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ArticleDescription of two new species of sandlances, genus Bleekeria (Perciformes, Ammodytidae) from the Andaman Sea (northeastern Indian Ocean) 2021
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No results found.Two new species of Bleekeria Günther, 1862 are described from specimens collected in the Andaman Sea off the coast of Myanmar during bottom surveys conducted by the R/V Dr Fridtjof Nansen in 2015 and 2018. They are distinguished from each other and from congeners by a combination of morphological and meristic characters as well as fin coloration and genetic variance. Bleekeria albicauda sp. nov. has pelvic fins, 40–41 dorsal-fin rays, 54–55 total vertebrae, no teeth in jaws, 4 scale rows between dorsal-fin origin and lateral line, a single row of about 10 scales on mid-upper part of opercle, scales on central part of body clearly shorter than their height, caudal fin with white upper and lower lobes when fresh (unique within the genus). Bleekeria nigrilinea sp. nov. has no pelvic fins, 37–39 dorsal-fin rays, 49–50 total vertebrae, 2½ scale rows between dorsal-fin origin and lateral line (the smallest count within the genus with B. estuaria of Mozambique brackish water), 5–6 scales on mid-upper part of opercle arranged in a single row, scales on central part of body clearly longer than their height, upper and lower margins of caudal fin black when fresh (unique within the genus). The COI gene sequences of the two new species showed clear genetic divergence (pairwise K2P, >10 %) from Bleekeria estuaria Randall & Ida, 2014 and Bleekeria mitsukurii (Jordan & Evermann, 1902). A key to the species of Bleekeria is provided. -
Book (stand-alone)North Atlantic Batoids and Chimaeras Relevant to Fisheries Management. A Pocket Guide 2012
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No results found.This Pocket Guide presents a fully illustrated identification guide to a selection of batoid and chimaera species of the North Atlantic, encompassing FAO Fishing Areas 21 and 27. It includes 33 species of batoids and 3 chimaeras selected as being most relevant to commercial fisheries, vulnerable to exploitation due to their life history characteristics, or are taken in large numbers as discarded bycatch. Information under each species account includes FAO common names, local names, scientific na me, FAO 3-alpha code, a colour illustration of the species dorsal or lateral view and often illustrations of anatomical details, main field marks and diagnostic features, size and main distinctive characters of similar species occurring in the area. Moreover, it includes a photograph of the species, information on fisheries, fishing methods, EU, non-EU, and RFMOs regulations in force in 2012, geographic distribution, conservation status, whether it is a prohibited species, zones of occurrence an d maximum depth of commonly caught specimens. The pocket guide is aimed at providing a quick reference and identification tool for the batoids and chimaeras of the North Atlantic. The pocket format and the plastic support make it an easy-to-carry tool that can be used in wet environments and underwater. -
Book (stand-alone)Identification guide to the deep-sea cartilaginous fishes of the Indian Ocean 2013
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No results found.This guide was prepared under the “FAO Deep–sea Fisheries Programme”, thanks to a generous funding from the Governments of Norway and Japan (Support to the implementation of the International Guidelines on the Management of Deep-Sea Fisheries in the High Seas and Fisheries management and marine conservation within a changing ecosystem context projects) for the purpose of assisting states, institutions, the fishing industry and RFMO/As in the implementation of FAO International Guidelines for the Management of Deep-sea Fisheries in the High Seas. It was developed in close collaboration with the FishFinder Programme of the Marine and Inland Fisheries Branch, Fisheries Department, Food and Agriculture Organization of the United Nations (FAO). Its production is the result of a collaborative effort among scientists, fishery observers and the fishing industry who attended the FAO regional workshop held in Flic en Flac, Mauritius, from January 16 to 18, 2013. The general objective of the work shop was to discuss, share experiences and finally draft recommendations for the development of field products aimed at facilitating the identification of Indian Ocean deep-sea cartilaginous fishes. The present guide covers the deep–sea Indian Ocean, primarily FAO Fishing Areas 51 and 57, and that part of Area 47 that extends from Cape Point, South Africa to the east, e.g. the extreme southwestern Indian Ocean. It includes a selection of species of major, moderate and minor importance to fisheri es as well as those of doubtful or potential use to fisheries. It also covers those little known species that may be of research, educational, and ecological importance. The Indian Ocean deep–sea chondrichthyan fauna is currently represented by 117 shark, 61 batoid and 17 chimaera species. This guide includes full species accounts for 36 shark species selected as being the more difficult to identify and/or commonly caught. Each species is described, depicted with a colour illustration and photo, and key distinguishing features of similar–looking species occurring in the same area are highlighted allowing for easy and accurate identification in the field. An additional 16 shark species, that have very particular characteristics and/or are rarely caught, are displayed with a simplified account that includes a line drawing and other information useful for their correct identification. Finally, short accounts of 52 shark species that could be misidentified with more common species occurrin g in the area are also included. The batoids, as the information available on the species being caught in the Indian Ocean is scanty and in order to avoid confusion among users, are dealt with at the family level, whereas the chimaeras at the genus level. Therefore, in order to improve knowledge on the latter groups it is recommended that the caught specimens be preserved for further investigation following the instructions here included. This guide is intended to help fishery workers collecting catch data in the field in the identification of the cartilaginous fish species they might encounter. It is conceived to be updatable, offering the possibility to add new species accounts as new species are described.
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