scholarly journals The Digestive Tract Morphology and Clark index of Mud Sleeper Butis koilomatodon Living in some Coastal and Estuarine areas belonging to Tra Vinh, Soc Trang, Bac Lieu and Ca Mau

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Dinh Minh Quang ◽  
Nguyen Thi Nha Y ◽  
Lam Thi Huyen Tran ◽  
Phan Thanh Gieo
Keyword(s):  
Digestive Tract ◽  
Mekong Delta ◽  
Sampling Time ◽  
Fish Length ◽  
Fish Size ◽  
Total Length ◽  
Fish Samples ◽  
Size Groups ◽  
And Gender ◽  
Hoa Binh

This study provides new data on the characteristics of the gastrointestinal morphology and the variation of Clark index according to sexes, fish size groups, seasons and sampling sites of mud sleeper Butis koilomatodon, one of the commercially valuable gobiid species in the Mekong Delta. Analytical results of 1,227 fish samples collected monthly from April 2019 to March 2020 in Duyen Hai (Tra Vinh), Cu Lao Dung (Soc Trang), Tran De (Soc Trang), Hoa Binh (Bac Lieu), Dong Hai (Bac Lieu) and Dam Doi (Ca Mau) showed that this species had a slightly sloping mouth, the length between two jaws was relatively equal, teeth were small and grew in long lines on both jaws with the outer row having larger teeth. The length of the gut was shorter than the total length of the fish and so this species belonged to predator group. The Clark index depended on length of fish, sampling time and site but excluding season and gender. It was also effected by interactions of fish length x season; fish length x site and season x site. Conversly, the interactions of gender x season and gender x site did not impact on the Clark index. The outcomes of research will provide useful data in artificial aquaculture Butis koilomatodon.

scholarly journals The Morphological Measurement Variations of Periophthalmus chrysospilos along the Coastline in the Mekong Delta

2021 ◽  
Author(s):  
Le Trung Hieu ◽  
Dinh Minh Quang ◽  
Hua Van U ◽  
Nguyen Huu Duc Ton
Keyword(s):  
Morphological Variation ◽  
Body Height ◽  
Mekong Delta ◽  
Wet Season ◽  
Morphological Variations ◽  
Total Length ◽  
Fish Samples ◽  
Eye Diameter ◽  
And Gender ◽  
Study Sites

This study provided data on morphological variation in Periophthalmus chrysospilos. The study was carried out in four provinces from Tra Vinh to Soc Trang, Bac Lieu and Ca Mau. Fish samples were collected by hand-catching over 12 months from April 2020 to March 2021. Analysed results of a collection of 1,031 individuals (508 females and 523 males) showed that the total length (TL) and weight (W) of the female Periophthalmus chrysospilos were higher than that of the male, higher in the wet season than in the dry season and gradually increased from Tra Vinh to Ca Mau. Besides, the total length and weight of fish were also influenced by the interaction of season ´ site and gender ´ site. In addition, the morphological variation of this species such as eye diameter (ED), eye distance (DE), body height (BD), head length (HL) and taxonomic ratios such as HL/TL, BD/TL, ED/HL, DE/HL was gender, seasonal fluctuations and study sites. These morphological variations and ratios were also influenced by interactions season ´ site interactions. The findings contributed further information to fish identification and the ecological adaptation understanding of this species.

scholarly journals Morphometric and Meristic Variations of Glossogobius Sparsipapillus along the Coastline in the Mekong Delta, Vietnam

2020 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Dinh QM
Keyword(s):  
Body Weight ◽  
Mekong Delta ◽  
Ecological Adaptation ◽  
Fish Length ◽  
Total Length ◽  
Males And Females ◽  
Hoa Binh

This study contributed to the variation of morphometric and meristic measurements of Glossogobius sparsipapillus , a target catching fish in the Mekong Delta. A total of 583 individuals (293 males and 290 females) were collected during dry and wet seasons (April 2019 to January 2020) at three studied sites from Vinh Hau, Hoa Binh, Bac Lieu to Dien Hai, Dong Hai, Bac Lieu and Tan Thuan, Dam Doi, Ca Mau. The analysis results showed that total length and body weight of this species varied with seasons and studied sites, but not genders. The variations of fish length and weight of males and females depended on seasons but not studied sites. The interaction of site and season variables influenced the change of fish length and weight. The results supplied additional knowledge for fish identification and ecological adaptation understanding in the study regions.

scholarly journals KOMPOSISI MAKANAN IKAN SEPAT SIAM (Trichopodus pectoralis Regan, 1910) DI DANAU TALIWANG, SUMBAWA

2015 ◽  
Vol 6 (1) ◽  
pp. 41
Author(s):  
Prawira ARP Tampubolon ◽  
M.F. Rahardjo
Keyword(s):  
Body Size ◽  
Diet Composition ◽  
Sampling Time ◽  
Total Weight ◽  
Target Species ◽  
Total Length ◽  
Fish Samples

Ikan sepat siam (Trichopodus pectoralis, Regan 1910) merupakan salah satu target penangkapan ikan di Danau Taliwang, Sumbawa. Penelitian ini bertujuan untukmendeskripsikan komposisi makanan ikan sepat siam di Danau Taliwang. Pengambilan contoh ikan dilakukan pada bulanMei–Juli 2010 menggunakan jaring insang. Analisis komponen makanan menggunakan indeks bagian terbesar. Total ikan contoh yang tertangkap selama penelitian sebanyak 110 ekor yang terdiri atas 59 ekor ikan jantan dan 51 ekor ikan betina. Panjang total ikan yang tertangkap berkisar antara 125–196 mm dan bobot antara 26,7–141,7 gram. Makanan ikan sepat terdiri atas mikroalga, Rotifera, Ostracoda dan serangga dengan makanan utama adalah mikroalga dari Kelas Bacillariophyceae (generaMelosira,Navicula, dan Diatoma).Komposisimakanan berdasarkan bulan pengamatan dan ukuran tubuh relatif sama.Snakeskin gouramy (Trichopodus pectoralis, Regan 1910) is a one of many target species of fish caught in Taliwang Lake, Sumbawa. The objective of this study is to describe the diet composition of snakeskin gouramy found in Taliwang Lake. The fish samples were caught using gillnet during May–July 2010. The diet composition was analyzed by using the index of preponderance. The total number of fish caught during the research was 110 fishes, comprising 59 males and 51 females. The range of total length and total weight of the samples were 125–196 mm and 26.7–141.7 grams, respectively. Snakeskin gouramy in Taliwang Lake mainly feed on Microalgae, Rotifer, Ostracod, and insect. Their main diet, however, is Microalgae from the class of Bacillariophyceae (genera of Melosira, Navicula, and Diatoma). The diet composition of the fish which was determined from the sampling time and body size is relatively the same.

scholarly journals Variation in diet composition of the mudskipper, Periophthalmodon septemradiatus, from Hau River, Vietnam

2020 ◽  
Vol 96 (3) ◽  
pp. 487-500 ◽  
Author(s):  
Quang Minh Dinh ◽  
Lam Thanh Tran ◽  
Tuyet Thi Minh Tran ◽  
Diem Kieu To ◽  
Tien Thi Kieu Nguyen ◽  
...  
Keyword(s):  
Data Analysis ◽  
Diet Composition ◽  
Food Item ◽  
Mekong Delta ◽  
Food Composition ◽  
Carnivorous Fish ◽  
Fish Size ◽  
Fish Samples ◽  
Males And Females ◽  
Main Food Item

Periophthalmodon septemradiatus (Hamilton, 1822) is a mudskipper of the Mekong Delta that can be found along estuaries and lower reaches of rivers. In the present study, we determined diet and feeding ecology of this species by analyzing the contents within the stomachs of 1360 fish samples collected from August 2017 to July 2018. Data analysis suggested that P. septemradiatus is a carnivorous fish. We found six main food item categories: small fishes, prawns (Acetes spp.), crabs (Uca spp.), molluscs, ants (Dolichoderus sp.), and detritus. Both males and females at different sizes, seasons, and habitats ingest primarily Dolichoderus sp., secondarily detritus, and rarely other prey. Diet composition was similar between sexes but varied according to fish size, season, and habitat. Dolichoderus sp. and detritus regulate the spatial variation of food composition. Our findings contribute to future artificial cultivation for conservation.

scholarly journals Reproductive biology of striped snakehead, Channa striata (Bloch, 1793) in Lake Rawa Pening, Central Java

2019 ◽  
Vol 19 (3) ◽  
pp. 475
Author(s):  
Djumanto Djumanto ◽  
Atik Murjiyanti ◽  
Nuravida Azlina ◽  
Aisyah Nurulitaerka ◽  
Anissa Dwiramdhani
Keyword(s):  
Condition Factor ◽  
Fish Length ◽  
Oocyte Diameter ◽  
Total Length ◽  
Central Java ◽  
Gonadal Maturity ◽  
Fish Samples ◽  
Channa Striata ◽  
First Maturity ◽  
The Relationship

The striped snakehead (Channa striata Bloch, 1793) is the top predator fish found in Lake Rawa Pening and other freshwaters. Its population was declining due to very high fishing pressures, habitat quality decreases, and other fac-tors. The aim of this study was to examine the condition factor and fecundity of snakehead in Lake Rawa Pening. Fish sampling was carried out monthly from October 2017 to August 2018, using fish fence made from bamboo blinds operated by local fishermen. Total length, individual body weight, stage of gonadal maturity (MS), gonadal weight, and oocytes diameter of fish samples were measured. Fish condition factor, gonado somatic index (GSI), oocyte diameter, fecundity, and the size of first maturity of fish were determined. There were 409 individuals snakehead fish collected consisting of 138 females and 271 males. Fish length ranged from 234-646 mm (males) and 242-648 mm (females). The average of the condition factor (K) of male ranged from 0.778 to 0.923, while in female ranged from 0.826 to 0.929. The relationship between the length-weight of male and female was isometric. The percentage of female snakehead that reached MS I; II; III; IV was 15.6; 27.0; 37.4; 20.0%, respectively. The GSI ranged from 1.52 to 3.54. Oocyte diameter ranged from 0.5 to 1.7 mm with an average of 1.2 mm. Fecundity ranged from 2,843-23,230 eggs with an average of 9,167 eggs. The female snakehead was predicted to reach the first sexual maturity at a total length of 315 mm.

scholarly journals Proximate Composition and Its Seasonality of the Mediterranean Green Crab:Carcinus aestuariiNardo, 1847 (Brachyura, Portunidae), in Southern Tunisian Waters (Central Mediterranean)

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Sonia Baklouti ◽  
Abdelkarim Derbali ◽  
Khalifa Dhieb ◽  
Wassim Kammoun ◽  
Othman Jarboui
Keyword(s):  
Proximate Composition ◽  
Nutritional Value ◽  
Central Mediterranean ◽  
Potential Health ◽  
Lipid Contents ◽  
Size Groups ◽  
The Mediterranean ◽  
And Gender ◽  
Edible Parts

The Mediterranean green crabCarcinus aestuariiwas recorded in Tunisian waters several years ago. However, since its record in the Gulf of Gabes, no studies have been carried out about the spread of this crab. Because there is a lack of nutritional information concerning this species, this study aimed to characterize the chemical composition of hepatopancreas and gonads ofCarcinus aestuariiin view of potential health implication for consumers and to determine the seasonal nutritional quality of females and males taken separately for various size groups. In this study, a total of 1399 individuals were collected along the Sfax coast. The nutritional value of various edible parts ofCarcinus aestuariiwas evaluated, and gender differences in terms of edible yield and proximate composition, protein, mineral, lipid, and water content, were compared for season, age, and sex. The biochemical compositions were strongly influenced by sex, age, and seasons. The highest protein and lipid contents were detected in gonads and hepatopancreas of females. Autumn was the season with the highest protein content and lowest fat content. Therefore, people with particular diets constrains should consume the ovaries of females in autumn and it should moderate in winter. The hepatopancreas and gonads from Tunisian waters can be a good source of proteins and mineral.

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. 

scholarly journals Determinación de plomo, cadmio, mercurio y Bases Volátiles Nitrogenadas Totales (NBVT) en el músculo de tiburón azul Prionace glauca procedente de la zona sur del Perú

2020 ◽  
Vol 54 (3) ◽  
pp. 336
Author(s):  
Andrés Reátegui-Quispe ◽  
Daniel Pariona-Velarde
Keyword(s):  
Muscle Tissue ◽  
Total Volatile ◽  
Blue Shark ◽  
Fishery Resource ◽  
Prionace Glauca ◽  
Positive Correlation ◽  
Southern Zone ◽  
Total Length ◽  
Elasmobranch Species ◽  
And Gender

Blue shark Prionace glauca is one of the most important elasmobranch species landed and consumed in Peru. Due to its importance as fishery resource, were evaluated lead (Pb), cadmium (Cd), mercury (Hg) and Total Volatile Base Nitrogen (TVBN) in the muscle tissue of 25 specimens, captured in the southern zone of Peruvian sea. These analytes were compared with current regulations and were determined its relationship with sex and total length (TL). We obtained ranges between 0.04-0.25, 0.01-0.04 and 0.09-0.50 mg kg-1 for Pb, Cd and Hg, respectively. TVBN values were between 38.50-94.60 mg TVBN 100 g-1. Analytes did not have differences with TL and gender. Pb was positive correlation with TL, while the Cd, Hg and TVBN did not. This study provides sanitary information of blue shark muscle from Peruvian waters.

scholarly journals The Consumed Natural Diet of Chondrostoma regium (Heckel, 1843) from Tigris River, Salah Al-Deen Province

2011 ◽  
Vol 8 (1) ◽  
pp. 348-356
Author(s):  
Baghdad Science Journal
Keyword(s):  
Green Algae ◽  
Important Food ◽  
Food Category ◽  
Natural Diet ◽  
Fish Size ◽  
Blue Green Algae ◽  
Tigris River ◽  
Size Groups ◽  
Ranking Index ◽  
Volumetric Methods

The foreguts of a total of 515 fish of Chondrostoma regium (Heckel, 1843) (locally: Bala’aot Malloky) were studied. These fish were collected from Tigris River at Salah Al-Deen Province (between Al-Hagag & Yathrib) for 20 months between March and October of the next year. Detritus, plant in origin materials (19.6%, 23.0% & 24.9%); green and blue green algae, mostly Cladophora, Cosmarium and Merismpedia sp. (17.1%, 12.9% & 12.2%) and diatoms, mostly Diatoma, Chanathes, Amphora and Cyulbella sp. (16.9%, 8.8% & 8.2%) were the main food categories taken by these fishes according to occurrence (O%), volumetric methods (V%) and ranking index (R%). Debris (not part of the diet) took 45.3% of the studied fish foreguts by volume. Detritus was also the most important food category (25.9%, 18.2%, 22.9% & 19.8%, by ranking index) at all sampling stations respectively, and taken by different fish size groups (168-200, 201-300 & 301-350mm).The diet overlaps between these fish size groups and that between different sampling stations were ranged between 0.86-1.0, i.e. fish were mainly feeding on the same food organisms.

scholarly journals Nutritional role of amniotic fluid: clues from infants with congenital obstruction of the digestive tract

2018 ◽  
Vol 104 (2) ◽  
pp. F199-F201 ◽  
Author(s):  
Nigel J Hall ◽  
Melanie Drewett ◽  
David Burge
Keyword(s):  
Amniotic Fluid ◽  
Digestive Tract ◽  
Gestational Age ◽  
Significant Negative Correlation ◽  
Control Group ◽  
Z Score ◽  
Term Infants ◽  
Z Scores ◽  
And Gender

AimsTo investigate the role played by amniotic fluid in late fetal nutrition by analysis of infants born with digestive tract atresia.MethodsBirth weight (BW), gestational age and gender of infants born with oesophageal (OA), duodenal (DA), jejunal (JA) and ileal atresia (IA) were recorded and BW Z-scores compared. Infants with incomplete obstruction (stenosis), chromosomal or syndromic conditions and multiple congenital malformations were excluded. Term infants admitted with suspected postnatal intestinal obstruction in whom no congenital malformation was found were used as a control group.ResultsA total of 584 infants were identified comprising 148 OA, 60 DA, 26 JA and 57 IA with 293 in the control group. Infants with OA and DA had statistically significantly lower BW Z-score than controls. However, BW Z-score for infants with more distal atresia (JA and IA) was similar to controls. When compared with infants with OA, BW Z-score for infants with more distal atresia was higher than that for OA. BW Z-score in infants with OA was significantly lower in those born at term compared with those born preterm (mean±SD −0.92±1.0 vs −0.48±0.87; p=0.01) with a significant negative correlation between BW Z-score and increasing gestational age (R2=0.12; p<0.0001). This effect of gestational age was not seen in other atresias.ConclusionThese observations support the concept that reduced enteral absorption of amniotic fluid due to high digestive tract obstruction in utero reduces fetal growth. The effect is greater when the obstruction is more proximal and with advancing gestation.

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