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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Host recognition behaviour and its specificity in pontoniine shrimp Zenopontonia soror (Nobili, 1904) (Decapoda: Caridea: Palaemonidae) associated with shallow-water sea stars
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Host recognition behaviour and its specificity in pontoniine shrimp Zenopontonia soror (Nobili, 1904) (Decapoda: Caridea: Palaemonidae) associated with shallow-water sea stars

机译：与浅水海星相关的浮体虾对虾Zenopontonia soror（Nobili，1904）（十足目：Caridea：Palaemonidae）的宿主识别行为及其特异性

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摘要

Host recognition is characteristic of many symbiotic invertebrates, including decapods. It was previously shown that, as a rule, the wider the range of hosts the less specific is the symbiont's recognition reaction. To test this hypothesis, we investigated pattern of host use, host recognition behavior and its specificity in an obligate generalist symbiont, pontoniine shrimp Zenopontonia soror. Worldwide this symbiont inhabits at least 23 species of shallow-water tropical sea stars, 10 species of which are in the studied area, the Bay of Nhatrang, Vietnam. The main part of the Z. soror population in the Bay is unevenly distributed between 4 abundant sea star species, Acanthaster planci, Culcita novaeguineae, Choriaster granulatus and Linckia laevigata. However, the prevalence of infestation of the latter species was very low despite its abundance. Such distribution across the hosts may be related to their relative size and morphological complexity. It seems that the distribution and the number of Z. soror shrimp in the Bay are controlled not only by the number, but also by species composition of the hosts. Host selection experiment in aquaria showed that Z. soror is able to recognize and distinguish the host species with which they were associated in the sea (C. novaeguineae or A. planci) among other sea stars including species recorded as possible hosts (L. laevigata, A. planci, and C. novaeguineae). Experimental results demonstrated that the symbiont-host relationship is based on host chemical and visual cues, however, symbionts' reaction to visual cues and their ability to recognize objects visually was low. Our data show that even generalists symbionts have specificity, which is probably supported by the habit forming to a specific species of host (host-imprinting).
机译：宿主识别是许多共生无脊椎动物（包括十足动物）的特征。以前已经证明，通常，宿主的范围越广，共生体的识别反应就越不特异性。为了检验该假设，我们调查了专职的共生体，pontoniine虾Zenopontonia soror的宿主使用模式，宿主识别行为及其特异性。在世界范围内，这种共生体至少栖息于23种浅水热带海星中，其中10种位于研究区域越南的Nhatrang湾。海湾中的Z. soror种群的主要部分在4种丰富的海星物种，棘轮藻（Acanthaster planci），新黄瓜（Culcita novaeguineae），Chariaster granulatus和Linckia laevigata之间分布不均。然而，尽管后者种类丰富，但其侵染流行率却很低。跨宿主的这种分布可能与它们的相对大小和形态复杂性有关。看来，湾中虾虾的分布和数量不仅受宿主数量的控制，还受寄主物种组成的控制。水族馆中的寄主选择实验表明，苏氏梭母能够识别和区分与它们在海中相关的寄主物种（C. novaeguineae或A. planci）以及其他海星，包括记录为可能寄主的物种（L. laevigata） ，A。planci和C. novaeguineae）。实验结果表明，共生体与宿主的关系是基于宿主的化学和视觉线索，然而，共生体对视觉线索的反应及其在视觉上识别物体的能力很低。我们的数据表明，即使是通才主义者的共生体也具有特异性，这可能由形成特定宿主物种的习惯（宿主印迹）所支持。

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