First data on growth and nucleic acid and protein content of field-captured Mediterranean bluefin (Thunnus thynnus) and albacore (Thunnus alalunga) tuna larvae: a comparative study
Open accessAbstract
The waters surrounding the Balearic archipelago are considered to be prime spawning habitats of the bluefin tuna (Thunnus thynnus) and other tuna species such as albacore (T. alalunga) in the Mediterranean. During the 2003 bluefin and albacore spawning season, a tuna larval survey (TUNIBAL 0703) was carried out to assess the distribution of bluefin larvae in relation to hydrographic mesoscale features. Tuna larvae were collected by means of surface plankton tows with a bongo gear with a quadrangular mouth measuring 1 m diagonally. The otolith microstructure of 157 and 71 field-captured larvae of Mediterranean bluefin and albacore, respectively, were analyzed to estimate the daily growth pattern. Furthermore, biochemical analysis to estimate DNA, RNA and protein content was done on another batch of 114 bluefin and 132 albacore larvae. The size range included pre-flexion to post-flexion larvae, from 2.8 to 8.6 mm in body length. bluefin and albacore larvae grew linearly in standard length (0.35 and 0.33 mm/day, respectively) and potentially with respect to dry weight. No significant differences between species were observed in the size-weight relationship, or in the allometric relationship of body size and weight to otolith radius. However, the relationship of DNA and RNA to body size and weight showed a significant difference between species. Bluefin tuna larvae showed a greater nucleic acid content than albacore larvae. Protein content showed no significant differences with respect to body length.
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Empirical relationships from previous Mediterranean studies accurately estimate the age of Tuna larvae from otolith daily increments and standard length.
“we used the empirical relationships estimated in previous studies in the Mediterranean Sea on the daily increment of otolith rings related to standard length (SL) [40,41].”
From Environmental Conditions along Tuna Larval Dispersion: Insights on the Spawning Habitat and Impact on Their Development Stages (2022) · cites this paper as [40]
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“In studies focusing on the analysis of nutritional status of tuna larvae, the existing techniques have tended towards histological methods, mainly focusing on histological characteristics and appearance of the digestive tract (Margulies, 1993; Kaji et al., 1996, 1999).”
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Reglero, P., Balbín, R., Abascal, F. J., Medina, A., Alvarez-Berastegui, D., Rasmuson, L., Mourre, B., Saber, S., Ortega, A., Blanco, E., et al. (2019) · ICES Journal of Marine Science · doi:10.1093/icesjms/fsy135 · Cited by 28 · see citing works
Russo, S., Torri, M., Patti, B., Musco, M., Masullo, T., Di Natale, M. V., Sarà, G., & Cuttitta, A. (2022) · Water · doi:10.3390/w14101568 · Cited by 17 · see citing works
- Authors
- García, A., Cortés, D., Ramírez, T., Fehri-Bedoui, R., Alemany, F., Rodríguez, J. M., Carpena, Á., & Álvarez, J. P.
- Affiliations
- Instituto Español de Oceanografía (ES)
- Tunis University (TN)
- Venue
- Scientia Marina
- Publisher
- Editorial CSIC
- Published
- 2006-10-30
- Volume
- 70
- Issue
- S2
- Pages
- 67-78
- ISSN
- 0214-8358 (ISSN-L)
- 1886-8134
- OpenAlex
- W1598380891
- Cited by
- 40
- References
- 1
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 1 · 2019: 4 · 2018: 2 · 2017: 5 · 2016: 2 · 2015: 1 · 2014: 1 · 2013: 5 · 2012: 2
- FWCI
- 0.62
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Locations
- Scientia Marina (publishedVersion, cc-by)
- DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by-nc-nd)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Greater South Information System
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Fish Biology and Ecology Studies
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Keywords
- bluefin tuna, albacore tuna, Thunnus thynnus, tuna larvae, larval growth, otolith microstructure, DNA content, RNA content, protein content, size-weight relationship, allometric growth, spawning grounds, Balearic Islands, Mediterranean Sea
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