allow the coexistence of these high-density Baetidae species.…”

Section: Ecologymentioning

confidence: 87%

“…liebenauae is, in the studied sites, a typical polyvoltine species. This is not surprising, as many other Baetis species often show two or more generations a year (Landa 1968, Thibault 1971, Sowa 1975, Elliott et al 1988). Other numerically important Baetidae spe cies simultaneously present -B. rhodani and A. muti cus -show the same general life cycle pattern but wi th the winter generation as the main one and with the highest larval densities between December and April.…”

Section: Ecologymentioning

confidence: 94%

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Larval development and ecology ofBaetis liebenauaeKeffermüller (Ephemeroptera : Baetidae) in a north Italian lowland spring

Buffagni¹,

Gomba

1996

Ann. Limnol. - Int. J. Lim.

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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. Le cycle biologique de Baetis liebenauae a été étudié dans l'émissaire d'une source de plaine de l'Italie du Nord qui montre une relative stabilité de la température de l'eau. Neuf stades morphologiques postlarvules de la larve ont été identifiés par le dé-veloppement des fourreaux alaires. Baetis liebenauae est ici une espèce typiquement polyvoltine. Trois générations peuvent se succéder dont celle de fin d'été/automne qui est la plus importante. Pendant cette génération, l'espèce représente souvent le taxon dominant dans la communauté benthique, et montre une densité larvaire élevée. Une différence marquée comparativement au dé-veloppement de l'espèce en Pologne a été mise en évidence, probablement induite par le régime thermique différent dans les deux régions. La coexistence de B. liebenauae avec d'autres Baetidae à haute densité semble être permise par une ségrégation temporelle des principales générations. En Europe du Sud, l'espèce est typique des petites rivières à courant lent de basse altitude. Les larves de B. liebenauae vivent sur les macrophytes aquatiques et leur présence sur substrat minéral peut être considérée comme occasionnelle. Développement larvaire et écologie de

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Section: Life Cyclementioning

confidence: 81%

Section: Ecologymentioning

confidence: 87%

Section: Ecologymentioning

confidence: 94%

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Larval development and ecology ofBaetis liebenauaeKeffermüller (Ephemeroptera : Baetidae) in a north Italian lowland spring

Buffagni¹,

Gomba

1996

Ann. Limnol. - Int. J. Lim.

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“…Such a life cycle was observed in the River Samson for Ephemerella major (Rosillon, 1986) and it was thought to be likely for the other 10 species from data on phenology and occurrence of pupal and early stages (Rosillon, 1984(Rosillon, , 1985b and from other studies of their life histories in European temperate rivers (Pleskot, 1961;Thorup, 1963;Elliott, 1968Elliott, ,1982Thibault, 1971;Otto, 1976;Streit, 1976;Dessaix & Roux, 1980;Goedmakers, 198 1).…”

Section: Mortalitymentioning

confidence: 87%

The influence of abiotic factors and density-dependent mechanisms on between-year variations in a stream invertebrate community

Rosillon

1989

Hydrobiologia

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Samples of invertebrates were taken in two seasons (October and April) over 5 years in a trout stream in Belgium. Diversity, total benthic invertebrate density, and densities of 27 of 34 taxa tested showed significant differences between years. Significant seasonal effects and interactions were observed in 18 and 7 taxa respectively. The most common pattern of between-year variation was related to hydrological events (flooding) which caused low densities for many species. Most species recovered rapidly, but the recovery of some predators seemed to show a delay of one year. The amphipod Gammarus fossarum appeared to respond positively to flooding as well as to certain post-flood conditions. A significant positive correlation between mortality and the logarithm of initial density was obtained for 6 of 11 species tested. The relationships between mortality and abiotic factors such as water temperature, mean and maximum water level, were very poor. A hierarchy of environmental factors in the regulation of stream macroinvertebrate populations is suggested with: (1) exceptional abiotic events acting in a densityindependent manner; and (2) biotic factors that may account for density-dependent regulation.

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“…In the Tifferguine, E. sylvicola is a «winter» univoltine species, which grows mainly during autumn and spring as it does in several mountain streams in Sierra Nevada (Spain) (Alba-Tercedor 1990) and in Central Europe (Landa 1968). Univoltinism seems to be a characteristic of Epeorus species (Alba-Tercedor 1990, Landa 1968, Flowers & Hilsenhoff 1978, Lehmkuhl 1968, Minshall 1967 even though E. torrentis can be partly bivoltine (Thibault 1971). In the Tifferguine, the mortality of E. sylvicola larvae was constant during the larval life though growth clearly decreased during winter.…”

Section: Discussionmentioning

confidence: 99%

Influence of temperature and macrophytes development on the larval population dynamics ofEpeorus sylvicolaPict (Ephemeroptera) in a torrential river of the «Haut-Atlas de Marrakech» (Morocco)

Ouahsine

Céréghino

Lavandier

1996

Ann. Limnol. - Int. J. Lim.

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Two successive generations of Epeorus sylvicola were studied in the Tifferguine, a torrential river in Morocco (2600 m altitude, water temperature 0-22° C, snow-cover : 1-2 months/year).The life cycle took one year and larval growth depended on temperature. Larvae fed on periphyton and lived mainly on stony substrates. In spring, macrophytes overgrew the bottom river and markedly reduced the amount of non-vegetated area ; combined with maximum and potentially lethal temperatures E. sylvicola larvae disappeared in May. Consequently, annual production depended on the development stage reached by the cohort when such unfavourable conditions occurred. Le cycle biologique dure un an. La vitesse de croissance dépend de la température. Les larves se nourrissent de périphyton et occupent principalement les substrats pierreux. Au printemps, les végétaux qui envahissent le lit et réduisent la surface d'habitat de l'espèce provoquent (associés à des températures maximum devenant léthales ?) la disparition des larves en mai. Ainsi chaque année, la production dépend du degré de développement atteint par la cohorte quand surviennent ces conditions défavorables. Influence de la température et du développement des macrophytes sur la dynamique des populations larvaires de

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Le développement des éphéméroptères d'un ruisseau à truites des Pyrénées-Atlantiques, le lissuraga

Cited by 42 publications

References 3 publications

Larval development and ecology ofBaetis liebenauaeKeffermüller (Ephemeroptera : Baetidae) in a north Italian lowland spring

Larval development and ecology ofBaetis liebenauaeKeffermüller (Ephemeroptera : Baetidae) in a north Italian lowland spring

The influence of abiotic factors and density-dependent mechanisms on between-year variations in a stream invertebrate community

Influence of temperature and macrophytes development on the larval population dynamics ofEpeorus sylvicolaPict (Ephemeroptera) in a torrential river of the «Haut-Atlas de Marrakech» (Morocco)

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