1 0 0 0 OA クロシビの稚魚に寄生する「ペンネラ」
1 0 0 0 OA 鮒に寄生する「レルネオセラ」
1 0 0 0 OA 琵琶湖産のIchthyoxenusに就て : 第二十八巻第一版附
1 0 0 0 OA 河鱒のKyphoskolioseに就て
1 0 0 0 OA メカヂキの「ペンネラ」
1 0 0 0 OA 攀樹性のヤウジウヲ(其一)
1 0 0 0 OA 手術せる鰻の角膜清澄す
1 0 0 0 OA 粘菌の細胞周期に伴う細胞内pHの変動(細胞学)
1 0 0 0 OA 阿寒湖より移植せられたる姫鱒の現状
- 著者
- 青柳 兵司
- 出版者
- 日本動物学会
- 雑誌
- 動物学雑誌 (ISSN:00445118)
- 巻号頁・発行日
- vol.61, no.8, pp.233-236, 1952-08
- 被引用文献数
- 2
I inclucle here all the fishes belonging to the families, Gobiesocidae, Limnichthidae, Parapercidae, Brotulidae, Bothidae and Soleidae, which are hitherto known from the coral reefs of the Riukiu Islands. These fishes contain fifteen species, including one new species, four of which are the additional species to the ichthyofauna of both Japan and the Riu-kiu Islands, as fllows: Limnichtlhys fasciatus WAITE Parapercis cylindrica (BLOCH) Monothrix polylepis OGILBY Dinematichthys riukiucnsis n. sp. Dinematichthys rinkiuensis n. sp. Total length 101.7mm; standard length 90.3mm. Depth 4.1 in length; head 3.5. Snout 4.1 in head; eye 9.3; interorbital space 3.2; depth of caudal peduncle 6.3; maxillary 2. D. 77; A. 61; V. 1. Scales in longitudinal series 127. Body cylindrical anteriorly, strongly compressed posteriorly; snout short, obtuse; maxillary extending backward for beyond hind margin of eye; eye exceedingly small, 2.8 in interorbital space; opercle with one short spine; tongue somewhat pointed; dorsal and anal not connected with caudal; caudal 10.9 in length, rounded; ventral close together, 4.2 in length, inserted on throat just before base of pectoral, but not reaching to anus; small, well-inbricated, cycloid scales covering body entirely; predorsal scales extending forward to above hind margin of preopercle; cheek covered with minute cycloid scales posteriorly; opercle, infraorbital and snout naked; jaws, vomers and palatines with bands of minute spine-like teeth. Color in formalin pale brown generally; fins pale. This new species closely resembles GUENTHER'S D. mizolepis. It is, however, distinguishable from the latter in having smaller eyes, a smaller number of dorsal rays and a large number of scales in the longitudinal series. I obtained one specimen, 101.7mm in length, at Ishigaki Island and eight specimens, 51.4mm to 83mm in length, at Okinawa-Honto. The above description was based upon the specimen collected at Ishigaki Island.
1 0 0 0 電気刺激に対するマガキ心筋の応答
- 著者
- 江原 有信 佐藤 利夫
- 出版者
- 日本動物学会
- 雑誌
- 動物学雑誌 (ISSN:00445118)
- 巻号頁・発行日
- vol.80, no.10, pp.358-363, 1971-10
Square pulse (17.5 V, 50 msec) was applied to oyster ventricle which had been isolated and mounted on a separation box. Myocardial activity was intracellularly recorded by means of microelectrode filled with 3 M KCl. Electric stimulation of threshold strength affected the beat interval as follows: Length of beat interval was changed by the simulation applied even during repolarization phase which corresponded to so-called refractory period. Depolarizing current did not always produce an extra action potential, and sometimes delayed the production of succeeding spontaneous action potential according to stimulating moment (Fig. 1). Hyperpolarizing current did not always elongate the interval, and often evoked an extra action potential as the result of rebound excitation th shorten the interval. Compensatory pause could not be found in these experiments. The change in length of the beat interval caused by the stimulation applied before the critical point (Fig. 2) had an opposite relation against that applied after it. The change in the beat interval caused by depolarizing current differed markedly from that produced by hyperpolarizing current. The effect of depolarizing stimulation was essentially similar to that of small potential (Ebara, 1964b) which conceivably had an important role in rhythm formation of the whole ventricle.
- 著者
- 長谷川 和
- 出版者
- 日本動物学会
- 雑誌
- 動物学雑誌 (ISSN:00445118)
- 巻号頁・発行日
- vol.62, no.6, pp.206-211, 1953-06
By heat-treatment (for 5-40 minutes at 25-34℃) of fertilized eggs of the toads, Bufo vulgaris formosus (Boulenger), four double-headed tadpoles, which lived more than 30 days, were obtained. Generally in the head portions of these animals the organs were formed doubly, while in the tail portions singly; and intermediate forms of the two portions were recognized in the trunk portions. It may be considered that these animals were produced by the division of the direction of primary invagination.
1 0 0 0 OA 日本産普通多足類の後胚発生XXI. : タメトモヤスデ科の1新属とクビヤスデ科の1新種
1. Dimorphodesmus, gen. nov. Related to Eucondylodesmus and Kylindogaster but is distinguished from these genera by the number of body segments, the shape of tubercles on the metatergites, and in having a modification on the anal segment of the abult male. In number of body segments it is near Doratodesmus (Jeekel, 1955) but differs in that the metatergites are without mid-dorsal processes. Body composed of 19 segments in the male and 20 in the female. The segments with low and rounded tubercles, which are arranged in 2 series on each of most metatergites. In the adult male the posterior margin of the anal seegment is modified in a peak-shape. The structure of male gonopods are clear. Telopodit distad of prefemur is broadened and lamellate, the femur with a process on the distal side, and tibiotarsus with some acute processes. Type species: Dimorphodesmus peculiaris, sp. nov. Dimorphodesmus peculiaris sp. nov. General color pale brown, the antennae whitish. Length about 4 mm in male, 5 mm in female. Head and antennae are very similar to those of Eucondylodesmus. Collum is subtrapezoid, narrower than the next segment, the upper irregularly granulate, and lateral angle areas conspicuously tuberculate. The second tergite is flattend and narrow at the middle dorsum, with three series of tubercles laterally. The keels are greatly enlarged and with 4 large, unequal scutellated tubercles. Third and fourth deels are simple and anterior margin serrulated. The succeeding keels are moderately enlarged, but the penult keels are conspicuously reduced in adult male. All keels with a incision on each of the posterior margin, and lateral ends of typical keels indistinctly 2-1obed. Repugunatorial pores open on the central tubercles of the keels of segments 5, 7, 10, 12, 13 and 15-18 (19 in female). Anal tergite of female is triangular and with tubercles. In adult male it is steep dome-shaped, smooth and with a post-marginal L-shaped peak in. The peak is as illustrated in figures 1 and 2. Gonopods as figured (Fig. 1, I-K). The femoral process shows some minute individual variations in length and shape, and seminal groove runs in the base of the process. Holotype: 1♂ (4.2 mm in Length); Allotype: 1♀ (5.0 mm in Length); Other specimens 7 ♂, 12♀. All the types collected by the author. Type locality: Oshima, Niihama, Ehime Pref. Through May 1964. Other record: Kinsha, Iyo-Mishima, Ehime Pref. May 17, 1963. Types are preserved in the author's collection. 2. Archandrodesmus kumamotensis, sp. nov. This species is distinguished from the related A. japanicus by the details of the male gonopods. Colour in life cinnabar-red. Length about 5 mm in male, 5.5 mm in female. Somatic characters are as described for A. japonicus, but without nodules of tarsal setae on the last two pairs of legs. Male gonopod is small, granulated, with two prefemoral branches, a leaf-shaped tibiotarsus and a ligulate branch. Figure 3 shows a different view of the left gonopod. Holotype: 1♀ (5 mm in Length); Allotype 1♀ (about 5.5 mm in Length). 7 other specimens. All types are collected by the author. Type locality: The remins of Kumamoto Castle, Kumamoto Pref., Aug. 10, 1964. Types are preserved in the author's collection.