217 messages par Norbert VERNEAU

30/08/2022 Création de sujet : Crustacé SPM

Bonjour, voici un bien étrange petit crustacé de ±1 cm, trouvé sur un bulot à Saint-Pierre. iNaturalist me propose la famille des Hyperiidae, ce qui semble bien coller.


30/08/2022 Création de sujet : Aurelia en fin de vie à SPM

Bonjour, les Aurelia aurita sont en fin de vie à Saint-Pierre, et elles présentent des granulations colorées éparpillées dans l'ombrelle… ??? Produits de la reproduction ???


29/08/2022 Création de sujet : maladie de l'oursin Strongylocentrotus droebachiensis

Bonjour, nombreux sont les oursins verts de Saint-Pierre et Miquelon atteints de nécrose cette année, dans la zone des 0-10 m. La mortalité est déjà bien visible cet été (nombreux squelettes portant la trace de la maladie). Je n'ai que de vagues infos sur le facteur de cette épidémie (pêcherie du Canada, bactérie, 120 km de côte décimés en 1996).

Si des infos sont connues… Merci !


29/08/2022 Création de sujet : Sangsue sur chaboiseau

Bonjour, a t-on une chance d'aller jusqu'à l'espèce pour ces sangsues, observée à Saint-Pierre et Miquelon sur un chaboiseau ?


24/08/2022 Création de sujet : hydraires eaux froides SPM

Bonjour, une idée pour cet hydraire à Saint-Pierre ?


21/08/2022 Création de sujet : algue à Saint-Pierre et Miquelon

Une idée pour cette "frisée" qui abonde localement en ce moment ?


17/06/2022 Création de sujet : Pseudopleuronectes americanus ? à SPM

Je pense à Pseudopleuronectes americanus (écailles entre les yeux). Mais… c'est toujours bien d'avoir confirmation !


17/06/2022 Création de sujet : énigme en eau froide

Quel peu bien être ce chapeau choisi par un oursin vert à Saint-Pierre (SPM) ? (niveau débutant en poubelles jetées par des humains par-dessus bord).


17/06/2022 Création de sujet : Petit poisson SPM

Une idée pour cette miniature de ± 1,5 cm vue à Saint-Pierre ?


12/06/2022 Création de sujet : méduse SPM : une roue de vélo gélatineuse

Bonjour, je sèche dessus (au propre et au figuré, je suis si-ortie de l'eau il y peu)


12/06/2022 Création de sujet : chaboiseau à épines courtes aveugle à SPM

Qu'est-ce qui peut rendre les yeux de ce chaboiseau ainsi ?


09/06/2022 Création de sujet : Méduse SPM

Une autre méduse, que je rapproche de Catablema vesicarium ssp. nodulosum… Taille réduite (2 ou 3 cm).


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