3 0 0 0 OA 博多湾の底生群集におけるシャコの食性
- 著者
- 濱野 龍夫 松浦 修平
- 出版者
- 公益社団法人 日本水産学会
- 雑誌
- 日本水産学会誌 (ISSN:00215392)
- 巻号頁・発行日
- vol.52, no.5, pp.787-794, 1986-05-25 (Released:2008-02-29)
- 参考文献数
- 18
- 被引用文献数
- 9 11
Examination of the stomach contents of the Japanese mantis shrimp Oratosguilla oratoria showed that this species is a very intensive predator on the Macrura which is a principal component of the benthic megalofaunal community. Thus, the mantis shrimp, by feeding largely on the Macrura, may have a major influence on this community structure in Hakata Bay. The shrimp was also revealed to be an intensive predator on the Pelecypoda despite underestimation of preda-tion intensity, based on the stomach contents, because of its shell-smashing behaviour. Further-more, this study showed that many Macrura were captured during September and November by the mantis shrimp and that female shrimp of reproductive sizes also consume many Pelecypoda, As a prey species, mantis shrimp themselves were found infrequently in the digestive tracts of other predators.
1 0 0 0 博多湾の底生群集におけるシャコの食性
- 著者
- 濱野 龍夫 松浦 修平
- 出版者
- 日本水産學會
- 雑誌
- 日本水産学会誌 (ISSN:00215392)
- 巻号頁・発行日
- vol.52, no.5, pp.787-794, 1986
- 被引用文献数
- 3 11
Examination of the stomach contents of the Japanese mantis shrimp <i>Oratosguilla oratoria</i> showed that this species is a very intensive predator on the Macrura which is a principal component of the benthic megalofaunal community. Thus, the mantis shrimp, by feeding largely on the Macrura, may have a major influence on this community structure in Hakata Bay. The shrimp was also revealed to be an intensive predator on the Pelecypoda despite underestimation of preda-tion intensity, based on the stomach contents, because of its shell-smashing behaviour. Further-more, this study showed that many Macrura were captured during September and November by the mantis shrimp and that female shrimp of reproductive sizes also consume many Pelecypoda, As a prey species, mantis shrimp themselves were found infrequently in the digestive tracts of other predators.
1 0 0 0 OA サワガニの成長
1 0 0 0 OA モクズガニの未成体期における鉗脚の相対成長
- 著者
- 小林 哲 松浦 修平
- 出版者
- 日本甲殻類学会
- 雑誌
- Crustacean research (ISSN:02873478)
- 巻号頁・発行日
- no.25, pp.1-6, 1996-12-20
モクズガニEriocheir japonicaの未成体期(甲幅40mm未満)における鉗脚の相対成長を,飼育条件下で明らかにした.甲幅と鉗脚長節高の関係により,雌雄とも甲幅11mm付近の変曲点により分けられる2つのPhaseの存在が示された.回帰直線には雌雄ともphase間に有意差が認められ,また第1Phaseに有意な雌雄差が無いのに対し第2Phaseでは雌雄差が認められた.さらに,より大型個体での結果を加えることで,モクズガニの全サイズにわたる鉗脚の相対成長様式を推定した.雌雄差の無い1つのPhaseのあとに,雌雄差の拡大するPhaseが,さらに雄では3つ,雌では2つのPhaseに分かれて続くことが明らかになった.