Tursiops aduncus | Red List of Bangladesh Volume 2: Mammals

Taxa
Tursiops aduncus | (Ehrenberg, 1833)
Publication
Red List of Bangladesh Volume 2: Mammals
NRL Record ID
327633
Location
Countries in Assessment
Bangladesh
Country ISO code(s)
BGD
Does the assessment cover a marine EEZ area(s)?
Off
Scope (Assessment)
National
Taxon
Taxonomic Group
Vertebrates
Taxonomic Group Level 2
Mammals
Assessed taxon level
Species
Taxonomic Notes
Based on concordance in genetics, osteology, and external morphology, Tursiops aduncus is reported as taxonomically distinct (Wang et al. 1999, 2000 a, b).
Taxon distribution as listed in assessment
The distribution of Tursiops aduncus is patchy, widespread along the eastern coast of Africa, through the Red Sea and Persian Gulf, eastwards as far as Taiwan and southeastward to coastal waters of Australia (Curry and Smith 1997, Möller and Beheregaray 2001, Wells and Scott 2002, Culik 2011). It is restricted to the Swatch of No-ground, offshore and near shore marine habitats in the Bay of Bengal.
Habitats and Ecology
Ecological system type
Terrestrial system
No
Freshwater system
No
Marine system
No
Habitat
Habitat details as listed in assessment
This dolphin inhabits coastal, pelagic and marine waters of the Bay of Bengal. Very social and occurred up to 200 animals in one group. Forage over reefs or soft bottom substrata and near the shore. It moves from coastal water to the deep marine water and vice versa. Mostly breeds during December to March.
Is there a map available in assessment?
Yes, in the publication/on website
Assessed status
Asessment status in full
Near Threatened
Assessment status abreviation
NT
Assessment rationale/justification
A population of 2,239 individuals of Tursiops aduncus has been estimated by Mansur et al. 2011 in the northern tip of Swatch of No-ground in the Bay of Bengal and there were also few sightings recorded outside of Swtach of No ground in the Bay of Bengal. Both the Extent of Occurrence and Area of Occupancy were much larger than the thresholds level of threatened categories. Moreover, no decline in the species population was found. Thus, it has been categorized as Least Concern.
About the assessment
Assessment year
2015
Assessors/contributors/reviewers listed
Md. Zahangir Alom
Affliation of assessor(s)/contributors/reviewers listed on assessment
NGO
Academic
Assessor affiliation specific
Academic|NGO
Criteria system
Criteria system specifics
IUCN v3.1 + Regional Guidelines v4.0
Criteria system used
IUCN
Criteria Citation
IUCN (2012) IUCN Red List Categories and Criteria: Version 3.1. Second edition. Gland, Switzerland and Cambridge, UK: IUCN. iv + 32pp; IUCN (2012) Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
URL (link) of redlist assessment or publication
http://iucnredlistbd.org/
Endemism
Endemic to region
No
Endemism Notes
Is an endemic?: No
Conservation
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Further information
History
Not assessed (IUCN Bangladesh 2000).
Scientific Name Kingdom Phylum Class Order Family Genus
Tursiops aduncus Animalia Chordata Mammalia Cetartiodactyla Delphinidae Tursiops