Notice bibliographique
Résumé
Orchestia forchuensis sp. nov. (Figs 12–14) Orchestia gammarella.― Bousfield, 1958: 885, figs 1e, 10a.― Bousfield, 1973: 159, pl. 45.1. Orchestia gammarellus.― Ingólfsson, 1996: 39, fig. 10.― Henzler & Ingólfsson, 2007: 1. Not Orchestia gammarellus (Pallas, 1776): 191, pl. 14, fig. 25. Types. Holotype, male, 12.0 mm (CNMC 1984-462), Cape Fourchou, Yarmouth County, Nova Scotia, 5 July,1956, E.L. Bousfield. Paratypes. 4 males, 8 females (CNMC 1984-462), same data as holotype. Other material studied. 3 females, 25 juveniles (CNMC 1984-472), 3 miles west of Le Cou Harbour, southwestern Newfoundland (47 o 38’N 58 o 41’W), 8 June 1966, D.E. McAllister; 2 males, 5 females (CNMC 1984-465) Gilbert Point, Digby County, Nova Scotia, E.L. Bousfield, 9 July 1958; 3 males, 5 females, 2 juveniles, (CNMC 1984-460), above Murphy’s river, Salmonier Estuary, Newfoundland, 15 August, 1954, E.L. Bousfield; 7 males, 11 females, Nauthólsvík, between Kópavogur (pubby seal bay) and Reykjavík, Iceland (64.117714 oN 21.900876 oW), September 2019, Davíð Gíslason; 9 males, 10 females, salt-marsh, under stones in the saltmarsh grass Puccinella maritima beds Galgahavn, Iceland (64.0549 oN 21.5728 oW), 23 September 2019, Jorundur Svavarsson. Type locality. Cape Fourchu, Nova Scotia. Etymology. Named after the type locality. Description of adult male (15 mm). Head. Eyes of moderate size. Antenna 1 short, just reaching beyond peduncular article 4 of antenna 2; accessory flagellum absent; primary flagellum with 5 articles. Antenna 2 peduncular article 5, 1.3 × length of peduncular article 4; flagellum longer than combined length of peduncular articles 4 and 5, with 19-20 articles, final article cone shaped, with terminal cluster of imbricated setae. Labrum without epistome. Mandible left lacinia mobilis with 4 cusps. Maxilliped palp article 2 with distomedial lobe. Pereon. Gnathopod 1 subchelate, coxa smaller than that of coxa 2; posterior margin of carpus and propodus each with lobe covered in palmate setae; propodus length to carpus length 1:1.6; propodus strongly triangular; dactylus shorter than palm. Gnathopod 2 subchelate; basis 2.3 × as long as broad; merus posterior margin with 3-5 short setae; propodus weakly triangular, distal width 1.7 × proximal width. Pereopods 3–7 bicuspidactylate, cusps sometimes becoming lost in large males. Pereopods 3–4 dactylus unguis relatively slender, acute, becoming short and blunt on pereopod 7 in large males Peropod 4 dactylus thickened proximally with a notch midway along posterior margin. Pereopod 5 basis subovoid. Pereopod 7 basis posterior margin distinctly serrate; merus elongate, weakly triangular, becoming 2 × as wide distally as proximally in large males; carpus elongate pyriform, 1.5 – 2 × as long as broad ; carpus subequal to merus in small males, becoming 1.5 × longer in large males; propodus 1.2 × length of carpus. Pleon. Epimeron 3 posterior margin weakly crenulate. Uropod 1 peduncle longer than rami, without distolateral robust seta; rami subequal. Uropod 2 peduncle subequal in length with rami, rami subequal; exopod with 2 marginal robust setae; endopod with 3 marginal robust setae and 2 robust setae on inner face. Uropod 3 peduncle only a little longer than broad; ramus 2.3 × as long as broad 0.6 × length of peduncle, outer margin with 6 robust setae. Telson with about 9 apical robust setae on each side. Female (sexually dimorphic characters). Gnathopod 2 mitten-shaped; basis 2 × as long as broad, broadest proximally, anterodistal margin substraight; carpus 1.4 × length of propodus. Pereopod 7 stout, basis posterior margin weakly serrate, merus and carpus unexpanded. Habitat. Limestone, gravel and pebble beaches; marshes among the saltmarsh grass Puccinella maritima. Remarks. Orchestia forchuensis sp. nov. is close to O. gammarellus (Pallas, 1776) but can be distinguished by the shape of the adult male pereopod 7 that has the merus almost parallel-sided, only about twice as broad distally as proximally in O. forchuensis sp. nov. (strongly triangular, almost three times as broad distally as proximally in O. gammarellus) and the carpus much longer than broad (almost as broad as long in O. gammarellus). The basis of pereopod 5 has a weakly developed posterodistal lobe in O. fouchouensis sp. nov. (well-developed in O. gammarellus) and the basis of the female pereopod 7 of Orchestia forchuensis sp. nov. is subovoid (approaches subquadranglar in O. gammarellus). That the North American populations of ‘ Orchestia gammarellus’ were probably a previously unrecognised species, was first pointed out by Perez-Schultheiss (2014, p. 30). Distribution. Canada Newfoundland: Campell’s Creek Cove, Port-au-Port peninsula; Little Bay, near Springfield; Exploits estuary; Philip’s Head; Placentia; Salmonier estuary; Trepassey, head of Mutton Bay; Fox Cove (Bousfield 1955); above Murphy’s river, Salmonier Estuary (present study); Gooseberry Cove (47°03.3’N 54°05.7’W), Kingwell Arm (47°33.5’N 54°06.O’W),Dirty Rocks (47°23.7’N 54°16.1’W),Margery Cove (47°24.5’N 54°09.0’W) (Fenwick & Steele 1983), Cou Harbour, south-western Newfoundland (47 o 38’N 58 o 41’W) (present study). Nova Scotia. Machias Seal Rock; St. Andrews; Argyle (Bousfield 1955). Gilbert Point, Digby County, Nova Scotia (present study). New Brunswick. Bay of Fundy (Bousfield 1960); Tidal Cove; Machais Seal Islands (Bousfield 1958). USA (New England); coast of Maine to Casco Bay (Bousfield 1973). Iceland. Extreme southwest, from the Vestmannaeyjar Islands to Reykjavíc and the northwest peninsula area associated with warm springs; Hvassahraun (64°01’11’’N 22°09’19’’W) Reykjanestjörn (63°47’52’’N 22°43’912’’W), Hveravik, Steingrimsfjördur (65°41’47’’N 21°33’55’’W); Bjarnarstadir, Isafjördur (65°49’16’’N 22°2’919’’W) and Reykjanes, Reykjafjördur (65°55’25’’N 22°25’53’’W); Kaldrananes (65°46’N 21°24’W) and Skarð (65°29’N 20°59’W) (Ingólfsson 1973, 1977, Morritt & Ingólfsson 2000, Ingólfsson et al. 2007, Henzler & Ingólfsson 2007).
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,003 | 0,003 |
| Études des sciences et des technologies | 0,002 | 0,001 |
| Communication savante | 0,001 | 0,002 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,011 | 0,010 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».