First mass stranding of Risso's dolphins ( Grampus griseus) in Peru and its destiny as food and bait

García-Godos, Ignacio; Cardich, Carolina

doi:10.1017/s1755267209991084

Cited by 11 publications

(3 citation statements)

References 5 publications

(5 reference statements)

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“…The annual catch estimate increased in the 2000s as products from harpooned and bycaught dolphins were also sold in local food markets and consumed onboard fishing vessels or at home. The use as bait has rapidly expanded and incidental and directed catches still occur (Tzika et al, 2010), as well as butchering of live stranded animals (García-Godos and Cardich, 2010).…”

Section: South Americamentioning

confidence: 99%

The Utilization of Aquatic Bushmeat from Small Cetaceans and Manatees in South America and West Africa

Cosentino¹,

Fisher

2016

Front. Mar. Sci.

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Aquatic bushmeat can be defined as the products derived from wild aquatic megafauna (e.g., marine mammals) that are used for human consumption and non-food purposes, including traditional medicine. It is obtained through illegal or unregulated hunts as well as from stranded (dead or alive) and bycaught animals. In most South American and West African countries aquatic mammals are or have been taken for bushmeat, including 33 small cetaceans and all three manatee species. Of these, two cetacean species are listed in the IUCN red list as "near threatened," and one as "vulnerable," as are all manatee species. Additionally, 22 cetacean species are listed as "data deficient," hence some of these species may also be at risk. No reports (recent or otherwise) were found for some countries, caution is needed in concluding that aquatic bushmeat is not utilized in these nations. Moreover, although aquatic bushmeat is mostly obtained opportunistically and was likely originally taken only for local consumption, directed catches occur in most countries and may have reached unsustainable levels in some areas. For example, in Peru and Nigeria, thousands of small cetaceans are illegally hunted annually. Reliable, recent data and a better overall understanding of the drivers of aquatic bushmeat will be essential in the development of effective mitigation measures.

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Section: South Americamentioning

confidence: 99%

The Utilization of Aquatic Bushmeat from Small Cetaceans and Manatees in South America and West Africa

Cosentino¹,

Fisher

2016

Front. Mar. Sci.

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“…The opportunistic use of bycaught or directly killed dolphins and porpoises for bait in some SSF (e.g. shark-longlining/gillneting, crab-fishing with traps) has been reported for several countries in LAC, involving both coastal and offshore species: Argentina (Goodall et al, 1994); Brazil (Crespo et al, 2010b;Di Beneditto et al, 1998;Leatherwood and Reeves, 1994b;Secchi et al, 2003a); Chile (Lescrauwaet and Gibbons, 1994); Colombia (Avila et al, 2008;Mora-Pinto et al, 1995); Mexico, Central America and the wider Caribbean (Vidal et al, 1994); Peru (García-Godos and Cardich, 2011;Mangel et al, 2010;Read et al, 1988;Van Waerebeek et al, 1997). The current, non-traditional use of small cetaceans for bait in SSF in developing countries is pirarucu (Arapaima gigas); the tambaqui (Colossoma macropomum); and large migratory catfishes (Pimelodidae).…”

Section: Introductionmentioning

confidence: 99%

Insights on the use of dolphins (boto, Inia geoffrensis and tucuxi, Sotalia fluviatilis) for bait in the piracatinga (Calophysus macropterus) fishery in the western Brazilian Amazon

Iriarte¹,

Marmontel²

2023

JCRM

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In the Amazon Basin, the use of the pink dolphin or boto (Inia geoffrensis) for bait in the piracatinga (Calophysus macropterus) fishery was first detected in the year 2000. Since then, this artisanal fishery has become more prevalent as it requires only a few hours of work per night and provides immediate cash earnings. It is thus an attractive addition to (or replacement for) traditional fishing. Previous reports have noted the use of botos as bait, but stated that the most common bait used are caimans (Melanosuchus niger, Caiman crocodilus). Estimates of the number of dolphins killed based on fish landings have been proposed and an apparent decrease in sighting/survival of an artificially-marked boto population was observed. Although stocks/population estimates, trends and actual numbers of hunted dolphins are unknown, the conservation impacts of this activity are of concern. Between October 2010 and November 2011, research was conducted within an area with serious conflicts between dolphins and fishermen as well as intense fishing for piracatinga, i.e. in the lower Japurá River, on the border with the Mamirauá and Amanã Sustainable Development Reserves, where both boto and tucuxi (Sotalia fluviatilis) are used for bait. One-hundred and fifty-seven monitoring surveys were carried out in eight key communities, confirming 114 piracatinga fishing events through direct monitoring and incognito surveys of fishing gear (gaiolas). Empirical evidence of the activity in gaiolas comprised pieces of bait, carcass remains, piracatinga provoked vomits and dolphin fished carcasses. Of those, 31.2% (n = 35) involved cetacean bait (91.4% I. geoffrensis, 8.58% S. fluviatilis), 68.7% (n = 77) caiman bait (96% M. niger, 4% C. crocodilus), and two fishing events used both types. These percentages may be higher/lower in other areas within and outside the Reserves. Given the increasing trend of the piracatinga fishery, the authors believe that precautionary measures for the conservation of Amazonian dolphins are urgently needed. Development of practical short-term solutions (e.g. offal-baited fish traps) and multispecies management together with law enforcement, incentives and educational programmes could allow the future transition of riverine communities from the piracatinga fishery to sustainable, higher income activities.

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“…The majority of strandings are related to adverse weather or tidal conditions and generally involve sedentary benthic organisms which occupy the intertidal and subtidal zones of the shore (O'Brien et al, 1986). Of greater interest for researchers and the general public are occasions when apparently healthy animals such as whales and dolphins (Podesta et al, 2006;García-Godos & Cardich, 2010;Amaha et al, 2011), squid (Nolan et al, 1998;Mazzillo et al, 2011), sea turtles (Chaloupka et al, 2008), lobster and fish (Scotto di Carlo et al, 1982;Beckley et al, 1997;Gárate-Lizárraga et al, 2007a, 2007bHalford & Perret, 2009;Speed et al, 2009) are washed ashore.…”

mentioning

confidence: 99%

Mass stranding of fish in the Cape region of the Gulf of California

Cruz‐Agüero

Gárate-Lizárraga

Tiburcio-Pintos³

et al. 2012

Mar. Biodivers. Rec.

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A mass stranding of several species of teleostean fish occurred on the south-eastern beaches of Los Cabos on Mexicós Baja California peninsula between 16 and 21 June 2011. At least 22 species belonging to 17 families, an estimated 50 t, were stranded along 43.5 km of beach from 9 km north-west of the Cabo San Lucas harbour (22854 ′ 54.06 ′′ N-109850 ′ 07.45 ′′ W) to Playa San Luis (23810 ′ 41.78 ′′ N-109828 ′ 39.49 ′′ W). Stranding of fish was attributed to a bloom of the photosynthetic planktonic ciliate Myrionecta rubra by local health authorities; however the information derived from necropsies was not available to the authors, so other causes cannot be excluded.

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First mass stranding of Risso's dolphins ( Grampus griseus) in Peru and its destiny as food and bait

Cited by 11 publications

References 5 publications

The Utilization of Aquatic Bushmeat from Small Cetaceans and Manatees in South America and West Africa

The Utilization of Aquatic Bushmeat from Small Cetaceans and Manatees in South America and West Africa

Insights on the use of dolphins (boto, Inia geoffrensis and tucuxi, Sotalia fluviatilis) for bait in the piracatinga (Calophysus macropterus) fishery in the western Brazilian Amazon

Mass stranding of fish in the Cape region of the Gulf of California

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