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グレー・ムレットの複合性判定 ムギル・セファルス 個体の全ゲノム配列データによって示唆される
Mbarsid Racaku1, Serena Ferraresso1, Massimiliano Babbucci1
1Department of Comparative Biomedicine and Food Science, University of Padova, 35020 Legnaro, Padua, Italy.
Animals : an open access journal from MDPI
|August 28, 2025
まとめ
ムギルの頭蓋骨の 性別決定は複雑です 卵泡刺激ホルモン受容体 (fshr) 変異は部分的な役割を果たしますが,新しい sestd1 遺伝子変異は ZZ / ZW システムを示唆し,環境要因もまた,この海洋魚の性に影響を与える可能性があります.
科学分野:
- 遺伝学とゲノミクス
- 海洋生物学
- 進化生物学
背景:
- ムギル・セファルス (Mugil cephalus) は,世界的に重要な海洋魚種です.
- 以前の研究では,卵泡刺激ホルモン受容体 (fshr) 遺伝子変異を含むXX/XY性決定 (SD) が示されたが,関連性は不完全であった.
- SDメカニズムの内定的な変異は,追加の遺伝的または環境的要因を示唆しています.
研究 の 目的:
- ムギル・セファルスに 高品質のゲノムアセンブリを 作るため
- 異なる地中海の集団における性決定に関連する遺伝的変異を調査する.
- ムギル頭部のSDに寄与する新しい遺伝子や因子を特定する.
主な方法:
- 2つの地中海の集団から男性と女性のムギル・セファルの全ゲノム再配列化
- 先進的な技術を用いたゲノムアセンブリ
- fshr と sestd1 の遺伝子を含む遺伝子変異の分析
主要な成果:
- fshr遺伝子の変異は,ムギルの頭蓋骨の性別決定を部分的に説明しました.
- sestd1遺伝子の新しい内定変異は,ZZ/ZWの性別決定と関連していた.
- 人口特有のSD変異は地域的な変化を示唆し,不完全な変異関連は潜在的な環境的影響を示唆する.
結論:
- ムギル頭蓋骨の性別決定は,XX/XYとZZ/ZWの両方のシステムを含む多因性です.
- sestd1遺伝子は,この種のSDの新たな候補である.
- 環境要因が遺伝子要素と相互作用して,ムギルの頭蓋骨の性別を決定する.
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