Redescription of The Southern Dumpling Squid Euprymna Tasmanica and A Revision of The Genus Euprymna (Cephalopoda: Sepiolidae)
Redescription of The Southern Dumpling Squid Euprymna Tasmanica and A Revision of The Genus Euprymna (Cephalopoda: Sepiolidae)
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塔斯马尼亚南方饺子乌贼 Euprymna 的重新描述和 Euprymna 属的修订（头足类：乌贼科）
DOI：
10.1017/s0025315400038662
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发表时间：
1997
影响因子：
1.2
通讯作者：
C. C. Lu
中科院分区：
文献类型：
--
作者：
M. Norman;C. C. Lu
近期对耳乌贼属（Euprymna）的乌贼以及它们与发光细菌（费氏弧菌菌株）的共生关系的关注，促使人们对这一分类尚不明确的乌贼群体进行重新审视。该属已记录有12个种名，其中大多数定义不明确，仅依据原始描述为人所知，且是基于不充分的特征进行区分的。作为解决该群体分类问题的第一步，本文对一种温带澳大利亚物种——南方短尾乌贼（Euprymna tasmanica）进行了详细的重新描述。就目前耳乌贼属的情况而言，大多数成员仅依据成熟雄性个体上增大的吸盘数量和位置来区分，没有可用于鉴别雌性的诊断特征。对该属所有的种名进行了综述，并给出了所提出的有效物种的检索表。本文认为以下6个物种是有效的：贝氏耳乌贼（Euprymna berryi）、霍氏耳乌贼（E. hoylei）、莫氏耳乌贼（E. morsei）、夏威夷耳乌贼（E. scolopes）、南方短尾耳乌贼（E. tasmanica）以及一个在此作为耳乌贼属1号种（Euprymna sp.1）处理的未描述物种。相似耳乌贼（Euprymna similis）是日本莫氏耳乌贼（E. morsei）的同物异名。由于原始描述不充分以及模式标本丢失或质量不佳，本文认为两个物种为疑名（施内哈根耳乌贼（E. schneehageni）和微小耳乌贼（E. pusilla）），而另外4个物种的分类地位仍未确定（信天翁耳乌贼（E. albatrossae）、囊耳乌贼（E. bursa）、狡耳乌贼（E. phenax）和窄指耳乌贼（E. stenodactyla））。
Recent attention to members of the sepiolid squid genus Euprymna and symbiotic associations with luminescent bacteria (Vibrio fischeri strains) has prompted a review of this poorly-resolved group of squids. Twelve nominal species have been placed in this genus of which the majority are ill-defined, known only from their original descriptions and separated on the basis of inadequate characters. As a first step in resolving this group, a temperate Australian species, the Southern dumpling squid, Euprymna tasmanica, is here redescribed in detail. As the genus Euprymna currently stands, most members are only distinguished on the number and position of enlarged suckers in mature males. No diagnostic characters are available to identify females. All nominal species placed in this genus are reviewed and a key to proposed valid species is presented. Six species are considered here to be valid: Euprymna berryi, E. hoylei, E. morsei, E. scolopes, E. tasmanica and an undescribed species treated here as Euprymna sp. 1. Euprymna similis is a synonym of E. morsei of Japan. Due to inadequate original descriptions, and lost or poor type material, two species are considered here to be nomen dubia (E. schneehageni and E. pusilla), while the taxonomic status of four additional species remain unresolved (E. albatrossae, E. bursa, E. phenax and E. stenodactyla).