A new species of the flatfish genus Chascanopsetta (Pleuronectiformes: Bothidae), from the coasts of Kenya and Somalia with comments on C.lugubris

Hensley, Dannie A; Smale, Malcolm J; J.L.B. Smith Institute of Ichthyology

Title: A new species of the flatfish genus Chascanopsetta (Pleuronectiformes: Bothidae), from the coasts of Kenya and Somalia with comments on C.lugubris
Title: Special Publication (J.L.B. Smith Institute of Ichthyology) no.59
Creator: Hensley, Dannie A
Creator: Smale, Malcolm J
Creator: J.L.B. Smith Institute of Ichthyology
Subject: Fishes -- Indian Ocean
Subject: Flatfishes -- Indian Ocean
Date Issued: 1997-12
Date: 1997-12
Type: text
Type: book
Identifier: http://hdl.handle.net/10962/70987
Identifier: vital:29768
Identifier: Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 59
Description: Six species of the genus Chascanopsetta are currently recognized. Recent work on otolith morphology from specimens identified as C. lugubris raised the possibility that three forms of C. lugubris are found in the western Indian Ocean. Re-examination of the voucher specimens showed that one of these forms is a new species, C. kenyaensis, from Kenya and Somalia. The other two forms may show differences in otolith morphology due to ontogeny. The new species most closely resembles C. prorigera from the Hawaiian Archipelago, Emperor Seamounts, and the western North Atlantic. These two species differ in lateral-line scale counts, body depth, upper-jaw length, and coloration. Many comparative specimens of C. lugubris were examined. It was found that this species’ distribution rounds the Cape of Good Hope from the southwestern Indian Ocean into the southeastern Atlantic. Specimens from this southern African region show higher dorsal- and anal-fin ray counts than those from more northern areas in the Atlantic, western Pacific, and Indian oceans. There is some indication that what some authors refer to as the Indo-West Pacific subspecies C. lugubris lugubris rounds the Cape of Good Hope and also occurs in parts of the eastern Atlantic. A more thorough comparison of C. lugubris from different regions is needed.
Format: 18 pages
Format: pdf
Publisher: J.L.B. Smith Institute of Ichthyology
Language: English
Relation: Special Publication (J.L.B. Smith Institute of Ichthyology)
Relation: Hensley, D. A. and Smale, M. J.(1997) A new species of the flatfish genus Chascanopsetta (Pleuronectiformes: Bothidae), from the coasts of Kenya and Somalia with comments on C.lugubris. Grahamstown, J.L.B. Smith Institute of Ichthyology, Special publication, no. 59
Relation: Special Publication (J.L.B. Smith Institute of Ichthyology) volume number 59 1 18 December 1997 0075-2088
Rights: J.L.B. Smith Institute of Ichthyology
Rights: Use of this resource is governed by the terms and conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/)

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