Histological changes in the organs and tissues of the gobiid fishes throughout the life-span-2 The hypophyseal target organs of the ice-goby, Leucopsarion petersii Hilgendorf
Histological changes in the organs and tissues of the gobiid fishes throughout the life-span-2 The hypophyseal target organs of the ice-goby, Leucopsarion petersii Hilgendorf
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虾虎鱼整个生命周期内器官和组织的组织学变化-2 冰虾虎鱼 (Leucopsarion petersii Hilgendorf) 的垂体靶器官
DOI：
10.11369/jji1950.17.29
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发表时间：
1970
期刊：
影响因子：
--
通讯作者：
Y. Honma
中科院分区：
文献类型：
--
作者：
E. Tamura;Y. Honma
Tamura和Honma在其栖息地从海水到溪流产卵场的特定阶段收集材料，追踪了一种小型虾虎鱼（Leucopsarion petersi）下丘脑-垂体神经分泌系统的组织学变化。本研究的目的是扩大对其年生活方式特别是生殖生理的认识，论述了沿着它们在甲状腺、肾间腺、甲状腺是垂体靶器官之一，在海洋生活中甲状腺无活性;在洄游季节初期，上游河流中的活性较高，随着季节的推移，活性逐渐降低，最后一次洄游的河流中活性最低;所有这些事实都表明该器官与渗透调节功能无关。产卵地两种性别的甲状腺活性均达到最高但雌鱼的性腺活力仍高于雄鱼，雌鱼的性腺活力衰竭更快。产卵场的肾间腺有轻微退化的迹象。卵巢卵属于同步型，在上升洄游到产卵场的过程中发育迅速。卵巢衰竭后出现许多排卵疤痕，结果表明，该种鱼的睾丸呈管状，无输精管等附属腺，精子发育不同步，在到达产卵场时达到高峰，在生殖活动后死亡的鱼睾丸腔内发现有大量残存精子，在生殖活动后死亡的鱼睾丸腔中发现有大量残存精子。如Tamura and Honma（1969）所述，日本列岛沿岸的一年生鱼类冰虾虎鱼，春季在河流中产卵，一次产卵后数日死亡，孵化后的幼虫数日后从河流中顺流而下入海。这种小虾虎鱼在海中的生活史至今还不清楚，但Yabe（1940）对它在朝鲜河口繁殖前后的行为进行了描述。根据北原（1904）的说法，这种虾虎鱼具有明显的两性异形，生活在海洋浅水区，在清澈的溪流中产卵。但这种鱼从不溯流而上，只停留在离河口五六公里的地方。它的卵会沉积在相对较远的地方。在沙子和鹅卵石中燃烧的大石头。Robertson和Wexler（1959，1960，1962）、Robertson et al.（1961）、本间（1959，1960，1968）、本间和铃木（1968）以及本间和田村（1963，1965，1968）。Honma（1966）还描述了取自海中的成熟降河产卵鳗鱼的器官在组织学上的显著变化。
Previously,Tamura and Honma traced the changes occurred in the histology of the hypothalamo-hypophyseal neurosecretory system of a small goby,Leucopsarion petersi,based on the materials collected in selected stages of their habitat from sea water to spawning ground in streams.The present study,with objectives to expand knowledge as to their mode of annual life especially on reproduction physiology,deals with histological changes traced along their migratory and reproductive activities in the thyroid,interrenal gland(adrenal cortical tissue)and gonads among the target organs of hypophysis.The thyroid appeared inactive in the fish in their sea life; its activity grew higher in those ascending stream in early season of their migration,and it lowered as season proceeded and showed the minimum in the latest migrants; all these facts suggested that the organ is not concerned with osmoregulatory function.The thyroid activity reached highest on two sexes at the spawning site though that of females still surpassed that of males and,as expected,the exhaustion of the gland activity was more accelerated in females.The interrenal gland showed a slight indication of regressive degeneration in the fish at the spawning site.The ovarian eggs, categorized synchronous,developed rapidly during the course of their ascending migration to the spawning ground.The spent ovary showed a number of ovulation scars,but ultimate corpus luteum was not found even in the fishes just died.The tubular testis of the present species lacks accessory gland such as seminal duct.The development of spermatozoa,asynchronous,reached the maximum in the fish arriving spawning site.The so-called relict spermatozoa were found in a considerable amount remaining in testicular lumen of the fish died after reproductive activity. Introduction As stated in Tamura and Honma(1969), the ice-goby,an annual fish dwelling entire coast of Japanese Islands,ascends the stream for spawning in spring,and dies several days after a single spawning.The hatched larva descends the river to the sea in a few days. The life-history of this small goby in the sea has not been known up to the present time, but Yabe(1940)made an account of its behavior before and after the breeding in the estuaries of Korea.According to Kitahara(1904),this goby having an obvious sexual dimorphism lives in the shallow water of the sea,and enters clear streams with gravelly bottom where the fish spawns.But the fish never goes up the stream to a great distance and remains within 5 or 6 km of the mouth of a river.And its eggs are deposited on relatively larger stones burned in sands and pebbles. The histological changes found in some of the organs and tissues accompanying sexual maturation and senility of the salmon and salmon-like fishes have been extensively investigated by Robertson and Wexler(1959, 1960,1962),Robertson et al.(1961),Honma (1959,1960,1968),Honma and Suzuki(1968) and Honma and Tamura(1963,1965,1968). Honma(1966)also described a histologically pronounced changes in the organs of the mature catadromous eels taken from the