Studies on the crustacean nervous system have been responsible for advances in neuroscience and continue to play an important role in comparative neurobiology. The organization of crustacean brains provides clues about their phylogeny and might also offer some hints regarding their lifestyles. In this study, we compared the organization of specific brain regions of three species of marine shrimp with two species of freshwater prawns, making possible the identification of a pathway issuing from the periphery and cluster 9, which was not previously identified in freshwater prawns and shrimp. Although the brains of the species studied show the same general organization of other crustaceans, variations in the structural organization of the olfactory lobe, evidenced by different immuno-markers, were observed between shrimp species and prawns. In contrast to shrimp, the more well-defined organization of the olfactory lobe in freshwater prawns might reflect greater integration in the processing of olfactory information. Also, in freshwater prawns we described fibers organized as a tract similar to the deutocerebral commissure.

1.
Beltz BS, Kordas K, Lee MM, Long JB, Benton JL, Sandeman DC (2003) Ecological, evolutionary, and functional correlates of sensilla number and glomerular density in the olfactory system of decapod crustaceans. J Comp Neurol 455:260–269.
2.
Beltz BS, Sandeman DC (2003) Regulation of life-long neurogenesis in the decapod crustacean brain. Arthropod Struct Dev 32:39–60.
3.
Benton JL, Sandeman DC, Beltz BS (2007) Nitric oxide in the crustacean brain: regulation of neurogenesis and morphogenesis in the developing olfactory pathway. Dev Dyn 236:3047–3060.
4.
Corrêa CL, Silva SF, Lowe J, Tortelote GG, Einicker-Lamas M, Martinez AMB, Allodi S (2004) Identification of a neurofilament-like protein in the protocerebral tract of the crab Ucides cordatus. Cell Tissue Res 318:609–615.
5.
Derby CD, Fortier JK, Harrison PJH, Cate HS (2003) The peripheral and central antennular pathway of the Caribbean stomatopod crustacean Neogonodactylus oerstedii. Arthropod Struct Dev 32:175–188.
6.
Fraser PJ, Takahata M (2002) Statocysts and statocyst control of motor pathways in crayfish and crabs. In: Crustacean Experimental Systems in Neurobiology (Wiese K, ed), pp 89–108. Berlin: Springer.
7.
Hanström B (1925) The olfactory centers in crustaceans. J Comp Neurol 38:221–250.
8.
Hanström B (1931) Neue Untersuchungen über Sinnesorgane und Nervensystem der Crustaceen. Z Morph Ökol Tiere 23:80–236.
9.
Hanström B (1947) The brain, sense organs, and the incretory organs of the head in the Crustacea Malacostraca. Acta Univ 58:1–44.
10.
Harzsch S, Müller CHG (2007) A new look at the ventral nerve centre of Sagitta: implications for the phylogenetic position of Chaetognatha (arrow worms) and the evolution of the bilaterian nervous system. Front Zool 4:14.
11.
Harzsch S, Waloszek D (2000) Serotonin-immunoreactive neurons in the ventral nerve cord of Crustacea: a character to study aspects of arthropod phylogeny. Arthropod Struct Dev 29:307–322.
12.
Johnson ME, Atema J (2005) The olfactory pathway for individual recognition in the American lobster Homarus americanus. J Exp Biol 208:2865–2872.
13.
Minelli A, Peruffo B (1991) Developmental pathways, homology and homonomy in metameric animals. J Evol Biol 3:429–445.
14.
Osorio D, Bacon JP, Whitington PM (1997) The evolution of arthropod nervous systems. Am Sci 85:244–253.
15.
Paul DH (1989) A neurophylogenist’s view of Decapoda. Bull Mar Sci 45:487–504.
16.
Paul DH, Faulkes Z, Antonsen BL (2002) Synergies between disparate motor systems: loci for behavioral evolution. In: Crustacean Experimental Systems in Neurobiology (Wiese K, ed), pp 263–282. Berlin: Springer.
17.
Richter S, Scholtz G (2001) Phylogenetic analysis of the Malacostraca (Crustacea). J Zool Syst Evol Res 39:113–136.
18.
Sandeman D, Sandeman R, Derby C, Schmidt TM (1992) Morphology of the brain of crayfish, crabs, and spiny lobsters: A common nomenclature for homologous structures. Biol Bull 183:304–326.
19.
Sandeman DC, Scholtz G (1995) Ground plans, evolutionary changes and homologies in Decapod crustacean brains. In: The Nervous Systems of Invertebrates: An Evolutionary and Comparative Approach (Breidbach O, Kutsh W, eds), pp 330–347. Basel: Birkhäuser.
20.
Schachtner J, Schmidt M, Homberga U (2005) Organization and evolutionary trends of primary olfactory brain centers in Tetraconata (Crustacea, Hexapoda). Arthropod Struct Dev 34:257–299.
21.
Schmidt M (1995) The homology concept – still alive. In: The Nervous Systems of Invertebrates: An Evolutionary and Comparative Approach (Breidbach O, Kutsh W, eds), pp 425–437. Basel: Birkhäuser.
22.
Schmidt M (1997) Distribution of centrifugal neurons targeting the soma clusters of the olfactory midbrain among Decapod crustaceans. Brain Res 752:15–25.
23.
Schram FR (2001) Phylogeny of decapods: moving towards a consensus. Hydrobiologia 449:1–20.
24.
Schram FR, Dixon CJ (2004) Decapod phylogeny: addition of fossil evidence to a robust morphological cladistic data set. Bull Mizunami Fossil Museum 31:1–19.
25.
Sullivan JM, Beltz BS (2004) Evolutionary changes in the olfactory projection neuron pathways of eumalacostracan crustaceans. J Comp Neurol 470:25–38.
26.
Tsvileneva VA, Titova VA (1985) On the brain structures of decapods. Zool Jahrb Anat 113:217–266.
27.
Vilpoux K, Sandeman R, Harzsch S (2006) Early embryonic development of the central nervous system in the Australian crayfish and the Marbled crayfish (Marmorkrebs). Dev Gen Evol 216:209–223.
28.
Wachowiak M, Diebel CE, Ache BW (1997) Local interneurons define functionally distinct regions within lobster olfactory glomeruli. J Exp Biol 200:989–1001.
29.
Wägele JW (1989) On the influence of fishes on the evolution of benthic crustaceans. Z Zool Syst Evol Forsch 27:297–309.
30.
Waloszek D, Maas A, Chen J, Stein M (2007) Evolution of cephalic feeding structures and the phylogeny of Arthropoda. Palaeogeography, Palaeoclimatology, Palaeoecology 254:273–287.
31.
Wroblewska J, Whalley S, Fischetti M, Daniel PC (2002) Identification of chemosensory sensilla activating antennular grooming behaviour in the Caribbean spiny lobster, Panulirus argus. Hem Senses 27:769–778.
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