scholarly journals Estudo dos aspectos alimentares de Trichiurus lepturus (Pisces: Perciformes) na costa Maranhense, Brasil

2021 ◽  
Vol 10 (13) ◽  
pp. e81101320924
Author(s):  
Alice Viene Serra Garcia ◽  
Rosiele Assunção Matão ◽  
Yago Bruno Silveira Nunes ◽  
Jailza Freitas ◽  
Jackellynne Fernanda Farias Fernandes ◽  
...  
Keyword(s):  
Trichiurus Lepturus

O trabalho consiste em conhecer os aspectos da dieta natural do Trichiurus lepturus, uma vez que o mesmo apresenta grande valor comercial para o estado do Maranhão. A espécie analisada foi proveniente da pesca comercial, cuja captura aconteceu no município da Raposa – MA, entre os períodos de janeiro a dezembro de 2019. Foram estudados 144 organismos. Para cada espécie de presa, calcularam-se as frequências de ocorrência numérica e de biomassa e Índice de Importância Relativa (IIR) na dieta. Quanto aos itens alimentares presentes na dieta da espécie, observou-se uma dieta baseada em peixes, IND, sardinha (Sardinella brasiliensis) e camarões peneídeos. A região em estudo pode ser caracterizada como local de alimentação da espécie, visto que apresenta dieta composta por organismos neríticos de hábitos pelágicos associados a áreas costeiras e estuarinas, sendo peixes e IND os itens mais específicos na dieta. Observou-se que durante a estação seca (julho a dezembro), quando a produtividade biológica é baixa, a atividade alimentar aumenta. A dieta do macho é baseada em resto de peixes, enquanto a IND da fêmea é dominante. Todos os exemplares imaturos machos apresentaram seus estômagos totalmente preenchidos e as fêmeas apresentaram uma grande quantidade de itens não identificados (IND).

Fecundity and Gonado-somatic Index of Trichiurus lepturus (Linnaeus, 1758) Along the Zamboanga del Norte Coast

2018 ◽  
Vol 6 (7) ◽  
pp. 120
Author(s):  
Ma. Dulce C. Guillena
Keyword(s):  
Sex Ratio ◽  
Stock Assessment ◽  
Chi Square ◽  
Moon Phases ◽  
Ovary Weight ◽  
Moment Coefficient ◽  
Trichiurus Lepturus ◽  
Significant Difference ◽  
The Relationship ◽  
Somatic Index

Gonado-somatic index and fecundity are tools for measuring the sexual maturity and ability of animals to reproduce.  This study investigates the reproduction of Trichiurus lepturus. Specifically, this aimed to determine the sex ratio, the GSI, the relationship between fecundity and total length, fecundity and total weight, fecundity and ovary weight. The Descriptive Method of research was used.  Percentage and chi-square was utilized in determining the percentage of occurrence and sex ratio respectively.   Pearson r Product Moment Coefficient of Correlation was used to determine the relationships of the parameters. The study revealed that females outnumbered males and the sex ratio for different month showed significant difference.  Spawning season was observed to occur in November and December as revealed in its GSI values and it synchronized with the full and new moon phases.  Fecundity is positively correlated with body weight, body size, and ovary weight where ovary weight is observed to be the best index for fecundity.  The results of this study could be used further for formal stock assessment of cutlassfish fishery.

scholarly journals Feeding preference of adult females of ribbonfish Trichiurus lepturus through prey proximate-composition and caloric values

2012 ◽  
Vol 10 (1) ◽  
pp. 197-203 ◽  
Author(s):  
Vanessa Trindade Bittar ◽  
Danielle Rodrigues Awabdi ◽  
William Cristiane Teles Tonini ◽  
Manuel Vazquez Vidal Junior ◽  
Ana Paula Madeira Di Beneditto
Keyword(s):  
Proximate Composition ◽  
Energy Demand ◽  
Feeding Preference ◽  
Food Selectivity ◽  
Southeastern Brazil ◽  
Caloric Content ◽  
Caloric Value ◽  
Adult Females ◽  
Trichiurus Lepturus ◽  
Prey Protein

In the present study we analysed the proximate-composition and caloric values of the preferred prey consumed by ribbonfish, Trichiurus lepturus L. 1758 (adult females), that are distributed in the inner continental shelf from northern Rio de Janeiro State, southeastern Brazil (~22ºS), assessing the potential of nutritional and energetic approach as a tool to understand the feeding selective pattern of this marine top carnivore. The preferred prey of this predator composed of fish co-specifics, Pellona harroweri, Chirocentrodon bleekerianus, Lycengraulis grossidens, Peprilus paru, squid Doryteuthis plei, and shrimp Xiphopenaeus kroyeri were collected from 2007 to 2010 for proximate-composition (water, protein, lipid, ash, and carbohydrate) and caloric value analyses. The correspondence analysis showed that protein is the main component in the prey species (61.32% of variance explained), standing out from the other nutrients. Lipid has the highest percentage related to L. grossidens, ash to X. kroyeri and carbohydrate to D. plei. The strong correlations between protein and caloric value (positive) and lipid and caloric value (negative) indicated that T. lepturus is attending its energy demand through the prey protein content. This work elucidated the feeding preference of adult females of T. lepturus in relation to nutritional and caloric content of their preferred prey. The species showed food selectivity to prey that provide more energy per ingested biomass, so that the feeding events can maximize the predator's caloric gain, which is obtained by a protein-based diet.

Stomach contents of the marine tucuxi dolphin (Sotalia guianensis) from Rio de Janeiro, south-eastern Brazil

2007 ◽  
Vol 87 (1) ◽  
pp. 253-254 ◽  
Author(s):  
Ana Paula Madeira Di Beneditto ◽  
Salvatore Siciliano
Keyword(s):  
Rio De Janeiro ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Additional Information ◽  
Sotalia Guianensis ◽  
South Eastern ◽  
Eastern Brazil ◽  
Trichiurus Lepturus ◽  
Cynoscion Guatucupa ◽  
Janeiro State

Along the central coast of Rio de Janeiro State (22°25′S–23°00′S), south-eastern Brazil, the marine tucuxi dolphin (Sotalia guianensis) feeds on neritic prey that are distributed through the water column and are abundant all year round. The most frequently found species were the teleost fish Trichiurus lepturus, Cynoscion guatucupa, Isopisthus parvipinnis and Porichthys porossisimus. Fish species were more important than cephalopod species in the diet of the marine tucuxi. Back calculations of prey sizes indicated that they feed mainly on young specimens. The present study provided additional information on the feeding habits of the marine tucuxi dolphin.

scholarly journals Utilization of Trash Fish for Cultivation of Crablet Mud Crab (Scylla serrata)

2020 ◽  
Vol 25 (3) ◽  
pp. 110-114
Author(s):  
Heppi Iromo ◽  
Dori Rachmawani ◽  
Abdul Jabarsyah ◽  
Zainuddin Zainuddin
Keyword(s):  
Carapace Width ◽  
Survival Rates ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Growth And Survival ◽  
Weight Growth ◽  
Randomized Design ◽  
Trichiurus Lepturus ◽  
Trash Fish ◽  
In The Wild

The high demand for mud crabs in North Kalimantan causes catch to increase in the wild. If it is not balanced with efforts to increase its aquaculture of mud crab, in the future there will be a decline in population. This study aims to determine the growth and survival rate of mud crab seed (crablet, Scylla serrata) in the application method of different types of trash fish. This research used a completely randomized design with 4 treatments and 3 replications. The Crablet used carapace width average 0.07-0.09 cm and weigh average 0.05-0.07 g with total 150 crablets. The treatments applied by trash fish were (A) Tilapia Fish (Oreochromis mossambicus), (B) Longfin Herrings Fish (Ilisha elongata), (C) Sword Fish (Trichiurus lepturus) and (D) Snails (Telescopium telescopium). The results were The best weight growth of crablet occurs in the treatment of T. lepturus (P>0.05) and  the highest of survival rates of crablet were found in treatment T. telescopium (P<0.05)  than the other. The trash fish were used turned out to be able survival of crablet mud crab (Scylla serrata).

scholarly journals Bycatch composition of cutlassfish trawlers during fishing season in Bushehr and Hormozgan, Persian Gulf, Iran

2018 ◽  
Vol 19 (6) ◽  
pp. 2275-2282
Author(s):  
AHMAD FOULADI SABET ◽  
SEYED YOUSEF PAIGHAMBARI ◽  
MOJTABA POULADI ◽  
HADI RAEISI ◽  
REZA ABBASPOUR NADERI
Keyword(s):  
Data Collection ◽  
Persian Gulf ◽  
Mesh Size ◽  
Similarity Analysis ◽  
Fishing Season ◽  
Trichiurus Lepturus ◽  
Significant Difference ◽  
Catch Composition

Fouladi Sabet A, Paighambari SY, Pouladi M, Raeisi H, Abbaspour Naderi R. 2018. Bycatch composition of cutlassfish trawlers during fishing season in Bushehr and Hormozgan, Persian Gulf, Iran. Biodiversitas 19: 2275-2282. This investigation was conducted to determine the bycatch composition of cutlassfish (Trichiurus lepturus) trawlers in Bushehr and Hormozgan waters during fishing season 2013. Data collection was carried out in the summer for Bushehr and in the autumn for Hormozgan province for one month. All trawler vessels were equipped with a 36 m head rope and 75 mm stretched mesh size in the codend and 90 to 200 mm stretched mesh size in the panel. 47 species included 35 species of teleosts, 9 species of elasmobranches and 3 species of invertebrates were identified in Bushehr. Also, 48 species included 38 species of teleosts, 7 species of elasmobranches and 3 species of invertebrates were identified in Hormozgan. The weight and numerical averages of bycatch species were 25.41 (kg h-1) and 205.9 (n h-1) in Bushehr, and 92.58 (kg h-1) and 440.4 (n h-1) in Hormozagan. I. megaloptera, S. tumbil, N. japonicus, D. acuta, C. sexfasciatus, L. equulus in Bushehr and P. sextarius, I. megalopteran, M. cinereus, P. macrophthalmus, N. japonicus and S. tumbil in Hormozgan had highest catch weight. Based on the weight and number, PCA and nMDS methods were indicative of two different assemblages in hunting places. Furthermore, ANOSIM similarity analysis confirmed the results of PCA and nMDS and showed a significant difference in the catch composition of two fishing zones.

scholarly journals ASPECTOS BIOLÓGICOS E SOCIOECONÔMICOS DA PESCA ESPORTIVA NO “DECK DO PESCADOR" DE SANTOS (SP, BRASIL)

2016 ◽  
Vol 20 (1) ◽  
Author(s):  
Walter Barrella ◽  
Natália Cachola ◽  
Milena Ramires ◽  
Matheus Marcos Rotundo
Keyword(s):  
Biological Characteristics ◽  
Commercial Fishing ◽  
College Degree ◽  
Sport Fishing ◽  
Target Species ◽  
Fish Stocks ◽  
Trichiurus Lepturus ◽  
Socioeconomic Profile ◽  
Micropogonias Furnieri

Sport fishing is one of the fastest growing leisure categories in today's world. In Brazil it is also practiced as a sport or leisure, noncommercial purposes. However, few studies are conducted in order to manage this activity in a sustainable manner. This study aimed to analyze sport fishing, practiced the "Fisherman’s Deck" (Santos, SP, Brazil), describing their biological characteristics and the socioeconomic profile of its participants. We interviewed 150 fishermen, aged between 12 and 82 years, 85% male. The majority (56%) has a college degree and resides near the fishing spot. The target species are swordfish (Trichiurus lepturus), bass (Centropomus spp.), Hake (Cynoscion spp.), betara (Menticirrhus americanus), corvina (Micropogonias furnieri) and hake-yellow (Macrodon atricauda). Three types of fishing, bottom fishing, surface and crab were identified. Fishermen indicated that fish stocks have declined due to increased commercial fishing and pollution. Each fishery lasted on average 5.0 (S.D.=2.1) hours and captured 850,8g (S.D.=962.5) g / angler / day. The estimated catch for the study period was 1314.8 (S.D.=1919.1) kg, representing less than 3% of fish landed by commercial fishing. Therefore, sport fishing from "Fisherman’s Deck" causes low impact to regional fish stocks.

scholarly journals CHARACTERIZATION OF ARTISANAL FISHING IN FISHWEIRS, THE NORTH COAST OF PARAIBA, BRAZIL

2017 ◽  
Vol 49 (2) ◽  
pp. 92
Author(s):  
Glória Cristina Cornélio Do Nascimento ◽  
Eduardo Beltrão de Lucena Córdula ◽  
Reinaldo Farias Paiva De Lucena ◽  
Ricardo De Souza Rosa ◽  
José Da Silva Mourão
Keyword(s):  
North Coast ◽  
Artisanal Fishing ◽  
The North ◽  
Trichiurus Lepturus ◽  
Caranx Hippos

Estratégias tradicionais de pesca são utilizadas por comunidades de pescadores em todo o mundo, dentre elas os “currais”, que são armadilhas fixas construídas na zona costeira. O objetivo do presente estudo foi caracterizar e descrever as formas de manejo destes “currais” pelos pescadores do litoral da Paraíba. Foram utilizadas entrevistas livres, “rapport”,“Snow ball” e formulário semiestruturado nas visitas mensais aos cinco “currais” entre os meses de novembro 2012 até março de 2013. Foi quantificada a produção dos currais e identificada as espécies mais capturadas. Os dados mostraram que estas armadilhas são constituídas por compartimentos e passam por fases em terra e mar até serem totalmente ativadas. O total da produção de peixes foi de 303 kg. As espécies predominantes foram: Mugil curema and Mugil liza, Trichiurus lepturus, Caranx hippos, Selene vomer, Selene setapinnis, Diapterus auratus e Diapterus rhombeus. Conclui-se que este tipo de pesca é utilizado há décadas no litoral da Paraíba, demonstrando existir manejo e técnicas próprias com relações de trabalhos inerentes a este tipo de armadilha.

scholarly journals The demersal fish composition and catch per unit effort of mini bottom trawl at the coast of Demak Regency Central Java

2021 ◽  
Vol 322 ◽  
pp. 03006
Author(s):  
Naliyana Fitriya ◽  
Nahlah Alfiatuunisa ◽  
Suwarman Partsuwiryo ◽  
Eko Setyobudi
Keyword(s):  
Demersal Fish ◽  
Bottom Trawl ◽  
North Coast ◽  
Catch Per Unit Effort ◽  
The North ◽  
Central Java ◽  
Unit Effort ◽  
Trichiurus Lepturus ◽  
Trawl Fishing ◽  
Trawl Catches

Demak is a coastal area on the North Coast of Java with a large enough potential for demersal fish resources. This research aimed to determine the composition, the length and weight distribution, and catch per unit effort (CPUE) of demersal fish caught using mini bottom trawl at the north coast of Demak Regency. The research was carried out in October-December 2020 by observation of ten trips of mini bottom trawl fishing. Each fish captured was then grouped by type, identified, and measured its length and weight. The result showed that 38 species consist of 31 fishes, four mollusks, and three crustaceans. The fish captured dominated by pony fish (Leiognathus equulus) as much as 31.23% and largehead hairtail (Trichiurus lepturus) of 23.52%. The catch per unit effort (CPUE) average of mini bottom trawl was 44.77 kg/trip. Mainly fish (more than 95%) caught in small size compared it’s the maximum attainable length (L-max), with all the weight ranges from 0.3 to 520 g and more than 98% sized 0.3-80 g. Mini bottom trawl catches many types of fish and small size; therefore, mini bottom trawl is classified as a type of fishing gear with a very low selectivity level.

scholarly journals Biologi Reproduksi Ikan Layur (Trichiurus lepturus Linnaeus, 1758) di Teluk Palabuhanratu, Sukabumi, Jawa Barat

2019 ◽  
Vol 2 (2) ◽  
pp. 9
Author(s):  
Zenty Islamiati ◽  
Zairion Zairion ◽  
Mennofatria Boer
Keyword(s):  
Trichiurus Lepturus ◽  
Partial Spawner

Ikan layur merupakan salah satu ikan ekonomis penting dan telah menjadi komoditas ekspor. Permintaan yang terus meningkat menyebabkan peningkatan upaya penangkapan yang dapat mengancam ketersediaan sumberdaya ikan layur. Penelitian ini bertujuan menganalisis aspek biologi reproduksi ikan layur di Teluk Palabuhanratu. Penelitian dilaksanakan pada bulan Mei hingga September 2017. Pengambilan ikan contoh menggunakan metode penarikan contoh acak sederhana. Ukuran ikan layur yang diteliti sebanyak 639 ekor dengan nisbah kelamin antara jantan dan betina sebesar 1:2,20 atau didominasi ikan betina. Potensi reproduksi ikan layur betina tergolong tinggi dengan rata-rata 13 018 butir telur. Musim pemijahan ikan layur diduga terjadi selama periode pengamatan dan puncak pemijahan terindikasi terjadi pada bulan Juni dengan tipe pemijahan partial spawner. Ikan layur jantan mencapai ukuran pertama kali matang gonad (Lm) lebih awal dibandingkan dengan ikan layur betina, yaitu pada ukuran 641,37 mm untuk jantan dan 755,28 mm untuk betina.

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