Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea
The dynamics of age, growth, maturation and spawning of the Indian squid Uroteuthis duvaucelii, were determined by statolith analysis in the tropical southeastern Arabian Sea. In the samples, the smallest male (30 mm Dorsal Mantle Length) was 63 days old and the largest (350 mm DML) 170 days old. Th...
Published in: | Regional Studies in Marine Science |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier B.V.
2022
|
Subjects: | |
Online Access: | http://eprints.cmfri.org.in/15888/ http://eprints.cmfri.org.in/15888/1/Regional%20Studies%20in%20Marine%20Science_2022_Sajikumar%20K%20K.pdf https://www.sciencedirect.com/science/article/pii/S2352485522000846?via%3Dihub https://doi.org/10.1016/j.rsma.2022.102324 |
id |
ftcmfri:oai:eprints.cmfri.org.in:15888 |
---|---|
record_format |
openpolar |
spelling |
ftcmfri:oai:eprints.cmfri.org.in:15888 2023-05-15T16:01:20+02:00 Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea Sajikumar, K K Sasikumar, Geetha Jayasankar, J Bharti, Vivekanand Venkatesan, V Jestin Joy, K M Alloycious, P S Mohamed, K S 2022 text http://eprints.cmfri.org.in/15888/ http://eprints.cmfri.org.in/15888/1/Regional%20Studies%20in%20Marine%20Science_2022_Sajikumar%20K%20K.pdf https://www.sciencedirect.com/science/article/pii/S2352485522000846?via%3Dihub https://doi.org/10.1016/j.rsma.2022.102324 en eng Elsevier B.V. http://eprints.cmfri.org.in/15888/1/Regional%20Studies%20in%20Marine%20Science_2022_Sajikumar%20K%20K.pdf Sajikumar, K K and Sasikumar, Geetha and Jayasankar, J and Bharti, Vivekanand and Venkatesan, V and Jestin Joy, K M and Alloycious, P S and Mohamed, K S (2022) Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea. Regional Studies in Marine Science, 52. pp. 1-16. age and growth Fish biology Cephalopods Molluscan Fisheries Article PeerReviewed 2022 ftcmfri https://doi.org/10.1016/j.rsma.2022.102324 2023-02-18T19:02:41Z The dynamics of age, growth, maturation and spawning of the Indian squid Uroteuthis duvaucelii, were determined by statolith analysis in the tropical southeastern Arabian Sea. In the samples, the smallest male (30 mm Dorsal Mantle Length) was 63 days old and the largest (350 mm DML) 170 days old. The smallest female (32 mm DML) was 62 days old and the largest female (207 mm DML) was 146 days old. The maximum life span was estimated at 6 months. Recruitment to the trawl fishery occurred approximately after two months of age. The average daily growth rates were estimated as 1.22 mm DML/day for females and 1.48 mm DML/day for males. The age at first maturity was estimated as 98 days for males and 106 days for females. Hatch dates were distributed throughout the whole year with two peaks indicating the presence of two cohorts with varying growth dynamics. The best-fitting growth models were the Gompertz growth model for females and the Linear model for the male populations based on the Akaike Information Criterion (AIC). This study suggests that fast growth and a short life span associated with a rapid population turnover may facilitate continuous recruitment to the fishery. From a conservation and management perspective, a closed fishing season during the peak spawning and hatching period (October–November) or in the subsequent recruitment period may prove beneficial to U. duvaucelii population in the Arabian Sea. This study further improves the overall understanding of the life-cycle of multiple spawning tropical squids. Article in Journal/Newspaper DML Central Marine Fisheries Research Institute, Kochi, India: Eprints@CMFRI Indian Regional Studies in Marine Science 52 102324 |
institution |
Open Polar |
collection |
Central Marine Fisheries Research Institute, Kochi, India: Eprints@CMFRI |
op_collection_id |
ftcmfri |
language |
English |
topic |
age and growth Fish biology Cephalopods Molluscan Fisheries |
spellingShingle |
age and growth Fish biology Cephalopods Molluscan Fisheries Sajikumar, K K Sasikumar, Geetha Jayasankar, J Bharti, Vivekanand Venkatesan, V Jestin Joy, K M Alloycious, P S Mohamed, K S Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea |
topic_facet |
age and growth Fish biology Cephalopods Molluscan Fisheries |
description |
The dynamics of age, growth, maturation and spawning of the Indian squid Uroteuthis duvaucelii, were determined by statolith analysis in the tropical southeastern Arabian Sea. In the samples, the smallest male (30 mm Dorsal Mantle Length) was 63 days old and the largest (350 mm DML) 170 days old. The smallest female (32 mm DML) was 62 days old and the largest female (207 mm DML) was 146 days old. The maximum life span was estimated at 6 months. Recruitment to the trawl fishery occurred approximately after two months of age. The average daily growth rates were estimated as 1.22 mm DML/day for females and 1.48 mm DML/day for males. The age at first maturity was estimated as 98 days for males and 106 days for females. Hatch dates were distributed throughout the whole year with two peaks indicating the presence of two cohorts with varying growth dynamics. The best-fitting growth models were the Gompertz growth model for females and the Linear model for the male populations based on the Akaike Information Criterion (AIC). This study suggests that fast growth and a short life span associated with a rapid population turnover may facilitate continuous recruitment to the fishery. From a conservation and management perspective, a closed fishing season during the peak spawning and hatching period (October–November) or in the subsequent recruitment period may prove beneficial to U. duvaucelii population in the Arabian Sea. This study further improves the overall understanding of the life-cycle of multiple spawning tropical squids. |
format |
Article in Journal/Newspaper |
author |
Sajikumar, K K Sasikumar, Geetha Jayasankar, J Bharti, Vivekanand Venkatesan, V Jestin Joy, K M Alloycious, P S Mohamed, K S |
author_facet |
Sajikumar, K K Sasikumar, Geetha Jayasankar, J Bharti, Vivekanand Venkatesan, V Jestin Joy, K M Alloycious, P S Mohamed, K S |
author_sort |
Sajikumar, K K |
title |
Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea |
title_short |
Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea |
title_full |
Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea |
title_fullStr |
Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea |
title_full_unstemmed |
Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea |
title_sort |
dynamics of growth and spawning in the indian squid uroteuthis duvaucelii (cephalopoda: loliginidae) from the tropical arabian sea |
publisher |
Elsevier B.V. |
publishDate |
2022 |
url |
http://eprints.cmfri.org.in/15888/ http://eprints.cmfri.org.in/15888/1/Regional%20Studies%20in%20Marine%20Science_2022_Sajikumar%20K%20K.pdf https://www.sciencedirect.com/science/article/pii/S2352485522000846?via%3Dihub https://doi.org/10.1016/j.rsma.2022.102324 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
DML |
genre_facet |
DML |
op_relation |
http://eprints.cmfri.org.in/15888/1/Regional%20Studies%20in%20Marine%20Science_2022_Sajikumar%20K%20K.pdf Sajikumar, K K and Sasikumar, Geetha and Jayasankar, J and Bharti, Vivekanand and Venkatesan, V and Jestin Joy, K M and Alloycious, P S and Mohamed, K S (2022) Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea. Regional Studies in Marine Science, 52. pp. 1-16. |
op_doi |
https://doi.org/10.1016/j.rsma.2022.102324 |
container_title |
Regional Studies in Marine Science |
container_volume |
52 |
container_start_page |
102324 |
_version_ |
1766397245766238208 |