Pub Date : 2022-09-14DOI: 10.1080/17451000.2022.2137198
J. Rubio-Polania, A. González-Solis, C. Enriquez, F. Árcega-Cabrera, V. Ceja-Moreno, L. Cetina-Euan, R. Poot-Aguayo, F. Nuñez-Chan, D. Torruco
ABSTRACT Various ecosystems of the Gulf of Mexico (GoM) may be impacted by the present increase in offshore oil exploitation. To identify future changes caused by this activity, we assessed the structure of the megabenthos community in the Perdido Fold Belt (PFB) and its relationships with environmental variables, hydrocarbons, and heavy metals. To achieve this, biological and sediment samples were obtained during the surveys Perdido II (PII) and Perdido III (PIII). 325.75 103 ind km−2 and 582.34 kg AFDW km−2 were collected, distributed in 110 species. Crustaceans and echinoderms comprised more than 70% of the total abundance and biomass. The most abundant species were Astropecten cingulatus Sladen, 1883, Callinectes sapidus Rathbun, 1896, Astropecten duplicatus Gray, 1840, and Penaeus aztecus (Ives, 1891) (12.2 103 ≤ ind Km−2 ≤ 59.4 103). They also had the greatest biomass contribution (16.8 ≤ kg AFDW km−2 ≤ 192.2). BIOENV test showed the influence of depth (Z), salinity, dissolved oxygen (DO), Acenaphthylene (Acy), Fluoranthene (Flu), n-C12, n-C37, and nickel (Ni) on the community structure. Recruitment and trawling also influenced the abundance and biomass values. Despite Z defines the environmental gradient, the hydrocarbon concentration gradient within the shelf areas makes it a good candidate for developing monitoring programmes.
墨西哥湾(GoM)的各种生态系统可能受到目前海上石油开采增加的影响。为了确定这一活动引起的未来变化，我们评估了Perdido褶皱带(PFB)巨型生物群落的结构及其与环境变量、碳氢化合物和重金属的关系。为了实现这一目标，在Perdido II (PII)和Perdido III (PIII)调查期间获得了生物和沉积物样本。共收集到325.75 103 ind km−2和582.34 kg AFDW km−2，分布于110种。甲壳类和棘皮类占总丰度和生物量的70%以上。其中最丰富的种有:星形鹦鹉(Astropecten cingulatus Sladen, 1883年)、糙皮鹦鹉(calinectes sapidus ratthbun, 1896年)、双头鹦鹉(Astropecten duplicatus Gray, 1840年)和阿氏对虾(Penaeus aztecus, Ives, 1891年)(12.2 103≤和Km−2≤59.4 103)。它们的生物量贡献最大(16.8≤kg AFDW km−2≤192.2)。BIOENV试验显示了深度(Z)、盐度、溶解氧(DO)、苊(Acy)、氟蒽(Flu)、n-C12、n-C37和镍(Ni)对群落结构的影响。捕捞和拖网捕捞也影响丰度和生物量值。尽管Z定义了环境梯度，但陆架区域内的碳氢化合物浓度梯度使其成为制定监测方案的良好候选者。
{"title":"Community structure of megabenthos of Perdido Fold Belt (Tamaulipas, Mexico) and its relationship with the oceanographic and sediment parameters including potential pollutants","authors":"J. Rubio-Polania, A. González-Solis, C. Enriquez, F. Árcega-Cabrera, V. Ceja-Moreno, L. Cetina-Euan, R. Poot-Aguayo, F. Nuñez-Chan, D. Torruco","doi":"10.1080/17451000.2022.2137198","DOIUrl":"https://doi.org/10.1080/17451000.2022.2137198","url":null,"abstract":"ABSTRACT Various ecosystems of the Gulf of Mexico (GoM) may be impacted by the present increase in offshore oil exploitation. To identify future changes caused by this activity, we assessed the structure of the megabenthos community in the Perdido Fold Belt (PFB) and its relationships with environmental variables, hydrocarbons, and heavy metals. To achieve this, biological and sediment samples were obtained during the surveys Perdido II (PII) and Perdido III (PIII). 325.75 103 ind km−2 and 582.34 kg AFDW km−2 were collected, distributed in 110 species. Crustaceans and echinoderms comprised more than 70% of the total abundance and biomass. The most abundant species were Astropecten cingulatus Sladen, 1883, Callinectes sapidus Rathbun, 1896, Astropecten duplicatus Gray, 1840, and Penaeus aztecus (Ives, 1891) (12.2 103 ≤ ind Km−2 ≤ 59.4 103). They also had the greatest biomass contribution (16.8 ≤ kg AFDW km−2 ≤ 192.2). BIOENV test showed the influence of depth (Z), salinity, dissolved oxygen (DO), Acenaphthylene (Acy), Fluoranthene (Flu), n-C12, n-C37, and nickel (Ni) on the community structure. Recruitment and trawling also influenced the abundance and biomass values. Despite Z defines the environmental gradient, the hydrocarbon concentration gradient within the shelf areas makes it a good candidate for developing monitoring programmes.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44683801","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}
Pub Date : 2022-09-14DOI: 10.1080/17451000.2022.2147950
D. R. Herrera, R. C. Costa
ABSTRACT Changes in species distribution patterns allow managers to monitor the conservation status of species. This study investigated the distribution and segregation in the blue crabs Callinectes danae and Callinectes ornatus in the South-west Atlantic subtropical shelf. We characterized the crabs’ abundance and related it to environmental factors. Abundance expressed as catch per unit effort estimates deviated significantly from crabs’ abundances assessed by years: in Year 1, station S7 showed the highest abundance for C. danae and the lowest for C. ornatus. In Year 2, the abundance of species only differed significantly in station S2. Summer was the season with the highest abundance of C. danae and spring of C. ornatus. Temperature was the environmental factor that modulated the distribution of blue crabs. The crabs presented different spatial and temporal distribution patterns, although there was no evident segregation between species. This ecological study indicates a potential site in the South-west Atlantic subtropical shelf to maintain the reproductive viability of the population.
{"title":"Distributional patterns of two sympatric blue crabs (Callinectes) and the implications for conservation management at the South-west Atlantic subtropical shelf","authors":"D. R. Herrera, R. C. Costa","doi":"10.1080/17451000.2022.2147950","DOIUrl":"https://doi.org/10.1080/17451000.2022.2147950","url":null,"abstract":"ABSTRACT\u0000 Changes in species distribution patterns allow managers to monitor the conservation status of species. This study investigated the distribution and segregation in the blue crabs Callinectes danae and Callinectes ornatus in the South-west Atlantic subtropical shelf. We characterized the crabs’ abundance and related it to environmental factors. Abundance expressed as catch per unit effort estimates deviated significantly from crabs’ abundances assessed by years: in Year 1, station S7 showed the highest abundance for C. danae and the lowest for C. ornatus. In Year 2, the abundance of species only differed significantly in station S2. Summer was the season with the highest abundance of C. danae and spring of C. ornatus. Temperature was the environmental factor that modulated the distribution of blue crabs. The crabs presented different spatial and temporal distribution patterns, although there was no evident segregation between species. This ecological study indicates a potential site in the South-west Atlantic subtropical shelf to maintain the reproductive viability of the population.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48587465","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}
Pub Date : 2022-09-14DOI: 10.1080/17451000.2022.2147947
K. Springer, Beatrice Brix da Costa, Sam Samsuardi, A. Kunzmann
ABSTRACT Since the 1960s the demand for ornamental aquarium fish has grown steadily and consequently cyanide fishing is still a popular fishing method despite its prohibition. This poses a severe threat to coral reefs in Southeast Asia. This study aimed to investigate the short-term stress reaction on photosynthetic yield in the tissues of three different hard coral colonies (branching growth forms Pocillopora damicornis and Seriatopora hystrix, and massive Porites lobata) to initially high and then decreasing cyanide exposure, mimicking cyanide fishing by fishermen. Experiments were performed both in situ in the coral reefs of the Marine Protected Area Pulau Pieh, West Sumatra, Indonesia, and in the aquaria facilities of ZMT in Germany. A Diving-PAM fluorometer was used for in vivo stress assessment of the holobiont. While in all species the photosynthetic efficiency was significantly reduced right after cyanide application, the massive species displayed much lower ΔF/Fm’ values. After three days in cyanide-free water all three coral species recovered to initial values of Fv/Fm, except for P. lobata. No bleaching or discolouration was detected by the conclusion of the experiment after 38 days. Especially Indonesian reefs with massive corals may be therefore more severely impacted by cyanide fishing since the retention time of the water in these reefs is longer than in reefs that consist primarily of branching corals. This might have implications for the management of different reef parts of the MPA.
{"title":"Simulating cyanide fishing: photosynthetic effects of short-term cyanide exposure in three different hermatypic coral species","authors":"K. Springer, Beatrice Brix da Costa, Sam Samsuardi, A. Kunzmann","doi":"10.1080/17451000.2022.2147947","DOIUrl":"https://doi.org/10.1080/17451000.2022.2147947","url":null,"abstract":"ABSTRACT Since the 1960s the demand for ornamental aquarium fish has grown steadily and consequently cyanide fishing is still a popular fishing method despite its prohibition. This poses a severe threat to coral reefs in Southeast Asia. This study aimed to investigate the short-term stress reaction on photosynthetic yield in the tissues of three different hard coral colonies (branching growth forms Pocillopora damicornis and Seriatopora hystrix, and massive Porites lobata) to initially high and then decreasing cyanide exposure, mimicking cyanide fishing by fishermen. Experiments were performed both in situ in the coral reefs of the Marine Protected Area Pulau Pieh, West Sumatra, Indonesia, and in the aquaria facilities of ZMT in Germany. A Diving-PAM fluorometer was used for in vivo stress assessment of the holobiont. While in all species the photosynthetic efficiency was significantly reduced right after cyanide application, the massive species displayed much lower ΔF/Fm’ values. After three days in cyanide-free water all three coral species recovered to initial values of Fv/Fm, except for P. lobata. No bleaching or discolouration was detected by the conclusion of the experiment after 38 days. Especially Indonesian reefs with massive corals may be therefore more severely impacted by cyanide fishing since the retention time of the water in these reefs is longer than in reefs that consist primarily of branching corals. This might have implications for the management of different reef parts of the MPA.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43034007","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}
Pub Date : 2022-09-14DOI: 10.1080/17451000.2022.2147948
Rongfu Wang, M. Chimura, K. Sadayasu, Mitsuhiro Ishino, O. Yamamura
ABSTRACT The ontogenetic and interannual variations in the diet and feeding strategy of Pacific cod (Gadus macrocephalus) were examined based on 1302 specimens collected by a trawling net off the southern coast of Hokkaido from late June to early July during 2016–2020. The diet comprised 63 species (13 taxa). Fish was the most important prey, followed by decapod crustaceans. In 2016, walleye pollock (Gadus chalcogrammus) was the dominant fish prey species, while amphipods, decapods and Japanese lanternfish (Notoscopelus japonicus) were prominent in the diet in 2017. Japanese sardine (Sardinops melanostictus) were more predominant during 2018–2020. An ontogenetic comparison of diet indicated that smaller individuals (≤400 mm standard length, SL) preyed mainly on small prey items, such as decapod crustaceans and polychaetes, whereas larger individuals (>400 mm SL) preyed mainly on fish. Moreover, prey size exhibited a significant increasing trend with predator body length. These results suggest that Pacific cod has a flexible feeding strategy that differs by life stage. The updated information on predator–prey relationships provided herein improves our understanding of energy flow in the marine ecosystem and could facilitate ecosystem-based fishery management strategies.
摘要基于2016–2020年6月下旬至7月初在北海道南部海岸用拖网收集的1302份样本，研究了太平洋鳕鱼（Gadus macrochalus）在饮食和喂养策略方面的个体发生和年际变化。饮食包括63种（13个分类群）。鱼类是最重要的猎物，其次是十足目甲壳类动物。2016年，walleye pollock（Gadus challgrammamus）是主要的鱼类猎物，而片脚类、十足类和日本灯笼鱼（Notoscopellus japonicus）在2017年的饮食中尤为突出。日本沙丁鱼（Sardinos melanostictus）在2018-2020年期间占主导地位。饮食的个体遗传学比较表明，较小的个体（≤400 mm标准长度，SL）主要捕食小型猎物，如十足目甲壳类动物和多毛类，而体型较大的个体（>400 mm SL）主要捕食鱼类。此外，猎物的体型随着捕食者的体长呈显著增加趋势。这些结果表明，太平洋鳕鱼有一种灵活的喂养策略，因生活阶段而异。本文提供的关于捕食者-猎物关系的最新信息提高了我们对海洋生态系统中能量流动的理解，并有助于制定基于生态系统的渔业管理战略。
{"title":"Summer diet and feeding strategy of Pacific cod (Gadus macrocephalus) inhabiting the southern coast of Hokkaido, Japan","authors":"Rongfu Wang, M. Chimura, K. Sadayasu, Mitsuhiro Ishino, O. Yamamura","doi":"10.1080/17451000.2022.2147948","DOIUrl":"https://doi.org/10.1080/17451000.2022.2147948","url":null,"abstract":"ABSTRACT The ontogenetic and interannual variations in the diet and feeding strategy of Pacific cod (Gadus macrocephalus) were examined based on 1302 specimens collected by a trawling net off the southern coast of Hokkaido from late June to early July during 2016–2020. The diet comprised 63 species (13 taxa). Fish was the most important prey, followed by decapod crustaceans. In 2016, walleye pollock (Gadus chalcogrammus) was the dominant fish prey species, while amphipods, decapods and Japanese lanternfish (Notoscopelus japonicus) were prominent in the diet in 2017. Japanese sardine (Sardinops melanostictus) were more predominant during 2018–2020. An ontogenetic comparison of diet indicated that smaller individuals (≤400 mm standard length, SL) preyed mainly on small prey items, such as decapod crustaceans and polychaetes, whereas larger individuals (>400 mm SL) preyed mainly on fish. Moreover, prey size exhibited a significant increasing trend with predator body length. These results suggest that Pacific cod has a flexible feeding strategy that differs by life stage. The updated information on predator–prey relationships provided herein improves our understanding of energy flow in the marine ecosystem and could facilitate ecosystem-based fishery management strategies.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45104922","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}
Pub Date : 2022-09-14DOI: 10.1080/17451000.2022.2147951
V. Bjørdal, Herdis L. Mørk, K. Utne, A. Fernö, L. Nøttestad
ABSTRACT The North-east Atlantic mackerel stock size increased substantially from 2006–2014 coinciding with high recruitment. This resulted in a pronounced northerly geographic expansion of mackerel, followed by an influx of juvenile mackerel into Norwegian waters. The objective of this work was to study the diet and feeding intensity of juvenile mackerel at the new nursing grounds along the Norwegian coast during the summer. Juvenile mackerel were feeding as far north as 70°N. Stomach content was analysed for the first time from co-occurring juvenile and adult mackerel at the same locations. Almost 80% of all juvenile mackerel had prey in their stomachs, and juveniles had similar stomach fullness as adult mackerel in the same areas. The juveniles preyed on a wide variety of prey species and seemed to utilize both passive filter feeding and active particulate feeding. The most abundant prey group was Appendicularia, accounting for 31% of the stomach content by weight. Juveniles fed on similar prey species as adults, but their diet niche differed somewhat as adult mackerel fed more on krill. Juvenile mackerel can thus successfully survive and feed on various prey in high latitudes and can potentially be a feeding competitor to other planktivorous fish species in the area.
{"title":"The diet of juvenile Atlantic mackerel (Scomber scombrus) feeding in new northern nursery areas along the Norwegian coast","authors":"V. Bjørdal, Herdis L. Mørk, K. Utne, A. Fernö, L. Nøttestad","doi":"10.1080/17451000.2022.2147951","DOIUrl":"https://doi.org/10.1080/17451000.2022.2147951","url":null,"abstract":"ABSTRACT The North-east Atlantic mackerel stock size increased substantially from 2006–2014 coinciding with high recruitment. This resulted in a pronounced northerly geographic expansion of mackerel, followed by an influx of juvenile mackerel into Norwegian waters. The objective of this work was to study the diet and feeding intensity of juvenile mackerel at the new nursing grounds along the Norwegian coast during the summer. Juvenile mackerel were feeding as far north as 70°N. Stomach content was analysed for the first time from co-occurring juvenile and adult mackerel at the same locations. Almost 80% of all juvenile mackerel had prey in their stomachs, and juveniles had similar stomach fullness as adult mackerel in the same areas. The juveniles preyed on a wide variety of prey species and seemed to utilize both passive filter feeding and active particulate feeding. The most abundant prey group was Appendicularia, accounting for 31% of the stomach content by weight. Juveniles fed on similar prey species as adults, but their diet niche differed somewhat as adult mackerel fed more on krill. Juvenile mackerel can thus successfully survive and feed on various prey in high latitudes and can potentially be a feeding competitor to other planktivorous fish species in the area.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42976886","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}
Pub Date : 2022-08-01DOI: 10.1080/17451000.2022.2101122
Imana Pal, C. Bose
{"title":"Spirulina- a marine miracle for sustainable food system","authors":"Imana Pal, C. Bose","doi":"10.1080/17451000.2022.2101122","DOIUrl":"https://doi.org/10.1080/17451000.2022.2101122","url":null,"abstract":"","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43858726","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}
Pub Date : 2022-07-03DOI: 10.1080/17451000.2022.2120202
U. Karadurmuş
ABSTRACT This study aimed to investigate the recolonization behaviour of the rapa whelk (Rapana venosa) and the common starfish (Asterias rubens) on the mussel beds in their natural habitat. The monitoring studies were carried out seasonally on an island covered by a complete mussel bed in the Sea of Marmara (Turkey) between 19 October 2020 and 9 August 2021. Inhabitant rapa whelk and common starfish on the experimental study island (ESI) were tagged, then moved 10 m away from ESI. The recolonization potential of tagged invaders was monitored for 14 days with underwater surveys after their local eradication each season. The percentage of returned rapa whelk to the ESI was higher than common starfish end of the monitoring period. Rapa whelk moved non-stop towards the mussel bed, reaching the ESI at the latest 6th hour. Common starfish reached the mussel bed much later (at the 15th hour) than rapa whelk. The common starfish began to leave the ESI at the end of the 7th day, while the rapa whelk addicted to the ESI for 14 days. Re-invasion behaviour varied significantly seasonally, and both invaders reached the ESI much later in winter. During the monitoring periods, the highest invader densities were seen in the patches with the most abundant mussels, indicating continued uninterrupted feeding. The re-invasion duration and daily feeding activities support the spread of these invaders and could be considered a threat to marine resources.
{"title":"Recolonization behavior of rapa whelk (Rapana venosa) and common starfish (Asterias rubens) eradicated from mussel bed","authors":"U. Karadurmuş","doi":"10.1080/17451000.2022.2120202","DOIUrl":"https://doi.org/10.1080/17451000.2022.2120202","url":null,"abstract":"ABSTRACT This study aimed to investigate the recolonization behaviour of the rapa whelk (Rapana venosa) and the common starfish (Asterias rubens) on the mussel beds in their natural habitat. The monitoring studies were carried out seasonally on an island covered by a complete mussel bed in the Sea of Marmara (Turkey) between 19 October 2020 and 9 August 2021. Inhabitant rapa whelk and common starfish on the experimental study island (ESI) were tagged, then moved 10 m away from ESI. The recolonization potential of tagged invaders was monitored for 14 days with underwater surveys after their local eradication each season. The percentage of returned rapa whelk to the ESI was higher than common starfish end of the monitoring period. Rapa whelk moved non-stop towards the mussel bed, reaching the ESI at the latest 6th hour. Common starfish reached the mussel bed much later (at the 15th hour) than rapa whelk. The common starfish began to leave the ESI at the end of the 7th day, while the rapa whelk addicted to the ESI for 14 days. Re-invasion behaviour varied significantly seasonally, and both invaders reached the ESI much later in winter. During the monitoring periods, the highest invader densities were seen in the patches with the most abundant mussels, indicating continued uninterrupted feeding. The re-invasion duration and daily feeding activities support the spread of these invaders and could be considered a threat to marine resources.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59930917","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}
Pub Date : 2022-07-03DOI: 10.1080/17451000.2022.2105893
P. Hernáez, M. Pinheiro, Flavio de Almeida Alves-Júnior, W. Santana
ABSTRACT An annotated checklist of the intertidal species of burrowing shrimps of the Brazilian coast is provided from samples collected during latitudinal research expeditions between 2015 and 2018. A total of 1166 specimens of nine species were collected in these expeditions. These species are listed by infraorder and family as follows: Axiidea: Callianassidae (Biffarius botterae), Callichiridae (Audacallichirus mirim, Callichirus corruptus, Lepidophthalmus siriboia, Neocallichirus guara, N. maryae, N. pinheiroi); Gebiidea: Axianassidae (Axianassa australis), Upogebiidae (Upogebia omissa). For each species, the diagnostic features, distribution and habitat are recorded. The taxonomic information is discussed and compared with the information reported in literature for each taxon.
{"title":"Intertidal burrowing shrimps (Axiidea: Callianassidae, Callichiridae; Gebiidea: Axiannassidae, Upogebiidae) collected along the Brazilian coast","authors":"P. Hernáez, M. Pinheiro, Flavio de Almeida Alves-Júnior, W. Santana","doi":"10.1080/17451000.2022.2105893","DOIUrl":"https://doi.org/10.1080/17451000.2022.2105893","url":null,"abstract":"ABSTRACT An annotated checklist of the intertidal species of burrowing shrimps of the Brazilian coast is provided from samples collected during latitudinal research expeditions between 2015 and 2018. A total of 1166 specimens of nine species were collected in these expeditions. These species are listed by infraorder and family as follows: Axiidea: Callianassidae (Biffarius botterae), Callichiridae (Audacallichirus mirim, Callichirus corruptus, Lepidophthalmus siriboia, Neocallichirus guara, N. maryae, N. pinheiroi); Gebiidea: Axianassidae (Axianassa australis), Upogebiidae (Upogebia omissa). For each species, the diagnostic features, distribution and habitat are recorded. The taxonomic information is discussed and compared with the information reported in literature for each taxon.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43083542","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}
Pub Date : 2022-07-03DOI: 10.1080/17451000.2022.2123521
Christian Polo, B. Moreno, Yessenia Arroyo, B. Cóndor-Luján
ABSTRACT The warm temperate South-east Pacific coast hosts extensive kelp forests that provide protected habitats to benthic organisms such as sponges. To soundly understand the interactions between kelps and sponges, a prior taxonomic identification of the associated species is necessary. This study aimed to report cryptic sponges found associated with the inner walls of the holdfast of the kelp Lessonia trabeculata, opportunistically collected in the upwelling area of San Juan de Marcona (15°S, Peru). Three sponges were identified including one Calcarea, Clathrina antofagastensis, and two Demospongiae, Johannesia reticulosa and Haliclona (Halichoclona) paracas. None of them was previously known to occur associated with kelps. These findings highlight the importance of exploring these less-studied (biogenic) substrates to uncover hidden marine biodiversity and the need for observational or experimental studies addressing the interactions developed between kelps and their epiphytozoans.
暖温带的东南太平洋海岸拥有广阔的海带森林，为海绵等底栖生物提供了受保护的栖息地。为了更好地了解海带和海绵之间的相互作用，有必要先对相关物种进行分类鉴定。本研究旨在报道在San Juan de Marcona(15°S，秘鲁)上升流区偶然收集到的与小梁海带(Lessonia trabeculata)支架内壁相关的隐性海绵。鉴定出3种海绵，包括一种Calcarea (Clathrina antofagastensis)和两种demospongisa (Johannesia reticulosa)和Haliclona (Halichoclona) paracas。以前人们都不知道它们与海带有关。这些发现强调了探索这些研究较少的(生物源)底物以揭示隐藏的海洋生物多样性的重要性，以及对海带与其表层动物之间相互作用进行观察或实验研究的必要性。
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Pub Date : 2022-07-03DOI: 10.1080/17451000.2022.2131823
G. Sathyamoorthy, Thiruganasambandam Rajendran
ABSTRACT The present study aimed at investigating nitrogen stress-induced biochemical changes in the marine microalgae Chlorella salina. The algae were grown in N free medium (N − ) in order to study the proximate composition via the determination of protein, lipid and carbohydrate. The chemical constituents of this algae were determined using GC-MS and mineral content was analysed using Inductive Coupled Plasma-Mass Spectrometry (ICP-MS). From the results, the proximate analysis showed increased lipid (34.77 ± 0.6%), followed by carbohydrate (26.21 ± 0.2%) and protein (5.4% dry weight). The chemical constituents of C. salina were successively extracted with diethyl ether, hexane, chloroform, acetone and methanol. The extract percentage varied greatly between various solvents, with the highest one (4.68%) recorded for methanol. A total of 35 compounds were identified from the extracts and the identified chemical groups included ketones, terpenes, fatty acids (FA), fatty alcohols and esters derived fatty acids and/or dicarboxylic acid and hydrocarbons. The methanol extract consisted of FA (35%), amino acids and N-containing metabolites (7%), fatty alcohols (8%), organic acids (3%) and hydrocarbons (80%). The algae exhibited high amounts of Mg (54.079 mg/50 g) followed by C (17.341 mg/50 g), S (5.702 mg/50 g) and Na (3.275 mg/50 g). These results demonstrated a strong correlation between the nitrogen content and lipid accumulation, hence showing that Chlorella salina could serve as a potential candidate for biodiesel production.
{"title":"Growth and biochemical profiling of marine microalgae Chlorella salina with response to nitrogen starvation","authors":"G. Sathyamoorthy, Thiruganasambandam Rajendran","doi":"10.1080/17451000.2022.2131823","DOIUrl":"https://doi.org/10.1080/17451000.2022.2131823","url":null,"abstract":"ABSTRACT The present study aimed at investigating nitrogen stress-induced biochemical changes in the marine microalgae Chlorella salina. The algae were grown in N free medium (N − ) in order to study the proximate composition via the determination of protein, lipid and carbohydrate. The chemical constituents of this algae were determined using GC-MS and mineral content was analysed using Inductive Coupled Plasma-Mass Spectrometry (ICP-MS). From the results, the proximate analysis showed increased lipid (34.77 ± 0.6%), followed by carbohydrate (26.21 ± 0.2%) and protein (5.4% dry weight). The chemical constituents of C. salina were successively extracted with diethyl ether, hexane, chloroform, acetone and methanol. The extract percentage varied greatly between various solvents, with the highest one (4.68%) recorded for methanol. A total of 35 compounds were identified from the extracts and the identified chemical groups included ketones, terpenes, fatty acids (FA), fatty alcohols and esters derived fatty acids and/or dicarboxylic acid and hydrocarbons. The methanol extract consisted of FA (35%), amino acids and N-containing metabolites (7%), fatty alcohols (8%), organic acids (3%) and hydrocarbons (80%). The algae exhibited high amounts of Mg (54.079 mg/50 g) followed by C (17.341 mg/50 g), S (5.702 mg/50 g) and Na (3.275 mg/50 g). These results demonstrated a strong correlation between the nitrogen content and lipid accumulation, hence showing that Chlorella salina could serve as a potential candidate for biodiesel production.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46662369","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}
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