Abstract

The Upper Gulf of California is a diverse and highly productive ecosystem supporting some of the most important fisheries in Mexico, yet a history of weak fisheries management and illegal fishing threaten the area’s biodiversity and undermine human well-being in the communities along its shores. The vaquita (Phocoena sinus) is endemic to these waters and is on the brink of extinction due to incidental entanglement in gillnets used by small-scale fishers. The resurgence of an illegal gillnet fishery for totoaba (Totoaba macdonaldi), whose swim bladders are highly prized in Hong Kong and continental China, has accelerated the steep decline of the vaquita population. Vaquita is one of a growing number of cases linking illegal wildlife trade, organized crime, and biodiversity decline. This paper provides a summary of key reflections of a panel of fisheries economists gathered at the ninth forum of the North American Association of Fisheries Economists (NAAFE) to evaluate the policies implemented in the Upper Gulf through an economic lens and updated to reflect more recent developments. The panel recognized that poor fisheries management, lack of effective enforcement, distant demand for an illegal product, corruption, and few viable economic alternatives confound efforts to address vaquita bycatch. The complexity of these problems requires a holistic, multidisciplinary approach, combining top-down, direct regulation and bottom-up, participatory and incentive-based instruments. Addressing chronic deficiencies in enforcement, particularly in the very small area where the remaining vaquitas are found, is crucial to prevent imminent extinction. Equally crucial are sustained actions to support legal fishers able to make a good living – with a direct stake in healthy marine ecosystems – as key components of policies to address bycatch and reduce wildlife trafficking. The situation in the Upper Gulf of California is dire, yet similar threats to other marine mammals and wildlife trafficked species may benefit from the experience of the vaquita.

Highlights

  • Mexico’s endemic porpoise, the vaquita (Phocoena sinus), is the world’s most critically endangered marine mammal (International Union for the Conservation of Nature [IUCN], 2020b)

  • This paper provides a brief history of the government policies applied in the region, followed by a review of socio-economic instruments and impacts, both intended and unintended

  • Most of this paper addresses this fourth period, which featured a variety of policy instruments designed to reduce or eliminate gillnets in vaquita habitat and to compensate fishers for lost fishing income through economic instruments such as buyouts and other monetary compensation programs

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Summary

Introduction

Mexico’s endemic porpoise, the vaquita (Phocoena sinus), is the world’s most critically endangered marine mammal (International Union for the Conservation of Nature [IUCN], 2020b). Gillnets are used to harvest several high value species: blue shrimp (Litopenaeus stylirostris) and brown shrimp (Farfantepenaeus californianus) from September to March; Gulf corvina (Cynoscion othonopterus) in March and April; and sharks, rays, and several kinds of finfish, such as bigeye croaker (Micropogonias megalops) and Spanish mackerel (Scomberomorus concolor) from February to June (CudneyBueno and Turk-Boyer, 1998; Erisman et al, 2015) These fisheries are major contributors of income, employment, and food security in the coastal communities and provide a strong sense of cultural identity and social relevance (Lluch-Cota et al, 2007). The level of fishing effort in 2015 reflects the impacts of policies analyzed in this paper

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