Comparative Studies of the Genus Echinometra from Okinawa and Mauritius
スポンサーリンク
概要
- 論文の詳細を見る
Okinawan sea urchins, the genus Echinometra, are four independent species. But which species are the same species as E. mathaei and E. oblonga as described by Blainville 1825 is still open to question. To answer this question, a field survey of genus Echinometra was made in Mauritius(the type locality of E. mathaei)according to the characteristics used to classify Okinawan Echinometra : appearance, pore pairs, spicules in gonads and tubefeet, sperm shape, and distribution on a reef. The results of crossfertilization between Echinometra from Mauritius and Okinawa are also reported. Mauritian Echinometra are classified into three groups which resemble Okinawan Echinometra sp. B, D, and violet spine color Echinometra. The latter has almost the same characteristics as Okinawan Echinometra sp. B but with violet spines, a spine color not found in Okinawa. In cross-fertilization experiments, the sperm of Mauritian Echinometra sp. B-like and violet Echinometra fertilized Okinawan Echinometra sp. B with almost 100% success. However, fertilization was unsuccessful with other Okinawan Echinometra species. Therefore, it could be said that Okinawan Echinometra sp. B is the same as Mauritian Echinometra sp. B-like, and the counterparts of Okinawan Echinometra sp. A and C are not distributed in Mauritius. The descriptions of E. mathaei most match Mauritian Echinometra sp. B-like and the type locality of E. mathaei is Mauritius. Thus, it is probable that Mauritian Echinometra sp. B-like is E. mathaei. Therefore, Okinawan Echinometra sp. B, which most resembles Mauritian Echinometra sp. B-like, would be also E. mathaei. Echinometra sp. A and C would be considered to be new species. Echinometra sp. D is thought to be the same species as Mauritian black Echinometra. Whether Okinawan Echinometra sp. D is the same as E. oblonga remains as a problem for future research. Because the type locality of E. oblonga is not known and, it is suggested that the E. oblonga described in the Indo-West Pacific is a complex species.
- 社団法人日本動物学会の論文
著者
-
Uehara Tsuyoshi
Department of Marine and Environmental Sciences, Graduate School of Engineering and Science, Univers
-
Uehara T
Department Of Chemistry Biology And Marine Science University Of Ryukyus
-
Uehara Tsuyoshi
Department Of Chemistry Biology And Marine Science University Of The Ryukyus
-
Arakaki Yuji
Department of Tourism, Meio University
-
Fagoonee Indur
Department of Biological Sciences, University of Mauritius
-
Arakaki Y
Meio Univ. Okinawa Jpn
-
Arakaki Yuji
Department Of Tourism Meio University
-
Fagoonee Indur
Department Of Biological Sciences University Of Mauritius
関連論文
- REPRODUCTION AND LARVAL DEVELOPMENT OF BROODING FEATHER STAR, ANTEDONIDAE GEN. SP. FROM THE OKINAWAN CORAL REEF(Behavior Biology and Ecology,Abstracts of papers presented at the 76^ Annual Meeting of the Zoological Society of Japan)
- INTERACTION BETWEEN EGGS AND SPERMATOZOA AMONG FOUR CLOSELY RELATED SPECIES OF SEA URCHINS (GENUS ECHINOMETRA) IN OKINAWA(Developmental Biology,Abstracts of papers presented at the 74^ Annual Meeting of the Zoological Society of Japan)
- Comparative Studies on the Energy Metabolism in Spermatozoa of Four Closely Related Species of Sea Urchins (Genus Echinometra) in Okinawa(Biochemistry)
- On p-adic Continuous Functions Determined by the Euler Numbers
- On Some Congruences for Generalized Bernoulli Numbers
- LARVAL DEVELOPMENT OF AN ANTEDONID COMATULID, DOROMETRA SP(Developmental Biology,Abstracts of papers presented at the 74^ Annual Meeting of the Zoological Society of Japan)
- Comparative Studies of the Genus Echinometra from Okinawa and Mauritius
- Morphological Comparison of Black Echinometra Individuals among Those in the Indo-West Pacific(Taxonomy)
- Fermat's Conjecture and Bernoulli Numbers
- BERNOULLI NUMBERS IN REAL QUADRATIC FIELDS (A REMARK ON A WORK OF H. LANG)
- IMPROVEMENT OF MYOCARDIAL Ischemia IN JEOPARDIZED AREA WITH A REMOTE AC BYPASS GRAFT EVALUATED BY STRESS MYOCARDIAL SCINTIGRAPHY : Radioisotope : PROCEEDINGS OF THE 50th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
- On cyclotomic units connected with p-adic characters
- On the first generalized Bernoulli number
- -0034-123-I META-IODOBENZYLGUANIDINE(MIBG) CARDIAC IMAGING IN PATIENTS WITH IDIOPATHIC DILATED CARDIOMYOPATHY
- STUDY FOR DIAGNOSIS OF MYOCARDIAL INFARCTION BY MYOCARDIAL SCINTIGRAPHY (LONG-AXIAL AND SHORT-AXIAL TOMOGRAMS) USING RCT : STUDY OF PHANTOM EXPERIMENTS AND COMPARISON WITH CONVENTIONAL METHOD : Radio Isotope : 46th Annual Scientific Meeting, Japanese Circ
- COMPARATIVE LARVAL SKELETAL DEVELOPMENT OF DIADEMA SETOSUM. STOMOPNEUSTES VARTOLARIS. AND ECHINOMETRA MATHAEI.(Taxonomy and Systematics)(Proceedings of the Sixty-Second Annual Meeting of the Zoological Society of Japan)
- ON THE FENG-RAO BOUND FOR THE MINIMUM DISTANCE OF CERTAIN ALGEBRAIC GEOMETRY CODES