Fishing bait worm supplies in Japan in relation to their physiological traits

Saito, Hidetoshi; Kawai, Kazuhiro; Umino, Tetsuya; Imabayashi, Hiromichi

doi:10.24199/j.mmv.2014.71.21

Cited by 25 publications

(27 citation statements)

References 23 publications

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“…All 13 species were found to be collected in the wild. Moreover, Marphysa sanguinea (Montagu, 1813), and probably P. linea (according to an unreferenced statement in Saito et al, ), were also farmed (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…Fidalgo e Costa et al () had previously warned about the possible impact of the Korean ragworm [previously identified as Perinereis aibuhitensis (Grube, 1878)] on native species, after verifying its ability to reproduce in the range of environmental conditions prevailing in the coastal lagoons and estuaries of southern Portugal. A number of non‐native imported live baits, including polychaetes, have life cycles and growth rates that make them more suitable candidates for farming than other native bait worms (Saito, Kawai, Umino, & Imabayashi, ), but which also make them much more competitive than their native counterparts if released into the wild. The commercial benefits from introducing such species into the bait market can be very large, but the probability of accidental or intentional introductions into the wild are also high, either through the discharge of farm tank effluent or the direct use of live worms for bait (Fowler, ), posing a potential threat with unpredictable consequences to the new environment.…”

Section: Introductionmentioning

confidence: 99%

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The commercialization and use of exotic baits in recreational fisheries in the north‐western Mediterranean: Environmental and management implications

Font

Gil

Lloret

2018

Aquatic Conservation

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Although the use of exotic baits in recreational fisheries represents an increasing environmental threat for Mediterranean marine ecosystems, there is still little information about the commercialization and use of these baits, which makes it difficult to assess their potential impacts and establish specific management measures to tackle the threat that they pose. This study analyses for the first time the commercialization and use of exotic species in recreational fishing in the Mediterranean, and the associated environmental and management implications. A multiple‐approach design has been used, including: a participatory survey to collect data and perceptions from local retailers and a national bait wholesaler on the environmental impacts of exotic baits; a biological study to identify taxonomically the commercialized bait species; and a bibliographic survey to gather information about the potential environmental impacts of the commercialization and use of exotic baits. Results showed that, among the 13 different baits sold, only the polychaete group included three exotic species: Perinereis linea, Glycera dibranchiata, and Namalycastis rhodochorde. Furthermore, specimens of the sipunculid Sipunculus nudus, imported from South‐east Asia, should also be considered exotic. The exotic species P. linea and G. dibranchiata were the two polychaete species most often used by sea anglers. These species were also the most sold by local retailers in the area and by Spain's leading wholesaler. Overall, anglers and local retailers were not fully aware of the potential negative impacts derived from the use of exotic species, and therefore appropriate management actions, including awareness activities, are discussed to better understand and manage the environmental impacts derived from exotic baits.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The commercialization and use of exotic baits in recreational fisheries in the north‐western Mediterranean: Environmental and management implications

Font

Gil

Lloret

2018

Aquatic Conservation

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“…Saito et al . () recorded 17 different species from fishing stores and wholesalers in Japan in just over 3 years, but only five species were exclusively supplied from Japanese populations. However, gathering the appropriate quantity and quality of data for bait species fisheries is a significant undertaking.…”

Section: Management Methodsmentioning

confidence: 99%

“…Identification of the types of bait used (and their value through the supply chain) is also critical as the species used by sea anglers are diverse and country/region specific, but also not limited to populations from within national borders. Saito et al (2014) recorded 17 different species from fishing stores and wholesalers in Japan in just over 3 years, but only five species were exclusively supplied from Japanese populations. However, gathering the appropriate quantity and quality of data for bait species fisheries is a significant undertaking.…”

Section: Management Methodsmentioning

confidence: 99%

Bait worms: a valuable and important fishery with implications for fisheries and conservation management

et al. 2016

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Bait is an integral part of coastal life, but is perceived as a low‐value resource as fisheries are data‐limited, locally focussed and largely unregulated even though the ecological impacts of collection are considerable. An empirical assessment of three UK‐based ragworm fisheries combined with an analysis of published literature has produced the first global assessment of polychaete bait fisheries. The five most expensive (retail price per kg) marine species sold on the global fisheries market are polychaetes (Glycera dibranchiata, Diopatra aciculata, Nereis (Alitta) virens, Arenicola defodiens and Marphysa sanguinea). We estimate that 1600 t of N. virens per annum (worth £52 million) are landed in the UK with approximately 121 000 tonnes of polychaetes collected globally valued at £5.9 billion. Using remote closed circuit television (CCTV) cameras to monitor collectors, activity at local sites is considerable with a mean of 3.14 collectors per tide (day and night) at one site and individuals digging for up to 3 h per tide, although intensity differed seasonally and between sites. Collectors removed on average 1.4 kg of N. virens per person per hour, walking a considerable distance across the intertidal sediment to reach areas that were usually already dug. The implications of these human activity and biomass removal levels are explored in the context of fisheries and conservation management. At local, regional and national scales, polychaete bait fisheries are highly valuable, extract significant biomass and have considerable impacts; therefore, they urgently require governance equivalent to other fisheries.

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“…It is known that, for years, a significant percentage of recreational fishermen (approximately 40%) discarded the unused baitworms, wrapping seaweeds and their package into the water (Lau 1995). Thus, the probability of introducing non-indigenous species increased with this practice (Haska et al 2012;Saito et al 2014;S a et al 2017;Font et al 2018), especially because this likelihood is related not only to the number of individuals that are introduced (propagule pressure), but also to the number of release events (Allendorf & Lundquist 2003). This is of special concern when considering that the numbers regarding the importation of wild bait to European countries are not well known (Fowler 1999).…”

Section: Ecological Concernsmentioning

confidence: 99%

Insight into aquaculture's potential of marine annelid worms and ecological concerns: a review

Pombo

Baptista

Granada

et al. 2018

Reviews in Aquaculture

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Polychaetes are marine annelid worms that can contribute to aquaculture diversification. Its culture has been viable, and commercially attempted, but intensive production has progressed only in few countries around the world. In the countries with no production, marine polychaetes are imported or harvested. A strong and sustained research investment provided to a better understanding of the nutritional requirements and reproduction of some species. Recent studies showed new technical improvements, which can lead to an important progress in productivity and give a new impetus to the polychaete production. Some marine worm species were identified as good candidates for integrated multitrophic aquaculture. The development of cost‐effective aquaculture techniques for marine annelid worms is essential to ensure a balance between commercial interests and the preservation of ecosystems. The influence of polychaete aquaculture on the environment and vice versa raise important concerns related to ecological security and sustainability of this activity. This review focus on the main technical improvements and advances that have been made in areas as diverse as: aquaculture potential of polychaetes, reared species, main species used worldwide, and highlights biological and ecological concerns, important challenges and recommendations.

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Fishing bait worm supplies in Japan in relation to their physiological traits

Cited by 25 publications

References 23 publications

The commercialization and use of exotic baits in recreational fisheries in the north‐western Mediterranean: Environmental and management implications

The commercialization and use of exotic baits in recreational fisheries in the north‐western Mediterranean: Environmental and management implications

Bait worms: a valuable and important fishery with implications for fisheries and conservation management

Insight into aquaculture's potential of marine annelid worms and ecological concerns: a review

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