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Providing evidence to improve practice

Action: Tag species to prevent illegal fishing or harvesting Subtidal Benthic Invertebrate Conservation

Key messages

Read our guidance on Key messages before continuing

  • One study examined the effects of tagging species to prevent illegal fishing or harvesting on subtidal benthic invertebrates. The study examined the effects on the Californian abalone fishery (USA).

 

COMMUNITY RESPONSE (0 STUDIES)

POPULATION RESPONSE (0 STUDIES)

BEHAVIOURS (1 STUDY)

  • Behaviour-change (1 study): One before-and-after study in California found no significant reduction in non-compliance with daily quotas of abalones after introducing tagging regulations.

OTHER (1 STUDY)

  • Illegal catch (1 study): One before-and-after study in California found no significant reduction in illegal takes of abalones after introducing tagging regulations.

Supporting evidence from individual studies

1 

A before-and-after study in 2007 and 2011 of fishers surveyed across 11 sites in northern California, USA (Lewis 2015) found that introducing tagging regulation did not reduce overall illegal takes of red abalone Haliotis rufescens. Tagging led to a 4% reduction in illegal takes of abalone, but this was not statistically significant. Of the seven categories of illegal takes considered, only non-compliance with daily-take quotas significantly reduced (before tagging: 32%; after tagging: 19%), particularly amongst local fishers (before: 72%; after: 43%). The other six categories were not significantly reduced (see paper for details). Red abalone tagging regulation was introduced in California between 2007 and 2011 (date unspecified). Over five weeks in August–September 2007 and 2011, fishers at 11 sites where abalone harvest is restricted were asked to respond to a set questionnaire regarding their compliance to each of seven regulations. Proportional non-compliance across fishers was estimated for each regulation and overall.

Referenced papers

Please cite as:

Lemasson, A.J., Pettit, L.R., Smith, R.K., and Sutherland, W.J. (2019) Subtidal Benthic Invertebrate Conservation: Global Evidence for the Effects of Interventions. Synopses of Conservation Evidence Series. University of Cambridge, Cambridge, UK.