Academic literature on the topic 'Fish biometrics'
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Journal articles on the topic "Fish biometrics"
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Melani, Hellen, Ari B. Rondonuwu, Joudy R. R. Sangari, Fransine B. Manginsela, Silvester B. Pratasik, and Suzanne L. Undap. "Cardinal Fish Otolith Biometrics Banggai Pterapogon kauderni Koumans, 1933 In the Front Waters of Dudepo TPI Dudepo, South Bolaang Mongondow Regency and in the Lembeh Strait, Bitung City." Jurnal Ilmiah PLATAX 11, no. 1 (2023): 74–80. http://dx.doi.org/10.35800/jip.v11i1.44002.
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This study aims to determine the biometric comparison of otoliths of Banggai cardinal fish based on gender and to determine the comparison of otolith biometrics at two locations in the Waters Front of TPI Dudepo Kab. South Bolaang Mongondow and in the Lembeh Strait, Bitung City. Data collection in the field using the roaming survey method. Fishing is done by snorkelling, catching a minimum of 50 individuals representing each size class using Chang net/Sibu fishing gear. The differences in otoliths in male and female sexes have seven different otolith characters in otolith length (OL), otolith width (OW), otolith area (OA) and otolith perimeter (OP), roundness (Rnd), ellipticity (Ell) and aspect ratio (Ar), and three characters that do not show significant differences, namely form factor (Ff), circularity (Cir), rectangularity (Rec). The differences in otoliths based on location in front of the Dudepo TPI and in the Lembeh Strait have seven different otolith characters in otolith length (OL), otolith width (OW), otolith area (OA) and otolith perimeter (OP), roundness (Rnd), ellipticity (Ell). and aspect ratio (Ar), and three characters that do not show significant differences, namely form factor (Ff), circularity (Cir), rectangularity (Rec).
 
 Keywords: Biometrics, cardinal proud fish, comparison
 
 Abstrak
 Penelitian ini bertujuan untuk mengetahui perbandingkan biometrik otolit ikan kardinal banggai berdasarkan jenis kelamin dan mengetahui perbandingan biometrik otolit pada dua lokasi di Perairan Depan TPI Dudepo Kab. Bolaang Mongondow Selatan dan di Selat Lembeh Kota Bitung. Pengambilan data di lapangan menggunakan metode survei jelajah. Penangkapan ikan dilakukan dengan penyelaman snorkling, penangkapan minimal 50 individu yang mewakili setiap kelas ukuran dengan alat tangkap Chang net/Sibu. Perbedaan otolit pada jenis kelamin jantan dan jenis kelamin betina memiliki tujuh perbedaan karakter otolit pada panjang otolit (OL), lebar otolit (OW), area otolit (OA) dan perimeter otolit (OP), roundness (Rnd), ellipticity (Ell) dan aspect ratio (Ar), dan tiga karakter yang tidak menunjukkan perbedaan yang signifikan, yaitu form factor (Ff), circularity (Cir), rectangularity (Rec). Perbedaan otolit berdasarkan lokasi di depan TPI Dudepo dan di Selat Lembeh memiliki tujuh perbedaan karakter otolit pada panjang otolit (OL), lebar otolit (OW), area otolit (OA) dan perimeter otolit (OP), roundness (Rnd), ellipticity (Ell) dan aspect ratio (Ar), dan tiga karakter yang tidak menunjukkan perbedaan yang signifikan, yaitu form factor (Ff), circularity (Cir), rectangularity (Rec).
 
 Kata kunci: Biometrik, ikan banggai kardinal, perbandingan
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Marsaoly, Rafil, Nego Bataragoa, Ari B. Rondonuwu, Adnan S. Wantasen, Unstain Rembet, and Jans Lalita. "Biometrics and Reproduction of Redbelly Yellowtail fusilier Caesio cuning (Bloch, 1791) in Guraping Bay, Halmahera Island, Indonesia." Jurnal Ilmiah PLATAX 12, no. 1 (2023): 114–24. http://dx.doi.org/10.35800/jip.v12i1.49322.
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This study aims to analyze the biometrics of yellowtail fish (length-weight relationship, growth patterns, condition factors, length-fecundity relationship) and reproductive aspects (gonadal maturity level, gonadal maturity index, and fecundity). The yellowtail fish sample used in this study was taken from fishermen's catches in April 2023. A total of 73 male individuals 17.0-29.9 cm total length, 62.00-356.00 gram, 77 female individuals 17.5-8 .1 cm total length, weight 69.88-288.00 grams. Male length-weight relationship W= 0.0140L2.9662 R2= 0.9812, isometric growth pattern. Female W= 0.0166L2.9104, R2 = 0.9633, growth pattern isometric. Condition factor 1.00 ± 0.06 for males and 1.00 ± 0.07 for females. Gonadal maturity levels I, II, III, IV and V for both males and females with the number of individuals at TKG I 65, II 26, III 25, IV 24, and V 10 individuals. The gonadal maturity index with the highest average value was 1.08 ± 0.47 at TKG IV. Fecundity ranged from 1.771-68.425 which was calculated on 28 fish samples with a mean ± SD of 20.158 ± 19.110. Biometric relationship with fecundity F = 102.67L0.1955, R² = 0.0789 shows a very weak relationship between length and fecundity. Keywords: Length-weight, condition factor, maturity, gonad index, fecundity. Abstrak Penelitian ini bertujuan untuk menganalisis biometrik ikan ekor kuning (hubungan panjang-berat, pola pertumbuhan, faktor kondisi, hubungan panjang-fekunditas) dan aspek reproduksi (tingkat kematangan gonad, indeks kematangan gonad, dan fekunditas). Sampel ikan ekor kuning yang digunakan dalam penelitian ini diambil dari tangkapan nelayan pada bulan April 2023. Sebanyak 73 individu jantan 17,0-29,9 cm panjang total, 62,00-356,00 gram, 77 individu betina 17,5-8,1 cm panjang total, berat 69,88-288,00 gram. Hubungan panjang-berat jantan W= 0,0140 L 2,9662 R2= 0,9812, pola pertumbuhan isometrik. Betina W= 0,0166L2,9104, R2 = 0,9633, pola pertumbuhan isometrik. Fakotor kondisi 1,00±0,06 untuk jantan dan betina 1,00±0,07. Tingkat kematangan gonad I, II, III, IV dan V baik jantan maupun betina dengan jumlah individu pada TKG I 65, II 26, III 25, IV 24, dan V 10 individu. Indeks kematangan gonad dengan nilai rata-rata tertinggi yaitu 1,08±0,47 pada TKG IV. Fekunditas berkisar pada 1.771-68.425 yang dihitung pada 28 sampel ikan dengan rata-rata ± SD 20.158 ±19.110. Hubungan biometrik dengan fekunditas F = 102,67L0,1955, R² = 0,0789 menunjukkan hubungan yang sangat lemah antara panjang dan fekunditas. Kata Kunci: Panjang-berat, faktor kondisi, kematangan gonad indeks, fekunditas.
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Silva, Fabricio Nilo Lima da, Raoani Cruz Mendonça, Manoel Luciano Aviz de Quadros, et al. "Good management practices course and social technologies for aquaculture farmers in Marajó, Pará, Brazil." Revista Ibero-Americana de Ciências Ambientais 11, no. 4 (2020): 49–58. http://dx.doi.org/10.6008/cbpc2179-6858.2020.004.0004.
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The objective of this study was capacitate aquaculture farmers and develop social technologies for the culture of tambaqui (Colossoma macropomum) in the archipelago of Marajó (Pará - Brazil). The study was carried out in the municipality of Curralinho by the Federal Institute of Education, Science and Technology of Pará (IFPA) Campus Breves, in March 2020. Two structured questionnaires were applied to 13 course participants who participated in the training. The first was before the course, about fish farming and the adoption of Good Management Practices (BPM) adopted by aquaculture farmers in the Marajó region. The second, composed of closed questions to evaluate the training course, whose themes were: 1) water quality, 2) indicated species, 3) fish transport management, 4) fish quarantine and stock, 5) fish biometrics, 6) liming and fertilizing ponds, 7) management of fish nutrition and health, and 8) fish harvesting and slaughter, were approached in the course. At the end of the lectures / training, a workshop for the production of social technologies was conducted, among students, teachers and aquaculture farmers. Previous knowledge about fish farming and the adoption of BPM were essential for the effectuation of the course. Issues about water quality, biometrics and fish nutrition and health were the ones that called the most attention from aquaculture farmers. Secchi's disk, ichthyometer, hand net and net-tank were the social technologies built. Post-course evaluation was essential to understand the impact of the socialization of knowledge provided to the community. In conclusion, the project reinforced teaching, research and extension actions, involving the community in favor of strengthening aquaculture in the Marajó island, Pará, Brazil.
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Li, Haili. "Biometric-Driven Digital Village Governance: A SWOC-Enabled Model with Fraud Prevention." Journal of Electrical Systems 20, no. 3s (2024): 1929–40. http://dx.doi.org/10.52783/jes.1732.
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In the digital age, the integration of advanced technologies and biometrics plays a pivotal role in transforming governance models. This research introduces an innovative approach to digital village governance, leveraging the potential of biometric data in biomedical applications while incorporating robust fraud detection mechanisms. The proposed model harnesses the power of Swarm Fish Optimization Classification (SWOC) to enhance the accuracy and efficiency of biometric-based authentication systems, ensuring the security of village governance processes. The study outlines the multifaceted components of the Intelligent Digital Village Governance Model, emphasizing its adaptability to the unique needs of rural communities. Central to this model is the utilization of biometric data, such as fingerprints, for user identification, access control, and the delivery of essential services. SWOC, with an optimization and classification algorithm inspired by swarm behavior, is integrated to refine the accuracy of biometric identification and detect fraudulent activities. Experimental results demonstrate the efficacy of SWOC in enhancing the accuracy of biometric-based authentication, thereby strengthening the security of digital village governance. The model's adaptability, scalability, and compliance with ethical standards are also discussed, ensuring responsible deployment in rural settings.
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Ramírez-Coronel, Fernando Joaquín, Oscar Mario Rodríguez-Elías, Edgard Esquer-Miranda, Madaín Pérez-Patricio, Anna Judith Pérez-Báez, and Eduardo Antonio Hinojosa-Palafox. "Non-Invasive Fish Biometrics for Enhancing Precision and Understanding of Aquaculture Farming through Statistical Morphology Analysis and Machine Learning." Animals 14, no. 13 (2024): 1850. https://doi.org/10.3390/ani14131850.
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This research addresses the problem of biomass estimation and fish development monitoring by developing and meticulously validating a computer-vision-interpretable methodology for fish biometrics based on the extraction of statistical features of shape and size through a signature function. This is done by comparing manually extracted features in machine learning predictions against the computer vision (image feature extraction) machine learning predictions. This research shows promising results in statistical accuracy and error metrics, especially the computer vision methodology plus artificial neural networks for biomass prediction. It is concluded that the signature-function-based methodology plus the neural networks regression is competitive for biomass estimation and provides a powerful interpretable tool for species morphology development research. As a result, from a better understanding of fish development and biomass estimation, the aquaculture sector can improve production, wasting less animal food and detecting fish welfare problems through deformity detection, which translates into reduced costs and improved quality of animal meat.
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Mutlu, Erhan. "A Package of Script Codes, POSIBIOM for Vegetation Acoustics: POSIdonia BIOMass." Journal of Marine Science and Engineering 11, no. 9 (2023): 1790. http://dx.doi.org/10.3390/jmse11091790.
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Macrophytes and seagrasses play a crucial role in a variety of functions in marine ecosystems and respond in a synchronized manner to a changing climate and the subsequent ecological status. The monitoring of seagrasses is one of the most important issues in the marine environment. One rapidly emerging monitoring technique is the use of acoustics, which has advantages compared to other remote sensing techniques. The acoustic method alone is ambiguous regarding the identities of backscatterers. Therefore, a computer program package was developed to identify and estimate the leaf biometrics (leaf length and biomass) of one of the most common seagrasses, Posidonia oceanica. Some problems in the acoustic data were resolved in order to obtain estimates related to problems with vegetation as well as fisheries and plankton acoustics. One of the problems was the “lost” bottom that occurred during the data collection and postprocessing due to the presence of acoustic noise, reverberation, interferences and intense scatterers, such as fish shoals. Another problem to be eliminated was the occurrence of near-bottom echoes belonging to submerged vegetation, such as seagrasses, followed by spurious echoes during the survey. The last one was the recognition of the seagrass to estimate the leaf length and biomass, the calibration of the sheaths/vertical rhizomes of the seagrass and the establishment of relationships between the acoustic units and biometrics. As a result, an autonomous package of code written in MATLAB was developed to perform all the processes, named “POSIBIOM”, an acronym for POSIdonia BIOMass. This study presents the algorithms, methodology, acoustic–biometric relationship and mapping of biometrics for the first time, and discusses the advantages and disadvantages of the package compared to the software dedicated to the bottom types, habitat and vegetation acoustics. Future studies are recommended to improve the package.
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Larasati, Aulia Nur, Ridwan Affandi, Mohammad Mukhlis Kamal, and Dudi Muhammad Wildan. "BIOMETRIC CHARACTERISTICS AND STRESS LEVELS OF GLASS EEL (Anguilla sp.) IN THE SOUTHERN ESTUARIES OF SUKABUMI, WEST JAVA." Jurnal Teknologi Perikanan dan Kelautan 16, no. 1 (2025): 1–11. https://doi.org/10.24319/jtpk.16.1-11.
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Palabuhanratu Bay is the terminating flow for some rivers, i.e. the Cimandiri River, Ciletuh River, Cikaso River, and Cibuni River, where the estuary is the entry route for glass eels (Anguilla spp.) or fish seeds from sea waters to these estuaries. Different rivers have different water quality conditions that may imply differences in the quality and quantity of eels entering the estuary. This research aims to determine locations with superior seeds, and seeds with low quality based on studying biometric characteristics and stress levels of eel seeds in several estuaries in the south of Sukabumi, West Java. The information gathered is subject to determining the highly recommended use of glass eels as seeds in eel aquaculture, as well as determining the area where habitat rehabilitation and conservation. The research was carried out in four locations, namely the Cimandiri, Ciletuh, Cibuni, and Cikaso River Estuaries, from December 2021 to January 2022, the peak time for eel seed migration. The parameters observed include water physics and chemistry, biometrics, and blood glucose. The research results show that each location has different physical and chemical water parameter values but has relatively the same stress level. The best biometric value of eel fish seeds was found in eel seeds originating from the Cimandiri River, while the lowest one was at the mouth of the Cibuni River. Therefore, eels that are suitable for cultivation activities come from the Cimandiri River Estuary, while the eel location that needs conservation is the Cibuni River Estuary.
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Hubbard, Jennifer. "Johan Hjort: The Canadian Fisheries Expedition, International Scientific Networks, and the challenge of modernization." ICES Journal of Marine Science 71, no. 8 (2014): 2000–2007. http://dx.doi.org/10.1093/icesjms/fsu086.
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Abstract By leading the Canadian Fisheries Expedition of 1914–1915 Johan Hjort took the opportunity to do far more than just survey herring, other fish stocks, and the hydrography of Canadian Atlantic waters. He also attempted to improve the backward fish-processing technologies used in the local fisheries, an agenda blocked by the Canadian government. Hjort did succeed markedly, however, in introducing Canadian scientists to the International Council for the Exploration of the Sea's new scientific methods for fisheries research. He and his colleagues offered training in the new dynamic oceanography as well as population demographic studies and biometrics for studying fish populations, races, and other units. His extroverted leadership-initiated lasting linkages between Canadian and Scandinavian scientists, and created an international network of fisheries biologists.
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Ghazwan, Muhammad I. "Replacing Formalin with Alcohol and its Effect on Preserved Fish Specimens." IOP Conference Series: Earth and Environmental Science 1259, no. 1 (2023): 012085. http://dx.doi.org/10.1088/1755-1315/1259/1/012085.
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Abstract This study aims to formulate an alternative solution for Formalin for preserving fish as study specimens for long periods. The main reason for finding a solution instead of formalin is to get rid of the negative effects of this solution on those who work with it, as well as to better preserve the bodies of fish. Hence, three new solutions were proposed to replace formalin. Thus, Formalin, in turn, may enter the composition of a small part of these solutions to give better results and for long periods of keeping specimens. All solutions prepared in this study participated in being acidic as in formalin. Two solutions succeeded in compensating for the use of formalin in preserving fish bodies for a period of six months, with a lesser effect on some of the studied biometrics of fish kept in these two solutions.
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Ghazwan, Mohammed Inad. "A Study of Some Biological Aspects of Pacu Piaractus Brachypomus (G. Cuvier, 1818)." Diyala Agricultural Sciences Journal 13, no. 2 (2021): 10–15. http://dx.doi.org/10.52951/dasj.21130202.
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The present study attempts to shed light on some biological aspects and characteristics of Piaractus brachypomus, including some biometrics, phenotypic and feeding pattern that characterizes this species. Besides, the study touches upon the body shape and the Otolith. These fish species have recently been seen frozen in the Iraqi local market. The standard length of fish specimens in this study reach 26.55cm it exceeded the specimens of Pacu fish collected from other studies from other countries, As well the specimens weight was 632gm it exceeded other studies mentioned in this manuscript. As the irregularity in the distribution of teeth rows, especially in the lower jaw was clear in our specimens. The average weight of some skull bones of Piaractus brachypomus specimens is 2.25g, which gives evidence of the heaviness of the bones of this species.
Dissertations / Theses on the topic "Fish biometrics"
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Costa, Filho João. "Relações da taxa RNA/DNA e parâmetros morfológicos no crescimento de juvenis de robalo-flecha (Centropomus undecimalis) cultivados." Universidade do Estado de Santa Catarina, 2013. http://tede.udesc.br/handle/handle/869.
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Previous issue date: 2013-07-09<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The marine fish farming and culture of snook, Centropomus
undecimalis, have good prospects for commercial development in Brazil.
In this regard, there is a need to expand studies on the evaluation of
growth on snook, which can be realized by morphological or
biochemical methods. The nutritional status and growth of fish can be
influenced by several factors and their interactions, including genetic and
environmental conditions, such as diet, different temperatures and
salinities. Morphological analysis allows an investigation of the
biometric data obtained from the body dimensions which are analyzed
based on a mathematical relationship through correlation and linear
regression equation. Regarding the biochemical methods, the most used
are the quantification of DNA, RNA, proteins and determination of the
RNA/DNA, protein/DNA ratios. Once the cell metabolism is usually
associated with the nutritional status of the organism higher amounts of
these components indicate greater biochemical activity of cells and
protein synthesis. The results from this study will provide useful
information related to the biology and cultivation of snook, promoting
the application of biometric analysis and promoting a jumpstart for the
application of biochemical analysis, cellular metabolism involved in the
culture snook<br>A piscicultura marinha e o cultivo do robalo-flecha possuem boas
perspectivas para o desenvolvimento comercial no Brasil. Neste sentido,
existe a necessidade da ampliação de estudos relacionados com a
avaliação do crescimento em robalos, que pode ser realizado por
métodos morfológicos ou bioquímicos. A condição nutricional e o
crescimento dos peixes podem ser influenciados por vários fatores e suas
interações, incluindo a genética e as condições ambientais, como a
alimentação, diferentes temperaturas e salinidades. A análise
morfológica permite uma investigação das características biométricas,
obtidas por meio das dimensões corporais, com base na sua relação
matemática pela correlação e equação de regressão linear. Em relação
aos métodos bioquímicos, os mais utilizados são a quantificação do
DNA, RNA, proteínas e determinação das razões RNA/DNA,
proteína/DNA. Uma vez que o metabolismo celular normalmente está
relacionado com a situação nutricional do organismo, maiores
quantidades desses componentes indicam maior atividade bioquímica
das células e síntese proteica. Os resultados deste estudo permitem
incrementar informações relacionadas à biologia e ao cultivo dos robalos
aperfeiçoando a aplicação das análises biométricas e promovendo um
salto inicial para a aplicação de análises bioquímicas, envolvidas com o
metabolismo celular, no cultivo do robalo-flecha
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Nogueira, Barbara Arruda. "Características tecnológicas de espécies de pescado com potencial de criação na região sudoeste do Paraná." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1767.
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CNPq; CAPES<br>A carne de pescado possui composição química particular que lhe confere elevado valor nutricional. Entretanto, esse alimento é identificado pela alta perecibilidade, aspecto esse muitas vezes apontado como barreira ao consumo de pescado. A região Sudoeste do Paraná, paralela à realidade do país, é caracterizada pelo baixo consumo de pescado; e uma das estratégias apontadas para o aumento do consumo dessa importante fonte proteica é o incentivo à produção de outras espécies além da tilápia. Dentro desse contexto, faz-se necessário o conhecimento a respeito das características da carne de pescado. Nesse sentido, o objetivo do presente trabalho foi avaliar o potencial tecnológico das espécies pacu, carpa capim e catfish. Em um primeiro momento realizou-se a avaliação química, frescor e biométrica, sob dois métodos estatísticos descritivos distintos, das três espécies; e avaliou-se a capacidade discriminante das variáveis em estudo. Em um segundo momento buscou-se avaliar os efeitos de dois processos distintos de lavagem (ácida e alcalina) no que diz respeito à remoção de nitrogenados e pigmentos e na capacidade emulsificante das proteínas da base proteica obtida. A terceira fase deste trabalho objetivou-se otimizar a metodologia em CG-EM para análise de compostos geosmina e MIB (2-metilisoborneol), compostos esses responsáveis pelo sabor/odor a terra e mofo em pescados de água doce. Os resultados revelaram altos teores de proteína e baixos teores de lipídios para as três espécies. A comparação entre médias e medianas revelaram simetria apenas para os valores de proteínas e medidas biométricas. Os lipídios quando avaliados apenas pelas médias superestimaram os teores para todas as espécies. Correlações entre medidas corporais e rendimento de filé apresentaram baixa relação, independente da espécie analisada, sendo a melhor equação de predição a que relaciona peso total e peso de filé. As variáveis biométricas foram as melhores discriminantes entre as espécies. Quanto à avaliação das lavagens, verificou-se que os processos ácido e básico foram igualmente (p ≥ 0,05) eficientes (p ≤ 0,05) na remoção dos compostos nitrogenados nas polpas de pescado. No que diz respeito à extração de pigmentos, eficiência de remoção foram registradas apenas para a espécie pacu, quando os dados foram avaliados pelos parâmetros L*, a*, b*. Quando avaliados pela diferença total de cor (ΔE) antes e após as lavagens, para ambos os processos (ácido/alcalino), os ΔE revelaram factível percepção a olho nu para todas as espécies. Catfish foi caracterizado como o pescado que apresenta a carne mais clara e a lavagem básica foi apontada como a mais eficiente para remoção de pigmentos para essa espécie. As bases proteicas obtidas pela lavagem alcalina apresentaram maior capacidade emulsificante (p ≤ 0,05) quando comparadas às polpas sem lavar e lavadas em processo ácido. A metodologia aplicada para quantificação de MIB e geosmina permitiu constatar que o método de extração e purificação dos analitos apresentou baixa recuperação e que estudos futuros devem ser desenvolvidos para identificação e quantificação de MIB e geosmina em amostras de pescado.<br>The fish meat has a particular chemical composition which gives its high nutritional value. However, this food is identified for being highly perishable and this aspect is often named as a barrier to fish consumption. The southwestern Paraná region, parallel to the country's reality, it is characterized by low fish consumption; and one of the strategies aimed at increasing the consumption of this important protein source is encouraging the production of other species besides tilapia. Within this context, it is necessary to know about the meat characteristics. In this sense, the objective of this study was to evaluate the technological potential of pacu, grass carp and catfish species. To do so, at first, it was discussed the chemical and biometric assessment under two distinct descriptive statistical methods, of the three species; and it was also evaluated the discriminating capacity of the study. In a second moment, an evaluation of effects done by two different processes of washing (acid and alkaline) regarding the removal of nitrogen compounds, pigments and the emulsifying ability of the proteins contained in the protein base obtained. Finally, in the third phase, it was aimed to realize the methodology optimization in GC-MS for the analysis geosmin and MIB (2-metilisoborneol) compounds that are responsible for taste/smell of soil and mold in freshwater fish. The results showed a high protein and low lipid content for the three species. The comparison between means and medians revealed symmetry only for protein values and biometric measurements. Lipids, when evaluated only by the means, overestimate the levels for all species. Correlations between body measurements and fillet yield had low correlation, regardless of the species analyzed, and the best prediction equation relates the total weight and fillet weight. The biometric variables were the best discriminating among the species. The evaluation of the washings, it was found that the acidic and basic processes were equally (p ≥ 0.05) efficient (p ≤ 0.05) for the removal of nitrogen compounds on the fish pulps. Regarding the extraction of pigments, a removal efficiency was recorded only for the pacu species, the data were assessed by the parameters L *, a *, b *. When evaluated by the total color difference (ΔE) before and after washing for both processes (acid/alkaline) the ΔE proved feasible perceived by naked eye for all species. The catfish was characterized as the fish that presents the clearest meat with the basic washing considered the most effective in removing pigments for this species. Protein bases obtained by alkaline washes have higher emulsifying capacity (p ≤ 0.05) when compared to unwashed and washed in acid process pulps. The methodology applied for the quantification of MIB and geosmin, allowed to establish that the method of extraction and purification of analytes had low recovery and future studies should be developed for identification and quantification of MIB and geosmin on fish samples.
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Shirdhankar, M. M. "Studies on genetic architecture and predicted response in biometrical traits of sexually breeding Artemia." Thesis, 1999. http://eprints.cmfri.org.in/7105/1/TH-83_Shi.pdf.
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A major problem encountered by the aquaculturists is the availability of
the right kind of food, especially the Iive food, for rearing the larvae and
juveniles of the finfishes and shellfishes under controlled systems. Artemia, a
phyllopodus small crustacean, popularly called as brine shrimp, have been used as
an ideal food for finfishes and shellfishes throughout the world. They are being
offered not only to the fishes, but also to other diversified groups of animals. It
has been estimated that Artemia have been fed to more than 80 % of marine
animals cultured so far, as a sole diet or in combination with other food sources
(Kinne, 1977)
The life cycle of Artemia is composed of different stages like cyst,
nauplii, metanauplii and adult, and interestingly all these stages are excellent live
foods. The freshly hatched nauplii of Artemia are the most extensively used
form. It has been estimated that over 2000 metric tons of Artemia cysts are
hatched annually and the nauplii are used as live food (Stappen, 1996). The
Artemia cyst, which is the dormant form of egg, is also an excellent and
convenient source of food for larval rearing The adult as well as pre-adult
Artemia are also widely used as hlc foud fur shrimps, prawns and juvenile
fishes. The role of , Artemia as live food in crustacean hatcheries is very
substantial.
Book chapters on the topic "Fish biometrics"
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Mathur, Monika, and Nidhi Goel. "FishNet: Automated Fish Species Recognition Network for Underwater Images." In Multimodal Biometric Systems. CRC Press, 2021. http://dx.doi.org/10.1201/9781003138068-3.
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Olsvik, Erlend, Christian M. D. Trinh, Kristian Muri Knausgård, et al. "Biometric Fish Classification of Temperate Species Using Convolutional Neural Network with Squeeze-and-Excitation." In Lecture Notes in Computer Science. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22999-3_9.
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dos Santos, Magno, Rosimery Menezes Frisso, Vonin da Silva e. Silva, et al. "Parasitic fauna in tambaqui (Colossoma macropomum) from fish farms in the municipality of Rorainópolis-Roraima-Brazil." In Agricultural and Biological Sciences: Foundations and Applications. Seven Editora, 2024. http://dx.doi.org/10.56238/sevened2024.023-001.
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Fish farming is a promising activity in the Western Amazon. The tambaqui (Colossoma macropomum) stands out for its good zootechnical performance, supply of fingerlings, rusticity and consumer market, being the most cultivated species (90% of all production) and consumed in Roraima. Like all confined animal production, there is a risk of pathogens and diseases emerging. The tambaqui can be affected by a wide variety of parasites, bringing irreversible damage both economically and healthily. The objective of this study was to identify and quantify parasites present in gills, intestine and tambaqui muscle from five fish farms in Rorainópolis-RR, as well as to correlate results with biometric variables and to estimate parasite prevalence and abundance. For this, 25 tambaqui specimens were acquired in five fish farms in the municipality of Rorainópolis-RR. Parasites of the class Monogenea (Girodactilideo sp.), Phylum Nematoda (Procamallanus (Spirocamallanus sp.) and Klossinemella sp.) and the class Myxozoa (Myxobolus sp.) were recorded . In two farms there was a 100% prevalence of infestation by Monogenea. The standard weight-length ratio curve (y=0.01x3.27 (R2=0.84)) was calculated, where the relative condition factor between parasitized and non-parasitized individuals was calculated, whose values did not differ statistically (p=1) by the Mann Whitney 'U' test. In this sense, it is important to properly manage and maintain the sanitary status of tambaqui production in the southern region of Roraima.
Conference papers on the topic "Fish biometrics"
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Kunapinun, Alisa, William Fairman, Paul S. Wills, Sahar Mejri, Magaleate Kostelnik, and Bing Ouyang. "Innovative aquaculture biometrics analysis: harnessing IR lasers and ToF cameras for microscopic fish larvae tracking." In Ocean Sensing and Monitoring XV, edited by Weilin Hou and Linda J. Mullen. SPIE, 2024. http://dx.doi.org/10.1117/12.3014053.
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Pin, Yoong Hou, Lin Boon Hoe, Kenneth Teo Tze Kin, and Ismail Saad. "Swimming Motion Control for Biometric Fish Robot by Utilizing Turning Coefficient." In 2011 2nd International Conference on Intelligent Systems, Modelling and Simulation (ISMS). IEEE, 2011. http://dx.doi.org/10.1109/isms.2011.76.
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Niedzwiedz, Gerd. "Underwater Long-Term Observation at the Largest German Artificial Reef in the Baltic Sea." In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92203.
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The Baltic Sea is one of the most frequented regions in the world. The Baltic neighbouring states more and more see the need to adapt their economic interests to the given ecological conditions. This can not always be done sufficiently, which can be seen at the example of coastal fishery in some of these countries. Owing to the critical condition of economically important fish stocks, selective fishing and fish-stock saving measures have become main fields of research. Supported by the European Union and by the federal state government we have tried in Mecklenburg-Vorpommern during the last four years to investigate the effects of an artificial Baltic reef with respect to fishing. For this purpose more than 1300 reef elements — made of a special sort of concrete and having different shapes and size — have been arranged on an area of 200 × 200 m at a water depth of 12 m about 1.5 m away from the coast. Over a period of almost four years different methods and techniques have been applied to observe and record the effects of these structures on the natural environment in a long-term investigation. Continuous video-optical underwater observation using up to nine simultaneously controlled underwater cameras proved to be a special technical challenge. Important results have been gained from a monitoring with research divers and from a defined test and comparison fishing done once every month. Various fishing methods have been applied — also those which are normally not common in that region. A special low-cost variant of a remote controlled underwater stereo photo camera has been developed and built in order to get biometric data of the fish without catching it.
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Torres Junior, Audalio Rebelo, Débora Batista Pinheiro Sousa, and Raimunda Nonata Fortes Carvalho Neta. "An integrated model supporting histological and biometric responses as predictive biomarkers of fish health status." In INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2014 (ICCMSE 2014). AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4897807.
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Duya, Novia, Risma Hurhidayah, and Jarulis. "Biometric Diversity of Chondrichthyes Caught by Bengkulu City Fishermen Observed at the Fish Auction Site (TPI) Pulau Baai Bengkulu." In 3rd KOBI Congress, International and National Conferences (KOBICINC 2020). Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210621.011.
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Urichianu, Adrian, Valeriu Jurat, and Vasile Triboi. "E-LEARNING ROWING TECHNIQUE, PERFORMED BY JUNIOR ROWERS." In eLSE 2014. Editura Universitatii Nationale de Aparare "Carol I", 2014. http://dx.doi.org/10.12753/2066-026x-14-264.
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The aim of this demonstration of e-Learning technique by paddling through computerized video analysis, carried out on the ergosim type equipment by the junior rowers. This scientific approach has led to organizing a research of an experimental study using the following methods: 1. Analysis of methodical-scientific literature. 2. Video recording of gymnastics exercises. Use of computerized programs: "Pinnacle Studio", "Kinovea" and "Physics ToolKit". 3. Postural method of movement orientation. 4. Statistical method, by means of "KyPlot" computerized program. In this pedagogic experiment there has been included a number of six athletes from the Olympic Youth Center, Snagov, Romania. In this stage the athletes trained by running ,using an ergometer, weightlifting in the gym and rowing on the water. Results. Demonstration and identification of kinematic and dynamic rowing motion on the ergometer performed by the junior rowers 16-18 of age , on the basis of biomechanical video analysis, the trajectories of body segments (CGG, shoulder and Fist) and the resultant linear speed and force showing their influence on different phases of the ideal technical rowing motion. Conclusions. The correlative analysis between parameter technical training and performance results in competitions of junior rowing 16 to 18 years point out significant correlations in the attack phase, in the initial position between the speed of the wrist using the performance achieved in the competition, with the other biometric indicators of the rowing movement phases, the performance achieved in the three contests. These correlations are insignificant at P 0.05 >, highlighting the values of speed and force at shoulder and wrist level. The use of e-learning in improving the technique of rowing has allowed the development of a training program to help increase performance in competitions on rowing machines and the athlete recruitment for rowing on water.
Reports on the topic "Fish biometrics"
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Geist, David. Making a Deal with the Devilfish: Biometric-Informed Screening Technology – Fish Protection Prize - CRADA 514. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1827807.
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