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Issue: Vol. 5575 No. 1: 22 Jan. 2025
Type: Article
Published: 2025-01-22
DOI: 10.11646/zootaxa.5575.1.2
Page range: 57-86
Abstract views: 92
PDF downloaded: 5

The abbreviated larval development of Ozius guttatus H. Milne Edwards, 1834 (Crustacea: Brachyura: Eriphioidea: Oziidae)

Department of Life Sciences; The Natural History Museum; Cromwell Road; London SW7 5BD; England
Lee Kong Chian Natural History Museum; Faculty of Science; National University of Singapore; 2 Conservatory Drive; Singapore 117377; Republic of Singapore
Crustacea zoea megalop description comparison O. truncatus H. Milne Edwards 1834 O. rugulosus Stimpson 1858 Lophozozmus pictor (Fabricius 1798) Nanocassiope granulipes (Sakai 1939) N. melanodactylus (A. Milne- Edwards 1867) Pilumnus sluiteri De Man 1842

Abstract

Ovigerous Singapore specimens of Ozius guttatus H. Milne Edwards, 1834 (Eriphioidea: Oziidae) were collected and their larvae reared in the laboratory with an expectation that this species would have a similar larval development to O. truncatus H. Milne Edwards, 1834 and O. rugulosus Stimpson, 1858, e.g., four zoeal stages before the moult to megalop. This, however, was not the case, in fact O. guttatus has an abbreviated development with only two zoeal stages before the metamorphosis to megalop. The purpose of this present study is to describe the larval development of O. guttatus and compare its abbreviated zoeal development with the descriptions of Wear (1968) and Kakati & Nayak (1977) for O. truncatus and O. rugulosus, respectively. Many zoeal characters of O. guttatus are expressed early and the significance of these are discussed. In addition, the zoeal development of O. guttatus is compare with two zoeal stages of Pilumnus sluiteri De Man, 1842 (Pilumnoidea: Pilumnidae) as described by Clark & Ng (2004).

 

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