More specific, the movement of members of a population as eggs and larvae from the spawning ground to the nursery area, as juveniles to the feeding grounds, and as adults to the spawning area.

 
  • 更特別的,族群的集體運動(dòng)如魚(yú)卵或幼魚(yú)從出生地到到育幼區域,稚魚(yú)時(shí)到覓食場(chǎng),與當成魚(yú)時(shí)到產(chǎn)卵區域。無(wú)法完成這個(gè)周期的個(gè)體(流浪漢)對基因庫沒(méi)有貢獻。
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