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首页> 外文期刊>Marine biology >Non-native brittle star interactions with native octocoral epizoites: an endemic benthic ctenophore in peril?
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Non-native brittle star interactions with native octocoral epizoites: an endemic benthic ctenophore in peril?

机译:与天然八陶瓷渗透液的非本地脆性星形相互作用:危险的流行病肠道肠道?

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摘要

Widespread and large populations of the non-native eastern Pacific ophiuroid brittle star Ophiothela mirabilis now occur in southeastern Florida, extending the range of this recently introduced species from southern Brazil northward to the eastern Caribbean Sea and Florida. The Florida brittle stars, representing two lineages, are epibionts on shallow (3-18 m depth), tropical/subtropical plexaurid (e.g., Eunicea spp., Muricea spp.) and gorgoniid (Antillogorgia spp.) octocorals. The scope of this study includes recent distributional records of O. mirabilis in south Florida, field abundances in relation to the cohabiting endemic ctenophore Coeloplana waltoni, behavioral observations of the ophiuroid, ctenophore and the predatory amphipod Caprella penantis, as well as a laboratory experiment testing the effects of the non-native ophiuroid on the native ctenophore. Individuals of O. mirabilis have been collected near St. Lucie Inlet, extending its northern-most range by about 110 km since 2019. Two years of field sampling have demonstrated significant declines of the native, benthic ctenophore with increasing abundances of the non-native ophiuroid. Evidence suggests that the ophiuroid is negatively affecting the abundances of the ctenophore through interference competition, greatly aided by its abrasive armature of calcareous spines, plates and hooks. This detrimental effect justifies considering O. mirabilis as an invasive species in south Florida. Sporadic and intense predation by a caprellid amphipod also probably contributes to the ctenophore's decline, but to a lesser extent than that caused by the ophiuroid. Adding to the risk of extinction of C. waltoni is its narrow requirement of living octocorals as hosts and restricted distribution in southeast Florida and the Bahamas.
机译:非本土东部太平洋关染术脆性星级蛋白塞拉伯发现的广泛和大型人口现在发生在佛罗里达州东南部,从巴西南部到东加勒比海和佛罗里达州最近引入了这一物种的范围。佛罗里达州代表两个谱系的脆性恒星是浅(3-18米深度),热带/亚热带葡萄龙(例如,eunicea spp。,muricea spp.)和gorgoniid(antillicrogorgia spp。)八封装的遗传。本研究的范围包括最近南佛罗里达州米拉巴里斯的最近分布记录,与同居特有的CTENOPORE COOPPLANA WALTONI,关染症,CTEROOPORE和捕食性AMphipod Caprella Penantis的行为观察以及实验室实验测试的田间丰富非天然眼镜尿对天然CTENOPORE的影响。在圣卢西尼亚人附近收集了O. Mirabilis的个人。自2019年以来,北方最北部大约110公里延伸。两年的田间抽样已经表现出本土的显着下降,随着非原产的丰富的丰富关染症。证据表明,眼镜通过干扰竞争产生了对CTENOPORE的丰富,极大地辅助钙质刺,板和钩子的磨蚀电枢。将O. Mirabilis作为南佛罗里达州的侵入性物种,这种有害效果证明了这一有害效果。孢子素和普罗兰氏症Amphipod的散发性和激烈的捕食也可能导致Ctenophore的下降,但在较小程度上的程度上比由过孔瘤引起的程度较小。增加了C. Waltoni灭绝的风险是它在佛罗里达州东南部和巴哈马的宿主和受限制分布的狭窄要求。

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  • 来源
    《Marine biology》 |2021年第9期|142.1-142.12|共12页
  • 作者单位

    Univ Miami Rosenstiel Sch Marine & Atmospher Sci Dept Marine Biol & Ecol 4600 Rickenbacker Causeway Miami FL 33149 USA;

    Univ Miami Rosenstiel Sch Marine & Atmospher Sci Undergrad Marine & Atmospher Sci Program 1365 Mem Dr 210 Ungar Bldg Coral Gables FL 33124 USA;

    NOAA Southeast Fisheries Sci Ctr Natl Marine Fisheries Serv 75 Virginia Beach Dr Miami FL 33149 USA;

    Univ Miami Rosenstiel Sch Marine & Atmospher Sci Undergrad Marine & Atmospher Sci Program 1365 Mem Dr 210 Ungar Bldg Coral Gables FL 33124 USA;

    Univ Miami Rosenstiel Sch Marine & Atmospher Sci Dept Marine Biol & Ecol 4600 Rickenbacker Causeway Miami FL 33149 USA;

    Univ Miami Rosenstiel Sch Marine & Atmospher Sci Undergrad Marine & Atmospher Sci Program 1365 Mem Dr 210 Ungar Bldg Coral Gables FL 33124 USA;

    Nova Southeastern Univ Guy Harvey Oceanog Ctr Dept Marine & Environm Sci Halmos Coll Nat Sci & Oceanog 8000 N Ocean Dr Dania FL 33004 USA;

    Nova Southeastern Univ Guy Harvey Oceanog Ctr Dept Marine & Environm Sci Halmos Coll Nat Sci & Oceanog 8000 N Ocean Dr Dania FL 33004 USA;

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