Reproductive traits exhibited by the paedomorphic gobies exploited in the Majorcan transparent goby fishery (western Mediterranean) and their management implications

IF 0.8 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
Inmaculada Riera-Batle, Enrique Massutí-Pascual, Elena Pastor Gracia, Antonio María Grau Jofre, Amalia Grau Jofre
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引用次数: 0

Abstract

An important small-scale fishery in Majorca targets three similar goby species: Aphia minuta, Pseudaphia ferreri and Crystallogobius linearis. Histological examination of the gonads of these species sampled from landings during the fishing season revealed characteristic reproductive traits that could be defined as abbreviate iteroparity. The transparent goby (Aphia minuta) and Ferrer’s goby (Pseudaphia ferreri) showed batch abbreviate iteroparity as a reproductive strategy, whereas the crystal goby (Crystallogobius linearis) showed total abbreviate iteroparity. Despite their short lifespans, all of them have a spawning season whose duration is longer than the legal fishing season. Additionally, all of them maintain a standing stock of primary growth oocytes in their gonads, indicating more than one spawning season in their lifespan. These reproductive features partially offset their special sensitivity to potential overexploitation and environmental changes but also suggest that the fishery needs special management to avoid breaking the balance between sustainability and fishing effort. The results of size at maturity and potential annual fecundity in the three species of the fishery are also reported and discussed.
马略卡透明虾虎鱼渔场(地中海西部)开发的幼年虾虎鱼表现出的繁殖特征及其管理意义
马略卡岛的一个重要的小规模渔业以三种类似的虾虎鱼为目标:Aphia minuta、Pseudaphia ferreri和Crystallogobius linearis。对这些物种在捕鱼季节登陆时取样的性腺进行组织学检查,揭示了可被定义为缩写迭代性的特征性繁殖特征。作为繁殖策略,透明虾虎鱼(Aphia minuta)和费雷尔虾虎(Pseudaphia ferreri)表现出批量缩写的迭代性,而水晶虾虎鱼则表现出完全缩写的迭代率。尽管它们的寿命很短,但它们都有一个产卵季节,其持续时间比合法捕鱼季节更长。此外,它们的性腺中都保持着初级生长卵母细胞的存量,这表明它们一生中有不止一个产卵季节。这些繁殖特征部分抵消了它们对潜在的过度开发和环境变化的特殊敏感性,但也表明渔业需要特殊管理,以避免打破可持续性和捕鱼努力之间的平衡。还报道和讨论了三种渔业成熟时的大小和潜在年繁殖力的结果。
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来源期刊
Scientia Marina
Scientia Marina 生物-海洋与淡水生物学
CiteScore
2.10
自引率
0.00%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.
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