Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors
This paper describes a mated female of the giant form of purpleback flying squid Sthenoteuthis oualaniensis (545 mm dorsal mantle length and 5.46 kg body weight) caught in the Arabian Sea, with biological, morphological, and molecular descriptors. Based on the growth increments within statoliths, it...
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ftcmfri:oai:eprints.cmfri.org.in:15521 2023-05-15T16:01:58+02:00 Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors Sajikumar, K K Najmudeen, T M Ragesh, N Jeena, N S Rahuman, Summaya Sunil, K T S Sasikumar, Geetha Mohamed, K S 2021 text http://eprints.cmfri.org.in/15521/ http://eprints.cmfri.org.in/15521/1/Molluscan%20Research_2021_Saji%20Kumar%20K%20K.pdf https://www.tandfonline.com/doi/full/10.1080/13235818.2021.2003513 en eng Taylor and Francis http://eprints.cmfri.org.in/15521/1/Molluscan%20Research_2021_Saji%20Kumar%20K%20K.pdf Sajikumar, K K and Najmudeen, T M and Ragesh, N and Jeena, N S and Rahuman, Summaya and Sunil, K T S and Sasikumar, Geetha and Mohamed, K S (2021) Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors. Molluscan Research. pp. 1-10. Fish biology Cephalopods Molluscan Fisheries Article PeerReviewed 2021 ftcmfri 2023-02-18T19:02:41Z This paper describes a mated female of the giant form of purpleback flying squid Sthenoteuthis oualaniensis (545 mm dorsal mantle length and 5.46 kg body weight) caught in the Arabian Sea, with biological, morphological, and molecular descriptors. Based on the growth increments within statoliths, its age was found to be 203 days with a high growth rate of 2.68 mm DML/day. Its diet contained squids (72.3%) and fish (27.3%) with a high degree (70%) of cannibalism. The total fecundity of the individual was estimated as 702,240 eggs. Three species of parasites were found, two species of Platyhelminthes from the mantle cavity (Phyllobothrium sp. and Nybelinia sp.) and one of Nematoda from the stomach (Anisakis simplex). The COI barcode confirmed the identity of the giant form as S. oualaniensis, and the high genetic divergence (6.18–9.35%) that was observed between the current specimen and other forms from various oceans points to the probability that it might be a genetically distinct lineage from the northern Indian Ocean. The present record forms the southernmost (10°05′ N) record of the giant form of this flying squid. Article in Journal/Newspaper DML Central Marine Fisheries Research Institute, Kochi, India: Eprints@CMFRI Indian |
institution |
Open Polar |
collection |
Central Marine Fisheries Research Institute, Kochi, India: Eprints@CMFRI |
op_collection_id |
ftcmfri |
language |
English |
topic |
Fish biology Cephalopods Molluscan Fisheries |
spellingShingle |
Fish biology Cephalopods Molluscan Fisheries Sajikumar, K K Najmudeen, T M Ragesh, N Jeena, N S Rahuman, Summaya Sunil, K T S Sasikumar, Geetha Mohamed, K S Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors |
topic_facet |
Fish biology Cephalopods Molluscan Fisheries |
description |
This paper describes a mated female of the giant form of purpleback flying squid Sthenoteuthis oualaniensis (545 mm dorsal mantle length and 5.46 kg body weight) caught in the Arabian Sea, with biological, morphological, and molecular descriptors. Based on the growth increments within statoliths, its age was found to be 203 days with a high growth rate of 2.68 mm DML/day. Its diet contained squids (72.3%) and fish (27.3%) with a high degree (70%) of cannibalism. The total fecundity of the individual was estimated as 702,240 eggs. Three species of parasites were found, two species of Platyhelminthes from the mantle cavity (Phyllobothrium sp. and Nybelinia sp.) and one of Nematoda from the stomach (Anisakis simplex). The COI barcode confirmed the identity of the giant form as S. oualaniensis, and the high genetic divergence (6.18–9.35%) that was observed between the current specimen and other forms from various oceans points to the probability that it might be a genetically distinct lineage from the northern Indian Ocean. The present record forms the southernmost (10°05′ N) record of the giant form of this flying squid. |
format |
Article in Journal/Newspaper |
author |
Sajikumar, K K Najmudeen, T M Ragesh, N Jeena, N S Rahuman, Summaya Sunil, K T S Sasikumar, Geetha Mohamed, K S |
author_facet |
Sajikumar, K K Najmudeen, T M Ragesh, N Jeena, N S Rahuman, Summaya Sunil, K T S Sasikumar, Geetha Mohamed, K S |
author_sort |
Sajikumar, K K |
title |
Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors |
title_short |
Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors |
title_full |
Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors |
title_fullStr |
Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors |
title_full_unstemmed |
Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors |
title_sort |
characterisation of an individual of the giant form of the purpleback flying squid sthenoteuthis oualaniensis (cephalopoda: ommastriphidae) in the arabian sea and its biological descriptors |
publisher |
Taylor and Francis |
publishDate |
2021 |
url |
http://eprints.cmfri.org.in/15521/ http://eprints.cmfri.org.in/15521/1/Molluscan%20Research_2021_Saji%20Kumar%20K%20K.pdf https://www.tandfonline.com/doi/full/10.1080/13235818.2021.2003513 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
DML |
genre_facet |
DML |
op_relation |
http://eprints.cmfri.org.in/15521/1/Molluscan%20Research_2021_Saji%20Kumar%20K%20K.pdf Sajikumar, K K and Najmudeen, T M and Ragesh, N and Jeena, N S and Rahuman, Summaya and Sunil, K T S and Sasikumar, Geetha and Mohamed, K S (2021) Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors. Molluscan Research. pp. 1-10. |
_version_ |
1766397629471653888 |