Information

Bred crustacean species: Saltwater shrimp

Bred crustacean species: Saltwater shrimp

Classification

Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Family: Penaeidae
Genus: Penaeus spp.

prawn Penaeus kerathurus Forskäl - Shrimp Palaemon serratus Pen.

The Shrimp (Palaemon serratus) is a common species in the Mediterranean Sea and is found on rocky bottoms and rich in algae up to about 15 meters deep.Penaeus kerathurus Forskäl) is an indigenous Mediterranean species.

Japanese prawn (or imperial prawn) Penaeus japonicus Bate
(photo www.digitalarchives.tw)

In pigmentation the Penaeus japonicus (Japanese prawn) is similar to the native species of the Mediterranean (P. kerathurus). Among the Peneids, it is the most widely bred species in the Mediterranean area (Spain, Italy, France, Portugal, Greece, Albania, Turkey and Egypt). Thanks to the ability to survive for long times out of the water, provided that in controlled temperature and humidity conditions, it can be easily exported to markets far from the production area.

Giant tiger shrimp Penaeus monodon Fabricius (photo http://nautic-seafood.com)

The Penaeus monodon Fabricius is also commonly called giant tiger shrimp for the large size it reaches and for the vertical bands that run through the abdominal segments. This species dominates production in almost all Asian countries except Japan and China. The species, absent in nature in the Mediterranean, is native to the Indian Ocean and the southwestern Pacific Ocean, with extension from Japan to Australia, and represents, among the bred penises, the one that reaches the largest size (36 cm) and it has the highest growth rate. The Giant Tiger Shrimp has been experimented on a commercial scale in Italy (Northern Adriatic) with intensive and extensive breeding tests.

Morphological characteristics

The whole body is covered with an armor called carapace. The front part of the body, or cephalothorax, consists of the fusion of the head with the thorax and contains all the most important organs: the nervous system, gills, heart, stomach. It is characterized in turn by a toothed rostrum and a series of hulls, furrows and thorns that have taxonomic value. The antennas, mechanical receptors sensitive to vibrations and the antennas with olfactory function and balance with respect to gravity leave from the carapace.
The edible part of the animal is the abdomen, in turn divided into six segments. The front appendages called pereiopods are used when the animal is resting on the substrate and have an exploratory and prehensile function. The appendages below the abdomen called pleopods are instead used for swimming. The caudal part is made up of four segments called uropods which act as a rudder in swimming and oar in the typical backward flight. It ends with a sharp thorn, the telson.

Breeding and market

Currently Penaeus japonicus it is the most widely bred species in the Mediterranean area. Common throughout the Indo-Pacific sector, it entered the eastern Mediterranean through the Suez Canal and stabilized with large populations along the coasts of Egypt, Israel, Lebanon, Syria, and southern Turkey.
Also known by the name of imperial prawn or Japanese prawn, Penaeus japonicus is bred mainly in Japan, North Korea and Taiwan.
This species was introduced in Italy in 1981 by the CNR of Lesina which developed its breeding and breeding technology in the lagoons in Italy (Lumare, 1981) and subsequently in basins on land (Lumare, 1988).
The growth rate of this species, much more interesting than the autochthonous one (20g in 3 months of breeding against the 14 months necessary for P. kerathurus), and the marked ability to adapt to the lagoon environment have allowed this shrimp to establish itself on the national territory . Furthermore, the chromatic characteristics similar to those of the local species make the species highly appreciated on the national market.
Resistance to low temperatures (5 ° C) and to stress allows adult specimens of this species to survive the winter cold and various fishing stresses, allowing them to reach the merchant's desk alive.

Bibliographic sources:
www.apulashrimp.it - ​​Apula Shrimp srl

Card edited by Lapo Nannucci


Video: Breeding and Raising Peppermint Shrimp (January 2022).