Enable Block: 

The paper attempts to study the Indigenous Technical Knowledge of the fisher folk of fishing villages, Maruvakkad and Mallipuram belonging to Chellanam and Elankunnapuzha Panchayats, respectively of Palluruthy and Vypeen Block, Ernakulam.

Research that argues dams have no direct effect on the migration of juvenile salmon is roiling waters in the US Pacific Northwest. The study, published in PLoS Biology, uses a new way to tag fish to compare the heavily dammed Columbia River system
with the free-flowing Fraser River to the north in British Columbia, Canada.

The current study is on East Calcutta Wetland (ECW) which is a model for multi-use resource recovery system with activities like pisciculture and agriculture. The entire city's soluble waste is disposed into the raw sewage canals which finally drains into the shallow, flat bottom fish ponds called Bheri. These sewage fed fisheries act simultaneously for the purification process like removal of heavy metals, coliform reduction as well as fish production at a commercial scale.

The accelerated growth of finfish aquaculture has resulted in a series of developments detrimental to the environment and human health. The latter is illustrated by the widespread and unrestricted use of prophylactic antibiotics in this industry, especially in developing countries, to forestall bacterial infections resulting from sanitary shortcomings in fish rearing.

Surveillance of bacterial susceptibility to five antimicrobial agents was performed during a 1-year period in and around four freshwater fish farms situated along a stream in western Denmark. Besides assessing the levels of antibiotic resistance among the culturable fraction of microorganisms in fish, water, and sediment samples, two major fish pathogens (88 Flavobacterium psychrophilum isolates and 134 Yersinia ruckeri isolates) and 313 motile Aeromonas isolates, representing a group of ubiquitous aquatic bacteria, were isolated from the same samples.

The results of a study on the fishery, biology, exploitation and mortality of hilsa shad (Hisa ilishu) are presented. The average annual landing of Hilsa ilisha for 1979 - 88 was 5710 tonnes forming 0.4% of the total landings. The major craft and gears and the contributions of different states are presented. Age at first maturity was estimated as 1.98 years. The details of spawning migrations, maturity stages and fecundity are discussed. The total mortality, natural mortality and fishing mortality coefficients were obtained as 1.71,0.704 and 0.9444 respectively.

पृथ्वी की संसाधन उत्पादन करने की जितनी क्षमता है उससे ज्यादा हम उसका दोहन कर रहे हैं। हम ये भूल जाते हैं कि हमारे पास सिर्फ और सिर्फ एक पृथ्वी है लेकिन अमेरिका जर्मनी जैसे देशों की उपभोग दर पर अगर पूरी दुनिया जीने लग जाए तो हमें 3 से पांच पृथ्वियों की जरूरत पड़ेगी। लेकिन हम इंसान इस तथ्य को पूरी तरह से नकार चुके हैं। आलम ये है कि आज हम पृथ्वी के एक साल के संसाधनों की उपभोग सिर्फ सात महीनों में ही कर जा रहे हैं। आज विशेष में जानेंगे अर्थ ओवरशूट डे के बारे में। जानेंगे इसका सिद्धांत, इसकी अहमियत, मौजूदा स्थिति और भविष्य के खतरों को।

Tue, 2015-08-25 (All day)
Wed, 2015-08-26 (All day)
Tue, 2015-02-24 (All day)