Incidence of pregnant endangered devil rays (Elasmobranchii: Mobulidae) from the Gulf of Mannar and Palk Bay, southeast coast of India.
Saved in:
| Title: | Incidence of pregnant endangered devil rays (Elasmobranchii: Mobulidae) from the Gulf of Mannar and Palk Bay, southeast coast of India. |
|---|---|
| Authors: | Remya, L.1 lremya9@gmail.com, Thomas, Sujitha2, Muktha, M.3, Kizhakudan, Shoba Joe1 |
| Source: | Current Science (00113891). 8/25/2025, Vol. 129 Issue 4, p362-369. 8p. |
| Subjects: | Mobulidae, Mating grounds, Endangered species, Anthropogenic effects on nature, Life history theory |
| Geographic Terms: | Gulf of Mannar, India |
| Abstract: | Out of the nine valid extant mobulid species confirmed globally, seven have been reported in India. All mobulids are vulnerable due to anthropogenic pressure, i.e. commercial fisheries, for their gill plates, which are traded on the international market. Information on their reproductive biology including, the seasons of mating, pupping, and nursery grounds are still largely unknown from Indian waters. The present study reports the occurrence of pregnant endangered devil rays, longhorned pygmy devil ray Mobula eregoodoo, oceanic manta ray Mobula birostris and Bentfin devil ray Mobula thurstoni in Indian waters, off the southeast coast. All three species were observed to have a single pup each. Our observations of mobulid catch from 2020 to 2022 indicates a predictable occurrence of pregnant devil rays either for feeding or for pupping (July to November), with a peak during November in the Gulf of Mannar and Palk Bay. The size-atbirth was in the order of 33.3 cm disc width (DW), 125.8 cm DW and 40.5-60.5 cm DW for M. eregoodoo, M. birostris and M. thurstoni respectively. Mobula thurstoni chiefly consumed needle squid and Acetes spp., while the gut contents of the other two species were completely digested. The observations on M. thurstoni suggests a pupping/nursery/feeding ground off the Gulf of Mannar, probably assist to develop area-based management interventions. [ABSTRACT FROM AUTHOR] |
| Copyright of Current Science (00113891) is the property of Indian Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 187520644 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Incidence of pregnant endangered devil rays (Elasmobranchii: Mobulidae) from the Gulf of Mannar and Palk Bay, southeast coast of India. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Remya%2C+L%2E%22">Remya, L.</searchLink><relatesTo>1</relatesTo><i> lremya9@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Thomas%2C+Sujitha%22">Thomas, Sujitha</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Muktha%2C+M%2E%22">Muktha, M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Kizhakudan%2C+Shoba+Joe%22">Kizhakudan, Shoba Joe</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Current+Science+%2800113891%29%22">Current Science (00113891)</searchLink>. 8/25/2025, Vol. 129 Issue 4, p362-369. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mobulidae%22">Mobulidae</searchLink><br /><searchLink fieldCode="DE" term="%22Mating+grounds%22">Mating grounds</searchLink><br /><searchLink fieldCode="DE" term="%22Endangered+species%22">Endangered species</searchLink><br /><searchLink fieldCode="DE" term="%22Anthropogenic+effects+on+nature%22">Anthropogenic effects on nature</searchLink><br /><searchLink fieldCode="DE" term="%22Life+history+theory%22">Life history theory</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Gulf+of+Mannar%22">Gulf of Mannar</searchLink><br /><searchLink fieldCode="DE" term="%22India%22">India</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Out of the nine valid extant mobulid species confirmed globally, seven have been reported in India. All mobulids are vulnerable due to anthropogenic pressure, i.e. commercial fisheries, for their gill plates, which are traded on the international market. Information on their reproductive biology including, the seasons of mating, pupping, and nursery grounds are still largely unknown from Indian waters. The present study reports the occurrence of pregnant endangered devil rays, longhorned pygmy devil ray Mobula eregoodoo, oceanic manta ray Mobula birostris and Bentfin devil ray Mobula thurstoni in Indian waters, off the southeast coast. All three species were observed to have a single pup each. Our observations of mobulid catch from 2020 to 2022 indicates a predictable occurrence of pregnant devil rays either for feeding or for pupping (July to November), with a peak during November in the Gulf of Mannar and Palk Bay. The size-atbirth was in the order of 33.3 cm disc width (DW), 125.8 cm DW and 40.5-60.5 cm DW for M. eregoodoo, M. birostris and M. thurstoni respectively. Mobula thurstoni chiefly consumed needle squid and Acetes spp., while the gut contents of the other two species were completely digested. The observations on M. thurstoni suggests a pupping/nursery/feeding ground off the Gulf of Mannar, probably assist to develop area-based management interventions. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Current Science (00113891) is the property of Indian Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=187520644 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.18520/cs/v129/i4/362-369 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 362 Subjects: – SubjectFull: Mobulidae Type: general – SubjectFull: Mating grounds Type: general – SubjectFull: Endangered species Type: general – SubjectFull: Anthropogenic effects on nature Type: general – SubjectFull: Life history theory Type: general – SubjectFull: Gulf of Mannar Type: general – SubjectFull: India Type: general Titles: – TitleFull: Incidence of pregnant endangered devil rays (Elasmobranchii: Mobulidae) from the Gulf of Mannar and Palk Bay, southeast coast of India. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Remya, L. – PersonEntity: Name: NameFull: Thomas, Sujitha – PersonEntity: Name: NameFull: Muktha, M. – PersonEntity: Name: NameFull: Kizhakudan, Shoba Joe IsPartOfRelationships: – BibEntity: Dates: – D: 25 M: 08 Text: 8/25/2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00113891 Numbering: – Type: volume Value: 129 – Type: issue Value: 4 Titles: – TitleFull: Current Science (00113891) Type: main |
| ResultId | 1 |
