Taxonomy of shellfish

Teacher

Dr. Amrutha Gopan

Category

Core Courses

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Course Name : Taxonomy of shellfish

 

 

Code(Credit) : FSRM1102(1-1-0)

Course Objectives

To define what is taxonomy

To understand the importance of shellfish by studying two highly diversified phyla such as phylum Arthropoda and phylum Mollusca

To develop species identification skills

Learning Outcomes

To understand the important features of Phylum Arthopoda and phylum

Mollusca along with different subclasses

To understand the importance of Crustaceans and Molluscans in Indian fisheries

To identify the commercially important species of Crustacean and Mollusca.

Course Syllabus

Theory

Study of external morphology and meristic characteristics of crustacea and mollusca.

Classification of crustacea and mollusca up to the level of species with examples of

commercially important species.

Practicals

Study of external morphology. Collection, preservation and identification of

commercially important prawns, shrimps, crabs, lobsters, bivalves, gastropods, cephalopods

from natural habitats. Field visits for collection and study of commercially important

shellfishes.

Reference Books

1. Idendification of shell fishes -FAO
2. Prawn and prawn fisheries of India -Kurine and Sabestian
3. Identification of shell fishes and Molluscs -CMRI Special publication

Session Plan

Session 1

Introduction to shellfish taxonomy

Introduction Taxonomy

Taxonomy of shellfish

Session 2

Practical: To study the external morphology, morphometric and meristic measurements of prawn and shrimp

Morphology of shrimp

Session 3

Phyllum Arthropoda

Definition

Habits and habitat

Size and shape

Basic external features

Session 2 Arthropoda

Arthropod

Session 4

Practical: Dissection of a prawn or shrimp to study 5 pairs of cephalic appendages (Antennule,

Antenae, Mandible, maxilla and maxillulae), 8 pairs of thoracic (3 pairs of maxillepeds and 5 pairs of pereopods) and 6 pairs of abdominal (5 pairs of pleopod and uropod) appendages

Session 2 Arthropoda

Arthropod

Session 5

Class Crustacea

General characters

External morphology of a typical crustacea, Fresh water prawn (

Macrobrachium rosenbergi): Shape, size and coloration, Division of body

External aperatures, Structure of exoskeleton,

Appendages (Different parts and specialized function)

 

Session 3.Crustacea

Crustacea

Session 6

Practical:    Dissection of a prawn or shrimp to study 5 pairs of cephalic appendages (Antennule,

Antenae, Mandible, maxilla and maxillulae), 8 pairs of thoracic (3 pairs of maxillepeds and 5 pairs of pereopods) and 6 pairs of abdominal (5 pairs of pleopod and uropod) appendages

Session 3.Crustacea

Crustacea

Session 7

Classification of class crustacean

Subclass Cephalocarida: Characters with example

Sub class Branchiopoda: Characters, classification (Orders Anostraca,

Notostraca and Diplostraca) with examples

Sub class Ostracoda: Characters, classification ( Order Mydocopa,

Platycopa, Padocopa and Cladocopa) with examples

Sub class Mystacocarida: Characters with examples

Sub class Copepoda: Characters, classification (Order: Calanoida,

Harpecticoida, Cyclopoida, Monstrilloida, Calligoida and Learnepodoida)

with examples

Sub class Branchiura: Characters with examples

Session 4.Classification

Crustacea

Session 8

Practical: To study different crest, groove and spine present on the carapace of shrimp and prawn having taxonomic importance

Session 4.Classification

Crustacea

Session 9

Series Eumalacostraca

General characters

Classification (Super order Syncarida, Peracarida, Hoplocarida and

Eucarida) with example

Subclass Malacostraca

Super order Eucarida

Characters

Classification (Order Euphaisiacea and Decapoda)

Session 5 Eumalacostraca

Malacostraca

Session 10

Practical: Identification of Macrobrachium rosenbergii, Macrobrachium malcomsonii and

Nematopalaemon tennuips (fresh water prawns) with their characters

Session 5 Eumalacostraca

Malacostraca

Session 11

Order Decapoda

  • Characters

  • Classification ( Sub order: Natantia and Reptantia)

  • Sub order Natantia

  • Characters

  • Classification (Infra order Penaeidea, Caridea and Stenopodidea)

  • Sub order Reptantia

  • Characters

  • Classification (Section Macrura, Anomura and Brachyura)

  • Section Macrura

  • Section Brachyura

Session 6 Decapoda

Decapoda

Session 12

Practical: Identification of Penaeus monodon, Penaeus indicus, Penaeus semisulcatus and Littopenaeus vennemei with their characters

Session 6 Decapoda

Decapoda

Session 13

Phyllum Mollusca

Definition

General charecters

Classification of Mollusca

Class Aplacophora: Characters with example

Class Polyplacophora: Characters with example

Class Monoplacophora: Characters with example

Class Scaphopoda: Characters with example

Session 7 Mollusca

Mollusca

Session 14

Practical: Identification of Penaeus japonicas, Penaeus cannaliculatus, Penaeus merguensis and Penaeus penicilatus with their characters

Session 7 Mollusca

Mollusca

Session 15

Classification of Phylum Mollusca Continues…………

  • Class Gastropoda

  • General characters

  • External morphology of a typical gastropod shell

  • Meristic mesurements

  • Classification of Gastropoda (Sub class Prosobranchia, Opisthobranchia and

Pulmonata)

 

Session 8 Gastropoda

 

Gastropoda

Session 16

Class Pelecypoda

  • General characters
  • External morphology of a typical bivalve shell
  • Meristic mesurements
  • Classification of class Pelecypoda
  • Order Protobranchiata: Characters with example

 

Session 9 Class Pelecypoda

Pelecypoda

Session 17

Class Cephalopoda

General characters

External morphology of Loligo, Sepia and Octopus

Classification of Cephalopoda

Sub class Belemnoidea or Dibranchiata: Characters and classification (Order

Decapoda and Octapoda) with examples

Sub class Nautiloidea or Tetrabranchia: Characters with example

Sub class Ammonoidea: Characters with example

 

Session 10 Class Cephalopoda

Cephalopoda

Session 18

Practical: Identification of Metapenaeus monocerus, Metapenaeus affinis, Metapenaeus dobsoni and Metapenaeus brevicornis with charecters

Practicals: To study the external morphology and meristic measurements of a typical gastropod shell, bivalve shell and cephalopods

Session 8 Gastropoda

Gastropoda

Case Studies

Case Studies

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        Assistant Professor, PhD School of Fisheries Centurion University of Technology and Management (CUTM) Paralakhemundi- 761211 Odisha, INDIA Mobile: +91 6238 514615 Email: amrutha.gopan@cutm.ac.in ACADEMIC QUALIFICATIONS Ph.D. in Fish Nutrition and Feed Technology(2020) from Central Institute of Fisheries Education(CIFE-ICAR), Mumbai M.F.Sc.(Master of Fisheries Science) in Fish Nutrition and Feed Technology (2015) from Central Institute […]