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Description of Merluccius tasmanicus sp. nov. and redescription of Merluccius australis (Pisces: Merlucciidae)

Published online by Cambridge University Press:  12 January 2006

J. Matallanas  and
D. Lloris
J. Matallanas
Affiliation:
Unidad de Zoología, Departamento de Biología Animal, Biología Vegetal y Ecología. Universidad Autónoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
D. Lloris
Affiliation:
Institut de Ciències del Mar (CMIMA-CSIC), Passeig Marítim de la Barceloneta 37–49, 08003 Barcelona, Spain, E-mail: lloris@icm.csic.es
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Abstract

A new hake species, Merluccius tasmanicus sp. nov., is described from New Zealand waters and another species, Merluccius australis is redescribed. Merluccius tasmanicus sp. nov. differs from all other congeneric species in the following combination of characters: upper profile of the head slowly concave; lateral line slowly concave in the caudal region; body depth 4.9–5.9 times in standard length (SL); orbital diameter 6.1–7.1 times in head length, 2.1–2.2 times in snout length and 1.6–1.9 times in interorbital width; second dorsal fin rays, 42–43; anal fin rays, 42–44; lateral line scales ∼164. Merluccius australis is redescribed to clarify the identity of this species. Merluccius australis differs from all other congeneric species in the following combination of characters: upper profile of the head straight; lateral line straight in the caudal region; body depth 6.6–7.1 times in SL; orbital diameter 4.5–5.4 times in head length, 1.2–1.7 times in snout length and 1.0–1.3 times in interorbital width; second dorsal fin rays, 40–43; anal fin rays, 40–43; lateral line scales, more than 155. Merluccius tasmanicus sp. nov. is found in New Zealand and Patagonian waters and occasionally in Japanese waters; Merluccius australis is reported in both New Zealand and Patagonian waters.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 86 , Issue 1 , February 2006 , pp. 193 - 199
Copyright
2006 Marine Biological Association of the United Kingdom

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