Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea

Sajikumar, Kurichithara K.; Sasikumar, Geetha; Jayasankar, J; Barati, Vivekananda; Venkatesan, V.; Joy, K M Jestin; Alloycious, P S; Mohamed, K S

doi:10.1016/j.rsma.2022.102324

Cited by 2 publications

(3 citation statements)

References 61 publications

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“…The size of this hatching ring corresponded closely to the statolith's outer margin of the freshly hatched S. lessoniana proving that it is a hatching check. This similar feature has been reported in loliginid squids (Lipinski, 1986; Sajikumar et al ., 2022) in the Loligo spp.…”

Section: Discussionmentioning

confidence: 99%

“…The SL in S. lessoniana from GOM is higher than 0.819–1.445 mm, reported by Sajikumar (2021), and 0.239–0.796 mm by Balgos and Pauly (1998). The allometric relationship of SL to DML indicated negative allometric growth in both males and females, a phenomenon observed in other loliginid squids, including U. duvaucelii (Sajikumar et al ., 2022), U. edulis (Wang et al ., 2010), L. vulgaris (Rocha and Guerra, 1999), Alloteuthis subulata , A. africana (Arkhipkin and Nekludova, 1993) and the mesopelagic squid Ancistrocherius lesueurii (Arkhipkin, 1997).…”

Section: Discussionmentioning

confidence: 99%

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Age and growth of bigfin reef squid, Sepioteuthis lessoniana (Cephalopoda: Loliginidae), in Gulf of Mannar Marine Biosphere Reserve, Indian Ocean

Kavitha,

Sasikumar,

Linga Prabu

et al. 2024

J. Mar. Biol. Ass.

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Statolith growth increments were analysed in the bigfin reef squid, Sepioteuthis lessoniana lineage B, for estimating the age and growth in the Gulf of Mannar Biosphere Reserve (GOM), southeast coast of India. The identification of S. lessoniana lineage B was determined by mitochondrial cytochrome c oxidase I gene sequence. The statolith increment age analysis indicated that the wild-captured squid population of S. lessoniana in the study area undergoes rapid growth. The age of S. lessoniana in males ranged from 61 (95 mm dorsal mantle length (DML)) to 220 d (390 mm DML), while it was 64 (98 mm DML) to 199 d (340 mm DML) in females. The average daily growth rate in males and females was 1.63 and 1.55 mm DML d−1, respectively. The instantaneous growth rate varied from 0.85 (210 d) to 4.1% (110 d) for males and 0.65 (190 d) to 3.7% (110 d) for females. The age at first maturity was 114 and 120 d for males and females, respectively. Back-calculated hatching dates and the attainment of maturity in females suggested that the reproduction of S. lessoniana is year-round, with two distinct spawning peaks during July–August and February months; accordingly, the hatching dates were spread throughout the year, with the presence of two cohorts. Based on the statolith data, it can be concluded that S. lessoniana lineage B in the GOM has a potential lifespan of up to 7 months. This finding contradicts the previous growth estimates based on length-frequency data, which underestimated the true growth potential of this species.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Age and growth of bigfin reef squid, Sepioteuthis lessoniana (Cephalopoda: Loliginidae), in Gulf of Mannar Marine Biosphere Reserve, Indian Ocean

Kavitha,

Sasikumar,

Linga Prabu

et al. 2024

J. Mar. Biol. Ass.

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“…Cephalopod statoliths (hard structure) have unique spatiotemporal inversion properties and are good carrier for recording individual growth (Arkhipkin et al, 2018; Chen et al, 2022). Statolith microstructural information (daily increment and width) is widely used to reveal population structure, growth patterns, growth rates, and relationship between growth and environmental factors (Jackson et al, 1997; Li et al, 2022; Lipinski et al, 2016; Pecl, Moltschaniwskyj, et al, 2004; Sajikumar et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

Li,

Han,

Chen

et al. 2024

Fisheries Oceanography

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Swordtip squid (Uroteuthis edulis) is characterized by a complex population structure and rapid generation renewal and sensitive to habitat changes. Its population growth response to environmental variations implies its flexible life history traits. In this study, with the samples collected in the north‐central waters of the East China Sea from 2017 to 2021, the daily growth of the spring stock was analyzed based on the age and increment width of statolith. The gradient forest method (GFM) and generalized additive mixed models (GAMMs) were used to explore the changes in the weights of environmental variables and the relationships between daily growth and environmental variables in various growth stages. The age of the samples collected from 2017 to 2021 mainly ranged from 180 to 240 days, and the spring stock was the dominant stock. According to the distance from daily increment to core in the statolith, the life history of the spring stock was divided into four growth stages (S1 embryo–larval stage, S2 juvenile stage, S3 subadult stage, and S4 adult stage). For the spring stock, the cumulative weight of temperature and salinity in the population growth was the largest in S1 stage; the cumulative weight of temperature and velocity was the largest in S2 stage; the cumulative weight of temperature was the largest in S3 stage; and the cumulative weight of mixed layer depth (MLD), temperature, and salinity was the largest in S4 stage. The relationship between temperature at the depth of 25 m (T25) and daily growth of the spring stock was first positively correlated (S1–S2), then negatively correlated (S3), and finally positively correlated (S4). The relationship between environment variable and growth of the spring stock gradually decreased with the increase in MLD (30 to 50 m) and SSS (S3–S4, 32.2‰ to 33.2‰) and gradually increased with the increase in the velocity of currents (S1, .1 to .2 m/s). The differences in the responses of the spring stock to environmental variations in different growth stages may lead to the changes in the growth traits for the spring stock. This study provides a scientific basis for a comprehensive understanding of the life history traits of U. edulis.

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Dynamics of growth and spawning in the Indian squid Uroteuthis duvaucelii (Cephalopoda: Loliginidae) from the tropical Arabian Sea

Cited by 2 publications

References 61 publications

Age and growth of bigfin reef squid, Sepioteuthis lessoniana (Cephalopoda: Loliginidae), in Gulf of Mannar Marine Biosphere Reserve, Indian Ocean

Age and growth of bigfin reef squid, Sepioteuthis lessoniana (Cephalopoda: Loliginidae), in Gulf of Mannar Marine Biosphere Reserve, Indian Ocean

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

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