A modified seahorse optimization algorithm based on chaotic maps for solving global optimization and engineering problems

Engineering Science and Technology an International Journal, Journal Year: 2023, Volume and Issue: 41, P. 101408 - 101408

Published: April 10, 2023

Metaheuristic optimization algorithms are global approaches that manage the search process to efficiently explore spaces associated with different problems. Seahorse (SHO) is a novel swarm-based metaheuristic method inspired by certain behaviors of sea horses. The SHO algorithm mimics movement, hunting, and breeding behavior horses in nature. Chaotic maps effectively used improve performance avoiding local optimum increasing speed convergence. In this study, 10 chaotic have been employed for first time produce values rather than random SHO, method. purpose using generate their increase convergence original avoid optimum. 33 benchmark functions, consisting unimodal, multimodal, fixed-dimension CEC2019, utilized assess (CSHO), which introduced study. addition, proposed CSHO has compared four literature, namely Sine Cosine Algorithm, Salp Swarm Whale Optimization Particle Optimization. Statistical analyses obtained results also performed. then implemented 4 real-world engineering design problems, including welded beam, pressure vessel, tension/compression spring, reducer. popular methods literature. Experimental show it gives successful promising algorithm.

Language: Английский

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Divergence and gene flow history at two large chromosomal inversions underlying ecotype differentiation in the long‐snouted seahorse

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(24)

Published: Jan. 27, 2024

Abstract Chromosomal inversions can play an important role in divergence and reproductive isolation by building maintaining distinct allelic combinations between evolutionary lineages. Alternatively, they take the form of balanced polymorphisms that segregate within populations until one arrangement becomes fixed. Many questions remain about how inversion arise, are maintained over long term, ultimately, whether contribute to speciation. The long‐snouted seahorse ( Hippocampus guttulatus ) is genetically subdivided into geographic lineages marine‐lagoon ecotypes, with shared structural variation underlying lineage ecotype divergence. Here, we aim characterize variants reconstruct their history suspected formation. We generated a near chromosome‐level genome assembly described genome‐wide patterns diversity through analysis 112 whole‐genome sequences from Atlantic, Mediterranean, Black Sea populations. By also analysing linked‐read sequencing data, found evidence for two chromosomal were several megabases length showed contrasting allele frequency ecotypes across species range. reveal these represent ancient intraspecific polymorphisms, likely being divergent selection other pseudo‐overdominance. A possible selective coupling was further supported absence specific haplotype putative functional interaction reproduction. Lastly, detected gene flux eroding inverted alleles at varying levels inversions, impact on dynamics contribution

Language: Английский

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Identification and expression analysis of three gonadotropin-releasing hormone genes in the lined seahorse (Hippocampus erectus)

General and Comparative Endocrinology, Journal Year: 2025, Volume and Issue: unknown, P. 114673 - 114673

Published: Feb. 1, 2025

Language: Английский

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Seahorse Male Pregnancy as a Model System to Study Pregnancy, Immune Adaptations, and Environmental Effects

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(11), P. 9712 - 9712

Published: June 3, 2023

Seahorses, together with sea dragons and pipefishes, belong to the

Language: Английский

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Administration of Arginine Vasotocin and modified Isotocin improve artificial propagation and post-spawning survival of female yellow catfish

Aquaculture, Journal Year: 2024, Volume and Issue: 587, P. 740849 - 740849

Published: March 19, 2024

Language: Английский

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Assessing the state of seahorse research through scientometric analysis: an update

Reviews in Fish Biology and Fisheries, Journal Year: 2023, Volume and Issue: 33(4), P. 1237 - 1262

Published: July 25, 2023

Language: Английский

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Feeding longsnout seahorse Hippocampus reidi broodstock at different frequencies influences production of eggs and quality of the offspring

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: Sept. 6, 2023

Abstract This study determined the optimum feeding frequency for Hippocampus reidi breeders by evaluating their zootechnical and reproductive parameters, quality of larvae (resistance to starvation), fatty acid profile oocytes. Twelve breeding couples (aprox. 27g; 18 cm per individual) were fed daily with enriched caridean shrimp Palaemon sp. until apparent satiation during 101 days. Four frequencies tested in triplicate: one (F1), two (F2), three (F3) four (F4) feedings day. Breeders from both sexes just once a day had lower weight gain specific growth rates than other treatments (P<0.05). Newly born size values (2.06 ± 0.11 mg; 7.9 0.06 mm) F3 F4 higher receiving or (1.62 0.17 6.7 0.05 mm). Number parturition (928.5) was almost double number F1 F2. The longest time resistance food deprivation observed F4, where 100% mortality occurred 96 hours. A concentration polyunsaturated acids, arachidonic (AA) docosahexaenoic (DHA) treatments. It is therefore recommended that when H. are shrimp, times should be offered obtain best performance them, highest quantity produced.

Language: Английский

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Feeding longsnout seahorse Hippocampus reidi broodstock at different frequencies influences production of eggs and quality of the offspring

Aquaculture International, Journal Year: 2023, Volume and Issue: 32(4), P. 4045 - 4060

Published: Dec. 16, 2023

Language: Английский

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Features of social organization of representatives of the genus Hippocampus, family Syngnathidae

CHERKASY UNIVERSITY BULLETIN BIOLOGICAL SCIENCES SERIES, Journal Year: 2022, Volume and Issue: 2

Published: Jan. 1, 2022

В статті представлено аналіз та узагальнення сучасних наукових досліджень стосовно особливостей соціальної організації представників роду Hippocampus, родини Syngnathidae, переважна частина яких має охоронний статус. Вивчення цих риб надає можливість їх збереження і подальшого відтворення природних популяцій. Аналіз популяцій морського коника свідчить про наявність складних поведінкових вибору партнера, який залежить від оперативного загального співвідношення статей в популяції певний період часу. Відхилення нормального може порушувати соціальну організацію впливати на життєздатність цілому. При доступності партнера можливо явище полігінії, але генетична моногамія є обов’язковою для всіх Hippocampus.Зміна статевих ролей, внутрішньостатева конкуренція самок, у популяціях морських коників тривалий час вважалась характерною рисою, притаманною усім представникам цього роду. Але сучасні дослідження спростовують це уявлення. Доведено, що статеві ролі пластичними, зміни мають винятково пристосувальний характер, залежать багатьох факторів, підтверджує перспективність подальших даного явища.В ході аналізу Hippocampus виділено наступні соціальні особливості: виняткова прив’язаність до місця існування; самців самок територіальних зон, розмір видовою ознакою; зон соціальних зустрічей, які проявляються формі взаємних привітань або залицянь; прояви агресивної захисної поведінки характерні лише самців, рідкісним явищем виникають як результат внутрішньостатевої конкуренції.

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