Basic reproductive biology of daggertooth pike conger, Muraenesox cinereus: A possible model for oogenesis in Anguilliformes

Kobayashi, Yasuhisa; Mototani, T.; Murayama, Fumiyasu; Sakamoto, Tatuya

doi:10.1186/s40851-015-0025-0

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…Indeed, Matić-Skoko et al . (2011) indicates that the majority of males are localized at depths greater than 30 m. Moreover, the predominance of males in deeper waters has been observed in other Anguilliform species, such as C. conger in the Sardinian Channel (Cau & Manconi, 1983) and the Atlantic Iberian waters (Correia et al ., 2009), and the Muraenesox cinereus in the Seto Inland Sea of Japan (Kobayashi et al ., 2015).…”

Section: Discussionmentioning

confidence: 99%

Meristic, morphometric and biological characteristics of the common moray eel (Muraena helena) in northern Tunisia

et al. 2018

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Although common in the Mediterranean, the morphological and biological characteristics of the moray eel Muraena helena are largely unknown. This study, based on 310 specimens caught using a longline at a depth of 50–100 m, addresses this knowledge gap for northern Tunisia, which is a stronghold of the species. There were significantly more males than females, with a sex ratio of 1:1.5. The number of vertebrae between individuals were variable, especially abdominal and caudal vertebrae (range 56–72; 70–84, respectively). Overall, the total number of vertebrae was less variable (138–146 ± 3.6 SE) and similar between males and females. The length-length relationship recorded for M. helena is provided for the first time, with the pre-anal length (paL), pre-dorsal length (pdL) and the head length (hL) growing faster than the total length (TL). According to the weight-length relationship (WLR), positive allometric growth was established for males (b = 3.6), females (b = 3.46) and combined sexes (b = 3.54). The relative condition factor (CF) did not show significant differences between seasons. The gonadosomatic index (GSI) indicated a significant difference between the seasons for females, whilst the hepatosomatic index (HSI) highlighted a significant difference between seasons for both males and females.

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Section: Discussionmentioning

confidence: 99%

Meristic, morphometric and biological characteristics of the common moray eel (Muraena helena) in northern Tunisia

et al. 2018

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Distribution of leptocephali and wintertime hydrographic structure in the Kuroshio Extension and northern subtropical gyre

Miller

Itoh

Watanabe

et al. 2020

Deep Sea Research Part I: Oceanographic Research Papers

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New Finding of Eggs and Leptocephalus for Muraenesox cinereus off Jeju Island, Korea and Its Relation to Environmental Variables

Lee

et al. 2023

JMSE

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The daggertooth pike conger, Muraenesox cinereus, is an important demersal fish species in East Asia but the catch amount has declined in recent years. Spawning areas of M. cinereus have not yet been determined; identifying these have serious implications for resource management. Ichthyoplankton surveys are an effective method of distinguishing fish spawning areas and periods. Fish eggs were sampled from the waters adjacent to South Korea in August 2020 and 2022 using a Multiple Opening/Closing Net and Environmental Sensing System or a bongo net. In 2021, M. cinereus eggs were not collected. Three unidentified eggs (2.0–2.2 mm in diameter) were collected from the southeastern sea of Jeju Island at a seawater depth of 20–30 m and temperature of 20–22 °C. Muraenesox cinereus preleptocephali were gathered at 10–20 m depths from Jeju Island’s southernmost and eastern sea areas. The eggs and preleptocephali were identified as M. cinereus by their mitochondrial DNA 16S rRNA sequences. This is a new finding of eggs and leptocephalus of Muraenesox cinereus off Jeju Island, South Korea, which increases our understanding of the recruitment process of M. cinereus to facilitate resource management and species conservation.

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Basic reproductive biology of daggertooth pike conger, Muraenesox cinereus: A possible model for oogenesis in Anguilliformes

Cited by 4 publications

References 33 publications

Meristic, morphometric and biological characteristics of the common moray eel (Muraena helena) in northern Tunisia

Meristic, morphometric and biological characteristics of the common moray eel (Muraena helena) in northern Tunisia

Distribution of leptocephali and wintertime hydrographic structure in the Kuroshio Extension and northern subtropical gyre

New Finding of Eggs and Leptocephalus for Muraenesox cinereus off Jeju Island, Korea and Its Relation to Environmental Variables

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