A large number of roughneck shrimps, Rimapenaeus Pérez Farfante & Kensley, 1997, were collected in northwestern Florida Bay, southern Florida over four consecutive years (2000–2003) of monthly sampling during new-moon periods. Juveniles of Rimapenaeus spp. were more abundant than pink shrimp Farfantepenaeus duorarum (Burkenroad, 1939) juveniles, which are well-recognized and abundant inhabitants of Florida Bay. High Rimapenaeus spp. abundance was unexpected because the genus was previously reported only as occasional in Florida Bay. The populations of Rimapenaeus spp. were composed of late postlarvae and immature juveniles, suggesting that the northwestern border of Florida Bay serves as a nursery ground for this species. A clear seasonal recruitment pattern was observed with large peaks of postlarvae and small juveniles occurring in summer-fall and large juveniles in spring. The summer-fall peaks occurred during months with high mean water level and sea surface temperature; these two factors significantly predicted Rimapenaeus spp. abundance. Overnight hourly behavioral studies revealed that Rimapenaeus spp. juveniles were almost exclusively present in the water column during the dark hours of the ebb tide during current speed minimum. Juvenile abundance significantly differed between moon phases with shrimps being virtually absent during the illuminated full moon. These results indicate that Rimapenaeus spp. are phototactic negative, which may explain the low presence of this species in previous Florida Bay surveys conducted during daylight hours. This study highlights the previously unrecognized contribution of the abundance of juveniles of Rimapenaeus spp. to benthic-oriented crustacean communities of western Florida Bay and its border at the southwestern Florida Shelf.

中文翻译：

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美国佛罗里达州西北佛罗里达湾的rough虾的季节性丰度和diel行为（RipmapenaeusPérezFarfante和Kensley的物种，1997年）（十足目：Dendrobranchiata：Penaeidae）

在新月期间，连续四个月（2000-2003年）在佛罗里达南部的佛罗里达湾西北部佛罗里达州南部收集了许多粗虾，RipmapenaeusPérezFarfante和Kensley，1997。Rimapenaeus spp。的幼体。比粉虾Farfantepenaeus duorarum（Burkenroad，1939）幼鱼更丰富，它们是佛罗里达湾公认的丰富居民。高Rimapenaeus spp。丰度出乎意料，因为该属以前仅在佛罗里达湾报道过。里马彭内斯的人口spp。由后期幼虫和未成熟的幼体组成，表明佛罗里达湾的西北边界是该物种的苗圃。观察到明显的季节性募集模式，夏季秋季有大的幼虫高峰和小型幼虫，春季有大型幼虫。在平均水位高和海面温度高的月份中，发生了夏秋季的高峰。这两个因素显着预测了Rimapenaeus spp。丰富。隔夜的行为研究表明，Ripmapenaeusspp。在当前最低速度时，在退潮的黑夜中，水柱中几乎只存在幼鱼。月相之间的幼鱼丰度明显不同，在照亮的满月期间几乎没有虾。这些结果表明Ripmapenaeus spp。是光战术阴性的，这可能解释了该物种在以前的佛罗里达湾白天进行的白天调查中所占的比例较低。这项研究突出了丰富的Rimapenaeus spp幼体以前未被认可的贡献。到佛罗里达州西部海湾及其毗邻的西南佛罗里达大陆架的底栖生物甲壳类群落。