MALE SIZE AND PARENTAL CARE IN THE SAND GOBY, POMATOSCHISTUS-MINUTUS
MALE SIZE AND PARENTAL CARE IN THE SAND GOBY, POMATOSCHISTUS-MINUTUS
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DOI：
10.1080/08927014.1993.9523117
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发表时间：
1993-05-01
影响因子：
1.2
通讯作者：
HELLSTROM, M
中科院分区：
文献类型：
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作者：
LINDSTROM, K;HELLSTROM, M
雄性沙虾虎鱼在无法获得食物的情况下保护一只雌性虾虎鱼的卵，在 10 天的照顾期内，它们的体重减轻了 13.9%。这是非守卫雄性体重减轻的两倍多，后者有巢但没有卵（体重减轻 5.8%）。因此，照顾卵子会给雄性带来能量消耗。田间蛋损失平均占蛋量的 3.3%。平均来说，有卵子损失的雄性比没有损失的雄性要小，而且它们的卵块也更小。如果一只雄性被移走，他的巢被新的雄性占领，那么 31.0% 到 100.0% 的原始卵会在 24 小时内被吃掉。在保护雄性的过程中，我们从未观察到异性同类相食的情况。雄性扇风的时间比例与其标准身长呈正相关，体型较大的雄性扇风的时间更多。结论是体型较大的男性是更好的父亲。
Sand goby males guarding eggs from one female without access to food lost 13.9% of their body weight over a caring period of 10 days. This was more than twice the body weight lost by non-guarding males, who had nests but no eggs (weight loss 5.8%). Caring for the eggs therefore imposes an energetic cost on the male. Egg losses in the field were on average 3.3% of the egg mass. Males with egg losses were on average smaller than males without losses and they also had smaller egg masses. If a male was removed and his nest taken by a new male, 31.0 to 100.0% of the original eggs were eaten within 24 hr. In guarding males we never observed hetero-cannibalism. The proportion of time a male spent fanning was positively correlated to his standard length, larger males spending more time fanning. It is concluded that larger males are better fathers.