Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [365638]

Species in disguise: A new species of Hornshark from Northern Australia (Heterodontiformes: Heterodontidae) White, W.T.; Mollen, F.H.; O’Neill, H.L.; Yang, L.; Naylor, G.J.P. (2023). Species in disguise: A new species of Hornshark from Northern Australia (Heterodontiformes: Heterodontidae). Diversity 15(7): 849. https://dx.doi.org/10.3390/d15070849 In: Diversity. MDPI: Basel. ISSN 1424-2818; e-ISSN 1424-2818, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 391054 [ download pdf ]

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Trefwoorden

Classification > Taxonomy Heterodontus Blainville, 1816 [WoRMS] Marien/Kust

Author keywords

species complex; egg case; morphology; genetics

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Auteurs		Top
White, W.T. Mollen, F.H., meer O’Neill, H.L.	Yang, L. Naylor, G.J.P.

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Abstract

A new species of hornshark is described from northwestern Australia based on six whole specimens and a single egg case. Heterodontus marshallae n. sp. was previously considered to be conspecific with H. zebra from the Western Pacific. The new species differs from H. zebra in the sequence of its NADH2 gene, several morphological characters, egg case morphology and key coloration features. Despite the coloration being similar between H. marshallae n. sp. and H. zebra, i.e., pale background with 22 dark brown bands and saddles, they differ consistently in two key aspects. Firstly, the snout of H. marshallae n. sp. has a dark semicircular bar, usually bifurcated for most of its length vs. a pointed, triangular shaped dark marking in H. zebra. Secondly, H. zebra has a dark bar originating below the posterior gill slits and extending onto anterior pectoral fin, which is absent in H. marshallae n. sp. The Heterodontus marshallae n. sp. is endemic to northwestern Australia and occurs in deeper waters (125–229 m) than H. zebra (0–143 m).

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