The endangered status of dugongs<i>Dugong dugon</i>around Mayotte (East Africa, Mozambique Channel) assessed through interview surveys

Pusineri, Claire; Kiszka, Jérémy J.; Quillard, Mireille; Caceres, Sarah

doi:10.2989/1814232x.2013.783234

Cited by 13 publications

(11 citation statements)

References 18 publications

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“…Catches, mostly incidental, have been documented in the Comoros and Mayotte (Kiszka et al 2007(Kiszka et al , 2010Poonian et al 2008;Pusineri et al 2013;Pusineri and Quillard 2008), Zanzibar and Tanzania (Amir 2010;Amir et al 2002;Muir and Kiszka 2012), Kenya (Kiszka 2012), Madagascar (Cerchio et al 2009;Razafindrakoto et al 2004Razafindrakoto et al , 2008, Mozambique (Guissamulo and Cockcroft 1997;Kiszka 2012) and La Réunion ). To date no marine mammal catch has been reported in Mauritius or the Seychelles ).…”

Section: Marine Mammal Interaction With Small-scale Fisheriesmentioning

confidence: 99%

Marine megafauna interactions with small-scale fisheries in the southwestern Indian Ocean: a review of status and challenges for research and management

Temple

Kiszka

Stead

et al. 2017

Rev Fish Biol Fisheries

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In developing regions, coastal communities are particularly dependent on small-scale fisheries for food security and income. However, information on the scale and impacts of small-scale fisheries on coastal marine ecosystems are frequently lacking. Large marine vertebrates (marine mammals, sea turtles and chondrichthyans) are often among the first species to experience declines due to fisheries. This paper reviews the interactions between small-scale fisheries and vulnerable marine megafauna in the southwestern Indian Ocean. We highlight an urgent need for proper documentation, monitoring and assessment at the regional level of small-scale fisheries and the megafauna affected by them to inform evidence-based fisheries management. Catch and landings data are generally of poor quality and resolution with compositional data, where available, mostly anecdotal or heavily biased towards easily identifiable species. There is also limited understanding of fisheries effort, most of which relies on metrics unsuitable for proper assessment. Management strategies (where they exist) are often created without strong evidence bases or understanding of the reliance of fishers on resources. Consequently, it is not possible to effectively assess the current status and ensure the sustainability of these species groups; with indications 123Rev Fish Biol Fisheries (2018Fisheries ( ) 28:89-115 https://doi.org/10.1007 of overexploitation in several areas. To address these issues, a regionally collaborative approach between government and non-governmental organisations, independent researchers and institutions, and smallscale fisheries stakeholders is required. In combination with good governance practices, appropriate and effective, evidence-based management can be formulated to sustain these resources, the marine ecosystems they are intrinsically linked to and the livelihoods of coastal communities that are tied to them.

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Section: Marine Mammal Interaction With Small-scale Fisheriesmentioning

confidence: 99%

Marine megafauna interactions with small-scale fisheries in the southwestern Indian Ocean: a review of status and challenges for research and management

Temple

Kiszka

Stead

et al. 2017

Rev Fish Biol Fisheries

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“…Recent studies of dugongs Dugong dugon on the same site show that the species is close to extirpation (Pusineri et al 2013). In order to prevent a similar decline of Mayotte Indo-Pacific bottlenose dolphins, we should first implement management measures to impede further degradation of dolphin habitats (e.g.…”

Section: Conservationmentioning

confidence: 99%

Capture-mark-recapture modelling suggests an Endangered status for the Mayotte Island (eastern Africa) population of Indo-Pacific bottlenose dolphins

Pusineri¹,

Barbraud²,

Kiszka³

et al. 2014

Endang. Species. Res.

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We evaluated whether the Indo-Pacific bottlenose dolphins around the fast-developing island of Mayotte are threatened. We used opportunistic photo-identification data and capture-mark-recapture models to estimate key demographic parameters and then assessed the conservation status of the species using the IUCN Red List regional criteria. The population home range was estimated with the minimum convex polygon method as 978 km 2 , the annual abundance was estimated from closed population models as 82 ±19 SE individuals and the annual survival rate was estimated using a Cormack-Jolly-Seber model as 0.937 ± 0.059 SE. From the data available, we believe migrations of individuals between Mayotte and its neighbouring islands are likely but would not exceed a few individuals per year. Based on IUCN guidelines for classification at local scales, we classified Indo-Pacific bottlenose dolphins around Mayotte as Endangered. We strongly recommend the establishment of a long-term population-monitoring program and the implementation of management measures.

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“…Through the engagement of local stakeholders in population assessments, Local Ecological Knowledge (LEK) has proved a valuable resource to investigate population ecology in fellow sirenians; the Amazonian manatee Trichechus inunguis (Franzini et al, 2013;Sousa et al, 2013), Antillean manatee Trichechus manatus (Arevalo-Gonzalez et al, 2014) and West African manatee Trichechus senegalensis (Mayaka et al, 2013). LEK has also been used to examine the presence of D. dugon populations across their range in developing countries such as Malaysia (Rajamani, 2013;Rojchanaprasart et al, 2014), Myanmar (Ilangakoon and Tun, 2007) and Mayotte Island (Pusineri et al, 2013). However, there remain extensive areas within the known distribution of dugongs where population data is lacking.…”

Section: Discussionmentioning

confidence: 99%

Reasons for seagrass optimism: Local ecological knowledge confirms presence of dugongs

Cullen-Unsworth

Jones

Seary

et al. 2018

Marine Pollution Bulletin

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Dugongs (Dugong dugon) depend on seagrass meadows for food. As such seagrass and dugong conservation should go hand in hand. Assessing dugong populations is notoriously challenging. In the most resource dependent communities Local Ecological Knowledge (LEK) is generally high and can provide an alternative to the use of expensive ecological surveys to understand dugong populations and support associated resource management decisions. Residents of the Wakatobi National Park (WNP), SE Sulawesi, Indonesia are highly dependent on marine resources for livelihoods and correspondingly LEK is high. Here LEK documents the presence of D. dugon in the WNP and infers changes in population size. Interviews with local residents in 2012-2013 revealed 99 sightings of dugongs since 1942, 48 of which occurred between 2002 and 2012, with 79.82% of respondents having seen a dugong. Declines in the frequency of sightings within the lifetime of several respondents were reported, respondents speculating that populations are reduced. This information can guide further cooperative research and conservation efforts for the protection of a vulnerable species and the seagrass habitat on which it depends.

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The endangered status of dugongsDugong dugonaround Mayotte (East Africa, Mozambique Channel) assessed through interview surveys

Cited by 13 publications

References 18 publications

Marine megafauna interactions with small-scale fisheries in the southwestern Indian Ocean: a review of status and challenges for research and management

Marine megafauna interactions with small-scale fisheries in the southwestern Indian Ocean: a review of status and challenges for research and management

Capture-mark-recapture modelling suggests an Endangered status for the Mayotte Island (eastern Africa) population of Indo-Pacific bottlenose dolphins

Reasons for seagrass optimism: Local ecological knowledge confirms presence of dugongs

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