Characterization of sexual size dimorphism in mandarin fish and association with igfbp-5a/b regulation
Notice bibliographique
Résumé
Abstract Mandarin fish (Siniperca chuatsi) is an important cultured fish in East Asia that shows sexual size dimorphism (SSD), with females growing faster than males when reaching marketable size. However, the regulatory mechanism of SSD is not clear. To characterize SSD of mandarin fish and its association with gh/igf1/igfbp-5expression in female and male, gonadal developmental time-spectra of the females and the males from 1.5 to 4.0 mph were described, and growth parameters, serum levels of E2 and T, as well as the relative expression levels of gh, igf1, and igfbp-5a/b mRNAs were determined. The results showed that the fitting the logistic growth equation of body mass and total length of female and male were W(♀)=667.57/(1+e^(4.19-1.24*t)), W(♂)=582.71/(1+e^(4.07-1.27*t)), L(♀)=31.47/(1+e^1.95-1.08*t)), L(♂)=26.20/(1+e^(2.56-1.5*t)). The month of inflection points for body mass for females and males were 3.37 mph and 3.20 mph, respectively, when the body mass were 333.79 g and 291.36 g. The month of inflection points for total length growth were 1.80 mph and 1.70 mph, respectively, when the total length were 18.52 cm and 16.28 cm. At 1.5-2.0 mph, SSD was not clearly demonstrated. At 3.0 mph, the body mass of the females was significantly higher than that of the males (P < 0.05), E2 content of the females was significantly higher than that of the males (P< 0.05), T content of the males was significantly higher than that of the females (P < 0.05), and the expression level of brain gh and liver igf1 in the females was significantly higher than that of the males (P < 0.05). At 4.0 months of age, the body mass of the females was highly significantly higher than that of the males (P < 0.01), E2 content of the females was highly significantly higher than that of the males (P < 0.05), T content of the males was significantly higher than that of the females (P< 0.05), and the level of liver igf1 expression in the females was significantly higher than that of the males (P < 0.05). With the continuous development of gonads, muscle and liver igfbp-5a and -5b expression generally tends to increase in females and males, while igfbp-5a showed a gradual increasing trend, igfbp-5bexpression showed an "S"-type trend. There was no significant difference in muscle and liver igfbp-5a/b expression between males and females at the age of 1.5-2.0 months (P > 0.05), however, male igfbp-5a/bexpression was significantly higher than female at the age of 3.0-4.0 months (P < 0.05). This work verified that the females had faster growth rate since 3.0 mph compared to the males, which may be related to higher E2 levels in females leading to higher igf1 level, through inhibition of igfbp-5a/b expression.
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 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 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 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 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 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 ».