Frade D G, Santos M J, Cavaleiro F I
Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR),Universidade do Porto,Rua dos Bragas 289,4050-123 Porto,Portugal.
Parasitology. 2016 Jan;143(1):87-96. doi: 10.1017/S0031182015001493. Epub 2015 Nov 9.
The reproductive effort of Lepeophtheirus pectoralis (Müller O. F., 1776), a caligid copepod, which is commonly found infecting the European flounder, Platichthys flesus (Linnaeus, 1758), is studied in detail for the first time. Seasonal variation in body dimensions and reproductive effort are analysed. Data for 120 ovigerous females, 30 from each season of the year, were considered in the analyses. Females were larger and produced a larger number of smaller eggs in winter, than during the summer. The relationship between egg number and egg size is similar to that recorded for other copepods exploiting fish hosts. Much of the recorded variation was also similar to that reported for a copepod parasitic on an invertebrate host, which suggests the possibility of a general trend in copepod reproduction. Overall, our results provide further support for the hypothesis that there is an alternation of summer and winter generations.
首次对常见感染欧洲比目鱼（Platichthys flesus，林奈，1758）的锚头鳋科桡足类——胸锚头鳋（Lepeophtheirus pectoralis，米勒·奥夫，1776）的繁殖力进行了详细研究。分析了其身体尺寸和繁殖力的季节性变化。分析中考虑了120只抱卵雌体的数据，一年中每个季节各30只。冬季的雌体比夏季的更大，且产出的卵数量更多但单个卵更小。卵数量与卵大小之间的关系与其他寄生在鱼类宿主上的桡足类记录的情况相似。记录到的许多变化也与寄生在无脊椎动物宿主上的一种桡足类所报告的情况相似，这表明桡足类繁殖可能存在一种普遍趋势。总体而言，我们的结果为夏季和冬季世代交替这一假说提供了进一步支持。
