Question 220

Antibes, alpes maritimes, 10m

10/03/2007

adrien weckel

Lieu de prise de vue : Antibes, alpes maritimes, 10m
Date de prise de vue : 10/03/2007
Nom du photographe : adrien weckel
Agrandir l'image

Comment citer cette question :
https://doris.ffessm.fr/Forum/Question-2202

Réf : 220

Adrien WECKEL le 11/03/07

J'ai croisé à la descente un ofni (objet flotant non identifié), si quelqu'un peut m'aider et me dire de quoi il s'agit, merci!

Répondre

8 réponses • Etre prévenu des réponses par email

Frédéric ZIEMSKI le 07/04/07

Bonjour à tous,

Adrien je me suis permis de prendre les photos de cette méduse sur ton site et je vais faire la fiche, passionné que je suis par ces bestioles, en me servant de ma (maigre) documentation et en me servant surtout du texte de Claudia Mills que je vais essayer de traduire.

à bientôt en ligne

Fred

Vincent MARAN, animateur du Forum le 02/04/07

Bonjour à tous !
Il ne m'a pas été possible de participer au forum ces derniers temps, mais je suis heureux de voir à quel point il a bien tourné !

Voici une réponse reçue par Fred ZIEMSKI, si qqun a le temps, ce serait bien de la traduire, mais je ne doute pas qu'une fiche DORIS sera faite quand Fred Z aura récupéré toutes les connexions internet souhaitées

Voici donc la réponse de Claudia Mills:

Bon jour Frédéric,

That is Solmissus albescens, a Mediterranean endemic species. If you have access to a university library, I wrote a paper on this species off Nice with Jacqueline Goy:

Mills, C.E. and J. Goy, 1988. In situ observations of the behavior of mesopelagic Solmissus narcomedusae (Cnidaria, Hydrozoa). Bulletin of Marine Science (Proceedings of the Zooplankton Behavior Symposium), 43: 739-751.

Summary: Solmissus albescens is the most numerous medusa in the mesopelagic western Mediterranean. This endemic species undergoes a nocturnal vertical migration from a depth of 400-700 m to the upper 100 m. In situ observations of S. albescens reported here were made during 10 dives using the French submersible CYANA in 1985-1986 in conjunction with simultaneous conventional plankton sampling, and are combined here with published observations by earlier French submersible users for completeness. The hundreds of 2-5 cm diameter S. albescens seen from the CYANA were almost always actively swimming regardless of time of day, with pulsation frequencies between 1.3 and 2.0 Hz. Swimming becomes directional at dawn and at dusk and the speed of upward and downward migrations appears to be the same, approximately 100 m per hour as estimated from in situ point observations and from population depth distribution at different times of late afternoon, evening and morning. Vertical migration appears to be conducted solely by swimming without need for changes in buoyancy. S. albescens can hold its non-extensible tentacles directly above its bell, curved laterally outward, or directed downward. Unlike many other hydromedusae, S. albescens swims and feeds simultaneously. Although all net-collected Solmissus had empty guts both during the day and at night, from the submersible we saw S. albescens feeding on non-migratory epipelagic Cavolinia pteropods at night. One S. albescens during the day was seen capturing a lobate ctenophore, but all other daytime observations indicated empty guts. Solmissus and other narcomedusae may be limited to feeding on soft-bodied prey by the type of nematocysts on their tentacles (apotrichous isorhizas). S. marshalli has also been observed in situ, from the SEA LINK II and PISCES IV submersibles. In comparison to S. albescens, this cosmopolitan mesopelagic species has slower swimming speed (0.6-0.7 Hz), frequent periods of quiescence, and no long-range diel migrations.

Claudia

Frédéric ZIEMSKI le 24/03/07

Salut à vous,

Pour moi, il s'agit bien d'une Solmaris, une narcoméduse. Quant à dire l'espèce !?!! Chapeau pour ces belles photos. Je ferais bien la fiche !!!
à bientôt
Fred

Adrien WECKEL le 16/03/07

Mes photos sont bien sur à votre disposition pour les fiches Doris. Les photos sont compressées sur Picasa, si la résolution n'est pas suffisante, il suffit de me demander et je vous enverrai les originaux.
Pour ce qui est de la tendance bio de certaines photos,ça ne fait que deux ou trois ans que je m'intéresse à cet aspect là de la plongée. Et j'aimerai remercier stéphane Jamme, responsable de la commission départementale d'environnement et de biologie subaquatique des alpes maritimes, véritable passionné de biologie marine et qui a su faire découvrir cette autre approche de la plongée, à moi et à beaucoup, beaucoup d'autres. Il a créé une véritable dynamique, dans un département où la bio était très peu développée avant son arrivée il y a trois ou quatres ans.

Frédéric ANDRÉ le 15/03/07

Merci beau pour ton lien où j'ai découvert tes très beaux clichés à tendance bio! Pleins d'énigme à decouvrir. Nous autorises-tu à télécharger tes photos pour nos fiches Doris?
FredA

Adrien WECKEL le 13/03/07

Si vous voulez voire les autres photos de cette hydroméduse, elles sont sur le lien suivant :
http://picasaweb.google.com/adiweckel/20070310Rascoui

Adrien WECKEL le 13/03/07

Pour ce qui est du nombre de filaments, en regardant les différentes photos que j'ai j'entrouve à chaque fois 16. En ce qui concerne la taille, le disque faisait au moins 40 ou 50 mm de diamètre (peut être plus). Est ce que ça peut correspondre à ton hydroméduse ? La seule photo que j'ai trouvé de cette espèce semble présenter quelques différences (croix blanche qui coupe le disque en 4). Mais j'ai également trouvé des dessins représentant cette espèce ainsi que des espèces proches. Les dessins ressemblent pas mal et ça pourrait effectivement être Solmaris flavescens. Mais bon, c'est difficile de dire précisément, il y plusieurs espèces qui ressemblent.

Frédéric ANDRÉ le 12/03/07

Bonjour,
Frédéric Ziemski, bientot de retour, nous en dira plus. Mais je pense qu'il s'agit d'une hydroméduse (Narcomedusae): Solmaris flavescens. 12-17 tentacules, 15 mm (ça correspond bien à l'individu photographié??), Méditerranée occidentale+Adriatique, rare. (Riedl)

tube loomtube loom hdpe extruderhdpe extruder coil slittercoil slitter ss meshss mesh baghouse bagsbaghouse bags oem hingesoem hinges high speed loomhigh speed loom scaffold clipsscaffold clips strap brastrap bra plum couplingplum coupling bauxitebauxite type of brc meshtype of brc mesh weld meshweld mesh cat heaterscat heaters coverlet setcoverlet set sorter ricesorter rice sun solarsun solar wire gripwire grip gmo pcrgmo pcr hot millhot mill meat dicermeat dicer car headrestcar headrest sintered feltsintered felt liner millliner mill fdy yarnfdy yarn tractor rimstractor rims mesh brcmesh brc deco meshdeco mesh 51r car battery51r car battery mirror glassmirror glass porous filters factoryporous filters factory msg saltmsg salt mirror bulkmirror bulk vm railvm rail crutch canecrutch cane walk aidwalk aid hpmc pricehpmc price clay ceilingclay ceiling mdr ivdmdr ivd bed nettingbed netting metal cut discmetal cut disc sheep troughsheep trough pumps slurrypumps slurry mobile gantrymobile gantry iron gratesiron grates black hi vis pantsblack hi vis pants zinc pdfzinc pdf scooter carscooter car fence brcfence brc uav radaruav radar pipe glasspipe glass egg packeregg packer vehicle washvehicle wash local seo firmlocal seo firm hot back padhot back pad shaw nowshaw now pvc gym matpvc gym mat sand scrubsand scrub m16 cap headm16 cap head fence parkfence park balloon clipsballoon clips drip torchdrip torch e vapee vape carbon filter processcarbon filter process dog statuesdog statues naoh 100naoh 100 prop upsprop ups frp elbowfrp elbow steel capssteel caps hex nut 8mmhex nut 8mm gas boostergas booster oxide redoxide red x castingx casting weld mesh sizeweld mesh size menthol pdfmenthol pdf amino pumpamino pump api drug companyapi drug company cage petscage pets long wn flangelong wn flange iron shoesiron shoes mini swathermini swather lock nutlock nut bolt shieldbolt shield west binswest bins upholstery foam cutterupholstery foam cutter 316 wire316 wire green steel fence postgreen steel fence post extract de rhodiolaextract de rhodiola rain shellrain shell rose extract for foodrose extract for food dyed sanddyed sand helideck netshelideck nets small auger conveyorsmall auger conveyor elbow quoteselbow quotes white micawhite mica motor sealmotor seal farm buildingfarm building guard hoseguard hose ss316 valvess316 valve turf faketurf fake emc honeycombemc honeycomb trex throttletrex throttle post rampost ram vape cbdvape cbd head pulleyhead pulley corn crispscorn crisps granule epdmgranule epdm oval wood nailsoval wood nails thumb wristthumb wrist boys pantsboys pants ankara waxankara wax 358 fence358 fence er308er308 white sandwhite sand isuzu drum brakesisuzu drum brakes dynamo car partsdynamo car parts pollen producerDifferent Types of Artificial Pure Pollen Block Producer frp vesselfrp vessel alu panelsalu panels cam ringcam ring retort packretort pack soba pastasoba pasta oil and filteroil and filter 50m hose50m hose auto parts oemauto parts oem air hose pvcair hose pvc mica powdemica powde sony 110ssony 110s 5 inch pump5 inch pump q pqqq pqq 5xl waders5xl waders oak dance flooroak dance floor mesh cagemesh cage cable winch electriccable winch electric hanging trackhanging track engine cartengine cart pvc panelpvc panel ion exchange softeningion exchange softening 316 pipe316 pipe bin bagsbin bags auto control armauto control arm medical forming filmsmedical forming films pbtcpbtc bag closerbag closer bath matsbath mats gfrp tubegfrp tube pebbles pinkpebbles pink buy walnuts in shellbuy walnuts in shell lock nutlock nut glass pot teaglass pot tea rails wheelsrails wheels hub tenthub tent slitter saw bladesslitter saw blades sludge pumpsludge pump iron cast customiron cast custom la gorgela gorge heat welderheat welder basic red 5basic red 5 reed thread rollerreed thread roller drum screendrum screen granite padgranite pad brake drumbrake drum pet coke usespet coke uses frp pipe pricefrp pipe price k3 edtak3 edta conrod for saleconrod for sale knot candleknot candle china jacket pricechina jacket price tin can shreddertin can shredder sweep 90sweep 90 pro bmxpro bmx phone glovesphone gloves hpmc e3hpmc e3 pilates rackpilates rack camo jacketcamo jacket oil testeroil tester ss wire meshss wire mesh cambric tapecambric tape wear yogawear yoga metal hosemetal hose lever chainlever chain skid matsskid mats clicky hipclicky hip animal feed premixanimal feed premix hog casings for salehog casings for sale earth rodearth rod prv valveprv valve red grill panred grill pan fluted glassfluted glass ocean iodineocean iodine coated sandcoated sand mesh capmesh cap acrylic hatacrylic hat prenatal petprenatal pet clothingclothing oem shale screenoem shale screen stone mosaic supplierstone mosaic supplier wpc timberwpc timber hpmc 603hpmc 603 pvc footballpvc football oem towelsoem towels pin gaugepin gauge finish nail factoryfinish nail factory vape usevape use slicker coatslicker coat chain fence linkchain fence link mipi csimipi csi oval steel tubingoval steel tubing cmc hpmccmc hpmc sbr styrenesbr styrene mdf boardmdf board badges bulkbadges bulk foot valvefoot valve plc stepplc step pet cat treepet cat tree chain fencechain fence spear headsspear heads steel sheet holessteel sheet holes mirror glassmirror glass solar storagesolar storage edge stripsedge strips air valveair valve blue tinted glassblue tinted glass tds sensortds sensor submersible mixersubmersible mixer cream chargercream charger clamp companyclamp company baling wirebaling wire kopling j55kopling j55 ml dropperml dropper ul pipeul pipe steel conesteel cone al abayaal abaya chef gownchef gown metal drumsmetal drums mill rollermill roller drum burnisherdrum burnisher drywall griddrywall grid pva 1788pva 1788 gas turbinegas turbine e bike goe bike go closing capclosing cap air bearingair bearing weld smokeweld smoke shag rugshag rug mug doublemug double aviary meshaviary mesh pet kennelpet kennel front difffront diff mining meshmining mesh astm 106bastm 106b pva 18 88pva 18 88 ss pipe millss pipe mill 100 acetic acid100 acetic acid felt cat bedfelt cat bed types of bolttypes of bolt cast iron vscast iron vs feet toxin soakfeet toxin soak cpr bed pricecpr bed price full sus bikefull sus bike d shaft geard shaft gear frp filter tankfrp filter tank solar container housesolar container house leap the dipsleap the dips cement hose pipecement hose pipe dutch weave meshdutch weave mesh national storagenational storage drainage pumpdrainage pump honda car air filterhonda car air filter clothes for dogsclothes for dogs perforated metal meshperforated metal mesh china sausage machinechina sausage machine custom 6309 zzcustom 6309 zz chain link wire meshchain link wire mesh bulk custom stickersbulk custom stickers trainer parka for ladiestrainer parka for ladies atrazine herbicideatrazine herbicide rebar positionerrebar positioner lithopone for inklithopone for ink steel wire spiral hydraulic hosesteel wire spiral hydraulic hose exterior stoneexterior stone galvanized wire 6mmgalvanized wire 6mm pure iron wokpure iron wok brc wire meshbrc wire mesh green safety vestgreen safety vest baby bike supplierbaby bike supplier cast iron wokcast iron wok fan belt for carfan belt for car water gate valvewater gate valve sleeping bag adultsleeping bag adult high quality manual hydraulic lift cylinderhigh quality manual hydraulic lift cylinder ammonium sulphate 50 kgammonium sulphate 50 kg wholesale disc type check valvewholesale disc type check valve paprika seasoningpaprika seasoning oem slab post shoreoem slab post shore china ppr pipe 20mmchina ppr pipe 20mm spark plug washerspark plug washer steam boiler workingsteam boiler working brake pipe made to orderbrake pipe made to order conference table and chair setsconference table and chair sets fontaine fifth wheel dealersfontaine fifth wheel dealers linen fabric block out for curtainlinen fabric block out for curtain cedar reed diffusercedar reed diffuser small roll forming machinesmall roll forming machine storage beam forming machinestorage beam forming machine lawn chain link fencelawn chain link fence paper folding machine for air filterpaper folding machine for air filter hydraulic oil press machinehydraulic oil press machine metal 5 gallon bucketsmetal 5 gallon buckets lab test for syphilislab test for syphilis black pvc price stripblack pvc price strip gabion basket fire pitgabion basket fire pit high quality decor base paperhigh quality decor base paper silica fume powdersilica fume powder welding electrode 6011welding electrode 6011 160g fiberglass mesh rolls pricelist160g fiberglass mesh rolls pricelist kvvp cable companykvvp cable company black chain link fabricblack chain link fabric turmeric curcumin 1500mgturmeric curcumin 1500mg colour of indigo powdercolour of indigo powder the tin can manufacturersthe tin can manufacturers enfamil low iron powderenfamil low iron powder best embroidery single head machinebest embroidery single head machine door jamb rubber sealdoor jamb rubber seal odm fine gochugaruodm fine gochugaru black expanded metal meshblack expanded metal mesh rotary egg tray machinerotary egg tray machine boiler manufacturer indiaboiler manufacturer india paddle tennis indoor supplierspaddle tennis indoor suppliers high quality water melon seedhigh quality water melon seed stainless carriage boltsstainless carriage bolts methionine water clarifiermethionine water clarifier

Question 220

Vous devez posséder un compte DORIS

Se connecter

Créer un compte

Nos partenaires