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Graziella Mura - One of the best experts on this subject based on the ideXlab platform.
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Co-occurrence of free-swimming and quiescent nauplii in a spring hatching of two Chirocephalus diaphanus Prévost, 1803 (Anostraca) populations from mountain pasture pools
Crustaceana, 2007Co-Authors: Paola Zarattini, Graziella MuraAbstract:The Anostracan, Chirocephalus diaphanus Pr?vost, 1803 presents variation in the timing of hatching, since embryos can fall free of the shell and remain in a quiescent state in a small cocoon formed by the hatching membrane. The co-occurrence of free-swimming and quiescent nauplii in a spring hatching was investigated by comparing the cyst behaviour of two local populations colonizing a short- and a long-lived mountain pool. In each pool, a constant number of ovigerous females was collected at the beginning and end of their life cycle. Immediately after deposition, the cysts were removed, counted, and subsequently stored in the laboratory for hatching tests. There were significant differences between the two biotopes in the frequency of pre-hatched nauplii. This confirms the ecological importance of the state of suspended development referred to as quiescence, suggesting that it plays a fundamental role in microevolutionary processes in Anostraca.
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Nutritional evaluation of decapsulated cysts of five species of fairy shrimp (Branchiopoda, Anostraca) from Italy for use in larval fish rearing
Crustaceana, 2005Co-Authors: Giovanni Fancello, Graziella MuraAbstract:[The wild cysts of five fairy shrimp species (Branchiopoda, Anostraca) from Italy were tested for their fatty acid profiles, particularly essential fatty acids (EFA), in order to obtain information on inter-species differences. Statistical comparison of the results obtained revealed significant (mostly P < 0.001) differences among the species studied, and seem to point also in favour of their use in feeding of larval fishes. Le cisti selvatiche di cinque specie di anostraci italiani (Branchiopoda, Anostraca) di acqua dolce sono state analizzate dal punto di vista del profilo in acidi grassi, quelli essenziali (EFA) in particolare, allo scopo di valutarne l'idoneita come fonte di cibo alternativa per larve di pesci. I risultati indicano differenze significative (nella maggior parte dei casi analizzati P < 0.001) nel profilo delle specie considerate, alcune delle quali sembrano particolarmente interessanti., The wild cysts of five fairy shrimp species (Branchiopoda, Anostraca) from Italy were tested for their fatty acid profiles, particularly essential fatty acids (EFA), in order to obtain information on inter-species differences. Statistical comparison of the results obtained revealed significant (mostly P < 0.001) differences among the species studied, and seem to point also in favour of their use in feeding of larval fishes. Le cisti selvatiche di cinque specie di anostraci italiani (Branchiopoda, Anostraca) di acqua dolce sono state analizzate dal punto di vista del profilo in acidi grassi, quelli essenziali (EFA) in particolare, allo scopo di valutarne l'idoneita come fonte di cibo alternativa per larve di pesci. I risultati indicano differenze significative (nella maggior parte dei casi analizzati P < 0.001) nel profilo delle specie considerate, alcune delle quali sembrano particolarmente interessanti.]
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A CONTRIBUTION TO THE KNOWLEDGE OF THE Anostraca FAUNA OF TURKEY
Crustaceana, 2005Co-Authors: Mustafa Tanatmiş, Sulhi R. Özkütük, Graziella MuraAbstract:Our current knowledge on the Anostraca of Turkey is rather limited, due to a lack of both local specialists and field sampling campaigns. Based on the old data available, mainly published in Italian and German, as well as on the results of recent samplings, we have summarized the present situation in order to update the information available for this branchiopod order in the Turkish fauna. Our purpose is to stress the need for extensive exploration of the territory, and to underline the importance of a proper conservation policy for temporary habitats, which are often overlooked, and hence particularly endangered, both as a result of human negligence, and due the their inherent ephemeral nature. RIASSUNTO Attualmente le conoscenze sulla fauna ad anostraci d?lia Turchia sono alquanto scarse a causa sia della mancanza di specialisti locali, che di campagne di raccolta adeguate. Analizzando dati di letteratura piuttosto datati ma poco diffusi (prevalentemente in italiano ed in tedesco), nonch? informazioni relative a raccolte recenti, abbiamo sintetizzato la situazione e presentiamo in questa nota il quadro attuale delle conoscenze circa questo gruppo di Branchiopodi. Oltre ad evidenziare la n?cessita di indagini ad ampio raggio, desideriamo sottolineare la n?cessita di valutare lo status delle specie present? e l'importanza di una corretta pol?tica di conservazione degli ambienti temporanei, che proprio in quanto tali, sono i pi? minacciati dalle attivit? umane.
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Expanding the Known Distribution of Chirocephalus Kerkyrensis Pesta, 1936 (Branchiopoda, Anostraca) in Italy
Crustaceana, 2004Co-Authors: Genuario Belmonte, Graziella MuraAbstract:A recent Italian record of Chirocephalus kerkyrensis Pesta, 1936 expands the known distribution of the species in Italy and provides new information about its supposed home range. The discovery of C. kerkyrensis at 508 m a. s. l. raises questions about our previous knowledge of the species and illustrates the problem of inadequate information about Anostraca in Italy. Un recente ritrovamento di Chirocephalus kerkyrensis Pesta, 1936 alla quota di 508 m s. l. m. nel comprensorio del Parco Nazionale del Pollino, modifica le attuali conoscenze sulla distribuzione di questa specie in Italia, e fornisce nuove informazioni sul suo areale. Il nuovo reperto mette in discussione quanto ipotizzato su C. kerkyrensis , sino ad ora rinvenuto solo in acque astatiche di foresta planiziaria mediterranea, e dimostra una volta di piu quanto sia ancora frammentaria la conoscenza del territorio nazionale, per lo meno per quanto concerne i crostacei anostraci.
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Biometrical key-characters for species separation during ontogenesis in fairy shrimps (Crustacea, Anostraca)
Hydrobiologia, 2004Co-Authors: Paola Zarattini, Graziella MuraAbstract:Species identification at the larval stage in Anostraca is a major problem, particularly in field studies when two or more species are co-occuring. Investigation into the possibility of telling larval species apart was performed by means of a biometrical study on wild larvae and juveniles of six fairy shrimp species of the genera Chirocephalus, Branchipus and Tanymastix. A total of ten characters and their relationships with body length were analysed within each of the six developmental stages considered. Most of the variables differed significantly (P
Alain Thiéry - One of the best experts on this subject based on the ideXlab platform.
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Branchipodopsis Buettikeri, New Species (Anostraca, Branchipodidae), the First Arabian (Sultanate of Oman) Representative of the Genus of Freshwater Fairy Shrimps, with Biogeographical Remarks
Journal of Crustacean Biology, 2004Co-Authors: Alain Thiéry, Séverine JeanAbstract:Abstract Branchipodopsis buettikeri, a new fairy shrimp species (Anostraca, Branchipodidae) collected from shallow desert temporary ponds in the Sultanate of Oman, is described. It is the first species of the genus Branchipodopsis found in the Arabian Peninsula. The new species is mainly distinguished from other species of the genus by the shape of the second antennae of the male, and by the shape of the clypeus outgrowths. Biogeographical implications are discussed.
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multispecies coexistence of branchiopods Anostraca notostraca spinicaudata in temporary ponds of chaouia plain western morocco sympatry or syntopy between usually allopatric species
Hydrobiologia, 1991Co-Authors: Alain ThiéryAbstract:The study of the structure of communities of Crustacean branchiopods Anostraca, Notostraca and Spinicaudata of temporary ponds in Morocco revealed the existence of a geographical area with a particularly diversified number of species. Over a few hectares, 11 species, among the 18 known in Morocco, are present. While most of them are usually allopatric and belong to distinct associations, indicative of particular ecological and climatic conditions, they can coexist in Chaouia plain, either in adjoining ponds (sympatric species) or in the same pond (syntopic species). In one pond we could find up to 10 phyllopods: 6 Anostraca, 2 Notostraca and 2 Spinicaudata.
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Multispecies coexistence of branchiopods (Anostraca, Notostraca & Spinicaudata) in temporary ponds of Chaouia plain (western Morocco): sympatry or syntopy between usually allopatric species
Hydrobiologia, 1991Co-Authors: Alain ThiéryAbstract:The study of the structure of communities of Crustacean branchiopods Anostraca, Notostraca and Spinicaudata of temporary ponds in Morocco revealed the existence of a geographical area with a particularly diversified number of species. Over a few hectares, 11 species, among the 18 known in Morocco, are present. While most of them are usually allopatric and belong to distinct associations, indicative of particular ecological and climatic conditions, they can coexist in Chaouia plain, either in adjoining ponds (sympatric species) or in the same pond (syntopic species). In one pond we could find up to 10 phyllopods: 6 Anostraca, 2 Notostraca and 2 Spinicaudata. This faunistic diversity may result from abiotic features (the location of the ponds at the boundary of two climatic areas) and from a heterogeneous geological substratum, creating a patchwork of temporary ponds with various mesologic conditions. Secondarily, this diversity may result from different life history characteristics of each coexisting species. As all species hatch synchronically, coexistence is only possible if their growth rates and life span are different. This implies that horizontal and vertical distribution, and exploitation of food supplies in the habitat differ for each ecophase of the syntopic species (spatial and trophic exclusion).
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Multispecies coexistence of branchiopods (Anostraca, Notostraca & Spinicaudata) in temporary ponds of Chaouia plain (western Morocco): sympatry or syntopy between usually allopatric species
Studies on Large Branchiopod Biology and Aquaculture, 1991Co-Authors: Alain ThiéryAbstract:The study of the structure of communities of Crustacean branchiopods Anostraca, Notostraca and Spinicaudata of temporary ponds in Morocco revealed the existence of a geographical area with a particularly diversified number of species. Over a few hectares, 11 species, among the 18 known in Morocco, are present. While most of them are usually allopatric and belong to distinct associations, indicative of particular ecological and climatic conditions, they can coexist in Chaouia plain, either in adjoining ponds (sympatric species) or in the same pond (syntopic species). In one pond we could find up to 10 phyllopods: 6 Anostraca, 2 Notostraca and 2 Spinicaudata.
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Resting eggs of Anostraca, Notostraca and Spinicaudata (Crustacea, Branchiopoda) occurring in France: identification and taxonomical value
Studies on Large Branchiopod Biology and Aquaculture, 1991Co-Authors: Alain Thiéry, Charles GascAbstract:The external egg morphology of the phyllopod species recorded in France is described by means of S.E.M. Differences in diameter and ornamentation of envelope are stressed. We propose a dichotomous key to allow the identification of species even when their biotope is dry. Results are compared with previous studies on Anostraca, Notostraca and Spinicaudata and their taxonomical value is discussed.
Henri J Dumont - One of the best experts on this subject based on the ideXlab platform.
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Diversity and zoogeography of the fairy shrimps (Branchiopoda: Anostraca) on the Indian subcontinent
Hydrobiologia, 2017Co-Authors: Sameer M. Padhye, Mihir R. Kulkarni, Henri J DumontAbstract:The Indian subcontinent has a specific biogeographical history, but has remained understudied with respect to invertebrates like the Anostraca. In this study, we discuss the Anostracan diversity and zoogeography on the subcontinent. We collected all pertinent literature and considered nineteen bioclimatic variables along with altitude and its terrestrial ecoregions. The study area was overlaid with 10,000 km2 grids, and five hundred random GIS data points per grid were extracted for analysis besides the species locality data. Species richness estimators predict at least 3–4 more species to the existing list of 19 species. The beta diversity measure βsim reveals two zoogeographic “zones,” viz., a Northern (NZ) zone and the rest of the subcontinent (RS) comprising the Central (CZ) and South (SZ) zones by Unweighted Pair-Group Method using arithmetic averages clustering and Analysis of Similarity. Complementarity index shows that no fauna is shared between NZ and RS, while CZ and SZ share 50% of the species. Principal Component analysis shows that NZ and RS differ somewhat from one another climatically. NZ and RS have different ecoregions with montane and temperate grasslands commonly observed in NZ while the latter comprising tropical forests, implying differences in soil geochemistry which is crucial for Anostracan distribution.
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Anostraca (Crustacea: Branchiopoda) from Socotra Island: A new Branchipodopsis and its relationship with its African and Aian congeners
2004Co-Authors: Kay Van Damme, Henri J Dumont, Petrus WeekersAbstract:fhe freshwater Anostraca oI:Socotra Island (Yemen) have been investigated. In addition to the occurrence of Streptocephalus sp., Branchipodopsis relictus n. sp. is described and illustrated. Morphologically, it is reiated to the Asian Branchipodopsis ffinis Sars, 1901 and the African Branchipodopsis wolf Daday, 1910, but analysis of the SSU rDNA (185, 5.8S, ITS 1, ITS 2) reveals substantial differences in the internal transcribed spacer regions of these species.
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The large branchiopods (Anostraca, Notostraca and Spinicaudata) of Numidia (Algeria)
Hydrobiologia, 2002Co-Authors: Boudjema Samraoui, Henri J DumontAbstract:Between 1995 and 1999, we surveyed the large branchiopods (Crustacea, Branchiopoda) of Numidia, the coastal plain of northeastern Algeria. Samples from ca 100 sites yielded two species of Anostraca ( Chirocephalus diaphanus , new to Numidia, and Tanymastix stagnalis ), one notostracan ( Lepidurus apus lubbocki ) and one spinicaudatan ( Cyzicus tetracerus ). The absence of Streptocephalus torvicornis bucheti is noteworthy. An annotated check-list of all large branchiopods known from Algeria is also presented and discussed. Several species appear to be in danger of extinction.
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The potential of freshwater Anostraca for technical applications
Hydrobiologia, 1997Co-Authors: Henri J Dumont, Natesan MunuswamyAbstract:Freshwater Anostraca offer a potential for a variety of technical applications. These include production in aquaculture facilities or harvesting from natural reserves of cysts or biomass. However, economical realism limits the number of viable options to either subsidized, or to well-focussed activities aimed at end-products with a high added value.
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Streptocephalus caljoni n.sp. (Crustacea: Anostraca) from Burundi and analysis of its limb structure
Hydrobiologia, 1996Co-Authors: Lynda Beladjal, Johan Mertens, Henri J DumontAbstract:Streptocephalus caljoni n. sp. from Burundi is described. It is related to Streptocephalus trifidus, but differs from it and other Streptocephalus in the cheliform hand of the male antenna II. We also analyse the morphology of the setae on the endo- and exopodite of the fifth trunk limb, using light- and scanning electron microscopy. This analysis reveals additional differences between the two related species, and is a useful tool in the study of the taxonomy of the Anostraca.
D. Christopher Rogers - One of the best experts on this subject based on the ideXlab platform.
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The complete mitogenome of the fairy shrimp Streptocephalus cafer (Lovén, 1847)(Crustacea: Branchiopoda: Anostraca) from an ephemeral pond in Botswana, southern Africa.
Mitochondrial DNA. Part B Resources, 2020Co-Authors: Murphy Tladi, D. Christopher Rogers, Tatenda Dalu, Casper Nyamukondiwa, Shilpa Pradeep Parbhu, Peter R. Teske, Arsalan Emami-khoyi, Ryan J. WassermanAbstract:Fairy shrimps (Anostraca) constitute an important component of seasonally aquatic habitats, but few complete mitochondrial genomes have been published for this group. Here, we report the mitogenome...
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Type species designation for Archaebranchinecta Rogers amp; Coronel (Branchiopoda: Anostraca).
Zootaxa, 2019Co-Authors: D. Christopher RogersAbstract:Over the course of my career I have described nine Branchiopod genera and one subgenus, either alone or with other researchers. From these, four genera and the subgenus belong to Anostraca. But I was remiss in designating type species for one of those taxa which caused the name to become unavailable. This short communication is to rectify this unfortunate error on my part.
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Branchinecta uruguayensis Rogers & Racz Lorenz, 2015 is a junior synonym of B. achalensis César, 1985 (Branchiopoda: Anostraca: Branchinectidae)
Zootaxa, 2018Co-Authors: Rosa Graciela Cohen, D. Christopher RogersAbstract:As part of preparation for identification keys to the branchiopod crustaceans of the Neotropical Region, we re-examined many species of Anostraca that appeared to be closely related. Our examination caused us to re-evaluate the status and relationship of two branchinectid species.
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New challenges in Anostracan research: old issues, new perspectives and hot topics
Hydrobiologia, 2017Co-Authors: Federico Marrone, D. Christopher Rogers, Paola Zarattini, Luigi Naselli-floresAbstract:We present a summary of responses to our call among scientists working on Anostraca to commemorate the late Professor Graziella Mura, a pioneer of modern studies on this group of animals. Colleagues from all over the world promptly answered and contributed their works among which we selected the fourteen papers published in the Hydrobiologia Special Volume “New Challenges in Anostracan research: a tribute to Graziella Mura”. Although Anostraca are widespread globally, they are among the least known taxonomic groups. Although some biogeographical data are available for some species and higher taxa, we are still far from a clear understanding of the phylogeny, ecology and biogeography of the order. The papers collected in this Special Volume are therefore intended to represent a step ahead to solve phylogenetic and ecological issues relative to this charming group of crustaceans.
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Fairy Shrimp (Branchiopoda: Anostraca) of Chile
Journal of Crustacean Biology, 2008Co-Authors: D. Christopher Rogers, Patricio De Los Ríos, Oscar ZúñigaAbstract:Abstract Portions of Chile were surveyed for Anostraca. Including the two species of Artemia previously reported from Chile, we found 5 new localities and range extensions for 5 species of Branchinecta. Previous studies on Chilean Anostraca have focused on Artemia, and although Branchinecta was previously reported in Antarctica close to Chilean Air Force installations, and in a few temporal ponds in Southern Patagonia, the species were never determined. Brief habitat descriptions, as well as conservation status, and identification keys are presented and discussed. Additionally, we describe a new species from the Atacama Desert, Branchinecta papillata n. sp.
L. Brendonck - One of the best experts on this subject based on the ideXlab platform.
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Distribution, diversity and conservation of Anostraca (Crustacea: Branchiopoda) in southern Africa
Hydrobiologia, 1997Co-Authors: M.l. Hamer, L. BrendonckAbstract:Southern Africa is defined here as Africa south of the Zambezi and Kunene Rivers. Here, annual average rainfall, rainfall season, and effective temperature are climatic factors which influence Anostracan distribution. The type of temporary pool also appears to have some effect on distribution. Areas of high species richness are not confined to any particular climatic region and such areas occur in arid, montane and subtropical regions of southern Africa. Forty-six Anostracan species have been recorded from the subcontinent and 80% of these are endemic. IUCN Red Data assessment of species revealed that two species can be considered 'Critically Endangered', while a further four are 'Endangered', and three are 'Vulnerable'. Many parts of southern Africa have been inadequately sampled but in South Africa, where the Anostracans are relatively well known, temporary pool inhabitants are threatened mainly by agriculture, urbanization, pollution and pesticides.