Shogo Takami, Haruka Yashiki, Takuya Yahagi, K. Sakuma, H. Itoh, Y. Ueda, S. Kojima
{"title":"Quantitative evaluation of color morphotypes in a deep-sea snailfish, Careproctus trachysoma in the Japan Sea and their genetic and environmental backgrounds","authors":"Shogo Takami, Haruka Yashiki, Takuya Yahagi, K. Sakuma, H. Itoh, Y. Ueda, S. Kojima","doi":"10.3800/pbr.17.76","DOIUrl":"https://doi.org/10.3800/pbr.17.76","url":null,"abstract":"","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45535508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The response of bacterial communities to organic matter in the surface sediment of the Pearl River estuary","authors":"Tingting Zhang, Peng Wang","doi":"10.3800/pbr.17.45","DOIUrl":"https://doi.org/10.3800/pbr.17.45","url":null,"abstract":"","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43886000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: Four mantis shrimp species are recorded from the Ryukyu and Ogasawara islands, southern Japan: Gonodactylaceus ternatensis (De Man, 1902) (Gonodactylidae); Lysiosquilloides siamensis (Naiyanetr, 1980) (Lysiosquil-lidae); Alimopsoides tuberculatus Moosa, 1991 (Squillidae); and Busquilla plantei Manning, 1978 (Squillidae). This is the first specimen-based record of G. ternatensis and the first distributional records of the latter three species from Japan. The genus Lysiosquilloides Manning, 1977 is recorded for the first time from Japanese waters, and the genus Alimopsoides Moosa, 1991 is newly found from the northern hemisphere. Diagnoses, taxonomic remarks, ecological notes and new standard Japanese names are provided.
{"title":"Records of four mantis shrimp species (Crustacea: Stomatopoda) from the Ryukyu and Ogasawara islands, Japan","authors":"Hiroki Nakajima, Ryuta Yoshida, T. Naruse","doi":"10.3800/pbr.17.34","DOIUrl":"https://doi.org/10.3800/pbr.17.34","url":null,"abstract":": Four mantis shrimp species are recorded from the Ryukyu and Ogasawara islands, southern Japan: Gonodactylaceus ternatensis (De Man, 1902) (Gonodactylidae); Lysiosquilloides siamensis (Naiyanetr, 1980) (Lysiosquil-lidae); Alimopsoides tuberculatus Moosa, 1991 (Squillidae); and Busquilla plantei Manning, 1978 (Squillidae). This is the first specimen-based record of G. ternatensis and the first distributional records of the latter three species from Japan. The genus Lysiosquilloides Manning, 1977 is recorded for the first time from Japanese waters, and the genus Alimopsoides Moosa, 1991 is newly found from the northern hemisphere. Diagnoses, taxonomic remarks, ecological notes and new standard Japanese names are provided.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47410653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Seasonal and annual dynamics of phytoplankton off Tajima, southwestern Sea of Japan","authors":"T. Nishikawa, K. Harada, Tsuyoshi Watanabe","doi":"10.3800/pbr.17.83","DOIUrl":"https://doi.org/10.3800/pbr.17.83","url":null,"abstract":"","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44464384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Teramura, H. Kohno, H. Senou, K. Kikuchi, S. Hirase, Taiga Kunishima
{"title":"A preliminary deep-sea fish fauna list with new and northernmost records, in the continental shelf to the upper continental slope in the east Enshu-nada Sea, central Japan","authors":"A. Teramura, H. Kohno, H. Senou, K. Kikuchi, S. Hirase, Taiga Kunishima","doi":"10.3800/pbr.17.95","DOIUrl":"https://doi.org/10.3800/pbr.17.95","url":null,"abstract":"","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42186321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Orita, Tomohiro Komorita, Mutsuo Ichinomiya, H. Tsutsumi
: Hypoxia-tolerant bivalve populations could be a key component of ecosystem function because of their predominance in hypoxic environments. In this study, we conducted field surveys at two sites to elucidate the biologi cal traits of the hypoxia-tolerant bivalve Veremolpa micra . We detected new settlements at both sites during summer. More highly reduced conditions in the surface sediment were recorded at Site-A than at Site-B in August 2013. Following this hypoxic event, shell growth of V. micra at Site-A decelerated, whereas that at Site-B increased. The population density after recovery from the hypoxic event decreased more at Site-B than at Site-A. Body size exhibited very little growth at both sites during the fall and winter, but there was rapid growth during the subsequent spring and summer, with sexual maturity being reached in early summer. Our findings demonstrated that the growth rates and survival pat terns of the hypoxia-tolerant bivalve populations differed between sites with different degrees of sediment reduction. To understand the biological traits of hypoxia-tolerant bivalve species, it is necessary to consider and evaluate spatial dif-ferences in hypoxic stress at the local site level.
{"title":"Population dynamics of a hypoxia-tolerant bivalve: A comparison of two sites in the inner part of Ariake Bay, Japan","authors":"R. Orita, Tomohiro Komorita, Mutsuo Ichinomiya, H. Tsutsumi","doi":"10.3800/pbr.16.249","DOIUrl":"https://doi.org/10.3800/pbr.16.249","url":null,"abstract":": Hypoxia-tolerant bivalve populations could be a key component of ecosystem function because of their predominance in hypoxic environments. In this study, we conducted field surveys at two sites to elucidate the biologi cal traits of the hypoxia-tolerant bivalve Veremolpa micra . We detected new settlements at both sites during summer. More highly reduced conditions in the surface sediment were recorded at Site-A than at Site-B in August 2013. Following this hypoxic event, shell growth of V. micra at Site-A decelerated, whereas that at Site-B increased. The population density after recovery from the hypoxic event decreased more at Site-B than at Site-A. Body size exhibited very little growth at both sites during the fall and winter, but there was rapid growth during the subsequent spring and summer, with sexual maturity being reached in early summer. Our findings demonstrated that the growth rates and survival pat terns of the hypoxia-tolerant bivalve populations differed between sites with different degrees of sediment reduction. To understand the biological traits of hypoxia-tolerant bivalve species, it is necessary to consider and evaluate spatial dif-ferences in hypoxic stress at the local site level.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41689865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaodong Wang, Yuta Yagi, Shotaro Tojima, I. Kinoshita, S. Fujita, Y. Hirota
: In early life history, the clupeoid fishes, Ilisha elongata (Pristigasteridae) and Sardinella zunasi (Clupei-dae) have similar spawning seasons and nurseries from spring to summer in the Ariake Sound, Shimabara Bay, Japan. Surveys conducted using larva nets and a beam trawl in July showed that the horizontal egg and larva distributions of I. elongata and S. zunasi both overlapped considerably in the inner estuaries; however, I. elongata settled in the estuaries while S. zunasi retained a pelagic distribution. A comparison of the vertical distributions of the two species in the estuary showed that I. elongata larvae were dispersed from the surface to near-bottom layers during the flood tide, and moved downwards to avoid being swept out of the estuary after the high tide, while S. zunasi larvae remained spread throughout the water column in all tidal phases. The findings suggest the existence of niche segregation during the pe lagic larval period in the two species. Thus, by examining differences in larval mouth sizes, which are much larger in I. elongata than in S. zunasi, it appears that prey preference varies between the two species, prey specialization occurs, and there is no niche competition between the two species.
{"title":"Comparison of larval distribution in two clupeoid fishes (Ilisha elongata and Sardinella zunasi) in the inner estuaries of Ariake Sound, Shimabara Bay, Japan","authors":"Xiaodong Wang, Yuta Yagi, Shotaro Tojima, I. Kinoshita, S. Fujita, Y. Hirota","doi":"10.3800/pbr.16.292","DOIUrl":"https://doi.org/10.3800/pbr.16.292","url":null,"abstract":": In early life history, the clupeoid fishes, Ilisha elongata (Pristigasteridae) and Sardinella zunasi (Clupei-dae) have similar spawning seasons and nurseries from spring to summer in the Ariake Sound, Shimabara Bay, Japan. Surveys conducted using larva nets and a beam trawl in July showed that the horizontal egg and larva distributions of I. elongata and S. zunasi both overlapped considerably in the inner estuaries; however, I. elongata settled in the estuaries while S. zunasi retained a pelagic distribution. A comparison of the vertical distributions of the two species in the estuary showed that I. elongata larvae were dispersed from the surface to near-bottom layers during the flood tide, and moved downwards to avoid being swept out of the estuary after the high tide, while S. zunasi larvae remained spread throughout the water column in all tidal phases. The findings suggest the existence of niche segregation during the pe lagic larval period in the two species. Thus, by examining differences in larval mouth sizes, which are much larger in I. elongata than in S. zunasi, it appears that prey preference varies between the two species, prey specialization occurs, and there is no niche competition between the two species.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46770482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shoreline armouring has progressively affected the coastal landscapes of countries all over the world, and armouring construction will increase in coming years as a consequence of climate change. Armouring has the potential to affect coastal environments and induce changes in the abundance and diversity of marine communities, and its effects might by increased by wide adoption. Moreover, compared with temperate locations, the effects of armouring have been less studied in tropical and subtropical areas. Okinawa Island, the largest and most populated island of the Ryukyu Archipelago in southern Japan, has been affected by numerous civil and military engineering works. After decades of development, less than 40% of its coastline remains natural, and yet impacts from armouring on local marine communities have been overlooked until recent years. The aim of this research was to evaluate effects of near-shore armouring on the surrounding environment by comparing diversity and abundance of coral rubble mobile cryptofauna benthic communities between armoured and control sites. Across six different geographic locations, coral rubble was sampled in front of subtidal breakwaters and at nearby control sites. Armoured sites were associated with lower cryptofauna abundances and reduced richness and diversity at higher taxonomic levels (phylum and class). Reduction in spatial complexity could be a plausible reason for the observed patterns. Impacts could be mitigated by combining technical innovations, habitat restoration, and use of natural spaces as buffers for coastal protection. Since less than half of Okinawa Island’s coastline remains in a natural state, environmental conservation should be prioritized.
{"title":"Impacts of coastal armouring on rubble mobile cryptofauna at shallow coral reefs in Okinawa, Japan","authors":"G. Masucci, Piera Biondi, J. Reimer","doi":"10.3800/pbr.16.237","DOIUrl":"https://doi.org/10.3800/pbr.16.237","url":null,"abstract":"Shoreline armouring has progressively affected the coastal landscapes of countries all over the world, and armouring construction will increase in coming years as a consequence of climate change. Armouring has the potential to affect coastal environments and induce changes in the abundance and diversity of marine communities, and its effects might by increased by wide adoption. Moreover, compared with temperate locations, the effects of armouring have been less studied in tropical and subtropical areas. Okinawa Island, the largest and most populated island of the Ryukyu Archipelago in southern Japan, has been affected by numerous civil and military engineering works. After decades of development, less than 40% of its coastline remains natural, and yet impacts from armouring on local marine communities have been overlooked until recent years. The aim of this research was to evaluate effects of near-shore armouring on the surrounding environment by comparing diversity and abundance of coral rubble mobile cryptofauna benthic communities between armoured and control sites. Across six different geographic locations, coral rubble was sampled in front of subtidal breakwaters and at nearby control sites. Armoured sites were associated with lower cryptofauna abundances and reduced richness and diversity at higher taxonomic levels (phylum and class). Reduction in spatial complexity could be a plausible reason for the observed patterns. Impacts could be mitigated by combining technical innovations, habitat restoration, and use of natural spaces as buffers for coastal protection. Since less than half of Okinawa Island’s coastline remains in a natural state, environmental conservation should be prioritized.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44588180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Kurihara, K. Hashimoto, S. Nakano, Y. Matsuyama, T. Yurimoto, S. Nagasoe, Atsushi Ito, D. Ojima, Kazumaro Okamura
: In the Ariake Sea, Japan, pen shells Atrina spp. are an important fishery resource, but now abundance of the stock has decreased. Methods to increase the abundance include transplanting juvenile Atrina spp. in the sea and main-taining the survival rate high. We conducted transplant experiments to compare the survival rates of one genetic lineage of Atrina between 1) transplant sites and 2) preventive measures against predation. We conducted five runs of transplant of Atrina artificial seeds (about 10 cm in shell length) in the inner and outer sea areas, using cages with different mesh opening sizes. We found that 1) Atrina sp. survived better at stations in the outer sea area than in the inner sea area. This trend in the last run was partly explained by a heavy deposition of mud at a station in the inner sea area. 2) Atrina sp. survived better in cages with mesh opening size < 20 mm than those with the size > 20 mm. This was attributed to predatory animals, which presumably include the whelk Rapana venosa , octopi Octopodidae spp., and swimming crabs Charybdis spp. recorded by underwater time-lapse camera. In conclusion, transplant to the outer sea area and protec tion from predators with a mesh < 20 mm opening are promising to increase the survival rate of one genetic lineage of Atrina transplanted in the Ariake Sea.
{"title":"Effects of transplant sites and preventive measures against predation on the survival rates of pen shell in the Ariake Sea, Japan","authors":"T. Kurihara, K. Hashimoto, S. Nakano, Y. Matsuyama, T. Yurimoto, S. Nagasoe, Atsushi Ito, D. Ojima, Kazumaro Okamura","doi":"10.3800/pbr.16.266","DOIUrl":"https://doi.org/10.3800/pbr.16.266","url":null,"abstract":": In the Ariake Sea, Japan, pen shells Atrina spp. are an important fishery resource, but now abundance of the stock has decreased. Methods to increase the abundance include transplanting juvenile Atrina spp. in the sea and main-taining the survival rate high. We conducted transplant experiments to compare the survival rates of one genetic lineage of Atrina between 1) transplant sites and 2) preventive measures against predation. We conducted five runs of transplant of Atrina artificial seeds (about 10 cm in shell length) in the inner and outer sea areas, using cages with different mesh opening sizes. We found that 1) Atrina sp. survived better at stations in the outer sea area than in the inner sea area. This trend in the last run was partly explained by a heavy deposition of mud at a station in the inner sea area. 2) Atrina sp. survived better in cages with mesh opening size < 20 mm than those with the size > 20 mm. This was attributed to predatory animals, which presumably include the whelk Rapana venosa , octopi Octopodidae spp., and swimming crabs Charybdis spp. recorded by underwater time-lapse camera. In conclusion, transplant to the outer sea area and protec tion from predators with a mesh < 20 mm opening are promising to increase the survival rate of one genetic lineage of Atrina transplanted in the Ariake Sea.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46828648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hiroyuki Hiraga, K. Azuma, T. Kusaka, I. Kinoshita, S. Fujita
: This study was undertaken to clarify the downstream drifting of Macrobrachium larvae in the Shimanto River by 24-hour sampling. Stage I zoeae accounted for most larvae collected in fresh and brackish waters. M. formosense and M. japonicum dominated in brackish and fresh waters, respectively, while M. nipponense occurred only in brackish waters. The amount of yolk droplets of M. formosense and M. japonicum reduced over time in freshwater. However, no larvae that had completely used up their yolks were observed. Even though M. japonicum larvae drifted from farther upstream than those of M. formosense , they had a higher residual amount of yolk droplets. Therefore, long-distance and long-time drifting in M. japonicum may be enabled by delaying the absorption rate of droplets.
{"title":"Downstream drifting of Macrobrachium (Decapoda: Palaemonidae) larvae in the Shimanto River, Japan","authors":"Hiroyuki Hiraga, K. Azuma, T. Kusaka, I. Kinoshita, S. Fujita","doi":"10.3800/pbr.16.301","DOIUrl":"https://doi.org/10.3800/pbr.16.301","url":null,"abstract":": This study was undertaken to clarify the downstream drifting of Macrobrachium larvae in the Shimanto River by 24-hour sampling. Stage I zoeae accounted for most larvae collected in fresh and brackish waters. M. formosense and M. japonicum dominated in brackish and fresh waters, respectively, while M. nipponense occurred only in brackish waters. The amount of yolk droplets of M. formosense and M. japonicum reduced over time in freshwater. However, no larvae that had completely used up their yolks were observed. Even though M. japonicum larvae drifted from farther upstream than those of M. formosense , they had a higher residual amount of yolk droplets. Therefore, long-distance and long-time drifting in M. japonicum may be enabled by delaying the absorption rate of droplets.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45613270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：