水产学报2024，Vol.48Issue(9)：99-112,14.DOI:10.11964/jfc.20230914147
叶灯鱼与异灯鱼两属鱼类的分类与仔稚鱼形态学比较
Taxonomy and morphological comparison of larva and juvenile stages in the genera of Lobianchia and Idiolychnus
摘要
Abstract
Globally,the fish genera Lobianchia Gatti,1904 and Idiolychnus Nafpaktitis et Paxton,1978 belong to the Myctophidae family,within the Myctophiformes order.The genus Lobianchia includes two species:Lobian-chia dofleini(Zugmayer,1911)and Lobianchia gemellarii(Cocco,1838),while the genus Idiolychnus comprises only one species Idiolychnus urolampus(Gilbert et Cramer,1897).Currently,there are limited reports on Lobian-chia and Idiolychnus in Chinese waters,with adults,larvae and juveniles of Lobianchia gemellarii documented in the waters off eastern Taiwan,and larvae and juveniles identified as Lobianchia gemellari and Lobianchia urolam-pus collected from the Kuroshio Current region off the East China Sea.To further elucidate the taxonomy and early developmental morphology of these species,an identification key for the these two genera Lobianchia Gatti,1904 and Idiolychnus Nafpaktitis et Paxton,1978 was compiled.Following a review of the data and samples from the aforementioned surveys conducted from June to July 1984(summer)and December 1984 to January 1985(winter),the larvae and juveniles previously identified as L.gemellari and L.urolampus,were corrected to L.gemellarii(Cocco,1838)and I.urolampus(Gilbert et Cramer,1897),respectively.Additionally,the early develop-mental morphology of L.gemellarii post-larva of 5.10 mm in BL and the I.urolampus juvenile of 6.80 mm in BL were described respectively.The developmental morphological characteristics of larvae and juveniles ofL.dofleini,L.gemellarii,and I.urolampus juvenile were discussed.Upon comparison,the aliform pectoral fins of Lobianchia and Idiolychnus larvae and juveniles represent a distinctive morphological feature.A comparative analysis of melanophore shape,quantity,and distribution on the body surface of larvae and juveniles from these two genera was performed.As analyzed,melanophores shape and quantity,which conceivably vary with habitats,exhibit species-specificity.Thus,melanophores shape and quantity can be used as morphological characteristics for species identification.The developmental sequence and distribution of the branchiostegal organ(Br)in Lobian-chia and Idiolychnus larvae and juveniles were elucidated.Analysis of the distribution data of Lobianchia and Idiolychnus larvae and juveniles across various oceans suggests that Lobianchia dofleini larvae and juveniles are rarely found in the Northwest Pacific.Spawning stocks of Lobianchia gemellarii in the Kuroshio Current region off the East China Sea reproduce during winter,spring and summer,but the specifics of their spawning habits remain unclear.This study contributes to understanding of the morphology and ecology of lanternfishes early life stages and offers scientific evidence for the utilization and management of these small-sized marine fish resources.关键词
日本叶灯鱼/道氏叶灯鱼/异灯鱼/分类/仔稚鱼/发育形态Key words
Lobianchia gemellarii(Cocco,1838)/Lobianchia dofleini(Zugmayer,1911)/Idiolychnus urolampus(Gilbert et Cramer,1897)/taxonomy/fish larvae and juveniles/developmental morphology分类
农业科技引用本文复制引用
柳淑芳,刘巧红,王焕,李昂,安长廷,万瑞景,庄志猛..叶灯鱼与异灯鱼两属鱼类的分类与仔稚鱼形态学比较[J].水产学报,2024,48(9):99-112,14.基金项目
崂山实验室科技创新项目(LSKJ202203802) （LSKJ202203802）
国家自然科学基金项目(31272667) （31272667）
中央级公益性科研院所基本科研业务费专项(20603022022024) Science and Technology Innovation Project Funded by Laoshan Laboratory(LSKJ202203802) （20603022022024）
National Natural Science Foundation of China(31272667) （31272667）
the Central Public-interest Scientific Institution Basal Research Fund(20603022022024) （20603022022024）
