Palatability of Amino Acids Isomers for Cichlid Fishes (Cichlidae)

IF 0.5 4区 生物学 Q4 FISHERIES Journal of Ichthyology Pub Date : 2024-03-25 DOI:10.1134/s0032945224010041
A. D. Levina, A. O. Kasumyan
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Abstract

The palatability of L-α- and D-α-isomers of alanine, aspartic and glutamic acids, and tryptophan, as well as L-α- and L-β-isomers of alanine for the Mozambique and Nile tilapias (Oreochromis mossambicus and O. niloticus, respectively), golden mbuna Melanochromis auratus, lemon cichlid Neolamprologus leleupi, and the tailbar cichlid Vieja hartwegi has been compared. Consumption of agar-agar pellets with L-α- and D‑α-isomers of aspartic and glutamic acids and tryptophan differs in Mozambique tilapia and tailbar cichlid, pellets with alanine and tryptophan, in golden mbuna, with aspartic acid and tryptophan, in lemon cichlid, and with aspartic acid, in Nile tilapia. The palatability of L-α- and L-β-isomers of alanine is significantly different for the Mozambique tilapia, lemon cichlid and tailbar cichlid. The feeding behavior exhibited by cichlids during orosensory testing of pellets is similar and little depends on the palatability of the pellets. All cichlids make a small number of rejections and repeated grasps of pellets; most cichlids retain pellets in the oral cavity many times longer in experiments that ended by consumption. The different taste properties of optical and structural isomers of amino acids for the studied cichlids confirm the species specificity of taste preferences in fish and indicate the importance of these substances as chemical regulators of trophic relationships in aquatic communities.

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慈鲷对氨基酸异构体的适口性
摘要 L-α-和D-α-异构体丙氨酸、天门冬氨酸和谷氨酸、色氨酸以及L-α-和L-β-异构体丙氨酸对莫桑比克罗非鱼和尼罗罗非鱼(分别为莫桑比克罗非鱼和尼罗罗非鱼)、金鲷(Melanochromis Meluratus)、柠檬罗非鱼(Neolamprologus leleupi)和尾条罗非鱼(Vieja hiloticus)的适口性。和尼罗罗非鱼)、金鲷(Melanochromis auratus)、柠檬慈鲷(Neolamprologus leleupi)和尾条慈鲷(Vieja hartwegi)的丙氨酸摄入量进行了比较。莫桑比克罗非鱼和尾条慈鲷对含有天门冬氨酸、谷氨酸和色氨酸的 L-α- 和 D-α- 异构体的琼脂颗粒、金鲷对含有丙氨酸和色氨酸的颗粒、柠檬慈鲷对含有天门冬氨酸和色氨酸的颗粒以及尼罗罗非鱼对含有天门冬氨酸的颗粒的食用量各不相同。莫桑比克罗非鱼、柠檬慈鲷和尾条慈鲷对丙氨酸的 L-α- 异构体和 L-β- 异构体的适口性存在显著差异。慈鲷在颗粒饲料的口感测试中表现出的摄食行为相似,几乎与颗粒饲料的适口性无关。所有慈鲷都会少量拒绝和重复抓取颗粒;在以吞食结束的实验中,大多数慈鲷在口腔中保留颗粒的时间要长很多倍。所研究的慈鲷对氨基酸的光学异构体和结构异构体具有不同的味觉特性,这证实了鱼类味觉偏好的物种特异性,并表明了这些物质作为水生群落中营养关系的化学调节剂的重要性。
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来源期刊
CiteScore
1.00
自引率
28.60%
发文量
96
期刊介绍: Journal of Ichthyology is an international peer-reviewed journal published in collaboration with the Russian Academy of Sciences. It covers original studies in fish taxonomy, evolution, molecular biology, morphology, species diversity, zoological geography, genetics, physiology, ecology, behavior, reproduction, embryology, invasions, and protection. Some problems of applied ichthyology are also covered. The journal welcomes manuscripts from all countries in the English or Russian language.
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