GENOTYPE-DEPENDENT SURVIVAL, GROWTH, AND PRODUCTION IN CULTURED BLUE MUSSELS, MYTILUS SPP.: RESULTS OF A RECIPROCAL SEED TRANSFER EXPERIMENT
Notice bibliographique
Résumé
A reciprocal mussel seed transfer experiment was conducted involving two farm sites (Charles Arm and Thwart Island) whose seedstocks differed significantly in their respective compositions of Mytilus edulis L., M. trossulus Gould and hybrids. Electrophoretic variation at the mannose phosphate isomerase (Mpi) enzyme locus was used to classify the two species and their hybrids. Survival and growth in shell length, wet weight, shell weight and flesh weight were monitored over a 14-mo period. Both stock groups originating from Thwart Island seed (TI reared on its native site and the transferred TI-X stock) and the transferred stock group originating from Charles Arm seed (CA-X) showed no evidence of genotype-dependent variability in survival whereas, in the Charles Arm seed reared on its native site (CA), the proportion of M. edulis declined in relation to M. trossulus. There was no evidence of either a survival advantage or disadvantage in hybrids. After 14 mo, both transferred stocks (CA-X and TI-X) had comparatively higher frequencies of M. edulis and hybrids and lower frequencies of M. trossulus than did their respective nontransferred stocks (CA and TI) indicating a significant genotype x site interaction effect on survival. Significant species, stock, stock × time, species × time and stock × species × time effects on shell length, wet weight, shell weight and flesh weight occurred. Intrastock growth rates of M. trossulus were lower than M. edulis and hybrids for shell length (3 of 4 stocks), and for the 3 weight variables, wet weight, shell weight and flesh weight (4 of 4 stocks). These results support the conclusion that growth is genotype-dependent in rope-cultured mussel populations and that these differences in weight growth favoring M. edulis are maintained when such stocks are transferred to other sites. Mussel biomass (kg m−1) was similar for the CA, CA-X and TI-X stock groups and lower for the TI stock group. Rates of production (wet weight) over the 14-mo growout period were similar for the CA, CA-X and TI stock groups and significantly higher for the TI-X stock group. In both stock groups originating from Thwart Island seed (TI reared on its native site and the transferred TI-X stock), the intrastock rates of production of M. edulis and hybrids were significantly greater than sympatric M. trossulus. However, in the transferred Charles Arm stock (CA-X), the rates of production were similar in M. edulis and M. trossulus and significantly greater in hybrids. In the Charles Arm stock reared on its native site (CA), the rate of production of M. trossulus was significantly greater than either M. edulis or hybrids. We conclude M. edulis and hybrids have intrinsically greater rates of weight growth, but not necessarily length growth, than does M. trossulus. Neither M. edulis nor M. trossulus nor hybrids have consistently greater rates of survival or production in suspended rope culture. These results are discussed in the context of a directed seed-stocking program involving the transfer of M. edulis seedstocks to sites whose native stocks have a high M. trossulus component as a means to enhance commercial mussel production within the M. edulis-M. trossulus hybridization zone in Atlantic Canada.
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 distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,003 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
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 tête enseignante, 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 ».