PATTERNS OF AGGRESSIVE ATTACK IN JUVENILE STEELHEAD TROUT (SALMO-GAIRDNERI)
PATTERNS OF AGGRESSIVE ATTACK IN JUVENILE STEELHEAD TROUT (SALMO-GAIRDNERI)
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DOI：
10.1139/f85-213
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发表时间：
1985-01-01
影响因子：
2.4
通讯作者：
DILL, LM
中科院分区：
文献类型：
--
作者：
ABBOTT, JC;DILL, LM
咬是一种潜在的破坏性的攻击行为的青少年钢头鳟鱼（萨尔莫gairdneri）。通过分析成对鱼的互动录像，我们确定了小日本的目标以及它们接触到鱼的身体的位置。还评估了鳍损伤的模式。目的和nips（接触）分布不同的互惠和非互惠的攻击性发作。在非互惠的较量，目的主要是针对背鳍，中央身体部分，尾鳍。夹持接触偏向尾鳍。在相互攻击中，攻击和撕咬都集中在背鳍和身体的前部。我们建议青少年刚头会因应对手的行为而调整打斗策略。嘴斗，一种新的行为在少年鳟鱼，观察到在一些相互的较量。背鳍受到的伤害最大。我们的结论是侵略（咬）是负责背鳍damge常见的孵化饲养鲑鱼。
Nipping is a potentially damaging aggressive behavior of juvenile steelhead trout (Salmo gairdneri). By analyzing videotaped interactions of pairs of fish we determined where nips were aimed and where they contacted the opponent''s body. Patterns of fin damage were also assessed. Aims and nips (contacts) were distributed differently in reciprocal and nonreciprocal aggressive bouts. In nonreciprocal bouts, aims were directed mainly at the dorsal fin, central body section, and caudal fin. Nip contact was biased towards the caudal fin. In reciprocal bouts, both aims and nips were concentrated on the dorsal fin and anterior portions of the body. We suggest that juvenile steelhead adjust their fighting tactics in response to opponent behavior. Mouth fighting, a novel behavior in juvenile trout, was observed in some reciprocal bouts. The dorsal fin incurred the greatest damage. We conclude that aggression (nipping) is responsible for the dorsal fin damge commonly observed in hatchery-reared salmonids.