scholarly journals Length-weight relationship and growth parameters of the commercial fish Pagellus erythrinus (Linnaeus, 1758) (Actinopterygii: Sparidae) from northern and southern Tunisia

2019 ◽  
Vol 54 (1) ◽  
pp. 3-11
Author(s):  
Chiheb Fassatoui ◽  
Leila Hmida ◽  
Amel Ben Rejeb Jenhani ◽  
Mohamed Salah Romdhane
Keyword(s):  
Regression Coefficient ◽  
Growth Parameters ◽  
Von Bertalanffy ◽  
Southern Population ◽  
Allometric Growth ◽  
Allometric Relationship ◽  
Northern Population ◽  
Commercial Fish ◽  
Weight Relationship ◽  
Pagellus Erythrinus

Abstract Based on length, weight, and age data, we examined allometry and growth parameters for common pandora, Pagellus erythrinus, commercially collected seasonally from northern and southern Tunisian coasts in 2007. A total of 370 specimens (14–27.5 cm in length) were used to assess the allometric variation at seasonal scales. The slope b values (regression coefficient) of the length-weight relationship varied between 2.494 to 3.237, indicating (roughly) an isometric to negative allometric growth pattern. The allometric relationship, as a proxy for fish condition, seems to be affected by seasons and sex in the northern population, while only seasons seem to have a strong effect in the southern population, as indicated by ANOVA. The von Bertalanffy growth parameters were identified at L∞ = 34.076 and 28.017 cm, k = 0.153 and 0.150/year, and t0 = −1.922 and −3.961 years for the northern and southern sample, respectively.

scholarly journals Length-weight relationship and growth parameters of moonfish Mene maculata (Bloch and Schneider, 1801) from Karnataka Coast, India

2018 ◽  
Vol 65 (1) ◽  
Author(s):  
Divya Viswambharan ◽  
Pratibha Rohit ◽  
K. K. Joshi ◽  
Sujitha Thomas ◽  
Latha Shenoy ◽  
...  
Keyword(s):  
Growth Parameters ◽  
B Value ◽  
Annual Growth ◽  
Allometric Growth ◽  
B Values ◽  
Weight Relationship ◽  
Significant Difference

The present study aimed to elucidate the length-weight relationship and growth parameters of the moonfish Mene maculata (Bloch and Schneider, 1801) along the Karnataka Coast. The species showed positive allometric growth with pooled ‘b’ value of 3.390 which is significantly greater than 3 (p<0.05) level. The “b” values of males (3.316) and females (3.440) showed significant difference from that of the indeterminates (2.90). The annual growth parameters estimated for moonfish off Karnataka Coast were: L∞ = 29.1 cm and K = 1.014 yr-1.

scholarly journals Growth parameters of Poecilia latipinna (Lesueur, 1821) (Actinopterygii, Poeciilidae) – an introduced species in brackish water of Wadi Al-Bahayes (Oman)

2021 ◽  
Vol 50 (3) ◽  
pp. 269-277
Author(s):  
Salim Serkan Güçlü ◽  
Saud M. Al Jufaili ◽  
Laith A. Jawad
Keyword(s):  
Growth Performance ◽  
Alien Species ◽  
Condition Factor ◽  
Growth Parameters ◽  
Growth Equation ◽  
Von Bertalanffy ◽  
Poecilia Latipinna ◽  
Weight Relationship ◽  
The Mean ◽  
Von Bertalanffy Growth Equation

Abstract This work is one of the first studies on the growth of Poecilia latipinna outside its natural habitat. The objective of our study was to investigate the growth parameters of the population of P. latipinna, which is an alien species in Oman (Wadi Al-Bahayes). The population structure of P. latipinna in Wadi Al-Bahayes (Oman; 23°40′47″N; 58°11′36″E) was studied in June and August 2020, using 124 fish. In the course of this study, the number of individuals of each sex, age, weight and size composition were determined. In addition, the total length–weight relationship (LRW) was calculated, as well as the von Bertalanffy growth equation. The mean growth performance (phi prime) and the condition factor were calculated. Males accounted for 37.10% and females for 62.90% of the population. The length–weight relationship and the von Bertalanffy growth equation were W = 0.0214 × L 2.7889 R2 = 0.9212, Lt = 11.46 (1 − e −0.127 (t + 2.71)) for males and Lt = 14.51 (1 − e−0.072 (t + 3.98)) for females. The mean growth performance and the condition factor were calculated as 1.22 for males and 1.18 for females and 1.54 for all specimens. The study shows that the population of the species is characterized by a wide age range. Consequently, monitoring of this alien species is highly recommended.

scholarly journals Pola Pertumbuhan Siput Gonggong Strombus turturella, Röding, 1798 (Gastropoda: Strombidae) di Pulau Bangka, Bangka Belitung

2019 ◽  
Vol 22 (2) ◽  
pp. 118
Author(s):  
Okto Supratman ◽  
Indah Auliana ◽  
Mualimah Hudatwi ◽  
Eva Utami
Keyword(s):  
Growth Model ◽  
Growth Pattern ◽  
Growth Parameters ◽  
Growth Patterns ◽  
Anthropogenic Activity ◽  
First Year ◽  
Von Bertalanffy ◽  
Allometric Growth ◽  
A Value ◽  
One Year

Strombus turturella on Bangka Island is under pressure and threatens the effects of anthropogenic activity. This condition is necessary to carry out various efforts to manage the dog conch on an ongoing basis. Based on these problems, it is necessary to conduct research related to various parameters of the growth of the dog conch on Bangka Island. The purpose of the study was to determine the growth parameters of the dog conch which included growth patterns, estimation of growth model von bertalanffy and length-weight relationship. The research was carried out in several stages, namely: 1) Sampling in the field conducted in Teluk Kelabat waters, Ketawai Island and Anak Air Island, 2) Measurement of shell length and weight, and 3) Analysis of growth parameters using the FiSAT II application, then estimated von Bertalanffy's growth. The results of the frequency distribution of the size of the gonggong snail class in Teluk Kelabat were 47.85- 66.35 mm, on Ketawai Island 44.10-77.45 mm, while those on Anak Air Island were 44.10-62.65 mm. The results of Von Bertalanffy's growth model in the first year or age of one year growth accelerated with the length of the shell in Teluk Kelabat (44.46 mm), Ketawai Island (46.63 mm) and Pulau Anak Air (32, 80 mm). Then in the following year the growth slowed down to asymptotic length with around 11 years of age in T. Kelabat, 14 years in P. Ketawai and 15 years in P. Anak Air. The relationship between the length and weight of the dog conch in three locations on Bangka Island with a value of b <3 so that a negative allometric growth pattern can be determined. The negative allometric growth pattern shows an increase in the length of the snail bark faster than the weight gain. Siput gonggong (Strombus turturella) di Pulau Bangka mengalami tekanan dan ancaman dampak dari aktivitas antropogenik. Kondisi ini maka perlu dilakukan berbagai upaya pengelolaan siput gonggong secara berkelanjutan. Berdasarkan permasalahan tersebut maka perlu dilakukan penelitian berkaitan berbagai parameter pertumbuhan siput siput gonggong di Pulau Bangka.  Tujuan penelitian yaitu menentukan beberapa parameter pertumbuhan siput gonggong yang meliputi distribusi kelas ukuran, pendugaan model pertumbuhan von bertalanffy dan hubungan panjang berat. Penelitian dilakukan beberapa tahapan yaitu 1) Pengambilan sampel di lapangan yang dilakukan di Perairan Teluk Kelabat, Pulau Ketawai dan Pulau Anak Air, 2) Pengukuran panjang cangkang dan berat, dan 3) Analisis parameter pertumbuhan dengan menggunakan aplikasi FiSAT II, selanjutnya dihitung pendugaan pertumbuhan von Bertalanffy. Hasil distribusi frekuensi kelas ukuran siput gonggong di Teluk Kelabat yaitu 47.85 mm s.d 66.35 mm, di Pulau Ketawai 44.10 mm s.d 77.45 mm, sedangkan di Pulau Anak Air yaitu 44.10 mm s.d 62.65 mm. Hasil model pertumbuhan Von Bertalanffy pada tahun pertama atau umur satu tahun pertumbuhan mengalami percepatan dengan panjang cangkang di Teluk Kelabat (44,46 mm), Pulau Ketawai (46,63) dan Pulau Anak Air (32, 80) mm. Kemudian pada tahun selanjutnya pertumbuhan semakin melambat sampai mecapai panjang asimtotik dengan umur sekitar 11 tahun di T. Kelabat, 14 tahun di P. Ketawai dan 15 tahun di P. Anak Air. Hubungan panjang dan berat siput gonggong di tiga lokasi di Pulau Bangka dengan nilai b < 3 sehingga dapat ditentukan pola pertumbuhan alometrik negatif. Pola pertumbuhan alometrik negatif  menunjukan pertambahan panjang siput gonggong lebih cepat dibandingkan dengan pertambahan berat.

Length-weight relationship of a newly described catfish Pangasius silasi Dwivedi et al., 2017 from Nagarjuna Sagar Dam, Telengana, India

2020 ◽  
Vol 67 (2) ◽  
Author(s):  
T. T. Ajith Kumar ◽  
Santosh Kumar ◽  
Kuldeep K. Lal
Keyword(s):  
Sustainable Management ◽  
Natural Waters ◽  
Condition Factor ◽  
Regression Coefficient ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Average Condition ◽  
Males And Females ◽  
Relationship Of ◽  
Management And Conservation

The length-weight relationship of a newly described catfish Pangasius silasi Dwivedi et. al., 2017 was studied from 88 specimens collected from the native distribution range of the species i.e. Nagarjuna Sagar Dam, Telengana, India. The total length and weight of the sampled fishes ranged from 290 to -590 mm and 240 to 2300 g respectively. Results of regression analysis showed that the regression coefficient (r²) values varied from 0.985 to 0.989. The average condition factor observed was 1.04 and 0.98 for males and females respectively. Positive allometric growth and condition factor of the species indicated the potential of the species for aquaculture. The information generated will also be useful in sustainable management and conservation of the species in natural waters.

scholarly journals Age, growth, mortality, and exploitation rate of blueline snapper, Lutjanus coeruleolineatus (Actinopterygii: Perciformes: Lutjanidae), from Dhofar Governorate, Sultanate of Oman

2021 ◽  
Vol 51 (2) ◽  
pp. 159-166
Author(s):  
Dawood Almamari ◽  
Said Rabia ◽  
Joo Myun Park ◽  
Laith A. Jawad
Keyword(s):  
Fishery Management ◽  
Growth Parameters ◽  
Total Mortality ◽  
Natural Mortality ◽  
Von Bertalanffy ◽  
Fishing Mortality ◽  
Sultanate Of Oman ◽  
Commercial Fish ◽  
Exploitation Rate ◽  
Reported Study

The blueline snapper, Lutjanus coeruleolineatus (Rüppell, 1838), is a significant commercial fish species harvested from the traditional fishery in the Sultanate of Oman. Deficient data on this species, however, make the management strategies challenging, especially in fisheries ecology. A total of 978 specimens were obtained from Dhofar Governorate off the coast of the Arabian Sea during the period between February 2015 and March 2016. In total, 296 sectioned otoliths were analyzed and growth was estimated from non-seasonal growth by using von Bertalanffy method. The parameters of von Bertalanffy growth function, total mortality (Z), natural mortality (M), fishing mortality (F), and exploitation rate (E) were determined and compared with those for Lutjanidae fishes elsewhere. The age structure of male fishes was between 1 and 14 years for males while the age of females ranged from 1 to 18 years. Growth rate (K) was 0.21 y–1 and 0.16 y–1 for males and females, respectively. The hypothetical length of female (L∞ = 46 cm) was relatively higher than that of male (L∞ = 42 cm). The natural mortality (M) was 0.296, total mortality (Z) was 0.372, fishing mortality was 0.076, and exploitation rate (E) was estimated as 0.2. The presently reported study is conducted to examine this fish in relation to growth parameters by analyzing otolith structure. The results of the presently reported study will contribute towards planning the regional fishery management policies in Oman.

scholarly journals Length-weight Relationship, Condition Factor and Feeding Habits of Synodontis clarias (Linnaeus, 1758) in the Lower River Benue at Makurdi, Nigeria

2015 ◽  
Vol 6 ◽  
pp. 59-67
Author(s):  
P M Akombo ◽  
E T Akange ◽  
B O Amali ◽  
J N Shima
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Size Range ◽  
Regression Coefficient ◽  
Feeding Habits ◽  
Allometric Growth ◽  
Food Items ◽  
Weight Relationship ◽  
Wide Range ◽  
The Mean

The Length-Weight Relationship (LWR), Condition factor (K) and feeding habits of Synodontis clarias (Linnaeus, 1758) were investigated over a 24 month period from January, 2009 - December, 2010. A total number of 163 specimens comprising of 74 females and 89 males with the size range of 7.60 – 20.00cm and the mean of 12.72± 0.258cm were investigated. The weight ranged from 13.12 – 607.30g with the mean of 65.83± 0.897g. The LWRs for the females, males and combined sexes had the r values of 0. 8415, 0.9463 and 0.8703 respectively. The mean condition factor K was 3.3667, 2.6868 and 2.9954 for the females, males and combined sexes respectively. The regression coefficient b was 1.9408, 1.8799 and 2.1359 for the females, males and combined sexes respectively indicating negative allometric growth pattern for the species. Out of the 163 stomachs examined for food items, 88 (53.99%) were empty while 75 (46.01%) contained a wide range and varying quantities of food items indicating that S.clarias in River Benue is omnivorous.

scholarly journals GROWTH COMPARISON OF MAHSEER (Tor tambroides) FROM MANNA AND TARUSAN RIVER IN WESTERN SUMATERA RIVER

2016 ◽  
Vol 22 (1) ◽  
pp. 1
Author(s):  
Arif Wibowo ◽  
Mirna Dwirastina
Keyword(s):  
Growth Curve ◽  
Growth Parameters ◽  
Age Groups ◽  
Population Estimation ◽  
Von Bertalanffy ◽  
Growth Study ◽  
River Population ◽  
Weight Relationship ◽  
West Sumatra ◽  
Group Population

Mahseer is commonly used as a premium consumption fish with exceptional price, however, these species have encountered dwindle in distribution and abudance. The objective of this study was to investigate and to compare aspects of the interspatial variability of Western Sumatra component growth of mahseer between Manna River and Tarusan River. Mahseer samples were collected from the Manna River, Bengkulu Province and Tarusan River, West Sumatra Province. Monthly sampling was carried out over a period of February to October 2012 in Manna River and February to July 2012 in Tarusan River for detailed growth study. A total of 295 mahseer samples were collected from five sampling sites in Manna River and 495 mahseer samples were collected from three sampling sites in Tarusan River. The results show the ge group population estimation of T. Tambroides from Manna River and Tarusan River based on the analysis of length-frequencies using the Bhattacharya method, resulted in two different age groups. The theoretical growth curve for length from Manna River, the values are L¥ = 50,45 cm, K = 1,90 yr-1, t0 = -0,07 yr-1 and F  = 3,684, and for weight, the values are W¥ = 1395,49 gr, K = 0,71 yr-1, t0 = -0,078 yr-1 and F  = 6,148. The parameters of the von Bertalanffy growth curve in length from Tarusan River were L¥ = 31,34 cm, K = 1,70 yr-1, t0 = -0,09 yr-1 and F  = 3,21 and W¥ = 634,86 gr, K = 0,48 yr-1, t0 = -0,147 yr-1 and F  = 5,282 in weight.  The length-weight relationship estimated for Manna River was W = 0,000007TL3,086 for females (R2 = 0,9545, N = 91) and W = 0,0037TL1,882 for males. While for Tarusan River, length-weight relationship estimated was = 0,00003TL2,839. Mahseer from Manna River population has better growth parameters than those at Tarusan  River.

scholarly journals The Variation of Several Biological Characteristics of the Chub, Squalius cephalus (L., 1758), in the Orenler Dam Lake, Northwest Anatolia, Turkey

2012 ◽  
Vol 4 (3) ◽  
pp. 27-32 ◽  
Author(s):  
Sait BULUT ◽  
Ramazan MERT ◽  
Muhsin KONUK ◽  
Beklan ALGAN ◽  
Ali ALAŞ ◽  
...  
Keyword(s):  
Condition Factor ◽  
Growth Parameters ◽  
Fork Length ◽  
Biological Characteristics ◽  
Von Bertalanffy ◽  
Calculated Length ◽  
Weight Relationship ◽  
Average Condition ◽  
Squalius Cephalus

In the present study, several growth parameters of 338 Squalius cephalus (L., 1758) specimens collected from the Orenler dam lake (Turkey) between July 2005 and June 2006 were studied. The population comprised 50.74% males, 46.29% females, and 2.97% males+females. In the examined samples, the age of females and males ranged from I to VII and I to VI, respectively. The fork length and weight of females were 14.7-38.0 cm and 40.68-27.0 g, respectively; these values were 16.3-33.7 cm and 57.7-560.0 g, respectively, for males. The age-length and age-weight relationships at time t were calculated by the von Bertalanffy equation for females, and the following results were obtained: Lt = 37.12[1–e–0.36(t–(–0.96))], Wt = 775.6[1–e–0.36(t–(–0.96))]3.27, Lt = 43.59[1–e–0.3356(t–(–0.719))], and Wt = 1123.2[1–e–0.3356(t–(–0.719))]3.08. The calculated length-weight relationship was W = 0.36L3.27 for females and W = 0.03356L3.08 for males. The average condition factor was 1.412 for females and 1.284 for males. Consequently, in the Orenler dam lake, S. cephalus grows very well according to the study’s results.

Studies on Length-Weight Relationship of a Hill-Stream Loach, Schistura cupicola (McClelland)

2009 ◽  
Vol 24 ◽  
pp. 126-129 ◽  
Author(s):  
Aman Ansumal ◽  
Bharat Raj Subba
Keyword(s):  
Body Weight ◽  
Natural History ◽  
Correlation Coefficient ◽  
Regression Coefficient ◽  
Total Body Weight ◽  
Least Square ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Total Body ◽  
Relationship Of

The study of length-weight relationship of a hill-stream loach, Schistura rupicola McClelland collected from Lampengwa Khola, Nepal was done using the least square formula W=aLTb. The values of 'a' and 'b' calculated from the measurement of total length and total body weight were -2.1431 and 3.0508 respectively. The computed value of correlation coefficient (r) was 0.9970.  Key words: Correlation coefficient; Regression coefficient; Allometric growth; Body weight.  Journal of Natural History MuseumVol. 24, 2009Page : 126-129 

scholarly journals DINAMIKA POPULASI DAN LAJU PEMANFAATAN IKAN BANDENG (Chanos chanos) DI WADUK SEMPOR, JAWA TENGAH

2018 ◽  
Vol 10 (1) ◽  
pp. 29
Author(s):  
Aisyah Aisyah Aisyah ◽  
Chairulwan Umar ◽  
Setiya Triharyuni ◽  
Husnah Husnah
Keyword(s):  
Growth Rate ◽  
Mortality Rate ◽  
Logistic Model ◽  
Condition Factor ◽  
Growth Parameters ◽  
Total Mortality ◽  
Von Bertalanffy ◽  
Chanos Chanos ◽  
Weight Relationship ◽  
Exploitation Rate

Ikan bandeng (Chanos chanos) di Waduk Sempor diintroduksi pada tahun 2014 melalui penerapan teknologi perikanan tangkap berbasis budidaya (Culture Based Fisheries, CBF). Penelitian ini bertujuan untuk mengevaluasi pertumbuhan bandeng melalui pengamatan parameter pertumbuhan dan biologi populasinya di Waduk Sempor, Jawa Tengah. Data yang dianalisis diperoleh dari hasil pencatatan enumerator periode September 2014 sampai– Desember 2015. Kajian dinamika populasi ikan bandeng yang meliputi laju pertumbuhan, laju kematian dan tingkat pemanfaatan mengacu pada persamaan Von Bertalanffy dan turunannya. Aspek biologi meliputi hubungan panjang berat mengacu pada model logistik, serta faktor kondisi, keseluruhan analisis dilakukan secara manual dengan program excel 2007. Hasil penelitian menunjukan bahwa parameter pertumbuhan panjang-asimtotik L∞ = 55,97 cm TL dan K= 0,38 per tahun. Laju kematian total (Z) = 1,17 per tahun, kematian alami (M) = 0,56 per tahun, kematian akibat penangkapan (F) = 0,61 per tahun serta laju eksploitasi (E) = 0,5. Pertumbuhan populasi dan laju pemanfaatan menunjukkan bahwa bandeng sudah dimanfaatkan secara optimal oleh masyarakat di sekitar Waduk Sempor.  Milkfish (Chanos chanos) was introduced at 2014 in Sempor Reservoir through culture based fisheries (CBF) technology. This study aims to evaluate population growth of the milkfish in Sempor Reservoir. Data were collected from September 2015 to December 2016, and were analyzed using excel 2007 programe manually. Analysis of length-weight relationship is refers to logistic model, population dynamic like growth rate, mortality and mortality rate are refers to Von Bertalanffy and differentiate of it. Biology of population like length-weight relationship are refers to logistic model, and condition factor. The results showed that growth parameters were L∞ = 55.97 cm TL and K = 0.38 year-1. Total mortality (Z) = 1.17 year-1; M = 0.56 year-1; F = 0.61 year-1; and E=0.5. The growth rate and exploitation rate of Milkfish (Chanos chanos) in Sempor Reservoir has been utilized optimally.

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