What does this research mean for the field?

In the Cacine River Estuary, female Pseudotolithus elongatus attain sexual maturity at a smaller size than males, exhibit pronounced sexual size dimorphism, and spawn year-round with a peak during the dry season. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To establish an integrated biological and reproductive baseline for the commercially exploited croaker species Pseudotolithus elongatus in an estuarine environment.

August 23, 2026FishesOpen Access

Population Biology and Reproductive Characteristics of Pseudotolithus elongatus in the Cacine River Estuary, Guinea-Bissau

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Authors

BSBupebe Júlio Sanca DNDiosnes Manuel Nonque FGFélix Guillaume

Discussion

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Overview

Observational study reveals distinct sexual maturity thresholds and size dimorphism in Pseudotolithus elongatus, highlighting crucial baselines for sustainable estuarine fishery management.

Key Points

To establish an integrated biological and reproductive baseline for the commercially exploited croaker species Pseudotolithus elongatus in an estuarine environment.
Sampled N=1776 P. elongatus specimens across three independent sampling programmes in the Cacine River Estuary, Guinea-Bissau.
Estimated length at first sexual maturity (L50) using binomial generalised linear models (GLMs) and assessed length–weight relationships using ordinary least squares regression and ANCOVA.
Evaluated sexual size dimorphism using parametric and non-parametric tests (ANOVA, Welch's t-test, Kruskal–Wallis, Kolmogorov–Smirnov) and sex ratio using Yates'-corrected chi-square tests.
Females attained sexual maturity at a significantly smaller size than males (L50 = 224.9 mm vs. 306.8 mm), with both sexes exhibiting positive allometric growth.
Females reached larger maximum body sizes and predominated across the largest length classes, demonstrating pronounced sexual size dimorphism.
Reproductive activity spanned the entire year with a peak spawning period during the dry season (February–April), while the overall sex ratio remained close to parity.

Cite This Study

Sanca et al. (2026) studied this question.

synapsesocial.com/papers/6a8aae337677a341144470d6 https://doi.org/10.3390/fishes11080493

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August 23, 2026FishesOpen Access

Population Biology and Reproductive Characteristics of Pseudotolithus elongatus in the Cacine River Estuary, Guinea-Bissau

View Full Paper

Ask AI

Bookmark

Authors

BSBupebe Júlio Sanca DNDiosnes Manuel Nonque FGFélix Guillaume

Discussion

Member takes

Overview

Observational study reveals distinct sexual maturity thresholds and size dimorphism in Pseudotolithus elongatus, highlighting crucial baselines for sustainable estuarine fishery management.

Key Points

To establish an integrated biological and reproductive baseline for the commercially exploited croaker species Pseudotolithus elongatus in an estuarine environment.
Sampled N=1776 P. elongatus specimens across three independent sampling programmes in the Cacine River Estuary, Guinea-Bissau.
Estimated length at first sexual maturity (L50) using binomial generalised linear models (GLMs) and assessed length–weight relationships using ordinary least squares regression and ANCOVA.
Evaluated sexual size dimorphism using parametric and non-parametric tests (ANOVA, Welch's t-test, Kruskal–Wallis, Kolmogorov–Smirnov) and sex ratio using Yates'-corrected chi-square tests.
Females attained sexual maturity at a significantly smaller size than males (L50 = 224.9 mm vs. 306.8 mm), with both sexes exhibiting positive allometric growth.
Females reached larger maximum body sizes and predominated across the largest length classes, demonstrating pronounced sexual size dimorphism.
Reproductive activity spanned the entire year with a peak spawning period during the dry season (February–April), while the overall sex ratio remained close to parity.

Cite This Study

Sanca et al. (2026) studied this question.

synapsesocial.com/papers/6a8aae337677a341144470d6 https://doi.org/10.3390/fishes11080493

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Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context:

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