著者

中村 潤平 福地 伊芙映 立原 一憲 本村 浩之

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.67, no.1, pp.123-128, 2020

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<p>Two specimens (227.8–251.7 mm standard length) of the rare grouper <i>Cephalopholis polleni</i> (Bleeker, 1868) were collected off Okinawa-jima and Ishigaki-jima islands, Ryukyu Islands, the species having previously been known from scattered insular localities in the Indo-Pacific Ocean, including the Ryukyu Islands between the Amami and Yaeyama Islands. Although a single specimen of <i>C. polleni</i> had been previously obtained from a fish market in Naha, Okinawa-jima Island, its capture locality was unknown and the specimen is now apparently lost. All other Japanese records of the species were based solely on photographs. Accordingly, the present specimens of <i>C. polleni</i>, described here in detail, from Okinawa-jima and Ishigaki-jima islands represent important specimen-based records of the species from Japan, being the first with precise locality data. A review of previous distribution records of <i>C. polleni</i> from Japanese waters is also provided.</p>

著者

小枝 圭太 藤井 琢磨 吉野 哲夫

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.61, no.1, pp.27-31, 2014-04-25 (Released:2016-05-22)

参考文献数

17

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A single specimen of Photoblepharon palpebratum (Boddaert, 1781), formerly limited to the tropical western Pacific, was collected from Okinawa Island, Japan at a depth of 1 m. The specimen was characterized by the following combination of characters: single dorsal fin with 3 spines; a black shutter lifting to cover the subocular organ; a large white spot on the dorsal corner of the opercle; pelvic-fin rays I, 6. The tiny first dorsalfin spine was identified from a radiograph. The specimen represents the first record of P. palpebratum from Japan and is the northernmost record of the species. The specimen produced a total of 273 eggs, but those were probably postmaturity.

著者

酒井 治己

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.56, no.2, pp.178-179, 2009 (Released:2014-03-05)

参考文献数

7

著者

村瀬 敦宣 宮崎 佑介 瀬能 宏

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.59, no.1, pp.11-20, 2012-04-25 (Released:2014-05-16)

参考文献数

31

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Twenty-seven individuals of Lateolabrax latus (165.7–691.5 mm in total length), a species normally associated with a rocky offshore habitat in southern Japan, were collected from July to October 2009 in the lower reaches of rivers in Yaku-shima Island, Kagoshima Prefecture, southern Japan by hook and line. Furthermore, schools of immature individuals were observed around hard structures (including rocks and tetrapods) or in riffle zones in the rivers, L. latus clearly making active use of river environments in Yaku-shima Island during its life history. Because a detailed morphological description of the species has not been given since its original description, the specimens from Yakushima Island are described and compared with other congeners. Characters of the former agreed closely with the original diagnosis of L. latus. Some individuals less than 200 mm standard length had tiny scattered spots, smaller than those on other congeners, on the region above the lateral line. Specimens from the Ambo River represent the southernmost record of the species.

著者

中村 潤平 福地 伊芙映 立原 一憲 本村 浩之

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

2020

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<p>Two specimens (227.8–251.7 mm standard length) of the rare grouper <i>Cephalopholis polleni</i> (Bleeker, 1868) were collected off Okinawa-jima and Ishigaki-jima islands, Ryukyu Islands, the species having previously been known from scattered insular localities in the Indo-Pacific Ocean, including the Ryukyu Islands between the Amami and Yaeyama Islands. Although a single specimen of <i>C. polleni</i> had been previously obtained from a fish market in Naha, Okinawa-jima Island, its capture locality was unknown and the specimen is now apparently lost. All other Japanese records of the species were based solely on photographs. Accordingly, the present specimens of <i>C. polleni</i>, described here in detail, from Okinawa-jima and Ishigaki-jima islands represent important specimen-based records of the species from Japan, being the first with precise locality data. A review of previous distribution records of <i>C. polleni</i> from Japanese waters is also provided.</p>

著者

岩田 明久 田 祥麟 水野 信彦 崔 基哲

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.31, no.4, pp.373-388, 1985-02-20 (Released:2011-02-23)

参考文献数

36

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ドンコ属魚類について再検討を行なった.ドンコ属は, 1) 平坦な骨質隆起が眼の背方上部にある事, 2) 前鯉蓋骨に棘がない事, 3) 鋤骨に歯がない事, 4) 鯉孔は目の下方まで達する事, 5) 両眼間隔は眼径より大きい事, 6) 背鰭前部鱗は鼻孔後方に達する事などで定義される.該当種はドンコOdontobutis obscuraobscura, カラドンコO.o.potamophila, セマダラドンコ (〓〓〓〓〓) O.o.interruta, コウライドンコ (〓〓〓) O.platycephalaで, 後2者は新亜種および新種である.コウライドンコO.platycephalaは頭部側線感覚系において孔器列の前鯉蓋下顎列上にふたつの感覚管を有する事で他のドンコ類と明瞭に区別される.カラドンコO.o.potamophilaとセマダラドンコO.o.interruptaは眼上列眼後部にひとつの感覚管を有する事でドンコO.o.obscuraと区別される.カラドンコO .o.potamophilaとセマダラドンコO.o.interruptaの差異は前者が眼下列と眼前頬縦列が分離しているのに対し後者はそれらが連続している事である.また後者の体側背方には明色帯が縦走するため暗色鞍状斑は中断される.ドンコO.o.obscuraは西日本, カラドンコO.o.potamophilaは中国に分布する.セマダラドンコO.o.interruptaは韓国の錦江以北の西韓亜地域に, コウライドンコO.platycephalaは東韓亜地域北部を除く韓国全土にそれぞれ分布している.

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.51, no.2, pp.205-211, 2004-11-25 (Released:2010-06-28)

著者

國島 大河 立原 一憲

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.66, no.2, pp.161-170, 2019

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<p>The species of <i>Mugilogobius</i> sp. (Japanese name: Izumi-haze) and <i>M. chulae</i> are both common species, sympatrically inhabiting the estuaries and tidal flats of Okinawajima Island. Some species of <i>Mugilogobius</i> has a urea cycle, and their processing ability is higher, especially in northern distributed species, such as <i>M. abei</i> and <i>Mugilogobius</i> sp. It is possible to differentiate their life history traits and habitats on the basis of urea processing ability. However, because little is known in detail of their life history and habitat, <i>Mugilogobius</i> sp. and <i>M. chulae</i> were investigated through monthly sampling conducted on the southern part of the Sashiki Tidal flat and Manko Wetland on Okinawa-jima Island, from January 2012 to January 2013. The spawning seasons of <i>Mugilogobius</i> sp. and <i>M. chulae</i> are from January to October and April to October, respectively, with peaks in the summer period (April to October), indicating that maturity in both species is closely related to changes in water temperature. A comparison with the spawning season of <i>M. abei</i>, a temperate region species, revealed the subtropical species to spawn over a longer period. Estimates of daily age from otolith analyses indicated the possibility of recruitment from other areas, since histological observations revealed mismatches of gonads and birthmonths between different spawning seasons, as estimated by back-calculations of daily age. The longevity of <i>Mugilogobius</i> species was about six months. The study also revealed the growth rate of <i>Mugilogobius</i> sp. to be similar to that of <i>M. chulae</i>. <i>Mugilogobius chulae</i> locally inhabited mangrove habitats, whereas <i>Mugilogobius</i> sp. showed wide habitat use and was less susceptible to decreasing habitat than the former. Accordingly, future conservation of <i>M. chulae</i> is dependent upon suitable mud habitat associated with mangroves.</p>

著者

荒井 寛

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.38, no.3, pp.319-321, 1991-11-30 (Released:2010-06-28)

参考文献数

9

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神奈川県三浦半島よりニザダイ科魚類の一種, モアイテングハギ (新称) Naso fageniの幼魚を1個体採集した.本種はインド洋西部, オーストラリア北西部, フィリピンから知られているだけであった.本種は背鰭と臀鰭の条数が少ないことで同属他種とは容易に区別される.これまでに知られた尾又長170mm以上の個体とは異なり, 今回採集された尾叉長103mmの個体の尾鰭は, 三日月形ではなく, わずかに湾入していた.また, 生時には尾柄に白帯があった.

著者

久保 田正 上野 輝彌

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.18, no.1, pp.51-54, 1971-06-15 (Released:2010-06-28)

参考文献数

11

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Young specimens of Icosteus aenigmaticus Lockington have been reported from several places in Japan.All of these specimens were less than 326 mm in total length and were described as deep-bodied, having blotches on body, pelvic fins, and rounded posterior margin of the caudal fin.The specimen reported here is a mature male collected from Suruga Bay, : Shizuoka Prefecture, on March 15, 1970.The total length is 950 mm.The body color before fixation was dark brown and the pelvic fin is absent.The posterior margin of the caudal fin is lunate.The characters of this specimen match well with those of the specimen described as Acrotus willoughbyi Bean, which has been considered to be a junior synonym of Icosteus aenigmaticus.The appearance of the specimen in Suruga Bay is probably related to the appearance of unusually cold water masses off the coast of southern Japan on the Pacific side.

著者

Jack T. Moyer 佐野 光彦

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.34, no.1, pp.108-112, 1987-06-10 (Released:2010-06-28)

参考文献数

25

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三宅島の伊ケ谷湾ではウミスズメとシマウミスズメのなわばりがかなり重複するため, 両種の食性を調べ, 食いわけを行っているかどうかを明らかにした.ウミスズメは岩や転石に付着する海綿類や腹足類の卵を主に食べていたのに対し, シマウミスズメは砂地に生息する多毛類や, 岩や転石に付着するホヤ類を主に摂餌していた.両種の餌には明瞭な差があることが判明した.

著者

Jack T. Moyer

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.26, no.2, pp.148-160, 1979-09-15 (Released:2010-06-28)

参考文献数

23

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三宅島沿岸に見出されるハコフグ科3種 (シマウミスズメ, ウミスズメ, ハコフグ) の産卵生態について報告した, 上記のうちシマウミスズメにっいてはとくに詳細な観察がなされた。上記3種は1尾の雄と2-4尾の雌から成るハーレムを形成し, 産卵はこのハーレム内においてペアで行われる。シマウミスズメについて組織学的な検討を行った結果では, これら3種に雌雄同体現象は見出せないようである.ウミスズメとハコフグは午後おそく水面近くで産卵するガシマウミスズメは日没の10~20分後に海底の基盤付近で産卵する.本3種の産卵習性の相違と, 3種とも雄よりも雌の個体教が多い理由にっいては捕食圧との関連が推察された、また, ハコフグ類の皮膚分泌毒ostracitoxinの役割についても捕食との関連が論じられた.

著者

矢頭 卓児 山川 武

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.30, no.3, pp.217-220, 1983-11-28 (Released:2010-06-28)

参考文献数

10

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土佐湾より得られた2個体 (標準体長, 151.0mm, 88.0mm) をもとに新種ヒメソコホウボウPterygotrigla multipunctata sp.nov.を記載した.本種はソコホウボウP.hemisticta (Temminck et Schlegel) に似るが, 本種には上膊棘がないこと, 胸鰭鰭条数が13+iiiであること, および第1背鰭に眼径大の1黒色斑がないことで区別される。また, 本種はフィリピン産のP.tagala (Herre et Kaufhnan) とは, 上膊棘がないこと, 吻長が眼窩径より明らかに長いことで明瞭に区別できる。

著者

西尾 正輝 タハ ソリマン 山崎 裕治

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.59, no.2, pp.147-153, 2012-11-05 (Released:2014-12-02)

参考文献数

26

被引用文献数

5

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To clarify the distribution during spawning and spawning habitat of Itasenpara bitterling (Acheilognathus longipinnis), one of the most endangered freshwater fish species in Japan, the habitats of mature individuals and freshwater mussels (Unio douglasiae nipponensis) were investigated in the Moo River (Himi City, Toyama Prefecture, Japan) in relation to environmental factors during the fall and winter seasons in 2010. Mussel density-influenced sex ratios of bitterling varied in the study area, males remaining in areas of high mussel density during spawning, while females frequented deeper feeding grounds until their eggs had matured.

著者

鈴木 清 木村 清志

出版者

魚雑

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.27, no.1, pp.77-81, 1980

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三重県沖で行われた深海カゴ網の試験操業によって漁獲された標本の中から5個体の.Psychrolutes inermis (Vaillant) が得られた.これは本邦初記録で, 和名としてクマノカジカを提唱する.本種は従来Cottun-culoides inermisとして記載されていたが, 近縁と思われるウラナイカジカやPsychrolutes phrictus Stein et Bondの記載と比較した結果, ウラナイカジカ属Psychrolutesに帰属させるべきであるとの結論に達した.本種は背鰭条数 (VII~VIII, 17~18), 胸鰭条数 (20~21) および側線が完全に退化していることなどにより近縁種と区別される.

著者

國島 大河 立原 一憲

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

2019

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<p>The species of <i>Mugilogobius</i> sp. (Japanese name: Izumi-haze) and <i>M. chulae</i> are both common species, sympatrically inhabiting the estuaries and tidal flats of Okinawajima Island. Some species of <i>Mugilogobius</i> has a urea cycle, and their processing ability is higher, especially in northern distributed species, such as <i>M. abei</i> and <i>Mugilogobius</i> sp. It is possible to differentiate their life history traits and habitats on the basis of urea processing ability. However, because little is known in detail of their life history and habitat, <i>Mugilogobius</i> sp. and <i>M. chulae</i> were investigated through monthly sampling conducted on the southern part of the Sashiki Tidal flat and Manko Wetland on Okinawa-jima Island, from January 2012 to January 2013. The spawning seasons of <i>Mugilogobius</i> sp. and <i>M. chulae</i> are from January to October and April to October, respectively, with peaks in the summer period (April to October), indicating that maturity in both species is closely related to changes in water temperature. A comparison with the spawning season of <i>M. abei</i>, a temperate region species, revealed the subtropical species to spawn over a longer period. Estimates of daily age from otolith analyses indicated the possibility of recruitment from other areas, since histological observations revealed mismatches of gonads and birthmonths between different spawning seasons, as estimated by back-calculations of daily age. The longevity of <i>Mugilogobius</i> species was about six months. The study also revealed the growth rate of <i>Mugilogobius</i> sp. to be similar to that of <i>M. chulae</i>. <i>Mugilogobius chulae</i> locally inhabited mangrove habitats, whereas <i>Mugilogobius</i> sp. showed wide habitat use and was less susceptible to decreasing habitat than the former. Accordingly, future conservation of <i>M. chulae</i> is dependent upon suitable mud habitat associated with mangroves.</p>

著者

三木 涼平 桜井 雄 岩槻 幸雄

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.61, no.2, pp.85-88, 2014-11-05 (Released:2016-12-25)

参考文献数

8

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Six specimens (189–306 mm in standard length) of the lethrinid fish, Gymnocranius superciliosus Brosa, Béarez, Paijo and Chen, 2013, recently described from New Caledonia, were collected from the Ryukyu Islands, Japan, being the first record of the species from the Northern Hemisphere. Gymnocranius superciliosus is distinguishable from its congeners by the following combination of characters: elongated body (body depth at 1st dorsal-fin spine origin 2.53–3.06 in standard length); villiform to conical teeth on sides of both jaws; forked caudal fin with rounded posterior margins on both lobes, tips slightly pointed; six rows of scales between 5th dorsal-fin spine base and lateral line; no transverse dark brown bar laterally on head or body, except between eye and interopercular flange; blue speckles dispersed on snout and cheek; body scales each with a basal dark brown dot, forming longitudinal rows; reddish color on margins of dorsal, anal, and pelvic fins.

著者

Bell Lori J.

出版者

魚雑

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.30, no.2, pp.158-167, 1983

被引用文献数

2

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イトビキベラの生殖行動が伊豆諸島の三宅島で1979年7~9月に観察された.ほとんどの雄はなわばり性を示したが, 雌は群れを形成していた.個々の雌は雄のなわばりを移動し, 生殖行動はランダムではないが乱交的であった.三宅島における生殖時期は5~9月と推定された.生殖行動は午後顕著になり, 3段階の産卵前行動, 即ち誇示, 雌への突進, 回転が観察された.産卵はペアで行なわれた.産卵時刻は日没が早くなるにつれて早くなった.産卵時刻と光の強さに関係のあることが示唆された.なわばりを持つterminalphaseの雄による産卵行動の妨害も観察された.In.itial phaseの雄は本研究の個体群の中には見られなかった.雄のなわばり性は産卵にともなうなわばりを防衛する行動に基づいていた.

著者

千田 哲資 木村 基文 神原 利和

出版者

魚雑

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.40, no.2, pp.193-198, 1993

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西太平洋熱帯域 (北緯2-8°, 東経140-151°) の漂流物に随伴する魚類の胃内容物を調べたところ, 5つの科に属する6種がウミアメンボを食していた.特にギンガメアジでは61%と高い捕食率であったのに対し, 他の7種のアジ科魚類130個体では1個体のツムブリを除いてウミアメンボを食していたものはなかった.捕食されていたウミアメンボのうち, 66.4%がツヤウミアメンボ, 32.7%がセンタウミアメンボであった.それぞれ1個体の雌雄のコガタウミアメンボが, 従来本種は分布していないと考えられていた北緯4。付近で採集したギンガメアジ (別個体) に食されていた.魚類は海鳥とともに, 遠洋性ウミアメンボの無視できない捕食者であると考えられた.

著者

小山 直人 森 幹大 中井 宏施 北川 忠生

出版者

日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.58, no.1, pp.81-86, 2011

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Genetic disturbance in wild populations of Medaka (Oryzias latipes) has resulted from the introduction of populations originating from commercial strains. To clarify the genetic composition of orange-red type and wild type commercial strains of O. latipes ('himedaka' and 'kuromedaka', respectively), polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and sequencing analyses of the mitochondrial cytochrome b gene were conducted for Medaka populations cultured in 2 fish farms and others purchased from 21 aquarium fish shops. All 'himedaka' populations showed a high frequency of the B27 mitotype, an original mitotype of 'himedaka', and a low frequency of the B1a mitotype, an introduced mitotype from wild populations in Okayama or Nara Prefectures. 'Kuromedaka' populations, originating from cultured populations, were characterized primarily by the B27 and B1a mitotypes, being a result of hybridization between wild populations and 'himedaka'. All 'kuromedaka' populations originating from wild populations had their own native mitotypes, although some also had the B1a mitotype, which was inferred as being of 'himedaka' origin.