Evidence of isotopic maternal transmission influence on bluefin tuna (Thunnus thynnus) larval growth

Quintanilla, José María Suárez; Malca, Estrella; Lamkin, John T.; García, A.; Laiz‐Carrión, Raúl

doi:10.1016/j.marenvres.2023.106112

Cited by 1 publication

(11 citation statements)

References 111 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ABFT larvae were sorted, preserved and processed on board following standard protocols [65] to obtain standard length (SL, mm) and dry weights (DW, mg). Specimens were freeze-dried and placed in individual tin capsules (0.2-2 mg) for SIA analyses.…”

Section: Sampling and Processing Of Abft Larvae And Planktonmentioning

confidence: 99%

“…Otoliths were removed, cleaned with distilled water and fixed on slides with one drop of nail lacquer [65]. Sagittal otoliths were digitalized as stacks of focal-depth images, varying in number depending on otolith size.…”

Section: Otolith Analysesmentioning

confidence: 99%

“…Otolith radius (RADIUS, µm), daily increments (AGE, days) and mean increment widths (MIW, µm) were also measured by Leica image analysis software. Reading criteria for ABFT larval age estimations were previously applied [34,65,66] and detailed by Malca et al [64].…”

Section: Otolith Analysesmentioning

confidence: 99%

“…The δ 15 N and δ 13 C values for eggs were obtained from newly spawned eggs and lecithotrophic larvae (n = 20 pooled) from aquaculture rearing experiments [53]. For wild ABFT larvae, the isotopic values of eggs were calculated using a random variable originating from the mean and standard deviation of egg and lecithotrophic larvae of the rearing experiment [65].…”

Section: Estimation Of Isotopic Maternal Signaturesmentioning

confidence: 99%

“…Following the method of [71], the residual analysis defined groups according to the optimal (OPT) and deficient (DEF) growth patterns in length (SL) and weight (DW) of individual larvae. For intra-population comparisons, these groups were compared through an ANCOVA analysis controlled by AGE [65].…”

Section: Statistical Analysesmentioning

confidence: 99%

See 4 more Smart Citations

Maternal Effects and Trophodynamics Drive Interannual Larval Growth Variability of Atlantic Bluefin Tuna (Thunnus thynnus) from the Gulf of Mexico

Quintanilla,

Borrego-Santos,

Malca

et al. 2024

Animals

Self Cite

View full text Add to dashboard Cite

Two cohorts of Atlantic bluefin tuna (Thunnus thynnus) larvae were sampled in 2017 and 2018 during the peak of spawning in the Gulf of Mexico (GOM). We examined environmental variables, daily growth, otolith biometry and stable isotopes and found that the GOM18 cohort grew at faster rates, with larger and wider otoliths. Inter and intra-population analyses (deficient vs. optimal growth groups) were carried out for pre- and post-flexion developmental stages to determine maternal and trophodynamic influences on larval growth variability based on larval isotopic signatures, trophic niche sizes and their overlaps. For the pre-flexion stages in both years, the optimal growth groups had significantly lower δ15N, implying a direct relationship between growth potential and maternal inheritance. Optimal growth groups and stages for both years showed lower C:N ratios, reflecting a greater energy investment in growth. The results of this study illustrate the interannual transgenerational trophic plasticity of a spawning stock and its linkages to growth potential of their offsprings in the GOM.

show abstract

Section: Sampling and Processing Of Abft Larvae And Planktonmentioning

confidence: 99%

Section: Otolith Analysesmentioning

confidence: 99%