A Study on Diseases Affecting Litopenaeus vannamei Farming in Coastal Districts of Andhra Pradesh, India

Abstract

Andhra Pradesh stands top in the aquaculture production in India and shrimp farming is one of the major sources of income. Now-a-days shrimp culture is facing many problems among them disease mitigation became major hurdle for the shrimp farmers. A study was done to evaluate the diseases affecting L.vannamei farming in coastal districts of Andhrapradesh, i.e., Gutur, Krishna, West Godavari and East Godavari. The summer crop was considered for the study during February -June 2019. The diseases that are responsible for huge losses in L. vannamei culture was found to be White Spot Syndrome Virus (WSSV), White Faecal Syndrome (WFS), Black Gill Disease (BGD), Loose Shell Syndrome (LSS), Running Mortality Syndrome (RMS), and Enterocytozoon Hepatopenaei (EHP) of all the selected 4 districts of the Andhra Pradesh. About 65% culture ponds of Guntur district, 69% in Krishna and 40% in West Godavari and 50% in East Godavari districts were affected by diseases. It was observed that, more disease related problems observed during the summer crop in all selected areas. The farms which implemented biosecurity measures, and maintained without any Dissolved Oxygen (DO) problems, were found to contain less diseases. Therefore it is suggested that by practicing better management practices (BMP) by following biosecurity measures, diseases can be prevented.

PENGARUH PENAMBAHAN EKSTRAK DAUN MANGROVE Avicennia marina PADA PAKAN TERHADAP LAJU PERTUMBUHAN DAN TINGKAT PEMANFAATAN PAKAN IKAN NILA SALIN (Oreochromis niloticus)

“…Kebanyakan ikan beradaptasi normal pada pH antara 5-9. Selain itu, pH merupakan parameter lingkungan yang vital dalam proses fisik (Venkateswarlu et al, 2019). Perubahan pH yang berlebihan dan berkelanjutan dapat menyebabkan ikan tumbuh lambat atau bahkan mati.…”

Physicochemical characteristics of shrimp ponds on mangrove ecosystems in Kannur District of Kerala, India

“…The pH of the water sample collected from the shrimp pond is more alkaline than that of the mangrove due to the application of Lime to the shrimp pond with an objective of better production and phytoplankton bloom activity (Venkateswarlu 2019). In the present study, the DO was found to be higher in mangroves than in traditional shrimp ponds because the concentration of DO in water depends on the rate of transfer from the atmosphere (stagnant or owing water), water temperature, salinity, biological (respiration and photosynthesis), and microbiological activity.…”

An Analysis of Shrimp Culture Business in Nellore District, Andhra Pradesh, India

“…Venkateswarlu and Chenji [5] reported that culture ponds of 40 percent in West Godavari, 50 percent in East Godavari, 65 percent in Guntur, 70 percent in Nellore, 69 percent in Krishna were disease affected. More disease-related difficulties were noted throughout the summer crop in all sites.…”