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Title a Contribution to the Biology of the Black Rockfish : Sebastes

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Title a Contribution to the Biology of the Black Rockfish : Sebastes A contribution to the biology of the black rockfish : Sebastes Title inermis Cuvier et Valenciennes( Dissertation_全文 ) Author(s) Harada, Eiji Citation Kyoto University (京都大学) Issue Date 1963-03-23 URL http://dx.doi.org/10.14989/86534 Right Type Thesis or Dissertation Textversion author Kyoto University /?, 0 0 1 m 0 Z W 0 I- 1- (4 t7 A Gouuhe"Xi-tsicre .t .-secoAyi An4 I. SJeIstes. tnetm,r el^/ER et yALENC/ENNE3 ( /CA/l' /:71( ) 7'u4c.a tiaessJ'04 Mah; a ,O.do~c ay.~ .c ~ , I~oL /0, No.2 (1962) /I C*->t to 1. /ICl ,(1,-,t3 Ar °1 * L 45&0-1/fr aP*1 -tf, b'4.g k ,t. / On-4f , (/91--1-) eA09Z. 7Xeaxiom/ Cowroftez.ce.rces„at -au .au.~.r c.ed Arcatiitl f"'~"" L e - ,t'oyc6. ( * 4 11:1 iS4 i* ) G^ t • ,Ou1QeZvnofiIaii*e ~3~ -~~a.e c~•~~-t,sn o LAsa ma-did; Thrke.. , ^/re.9, Ale.4 , t9). f4 3 . A stu,* zikep,rd1o~,t~?tr.I ~'ceax° aj CCco,cal. / f 4 Q 7asz24geear. ( t41P5*-a^e& li ,it1 3. 4"fkP 1. 11L.4 j . 9j-L (' ci .i1 f ) ( /OF 4- 'pi t 7/6 L k4-) 4 /VerrarddI eixaaoratpL.o latu41, Aka, J'erres, de. 2' (/ 9t d') . 1'l0)4 . A.r, p' Lr ZjeTa.~d&. ,da3, Pad-tI. s- 1Py4g0-74'441It/ et3; 7 . "/k6 glie4r 44-4 t 47V7 C4fr-f4rZia, 1/,6L 4) %'7fti ?Fee-or-do144 ade- 74, iiorkdat/14.24.t J .n/o. z -/9..t1'). A .atc ~,, o~d~ - Ta4vezale. r Pa."-t" . accutyenue.r c .dt .€: ` file°t --ewcoxic ~~~barucu~ ~vak' JfEl OL.D) ra4.t.V& Nay. lglY://l~lclc3ivllas^ Tee0yde Li/e-eawr ie,4:c l~o4a..., n/ Jerzee, J'pee 2L A/.. 3 (.t9). 'Zo~~ . A .dci`ud, 47a•cae ,Q. 74,01'17.. G-dea..towr co,.edc•1-Tw.P e (3). .~c l~t of (3). f9se,v f m1 4 % ) (iroo-ep ft) tipze,a A/o.4/ C/16 ) • 2'. t—c017:ced 0-rt_zieja16,2,,Led.€ Pa4ea- &1,t! fQ 07LGCLLo6/01v .fIe5O4.„P) , ,t.ZQ4,,tralQ.tdf fe . B ^W. 4, A/o.1 091-7). a) oQ Alated ox Z. a..4.0(nu~y„Z«.Z/CCeoaoma AlSi EBtl•~~~•GdGat(y/O/ofp) •O /-7 "/4"'/rt /Li't ' PLae, ca4one o1 4e J'eto illar/.0 /3:o-lrca ./ Zah„-a /7. ^oQ 7, n/o. J (,9-t P) 9. Ped~Giucitio~ a h d ,/~~ t~~a~r.v <~fua. .cet c ~a ) pa)sc /l/ea, 6ia./edc, z . <=2- p ) Vol. 9, A/o. 1 (t9. / ). ~la^ (4 . On-cif4//a.~cce - ) Lrorciafan . Put1-G-,-..a, a ^o~ /o, ((912). A CONTRIBUTICPJ TO `t'hE BIOLOGY C P ThE BLACK ROCKFISH, S::BASTAS INERN:IS CUVI::R VAL. NCIENNES EijiHARADA Department of Zoology, University of Kyoto A CONTRIBUTION TO THE BIOLOGY OF THE BLACK ROCKFISH, SEBASTJS INERMIa CUVIERET VALENCIANNA 1) Eiji HARADA Department of Zoology. University of Kyoto With 22 Textfigures and 3 Tables Introduction Evidence has been established that certain fishes, when they are young, occur in the Zostera belt in considerable number and mostly disappear from there as they grow (Ohehima, 1954; Fuse et al., 1956; Fuse et al., 1959; Hatanaka and Iizuka, 1962a,b,c; Fuse, 1962a,b). The most notable of them are . Lateolabrax ,japonicus, Hexagrammos otakii, Agrammus agrammus, Sebastes inermis, and Sebastes oblongus. Their colonization and emigration concur generally with the increase and decrease of small phytal animals in the Zostera belt, and they are supposed to aggregate there to feed on these small animals on Zostera as well as to be sheltered and protected from the enemies. It has tt°JTNbeen point- ed out that some of them are inhabitinrr ow other areas as well, and .;abastes inermis, for instance, is quite abundant in the rocky area (Hatanaka and Iizuka, 1962b), occupying it from the younger on to the adult stage (Fuse, 1962b). Obviously these two areas or major hatitats are utilil,ed by a fish .ebastes inermis equally at a certain time ,.nc differently at other. In other word, in the manner in which the fish lives changes occur, with which, together with that of other organisms, its relations with other beings and the significance of a community to its life is varying. Although there are accumulations of detailed knowledge and information concerning various aspects of life of fish lnd of the community it belongs to, ,.s 1) Contributions from the Seto Marine Biological Laboratory, No. 794. Publ. Seto Mar. Biol. Lab., X (2), 1962. (Article 17) - 1 - there has still little research on the life history of fish from the develop- mental and synecological points of view. Important aspects of ecology of a fish, for instance, distribution, migration or food, are treated rather sepa- rately from phases of its life history and its surrounding biotic communities. If the changes in life of a fish and its diversity, say the habitats of Sebastes inermis, are closely connected with the development of phases of life history and the transformation of surrounding communities, this might necessitate to observe the way of living at each particular epoch in relation to the process of life history and the interrelationships within a community. This, in turn, would postulate that elucidation of life histories of consti- tuent organisms is one of the primary requisites for an understanding of the dynamics and structure of a living community, though the community approach is certainly valuable in obtaining the general picture of a whole community. On the basis of the results of the survey on the Zostera and Sargassum belts, obtained so far through collaboration of the group of participators, the present investigation has been directed towards an understanding of eco- logy and life history of Sebastes inermis by piecing morphological changes and reciprocal interaction in the community at each stage of life together_ Particularly the larval and juvenile life have been paid much attention. The black rockfish, or "Ntebaru" in Japanese, Sebastes inermis Cuvier et Valenciennes, is a member of the family Scorpaenidae, which comprises under the present system of rommclature 8 :ubf-.milies and 21 genera in Japan. This species has been sometimes placec in the genus Sebastodes Gill, which has been regarded distinct from the genera Sebastichthys Gill and Sebastes Cuvier. However, Matsubara (1943) made a comprehensive anatomical and taxo- nomical study of the scorpaenoid fish3s and consolidated the two Pacific genera Sebastodes and Sebastichthys into the Atlantic genus Sebastes. Practically little has been known concerning the whole progression of life of Sebastes inermis. Histological observations on maturation and repro- duction cycle of the species have been reported in detail by Iizue (1957, - 2 - 1958a,b, 1959a,b,c) and Mio (1960, 1961). Hatanaka and Iizuka (1962c) have studied growth and food of the species in captivity. The descriptions on morphology of the larval and juvenile stages are briefly given by Nakamura (1934) and Uchida (1943). As to ecology of the species, the fragmentary accounts have been published by Ohshima (1954), Fuse at al. (1956), Kitamori and Kobayashi (1958), Kitamori, Nagata and Kobayashi (1959), Fuse et al. (1959), Kikuchi (1961), Hatanaka and Iizuka (1962a,b,c) and Fuse (1964,12). Few are, however, available particularly on ecology of the larvae and juvenile. Other members of the genus Sebastes in Japan have been paid little atten- tion, save the subsidiary informations from the studies of the communities in various areas. Descriptions of the larvae and juvenile have been presented for Sebastes schlegeli Hilgendorf and Sebastes pachycephalus pachycephalus Temminck et Schlegel by Inaba (1931), for Sebastes pachycephalus nigricans (Schmidt) by Fujita (1957), for Sebastes hubbsi (Matsubara) by Nakamura (1936) and Shojima (1958), and for Sebastes pachycephalus pachycephalus by Siokawa and Tsukahara (1961). In the North Atlantic and 4uropean areas, Templeman (1959) has investigated the distributions of Sebastes marinus, comprising two subspecies, and Sebastes viviparus, and Vining (1949) has shown the wide ex- tension of breeding area of Sebastes marinus. Lambert (1960) has described the variations in food of Sebastes marinus. The larvae of Sebastes in the North Atlantic has been the object of the intensive survey, and Steele (1957), .:inarsson (1960), Henderson (1961a,b), Hansen and Andersen (1961), etc., have reported on the distribution and abundance of the larvae and juvenile of Sebastes marinus. Cther species have been referred very little. Acknowledgements I am deeply indebted to Professor D. ?liyadi and Professor S. Idori for their encouragements and advices given to me during the course of the study, and to Dr. T. Habe, now at the National Science 1;useum, Dr. S. Fuse of the Seto Marine Biological Laboratory, Dr. T. Mliura, now at the Otsu Hydrobiolo- -3- gical Station, and Mr. R. Okuno, now at the Suma Aquarium of Kobe City, for their helpful suggestions and co-operation in the field. I am also indebted to Dr. A. Murakami, Mr. A. Inoue, Mr. S. Nishina and Mr. S. Takamori of the Naikai Regional Fisheries Research Laboratory, and to my colleagues at the Department for the assistance in collecting materials. My thanks are also due to Professor H. Utinomi, Dr. T. Tokioka and Dr. I. Yamazi of the Seto Marine Biological Laboratory, Dr. K. Nagata of the Naikai Regional Fisheries Research Laboratory and Mr. S. Takamatsu of our Department, in connexion with taxonomy of various groups of animals. Most of the materials dealt with in the present paper were obtained during the survey of the Zostera and Saraassum belts in the Kasaoka Bay, financed by a grant-in-aid from the Fisheries Agency of the Ministry of Agri- culture, and during the survey of the fisheries and marine food animals and seaweeds in the Naka-no-umi District at the request of the Shimane Prefectural Government, which are gratefully acknowledged.
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