scholarly journals Morphology and growth pattern of Nike fish (amphidromous goby larvae) in Gorontalo Waters, Indonesia

2020 ◽  
Vol 1 (1) ◽  
pp. 1-7
Author(s):  
Nuralim Pasisingi ◽  
Abdul Hafidz Olii ◽  
Sitty Ainsyah Habibie
Keyword(s):  
Growth Pattern ◽  
Local Community ◽  
Average Length ◽  
Mesh Size ◽  
Fish Population ◽  
Growth Patterns ◽  
Conservation Strategy ◽  
Recruitment Pattern ◽  
Fish Samples ◽  
Biological Performance

Nike is a terminology used by Gorontalo local community to name schooling of minuscule amphidromous goby fish that has a limited appearance in Gorontalo waters. Understanding the biological performance of Nike fish is vital for implementing management and conservation strategy. This study aims to analyze daily recruitment and to determine growth patterns of Nike fish population in nature. Sampling was conducted in the Gorontalo waters during March, April, and May 2018 using a fish net with a mesh size of 0.5 inches. The duration of the appearance of Nike schooling in waters varies every month. The number of fish samples collected each month in this study ranged from 150 to 300 individuals. This study reveals that body color diversity and morphology of Nike fish strongly alleged to depend on where and how long they appear in the waters. Based on the daily recruitment pattern, Nike fish population distributed in Gorontalo waters is predicted to consist of individuals from multi-generation with an average length range of 1.848–2.805 cm. During the sampling time, a positive allometric growth pattern indicated by the population.

scholarly journals Fish Community Assemblages of Mining-Impacted Freshwaters at Prestea, Ghana

2018 ◽  
pp. 1-9
Author(s):  
Osei O. Antobre ◽  
Nat Owusu-Prempeh ◽  
Michael J. Twumasi-Ankrah
Keyword(s):  
Fish Community ◽  
Average Length ◽  
Mesh Size ◽  
Fish Diversity ◽  
Freshwater Ecosystem ◽  
Fish Community Structure ◽  
Average Width ◽  
H Index ◽  
Community Assemblage ◽  
Fish Samples

The study evaluated the fish community assemblage in the sections of the Subri river, the Ankobra river, and the “galamsey” pond within the Prestea community as impacted by alluvial mining activities. Gill nets of length 10 m and mesh size 1.27 cm were used to trap fish of average length 25.25 cm whilst cane baskets were used to trap fish of average width 10.40 cm using the catch and recapture method. All the 46 fish samples identified belong to 10 genera and 5 families. The Chichlidae was the dominant family, accounting for 60% of the total families observed. With an H’ index of 1.57 the Subri river had the most fish diversity in comparison with the Ankobra river and the “galamsey” pond, which had 1.21 and 0.71, respectively. Similarly, the Subri river had a more complex fish community structure than the Ankobra and “galamsey” pond. The dominant species, Oreochromis niloticus, has not yet been evaluated by the IUCN, but the least dominated Brienomyrus brachyistus could be regarded as “least concern”. Notwithstanding, these fish are essential for food by the local communities. There is a possibility that the alluvial mining might have influenced the complexities of fish species communities. Thus conservation efforts must be promoted to sustain fish communities and overall freshwater ecosystem health.

scholarly journals Fly fish growth pattern (Decapterus spp) in Likupang Water, Nort Sulawesi

2019 ◽  
Vol 7 (1) ◽  
pp. 113
Author(s):  
Inggrid M. F Akerina ◽  
Silvester B. Pratasik ◽  
Nego E. Bataragoa
Keyword(s):  
Size Distribution ◽  
Growth Pattern ◽  
Growth Patterns ◽  
Fish Growth ◽  
Purse Seine ◽  
Relationship Analysis ◽  
Weight Relationship ◽  
Fish Samples

This study was aimed to find out the size distribution of scad (Decapterus spp) caught by Likupang fishermen and to find out theirgrowth patterns. Fish samples were collected by traditional purse seine fishermen in Likupang waters. Total catches were 139 individuals consisting of 89 D. macarellus and 50 D. macrosoma.The former was dominated by size of 19.2-20.6 cm, while the latter was dominated by size of 13.1-14.1 cm. Length-weight relationship analysis showed that the growth patterns of D. macarellus and D. Macrosoma were isometric meaning that the increase in length is consistent with weight gain.Keywords: Likupang, Decapterus spp and growth patternsABSTRAKPenelitian ini bertujuan untuk mengetahui distribusi ukuran ikan layang (Decapterus spp) yang ditangkap oleh nelayan Likupang and untuk menduga pola pertumbuhannya. Sampel ikan diperoleh nelayan tradisional pukat cincin di perairan Likupang.Total hasil tangkapan adalah 139 ekor terdiri dari 89 ekor  D. macarellus dan 50 D. macrosoma. Hasil tangkapan D. macarellus didominasi oleh kelas ukuran 19,2-20,6 cm, sedangkan D. macrosomadidominasi oleh kelas ukuran 13,1-14,1 cm. Analisis hubungan panjang berat menunjukkan bahwa pola pertumbuhan ikan D. macarellusdan D. macrosoma bersifat isometrik yang artinya pertambahan panjang selaras dengan pertambahan berat.Kata kunci: Likupang, Decapterus spp dan Pola pertumbuhan

scholarly journals The Biological Aspect of Mackerel Scad (Decapterus Macarellus Cuvier, 1833) In Samudera Hindia (West Sumatera Block)

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 92
Author(s):  
Heri Widiyastuti ◽  
Andina Ramadhani Putri Pane ◽  
Moh Fauzi ◽  
Thomas Hidayat
Keyword(s):  
Indian Ocean ◽  
Sex Ratio ◽  
Average Length ◽  
Mesh Size ◽  
Growth Patterns ◽  
Purse Seine ◽  
West Sumatra ◽  
The Indian Ocean ◽  
Biological Aspects ◽  
First Maturity

Mackerel scad (Decapterus macarellus) is one of the important economical caught in the Indian Ocean West Sumatra waters captured using purse seine. Increased production of mackerel scad will lead to increased exploitation, causing population changes. Therefore, research was carried out to find out the biological aspects of the fish so that resource management can be done. The sampling was conducted in Lampulo, Sibolga, and Air Bangis from February to November 2016 with total samples of 716 fishes. This research was conduct to study some biological aspects which consist of size distribution, length-weight relationship, sex ratio, gonad maturity level, the length at first capture, and length of the first maturity in Indian ocean west Sumatera waters. The results showed that the size of the mackerel scad had ranged between 16 - 33.6 cm FL and the average was 24.5 cm. Growth patterns are allometric negative, sex ratio male and female in an unbalanced condition. The mackerel scad is most caught by purse seine in maturity condition. The average length at first captured was 25.08 cm FL and length at first mature was 20.47 cm FL. These were an ideal biological condition and must be maintained because it provides an opportunity for fish to increase the population. The mesh size purse must follow the Ministry of Maritime Affairs and Fisheries Regulation Number 71/2016 that adjusted for minimum at 1 inch. Keywords: Mackerel scad, Indian Ocean, purse seine

scholarly journals RESPONS DAN POLA PERTUMBUHAN BENIH ikan baung (Hemibagrus nemurus) DARI TIGA GENERASI DIPELIHARA PADA WADAH BUDIDAYA YANG BERBEDA

2018 ◽  
Vol 13 (3) ◽  
pp. 201 ◽  
Author(s):  
Irin Iriana Kusmini ◽  
Anang Hari Kristanto ◽  
Jojo Subagja ◽  
Vitas Atmadi Prakoso ◽  
Fera Permata Putri
Keyword(s):  
Growth Pattern ◽  
Average Length ◽  
Economic Value ◽  
Stocking Density ◽  
Growth Patterns ◽  
Growth Measurement ◽  
Commercial Feed ◽  
Survival And Growth ◽  
Specific Growth Rates ◽  
New Generation

Ikan baung (Hemibagrus nemurus) merupakan salah satu komoditas ikan air tawar ekonomis tinggi di Indonesia. Untuk meningkatkan produktivitas budidaya, maka dilakukan pembentukan generasi baru populasi terbaik agar diperoleh generasi yang lebih produktif dan cepat tumbuh. Tujuan penelitian ini adalah untuk mengevaluasi respons dan pola pertumbuhan benih ikan baung generasi-1 (G-1), generasi-2 (G-2), dan generasi-3 (G-3) pada wadah budidaya yang berbeda. Penelitian dilakukan di kolam semi-permanen, kolam beton dan jaring apung di Instalasi Riset Plasma Nutfah Perikanan Air Tawar, Cijeruk dengan tiga ulangan. Benih yang digunakan berukuran panjang rata-rata 1,54 ± 0,22 cm; dan bobot 0,06 ± 0,01 g; dipelihara dengan padat tebar 50 ekor/m2. Selama 15 hari pertama pemeliharaan benih diberi pakan Tubifex dan pakan komersial dengan kadar protein 41% sebanyak 5% per hari dengan frekuensi pemberian pakan dua kali sehari, untuk pemeliharaan selanjutnya pakan yang diberikan berupa pakan komersil saja. Pemeliharaan dilakukan selama 45 hari, dan pengukuran pertumbuhan dilakukan 15 hari sekali. Parameter yang diamati meliputi laju pertumbuhan spesifik, sintasan, dan pola pertumbuhan. Sebagai data pendukung dilakukan pengukuran kualitas air dan kelimpahan plankton. Hasil penelitian menunjukkan bahwa pertumbuhan bobot dan panjang benih ikan baung G-2 lebih unggul dibanding dengan G-1 dan G-3, sedangkan wadah budidaya yang terbaik adalah pada pemeliharaan di kolam semi-permanen dengan bobot ikan 6,79 ± 4,085 g dan panjang 8,46 ± 1,967 cm. Pertumbuhan ikan baung yang dipelihara di kolam semi-permanen menunjukkan perbedaan yang nyata (P<0,05) terhadap wadah pemeliharan lainnya. Pola pertumbuhan ikan baung dari tiga wadah budidaya bersifat allometrik negatif (b<3).Asian redtail catfish (Hemibagrus nemurus) is one of the high economic value of freshwater fish commodities in Indonesia. In order to increase aquaculture productivity, production of new generation from the best population was conducted to obtain a more productive and fast-growing generation. The purpose of this study was to evaluate the response and growth pattern of G-1, G-2, and G-3 fingerlings of Asian redtail catfish on different rearing media. The study was conducted in semi-permanent ponds, concrete ponds, and floating nets in Research Installation of Freshwater Fisheries Germplasm, Cijeruk with three replications. The stocking density of each treatment was 50/m2, with the fingerlings average length of 1.54 ± 0.22 cm and weight of 0.06 ± 0.01. During the first 15 days, fish were fed with Tubifex and commercial feed (41% crude protein; fed 5% per day) with twice per day of feeding frequency. Fish were reared for 45 days, and growth measurement was conducted by sampling every 15 days. Parameters observed including specific growth rates, survival, and growth patterns. As supporting data, water quality, and plankton abundance were measured. The results showed that weight and length gain on the second generation (G-2) of Asian redtail catfish was superior compared to G-1 and G-3, whilst the best rearing media was found in semi-permanent ponds with the weight of 6.79 ± 4.085 g and the length of 8.46 ± 1.967 cm. The growth pattern of Asian redtail catfish from three rearing media was negative allometric (b<3).

scholarly journals HUBUNGAN PANJANG- BERAT, KEBIASAANMAKAN DAN KEMATANGANGONAD IKAN BILIH (Mystaecoleucus padangensis) DI DANAUTOBA, SUMATERAUTARA

2017 ◽  
Vol 3 (6) ◽  
pp. 351
Author(s):  
Chairulwan Umar ◽  
Endi Setiadi Kartamihardja
Keyword(s):  
Growth Pattern ◽  
Average Length ◽  
Mesh Size ◽  
Food Habit ◽  
Average Weight ◽  
Additional Food ◽  
Gonadal Maturity ◽  
West Sumatra ◽  
Biological Aspects ◽  
Intensive Fishing

Ikan bilih (Mystacoleucus padangensis Bleeker) diDanau Toba adalah jenis ikan introduksi dari Danau Singkarak, Sumatera Barat. Pada saat ini terdapat kecenderungan ukuran individu menurun, hal ini antara lain disebabkan oleh penangkapan yang intensif menggunakan alat tangkap bagan apung dengan ukuran mata jaring relatif kecil (< 1,25 inci). Penelitian ini bertujuan untuk melihat beberapa aspek biologi meliputi ukuran panjang dan bobot, kebiasaan makan, tingkat kematangan gonad dan fekunditasnya. Hasil penelitian diperoleh hubungan panjang dan bobot individu bersifat allometrik positif dengan panjang total rata-rata 12,6 cmdan bobot rata-rata 19,8 g/ekor. Dari analisa lambung ikan bilih pemakan detritus (78,2 – 92,9 %), fitoplankton dan zooplankton sebagai pakan tambahan (4,9 – 11,5 %) serta seresah tumbuhan sebagai pakan pelengkap (1,9 – 1,8 %). Hasil pengamatan ikan bilih yang matang gonaddiperoleh nilai fekunditasnya rata-rata berkisar antara 5.262 – 16.117 butir telur. Hasil pengamatan TKG dan jumlah telur menunjukkan ikan bilih dapat bertelur danmemijah sepanjang tahun dan berkembang dengan baik sehingga ikan ini tetap lestari walaupun adanya eksploitasi yang cukup intensif. Bilih (Mystacoleucus padangensis Bleeker) in Toba Lake was introduce from Singkarak Lake,West Sumatra. At present the growth was decreased, it caused by intensive fishing and the uses of lift net with small mesh size (under 1,25 inch). This research aims to know some biological aspects of bilih such as length - weight, relationship food habit, level of gonadal maturity, and fecundity. The results showed that growth pattern of bilih positive allometric with average length of about 12,6 cm and average weight of about 19,8 gr/each. Bilih detritus feeding (78,2 – 92,9%), phytoplankton and zooplankton as additional food (4,9 – 11,5%) and seresah tumbuhan as complement food (1,9 – 1,8%). Fecundity of ranged from 5.262 – 16.117. TKG observation and eggs gain showed that bilih could development and spawn in long years and growth well enough, so that bilih can stlll growth rapidly eventhough there is an exploitation.

scholarly journals Sepat Siam fish community (Trichopodus pectoralis Regan, 1910) in Semayang Lake, East Kalimantan

2021 ◽  
Vol 890 (1) ◽  
pp. 012069
Author(s):  
Samuel ◽  
M Dwirastina ◽  
Y C Ditya
Keyword(s):  
Fish Community ◽  
Average Length ◽  
Morphological Characteristics ◽  
Fish Population ◽  
Fishing Effort ◽  
Growth Coefficient ◽  
East Kalimantan ◽  
Fish Samples ◽  
Small Mouth ◽  
Research Analysis

Abstract Siam sepat (Trichopodus pectoralis) is a fish that lives with the characteristics of its life in mainland public waters such as rivers, lakes and flooded swamps. The Siam sepat is classified as a consumption fish, has morphological characteristics with a small mouth with a pointed snout and a flat body shape. The research was conducted from March to October 2018 in Semayang Lake, East Kalimantan. Fish samples obtained from fishermen’s catch using fishing gear, including nets, nets, tangkul, scoops and traps. This study used an enumerator to record the length and weight of the fish. The results of the research analysis showed that the size of the individuals who dominate the Siam sepat fish population is at the size of 14.0-17.0 cm (60.8%), the allometric growth pattern (-) with the equation W = 0.0393 * L2.6409. The size of the first caught (Lc) of the Siam Sepat fish was 17.31 cm, the maximum average length (L∞) was 22.75 cm and the growth coefficient (K) was 0.78 per year. Natural mortality (M) and fishing mortality (F) were 1.64 and 2.64 per year, respectively. Thus the rate of exploitation (E) = 0.62 has exceeded the optimum value indicating that the fishing effort of Siamese septic fish in Lake Semayang has occurred overfishing.

scholarly journals Pola pertumbuhan dan faktor kondisi madidihang, Thunnus albacares (Bonnaterre, 1788) di Samudra Hindia Bagian Timur

2018 ◽  
Vol 18 (1) ◽  
pp. 13
Author(s):  
Suciadi Catur Nugroho ◽  
Irwan Jatmiko ◽  
Arief Wujdi
Keyword(s):  
Indian Ocean ◽  
Growth Pattern ◽  
Condition Factor ◽  
Yellowfin Tuna ◽  
Growth Patterns ◽  
Thunnus Albacares ◽  
Relative Condition Factor ◽  
Length Increase ◽  
Fish Samples ◽  
One Year

Yellowfin tuna, Thunnus albacares (Bonnaterre, 1788) is one of the important economically for tuna species that spread in Indonesian waters, including in WPP 572 (Indian Ocean west coast of Sumatra). One important aspect relating to sustainable utilization is the growth pattern and the condition factor. This study aims to examine growth patterns and factor conditions of yellowfin tuna in the Eastern Indian Ocean. The number of fish samples measured in length and weight is 7,550 with length range from 76-176 cm (average: 129.03 cm) and mode at 150 cm. The length weight relationship of the species is W=4x10-5L2.842 (R2 0,957). In general the growth pattern of yellowfin tuna is negative allometric which means that the length increase is faster than the weight. The average relative condition factor of yellowfin tuna is 0.975 with a tendency to decrease along with the increasing of its length. The highest relative condition factor occurred at the length class of 80 cm with 1,061 and the lowest occurred at length 170 cm with 0.918. The monthly relative condition factor generally increased twice in one year from February to June and from July to December. AbstrakTuna madidihang, Thunnus albacares (Bonnaterre,1788), merupakan salah satu spesies tuna ekonomis penting dan ter-sebar di perairan Indonesia, termasuk di WPP 572 (Samudra Hindia bagian barat Sumatera). Salah satu aspek penting yang berkaitan dengan upaya pemanfaatan berkelanjutan adalah pola pertumbuhan dan faktor kondisi. Penelitian ini bertujuan untuk mengkaji pola pertumbuhan dan faktor kondisi ikan madidihang di Samudra Hindia Bagian Timur. Jumlah ikan contoh yang diukur panjang dan bobotnya adalah 7.550 ekor yang mempunyai sebaran panjang 76-176 cm (rata-rata 129,03 cm) dan modus 150 cm. Hubungan panjang bobot ikan tersebut adalah W = 4x10-5L2,842 (R2 0,957). Secara umum pola pertumbuhan madidihang bersifat allometrik negatif yang berarti bahwa pertambahan panjang lebih cepat daripada bobotnya. Faktor kondisi relatif rata-rata madidihang adalah 0,975 dengan kecenderungan menurun seiring bertambahnya ukuran panjang. Faktor kondisi relatif tertinggi terjadi pada kelas panjang 80 cm sebesar 1,061 dan terendah terjadi pada kelas panjang 170 cm sebesar 0,918. Faktor kondisi relatif bulanan secara umum mengalami dua kali peningkatan dalam satu tahun yaitu dari bulan Februari hingga Juni dan dari Bulan Juli hingga Desember.

scholarly journals Production performance of cows raised with different post-weaning growth patterns

2021 ◽  
Author(s):  
Harvey C Freetly ◽  
Robert A Cushman ◽  
Gary L Bennett
Keyword(s):  
Growth Pattern ◽  
Bos Taurus ◽  
Life Time ◽  
Growth Patterns ◽  
Production Performance ◽  
Genetic Population ◽  
Breed Type ◽  
Genetic Types ◽  
Period 2 ◽  
Step Growth

Abstract The period of heifer development is a relatively small fraction of a cow’s life; however, her pattern of growth may have permanent effects on her productivity as a cow. We hypothesized that altering the growth pattern during the peri-pubertal period would increase life-time productivity across genetic types of Bos taurus cows. The objective was to determine the stayability, calf production, and weight of calf weaned across six calf crops. Heifers (n = 685) were placed on one of two developmental programs at 256 ± 1 d of age. Control heifers received a diet that provided 228 kcal ME·(BW, kg) -0.75 daily, and Stair-Step heifers were allocated 157 kcal ME·(BW, kg) -0.75 daily for 84 or 85 d, and then the daily allocation was increased to 277 kcal ME·(BW, kg) -0.75. Stair-Step heifers (0.33 ± 0.02 kg/d) had a lower ADG than Control heifers (0.78 ± 0.02 kg/d; P &lt; 0.001) during Period 1, and Stair-Step heifers (0.93 ± 0.03 kg/d) had a greater ADG than Controls (0.70 ± 0.03 kg/d; P &lt; 0.001) during Period 2. There were no treatment (P = 0.28) or breed type differences (P = 0.42) for the proportion of cows weaning a calf; however, the proportion of cows weaning a calf decreased with cow age (P &lt; 0.001). Calves from Stair-Step dams had heavier weaning weights (193 ± 1 kg) compared to Control calves (191 ± 1 kg; P = 0.007). There was not a treatment (P = 0.25) or breed type differences in cumulative BW weaned (P = 0.59). A diverse genetic population of cattle within Bos taurus was tested and responses in calf production did not differ between Stair-Step growth pattern and a more constant non-obese growth pattern.

Merging research, conservation and community engagement

2014 ◽  
Vol 4 (2) ◽  
pp. 184-195 ◽  
Author(s):  
Gloria Borona ◽  
Emmanuel Ndiema
Keyword(s):  
Community Engagement ◽  
Community Involvement ◽  
Local Community ◽  
Rock Art ◽  
Conservation Strategy ◽  
Content Type ◽  
Heritage Sites ◽  
Research Programmes ◽  
Research Findings ◽  
Community Projects

Purpose – Archaeological, palaeontological and geological research has been conducted in Kenya for many years. These research efforts have resulted in exceptional depth of understanding of the region's cultural heritage including those with rock art. Unfortunately, very few of the research programmes have engaged communities as active participants in conservation and consumers of the research findings. The purpose of this paper is to report how collaboration between the National Museums of Kenya and the Trust of African Rock Art (TARA) is creating a link between research, conserving heritage and community engagement. Design/methodology/approach – An overview of two rock art tourism community projects undertaken by TARA will reveal that engaging communities and disseminating research findings does not only foster preservation of sites but is critical in transforming rock art sites into economic endeavours whose outcomes are providing alternative livelihoods. Findings – Community engagement remains the only viable way of ensuring long-term conservation of heritage sites going forward. Originality/value – TARA is the only organization conducting this kind of work in the African continent. This case study therefore, provides authentic information on local community involvement as a conservation strategy in the African context.

scholarly journals Influence of Vertical Facial Growth Pattern on Herbst Appliance Effects in Prepubertal Patients: A Retrospective Controlled Study

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Maria Rita Giuca ◽  
Marco Pasini ◽  
Sara Drago ◽  
Leonardo Del Corso ◽  
Arianna Vanni ◽  
...  
Keyword(s):  
Growth Pattern ◽  
Class Ii ◽  
Growth Patterns ◽  
Response To Treatment ◽  
Controlled Study ◽  
Class Ii Malocclusion ◽  
Facial Growth ◽  
Herbst Appliance ◽  
Lateral Cephalograms ◽  
Vertical Growth Pattern

Introduction. The Herbst device is widely used for correction of class II malocclusions; however, most of the researches carried out on the Herbst appliance in literature do not take into account patients with a different mandibular divergence. The aim of this study was to investigate the effects of Herbst on dental and skeletal structures and to evaluate possible influence of vertical facial growth patterns. Methods. A retrospective study was conducted on lateral cephalograms of 75 growing patients (mean age: 9.9 ± 1.9 years) with class II malocclusion treated with Herbst. Subjects were divided into 3 groups using the mandibular divergence index (SN and GoMe angle). Cephalometric parameters were evaluated using the modified SO (sagittal occlusion) Pancherz’s analysis. A statistical analysis was conducted to evaluate differences among groups using ANOVA. Results. Our study showed differences in response to treatment depending on patient’s facial vertical growth pattern. Cranial base angle and mandibular rotation were significantly different (p<0.05) between hypodivergent patients and normodivergent patients and between hypodivergent and hyperdivergent subjects. Conclusion. Hypodivergent patients increased their mandibular divergence during treatment to a greater extent than normodivergents; moreover, hyperdivergent patients exhibited a decreased mandibular divergence at the end of the treatment.

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