Egg presence and developmental stage influence spawning-site choice by female garibaldi
Egg presence and developmental stage influence spawning-site choice by female garibaldi
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卵的存在和发育阶段影响雌性加里波第的产卵地点选择
DOI：
10.1016/s0003-3472(89)80038-7
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发表时间：
1989
期刊：
影响因子：
2.5
通讯作者：
P. Sikkel
中科院分区：
文献类型：
--
作者：
P. Sikkel
在产卵季节，男性加里波第，Hypsypops rubicundus（Pomacentridae），捍卫藻类巢内的永久领土上的女性存款鸡蛋。卵在发育的早期阶段是亮黄色的，随着发育的进行变成灰色。实地观察表明，女性优先接近巢蛋在发展的早期阶段之前，或在没有男性求爱，更有可能在这样的巢比在空巢或巢只有蛋在发展的高级阶段产卵。涉及成对操作的巢与鸡蛋的现场实验表明，巢之间，那些保留在早期发展阶段的鸡蛋显着更有可能收到新的鸡蛋之前，巢完全剥离这样的鸡蛋或只保留在发展的高级阶段的鸡蛋。在巢内包含鸡蛋在早期和先进的发展阶段，女性沉积的鸡蛋只有在其他鸡蛋在早期阶段。在早期阶段的鸡蛋的存在至少是一个因素影响观察到的选择模式。通过理论和实证研究，预测了在发育的早期阶段，雌性在其他卵之间的存款卵的偏好。
During the spawning season, male garibaldi,Hypsypops rubicundus(Pomacentridae), defend algal nests within permanent territories on which females deposit eggs. Eggs in the early stages of development are bright yellow and turn grey as development proceeds. Field observations indicated that females preferentially approached nests with eggs in the early stages of development prior to or in the absence of male courtship and were more likely to spawn in such nests than in empty nests or nests with only eggs in the advanced stages of development. Field experiments involving pairwise manipulations of nests with eggs revealed that, between nests, those that retained eggs in the early stages of development were significantly more likely to receive new eggs before nests that were completely stripped of such eggs or retained only eggs in the advanced stages of development. Within nests containing eggs in both the early and advanced stages of development, females deposited eggs only among other eggs in the early stage. The presence of eggs in the early stage is at least one factor influencing the observed choice pattern. Female preference to deposit eggs among other eggs in the early stages of development is predicted by theoretical and empirical studies on male care strategies and the sources of egg mortality among fishes with paternal egg-care.