Modeling the Emergence and Growth of Alligatorweed at Different Field Capacity Levels

Planta Daninha ◽

10.1590/s0100-83582020380100038 ◽

2020 ◽

Vol 38 ◽

Author(s):

T. AHMAD ◽

A. TANVEER ◽

M.A. NADEEM ◽

M. YASEEN

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Growth Parameters ◽

Field Capacity ◽

Moisture Regime ◽

Emergence Time ◽

Submerged Soils ◽

Sprouting Capacity ◽

Dry Conditions ◽

Survival And Growth

ABSTRACT: A study focusing on different field capacity levels was planned in the Weed Science Lab, Department of Agronomy, University of Agriculture Faisalabad. Fresh alligatorweed was harvested from the Agronomy fields and cuttings (2 cm length) were made from it. These cuttings were placed at 25%, 50%, 75% and 100% field capacity levels in pots for 25 days. The results of the experiments revealed that at all field capacity levels, fragments of alligatorweed were able to sprout and grow. Increased moisture levels significantly increased the emergence ability and survival of the alligatorweed plants upto a certain level. Compared with the control (25% FC), emergence time of the sprouts in the maximum moisture regime (100% of FC) decreased by 40% (12.94 days vs.7.17 days). By contrast, the survival rate of the fragments decreased by 60% (5 vs. 1.75) although survival and growth rate increased at first with 50% FC and 75% FC. Maximum sprouting and growth were found at 50% field capacity. Field capacity does affect the sprouting capacity of alligatorweed fragments but it has only a little influence on growth parameters. The results suggest that alligatorweed can sustain dry conditions to a great extent and also has the ability to sprout and grow in fully submerged soils.

Mangrove Rehabilitation at Alo Beach (Karakelang Islands, Talaud) Using Propagul of Rhizophora mucronata Lamk

Jurnal Wasian ◽

10.20886/jwas.v4i2.3048 ◽

2017 ◽

Vol 4 (2) ◽

pp. 69

Author(s):

Ady Suryawan

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Rhizophora Mucronata ◽

Randomized Design ◽

Waves And Tides ◽

Survival And Growth ◽

Mangrove Rehabilitation ◽

Main Factor

This study aimed to know the dynamic of survival rate and growth of Rhizophora mucronata Lamk which planted by using propagules at Alo Beach, Karakelang Island, Talaud. The study was conducted from June 2013 to April 2017, used a complete randomized design with 6 treatments i.e. K1, K2, K3, K4, K5, K6. The amount of propagules in every treatment were 100 pieces each. The parameter observed were characteristic of substrat, survival rate,height and diameter of the plant’s in age of 1.5 months and 48 months. The results showed that treatment had a significant effect on survival rate and growth of Rhizophora mucronata plants. The rehabilitation was categorized as success at 1.5 months old, but it was failed inthe 48 months. Beside waves and tides, low substrat nutrition became the main factor that affect the success of mangrove rehabilitation in Alo Beach.The K5 treatment has the highest survival and growth rate of the plant. The K5 treatment using pnematophore as brace, while planting without brace/K1 has lowest survival and growth rate since months old.Keywords: mangroves, rehabilitation, Rhizophora mucronata, Talaud

Effect of temperature on the survival and growth of freshwater prawns Macrobrachium borellii and Palaemonetes argentinus (Crustacea, Palaemonidae)

Iheringia Série Zoologia ◽

10.1590/s0073-47212011000200011 ◽

2011 ◽

Vol 101 (3) ◽

pp. 233-238 ◽

Cited By ~ 7

Author(s):

Marcela C. Montagna

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Anthropogenic Impact ◽

Effect Of Temperature ◽

Freshwater Environment ◽

Intermolt Period ◽

Different Temperatures ◽

Cephalothorax Length ◽

Survival And Growth ◽

Size Increment

During the two-month rearing period, the effect of four water temperatures (15°C, 20°C, 25°C and 30°C) on survival rate, number of molts, and growth rate (molt increment and intermolt period) of juvenile Macrobrachium borellii Nobili, 1896 and Palaemonetes argentinus Nobili, 1901 prawns was evaluated in laboratory conditions. The two species showed some similarities in their both survival and growth pattern at different temperatures. The survival rate was highest at 20°C and 25°C, decreasing at the lowest temperature. The number of molts increased at higher temperatures, ranging the intermolt period from 22.2 days to 9.9 days, for M. borellii, and from 20.8 to 9.5 days for P. argentinus, corresponding those values to 15°C and 30°C, respectively. No difference between species was noted in the intermolt period. The size increment by molting increased significantly from 15°C to 25°C, whereas a reduction in the growth of prawns was observed at 30°C. Significant differences among temperatures were found in the slope of regressions between the size increment by molting and the cephalothorax length. M. borellii showed a significantly higher tolerance to elevated temperature and a faster growth (about twice at 25°C) than P. argentinus. These differences could provide M. borellii a competitive advantage for a better adaptation to the dynamic of freshwater environment, especially in areas with anthropogenic impact.

Effect of Alkalinity on Survival Rate and Growth of Siam Patin Catfish (Pangasius sp.) fry

Jurnal Akuakultur Indonesia ◽

10.19027/jai.4.53-56 ◽

2007 ◽

Vol 4 (1) ◽

pp. 53

Author(s):

D. Djokosetiyanto ◽

R.K. Dongoran ◽

E. Supriyono

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Fish Larvae ◽

Daily Growth Rate ◽

Daily Growth ◽

Survival And Growth

This study was conducted to examine the effect of alkalinity on survival and growth of Siam patin catfish (Pangasius sp.). Fish larvae were reared in aquaria in density of 4 fishes per liter. Water alkalinity examined was 15 ppm CaCO3 as control, and 25, 50, and 75 ppm CaCO3 as treatments. During first 7 days, larvae were fed on nauplii Artemia sp. 4 times daily and continuing fed on Tubifex sp. for 23 days. The results of study showed that higher survival rate was obtained in treatment 50 ppm CaCO3 (94.16%). Higher daily growth rate was also achieved by that treatment. Keywords: Siam patin catfish, Pangasius, Alkalinity, CaCO3 ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh alkalinitas terhadap kelangsungan hidup dan pertumbuhan larva ikan patin Siam (Pangasius sp.). Larva ikan patin dipelihara dalam akuarium dengan kepadatan 4 ekor/L. Alkalinitas air yang digunakan adalah 15 ppm CaCO3 sebagai kontrol, dan perlakuan 25, 50 serta 75 ppm CaCO3. Selama 7 hari pertama, pakan yang diberikan berupa naupli Artemia sp. setiap 4 jam sekali dan diteruskan dengan cacing sutera (Tubifex sp.) selama 23 hari. Hasil penelitian menunjukkan bahwa kelangsungan hidup larva tertinggi diperoleh pada perlakuan alkalinitas 50 ppm CaCO3 (94,16%). Laju pertumbuhan harian tertinggi juga diperoleh pada perlakuan alkalinitas 50 ppm CaCO3 (6,65%). Kata kunci: ikan patin Siam, Pangasius, Alkalinitas dan CaCO3

PEMELIHARAAN LARVA ABALON Haliotis squamata DENGAN PEMBERIAN JENIS PAKAN BERBEDA DALAM BENTUK TEPUNG

Jurnal Riset Akuakultur ◽

10.15578/jra.13.1.2018.39-46 ◽

2018 ◽

Vol 13 (1) ◽

pp. 39

Author(s):

Fitriyah Husnul Khotimah ◽

Gusti Ngurah Permana ◽

Ibnu Rusdi ◽

Bambang Susanto

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Seed Production ◽

Shell Length ◽

Sea Water ◽

Feed Solution ◽

Larval Rearing ◽

Daily Growth Rate ◽

Daily Growth ◽

Survival And Growth

Masalah utama yang umum terjadi pada produksi benih abalon adalah kematian yang tinggi (> 90%) setelah abalon menempel pada plate pemeliharaan. Penggunaan pakan dalam bentuk tepung untuk mengganti diatom sebagai pakan postlarva beberapa spesies ikan, udang, dan abalon sudah dilakukan. Penelitian ini bertujuan untuk mendapatkan jenis pakan dalam bentuk tepung yang sesuai dan efektif untuk mendukung sintasan dan pertumbuhan larva abalon Haliotis squamata. Percobaan terdiri atas lima perlakuan pakan pada pemeliharaan larva abalon yaitu tepung Spirulina sp., Ulva sp., Chaetoceros sp., Gracilaria sp., dan diatom (kontrol). Masing-masing perlakuan terdiri atas empat ulangan. Pakan berupa tepung yang digunakan pada masing-masing perlakuan, terlebih dahulu dicampur merata dengan larutan tepung agar (7,5 mg/mL dalam air laut; suhu 40°C) dengan konsentrasi tepung 40 mg/mL larutan agar. Pemberian pakan dilakukan setiap tiga hari dengan cara menyemprotkan larutan pakan pada permukaan plate pemeliharaan larva. Penelitian dilakukan selama 30 hari. Hasil penelitian menunjukkan bahwa sintasan larva abalon yang diberi pakan tepung Spirulina sp. paling tinggi dan berbeda nyata (P<0,05) dengan yang diberi diatom, tepung Chaetoceros sp., dan Ulva sp., yaitu masing-masing 81,49%; 79,25%; 76,57%; dan 76,46%; tetapi tidak berbeda nyata dengan yang diberi pakan tepung Gracilaria sp. 81,37% (P>0,05). Laju pertumbuhan harian panjang cangkang larva abalon tertinggi diperoleh pada larva yang diberi pakan tepung Gracilaria sp. (203,81 ± 1,23 µm/hari) dan Spirulina sp. (205,59 ± 1,71 µm/hari). Nilai laju pertumbuhan harian panjang cangkang larva abalon yang paling rendah dijumpai pada larva yang diberi pakan tepung Ulva sp. (146,07 ± 1,73 µm/hari).The most common problem in abalone seed production is the high mortality occurrence (> 90%) after postlarvae settlement to the rearing plates. The use of microparticle diets to replace the natural feed of postlarval has been performed on various species of fish, shrimp, and abalone. This research aims to determine the most effective and suitable powder-based feed to support the survival and growth of abalone Haliotis squamata larvae. The experiments consisted of five feed treatments, i.e., Spirulina sp., Ulva sp., Chaetoceros sp., and Gracilaria sp. Flour, and diatoms (as control). Each treatment had four replicates. The powder-based feed used in each treatment was firstly mixed with a solution of agar powder (7.5 mg/mL sea water, 40°C) with a concentration of 40 mg of flour/mL of agar solution. Feeding was done every three days by spraying the feed solution onto the surface of the larval rearing plate. The study was conducted for 30 days. The results showed that survival rate of abalone larvae fed with Spirulina sp. flour was the highest and significantly different (P<0.05) compared with those given diatoms, Chaetoceros sp. and Ulva sp. flours, which were 81.49%, 79.25%, 76.57%, and 76.46%, respectively, and not significantly different from those fed with Gracilaria sp. 81.37% (P>0.05). The highest daily growth rate of the shell length of abalone larvae was achieved by larvae fed with Gracilaria sp. (203.81 ± 1.23 ¼m/day) and Spirulina sp. flours (205.47 ± 1.71 µm/day). The lowest daily growth rate of shell length was found on abalone larvae fed with Ulva sp. flour (146.07 ± 1.73 µm/day).

Effect of Adding BIOM-S Probiotic on Survival and Growth Rate of Nile Tilapia (Oreochromis niloticus)

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2018/v2i226120 ◽

2018 ◽

pp. 1-6

Author(s):

Yuli Andriani ◽

Taufik Ikhsan Kamil ◽

Irfan Zidni ◽

Iskandar . ◽

Titin Herawati

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Specific Growth Rate ◽

Nile Tilapia ◽

Specific Growth ◽

Culture Media ◽

Control Treatment ◽

Randomized Design ◽

Nile Tilapia Oreochromis Niloticus ◽

Survival And Growth

This research was conducted in May-June 2017 in Hatchery Indoor Maksudi, Astanaanyar, Bandung. This research aims to find out the optimal BIOM-S probiotic on culture media of Nile tilapia, and the influence to survival rate and growth rate of Nile tilapia. This research was conducted by an experiment using Completely Randomized Design (CRD). This research consisted of five treatments and three replications, which were treatment A (control), treatment B (giving probiotic with 0,6 ml/L concentration), treatment C (giving probiotic with 0,8 ml/L concentration), treatment D (giving probiotic with ,0 ml/L concentration), and treatment E (giving probiotic with 1,2 ml/L concentration). The parameters in this research were the survival rate and specific growth rate. Survival rate and specific growth rate used data analysis with F test to find out the influence of each treatment. The concentration of optimal probiotic based on the results was 0.8 ml/L, it produced the highest survival rate for 81.67% and the specific growth rate for 0.039%.

Effect of Humisol on survival and growth of nursery grafted walnut (Juglans regia L.) plants

Horticultural Science ◽

10.17221/78/2013-hortsci ◽

2013 ◽

Vol 40 (No. 3) ◽

pp. 111-118

Author(s):

S.M. Paunović ◽

R. Miletić ◽

D. Janković ◽

S. Janković ◽

M. Mitrović

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Humic Acid ◽

Foliar Application ◽

Juglans Regia ◽

Mineral Nutrients ◽

First Year ◽

Organic Fertiliser ◽

Survival And Growth ◽

Second Year

The effect of Humisol organic fertiliser (150 g humic acid/l + 20 g/l mineral nutrients) on plant survival and growth of five walnut cultivars grown over a period of two years in the nursery were evaluated. Walnut plants treated with Humisol at the total annual rate of 0.75 ml/plant had a significantly higher survival rate in the first year, greater height and diameter in both years, and a higher percentage of first-class plants at the end of the second year, as compared to untreated control plants. Soil application of Humisol led to better performance of nursery grafted plants, compared to foliar application. Nursery plants receiving 1.5 ml Humisol per year through both soil and foliar application exhibited the best performance in the parameters analysed. In the first year, a decrease in plant growth rate in all treatments was observed in August and September; in the second year, growth rate started to significantly decline in the second half of August.    

Pengaruh Penambahan Sargassum sp. dan Inositol dalam Pakan terhadap Pertumbuhan dan Daya Tahan Juvenil Ikan Gurami (Osphronemus gouramy Lac.)

Jurnal Natur Indonesia ◽

10.31258/jnat.16.2.72-78 ◽

2017 ◽

Vol 16 (2) ◽

pp. 72

Author(s):

Dwi Lestari ◽

E. L. Widiastuti ◽

N. Nurcahyani ◽

G. N. Susanto

Keyword(s):

Growth Rate ◽

Body Weight ◽

Survival Rate ◽

Body Length ◽

Growth Parameters ◽

Freshwater Fishes ◽

The Body ◽

Body Width ◽

Treatment Groups ◽

Commercial Feed

Gourami (Osphronemus gouramy Lac.) as one of the freshwater fishes, are easily to be cultured but slow in growth rate. One of the ways to enhance their growth rate is by feeding them with high nutritious food. Sargassum sp. and inositol are known compound able to stimulate the growth of some fishes. The study was conducted to determine the effect of Sargassum sp and inositol on commercial feed to the growth rate and survival of juvenile gouramy. The study was conducted from January to April 2015 in Aquatic Laboratory of Biology Department - University of Lampung. Completely randomized designed was used with 4 treatment groups and 5 replications. Anova and Tukey at 5% levels were applied to this study. The result indicated that addition of inositol and Sargassum sp on commercial food significantly affected the gourami growth parameters such as the body weight, body length, body width as well as juvenile gouramy spesific growth rate and their survival rate.

Effects of different doses of skt-b vibrio probiotic bacteria addition on survival and growth rate of tiger shrimp (Penaeus monodon) larva

Jurnal Akuakultur Indonesia ◽

10.19027/jai.9.21-29 ◽

2010 ◽

Vol 9 (1) ◽

pp. 21 ◽

Cited By ~ 3

Author(s):

. Widanarni ◽

M.A. Lidaenni ◽

Dinamella Wahjuningrum

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Pathogenic Bacteria ◽

Vibrio Harveyi ◽

Penaeus Monodon ◽

Probiotic Bacteria ◽

Optimum Dose ◽

Tiger Shrimp ◽

Survival And Growth ◽

Different Doses

Probiotic bacteria has been widely used as biocontrol agents in tiger shrimp hatcheries. Vibrio SKT-b is one of the probiotic bacteria candidates that could suppressed the growth of pathogenic bacteria Vibrio harveyi and could increase survival rate of tiger shrimp larva. This experiment was carried out to study the effects of probiotic bacteria SKT-b Vibrio addition at different doses on survival and growth rate of tiger shrimp larva. Experiment was conducted with five treatments and three replications, consisted of SKT-b Vibrio probiotic bacteria addition at the doses of 103 CFU/ml, 104 CFU/ml, 105 CFU/ml, and 106 CFU/ml and control (0 CFU/ml). Results showed that optimum dose of probiotic bacteria for tiger shrimp was 104 CFU/ml with a survival rate of 94.67%. However, the addition of probiotic bacteria at this particular dose did not significantly increase shrimp growth rate as compared with control. Key words: Probiotic bacteria, SKT-b Vibrio, doses, tiger shrimp larva ABSTRAK Bakteri probiotik telah banyak digunakan sebagai agen biokontrol dalam pembenihan udang windu. Vibrio SKT-b merupakan salah satu jenis bakteri kandidat probiotik yang telah diuji dapat menekan pertumbuhan bakteri patogen Vibrio harveyi dan dapat meningkatkan kelangsungan hidup larva udang windu. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian bakteri probiotik Vibrio SKT-b dengan dosis yang berbeda terhadap kelangsungan hidup dan pertumbuhan larva udang windu. Penelitian ini dilakukan dalam 5 perlakuan dengan masing-masing 3 ulangan, yaitu penambahan bakteri probiotik Vibrio SKT-b dengan dosis 103 CFU/ml, 104 CFU/ml, 105 CFU/ml, dan 106 CFU/ml dan kontrol (0 CFU/ml). Hasil penelitian menunjukkan bahwa dosis optimal untuk larva udang windu adalah 104 CFU/ml dengan nilai kelangsungan hidup 94,67%. Namun, pemberian bakteri probiotik tersebut belum menghasilkan pertumbuhan yang berbeda nyata dengan kontrol. Kata kunci: Bakteri probiotik, Vibrio SKT-b, dosis, larva udang windu

PENGARUH FREKUENSI PEMBERIAN PAKAN PADA PENDEDERAN KE DUA IKAN LELE DUMBO YANG DIPELIHARA DI KOLAM TANAH

Jurnal Sains Natural ◽

10.31938/jsn.v1i1.5 ◽

2017 ◽

Vol 1 (1) ◽

pp. 1

Author(s):

Sri Sundari ◽

Estu Nugroho ◽

Jojo Subagja

Keyword(s):

Water Quality ◽

Growth Rate ◽

Survival Rate ◽

Design Of Experiment ◽

Critical Time ◽

Stocking Density ◽

Randomized Design ◽

Feed Management ◽

Survival And Growth ◽

Filter Selection

Effect of Feed Frequency on Second Rearing Larvae of Catfish Culture in Earthen Pond. Breeding is an important part in business scale of catfish. The critical time of catfish culture is in second rearing of larvae (from 2-3 cm to 8-10 cm) due to their canibalism. The successibility of seed rearing is depend on continuesly feed reservation, including feed management. The objective of this research was to get information about feed frequency given to seed reared in earthen pond. Research was conducted using farmer’s earthen pond in Pabuaran, Kemang Bogor district. Cat fish seed originated from farmer located in Bogor, with size of 2-3 cm per each and stocking density of 100 fish/m2. Treatments were feed frequency i.e. 2x; 4x and 6x in a day or night. Observed parameter were survival and growth rate, including water quality. Block Randomized Design of Experiment were used with two replications. Samping was conducted every 7 days. Result showed that there was statistically significant differences (P<0.05) among treatment in survival rate, while no statistically differences in growth rate of seeds length and weight. Feed frequency 2x at night gived the best result of survival rate and percentage of ”filter selection” was up to 80% and 37.76% respectivelly.Keywords : Feed frequency, second rearing, catfish ABSTRAK Salah satu skala bisnis ikan lele yang penting adalah pembenihan. Pada pembenihan lele, masa kritis salah satunya ditemui pada tahapan pendederan kedua (dari ukuran 2-3 cm ke 8-10 cm). Keberhasilan pendederan ini sangat tergantung pada kesediaan pakan yang kontinu, sehingga dapat menekan kanibalisme yang ada. Tujuan penelitian ini yaitu untuk mendapatkan informasi frekuensi pakan yang diberikan dengan tepat pada pendederan ikan lele yang dipelihara di kolam tanah. Penelitian ini dilaksanakan di kolam tanah di daerah pabuaran, Kemang, Bogor. Ikan uji yang digunakan adalah benih ikan lele ukuran ± 2-3 cm/ekor, dengan kepadatan 100 ekor/m2. Perlakuan yang diamati adalah frekuensi pemberian pakan, yaitu i) 2x, ii) 4x dan iii) 6x, baik dilakukan pada siang maupun malam hari. Secara garis besar parameter yang diamati dalam penelitian ini meliputi pertumbuhan, dan kelangsungan hidup serta sifat fisika dan kimia air. Rancangan percobaan yang digunakan adalah rancangan acak blok yaitu berupa waktu siang dan malam dengan 2 ulangan waktu. Sampling dilakukan 7 hari sekali. Hasil yang diperoleh menunjukkan adanya perbedaan yang nyata (P<0,05) dari perlakuan terhadap sintasan benih, namun tidak berbeda nyata pada laju pertumbuhan harian berat dan panjang benih. Pemberian pakan dengan frekuensi 2x pada malam hari memberikan pengaruh yang terbaik dengan sintasan mencapai 80%, dengan persentase lolos saring mencapai 37.76%.Kata kunci : frekuensi pakan, pendederan 2, ikan lele

The effect of relative humidity on the survival and growth rate of the yellow mealworm larvae (Tenebrio molitor, Linnaeus 1758)

Journal of Insects as Food and Feed ◽

10.3920/jiff2020.0068 ◽

2021 ◽

pp. 1-8

Author(s):

N.S. Johnsen ◽

J.L. Andersen ◽

J. Offenberg

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Relative Humidity ◽

Tenebrio Molitor ◽

Larval Survival ◽

Yellow Mealworm ◽

Farming Community ◽

Livestock Sector ◽

Survival And Growth ◽

Mealworm Larvae

The current livestock sector is a large contributor to the environmental challenges facing the world. To reduce the environmental impact of food production, a change of the sector is necessary. Entomophagy could be a step towards a more sustainable protein production. However, the insect farming community has a short history compared to conventional livestock, thus, it lacks knowledge of how a profitable mass production of insects is established. In this study we aimed to find the optimal relative humidity (RH) for production of larvae of a popular species for insect farming; the yellow mealworm, Tenebrio molitor. More specifically we tested the effect of a RH of 43, 51, 68, 75 and 84% on the survival rate, mass and length of T. molitor larvae, from hatching and two weeks forward. Control of RH was achieved using the saturated salt solution method, and the temperature was kept at 30 °C. Experiments were carried out over 12 weeks. The sample size was 100 larvae and eight replicates per treatment. Results showed that the RH had no effect on larval survival rate but had a significant effect on individual larvae mass and length after three weeks. Larval mass and length increased with humidity, and larvae reared at a RH of 84% were 1.96 times heavier and 1.31 times longer than larvae raised at 43%. Hence, for an industrial mass producer of T. molitor larvae, applying close to the optimal RH of 84% would likely result in an increased larvae size at harvest and a faster growth rate, ultimately leading to a higher yield.