Effects of angling with a single-hook and live bait on muskellunge survival

2007 ◽  
pp. 155-162
Author(s):  
Terry L. Margenau
Keyword(s):  
Live Bait

Is the small-scale aquaculture of lambari Deuterodon iguape (Eigenmann 1907) for live bait in recirculating systems economically profitable?

Aquaculture ◽  
2021 ◽  
pp. 737335
Author(s):  
Marcelo Barbosa Henriques ◽  
Leonardo Castilho-Barros ◽  
Marcelo Ricardo de Souza ◽  
Edison Barbieri ◽  
Newton José Rodrigues da Silva ◽  
...  
Keyword(s):  
Small Scale ◽  
Live Bait

scholarly journals Allergic dermatitis caused by Culicoides in Texel sheep in the state of Pará, Brazil

2017 ◽  
Vol 37 (4) ◽  
pp. 301-306 ◽  
Author(s):  
Carlos Alberto Oliveira ◽  
Antonio Ozemir Fialho Silva ◽  
Valíria D. Cerqueira ◽  
Alessandra Scofield ◽  
Milton Begeres Almeida ◽  
...  
Keyword(s):  
Bacterial Infections ◽  
Inflammatory Infiltrate ◽  
Epidemiological Data ◽  
The State ◽  
Culicoides Species ◽  
Allergic Dermatitis ◽  
Control And Prevention ◽  
Skin Biopsies ◽  
Santa Inês ◽  
Live Bait

ABSTRACT: Allergic dermatitis was studied at a farm located in the municipality of Castanhal in the state of Pará, Brazil, from December 2009 to December 2012. Clinical and epidemiological data were obtained during monthly visits to the farm. Skin biopsies were performed for histopathological examinations, and insects were captured with Centers for Disease Control and Prevention (CDC) traps and live-bait entomological vacuum devices. The property housed a herd of both genders, with 45 Santa Inês sheep of different ages and 72 Texel adults. Of the 72 Texel sheep, 56 were affected. Of these, 24 exhibited alopecia, erythema, edema, and crust in the ears, on top of the head, and less often, around the eyes. In addition to the lesions described above, 14 animals exhibited hyperpigmentation of the ears and/or around the eyes and crust in the nose. Another 18 animals exhibited chronic lesions characterized by deformed and thickened ears, alopecia with hyperpigmentation, and in most cases, secondary bacterial infections with abscesses and/or myiasis. Some of these animals had lost part of their ears. Histologically, the lesions were characterized as orthokeratotic hyperkeratosis, acanthosis, vacuolization, and necrosis of epidermal cells. An inflammatory infiltrate was present in the dermis, which was composed mainly of eosinophils and macrophages, some lymphocytes and mast cells, and few neutrophils, in addition to edema and collagen deposition. The Santa Inês sheep were not affected. Among the captured insects, 294 specimens of Culicoides (Hoffmania) plaumanni Spinelli, 57 specimens of C. (Hoffmania) insignis Lutz, and 27 specimens of other Culicoides species were identified. We conclude that C. plaumanni, C. insignis, and possibly other Culicoides species are involved in the etiology of allergic dermatitis in Texel sheep in the state of Pará. Santa Inês sheep in the same region and under the same conditions were not affected, which suggests lower susceptibility of these animals.

scholarly journals Changes in the Eurasian eagle-owl (Bubo bubo) population in Czechia and their association with legal protection

2020 ◽  
Vol 14 (1) ◽  
pp. 29-44
Author(s):  
Jan Andreska ◽  
Dominik Andreska
Keyword(s):  
20Th Century ◽  
Legal Protection ◽  
Legal Regulation ◽  
Birds Of Prey ◽  
Early 20Th Century ◽  
Nature Protection ◽  
Predator Species ◽  
Bubo Bubo ◽  
Eagle Owl ◽  
Live Bait

Abstract The article deals with trends in the Eurasian eagle-owl (Bubo bubo) population in Czechia and the interplay between legal regulation of hunting and nature protection. In the early 20th century, the eagle-owl population in Bohemia decreased to an estimated 20 nesting pairs, and the population in Moravia and Silesia was subsequently estimated to be similarly low. In previous centuries, eagle-owls had been persecuted as pest animals; additionally, their chicks were picked from nests to be kept by hunters for the eagle-owl lure hunting method (“výrovka” in Czech), where they were used as live bait to attract corvids and birds of prey, which were subsequently killed by shooting. As soon as the state of the eagle-owl population was established in the 1900s, the effort to save the autochthonous eagle-owl population commenced. Nevertheless, when eagle-owls became legally protected from killing in the 1930s, the eagle-owl lure hunting method was not prohibited. The intensified use of this hunting method in the 1950s was accompanied by serious decline in the populations of birds of prey in the Czech countryside, when tens of thousands of Eurasian sparrowhawks (Accipiter nisus), northern goshawks (Accipiter gentilis), common buzzards (Buteo buteo) and rough-legged buzzards (B. lagopus) were killed on a yearly basis. The usage of eagle-owl chicks in lure hunting was criticised by ornithologists concerned with the conservation of birds of prey. The eagle-owl thus became a subject of more general debate on the role of predators in nature, and this debate (albeit regarding other predator species) has continued to the present-day. As the eagle-owl population has been growing steadily following the prohibition of its killing in the 1930s, its story may serve as an example of the need for effective legal protection of predators to ensure their survival in the intensively exploited central-European environment. The article examines the successful preserving of the eagle-owl in the Czech countryside, from its low point in the early 20th century towards today’s stable and ever-increasing population, focusing on environmental, conservationist, legal and societal aspects of the issue.

Evaluating risks associated with transport of the ghost shrimp Neotrypaea californiensis as live bait

2008 ◽  
Vol 153 (6) ◽  
pp. 1127-1140 ◽  
Author(s):  
Bruno Pernet ◽  
Aimee Deconinck ◽  
Angela Llaban ◽  
James W. Archie
Keyword(s):  
Ghost Shrimp ◽  
Neotrypaea Californiensis ◽  
Live Bait

Cytogenetic and Molecular Data Support the Occurrence of Three Gymnotus Species (Gymnotiformes: Gymnotidae) Used as Live Bait in Corumbá, Brazil: Implications for Conservation and Management of Professional Fishing

Zebrafish ◽  
2017 ◽  
Vol 14 (2) ◽  
pp. 177-186 ◽  
Author(s):  
Tatiane Pires de Sousa ◽  
Débora Karla Silvestre Marques ◽  
Carla de Andrade Vitorino ◽  
Karina de Cassia Faria ◽  
Gisele da Silva Ferreira Braga ◽  
...  
Keyword(s):  
Molecular Data ◽  
Data Support ◽  
Live Bait ◽  
Conservation And Management

scholarly journals Histological Observation Of Milkfish Organs With Stunting Phenomenon

2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Muhammad Aris ◽  
Sudirto Malan
Keyword(s):  
Nutritional Value ◽  
Slow Growth ◽  
Stocking Density ◽  
Normal Growth ◽  
Farming Systems ◽  
Gill Tissue ◽  
Fish Farming ◽  
Chanos Chanos ◽  
Cultivation System ◽  
Live Bait

Milkfish (Chanos chanos) is an important economic fish. Milkfish is widely consumed because it has high nutritional value. Milkfish is also used as live bait for fishing. In the milkfish cultivation system, increasing production is a very important factor. One of the efforts to increase production in fish farming systems is the application of high stocking density. Constraints to the application of the high stocking density cause the growth of milkfish to be non-uniform, some of them even experience stunting, which is a condition in which the fish experience slow growth. This study aims to observe the condition of the milkfish tissue with normal growth and stunted fish. Milkfish (Chanos chanos) used are fish that have been reared for 6 months. Fish organs that were sampled for observation were stunted and normal (non-stunting) fish. The organs observed were the gills, muscles, and intestines. The results showed that stunted milkfish (Chanos chanos) affected the condition of the gill tissue, muscles, and intestines. The gills are edema and necrosis. Muscles undergo edema, degeneration of muscle fibers, and necrosis. The intestine experiences necrosis or cell death.Keywords: Milkfish; Stunting; Histology.AbstrakIkan Bandeng (Chanos chanos) merupakan ikan bernilai ekonomis penting. Ikan Bandeng banyak dikonsumsi karena mempunyai nilai gizi yang tinggi. Ikan bandeng juga dimanfaatkan sebagai umpan hidup untuk penangkapan ikan. Pada sistem budidaya ikan Bandeng peningkatan produksi menjadi faktor yang sangat penting. Salah satu upaya peningkatan produksi pada sistem budidaya ikan adalah dengan aplikasi padat tebar yang tinggi. Kendala penerapan padat penebaran yang tinggi menyebabkan pertumbuhan ikan Bandeng tidak seragam, bahkan beberapa diantaranya mengalami stunting yang merupakan suatu kondisi dimana ikan mengalami lambatnya pertumbuhan. Penelitian ini, bertujuan untuk mengamati kondisi jaringan ikan bandeng dengan pertumbuhan normal dan ikan yang mengalami stunting. Ikan Bandeng (Chanos chanos) yang digunakan adalah ikan yang telah dipelihara selama 6 bulan. Organ ikan yang menjadi sampel pengamatan adalah ikan yang mengalami stunting dan normal (non-stunting). Organ yang diamati adalah insang, otot, dan usus. Hasil penelitian menunjukan ikan Bandeng (Chanos chanos) yang mengalami stunting mempengaruhi kondisi jaringan insang, otot dan usus. Insang mengalami edema dan necrosis. Otot mengamali edema, degenerasi serabut otot, dan necrosis. Usus mengalami necrosis atau kematian sel.Kata kunci: Ikan Bandeng, Stunting, Histologi

scholarly journals MORPHOMETRICS OF JUVENILE WHITE SHRIMP IN SANTOS (SP, BRAZIL) - AN ATLANTIC STRESSED ESTUARY

2020 ◽  
Vol 46 (3) ◽  
pp. 1-6
Author(s):  
Felippe Veneziani ABBATEPAULO ◽  
◽  
Sergio Luiz dos Santos TUTUI ◽  
Acacio Ribeiro Gomes TOMÁS ◽  
◽  
...  
Keyword(s):  
White Shrimp ◽  
Small Scale ◽  
Body Measurement ◽  
Recreational Fisheries ◽  
Southwest Atlantic ◽  
Small Scale Fisheries ◽  
Total Length ◽  
Males And Females ◽  
Live Bait ◽  
The Relationship

Shrimps are one of the world’s most valuable fishing resources, with the Penaeidae family having the greatest economic importance. In the southwest Atlantic the white shrimp Litopenaeus schmitti plays an important socioeconomic role for small-scale fisheries, and juveniles are targeted as live bait for recreational fisheries. This study was carried out monthly along two periods (May/2009‑January/2010 and March/2011-March/2015) at Santos estuary and aimed to investigate the relationship between morphometric and sex of the early development stages of Litopenaeus schmitti. A total of 6,978 individuals were caught and measured, with no differences (p>0.1) between sexes shown regarding total length or weight. Differences between males and females were found for Total length (TL) x Carapace length (CL) and TL x Total weight (TW) and negative allometries (b<3) were found for all relationships. The results indicate that morphometric differences among sexes seem to be more associated with total length, suggesting that TL could be a more appropriate body measurement to compare specimens of L. schmitti, at least when the analysis includes juveniles. The presence of L. schmitti specimens all year long inside the estuary reinforces the idea of a continuous reproductive cycle with peak periods. Both information comes to fulfill part of the lack of knowledge regarding this species estuarine phases.

scholarly journals KELAYAKAN USAHA POLE AND LINE DI NEGERI HATIVE KECIL KOTA AMBON

2019 ◽  
Vol 3 (1) ◽  
pp. 21-30
Author(s):  
Ferdinan W. M. Haulussy
Keyword(s):  
Payback Period ◽  
Fishing Ground ◽  
Fixed Costs ◽  
Katsuwonus Pelamis ◽  
Business Units ◽  
Operational Costs ◽  
C Value ◽  
Live Bait

Skipjack (Katsuwonus pelamis) is a superior commodity of Maluku which is generally caught by pole and line. This pole and line business in Maluku, especially in Ambon is currently faced some problems including the availability of live bait, distant of fishing ground that have impact on fishing trips and operational costs. Even the investment of this business is quite large, but it is managed simply. This study aims to analyze the feasibility of pole and line fisheries business in Negeri Hative Kecil, Ambon. The survey was conducted on 5 pole and line business units and the data obtained were analyzed with 4 investment criterias. The results show that 1). The average fixed costs, variable costs and revenues of the 5 pole and line business units during the year amounted to Rp 80,566,238; Rp. 72,571,200 and Rp. 878,034,000; and 2). The five pole and line business units in Negeri Hative Kecil are feasible to be developed. The highest NPV value is the second unit, Rp 298,623,599; IRR 38.33%; B/C value 3.04 with a payback period (PP) 1.17 years.

Sign in / Sign up

Export Citation Format

Share Document