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ISSN: 2155-9910
Journal of Marine Science: Research & Development
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A Study on the Zoogeography of Indian Penaeidae

Angsuman Chanda*

Post Graduate Department of Zoology, Raja NL Khan Women’s College, Gope Palace, Midnapur, Paschim Medinipur-721 102, WB, India

*Corresponding Author:
Angsuman Chanda
Post Graduate Department of Zoology
Raja N. L. Khan Women’s College
Gope Palace, Midnapur, Paschim Medinipur-721 102
W.B, India
Tel: 9932675019
E-mail: angsumanchanda@yahoo.in

Received date: October 21, 2016; Accepted date: December 06, 2016; Published date: December 12, 2016

Citation: Chanda A (2016) A Study on the Zoogeography of Indian Penaeidae. J Marine Sci Res Dev 6:217. doi: 10.4172/2155-9910.1000217

Copyright: © 2016 Chanda A. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

From the distributional point of view of Penaeid prawn, Indian region in the present study is divided into three main sub-regions viz., East Coast, West Coast including Laccadive-Minicoy Islands and Andaman Islands. Present study also records existence of 79 species in the coastal of India. Out of 79 species 9 are endemic, 24 are common in east coast, west coast and Andaman Islands; 16 species are restricted to East coast, 13 are restricted to west coast, 2 are restricted to Laccadiv Islands, 3 species are restricted to Andaman Islands only. Global Analysis shows that most species are distributed within Indo-West Pacific region and only 6 species are distributed up to east Atlantic region. A statistical analysis based on the distribution of prawn shows more moderate similarity between east coast and west coast in India and strong similarity between sub-region 1 and 4 of Indo-West Pacific indicates that the Indian species are more common with Indonesian and Indo-Malaysian than East African species.

Keywords

Distribution; Penaeid prawn; Indian region; Global

Introduction

Shrimps and Prawns of various kinds have certainly been a source of protein for human consumptions from very early times. Within historical times reference is made to prawn in ancient Chinese and Japanese literature. Usage of the term ‘Prawn’ and ‘Shrimp’ are somewhat confusing. In some western literature the term ‘Shrimp’ is applied for Penaeoidea and Sergestoidea, but in the east these are called ‘Prawn’. Holthuis [1] discussed the contradiction but did not arrive at any conclusion. In the Prawn Symposium of the Indo-Pacific Council held at Tokyo in 1955 it was decided that the word ‘Prawn’ should be applied to the Penaeids, Pandalids and Palemonids while ‘Shrimp’ to the smaller species belonging to the other families [2]. As such in the present study the term ‘Prawn’ is used for all the species belonging to family Penaeidae. Among a variety of edible decapod crustaceans, prawns contribute largely to the fishery wealth of many nations. Exploitation of prawn resource from the seas around each country is playing increasingly significant role in furthering their national economy. In recent years, in spite of some ecological hazards, the demand for prawns and prawn products has increased so much that every country is making efforts to utilize hitherto unknown but usable stocks and expansion of prawn fisheries and industries near coast line is rightly being given the maximum encouragement in the development programme of each nation. Therefore, the distribution of different species gradually extending their range of distribution and newer species were recorded throughout coastal region of each nation.

According to distribution of penaeid prawns, Indian region has been divided into three main sub-regions viz., Eat coast, West coast including Laccadive-Minicoy Islands and Andaman Islands (Table 1). The sub-region wise distribution of penaeid prawn has been shown in Table 2. Sorensen’s quotient of similarity has been included in Table 3. Shallow and warm water marine areas of the world were classified into four zoogeographic regions namely Indo-West Pacific, Eastern Pacific, Western Atlantic and Eastern Atlantic regions [3]. Each region is further divided into several sub-regions. Since penaeid prawns are mostly distributed in these regions and sub-regions Dall et al., [3] have designated those as penaeid zoogeographical regions and sub-regions.

Sl.
No.
Indian Subregions Total No. of species Endemic species
1. East Coast: West Bengal, Orissa, Andhra Pradesh, Tamil Nadu 58 3
2. West coast including Laccadive Islands: Gujarat, Maharastra, Goa, Karnataka, Kerala 55 4
3. Andaman Islands. 34 2

Table 1: Penaeid species including endemic species found in various Zoogeographical subregions of India.

Sl.
No.
Name of genera, species & subspecies East coast (EC) West coast including Laccadive (WC) Andaman Islands (AI) Endemic
  AlcockpenaeopsisChanda, 2016        
1 Alcockpenaeopsisuncta (Alcock, 1905) + + - -
  AtypopenaeusAlock, 1905        
2 A. compressipes(Henderson, 1893) + + - -
3 A. stenodactylus(Stimpson, 1860) - + - -
  BatepenaeopsisChanda, 2016       -
4 B. acclivirostris(Alcock, 1905) + + - -
5 B. tenella (Bate, 1888) + - - -
  FunchaliaJohnson, 1867        
6 F.danaeBurkenroad, 1940 - + - -
7 F. villosa (Bouvier, 1905 b) - + + -
8 F. woodwardi Johnson, 1867 - + + -
  HelleropenaeopsisChanda, 2016        
9 H.cultirostris (Alcock, 1906) + - - -
10 H. hardwickiiMiers,1878) + + - -
11 H. indica (Muthu, 1972) + - - -
12 H. sculptilis (Heller, 1862) + + + -
  Kishinouyepenaeopsis Chanda,2016        
13 K.cornuta (Kishinouye, 1900) + + + -
14 K.maxillipedo (Alcock, 1906) + + - -
  Megokris Pérez Farfante and Kensley, 1997        
15 M. granulasus(Haswell, 1879) + - - -
16 M. pescadoreensis (Schmitt, 1931a) + + - -
17 M. sedili(Hall, 1961) + + - -
  MetapenaeopsisBouvier, 1905        
18 M. andamanensis(Wood-Mason, 1891) - + + -
19 M. barbata(De Haan, 1844) + - - -
20 M. commensalisBorradaile, 1898 - + - -
21 M. coniger(Wood-Mason, 1891) + + + -
22 M.ceylonicaStarobogatov, 1972 + - - -
23 M.gaillardiCrosnier, 1991 + + - -
24 M. gallensis(Pearson, 1905) + - - -
25 M. hilarula(De Man, 1911) + + - -
26 M. mogiensis(Rothbun, 1902) + + + -
27 M. novaeguineae(Haswell, 1879) + - - -
28 M. palmensis(Haswell, 1879) + - - -
29 M. philippii(Bate, 1881) - + - -
30 M. stridulans(Alcock, 1905) + + + -
31 M. toloensisHall, 1962 + - + -
  Metapenseus Wood-Mason, 1891        
32 M. affinis(H. Milne Edwards, 1837) + + + -
33 M. alcockiGeorge and Rao, 1968 - + - +
34 M. brevicornis(H. Milne Edwards, 1837) + + + -
35 M. bengalyensisTirmizi, 1971 + - - +
36 M. dobsoni(Miers, 1878) + + + -
37 M. eboracensisDall, 1957 + - - -
38 M. elegansDe Man, 1907 + - + -
39 M. endeavouri (Schmitt, 1926a) + - - -
40 M. ensis(De Haan, 1844) + + + -
41 M. intermedius(Kishinouye, 1900) - - + -
42 M. krishnatrii (Silas and Muthu, 1976) - - + +
43 M. kutchensisGeorge, George and Rao, 1963 - + - +
44 M. lysianassa(De Man, 1888) + + + -
45 M. monoceros(Fabricius, 1798) + + + -
46 M. moyebi(Kishinouye, 1896) + + + -
47 M. stebbingiNobili, 1904 - + - -
  Miyadiella Kubo, 1949        
48 M. podophthalmus(Stimpson, 1860) - + - -
  ParapenaeopsisAlcock 1901        
49 P. longirostrisChanda and Bhattacharya,2002. + - - +
50 P. nana Alcock, 1905 + - - -
51 P. styliferacochinensisGeorge, 1975 - + - -
52

P. styliferacoromandelicaAlcock, 1906

+ + - -
53 P. styliferastylifera(H. Milne Edwards, 1837) + + + -
  Perapenaeus Smith, 1885        
54 P.fissuroidesindicusCrosnier, 1985 - + - -
55. P. fissurus(Bate, 1881) + - + -
56 P. investigatorisAlcock and Anderson, 1899 + + + -
57 P. longipesAlcock, 1905 + + - -
58 P. sextuberculatusKubo, 1949 - + - -
  Pelagopenaeus Perez Farfante&Kensley, 1997        
59 P.balboae (Faxon, 1893) - + - -
  Penaeopsis Bate, 1881        
60 P. edwardoiPerez Farfante, 1977 + - - -
61 P. jerryiPerez Farfante, 1979 + + + -
62 P. rectacuta(Bate, 1881) + + + -
                PenaeusFabricius, 1798        
63. P. canaliculatus(Oliver, 1811) + + + -
64. P.hathorBurkenroad, 1959 - + - -
65. P. indicus(H. Milne Edwards, 1837) + + + -
66. P. japonicus(Bate, 1888) + + + -
67. P. konkani(Chanda and Bhattacharya,2003) - + - +
68. P. latisulcatus(Kishinouye, 1896) + + + -
69. P. marginatus(Randall, 1840) + + - -
70. P. merguiensis(De Man, 1888) + + + -
71. P. monodonFabricius, 1798 + + + -
72. P. penicillatus(Alcock, 1905) + + - -
73. P. semisulcatusDe Haan, 1844 + + + -
74. P. silasiMuthu&Motho, 1979 + - - +
75. P. similis.(Chanda and Bhattacharya,2000.) - - + +
  TrachypenaeopsisBurkenroad, 1934        
76. T. minicoyensisThomas, 1972 - + - +
  TrachysalambriaBurkenroad, 1934        
77. T. aspera(Alcock, 1906) + - + -
78. T. curvirostris(Stimpson, 1860) + + + -
79. T.fulva (Dall, 1957) + - - -
  TOTAL 58 55 34 9

Table 2: Distribution of penaeid prawns in Indian subregion.

Region Q/S Value Ramarks
EC vs WC 0.673 Moderately similar.
EC vs AI 0.608 Moderately similar.
WC vs AI 0.606 Moderately similar.

Table 3: Sorensen’s quotient of similarity based on the distribution of penaeid fauna in India.

Materials and Methods

The present study is mainly based on the specimens collected by the author from different commercial fish landing centres throughout Indian coast line (Figure 1). In addition to this penaeid prawns preserved in the National Collection of the Survey of India, Kolkata, India; Central Marine Fishery Research Institute, Cochin, Kerala and its regional stations at Mandapam, Tamil Nadu and National Institute of Oceanography have also been studied.

marine-science-research-development-Study-area

Figure 1: Study area and collection spots along Indian Coast.

The collected materials were preserved in rectified spirit (90%) and body parts of taxonomic importance have been dissected and studied under a stereoscopic binocular microscope and identified. All the materials were registered and preserved in the national collection of Zoological Survey of India, Kolkata.

Results

Indian distribution

The present study records existence of 79 species of penaeid prawn in the coastal water of India. A look into the Table 2 reveals that East coast has 58 species, West coast 55 and Andaman Island has 34 species. Out of the 79 species recorded in this dissertation 24 species namely Penaeus indicus H. Milne Edwards, 1837, P. merguiensis De Man, 1888, P. monodon Fabricin 1798, P. semisulcatus De Haan, 1844 P. japonicus Bate, 1888, P. canaliculatus Olivier, 1811, P. latisulcatus; Metapenaeopsis coniger, M. mogiensis, M. stridulaus [4] Metapenaeus affinis, M. brevicornis, M. dobsoni, M. ensis, M. lysianassa , M. monoceros, M. moyebi, Helleropenaeopsis sculptilis, Kishinouyepenaeopsis cornuta, Parapenaeopsis stylifera, Parapenaeus investigatoris Alcock and Anderson [4], Panaeopsis jerryi Pérez Farfante, P. rectacuta and Trachysalambria curvirostris are found both in East coast, West Coast and Andaman Islands. 10 species namely Atypopenaeus compressipes, Penaeus penicillatus [4], P. marginatus, Megokris sedili, Metapenaeopsis hilarula, Batepenaeopsis acclivirostris [4], Alcockpenaeopsis unclta [4], Helleropenaeopsis hardwickii, Kishinouyepenaeopsis maxillipedo Alcock [4] and Parapenaeus longipes Alcock [4] are found in East and West coast but not in Andaman Islands. 4 species namely Metapenaeopsis toloensis, Metapenaeus elegans De Man, 1907, Parapenaeus fissurus and Trachysalambria aspera [4] are common in East coast and Andaman Islands. 2 species namely Funchalia woodwardi Johnson, 1867 and Metapenaeopsis andamanensis are common in West coast and Andaman Islands. 12 species namely Megokris granulosus, Metapenaeopsis barbata, M. gallensis, M. novaeguineae, M. palmensis, Metapenaus bengalensis Tirmizi, M. eboracensis Dall [3], Batepenaeopsis tenella (Bate, 1888), Helleropenaeopsis cultirostris Alcock [4], Parapenaeopsis longirostris Chanda and Bhattacharya, 2004; P. nana Alcock [4] and Penaeopsis eduardoi Pérez Farfante, 1977 are restricted to East coast only. 10 species namely Atypopenaeus stenodactylus, Penaeus Konkani [5], Metapenaeopsis commensalis Borradaile, 1898, M. Philippii, Metapenaeus alcocki, M. kutchensis George, George and Rao, M. stebbingi Nobili, 1904, Miyadiella podophthalmus, Parapenaeus sextuberculatus, and Trachypenaeopsis minicoyensis Thomas, 1972 are restricted to wast coast of which M. commensalis Borradaile, 1898 and T. minicoyensis Thomas, 1972 are restricted to Laccadive Islands. 3 species namely Penaeus similis [5]. Metapenaeus intermedius and M. krishnatrii Sisal and Muthu, 1976 are restricted to Andaman Island only. Two species have been recorded for the first time by Chanda [6] from India namely Metapenaeopsis palmensis and Metapenaeus eboracensis Dall, 1957, both from Andhra Pradesh in the east coast of India.

The present study also extends the limits of distributions of several earlier recorded species. Some of the species like Metapenaeopsis toloensis Hall, 1962 and Metapenaeus elegans De Man, 1907 which were previously recorded only from Andaman Sea have now been recorded from the eastern coast of mainland, India. In contrast to this Penaeus indicus H. Milne Edwards, 1837 which was earlier reported from east and west coast of main land, India [7] has now been recorded from Andaman Sea.

Penaeus latisulcatus Kishninouye, 1896 which was previously recorded only from west coast has now been recorded from east coast also. Likewise Metapenaeus lysanassa and Penaeopsis acclivirostris [4] was previously recorded only from east coast have now been recorded from west coast also.

In case of some species the limits of distributions have been extended either in east or west coast. For example northern limit of distribution in west coast has been extended upto Gujarat for Atypopenaeus stenoductylus, Metapenaeopsis stridulans [4], Metapenaeus ensis and Helleropenaeopsis hardwickii. Similarly northern limit of the distribution in east coast has been extended for Metapenaeus ensis and Parapenaeopsis stylifera up to Ganjatic delta and West Bengal and up to Andhra Pradesh for Kishinouyepenaeopsis cornuta. Present study also suggest that Penaeus penicillatus [4] has a broad range of distribution in both east and west coast and not restricted to Maharastra and Orissa coast as thought earlier by George [8].

Of these reported 79 species ,9 species are endemic to India and 4 of these are restricted to West coast including 2 in Laccadive Island, 2 are restricted to each coast and remaining 3 are restricted to Andaman Islands. Analysis of the Sorensen’s quotient of similarity based on the distribution in three sub-regions of India revealed that penaeid fauna is moderately similar (0.61-0.70) among different sub-regions. As expected similarity maximum between East and West coast (0.673) due to continuity of coast line and least between West coast and Andaman Island (0.606) due to distance.

Global distribution

Some penaeid prawns found in India (Indo-West Pacific region) are also distributed in Eastern Atlantic zoogeographic region but no species of this region is found in Eastern Pacific and Western Atlantic. The region and sub-regions wise distribution of Indian penaeids have been computed and shown in Tables 4 and 5. Of the 79 species reported here only 6 species are common with Eastern Atlantic region where they are found in the sub-region 2 (Mediterranean Sea) only. Most of the Indo-West Pacific Indian species are found in sub-region 1and4 (69 and 61 respectively). Some of the species are distributed as far as subregions 7, 8 and 9 [8-12].

  Global penaeid zoogeographical area Total No. of species Endemic species
I. Indo – West Pacific    
  Indian Ocean and Western part of Pacific Ocean are under the area 79 9
  Sub-regions:    
  1. Indo-Malaysian, Sri Lanka, Bay of Bengal, Philippines, Gulf of Tonkin, South Taiwan, Indonesia including northern West Irian, Northern Papua, New Guinea, Solomon Islands 69 4
  2. Tropical Australia – Torres Strait to Shark Bay. Gulf of Papua, wide Bay, Queensland. 28  
  3. Sino-Japanese, Gulf of Tonkin to Yellow Sea and the Inland Sea of Japan 28  
  4. Arabian Sea, West Coast of India through Arabian Sea, Gulf of Iran and Red Sea 61 5
  5. East African Coast, Cape Guardafui to Durban 21  
  6. South Africa, Durban to Swakopmunad 11  
  7. Southeastern Australia. Wide Bay to Bass strait 4  
  8. South Western Australia. Shark Bay of Vincents Gulf 5  
  9. Oceania. South and Central Pacific islands, including the Hawaiian Islands 12  
II. Eastern Atlantic    
  Eastern part of Atlantic Ocean starting from Mediterranean Sea to South Angola    
  Sub-regions:    
  1. Eastern Atlantic, Lisbon, Portugal, 400N, to Porto Alexandre, South Angola, 160S. 0  
  2. Mediterranean Sea 6  

Table 4: Distribution of Indian penaeids including endemic species in global sub-regions.

Sl. No Name of Genera & Species Indo-West Pacific Eastern Atlantic
1 2 3 4 5 6 7 8 9 1 2
  AlcockpenaeopsisChanda, 2016                      
1. Alcockpenaeopsisuncta (Alcock, 1905) + - - + - - - - - - -
  AtypopenaeusAlcock, 1905                      
2. A. compressipes(Henderson, 1893) + + - + - - - - - - -
3. A. stenodactylus(Stimpson, 1860) + + + + - - - - - - -
  BatepenaeopsisChanda, 2016                      
4. B. acclivirostris(Alcock, 1905) + - - + + + - - - - -
5. B. tenella (Bate, 1888) + + + + - - - - - - -
  Funchalia Johnson, 1867                      
6. F.danaeBurkenroad, 1940 - - - + - - - - - - -
7. F. villosa (Bouvier, 1905 b) + - - + - - - - - - -
8. F. Woodwardi Johnson, 1867 + - - + + - - - - - +
  HelleropenaeopsisChanda, 2016                      
9. H.cultirostris (Alcock, 1906) + - - - - - - - - - -
10. H. hardwickiiMiers,1878) + - + + - - - - - - -
11. H. indica (Muthu, 1972) + - - - - - - - - - -
12. H. sculptilis (Heller, 1862) + + - + - - - - - - -
  Kishinouyepenaeopsis Chanda,2016                      
13. K.cornuta (Kishinouye, 1900) + + + + - - - - - - -
14. K.maxillipedo (Alcock, 1906) + + - + - - - - - - -
  Megokris Pérez Farfante and Kensley, 1997                      
15. M. granulasus(Haswell, 1879) + + - + - - - - - - -
16. M. pescadoreensis (Schmitt, 1931a) + - - + - - - - - - -
17. M. sedili(Hall, 1961) + - - + + - - - - - -
  MetapenaeopsisBouvier, 1905                      
18. M. andamanensis(Wood-Mason, 1891) + - + + - - - - - - -
19. M. barbata(De Haan, 1844) + - + + - - - - - - -
20. M. commensalisBorradaile, 1898 + + - + - - - - + - -
21. M. coniger(Wood-Mason, 1891) + - + + - - - - - - -
22. M.ceylonicaStarobogatov, 1972 + - - - - - - - - - -
23. M. gaillardiCrosnier, 1991 + - - + - - - - - - -
24. M. gallensis(Pearson, 1905) + + + + - - - - - - -
25. M. hilarula(De Man, 1911) + + - + + + - - - - -
26. M. mogiensis(Rothbun, 1902) + - + + + - - - - - -
27. M. novaeguineae(Haswell, 1879) + + - - - - - - - - -
28. M. palmensis(Haswell, 1879) + + + - - - - + - - -
29. M. philippii(Bate, 1881) + - - + - - - - - - -
30. M. stridulans(Alcock, 1905) + - - + - - - - - - -
31. M. toloensisHall, 1962 + + - + - - - - - - -
  Metapenseus Wood-Mason, 1891                      
32. M. affinis(H. Milne Edwards, 1837) + - - + - - - - + - -
33. M. alcockiGeorge and Rao, 1968 - - - + - - - - - - -
34. M. brevicornis(H. Milne Edwards, 1837) + - - + - - - - - - -
35. M. bengalyensisTirmizi, 1971 + - - - - - - - - - -
36. M. dobsoni(Miers, 1878) + - - + - - - - - - -
37. M. eboracensisDall, 1957 + + - - - - - - - - -
38. M. elegansDe Man, 1907 + - - - - - - - + - -
39 M. endeavouri (Schmitt, 1926a) + + - - - - - - - - -
40. M. ensis(De Haan, 1844) + + + + - - - - + - -
41. M. intermedius(Kishinouye, 1900) + - + - - - - - - - -
42. M. krishnatrii (Silas and Muthu, 1976) + - - - - - - - - - -
43. M. kutchensisGeorge, George and Rao, 1963 - - - + - - - - - - -
44. M. lysianassa(De Man, 1888) + - - + - - - - - - -
45. M. monoceros(Fabricius, 1798) + -   + + + - - - - +
46. M. moyebi(Kishinouye, 1896) + - + + - - - - - - -
47. M. stebbingiNobili, 1904 - - - + + + - - - - +
  Miyadiella Kubo, 1949                      
48. M. podophthalmus(Stimpson, 1860) + - + + - - - - - - -
  ParapenaeopsisAlcock 1901.                      
49.              P. longirostrisChanda and Bhattacharya,2002. + - - - - - - - - - -
50. P. nana Alcock, 1905 + - - - - - - - - - -
51. P. styliferacochinensisGeorge, 1975 - - - + - - - - - - -
52.

P. styliferacoromandelicaAlcock, 1906

+ - - + - - - - - - -
53. P. styliferastylifera(H. Milne Edwards, 1837) + - - + - - - - - - -
  Perapenaeus Smith, 1885                      
54. P. fissurus(Bate, 1881) + - + + + - - - - - -
55. P.fissuroidesindicusCrosnier, 1985 - - - +              
56. P. investigatorisAlcock and Anderson, 1899 + - + + + - - - - - -
57. P. longipesAlcock, 1905 + - + + + - - - - - -
58. P. sextuberculatusKubo, 1949 + + + + + - + - - - -
  Pelagopenaeus Perez Farfante&Kensley, 1997                      
59. P.balboae (Faxon, 1893) - - - + - - - - - - -
  Penaeopsis Bate, 1881                      
60. P. edwardoiPerez Farfante, 1977 + + + - + - - - + - -
61. P. jerryiPérez Farfante, 1979 + - - + + - - - - - -
62. P. rectacuta(Bate, 1881) + - + + + - - - + - -
  PenaeusFabricius, 1798                      
63. P. canaliculatus(Oliver, 1811) + + + + - - - - + - -
64. P.hathorBurkenroad, 1959 - - - + - - - - - - -
65. P. indicus(H. Milne Edwards, 1837) + + + + + + - - - - -
66. P. japonicus(Bate, 1888) + + + + + + - - - - +
67. P. konkani(Chanda and Bhattacharya,2003) - - - + - - - - - - -
68. P. latisulcatus(Kishinouye, 1896) + + + + + + - + + - -
69. P. marginatus(Randall, 1840) + + + + + + - - + - -
70. P. merguiensis(De Man, 1888) + + - + - - - - + - -
71. P. monodonFabricius, 1798 + + + + + + + + + - -
72. P. penicillatus(Alcock, 1905) + - - + - - - - - - -
73. P. semisulcatusDe Haan, 1844 + + + + + + + + +   +
74. P. silasiMuthu&Motho, 1979 + - - - - - - - - - -
75. P. similis.(Chanda and Bhattacharya,2002). + - - - - - - - - - -
  TrachypenaeopsisBurkenroad, 1934                      
76. T. minicoyensisThomas, 1972 - - - + - - - - - - -
  TrachysalambriaBurkenroad, 1934                      
77. T. aspera(Alcock, 1906) + - - - - - - - - - -
78. T. curvirostris(Stimpson, 1860) + + + + + + + + - - +
79. T.fulva (Dall, 1957) + + - - - - - - - - -
  TOTAL NUMBER OF SPECIES 69 28 28 61 21 11 4 5 12 0 6

Table 5: Zoogeographic distribution of penaeid species found in India.

Analysis of the Sorensen’s quotient of similarity based on the distribution of species in different sub-regions of the Indo-West Pacific region (Table 6) revealed that as expected, penaeid species composition is strongly similar (>0.71) between sub-region 1 and 4. Slightly similar (0.51-0.60) species composition is seen between sub-region 1 and 2, 1 and 3 and 3 and 4. Species composition between sub-region 1 and 5, 2 and 4 and 4 and 5 are found to be moderately dissimilar. Species composition between sub-region 1 and 6, 1 and 7, 1 and 8, 1and 9 and between remaining other sub-regions it is found to be strongly dissimilar as compare to sub-region 4.

*Subregion 1 4
1    
4 .785  
3 .577 .584
2 .577 .517
5 .444 .488
9 .296 .329
6 .275 .306
8 .135 .121
7 .110 .123

Table 6: Sorensen’s quotient of similarity (Q.S).

Such pattern of distribution is quite expected and can be correlated with the distance. Coastal continuity between East and West coast of India is the cause of the moderate to strongly (·673 ≈ ·7) similar species composition. Relative proximity between the East African coast and the West Coast of India has resulted into the slightly similar species composition between these two sub-regions but a moderately dissimilar species composition has been observed between East coast of India and East African coast. As such distributional tendency of Indian penaeids towards east is more than west. Only 6 species of India has been found to be distributed outside Indo-West Pacific region and that too only found in Mediterranean sea. Such distribution in all probability is a recent phenomenon and might have arisen due to the dispersal of species through Suez canals which is also suggested by Dall [3].

Acknowledgements

Author is extremely indebted to Professor Tanmoy Bhattacharya, Ex-Emeritus Professor, Department of Zoology, Vidyasagar University; Dr. Probodh Kumar Maity, Emeritus scientist-SF, ZSI, Kolkata and Dr. Tusherendu Roy, Scientist-C, ZSI, Kolkata for their endless guidance and inspiration. Author expressed his gratitude to Prof. Samir Kumar Benerjee, Prof. of Zoology, Calcutta University for his inspiration during preparation of manuscript in present format. Author is also grateful to the Director, Zoological Survey of India for granting him a fellowship during which the work has been completed.

References

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