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Obayemi OE, Komolafe OO, Ayodeji OA, Ajayi O, Adewumi PO, Adeniran II, Olalekan KO, Oladimeji TK. Assessment of climatic and environmental parameters on fish abundance of an afro-tropical reservoir. Sci Rep 2024; 14:23991. [PMID: 39402123 DOI: 10.1038/s41598-024-75181-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 10/03/2024] [Indexed: 10/17/2024] Open
Abstract
This study assessed the impacts of climatic parameters (rainfall and temperature) and environmental variables (transparency, depth, chloride, TS, TSS, TOC) on the abundance of commercially important fish species in Esa-Odo. The research question was to find out if climatic and environmental factors influence the abundance of fish species in an afro-tropical reservoir. Fish species were collected on a monthly basis for two annual cycles covering both dry and rainy seasons. GIS-based climatic data was used to determine the relationship between climatic conditions and fish species abundance. Results showed that the highest abundance of fish was recorded during the rainy season, with Oreochromis niloticus being the most dominant species throughout the sampling period. Trend analysis revealed that variations in climate and environmental parameters influenced the abundance of different fish species in the reservoir. Mann-Kendal analysis indicated that an increase in rainfall led to an increase in reservoir depth, a decrease in transparency levels, and a reduction in temperature, with a Sen's slope value of -38. Additionally, CCA and correlation matrix results demonstrated that climate and environmental parameters significantly influenced fish species abundance. The study emphasized the importance of climatic and environmental factors in the abundance of fish species in the reservoir, providing valuable information for future research on fishery resources. Governments and stakeholders were urged to prioritize the conservation and management of the reservoir's fish population to prevent declines.
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Affiliation(s)
| | | | | | - Olayemi Ajayi
- Department of Biological Sciences, University of Cincinnati, Cincinnati, USA
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Akian DD, Yao K, Parmentier E, Clota F, Baroiller JF, Bégout ML. Familiarity reduces aggression but does not modify acoustic communication in pairs of Nile tilapia (Oreochromis niloticus) and black-chinned tilapia (Sarotherodon melanotheron). JOURNAL OF FISH BIOLOGY 2022; 100:561-573. [PMID: 34842286 DOI: 10.1111/jfb.14967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 11/15/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
Reproduction involves multiple complex behaviours, and the effects of familiarity on such social interactions are seldom described in fish. This is particularly true for sound production and communication within aggressive or non-aggressive context. This study explores the effects of a common garden rearing without parental care of two closely related cichlid species (Nile tilapia Oreochromis niloticus and black-chinned tilapia Sarotherodon melanotheron) on their sound production features and social interactions. After 9 months in common garden rearing, from embryonic stage to first maturity, sound production and associated behaviours were recorded on specimens of the two species in intraspecific and interspecific pairings. The authors found that fish were able to produce the same kind of sounds as those recorded in similar context for their parents. Drum sounds were associated to chasing, lateral attack and courtship in O. niloticus and only to fleeing or avoidance in S. melanotheron. Specific grunts were produced in chasing, after biting and in nest building by O. niloticus, and specific rolling sounds were associated to courtship in S. melanotheron. Sound production and behaviours were not correlated to sex steroid levels, but the number of sounds recorded in aggressive context was correlated to dominance in O. niloticus. The authors conclude that one generation of common garden rearing does not modify sound features, which remain specific and innate in the two cichlids. Despite the familiarity, O. niloticus remained dominant on S. melanotheron, but the aggressiveness between the two species decreased.
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Affiliation(s)
- Dieudonné Djétouan Akian
- Département Eaux, Forêts et Environnement, Institut National Polytechnique Félix Houphouët Boigny, Yamoussoukro, Côte d'Ivoire
- Laboratoire de Biologie et Cytologie Animales, Unité de Formation et de Recherche Science de la Nature, Université NANGUI ABROGOUA, Abidjan, Côte d'Ivoire
- MARBEC, Université Montpellier, CNRS, Ifremer, IRD, Palavas-les-Flots, France
| | - Kouakou Yao
- Laboratoire de Biologie et Cytologie Animales, Unité de Formation et de Recherche Science de la Nature, Université NANGUI ABROGOUA, Abidjan, Côte d'Ivoire
| | - Eric Parmentier
- Laboratoire de Morphologie Fonctionnelle et Evolutive, AFFISH, Institut de chimie-B6C, Université de Liège, Liège, Belgium
| | - Frédéric Clota
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas, France
| | - Jean-François Baroiller
- Unité Mixte de Recherche 116, Institut des Sciences de l'Evolution de Montpellier, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Campus International de Baillarguet, Montpellier, France
- Institut des Sciences de l'Evolution de Montpellier Centre, National de la Recherche Scientifique, Institut de Recherche pour le Développement, Ecole Pratique des Hautes Etudes, Université de Montpellier, Montpellier, France
| | - Marie-Laure Bégout
- MARBEC, Université Montpellier, CNRS, Ifremer, IRD, Palavas-les-Flots, France
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Akian DD, Yao K, Parmentier E, Joassard L, Clota F, Baroiller JF, Lozano P, Chatain B, Bégout ML. Acoustic signals produced by Nile tilapia Oreochromis niloticus and black-chinned tilapia Sarotherodon melanotheron during intra- and interspecific pairings. ZOOLOGY 2020; 143:125831. [PMID: 32949976 DOI: 10.1016/j.zool.2020.125831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 11/18/2022]
Abstract
We characterised, for the first-time, the sound production of black-chinned tilapia Sarotherodon melanotheron and show differences with that of Nile tilapia Oreochromis niloticus in a hybridization pairing context. Although both species were able to produce drum sounds, they showed different acoustic features. Drum sounds were produced in aggressive (chasing or lateral attack) and non-aggressive (courtship) contexts by O. niloticus but only in aggressive situations (fleeing or avoidance) by S. melanotheron. The second type of sounds produced by O. niloticus were grunts, produced in both aggressive (chasing and after biting) and non-aggressive contexts (nest building). The second type of sound produced by S. melanotheron was a rolling sound, produced only during courtship. Each species was able to produce common sounds (drum) and species-specific sounds (grunts and rolling). This implies that species can communicate without being able to understand each other because the sounds emitted may probably have different significance. Drumming corresponded only to aggressivity in S. melanotheron, whereas this was not true for O. niloticus. 11-ketotestosterone (11-kt) levels were significantly higher in male O. niloticus than male S. melanotheron, but there was no significant correlation between 11-kt or estradiol concentrations and the number of sounds produced in aggressive or non-aggressive behavioural contexts in either species. During interspecies interactions, O. niloticus drum sounds are likely considered to be aggressive by S. melanotheron and could potentially constitute a reproductive barrier between the two species.
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Affiliation(s)
- Dieudonné Djétouan Akian
- Département Eaux, Forêts et Environnement, Institut National Polytechnique Félix Houphouët Boigny, BP 1313, Yamoussoukro, Cote d'Ivoire; Laboratoire de Biologie et Cytologie Animales, Unité de Formation et de Recherche Science de la Nature, Université Nangui-Abrogoua, 02 BP 801, Abidjan 02, Cote d'Ivoire; Laboratoire Ressources Halieutiques, Institut Français de Recherche pour l'Exploitation de la Mer, L'Houmeau, 17137, France
| | - Kouakou Yao
- Laboratoire de Biologie et Cytologie Animales, Unité de Formation et de Recherche Science de la Nature, Université Nangui-Abrogoua, 02 BP 801, Abidjan 02, Cote d'Ivoire
| | - Eric Parmentier
- Laboratoire de Morphologie Fonctionnelle et Evolutive, AFFISH, Institut de chimie- B6C, Université de Liège, Sart Tilman, 4000, Liège, Belgium
| | - Lucette Joassard
- Laboratoire Ressources Halieutiques, Institut Français de Recherche pour l'Exploitation de la Mer, L'Houmeau, 17137, France
| | - Frédéric Clota
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
| | - Jean-François Baroiller
- Unité Mixte de Recherche 116, Institut des Sciences de l'Evolution de Montpellier, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Montpellier, France
| | - Paul Lozano
- Unité Mixte de Recherche 116, Institut des Sciences de l'Evolution de Montpellier, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Montpellier, France
| | - Béatrice Chatain
- MARBEC, Université Montpellier, CNRS, Ifremer, IRD, Chemin de Maguelone, 34250, Palavas-les-Flots, France
| | - Marie-Laure Bégout
- Laboratoire Ressources Halieutiques, Institut Français de Recherche pour l'Exploitation de la Mer, L'Houmeau, 17137, France; MARBEC, Université Montpellier, CNRS, Ifremer, IRD, Chemin de Maguelone, 34250, Palavas-les-Flots, France.
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