36 research outputs found
Le récolement des collections entomologiques
Face Ă des collections dâinsectes constituĂ©es de dizaines ou de centaines de spĂ©cimens, lâauteur sâinterroge sur la maniĂšre de compter ces grands nombres, met en lumiĂšre les difficultĂ©s rencontrĂ©es et fournit quelques pistes qui allient harmonisation, rigueur et rĂ©alisme des tĂąches Ă accomplir
Effects of Landscape Structure on Movement Patterns of the Flightless Bush Cricket Pholidoptera griseoaptera
Because the viability of a population may depend on whether individuals can disperse, it is important for conservation planning to understand how landscape structure affects movement behavior. Some species occur in a wide range of landscapes differing greatly in structure, and the question arises of whether these species are particularly versatile in their dispersal or whether they are composed of genetically distinct populations adapted to contrasting landscapes. We performed a capture-mark-resight experiment to study movement patterns of the flightless bush cricket Pholidoptera griseoaptera (De Geer 1773) in two contrasting agricultural landscapes in France and Switzerland. The mean daily movement of P. griseoaptera was significantly higher in the landscape with patchily distributed habitat (Switzerland) than in the landscape with greater habitat connectivity (France). Net displacement rate did not differ between the two landscapes, which we attributed to the presence of more linear elements in the connected landscape, resulting in a more directed pattern of movement by P. griseoaptera. Significant differences in the movement patterns between landscapes with contrasting structure suggest important effects of landscape structure on movement and dispersal success. The possibility of varying dispersal ability within the same species needs to be studied in more detail because this may provide important information for sustainable landscape planning aimed at maintaining viable metapopulations, especially in formerly well-connected landscape
Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences
The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & NemĂ©sio 2007; Donegan 2008, 2009; NemĂ©sio 2009aâb; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported
by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on
18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based
researchers who signed it in the short time span from 20 September to 6 October 2016
Confirmation de la présence en France de Lamproplax picea (Flor, 1860) (Hem., Lygaeidae)
Dusoulier François, Matocq Armand. Confirmation de la présence en France de Lamproplax picea (Flor, 1860) (Hem., Lygaeidae). In: Bulletin de la Société entomologique de France, volume 111 (4), décembre 2006. p. 488
Confirmation de la présence en France de Lamproplax picea (Flor, 1860) (Hem., Lygaeidae)
Dusoulier François, Matocq Armand. Confirmation de la présence en France de Lamproplax picea (Flor, 1860) (Hem., Lygaeidae). In: Bulletin de la Société entomologique de France, volume 111 (4), décembre 2006. p. 488
Ăvolution des habitats et changement climatique : quelles consĂ©quences pour les populations de LĂ©zard ocellĂ©, Lacerta lepida (Saurien, LacertidĂ©s), en limite nord de rĂ©partition ?
The French Mediterranean region provides an ideal situation to study distribution changes that may be related to climate change. At the northern limits of the Mediterranean region one would predict a northward migration of thermophilous species adapted to the Mediterranean climate. This prediction was tested on the Ocellated Lizard, Lacerta lepida, a species typical of open habitats in the western Mediterranean. The habitats of 10 populations situated near the northern limit of the speciesâ distribution were studied using aerial photography. During the last 50 years an important loss of open habitats was noted as a result of woodland encroachment and loss of habitat to cultivation. This has led to the fragmentation and isolation of populations which may be the cause of their rapid decline. Our study shows that the evolution of the landscape due to the abandonment of extensive grazing (with subsequent tree re-colonisation or farming of formerly grazed parcels) plays a major role in the spatial dynamics of certain mediterranean animal species. In the case of the Ocellated Lizard the evolution of the landscape has caused a regression of populations at the northern limit of the species' distribution, hence the prediction extension due to climate change is not observed.Lâaire mĂ©diterranĂ©enne française offre de bonnes conditions pour Ă©tudier les fluctuations dâaire de distribution sous lâeffet du rĂ©chauffement climatique. Dans cette rĂ©gion, on doit en effet sâattendre Ă une remontĂ©e latitudinale des espĂšces thermophiles qui y sont infĂ©odĂ©es. Cette hypothĂšse est Ă©valuĂ©e sur le LĂ©zard ocellĂ©,
Lacerta lepida, une espĂšce typique des milieux ouverts ouest-mĂ©diterranĂ©ens. Dix populations situĂ©es en limite nord de la distribution mondiale de lâespĂšce ont fait lâobjet dâune analyse paysagĂšre Ă partir de photos aĂ©riennes. Au cours des cinquante derniĂšres annĂ©es, on constate une perte importante des habitats ouverts au profit des boisements et des cultures. Ce processus sâaccompagne dâun morcellement et dâun isolement accru des populations qui se traduit par un dĂ©clin rapide des populations de LĂ©zards ocellĂ©s. LâĂ©tude montre que lâĂ©volution des paysages engendrĂ©e par la dĂ©prise rurale (reforestation ou mise en culture de zones anciennement pĂąturĂ©es) joue un rĂŽle dominant dans la dynamique spatiale de certaines espĂšces animales mĂ©diterranĂ©ennes. Dans le cas du LĂ©zard ocellĂ©, lâĂ©volution des habitats apparaĂźt prĂ©pondĂ©rante sur les effets du rĂ©chauffement climatique, dâoĂč sa rĂ©gression aux limites nord de sa distribution.Grillet Pierre Antoine, Cheylan Marc, Dusoulier François. Ăvolution des habitats et changement climatique : quelles consĂ©quences pour les populations de LĂ©zard ocellĂ©, Lacerta lepida (Saurien, LacertidĂ©s), en limite nord de rĂ©partition ?. In: Ecologia mediterranea, tome 32,2006. pp. 63-72
Antaxius spinibrachius (Fischer, 1853), nouvelle espĂšce pour la France (Orthoptera, Ensifera)
Antaxius spinibrachius (Fischer, 1853), first record for France (Orthoptera, Ensifera). During orthopterological research in the Mayenne' s department, a new french species of Ensifera is discovered : Antaxius spinibrachius (Fischer, 1853). This endemic Iberian species is very restricted in this area and has probably involuntarily been introduced by working class populations coming for slate's quarrying. The Antaxius spinibrachius' population has been living for 25 years at least, cause of the particularly xerothermic conditions of the slate quarry. Then, a list of the Mayenne's department Orthoptera is updated and counts 42 taxa.Au cours de prospections orthoptérologiques effectuées dans le département de la Mayenne, une nouvelle espÚce d'EnsifÚre pour la France est découverte : Antaxius spinibrachius (Fischer, 1853). Cette espÚce, endémique de la péninsule Ibérique, est trÚs localisée et a été probablement introduite involontairement par des populations ouvriÚres venues pour l'extraction de l'ardoise. Les conditions particuliÚrement thermoxériques de la carriÚre ont permis à la population d 'A. spinibrachius de subsister, depuis au moins 25 ans. Enfin, une liste des OrthoptÚres du département de la Mayenne est mise à jour en annexe et porte à 42 le nombre de taxons identifiés.Noël Franck, Dusoulier François, Barrier Yannick. Antaxius spinibrachius (Fischer, 1853), nouvelle espÚce pour la France (Orthoptera, Ensifera). In: Bulletin de la Société entomologique de France, volume 107 (2), juin 2002. pp. 141-147
Un hémiptÚre nouveau en Europe : Ventocoris martini (Horvåth, 1889) (Het., Pentatomidae)
Lupoli Roland, Dusoulier François, Streito Jean-Claude, Foucart Antoine. Un HémiptÚre nouveau en Europe : Ventocoris martini (Horvåth, 1889) (Het., Pentatomidae). In: Bulletin de la Société entomologique de France, volume 112 (1), mars 2007. pp. 15-16