scholarly journals Length-weight relationship and condition factor of Trachurus trachurus found in the central-east region of the Moroccan Mediterranean

2021 ◽  
Vol 6 (3) ◽  
pp. 457-468
Author(s):  
Hanae Nasri ◽  
Souad Abdellaoui ◽  
Abdelouadoud Omari ◽  
Omar Kada ◽  
Abdelhafid Chafi ◽  
...  
Keyword(s):  
Condition Factor ◽  
Trachurus Trachurus ◽  
Pelagic Species ◽  
Weight Relationship ◽  
East Region ◽  
Family Living ◽  
The Mediterranean

Trachurus trachurus, is a migratory, semi-pelagic species of the Carangidae family living in schools often associated with mackerel. This species is very common in the Mediterranean, and it is found on all Moroccan coasts. This study aims to determine the length-weight relationship and the condition factor (K) of Trachurus trachurus. Thus, 390 specimens were collected between August 2017 and August 2018 in the central-east region of the Moroccan Mediterranean. The parameters of the length-weight relationship were determined and analyzed by length and sex. It appears that this species has better growth in length than in weight, therefore having a negative or lower allometry. It varies according to sex, length, and season. This result shows that Trachurus trachurus in this study is not overweight in its habitat.

scholarly journals Condition and length-weight relationship of the horse mackerel (Trachurus trachurus L.) and the Mediterranean horse mackerel (Trachurus mediterraneus L.) from the eastern Adriatic sea

2011 ◽  
Vol 63 (2) ◽  
pp. 421-428 ◽  
Author(s):  
M. Santic ◽  
Biljana Radja ◽  
Antonela Paladin
Keyword(s):  
Adriatic Sea ◽  
Condition Factor ◽  
Total Sample ◽  
Bottom Trawl ◽  
Horse Mackerel ◽  
Trachurus Trachurus ◽  
B Values ◽  
Weight Relationship ◽  
Males And Females ◽  
Relationship Of

The length-weight relationship and variation of condition factor in relation to the total length (TL) of Trachurus trachurus (Linnaeus, 1758) and Trachurus mediterraneus (Steindachner, 1868) were studied. Samples were collected in the eastern Adriatic Sea using bottom-trawl during 2008 and 2009. The b values for males, females and total sample showed that the growth of T. trachurus was isometric, i.e. equal in length and weight. The growth of the males and females of T. mediterraneus was positively allometric while the total sample (males, female and immature) showed isometric growth. The condition factor was calculated indicating the smallest values in immature specimens. The highest values of condition factor for males and females of both species were observed in the range of TL from 16 to 19 cm and 31 to 33 cm, respectively.

African Traditional Religion and Trans-Saharan Migration from Ghana

2021 ◽  
pp. 1-26
Author(s):  
Seth Tweneboah ◽  
Edmond Akwasi Agyeman
Keyword(s):  
Family System ◽  
Traditional Religion ◽  
Livelihood Strategy ◽  
East Region ◽  
The People ◽  
The Family ◽  
Youth Migration ◽  
The Mediterranean ◽  
African Traditional Religion

Abstract This paper interrogates an unexamined component of the religion-migration nexus in Ghana. Using African Traditional Religion as a case in point, the paper examines the function shrines play in sustaining youth migration to Libya and across the Mediterranean to Europe. The paper relies on interviews and fieldtrips to migrant sending communities in the Nkoranza area of the Bono East region of central Ghana. The paper gives an account of the daily realities of prospective migrants, returnees and their families. Among other key findings, it is shown that there is an intricate connection between youth migration, the family system and the deities in sustaining the trans-Saharan migration. This migration, we observe, has become a livelihood strategy, the perpetuation of which reassures the survival of not only the people, but their gods as well.

scholarly journals Condition factor of Goniopsis cruentata (Crustacea, Brachyura, Grapsidae) from Mundaú/Manguaba estuarine complex, Alagoas, Brazil

2012 ◽  
Vol 102 (3) ◽  
pp. 285-291 ◽  
Author(s):  
José J. P. R. Lira ◽  
Tereza C. S. Calado ◽  
Marina S. L. C. Araújo
Keyword(s):  
Condition Factor ◽  
Well Being ◽  
Northeast Brazil ◽  
Gonad Weight ◽  
Weight Relationship ◽  
Autumn And Winter ◽  
General Indicator

The condition factor is a parameter which acts as a general indicator of the "well-being" of a species, and it can be obtained through the analysis of width vs. weight relationships. The present work aims to investigate size vs. weight relationship and the condition factor of the crab Goniopsis cruentata (Latreille, 1803). The study area was the Mundaú/Manguaba estuarine complex, Maceió, state of Alagoas, Northeast Brazil. Samplings were monthly accomplished from August 2007 to July 2008. A total of 626 individuals were analyzed, being 309 males and 317 females. Males were larger and heavier than females, what is expected in many brachyuran. The growth was positive allometric to both males (b = 3.42) and females (b = 3.30), not obeying the "cube law". The condition factor of female was higher than that of male crabs, probably due to the gonad weight of females. It also varied seasonally for both sexes, being higher in the autumn and winter in males, and in the autumn and spring in females, and related to the molt and period of spawning intensification.

scholarly journals Hubungan panjang bobot dan faktor kondisi ikan wader bintik dua Barbodes binotatus (Valenciennes, 1842) di Sungai Barambai Samarinda Kalimantan

2019 ◽  
Vol 18 (2) ◽  
pp. 87 ◽  
Author(s):  
. Jusmaldi ◽  
Nova Hariani
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Mean Value ◽  
Male And Female ◽  
Weight Relationship ◽  
Total Length ◽  
East Kalimantan ◽  
Fish Samples

Biology of the spotted barb Barbodes binotatus (Valenciennes, 1842) in Barambai River, east Kalimantan is unknown. This study aimed to analyses sizes of fish, sex ratio, length-weight relationship and condition factor of the spotted barb. A total of 347 fish samples were collected by several gears in Barambai River from August to October 2017. The results of this research showed that the total length of the fish ranged from 45.67 to 146.01 mm and weight ranged from 1.27-43.34 g. The sex ratio of male and female were 1:1.12. The length-weight equations for males was W = 1x10-5 L3.063, W = 8x10-6L3.108 for females, and W = 9 x 10-6 L3.091 for both sexes. The condition factor (K) for the spotted barb was ranged between 0.826 – 2.214 with mean value of 1.163.  AbstrakBiologi ikan wader bintik dua Barbodes binotatus (Valenciennes, 1842) di Sungai Barambai, Kalimantan Timur belum diketahui. Penelitian ini bertujuan menganalisis ukuran ikan, nisbah kelamin, hubungan panjang bobot, dan faktor kon-disi. Total 347 sampel ikan dikumpulkan dengan menggunakan berbagai alat tangkap di Sungai Barambai dari bulan Agustus sampai Oktober 2017. Hasil penelitian menunjukkan bahwa panjang total ikan berkisar dari 45,67 sampai 146,01 mm dan bobot tubuh berkisar 1,27- 43,34 gram. Nisbah kelamin jantan dan betina 1: 1,12. Model hubungan panjang bobot ikan jantan W = 1x10-5 L3,063, ikan betina W = 8x10-6L3,108,dan keseluruhan jenis ikan W =  9 x 10-6  L3,091. Faktor kondisi (K) ikanwader bintik dua berkisar antara 0,826 - 2,214 dan rata-rata 1,163. 

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