Chemical sensing and avoidance of PaV1-infected conspecifics by pueruli post-larvae of the reef-dwelling Caribbean spiny lobster Panulirus argus Latreille, 1804 (Decapoda: Achelata: Palinuridae)

IF 1.2 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Journal of Crustacean Biology Pub Date : 2023-11-07 DOI:10.1093/jcbiol/ruad065
Louis J Ambrosio, J Antonio Baeza
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Abstract

Abstract Little is known about chemical sensing during settlement by pueruli of the Caribbean spiny lobster Panulirus argus Latreille, 1804 and the effect that Panulirus argus virus 1 (PaV1), the first pathogenic virus to infect any spiny lobster, has on settling pueruli. Considering that the avoidance of PaV1-infected lobsters by early-benthic juveniles is well documented and the previously reported costs of close proximity to PaV1-infected early-benthic juveniles (increased mortality risk), pueruli of P. argus should avoid infected conspecifics during settlement. We experimentally tested if pueruli show aversion to PaV1-infected conspecifics. We also re-tested the previously reported effect of red algae (Laurencia spp.) and healthy conspecifics on pueruli settlement decisions. Considering the known benefits of inhabiting red algae and costs of close proximity to conspecific juveniles, pueruli were predicted to be attracted to metabolites produced by red algae and repulsed by metabolites produced by conspecifics. We also predicted that attraction to red algae would decrease or cease if this cue was presented together with cues produced by PaV1-infected conspecifics. Our experiments indicate that pueruli do not avoid metabolites produced by benthic juveniles and are not attracted to metabolites produced by red algae. Importantly, pueruli are attracted to a combination of metabolites produced by red algae and conspecific juveniles but this attraction ceases if conspecifics are PaV1-infected. Our results indicate that PaV1 disrupts habitat selection by settling pueruli and suggest that assumptions about cost and benefits experienced by settling pueruli need to be revisited. Research to improve the understanding of the relationship between recruitment, disease avoidance, and fishery stock in this heavily exploited spiny lobster is needed.
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礁栖加勒比大螯虾(Panulirus argus Latreille, 1804)幼虫对感染pav1的同种生物的化学感知和躲避
摘要对加勒比海棘龙虾Panulirus argus Latreille, 1804在葛根沉降过程中的化学感应以及首个感染棘龙虾的致病病毒Panulirus argus virus 1 (PaV1)对葛根沉降的影响,目前所知甚少。考虑到早底栖幼鱼对感染了pav1的龙虾的回避已有充分的文献记录,以及之前报道过的接近感染了pav1的早底栖幼鱼的代价(死亡风险增加),在定居过程中,圆弧沼虾的幼鱼应该避免感染的同种龙虾。我们通过实验测试了葛褥子是否对感染了pav1的同种异体表现出厌恶。我们还重新测试了先前报道的红藻(Laurencia spp.)和健康同种动物对葛uli定居决定的影响。考虑到栖息红藻的已知好处和接近同生幼鱼的代价,预测葛朴会被红藻产生的代谢物所吸引,而被同生幼鱼产生的代谢物所排斥。我们还预测,如果该提示与感染pav1的同种虫产生的提示一起出现,对红藻的吸引力将减少或停止。我们的实验表明,葛uli不会避开底栖动物幼崽产生的代谢物,也不会被红藻产生的代谢物所吸引。重要的是,葛根会被红藻和同生幼虫产生的代谢物所吸引,但如果同生幼虫感染了pav1,这种吸引力就会消失。我们的研究结果表明,PaV1通过沉降葛根破坏栖息地选择,并建议需要重新审视关于沉降葛根所经历的成本和收益的假设。需要进行研究,以提高对这种被大量捕捞的带刺龙虾的招募、疾病预防和渔业资源之间关系的理解。
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来源期刊
Journal of Crustacean Biology
Journal of Crustacean Biology 生物-海洋与淡水生物学
CiteScore
2.10
自引率
9.10%
发文量
66
审稿时长
6-12 weeks
期刊介绍: The Journal of Crustacean Biology is the official journal of The Crustacean Society, publishing peer-reviewed research on all aspects of crustacean biology and other marine arthropods. Papers are published in English only, but abstracts or summaries in French, German, Portuguese, or Spanish may be added when appropriate.
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