USE OF CREDIT EVALUATION PROCEDURES AT AGRICULTURAL BANKS IN MINNESOTA: 1991 SURVEY RESULTS

Agricultural Finance,

मत्स्यबीजाचा संग्रह, वाहतूक व संचयन

The collection of seeds from the wild is the main source to obtain the stocking material for the cage. This can be carried out when the seed production cost is very high or where the availability of seed from nature is in large quantity. It is important to know the biology of the fish species either to duplicate reproductive condition on the farm or to know when and where to collect the fish. The artificially produced seeds in the hatchery are used widely in cage culture practice all over the world to avoid depletion of stock in the wild. The transportation of the seeds to the culture site plays an important role as maximum mortality occurs during this process because of change in metabolic pattern of the fish due to stress. The appropriate quantity of seeds should be stocked in each cage for obtaining good production. This chapter mainly deals with all these aspects in detail

पिंजऱ्याची बांधणी : तत्त्व आणि आराखडा

The culture of finfishes in cages has been practiced for years in countries like Cambodia, Vietnam, Indonesia, Thailand, Malaysia, Singapore and Hongkong. Cage was first used as a holding facility for fish. True cage culture was said to have started in 1243 in China. Use of modern cage materials like synthetic nets, woods and metals started in early 1960’s. The size and shape of the cages are very important for the growth and production of the fishes/ shell fishes living inside it. The design will vary depending on the selected site. The constructed cage must withstand the force of wind and wave while holding the stock safely. The cage must be safe, secure and easy to manage. Circular cage bags make the most efficient use of materials, and thus have the lowest costs per unit volume. Shape is likely to influence effective stocking densities and swimming behaviour, which in turn can influence production. Fish cages can be constructed from a variety of materials. All materials used for the cage should be durable, nontoxic, and rustproof

Automating the Surveillance of Mosquito Vectors from Trapped Specimens Using Computer Vision Techniques

Among all animals, mosquitoes are responsible for the most deaths worldwide. Interestingly, not all types of mosquitoes spread diseases, but rather, a select few alone are competent enough to do so. In the case of any disease outbreak, an important first step is surveillance of vectors (i.e., those mosquitoes capable of spreading diseases). To do this today, public health workers lay several mosquito traps in the area of interest. Hundreds of mosquitoes will get trapped. Naturally, among these hundreds, taxonomists have to identify only the vectors to gauge their density. This process today is manual, requires complex expertise/ training, and is based on visual inspection of each trapped specimen under a microscope. It is long, stressful and self-limiting. This paper presents an innovative solution to this problem. Our technique assumes the presence of an embedded camera (similar to those in smart-phones) that can take pictures of trapped mosquitoes. Our techniques proposed here will then process these images to automatically classify the genus and species type. Our CNN model based on Inception-ResNet V2 and Transfer Learning yielded an overall accuracy of 80% in classifying mosquitoes when trained on 25,867 images of 250 trapped mosquito vector specimens captured via many smart-phone cameras. In particular, the accuracy of our model in classifying Aedes aegypti and Anopheles stephensi mosquitoes (both of which are deadly vectors) is amongst the highest. We present important lessons learned and practical impact of our techniques towards the end of the paper

Innovative exploitation of deepsea crustaceans along the Kerala coast

Exploratory surveys carried out since 1965 by fishing vessels belonging to different governmental agencies have revealed the occurrence of commercially Important deep sea crustaceans in trawlable concentration along the south-west coast of India

Is the deep sea prawn fishery of Kerala sustainable?

The enterprising small and medium shrimp trawler operators of Kerala ventured into deep sea fishing for the first time in November 1999 defying the longheld concept that deep sea prawn resources could be harvested only by means of large trawlers. This endeavour proved successful with the realisation of 25,647 t of deep sea prawns in the first fishing season lasting between November '99 and May 2000

Observations on the prawn fishery off Sakthikulangara in the light of monsoon trawling ban

Sakthikulangara is the most important prawn landing center in Kerala. Study on the prawn fishery exploited by shrimp trawlers for a period of 15 years during 1986-200b at rnis centre indicated a decline in the landings in the first five year period followed by improved fishery between 1991 and 1995. However, decline in catch and catch rate was registered in the next 5 years. Contribution of Sakthikulangara to the Kerala prawn fishery declined from 51% in seventies to 30% in eighties and 24% in nineties. 'Karikkadi' (Parapenaeopsis stylifera) contributed to 68% of the average annual production during 1986 - 2000. Extension of trawling to middle shelf waters and introduction of night trawling transformed the complexion of prawn fishery in the nineties with the addition of nonconventional species such as Trachypenaeus curuirostris, Solenocera choprai and Penaeus canaliculatus. Analysis of data on prawn fishery at Sakthikulangara for a period of 20 years (1981-2000) to study the impact of ban on monsoon trawling has indicated that trawling ban for a short duration of 45 days in the first half of the season is advantageous to the 'Karikkadi' fishery

Artisanal longline fishing for high value fishes off Mumbai, Maharashtra

Sassoon Dock is one of oldest and a major landing center located in Mumbai from where several multiday and single day fishing vessels including trawlers, dolnetters, gillnetters and hook and line units operate. Marine fisheries of Maharashtra is mostly dominated by trawlers and dolnetters while line fishing is done by only a few fishers. The artisanal fishers in Juhu, Colaba and nearby areas of Mumbai are operating a few long line units in small wooden boats (6 - 7 m OAL) or fibre boats fitted with engines of 16 – 24 hp from Sassoon Dock landing centre