Parasitic dinoflagellate Hematodinium perezi prevalence in larval and juvenile blue crabs Callinectes sapidus from coastal bays of Virginia.
Parasitic dinoflagellate Hematodinium perezi prevalence in larval and juvenile blue crabs Callinectes sapidus from coastal bays of Virginia.
复制标题
寄生甲藻 Hematodinium perezi 在弗吉尼亚沿海海湾的幼虫和幼年蓝蟹 Callinectes sapidus 中流行。
DOI：
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发表时间：
2019
影响因子：
1.4
通讯作者：
JD Shields
中科院分区：
文献类型：
--
作者：
HJ Small;JP Huchin;KS Reece;KM Pagenkopp Lohan;MJ Butler;JD Shields
在美国东部沿海和墨西哥湾沿岸，寄生甲鞭毛虫的贝氏血藻侵染了美国蓝蟹Callinectes Sapidus和其他十足目动物。在季节性爆发期间，大型幼蟹和成年蓝蟹的死亡率很高，但对其在该宿主早期生活史阶段的存在知之甚少。我们确定了沿德尔马瓦半岛弗吉尼亚部分的多个地点的巨型幼蟹和早期底栖生物幼蟹中的H.perezi的流行率。在大洋沿岸海湾复合体内的几个地点收集的任何大孔虫中都没有检测到佩雷兹螺旋藻的DNA，在这些地点发现佩雷兹螺旋藻的流行程度很高。然而，在南湾和科布湾这两个大洋沿岸海湾的早期底栖幼鱼中，患病率很高。切萨皮克湾的流行率水平较低，包括切里斯通小溪、匈牙利小溪和旁戈蒂格小溪。在不同季节和连续几年进行的采样表明，在夏末和秋季，大眼鱼在德尔马瓦半岛的高盐度海湾定居后，疾病传播迅速发生。受感染的幼蟹可以与寄生虫一起越冬，当春季水温上升时，感染进展迅速，最终在春末夏初传播给其他螃蟹。在高盐度海湾，贝雷兹梭子蟹可以达到很高的流行水平，并可能对成年渔业中幼蟹的招募产生重大影响。
The parasitic dinoflagellate Hematodinium perezi infects the American blue crab Callinectes sapidus and other decapods along the Eastern seaboard and Gulf of Mexico coast of the USA. Large juvenile and adult blue crabs experience high mortality during seasonal outbreaks of H. perezi, but less is known about its presence in the early life history stages of this host. We determined the prevalence of H. perezi in megalopae and early benthic juvenile crabs from multiple locations along the Virginia portion of the Delmarva Peninsula. The DNA of H. perezi was not detected in any megalopae collected from several locations within the oceanic coastal bay complex in which H. perezi is found at high prevalence levels. However, prevalence levels were high in early benthic juveniles from 2 oceanic coastal embayments: South Bay and Cobb Bay. Prevalence levels were lower at locations within Chesapeake Bay, including Cherrystone Creek, Hungars Creek, and Pungoteague Creek. Sampling over different seasons and several consecutive years indicates that disease transmission occurs rapidly after megalopae settle in high-salinity bays along the Delmarva Peninsula during the late summer and fall. Infected juvenile crabs can overwinter with the parasite and, when subjected to increasing water temperatures in spring, infections progress rapidly, culminating in transmission to other crabs in late spring and early summer. In high-salinity embayments, H. perezi can reach high prevalence levels and may significantly affect recruitment of juvenile blue crabs into the adult fishery.
影响因子：
3.5
作者：
MEDLIN, L;ELWOOD, HJ;SOGIN, ML
通讯作者：
SOGIN, ML