Staying Close to Home: Horizontal Movements of Satellite-Tracked Reef Manta Rays Mobula alfredi (Krefft, 1868) in the World’s Largest Manta Sanctuary DOI Creative Commons
Edy Setyawan, Abraham B. Sianipar,

Ronald Mambrasar

и другие.

Fishes, Год журнала: 2025, Номер 10(2), С. 66 - 66

Опубликована: Фев. 5, 2025

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 each these regions, little known about their horizontal movement patterns. Our study used satellite telemetry investigate rays’ habitat use ranges. A total 33 were tagged with SPLASH10F-321A tags across the Berau (n = 5), Penida 8), Komodo 6), Ampat 14), yielding usable data from 25 tags. The tracked for 7 118 days (mean ± SD 50 30) July 2014 2022. results showed localized movements, strong residency near tagging sites, high site fidelity as evidenced by area-restricted search (ARS) behaviors frequent revisitations. Most restricted ranges region, no connectivity between regions. Across individuals, range (95% utilization distributions) varied significantly, ranging 19 48,294 km2 4667 10,354). These findings offer important insights into spatial patterns Indonesia, allowing formulation more effective management strategies.

Язык: Английский

Preliminary insights into manta ray (Mobula alfredi and M. birostris) population demographics and distribution in South Africa DOI Creative Commons
Morgan Carpenter, Nakia Cullain, Ryan Daly

и другие.

Environmental Biology of Fishes, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Abstract Both the reef manta ray, Mobula alfredi and oceanic ray M. birostris , are repeatedly observed in South Africa, yet little is known about distributions of either species. In this study, we collated citizen science observations since 2003 to reveal six areas KwaZulu-Natal (KZN) Eastern Cape provinces, where rays have been sighted across multiple years. Using their unique ventral spot patterning, 184 individuals were photo-identified, comprising 139 45 . Most photo-identified encountered iSimangaliso Wetland Park (IWP) KZN (89%; n = 119) for Aliwal Shoal (48%; 22). We identified 32 new transboundary records 28 also photographed Inhambane Province, Mozambique, demonstrating connectivity, specifically Závora ( 27). One individual traveled times between IWP Závora, totaling 1305 km, another from Pondoland MPA a distance over 600 km. Further, extend southern range Africa by 500 km Mdumbi Beach Port Ngqura, Cape. These collective findings represent Africa’s first in-water assessment aggregations, showing particular be critical habitat movements documented here suggest population one most mobile globally. hope baseline data provided will drive increased research management along coastlines.

Язык: Английский

Процитировано

0
Staying Close to Home: Horizontal Movements of Satellite-Tracked Reef Manta Rays Mobula alfredi (Krefft, 1868) in the World’s Largest Manta Sanctuary DOI Creative Commons
Edy Setyawan, Abraham B. Sianipar,

Ronald Mambrasar

и другие.

Fishes, Год журнала: 2025, Номер 10(2), С. 66 - 66

Опубликована: Фев. 5, 2025

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 each these regions, little known about their horizontal movement patterns. Our study used satellite telemetry investigate rays’ habitat use ranges. A total 33 were tagged with SPLASH10F-321A tags across the Berau (n = 5), Penida 8), Komodo 6), Ampat 14), yielding usable data from 25 tags. The tracked for 7 118 days (mean ± SD 50 30) July 2014 2022. results showed localized movements, strong residency near tagging sites, high site fidelity as evidenced by area-restricted search (ARS) behaviors frequent revisitations. Most restricted ranges region, no connectivity between regions. Across individuals, range (95% utilization distributions) varied significantly, ranging 19 48,294 km2 4667 10,354). These findings offer important insights into spatial patterns Indonesia, allowing formulation more effective management strategies.

Язык: Английский

Процитировано

0