首页 > 最新文献

Plankton & Benthos Research最新文献

英文 中文
A new species of box jellyfish, Carybdea wayamba sp. nov. (Cnidaria: Scyphozoa: Cubomedusae: Carybdeidae) from Sri Lanka 斯里兰卡箱形水母Carybdea wayamba sp. nov.一新种(刺胞纲:孢子虫纲:绒足水母科:绒足水母科)
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-11-18 DOI: 10.3800/pbr.15.317
K. Karunarathne, M. Croos
: A new species of box jellyfish, Carybdea wayamba sp. nov. is described here based on forty specimens collected from the south and northeast coasts of Sri Lanka, with the type location being Bonavista Reef, Galle Bay. This species is classified in the genus Carybdea due to the possession of a typical heart-shaped rhopaliar niche ostia with only one upper scale and epaulette-shaped gastric phacellae in the four corners of the stomach. This new species can be distinguished from other valid members of the genus Carybdea by the combination of the structure of the two velarial canal roots per octant with one broadly bi-forked velarial canal with narrow, lateral lobations on each root, and other morphological characters such as having typical knee-shaped pedalial canal bends without any appendages, and epaulette-shaped gastric phacellae with single-rooted, brush-shaped, multiple (three to five) short-stemmed, dendritically branched (both short and long branches) gastric filaments. This is the first novel cubomedusa described from Sri Lankan waters; and the first Carybdea species described with material from the North Indian Ocean.
:根据从斯里兰卡南部和东北部海岸采集的40个标本,本文描述了一种新的箱形水母Carybdea wayamba sp.nov.,类型位置为加勒湾的Bonavista礁。该物种被归类于Carybdea属,因为它有一个典型的心形脊状生态位口,只有一个上鳞,胃的四个角落有肩章形状的胃囊。这个新物种可以通过每个八分之一的两个绒管根与一个宽双叉绒管的结构以及其他形态特征的组合来与Carybdea属的其他有效成员区分开来,绒管在每个根上都有狭窄的侧裂,例如具有典型的膝形足管弯曲,没有任何附属物,肩章状胃腺,具有单根、刷状、多个(三到五个)短茎、树枝状分支(短分支和长分支)的胃腺。这是第一部在斯里兰卡水域描述的小说《立方水母》;以及第一个用来自北印度洋的材料描述的Carybdea物种。
{"title":"A new species of box jellyfish, Carybdea wayamba sp. nov. (Cnidaria: Scyphozoa: Cubomedusae: Carybdeidae) from Sri Lanka","authors":"K. Karunarathne, M. Croos","doi":"10.3800/pbr.15.317","DOIUrl":"https://doi.org/10.3800/pbr.15.317","url":null,"abstract":": A new species of box jellyfish, Carybdea wayamba sp. nov. is described here based on forty specimens collected from the south and northeast coasts of Sri Lanka, with the type location being Bonavista Reef, Galle Bay. This species is classified in the genus Carybdea due to the possession of a typical heart-shaped rhopaliar niche ostia with only one upper scale and epaulette-shaped gastric phacellae in the four corners of the stomach. This new species can be distinguished from other valid members of the genus Carybdea by the combination of the structure of the two velarial canal roots per octant with one broadly bi-forked velarial canal with narrow, lateral lobations on each root, and other morphological characters such as having typical knee-shaped pedalial canal bends without any appendages, and epaulette-shaped gastric phacellae with single-rooted, brush-shaped, multiple (three to five) short-stemmed, dendritically branched (both short and long branches) gastric filaments. This is the first novel cubomedusa described from Sri Lankan waters; and the first Carybdea species described with material from the North Indian Ocean.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44538292","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}
引用次数: 4
Duobrachium sparksae (incertae sedis Ctenophora Tentaculata Cydippida): A new genus and species of benthopelagic ctenophore seen at 3,910 m depth off the coast of Puerto Rico Duobrachium sparksae(incertae sedis Ctenophora Tentaculata Cydipida):在波多黎各海岸3910米深处发现的底栖栉水母的一个新属和新种
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-11-18 DOI: 10.3800/pbr.15.296
M. Ford, N. Bezio, A. Collins
On April 10, 2015, three individuals of an undescribed species of ctenophore were observed moving just above the seafloor in the Arecibo Amphitheater inside the Guajataca Canyon, north-northwest of Puerto Rico at a depth of approximately 3,900 m. The ctenophore is distinctive; having two prominent tentacle arms, a body that is rectangular when observed laterally along the tentacular plane, and rounded when observed laterally along the stomodeal plane. The tentacle arms each give rise to an extensible tentacle bearing short tentilla of uniform length and distribution. One ctenophore appeared to be anchored to the seafloor by its two long flexible tentacles, as well as by two filaments exiting its oral end. The overall form of the ctenophore suggests classification within the problematic, non-monophyletic order Cydippida, but the robust tentacle arms are more reminiscent of benthic species of Platyctenida, particularly those of families Lyroctenidae and Ctenoplanidae. Whereas most platyctenid ctenophores do not possess ctene rows in their adult forms, features that are possessed by the new species described herein, species of Ctenoplanidae retain comb rows as adults and are capable of limited swimming. The species described herein is easily distinguishable from all other known species of Ctenophora and may trace its origin to a lineage diverging near the origin of Platyctenida.
2015年4月10日,在波多黎各西北偏北的瓜哈塔卡峡谷的阿雷西博露天剧场,一种未描述的栉水母的三个个体在大约3900米深的海底被观察到移动。栉号乐器是与众不同的;有两个突出的触手臂的,沿触手面向外观察时呈矩形,沿气孔面向外观察时呈圆形的。每个触手臂产生一个可扩展的触手,带有长度和分布均匀的短触手。有一条栉水母似乎是用它的两条柔韧的长触须和从它的口端伸出的两条细丝,把它固定在海底的。栉水母的整体形态表明它属于有问题的、非单系的栉水母目,但强健的触须更让人联想到栉水母的底栖物种,尤其是栉水母科和栉水母科的底栖物种。尽管大多数栉水母在成年形态中不具有栉行,但本文所描述的新物种所具有的特征,栉虫科的物种在成年形态中保留了栉行,并且能够有限地游泳。这里描述的物种很容易与所有其他已知的栉虫物种区分开来,并且可以将其起源追溯到Platyctenida起源附近的一个分支。
{"title":"Duobrachium sparksae (incertae sedis Ctenophora Tentaculata Cydippida): A new genus and species of benthopelagic ctenophore seen at 3,910 m depth off the coast of Puerto Rico","authors":"M. Ford, N. Bezio, A. Collins","doi":"10.3800/pbr.15.296","DOIUrl":"https://doi.org/10.3800/pbr.15.296","url":null,"abstract":"On April 10, 2015, three individuals of an undescribed species of ctenophore were observed moving just above the seafloor in the Arecibo Amphitheater inside the Guajataca Canyon, north-northwest of Puerto Rico at a depth of approximately 3,900 m. The ctenophore is distinctive; having two prominent tentacle arms, a body that is rectangular when observed laterally along the tentacular plane, and rounded when observed laterally along the stomodeal plane. The tentacle arms each give rise to an extensible tentacle bearing short tentilla of uniform length and distribution. One ctenophore appeared to be anchored to the seafloor by its two long flexible tentacles, as well as by two filaments exiting its oral end. The overall form of the ctenophore suggests classification within the problematic, non-monophyletic order Cydippida, but the robust tentacle arms are more reminiscent of benthic species of Platyctenida, particularly those of families Lyroctenidae and Ctenoplanidae. Whereas most platyctenid ctenophores do not possess ctene rows in their adult forms, features that are possessed by the new species described herein, species of Ctenoplanidae retain comb rows as adults and are capable of limited swimming. The species described herein is easily distinguishable from all other known species of Ctenophora and may trace its origin to a lineage diverging near the origin of Platyctenida.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":"15 1","pages":"296-305"},"PeriodicalIF":0.6,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47962120","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}
引用次数: 6
New record of Linuche draco (Scyphozoa, Coronatae, Linuchidae) from Japan 日本龙舌兰新记录(Scyphozoa,Coronatae,龙舌兰科)
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-11-18 DOI: 10.3800/pbr.15.327
S. Toshino
: The order Coronatae is a unique group, with the following characters distinguishing them from other scy-phozoans: a coronal furrow, a coronate pedalium, and oocytes that develop without accessory pigments. Coronatae polyps are enclosed in chitinous tubes and produce multiple ephyrae via polydisk strobilation. So far, eleven described species of Coronatae have been reported in Japanese waters: Atolla wyvillei , Atolla vanhoeffeni , Atolla russelli , Atorella vanhoeffeni , Atorella japonica , Nausithoe punctata , Palephyra pelagica , Periphylla periphylla , Periphyllopsis braueri , Stephanoscyphistoma corniformis and Nausithoe racemosa . The present study reports detailed observations of the mor-phology of one species newly recorded in Japan: Linuche draco . Development from ephyra to mature medusa was observed and recorded. Additional investigations are needed to understand the diversity of the order Coronatae in Japan.
:冠状目是一个独特的类群,与其他花萼动物有以下特征:冠状沟、冠状花序和没有辅助色素的卵母细胞。冠状息肉被包裹在几丁质管中,通过多盘交错产生多个前体。到目前为止,在日本海域已报道的冠状科植物有11种:威威环礁、凡霍芬环礁、russelli环礁、凡霍芬环礁、日本环礁、斑点环礁、远洋环礁、圆礁环礁、布氏环礁环礁、角状环礁环礁和总状环礁环礁。本文报道了在日本新记录的一种龙的形态形态学的详细观察。观察并记录了从蛇足到成熟水母的发育过程。需要进一步调查以了解日本冠状目的多样性。
{"title":"New record of Linuche draco (Scyphozoa, Coronatae, Linuchidae) from Japan","authors":"S. Toshino","doi":"10.3800/pbr.15.327","DOIUrl":"https://doi.org/10.3800/pbr.15.327","url":null,"abstract":": The order Coronatae is a unique group, with the following characters distinguishing them from other scy-phozoans: a coronal furrow, a coronate pedalium, and oocytes that develop without accessory pigments. Coronatae polyps are enclosed in chitinous tubes and produce multiple ephyrae via polydisk strobilation. So far, eleven described species of Coronatae have been reported in Japanese waters: Atolla wyvillei , Atolla vanhoeffeni , Atolla russelli , Atorella vanhoeffeni , Atorella japonica , Nausithoe punctata , Palephyra pelagica , Periphylla periphylla , Periphyllopsis braueri , Stephanoscyphistoma corniformis and Nausithoe racemosa . The present study reports detailed observations of the mor-phology of one species newly recorded in Japan: Linuche draco . Development from ephyra to mature medusa was observed and recorded. Additional investigations are needed to understand the diversity of the order Coronatae in Japan.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48875654","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}
引用次数: 0
A new record of Lynceus brachyurus Müller, 1776 (Laevicaudata: Lynceidae) from the Shiretoko Peninsula, Northeast Japan 文章标题日本东北知子半岛月蝉属(Lynceus brachyurus m<e:1>)新纪录,1776(月蝉科)
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-11-18 DOI: 10.3800/pbr.15.334
Norihito Takahashi
A new Japanese record of the Holarctic clam shrimp Lynceus brachyurus is presented with key morphological characteristics and habitat information. The rostrum, clasper, telson, and lamina abdominalis of this insular record are similar to those of the common form of L. brachyurus in continental populations, and our specimens fall within the previously reported species variability.
介绍了全北极蛤虾Lynceus brachyurus在日本的新记录,包括主要形态特征和栖息地信息。该岛记录的喙部、喙部、喙部和腹板与大陆种群中常见的短尾龙相似,并且我们的标本符合先前报道的物种变异性。
{"title":"A new record of Lynceus brachyurus Müller, 1776 (Laevicaudata: Lynceidae) from the Shiretoko Peninsula, Northeast Japan","authors":"Norihito Takahashi","doi":"10.3800/pbr.15.334","DOIUrl":"https://doi.org/10.3800/pbr.15.334","url":null,"abstract":"A new Japanese record of the Holarctic clam shrimp Lynceus brachyurus is presented with key morphological characteristics and habitat information. The rostrum, clasper, telson, and lamina abdominalis of this insular record are similar to those of the common form of L. brachyurus in continental populations, and our specimens fall within the previously reported species variability.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42546237","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}
引用次数: 0
Settlement patterns of two sesarmid megalopae in the Sai River Estuary, Ishikawa Prefecture, Japan 日本石川县西河口两种芝麻籽类的聚落模式
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-11-18 DOI: 10.3800/pbr.15.306
Takehiro Matsumoto, Hiroaki Arakawa, T. Murakami, S. Yanai
Two semi-terrestrial crab species, Chiromantes haematocheir and Chiromantes dehaani, are closely related and have a sympatric distribution. The ecological characteristics of these species, including habitat and behavior during the adult stage, have been investigated. However, the larval stage remains poorly understood because it is difficult to identify larvae morphologically. Our study objectives are to clarify the settlement patterns involved in recruitment of the two species of megalopae using genetic analysis and the effects of ecological factors on settlement, including 1) seasonal changes, 2) spatial variations (dominated by conspecific or heterospecific adults), and 3) tidal effects. The Chiromantes megalopae were collected in the lower reach of the Sai River during spring and neap tides from August to November 2017. Megalopa larvae were collected from three areas: one dominated by C. haematocheir adults, one dominated by C. dehaani adults, and a revetment area. Both species of megalopae showed seasonal and spatial variations in settlement, which also differed with tidal fluctuations. Chiromantes dehaani megalopae settled from midAugust to early October and C. haematocheir megalopae settled from early September to early November. Chiromantes haematocheir megalopae preferentially settled in the area dominated by conspecific adults over the area dominated by C. dehaani and the revetment area, while no difference in the settlement of C. dehaani megalopae was observed among areas. Chiromantes haematocheir megalopae returned on the spring tide; however, C. dehaani megalopae showed no tidal pattern.
两种半陆生蟹(Chiromantes haematocheir和dehaani)亲缘关系密切,具有同域分布。研究了这些物种的生态特征,包括栖息地和成虫期的行为。然而,幼虫阶段仍然知之甚少,因为很难从形态学上识别幼虫。本研究的目的是通过遗传分析和生态因素对聚落的影响,包括季节变化、空间变化(同种或异种成虫占主导地位)和潮汐效应,阐明两种大翅目昆虫在聚落过程中的聚落模式。于2017年8 - 11月春潮和小潮期间在西江下游采集了巨斑螯虾。采集的大鳞蝇幼虫主要分布在3个区域:以赤色大鳞蝇成虫为优势区、以德哈尼大鳞蝇成虫为优势区和驳岸区。两种蝇类的沉降均存在季节和空间差异,且随潮汐变化而变化。chromantes dehaani megalopae于8月中旬至10月初定居,C. haematocheir megalopae于9月初至11月初定居。大斑赤色螯蟹在同种成虫优势区比在大斑赤色螯蟹优势区和驳岸区更倾向于定居,而大斑赤色螯蟹在不同地区的定居没有差异。巨斑Chiromantes haematocheir megaloopae在大潮中返回;然而,巨藻C. dehaani megalopae没有潮汐模式。
{"title":"Settlement patterns of two sesarmid megalopae in the Sai River Estuary, Ishikawa Prefecture, Japan","authors":"Takehiro Matsumoto, Hiroaki Arakawa, T. Murakami, S. Yanai","doi":"10.3800/pbr.15.306","DOIUrl":"https://doi.org/10.3800/pbr.15.306","url":null,"abstract":"Two semi-terrestrial crab species, Chiromantes haematocheir and Chiromantes dehaani, are closely related and have a sympatric distribution. The ecological characteristics of these species, including habitat and behavior during the adult stage, have been investigated. However, the larval stage remains poorly understood because it is difficult to identify larvae morphologically. Our study objectives are to clarify the settlement patterns involved in recruitment of the two species of megalopae using genetic analysis and the effects of ecological factors on settlement, including 1) seasonal changes, 2) spatial variations (dominated by conspecific or heterospecific adults), and 3) tidal effects. The Chiromantes megalopae were collected in the lower reach of the Sai River during spring and neap tides from August to November 2017. Megalopa larvae were collected from three areas: one dominated by C. haematocheir adults, one dominated by C. dehaani adults, and a revetment area. Both species of megalopae showed seasonal and spatial variations in settlement, which also differed with tidal fluctuations. Chiromantes dehaani megalopae settled from midAugust to early October and C. haematocheir megalopae settled from early September to early November. Chiromantes haematocheir megalopae preferentially settled in the area dominated by conspecific adults over the area dominated by C. dehaani and the revetment area, while no difference in the settlement of C. dehaani megalopae was observed among areas. Chiromantes haematocheir megalopae returned on the spring tide; however, C. dehaani megalopae showed no tidal pattern.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42105226","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}
引用次数: 1
A sea pen field in shallow water in the Amakusa Islands, southern Japan 在日本南部的Amakusa群岛的浅水中的一个海围栏
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-08-14 DOI: 10.3800/pbr.15.259
Yuka Kushida, H. Kise, C. McFadden, J. Reimer
: Sea pens are ecologically important habitats for associated marine organisms, serving as ecosystem engi neers in sandy or muddy seafloor environments. In such areas, sea pens can form habitats with high population densi ties known as “ sea pen fields ” . However, the presence and importance of sea pen fields have not been well studied in shallow waters in East Asia. Here, we report a sea pen field of Virgularia sp. aff. gustaviana in the shallow waters of Ushibuka Marine Park, in the Amakusa Islands of southern Japan. The average colony numbers of the field across all depths (7–20 m) was 10.3 colonies/m 2 (live colonies) to 13.6 colonies/m 2 (all: live + dead colonies + holes), and the area of the sea pen field was at least ∼ 50,000 m 2 . At a depth of 15 m, the substratum consisted of sand and fallen leaves of terrestrial origin, and the highest sea pen density was observed (averages = 17.2 live colonies/m 2 , = 25.8 total (live + dead + holes) colonies/m 2 ). At a depth of 20 m, the substratum consisted of broken shells and rocks and had the lowest density (live colonies: average = 0.8 colonies/m 2 , all: average = 1.0 colonies/m 2 ). There were significant differ ences in colony number of Virgularia sp. aff. gustaviana between the “ sand ” , “ sand + leaves ” , and “ broken shells/rocks ” substrates. We hypothesize that the strength of the water currents caused by local geographic features and tidal move ments produce suitable sedimentation and habitat for this species of sea pen. Therefore, we suggest that preserving the natural coastline is crucial to protect this and other sea pen fields in shallow waters and their benthic marine communi ties.
:海堤是相关海洋生物的重要生态栖息地,在沙质或泥泞的海底环境中起着生态系统工程师的作用。在这些地区,海堤可以形成种群密度高的栖息地,被称为“海堤场”。然而,东亚浅水区海洋围栏的存在和重要性尚未得到很好的研究。在这里,我们报道了一个Virgularia sp.affe的海洋围栏。在日本南部的Amakusa群岛的Ushibuka海洋公园的浅水中的阵风。所有深度(7–20 m)的场平均菌落数为10.3个菌落/m 2(活菌落)至13.6个菌落/m2(全部:活菌落+死菌落+洞),海堤场面积至少为~50000 m 2。在15m深度处,下层由沙和陆生落叶组成,观察到最高的海堤密度(平均=17.2个活菌落/m2,=25.8个总(活+死+洞)菌落/m2)。在20 m深度处,基质由破碎的贝壳和岩石组成,密度最低(活菌落:平均=0.8个菌落/m 2,全部:平均=1.0个菌落/m2)。Virgularia sp.的菌落数量存在显著差异。“沙子”、“沙子+树叶”和“破碎的贝壳/岩石”基质之间的古斯塔维亚纳。我们假设,由当地地理特征和潮汐移动引起的水流强度为该海堤物种产生了合适的沉积和栖息地。因此,我们建议,保护自然海岸线对于保护该海域和其他浅水海域及其底栖海洋群落至关重要。
{"title":"A sea pen field in shallow water in the Amakusa Islands, southern Japan","authors":"Yuka Kushida, H. Kise, C. McFadden, J. Reimer","doi":"10.3800/pbr.15.259","DOIUrl":"https://doi.org/10.3800/pbr.15.259","url":null,"abstract":": Sea pens are ecologically important habitats for associated marine organisms, serving as ecosystem engi neers in sandy or muddy seafloor environments. In such areas, sea pens can form habitats with high population densi ties known as “ sea pen fields ” . However, the presence and importance of sea pen fields have not been well studied in shallow waters in East Asia. Here, we report a sea pen field of Virgularia sp. aff. gustaviana in the shallow waters of Ushibuka Marine Park, in the Amakusa Islands of southern Japan. The average colony numbers of the field across all depths (7–20 m) was 10.3 colonies/m 2 (live colonies) to 13.6 colonies/m 2 (all: live + dead colonies + holes), and the area of the sea pen field was at least ∼ 50,000 m 2 . At a depth of 15 m, the substratum consisted of sand and fallen leaves of terrestrial origin, and the highest sea pen density was observed (averages = 17.2 live colonies/m 2 , = 25.8 total (live + dead + holes) colonies/m 2 ). At a depth of 20 m, the substratum consisted of broken shells and rocks and had the lowest density (live colonies: average = 0.8 colonies/m 2 , all: average = 1.0 colonies/m 2 ). There were significant differ ences in colony number of Virgularia sp. aff. gustaviana between the “ sand ” , “ sand + leaves ” , and “ broken shells/rocks ” substrates. We hypothesize that the strength of the water currents caused by local geographic features and tidal move ments produce suitable sedimentation and habitat for this species of sea pen. Therefore, we suggest that preserving the natural coastline is crucial to protect this and other sea pen fields in shallow waters and their benthic marine communi ties.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41509312","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}
引用次数: 3
A new species in the subgenus Javanisomysis in the genus Anisomysis (Crustacea: Mysida: Mysidae) for specimens collected from Lombok Island, Indonesia Anisomysis属Javanisomysis亚属的一个新种(甲壳纲:Mysida:Mysidae),采集自印度尼西亚龙目岛的标本
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-08-14 DOI: 10.3800/pbr.15.238
S. Sawamoto, Y. Hanamura, R. Mantiri, S. Ohtsuka
: Mysid specimens collected at Lombok Island, Indonesia were examined and assessed taxonomically. These specimens share morphological characteristics with species of the subgenus Javanisomysis (genus Anisomysis ). They are separable from the other four known species of the subgenus by the structure of the fourth male pleopod, and the condition and pattern of sub-segmentation in the third to eighth thoracopodal carpopropodi of both sexes. The male pleopod is long and reaches the posterior end of the sixth abdominal somite, excluding the apical barbed setae, and the first segment of the pleopod is broader in the proximal one-fourth to one-third. The third to eighth thoracopodal carpopropodi are divided distally into two segments. The population from Lombok Island thus is considered an undescribed species of the subgenus. On the basis of characteristics of the fourth male pleopod, a key to species of the subgenus is provided.
:对在印度尼西亚龙目岛采集的Mysid标本进行了检查和分类评估。这些标本的形态特征与爪哇松属的种相同。根据第4雄性多足类的结构和第3至第8雄性胸足类的分节情况和模式,它们与该亚属的其他4个已知种可以区分开来。雄性多足类体长,除顶端有倒刺的刚毛外,长至第六腹节的后端,多足类体首节近端宽四分之一至三分之一。第三至第八胸足桡足远端分为两节。因此,龙目岛的种群被认为是该亚属的一个未被描述的物种。根据第四只雄性多足类的特征,给出了该亚属的种键。
{"title":"A new species in the subgenus Javanisomysis in the genus Anisomysis (Crustacea: Mysida: Mysidae) for specimens collected from Lombok Island, Indonesia","authors":"S. Sawamoto, Y. Hanamura, R. Mantiri, S. Ohtsuka","doi":"10.3800/pbr.15.238","DOIUrl":"https://doi.org/10.3800/pbr.15.238","url":null,"abstract":": Mysid specimens collected at Lombok Island, Indonesia were examined and assessed taxonomically. These specimens share morphological characteristics with species of the subgenus Javanisomysis (genus Anisomysis ). They are separable from the other four known species of the subgenus by the structure of the fourth male pleopod, and the condition and pattern of sub-segmentation in the third to eighth thoracopodal carpopropodi of both sexes. The male pleopod is long and reaches the posterior end of the sixth abdominal somite, excluding the apical barbed setae, and the first segment of the pleopod is broader in the proximal one-fourth to one-third. The third to eighth thoracopodal carpopropodi are divided distally into two segments. The population from Lombok Island thus is considered an undescribed species of the subgenus. On the basis of characteristics of the fourth male pleopod, a key to species of the subgenus is provided.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48149750","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}
引用次数: 0
Trophic segregation in a burrow: the stable carbon and nitrogen isotope ratios of the burrowing shrimp Upogebia major and its commensal bivalve Cryptomya busoensis 洞穴中的营养分离:洞穴虾Upogebia major及其共生双壳类Cryptomya busoensis的稳定碳氮同位素比率
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-08-14 DOI: 10.3800/pbr.15.220
K. Seike, R. Goto
: Burrows produced by marine invertebrates often harbor other small commensal invertebrates. The mud shrimp Upogebia is known to coexist with the myid bivalve Cryptomya in a burrow produced by the shrimp. Both species are filter-feeders, and thus interspecific competition or trophic niche segregation may occur in the burrow. Samples for carbon and nitrogen stable isotope analysis were collected from a tidal flat near the tidal inlet of Akkeshi Lake, Hokkaido, northern Japan in April 2013. In addition, stratified benthos sampling was conducted on the tidal flat in August 2018, to clarify the interspecific relationship between U. major and C. busoensis in the burrow. The stratified benthos sampling showed the vertical distribution of these species, and indicated that both species filter water from the same part of the burrow for feeding. The stable carbon and nitrogen isotope analysis showed that important food sources for both U. major and C. busoensis are marine phytoplankton and microphytobenthos. In addition, C. busoensis is likely to consume terrestrial organic matter whereas U. major is unable to utilize it. The partial trophic segregation between the species increases the potential benthic filtering because it allows the Upogebia burrow complex to con sume a wide variety of organic matter, and it might reduce interspecific competition between the filter-feeding host and its commensal species. These results demonstrate how ecologically similar macrobenthos can coexist in a burrow.
:海洋无脊椎动物产生的洞穴通常栖息着其他小型共生无脊椎动物。众所周知,泥虾Upogebia与myid双壳类Cryptomya在虾产生的洞穴中共存。这两个物种都是滤食性动物,因此洞穴中可能会发生种间竞争或营养生态位分离。用于碳和氮稳定同位素分析的样本是2013年4月从日本北部北海道阿克什湖潮汐入口附近的潮汐流中采集的。此外,2018年8月对潮汐流进行了海底生物分层采样,以澄清洞穴中的大蟾蜍和布森蟾蜍之间的种间关系。分层海底生物采样显示了这些物种的垂直分布,并表明这两个物种都从洞穴的同一部分过滤水进行觅食。稳定的碳氮同位素分析表明,浮游浮游植物和小型底栖生物是主要和重要的食物来源。此外,C.busoensis可能会消耗陆地有机物,而U.major则无法利用它。物种之间的部分营养隔离增加了潜在的底栖生物过滤,因为这使Upogebia洞穴复合体能够消耗各种有机物,它可能会减少滤食性宿主与其共生物种之间的种间竞争。这些结果证明了生态上相似的大型底栖动物是如何在洞穴中共存的。
{"title":"Trophic segregation in a burrow: the stable carbon and nitrogen isotope ratios of the burrowing shrimp Upogebia major and its commensal bivalve Cryptomya busoensis","authors":"K. Seike, R. Goto","doi":"10.3800/pbr.15.220","DOIUrl":"https://doi.org/10.3800/pbr.15.220","url":null,"abstract":": Burrows produced by marine invertebrates often harbor other small commensal invertebrates. The mud shrimp Upogebia is known to coexist with the myid bivalve Cryptomya in a burrow produced by the shrimp. Both species are filter-feeders, and thus interspecific competition or trophic niche segregation may occur in the burrow. Samples for carbon and nitrogen stable isotope analysis were collected from a tidal flat near the tidal inlet of Akkeshi Lake, Hokkaido, northern Japan in April 2013. In addition, stratified benthos sampling was conducted on the tidal flat in August 2018, to clarify the interspecific relationship between U. major and C. busoensis in the burrow. The stratified benthos sampling showed the vertical distribution of these species, and indicated that both species filter water from the same part of the burrow for feeding. The stable carbon and nitrogen isotope analysis showed that important food sources for both U. major and C. busoensis are marine phytoplankton and microphytobenthos. In addition, C. busoensis is likely to consume terrestrial organic matter whereas U. major is unable to utilize it. The partial trophic segregation between the species increases the potential benthic filtering because it allows the Upogebia burrow complex to con sume a wide variety of organic matter, and it might reduce interspecific competition between the filter-feeding host and its commensal species. These results demonstrate how ecologically similar macrobenthos can coexist in a burrow.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45657429","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}
引用次数: 7
Males display “inverse rapping” as a mating behavior to receptive females in the hermit crab Pagurus nigrofascia 在寄居蟹Pagurus nigrofascia中,雄性表现出“反向拍打”,这是对接受雌性的交配行为
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-08-14 DOI: 10.3800/pbr.15.279
Yuina Kido, S. Wada
: This paper describes “ inverse rapping ” as a characteristic mating behavior in Pagurus nigrofascia . The behavior involves one hermit crab pulling another crab ʼ s shell towards itself causing the shells to hit against each other. This is the first evidence that males perform inverse rapping as a mating behavior in a Pagurus species. Two experi-ments were conducted to describe the inverse rapping in detail and to discuss its function. In Experiment A, we clarified when (mating season or non-mating season) and to whom (males or females) males displayed this behavior. A focal male that had not been guarding in the field was placed together with another crab and their interaction was observed, especially inverse rapping. Males showed inverse rapping mainly with a female that was close to copulation in the mating season, especially when the male guarded the female. In Experiment B, we examined the female ʼ s response to male inverse rapping and tested the effect of the presence of a neighboring conspecific on the occurrence of the behavior. Most females reduced struggling and/or withdrew into their shells in response to male inverse rapping. The presence of neighboring crabs did not affect inverse rapping. Our findings suggest that inverse rapping is a mating behavior in P. nigrofascia , and that inverse rapping may benefit males in the initiation and/or continuation of precopulatory guarding because it can help to restrain struggling females. This behavior has not been observed in other sympatric Pagurus species and appears to be a characteristic mating behavior of P. nigrofascia .
:本文将“反向拍打”描述为黑龙的一种特征性交配行为。这种行为包括一只寄居蟹将另一只螃蟹的外壳拉向自己,导致外壳相互碰撞。这是第一个证据表明,在帕古龙物种中,雄性会将反向拍打作为一种交配行为。对反振打进行了两次实验,详细描述了反振打过程,并对其作用进行了讨论。在实验A中,我们明确了雄性何时(交配季节或非交配季节)以及对谁(雄性或雌性)表现出这种行为。将一只没有在现场保护的焦点雄性螃蟹与另一只螃蟹放在一起,观察到它们的相互作用,尤其是反向拍打。雄性在交配季节主要与接近交配的雌性表现出反向说唱,尤其是当雄性保护雌性时。在实验B中,我们检查了雌性对雄性反向敲击的反应,并测试了相邻共同体的存在对行为发生的影响。大多数雌性减少了挣扎和/或退回壳中,以回应雄性的反向敲击。相邻螃蟹的存在并没有影响反向敲击。我们的研究结果表明,反向拍打是黑腹蛛的一种交配行为,反向拍打可能有利于雄性开始和/或继续进行种群前保护,因为它有助于约束挣扎的雌性。这种行为在其他同域的帕古龙物种中没有观察到,并且似乎是黑尾龙的一种特征性交配行为。
{"title":"Males display “inverse rapping” as a mating behavior to receptive females in the hermit crab Pagurus nigrofascia","authors":"Yuina Kido, S. Wada","doi":"10.3800/pbr.15.279","DOIUrl":"https://doi.org/10.3800/pbr.15.279","url":null,"abstract":": This paper describes “ inverse rapping ” as a characteristic mating behavior in Pagurus nigrofascia . The behavior involves one hermit crab pulling another crab ʼ s shell towards itself causing the shells to hit against each other. This is the first evidence that males perform inverse rapping as a mating behavior in a Pagurus species. Two experi-ments were conducted to describe the inverse rapping in detail and to discuss its function. In Experiment A, we clarified when (mating season or non-mating season) and to whom (males or females) males displayed this behavior. A focal male that had not been guarding in the field was placed together with another crab and their interaction was observed, especially inverse rapping. Males showed inverse rapping mainly with a female that was close to copulation in the mating season, especially when the male guarded the female. In Experiment B, we examined the female ʼ s response to male inverse rapping and tested the effect of the presence of a neighboring conspecific on the occurrence of the behavior. Most females reduced struggling and/or withdrew into their shells in response to male inverse rapping. The presence of neighboring crabs did not affect inverse rapping. Our findings suggest that inverse rapping is a mating behavior in P. nigrofascia , and that inverse rapping may benefit males in the initiation and/or continuation of precopulatory guarding because it can help to restrain struggling females. This behavior has not been observed in other sympatric Pagurus species and appears to be a characteristic mating behavior of P. nigrofascia .","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48665659","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}
引用次数: 4
Bioluminescent properties of Mesochaetopterus japonicus (Polychaeta: Chaetopteridae) with comparison to Chaetopterus 日本中毛翼(多毛目:毛翼科)与毛翼的生物发光特性比较
IF 0.6 4区 生物学 Q3 Environmental Science Pub Date : 2020-08-14 DOI: 10.3800/pbr.15.228
Ikuhiko Kin, Y. Oba
: Mesochaetopterus is a bioluminescent polychaete that belongs to the family Chaetopteridae. It secrets a blue luminescent mucus as a response to mechanical stimulation similar to the species in Chaetopterus (Chae -topteridae). However, unlike Chaetopterus , the biochemical properties of Mesochaetopterus bioluminescence are largely unexplored. In this study, we examined the basic biochemical properties of the bioluminescence seen in Mesochaetopterus japonicus and compared them to those seen in Chaetopterus . The comparison revealed that similar blue luminescence peaked at approximately 460 nm were induced by the addition of Fe 2 + and H 2 O 2 , suggesting that bioluminescence in M. japonicus and Chaetopterus has similar basic biochemical properties. On the other hand, the gel filtration analyses showed that the elution volumes of active proteins were different between Mesochaetopterus and Chaetopterus . The molecular weights of these proteins were estimated to be 150 kDa and 90 kDa (approximately) for Mesochaetopterus and Chaetopterus , respectively.
中毛翼是一种生物发光的多毛类动物,属于毛翼科。它分泌一种蓝色的发光粘液,作为对机械刺激的反应,类似于毛翼动物(chaae -topteridae)。然而,与毛翼龙不同的是,中毛翼龙生物发光的生化特性在很大程度上是未知的。本研究研究了日本中毛羽蝶生物发光的基本生化特性,并与中国毛羽蝶进行了比较。结果表明,在fe2 +和h2o2的作用下,在460 nm处产生了相似的蓝色发光,表明日本绒螯虾和毛羽的生物发光具有相似的基本生化特性。另一方面,凝胶过滤分析表明,中毛翼龙和毛翼龙的活性蛋白洗脱量不同。据估计,中毛翼龙和毛翼龙的这些蛋白分子量分别为150 kDa和90 kDa(约)。
{"title":"Bioluminescent properties of Mesochaetopterus japonicus (Polychaeta: Chaetopteridae) with comparison to Chaetopterus","authors":"Ikuhiko Kin, Y. Oba","doi":"10.3800/pbr.15.228","DOIUrl":"https://doi.org/10.3800/pbr.15.228","url":null,"abstract":": Mesochaetopterus is a bioluminescent polychaete that belongs to the family Chaetopteridae. It secrets a blue luminescent mucus as a response to mechanical stimulation similar to the species in Chaetopterus (Chae -topteridae). However, unlike Chaetopterus , the biochemical properties of Mesochaetopterus bioluminescence are largely unexplored. In this study, we examined the basic biochemical properties of the bioluminescence seen in Mesochaetopterus japonicus and compared them to those seen in Chaetopterus . The comparison revealed that similar blue luminescence peaked at approximately 460 nm were induced by the addition of Fe 2 + and H 2 O 2 , suggesting that bioluminescence in M. japonicus and Chaetopterus has similar basic biochemical properties. On the other hand, the gel filtration analyses showed that the elution volumes of active proteins were different between Mesochaetopterus and Chaetopterus . The molecular weights of these proteins were estimated to be 150 kDa and 90 kDa (approximately) for Mesochaetopterus and Chaetopterus , respectively.","PeriodicalId":56054,"journal":{"name":"Plankton & Benthos Research","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45480377","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}
引用次数: 0
期刊
Plankton & Benthos Research
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1