著者

安田 富士郎 望月 賢二 河尻 正博 能勢 幸雄

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:18847374)

巻号頁・発行日

vol.18, no.3, pp.118-124, 1971

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相模湾一帯及び伊豆諸島より得られたムツおよびクロムツ172個体について.8計数形質, 20計量形質, 体色及び内部形態として頭蓋骨, 前上顎骨の比較検討を行なったところ, 4計数形質, 体色及び内部形態で両者を識別することが出来た.<BR>以上の点からクロムツとムツとを同一種として取扱うことは適切でなく, 別種の魚として扱われるべきである.

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.61, no.1, pp.48-50, 2014-04-25

著者

片野 修 細谷 和海 井口 恵一朗 青沼 佳方

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.48, no.1, pp.19-25, 2001-05-25 (Released:2010-06-28)

参考文献数

31

被引用文献数

12

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Freshwater fish in rice fields near the Chikuma River, Nagano Prefecture, were investigated by visual census and net sampling. The rice fields were classified into three types. Type 1-terraced and supplied with water from an upper pond; type 2-supplied with water from drainage ditches; and type 3-supplied and drained by separate irrigation ditches. Rhinogobius sp.OR (sensu Kawanabe and Mizuno, 1989), Misgurnus anguillicaudatus and Pseudorasbora parva were abundant in type 1 fields, whereas Tribolodon hakonensis, Carassius spp., M. anguillicaudatus and Gnathopogon elongatus elongatus were recorded in type 2 fields. Only M. anguillicaudatus was found in type 3 fields. The fish abundance and diversity did not differ significantly between type 1 and 2, but was extremely poor in type 3. The recent rearrangement of rice fields from types 1 and 2 to type 3 evidently reduced fish abundance and diversity.

著者

桑原 雅之

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.60, no.1, pp.63-67, 2013-04-25 (Released:2015-05-05)

参考文献数

33

被引用文献数

1

著者

桑原 雅之 井口 恵一朗

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.40, no.4, pp.495-497, 1994-02-15 (Released:2010-06-28)

参考文献数

21

被引用文献数

3

著者

岸野 底 米沢 俊彦

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.60, no.2, pp.91-101, 2013-11-05 (Released:2015-12-26)

参考文献数

40

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The longitudinal distribution of Ryukyu-ayu Plecoglossus altivelis ryukyuensis in the Katoku River, a small stream on Amami-oshima Island, southern Japan, was observed from December 2003 to November 2004. The number of Ryukyu-ayu in pools was greater than in glides or riffles in each life history season [spawning (Nov. to Feb.), up stream migration (Mar. to May) and growth (Jun. to Oct.) seasons], an analysis by Spearman’s correlation coefficient by rank test indicating that such abundance in pools tended to be consistently greater in lower reaches. This suggests that large pools in lower reaches are an important habitat for Ryukyu-ayu in the Katoku River. Accordingly, for the future conservation of the lower reaches and creation of large pools may be a positive step of this endangered fish.

著者

片野 修

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.40, no.4, pp.441-449, 1994-02-15 (Released:2010-06-28)

参考文献数

21

被引用文献数

6

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京都市の二河川でカワムツとオイカワが同所的に生息し, 同種内と同様に二種間でも攻撃行動を行った.両種において大型個体は小型個体より頻繁に表層部を利用し, 種内及び種間の干渉において優位であった.カワムツとオイカワの両種とも雑食性であったが, オイカワの方がカワムツよりも付着藻類を摂食する頻度が高かった.両種の摂餌場所には大きな違いはなく, その周辺で多くの種間攻撃が起こった.両種とも攻撃的干渉と付着藻類摂餌行動の頻度との間に有意な相関関係がみとめられた.両種の個体の行動圏は多くの場合互いに重複していたが, 同種及び他種に対して縄ばりが形成されることも観察された.

著者

木村 清朗 長田 芳和

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.38, no.4, pp.425-429, 1992-02-29 (Released:2010-06-28)

参考文献数

14

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日本産バラタナゴは, 在来のニッポンバラタナゴRhodeusocellatus smithiiと中国渡来のタイリクバラタナゴR. ocellatus ocellatusに分けられていた.Acheilognatus smithiiとR. kurumeusの完模式標本を観察したところ, A. smithiiは, 体側に長い明瞭な暗色縦帯をもち, 背鰭と轡鰭の最初の主鰭条がやや強く, 分節が少ないので, バラタナゴとはいえない.R. kurumeusの形態は, ニッポンバラタナゴによく一致した.タイリクバラタナゴの日本への侵入は第二次大戦中であったので, 1900年採集のR. kurumeusの完模式標本, 副模式標本1個体, ほか10個体の標本は, すべてニッポンバラタナゴと判断された.したがって, ニッポンバラタナゴの学名としてR. ocellatus kurumeusが正しい.一方, A. smithiiは, カゼトゲタナゴR. atremiusとスイゲンゼニタナゴR. suigensisによく似るが, どちらとも判定できなかった.

著者

董 仕 谷口 順彦 石田 力三

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.46, no.2, pp.83-90, 1999-11-30 (Released:2010-06-28)

参考文献数

18

被引用文献数

2

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Loaches, Misgurnus anguillicaudatus, collected from Torentsu river, Ibaraki, Japan, were found to comprise two types based on the morphological and genetic traits. Complete substitution of alleles of the two types at the AAT-2* and GPI-1* loci were found, as well as significant differences in allele frequencies at eight other loci. The genetic distance between the two types was 0.4. The belly color was yellowish in type I and grayish in type II, and the average number of precurrent rays was 21.4 (range: 16-25) and 10.5 (range: 7-13), respectively.The results suggested that the two types should be regarded as a distinct biological species.

著者

猿渡 敏郎 望月 賢二

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.32, no.3, pp.299-304, 1985-11-28 (Released:2010-06-28)

参考文献数

3

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目本近海から得られた2個体の標本を基に新種ミノアンコウLophiodes fimbuatusを記載した.本種は体の背面と腹面両方から分枝した細長い皮弁が出ていること, illiciumに色素胞が点在していること, escaが痕跡的であること, 第三遊離背鰭鰭条に対をなす皮弁が複数存在していることから, 同属の他種から容易に区別することが出来る.

著者

石崎 大介 谷口 義則 淀 太我

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.59, no.1, pp.49-54, 2012-04-25 (Released:2014-05-16)

参考文献数

38

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Brown trout Salmo trutta, a well-known game fish, has had considerable adverse effects worldwide on native aquatic organisms in waters to which it has been introduced. Although the establishment of brown trout and its impact on native biota have been frequently reported in Japan, such reports have been primarily limited to Hokkaido. In 2008 and 2009, 11 juvenile and 6 adult brown trout, including a mature female, were captured in the Odori Stream, Jinzu River system, central Japan, a mating pair of brown trout swimming near a redd also being observed in 2009. It is now considered that the species has become established, following an accidental introduction from a local hatchery in 2004 during a severe flood indicating that future possible introductions of this species must remain a concern, even in central Japan.

著者

福所 邦彦 藤田 矢郎

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.19, no.1, pp.32-33, 1972-06-25 (Released:2010-06-28)

参考文献数

8

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In the waters of Tsushima Island, young of dogtooth tuna, Gymnosarda unicolor (Riippell) which were gathered underneath the lurelamp were captured by squid fishing boats on 25 th July, 1970.Since then, the young were caught by surface trolling and set net, and the capture continued to early January 1971.Their size increased as season went on: 24.0-27.5 cm in fork length and 200-300g in body weight in early August;36.0-39.5cm in fork length and 640-910g in body weight in late November;41.0-45.0cm in fork length and 1115-1170g in body weight in the middle of January.But they have not been caught since January of: 1971.This species had been unknown among the fishermen working around Tsushima Island. This region is outside of their distribution area previously informed by some authors. Therefore, it is highly probable that the occurrence of this species is recorded in the first time here.

著者

明仁 坂本 勝一

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:18847374)

巻号頁・発行日

vol.36, no.1, pp.100-112, 1989

被引用文献数

1

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The striped goby was characterized by having more than 50 scales in a longitudinal row and 2 black longitudinal bands from the head to the tail. It has been regarded as 1 species since Tomiyarna (1936) grouped several nominal species into one, <I>Tridentiger trigonocephalus</I> (Gill, 1858). But detailed study has revealed that it can be classified into 2 separate species, <I>T. trigonocephalus</I> and <I>Tridentiger bifasciatus</I> Steindachner, 1881, on the basis of the difference mainly in the forms of the sensory canals and pectoral fins and in the coloration. <I>T. trigonocephalus</I> has been collected from Hokkaido to Kyushu in Japan, and in Korea, China, and Hong Kong abroad. It has immigrated into both California, U.S.A., and New South Wales and Victoria, Australia. <I>T. bifasciatus</I> has been collected in the same area as <I>T. trigonocephalus</I> in Japan, and in the Soviet Union, Korea, China, and Taiwan abroad. Both species inhabit brackish and sea water with stony bottoms, and are often found in the same place. However, <I>T. trigonocephalus</I> has seldom been found in very dilute brackish water, and <I>T. bifasciatus</I> has not been found in undiluted sea water. The type specimen of <I>T. trigonocephalus</I> has not been found, but the identification to <I>T. trigonocephalus</I> was decided on the basis of the closeness of the numbers of the 2nd dorsal and anal fin rays to those of the original description, which were 14 and 13, respectively. In addition, the type specimen was collected in the port of Hong Kong, where the water is not diluted and is unlikely to be suitable as habitat for <I>T. bifasciatus</I>.

著者

白井 滋 後藤 友明 廣瀬 太郎

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.54, no.1, pp.47-58, 2007-05-25 (Released:2011-06-08)

参考文献数

19

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In February to March, 2004, 17 specimens of sail-fin sandfish, Arctoscopus japonicus, were collected off the Iwate area, Pacific coast of northern Honshu, Japan, during research on fishery resources by Iwate Fisheries Technology Center. Using all the specimens, a sequencing analysis of the mitochondrial control region was performed, and we found that they have a genetic composition closely approximating to the western Japan population distributed north of Oki Islands, the Sea of Japan. These specimens were estimated to be three years old, belonging the 2001 year-class. This year-class from the Akita coast area became a very large resource, and this may have led to the expansion of their distribution. The occurrence of sandfish off the Iwate area in 2004, should be an event through the enlargement of distribution area of the 2001 year-class that hatched along the Akita coast area.

著者

原田 慈雄 木下 泉 大美 博昭 田中 克

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.46, no.2, pp.91-99, 1999-11-30 (Released:2010-06-28)

参考文献数

20

被引用文献数

2

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To clarify the early life history of Cottus kazika (Cottidae), we examined the distribution, migration, growth and food habit of larvae and juveniles collected by various methods from the Yura estuary and neighboring waters in western Wakasa Bay from November 1993 to May 1994, and from January to June 1995. Collections using an aqualamp in the rocky shore yielded mostly yolk-saclarvae, which tended to occur synchronously with the spring tide. This tendency was supported also by the back calculation of the hatching date estimated from otolith microstructural increments. Most of the larvae and juveniles were collected in the 5 m depth areas (mean salinity about 34 ppt) with a beam trawl (from 3.5 to 30m depth). We collected no C. kazika larvae and juveniles by oblique tows of alarva net in coastal areas of 10 to 50m depth. In wading areas of the surf zone, many larvae and juveniles were collected, particularly at the lowest salinity (mean about 26 ppt) station nearest to a river mouth. Mean size of larvae and juveniles were greater in the surf zone than in the 5 m depth areas. Food habits changed with growth, and differed between habitats. Pelagic larvae fed on copepods in 5m depth areas. Settled larvae and juveniles chiefly fed on mysids in 5 m depth areas, and gammarids in the wading areas of the surf zone. Thereafter, juveniles fed on tanaidaceans and trichopteran larvae in the estuary.

著者

加畑 雅章

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.28, no.3, pp.349-352, 1981-11-30 (Released:2011-07-04)

参考文献数

17

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Shapes of the swim bladders were studied for clarifying differences in three species of the genus Tribolodon, T.hakonensis (Günther), T.taczanowskii (Steindachner) and T.ezoe Okada et Ikeda, taken from several localities in Hokkaido. The feature of the tip of the posterior chamber of the swim bladder, with two types, is useful to distinguish between T.ezoe (round or grainy tip) on the one hand and T. hakonensis and T.taczanowskii (tapering or sharp tip) on the other hand. The length of the posterior chamber of the swim bladder was also different among the three species, i.e., it is longest in T.hakonensis, shortest in T.ezoe, and intermediate in T.taczanowskii.

著者

酒井 治己 桂 和彦 小野沢 茂好

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.37, no.4, pp.424-426, 1991-02-28 (Released:2010-06-28)

参考文献数

12

著者

中尾 博行 川端 健人 藤田 建太郎 中井 克樹 沢田 裕一

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.53, no.2, pp.167-173, 2006-11-25 (Released:2010-06-28)

参考文献数

20

被引用文献数

1

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Predation of eggs and larvae of bluegill (Lepomis macrochirus), by snails (Semisulcospira spp.and Sinotaia quadrata histrica) were examined during the bluegill reproductive period (July and August) in 2003 and 2005. At a littoral study site in the northern basin of Lake Biwa, population densities of snails were significantly higher in bluegill nests than in their surroundings, indicating deliberate aggregation of the former. Laboratory experiments to assess the degree of predation on bluegill eggs and larvae by snails showed a significant decrease in egg and larval numbers when established in aquaria together with Semisulcospira spp., and Sinotaia quadrata histrica, respectively. During experimentation, predatory behavior by snails was also directly observed, indicating that snails aggregating in bluegill nests probably predate eggs and larvae despite parental care of the latter.

著者

駒田 格知

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.28, no.4, pp.437-444, 1982-02-27 (Released:2011-07-04)

参考文献数

23

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In order to establish a basis for distinguishing normal and abnormal structures, this paper reports on the growth of vertebral centra in the cyprinid fish, Zacco platypus Temminck et Schlegel.Specimens, 10.0-110.0 mm in standard length (SL), were collected from the Yahagi River, Aichi Prefecture, in August, 1978.Juvenile fish were collected from the Ibi River, Gifu Prefecture in October 1978 and in April 1979.Length and diameter of centra of the 263 specimens were measured for different growth stages, seasons and sexes.Ossification of vertebrae begins in the postlarval stage, at about 8.0 mm SL.In fish smaller than 16.0 mm SL, all centra are almost equal in length.At 24.0-26.0 mm SL, lengths of centra located at the anterior part of the caudal region are longer than those in the other regions.As the fish grow, growth rate becomes greater in the middle part of the column than the other regions.The diameters of centra in fish of 10.0-16.0 mm SL show no difference associated with the portion of centra through the vertebral column.In fish larger than 24.0 mm SL the diameter of centra located at the anterior part of the column and around the transitional area between the abdominal and caudal region is larger than those in the other regions.In the adult stage, there are no sexual differences in the length and the diameter of centra.The proportions of vertebral column length to standard length in specimens of 10.0-16.0 mm SL are significantly smaller than those in specimens above 24.0 mm SL.And, there are significant differences on the ratios of total length of centra to column length between the three size-groups, 10.0-11.0 mm SL, 15.0-26.0 mm SL and above 60.0 mm SL (t-test, P<0.001).The lengths of centra in juvenile fish (15.0-16.0 mm SL, 19.0-20.0 mm SL) collected in April are larger than those in October and August, but the diameters of centra in the former are smaller than those in the latter two months.There is no difference in the length and the diameter of centra between juvenile fish in August and those in October.The ratios of spinal column length to standard length of juvenile fish in April are significantly larger than those in August and in October (t-test, P<0.001).

著者

加藤 文男

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.21, no.4, pp.191-197, 1975-03-15 (Released:2011-02-23)

参考文献数

33

被引用文献数

2

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It was concluded that the salmonid fish found in Ise Bay, the Inland Sea, Tokai district, Kinki district, and Shikoku district (Figs.1-2, Table 1) is the sea-run form of“Amago”, Oncorhynchus rhodurus Jordan and McGregor which is widely distributed in the freshwater of southwestern Japan.It was shown that the sea-run form is morphologically different from the salmonid fish“Biwamasu”in Biwa Lake which has been considered to be conspecific with O.rhodurus.