Edy Setyawan
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View article: First Evidence of Neonatal Whale Sharks (Rhincodon typus) in Saleh Bay, West Nusa Tenggara, Indonesia
First Evidence of Neonatal Whale Sharks (Rhincodon typus) in Saleh Bay, West Nusa Tenggara, Indonesia Open
The reproductive biology of the whale shark (Rhincodon typus), the world’s largest fish, remains poorly understood, in large part due to the rarity of observations of neonates and of breeding behaviours. Although several regions in Indones…
View article: Movement ecology and foraging behaviours of oceanic manta rays <i>Mobula birostris</i> in the coastal waters of Aotearoa, New Zealand
Movement ecology and foraging behaviours of oceanic manta rays <i>Mobula birostris</i> in the coastal waters of Aotearoa, New Zealand Open
Understanding the movements and associated behaviours of animals is critical for informed management decisions. This is particularly important for species such as the Endangered oceanic manta ray (Mobula birostris), which has a conservativ…
View article: Spatio-temporal patterns, trends, and oceanographic drivers of whale shark strandings in Indonesia
Spatio-temporal patterns, trends, and oceanographic drivers of whale shark strandings in Indonesia Open
Despite the increased international attention to whale shark conservation, their populations remain predominantly depleted due to anthropogenic activities such as fishing, ship collisions, and marine pollution. Reports of whale shark stran…
View article: Insights into the population demographics and residency patterns of photo-identified whale sharks Rhincodon typus in the Bird’s Head Seascape, Indonesia
Insights into the population demographics and residency patterns of photo-identified whale sharks Rhincodon typus in the Bird’s Head Seascape, Indonesia Open
The whale shark ( Rhincodon typus ) is an iconic species in the Bird’s Head Seascape (BHS) in eastern Indonesia, yet little is known about its population and residency patterns across the region. This study documents the population demogra…
View article: Staying Close to Home: Horizontal Movements of Satellite-Tracked Reef Manta Rays Mobula alfredi (Krefft, 1868) in the World’s Largest Manta Sanctuary
Staying Close to Home: Horizontal Movements of Satellite-Tracked Reef Manta Rays Mobula alfredi (Krefft, 1868) in the World’s Largest Manta Sanctuary Open
Indonesia is home to significant populations of globally vulnerable reef manta rays (Mobula alfredi) in at least four key regions: Berau, Nusa Penida, Komodo, and Raja Ampat. Despite detailed population studies in each of these regions, li…
View article: Insights into cetacean sightings, abundance, and feeding associations: observations from the boat lift net fishery in the Kaimana important marine mammal area, Indonesia
Insights into cetacean sightings, abundance, and feeding associations: observations from the boat lift net fishery in the Kaimana important marine mammal area, Indonesia Open
A comprehensive understanding of cetacean ecology is crucial for conservation and management. In 2018, Kaimana was identified as an Important Marine Mammal Area (IMMA) due to the regular presence of feeding aggregations of Australian humpb…
View article: Insights into the visitations of oceanic manta rays at cleaning stations on coral reefs in the Bird's Head Seascape, eastern Indonesia
Insights into the visitations of oceanic manta rays at cleaning stations on coral reefs in the Bird's Head Seascape, eastern Indonesia Open
The globally endangered oceanic manta ray Mobula birostris is believed to spend significantly more time in the open ocean than in coastal areas. Nonetheless, the Bird's Head Seascape (BHS) in eastern Indonesia hosts a large population of t…
View article: The first record of the southbound movements of satellite‐tagged pygmy blue whales (<i>B. m. brevicauda</i>) from Savu Sea (Indonesia) to the subantarctic waters
The first record of the southbound movements of satellite‐tagged pygmy blue whales (<i>B. m. brevicauda</i>) from Savu Sea (Indonesia) to the subantarctic waters Open
[Extract] Pygmy blue whales (Balaenoptera musculus brevicauda) are known to conduct annual migrations between the southern and western waters of Australia to the Banda Sea via the Savu Sea in Indonesia (Double et al., 2014; Möller et al., …
View article: First Documented Courtship Behavior between Mobula birostris and M. alfredi at a Coral Reef Cleaning Station in Misool, Raja Ampat
First Documented Courtship Behavior between Mobula birostris and M. alfredi at a Coral Reef Cleaning Station in Misool, Raja Ampat Open
Though a previous study in Sudan confirmed the existence of a living hybrid of an oceanic manta ray (Mobula birostris) and a reef manta ray (M. alfredi), courtship behaviors between the two closely related species have never been documente…
View article: Identifying spatial movements and residency of pelagic thresher sharks (Alopias pelagicus) using satellite and passive acoustic telemetry to inform local conservation in central Indonesia
Identifying spatial movements and residency of pelagic thresher sharks (Alopias pelagicus) using satellite and passive acoustic telemetry to inform local conservation in central Indonesia Open
The pelagic thresher shark ( Alopias pelagicus ) is globally endangered, threatened by bycatch, and targeted in industrial and artisanal fisheries in Indonesia. However, a lack of information about their ecology, particularly movement and …
View article: Spatial connectivity of reef manta rays across the Raja Ampat archipelago, Indonesia
Spatial connectivity of reef manta rays across the Raja Ampat archipelago, Indonesia Open
The reef manta ray Mobula alfredi is present throughout most island groups that form the Raja Ampat archipelago, Indonesia. The species is protected regionally and nationally and is currently managed as a single homogeneous population with…
View article: Population estimates of photo-identified individuals using a modified POPAN model reveal that Raja Ampat’s reef manta rays are thriving
Population estimates of photo-identified individuals using a modified POPAN model reveal that Raja Ampat’s reef manta rays are thriving Open
The 6.7-million-hectare Raja Ampat archipelago is home to Indonesia’s largest reef manta ray ( Mobula alfredi ) population and a representative network of nine marine protected areas (MPAs). However, the population dynamics of M. alfredi i…
View article: A global atlas of potential thermal refugia for coral reefs generated by internal gravity waves
A global atlas of potential thermal refugia for coral reefs generated by internal gravity waves Open
Coral reefs are highly threatened by ocean warming and the majority are likely to be lost in less than three decades. A first step in maximizing reef conservation through this period is to identify where coral reefs are more likely to surv…
View article: Residency and Use of an Important Nursery Habitat, Raja Ampat’s Wayag Lagoon, by Juvenile Reef Manta Rays (Mobula alfredi)
Residency and Use of an Important Nursery Habitat, Raja Ampat’s Wayag Lagoon, by Juvenile Reef Manta Rays (Mobula alfredi) Open
The behaviour and spatial use patterns of juvenile manta rays within their critical nursery habitats remain largely undocumented. Here, we report on the horizontal movements and residency of juvenile reef manta rays ( Mobula alfredi ) at a…
View article: How Big Is That Manta Ray? A Novel and Non-Invasive Method for Measuring Reef Manta Rays Using Small Drones
How Big Is That Manta Ray? A Novel and Non-Invasive Method for Measuring Reef Manta Rays Using Small Drones Open
This study explores the application of small, commercially available drones to determine morphometric the measurements and record key demographic parameters of reef manta rays (Mobula alfredi) in Raja Ampat, Indonesia. DJI Mavic 2 Pro dron…
View article: Natural history of manta rays in the Bird's Head Seascape, Indonesia, with an analysis of the demography and spatial ecology of Mobula alfredi (Elasmobranchii: Mobulidae)
Natural history of manta rays in the Bird's Head Seascape, Indonesia, with an analysis of the demography and spatial ecology of Mobula alfredi (Elasmobranchii: Mobulidae) Open
The Bird’s Head Seascape (BHS) in West Papua, Indonesia, is widely recognized as the global epicenter of coral reef biodiversity and is protected by an extensive network of 20 marine protected areas (MPAs) totaling over 4.7 million ha. It …
View article: Population dynamics of oceanic manta rays (<i>Mobula birostris</i>) in the Raja Ampat Archipelago, West Papua, Indonesia, and the impacts of the El Niño–Southern Oscillation on their movement ecology
Population dynamics of oceanic manta rays (<i>Mobula birostris</i>) in the Raja Ampat Archipelago, West Papua, Indonesia, and the impacts of the El Niño–Southern Oscillation on their movement ecology Open
Aim Our aim was to collect sightings data on oceanic manta rays ( Mobula birostris ) within the Raja Ampat Archipelago to better understand their population dynamics within the region. These data were compared with environmental variables …
View article: Correcting for missing and irregular data in home‐range estimation
Correcting for missing and irregular data in home‐range estimation Open
Home‐range estimation is an important application of animal tracking data that is frequently complicated by autocorrelation, sampling irregularity, and small effective sample sizes. We introduce a novel, optimal weighting method that accou…
View article: Data from: Correcting for missing and irregular data in home-range estimation
Data from: Correcting for missing and irregular data in home-range estimation Open
Home-range estimation is an important application of animal tracking data that is frequently complicated by autocorrelation, sampling irregularity, and small effective sample sizes. We introduce a novel, optimal weighting method that accou…
View article: Site fidelity and movement patterns of reef manta rays (Mobula alfredi: Mobulidae) using passive acoustic telemetry in northern Raja Ampat, Indonesia
Site fidelity and movement patterns of reef manta rays (Mobula alfredi: Mobulidae) using passive acoustic telemetry in northern Raja Ampat, Indonesia Open
Though extremely valuable to the local marine tourism industry, there is a dearth of published information on the ecology and population dynamics of reef manta rays (Mobula alfredi) in Raja Ampat, West Papua, Indonesia. Knowledge of the mo…
View article: State of the Sunda Banda Seascape Marine Protected Area Network - 2017, Summary Report
State of the Sunda Banda Seascape Marine Protected Area Network - 2017, Summary Report Open
The Sunda Banda Seascape (SBS) in Indonesia’s Coral Triangle is considered one of the top priority marine ecoregions for conservation by the Indonesian government. The region is divided into three subseascapes, which includes the Lesser Su…
View article: Large-scale movement and habitat range of reef manta ( Manta alfredi ) in northern Raja Ampat waters, West Papua, Indonesia
Large-scale movement and habitat range of reef manta ( Manta alfredi ) in northern Raja Ampat waters, West Papua, Indonesia Open
Little is known about the habitat range and seasonal distribution of reef mantas in Raja Ampat, West Papua. The objectives of this study were to investigate the habitat range and to examine spatial and temporal movements of reef mantas for…