Scholarlink

<p>The sabellid polychaete <i>Terebrasabella heterouncinata</i> Fitzhugh and Rouse, 1999, originally from southern Africa, is an invasive species in temperate regions recorded for the first time in Mexico in 2023 infesting green (<i>Haliotis fulgens</i> Philippi) and red (<i>H. rufescens</i> Swainson) abalone reared under intensive conditions in recirculation aquaculture systems (RAS). In the 1980s, <i>T. heterouncinata</i> was accidentally introduced to California (USA) with the South African abalone <i>H. midae</i> Linnaeus to conduct research for commercial farming. The sabellid spread through abalone farming facilities reaching nearby intertidal zones. Some inadvertently infected red abalone were imported to Baja California (Mexico) from Californian farms for abalone research and cultivation in the 1990s, but there were still no reports of the species. This study deals with the early detection and removal of the sabellid in research-cultured abalone, assesses its prevalence and intensity in red and green abalone, and addresses its potential for introduction in Mexico. The worms inhabited tubes embedded within the host shell, its growing edge and around the respiratory pores, thus affecting shell uniformity, hardness, and aesthetics but not causing abalone deceasing. In one case, an abalone showed imperforated respiratory pores, indicating severe shell deformities. After carefully removing and cleaning, the polychaete was eliminated from the RAS facilities. Currently, <i>T. heterouncinata</i> is considered a significant pest of marine gastropods in the USA, Chile, Iceland, and South Africa. Green and red abalone hold a high ecological, cultural, and commercial value and are the primary species commercially cultivated in Baja California. Given the invasive potential of <i>T. heterouncinata</i>, which can affect the local abalone aquaculture and trade, its introduction has been prohibited in Mexico. The finding reported in this paper emphasises the need to evaluate the invasiveness, assess the potential environmental impact and propose strategies to reduce economic risks for the regional aquaculture industry.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Early detection warrants rapid response: the sabellid polychaete Terebrasabella heterouncinata in cultured abalone

  • 期刊论文

  • 发表日期：

    2025年1月20日

查看全文
  • Tulio F. Villalobos-Guerrero,
  • Fabiola Lafarga-De la Cruz,
  • María Ana Tovar-Hernández,
  • Victoria Díaz-Castañeda

摘要

The sabellid polychaete Terebrasabella heterouncinata Fitzhugh and Rouse, 1999, originally from southern Africa, is an invasive species in temperate regions recorded for the first time in Mexico in 2023 infesting green (Haliotis fulgens Philippi) and red (H. rufescens Swainson) abalone reared under intensive conditions in recirculation aquaculture systems (RAS). In the 1980s, T. heterouncinata was accidentally introduced to California (USA) with the South African abalone H. midae Linnaeus to conduct research for commercial farming. The sabellid spread through abalone farming facilities reaching nearby intertidal zones. Some inadvertently infected red abalone were imported to Baja California (Mexico) from Californian farms for abalone research and cultivation in the 1990s, but there were still no reports of the species. This study deals with the early detection and removal of the sabellid in research-cultured abalone, assesses its prevalence and intensity in red and green abalone, and addresses its potential for introduction in Mexico. The worms inhabited tubes embedded within the host shell, its growing edge and around the respiratory pores, thus affecting shell uniformity, hardness, and aesthetics but not causing abalone deceasing. In one case, an abalone showed imperforated respiratory pores, indicating severe shell deformities. After carefully removing and cleaning, the polychaete was eliminated from the RAS facilities. Currently, T. heterouncinata is considered a significant pest of marine gastropods in the USA, Chile, Iceland, and South Africa. Green and red abalone hold a high ecological, cultural, and commercial value and are the primary species commercially cultivated in Baja California. Given the invasive potential of T. heterouncinata, which can affect the local abalone aquaculture and trade, its introduction has been prohibited in Mexico. The finding reported in this paper emphasises the need to evaluate the invasiveness, assess the potential environmental impact and propose strategies to reduce economic risks for the regional aquaculture industry.