Version 1
: Received: 16 November 2023 / Approved: 16 November 2023 / Online: 16 November 2023 (11:26:48 CET)
How to cite:
Hurtado, L.A.; Mateos, M.; Caballero, I.C.; Oladimeji, T.E.; Adite, A.; Awodiran, M.O.; Winemiller, K.O. Critically Small Contemporaneous Effective Population Sizes for Stocks of the African Bonytongue in West Africa. Preprints2023, 2023111070. https://doi.org/10.20944/preprints202311.1070.v1
Hurtado, L.A.; Mateos, M.; Caballero, I.C.; Oladimeji, T.E.; Adite, A.; Awodiran, M.O.; Winemiller, K.O. Critically Small Contemporaneous Effective Population Sizes for Stocks of the African Bonytongue in West Africa. Preprints 2023, 2023111070. https://doi.org/10.20944/preprints202311.1070.v1
Hurtado, L.A.; Mateos, M.; Caballero, I.C.; Oladimeji, T.E.; Adite, A.; Awodiran, M.O.; Winemiller, K.O. Critically Small Contemporaneous Effective Population Sizes for Stocks of the African Bonytongue in West Africa. Preprints2023, 2023111070. https://doi.org/10.20944/preprints202311.1070.v1
APA Style
Hurtado, L.A., Mateos, M., Caballero, I.C., Oladimeji, T.E., Adite, A., Awodiran, M.O., & Winemiller, K.O. (2023). Critically Small Contemporaneous Effective Population Sizes for Stocks of the African Bonytongue in West Africa. Preprints. https://doi.org/10.20944/preprints202311.1070.v1
Chicago/Turabian Style
Hurtado, L.A., Michael O Awodiran and Kirk O Winemiller. 2023 "Critically Small Contemporaneous Effective Population Sizes for Stocks of the African Bonytongue in West Africa" Preprints. https://doi.org/10.20944/preprints202311.1070.v1
Abstract
Inland capture fisheries play a critical role in supporting food security and livelihoods in West Africa. Therefore, it is important to evaluate genetic health of exploited fish populations. The African bonytongue, Heterotis niloticus, supports important commercial and subsistence fisheries in West Africa. Sharp declines of stocks have been reported, however. Herein, we estimate contemporary effective population sizes (Ne) of four Heterotis populations in Nigeria, three in Benin, and five in Cameroon using the Linkage Disequilibrium method with correction for age structure. Ne estimates were used to assess genetic short-term (i.e., inbreeding depression) and long-term (i.e., loss of evolutionary potential) risks. Analyses failed to obtain Ne point estimates for two populations. For the remaining ten populations, corrected Ne point estimates fell well below 500, the minimum recommended for populations to retain evolutionary potential; with eight populations below 100 (range 2.8–83.5), the minimum recommended to avoid inbreeding depression, one borderline (100–125), and one above this threshold (312–392). The lower 95% confidence interval bound of Ne for eleven populations was very small (0.7–14.6), and for the remaining population it was 44.2. Accordingly, all populations examined can be considered potentially at risk of inbreeding depression.
Keywords
Effective population size; Inland capture fisheries; West Africa; Heterotis
Subject
Biology and Life Sciences, Ecology, Evolution, Behavior and Systematics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
