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Artemia sp. : MALE-(A) tête, vue frontale, (B) et (C) différents aspects des hémipénis ; FEMELLE-(D) sac ovigère, vue ventrale, (E) idem, vue latérale gauche, (F) idem, vue latérale droite, (G) antenne et antennule ; (H)-variabilité de la morpho¬ logie de la furca en relation avec la salinité de l'habitat (de gauche à droite, salinité croissante de 7° à 25° Baumé, d'après Schmankewitsch, 1875).-Illustrations A, B, D, E, H. modifiées d'après Flossner, 1972, C, F, d'après Botnariuc et Orghidan, 1953. Bulletin mensuel de la Société Linnéenne de Lyon, tome 57, fascicule 4, avril 1988 (ISSN 0366-1326)
Contexts in source publication
Context 1
... bouclier céphalothoracique est ovale ; l'échancrure postérieure du bouclier est plutôt rectangulaire, sa marge est garnie de 35 à 50 dents. La carène dorsale est prolongée par un court aiguillon (Fig. 16 ...
Context 2
... existe 35 à 48 paires de pattes thoraciques. La première paire a des endites flagelliformes qui dépassent les bords du bouclier dorsal (Fig. 16 C). La 11e paire de pattes thoraciques est modifiée en poche ...
Context 3
... telson est prolongé par une lame infra-anale dont les bords sont denticulés ( Fig. 16 B) ; la ligne médio-dorsale est garnie d'un nombre variable d'épines (20 à 100). La furca est plus courte que le reste du ...
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... 22 species in Morocco (Thiéry, 1986;Amat et al., 2005;Boix et al., 2016;Korn & Hundsdoerfer, 2016), and 25 in Italy (Cottarelli & Mura, 1983;Mura, 1999;Marrone & Mura, 2006;Mura et al., 2006;Scanabissi et al., 2006; Alfonso, 2017)) and slightly higher than others [e.g. 19 species both in Tunisia (Ben Naceur et al., 2013;Marrone et al., 2016) and Algeria (Samraoui & Dumont, 2002;Samraoui et al., 2006;Ghomari et al., 2011), and 18 species in France (Nourisson & Thiéry, 1988;Defaye et al., 1998;Amat et al., 2005;Rabet et al., 2005)]. The taxa with high occurrences were species common in the western Palaearctic (C. ...
The deficiency in the distributional data of invertebrate taxa is one of the major impediments acting on the bias towards the low awareness of its conservation status. The present study sets a basic framework to understand the large branchiopods distribution in the Iberian Peninsula and Balearic Islands. Since the extensive surveys performed in the late 1980s, no more studies existed updating the information for the whole studied area. The present study fills the gap, gathering together all available information on large branchiopods distribution since 1995, and analysing the effect of human population density and several landscape characteristics on their distribution, taking into consideration different spatial scales (100 m, 1 km and 10 km). In overall, 28 large branchiopod taxa (17 anostracans, 7 notostracans and 4 spinicaudatans) are known to occur in the area. Approximately 30% of the sites hosted multiple species, with a maximum of 6 species. Significant positive co-occurring species pairs were found clustered together, forming 4 different associations of large branchiopod species. In general, species clustered in the same group showed similar responses to analysed landscape characteristics, usually showing a better fit at higher spatial scales.
Several human activities, such as actions for nature conservation, research and recreational activities, are closely associated with inland aquatic habitats that are usually considered as isolated island habitats. In this study, the possibility of unintentional dispersal of aquatic invertebrates among water bodies via footwear and motor vehicles was investigated.
Mud samples collected from boots and from the tyres and wheel cases of cars used for field work by biologists (Camargue, Southern France) were hatched under laboratory conditions and also checked for the presence of unhatched propagules. A large number of organisms hatched and invertebrate propagules from a wide range of taxa were encountered (including Artemia , freshwater large branchiopods, Cladocera, Ostracoda, Rotifera, Turbellaria, Nematoda, etc.). The results also demonstrated that different research groups tend to transport the aquatic invertebrates typical for their respective study systems.
Human dispersal of aquatic invertebrates has been studied mainly on large continental scales, such as in the case of transoceanic transport via ballast water in ships. This study provides evidence that dispersal via footwear and motor vehicles may result in frequent dispersal of aquatic invertebrates on a local scale, and we presume also occasionally over longer distances. Given the rapid spread of invasive zooplankton species (e.g. Artemia franciscana encountered in this study), we promote caution and recommend cleaning before transport of any equipment which comes in contact with water or aquatic sediment. Copyright © 2010 John Wiley & Sons, Ltd.
1. To monitor the diversity and distribution patterns of large branchiopods and the effects of local and regional processes, 30 temporary wetlands in a nature reserve in the Camargue (southern France) were sampled and characterised during three consecutive inundations (2005–08). Additional species were added to the list for each wetland by hatching animals from the resting egg bank, after determining the optimal hatching conditions.
2. A total of five species were found, representing 28% of the species known in France and 56% of the known Camargue species. Tanymastix stagnalis, Branchipus schaefferi, Chirocephalus diaphanus (Anostraca), Triops cancriformis (Notostraca) and Imnadia yeyetta (Spinicaudata) were distributed over a total of 19 wetlands.
3. More than one species was present in 79% of the wetlands containing large branchiopods. Individual wetlands harboured on average 2.8 species, with a maximum of five coexisting species. Large branchiopod assemblages were temporally variable, differing among the three inundations with different climatological conditions.
4. The most important habitat factor influencing the distribution of large branchiopods was salinity, adversely affecting the density and survival of hatchlings. The persistence of large branchiopods in these temporary waters may be threatened by increasing salinisation driven by intensive water management and climate change.
The genusTanymastix Simon, 1886 is represented in Macedonia by two species:Tanymastix stagnalis (Linnaeus, 1758) andTanymastix motasi Orghidan, 1945. The fairy shrimpT. stagnalis has been found exclusively in the rock pools containing only several litres of water, above the village of Stracin, N. E. Macedonia.T. motasi is present only in the shallow rainpools, less than 15 cm in depth, scattered over an area of untilled, highly-mineralized pasture land in the Pelagonia Plain, S. W. Macedonia. BothTanymastix species are the only anostracans in their biotopes.
In Stracin, all the neighbouring rain pools in soil substrat are occupied byChirocephalus diaphanus carinatus (Daday, 1910). In Pelagonia, the deeper water bodies are generally inhabited byChirocephalus pelagonicus Petkovski, 1986 andChirocephalus diaphanus carinatus (Daday, 1910).
On the basis of abundant material of both species, a detailed study of essential morphological characters has been carried out and comparisions with data given in the literature have been made. InT. stagnalis, aberrant morphological features were not ascertained. InT. motasi, the originaldescription of the species, hitherto known only for the Giurgiu Region in Rumania, is supplemented by additional diagnostic characteristics.
