Results 91 to 100 of about 1,631 (226)

OSMOTIC RESPONSES OF SEGARA ANAKAN FINE SHRIMP (Metapenaeus elegans) ADULTS IN VARIOUS SALINITY AND MOLTING STAGES [PDF]

open access: yes, 2012
A research on eco-physiological characteristics of fine shrimp (Metapenaeus elegans) with special emphasis on the osmotic responses and isosmotic medium requirement for adult spawners in various molting stages was conducted. Adult stocks of M.
Subandiyono, Subandiyono   +1 more
core   +2 more sources

Аллозимные и морфологические доказательства реальности двух симпатрических видов пресноводных раков в пределах Pontastacus leptodactylus (Eschscholtz, 1823) (Decapoda: Astacidae) [PDF]

open access: yes, 2012
Проведений алозимний i морфометричний аналiз довгопалих ракiв на територiї України довiв реальнiсть двох достатньо масових репродуктивно iзольованих симпатричних, але при цьому не симбiотопiчних видiв власне вузькопалого рака Pontasctacus leptodactylus й
Жалай, Е. И.   +2 more
core  

An Improved Crayfish Algorithm‐Based Neural Network Method for Modeling Microstrip Patch Antennas

open access: yesInternational Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.
Artificial neural networks (ANNs) have shown remarkable advantages in antenna modeling and optimization as surrogate models. However, in single‐objective modeling, the convergence accuracy of ANN‐based antenna models is often insufficient. This paper proposes an improved crayfish optimization algorithm (ICOA) to optimize the initial weights and biases ...
Shao-Long Cao   +5 more
wiley   +1 more source

MCOA: A Multistrategy Collaborative Enhanced Crayfish Optimization Algorithm for Engineering Design and UAV Path Planning

open access: yesInternational Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
The crayfish optimization algorithm (COA) is a recent bionic optimization technique that mimics the summer sheltering, foraging, and competitive behaviors of crayfish. Although COA has outperformed some classical metaheuristic (MH) algorithms in preliminary studies, it still manifests the shortcomings of falling into local optimal stagnation, slow ...
Yaning Xiao   +5 more
wiley   +1 more source

The origins and foundation charter of St. Mary de Voto Tintern County Wexford 1189-1211. [PDF]

open access: yes, 2013
The aim of the study was to make an in-depth analysis of the available material to extend and enhance the current knowledge of the origins and foundation of the former Cistercian abbey of St Mary de Voto at Tintern in County Wexford.
Marshall, Christopher William Fairholm
core  

Sorting grid usage to reduce the catch of undersized narrow‐clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) in fyke net fisheries

open access: yesFisheries Management and Ecology, Volume 31, Issue 6, December 2024.
Abstract Sustainability of natural stocks of crayfish is critical because of their economic and ecological importance. Crayfish (Pontastacus leptodactylus), one of the most important species in Turkish inland fisheries, has been facing serious threats recently.
Mehmet Cilbiz, Celalettin Aydın
wiley   +1 more source

Seasonal variation of gender-specific meat yield of freshwater Crayfish (Pontastacus leptodactylus Eschscholtz, 1823)

open access: yesJournal of Applied Animal Research
The focus of this study was the seasonal and sex-specific variation in meat yield of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823), an important crustacean species for aquaculture and the local market. This popular consumer product
Gülşen Uzun Gören
doaj   +1 more source

Aquatic and riparian plant management: controls for vegetation in watercourses. Case study report [PDF]

open access: yes, 2015
Freely available online via Official URL ...
Brady, Rachael, Thomas, Laura
core  

Standardization of pleopodal egg number in narrow-clawed crayfish ( Pontastacus leptodactylus Eschscholtz, 1823)

open access: yesInvertebrate Reproduction & Development
In this study, the effects of certain biotic factors (length, presence of lesions) and abiotic factors (month of fishing and fishing area) on pleopodal egg production of Pontastacus leptodactylus (Eschscholtz, 1823) were examined to determine the optimal productivity of spawned female crayfish for aquaculture purposes.
Yıldız Bolat   +2 more
openaire   +1 more source

Effects of Dietary Pelargonium sidoides Extract on Growth Performance in Common Carp, Cyprinus carpio [PDF]

open access: yes, 2011
The effects of graded dietary supplementation of Pelargonium sidoides extract on growth performance, feed utilization, and body composition in common carp, Cyprinus carpio, were preliminarily evaluated.
Bircan-Yildirim, Yasemin   +2 more
core  

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