[MARMAM] New paper: Cosumption of Guiana dolphin (Sotalia guianensis) in Lake Maracaibo System, Venezuela

Yurasi Briceño yurasialejandra at gmail.com
Fri Feb 26 12:10:55 PST 2021


My co-authors and I are pleased to share our latest paper: Aquatic Wildmeat
Consumption of Guiana Dolphins (Sotalia guianensis) in Lake Maracaibo
System, Venezuela

It is available in:
https://www.frontiersin.org/articles/10.3389/fmars.2021.625801/full

Abstract:

In many regions of the world, the use of cetaceans as bait or protein
source has been reported. In most cases the individuals are from bycatch
but also from intentionally killed animals. Cetaceans with coastal habits
are more susceptible to negative interactions with small-scale fisheries,
as in the case of the Guiana dolphin (Sotalia guianensis) in the Lake
Maracaibo system. For decades, the use of Guiana dolphins by local
communities has been reported in this region and is culturally supported by
recipes for its preparation. Most of these data was outdated and some were
anecdotal, so the objective of this work was to collect systematically data
through surveys using the snowball method in seven artisanal fishing
communities and to try to quantify the capture rate and to inquire about
the potential impact of this practice on the population of Guiana dolphin.
>From 2017 to 2019, 95 semi-structured interviews were applied. An average
bycatch of 180 individuals/year was obtained, the highest catch rate in the
entire geographic distribution, an alarming situation considering that the
surveys were not carried out in all the fishing ports, generating an
underestimation. A total of 78% of interviewed recognized at least one
bycatch event during their fishing effort. Surveys revealed a higher
incidence of entanglement of offspring and juveniles (78%). 77% of the
respondents deny the sale and commercialization of the species, while 5%
mention some type of trade. The most frequent part exploited was the dorsal
muscle, confirmed by fishermen (97%, n = 72) and the rest of the animal is
discarded. During this investigation three episodes of directed capture
were recorded, affecting a total of 23 individuals, two of them were
pregnant females. The interviews also revealed that the majority of
fishermen (93%) recognize the capture of this species as illegal.
Considering the vulnerability of the Guiana dolphin in the country, the
high incidence of capture and consumption and the lack of surveillance and
sanctions by government entities, it is imperative to immediate actions to
mitigate the negative impact on the population.

All the best,

Yurasi

-- 

*PhD. (C) Yurasi Briceño*

*@proyectosotalia*Universidad del Zulia.
Centro de Ecología.
Instituto Venezolano de Investigaciones Científicas (IVIC),
Carretera Panamericana, km 11 Altos de Pipe, Apartado postal 20632,
Caracas1020-A, Estado Miranda - VENEZUELA

Tlf: (58)(212)5041905
Mobile: (58)(412)5553962
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