Pub Date : 2020-12-11DOI: 10.3989/scimar.05040.16a
Yamila González Giorgis, María Cruz Sueiro, F. Márquez
Understanding phenotypic plasticity of species at different spatial scales is vital in the current context of an increasing pace of environmental changes. Through this knowledge, it is possible to predict their potential to adapt and/or evolve in face of new environmental conditions such as climate change, and/or to understand their ecological range expansion. In Patagonian rocky salt-marshes, one of the most abundant invertebrate species is the scorched mussel Perumytilus purpuratus. In this system, this mussel can be found inhabiting both vegetated and non-vegetated patches, which differ in critical environmental conditions. We performed a field study evaluating whether mussels growing in vegetated patches differ in shell shape from those growing in adjacent non-vegetated patches. We sampled individuals from both patch types and assessed their shell shape and size using geometric morphometrics. The results showed that mussels from vegetated patches had shells that were more dorsoventrally expanded, anterodorsally restricted and globose in shape than those from non-vegetated patches, which showed the opposite traits resulting in a more elongated shell. The differences found could be driven by the different conditions of temperature, desiccation rate, wave action and population density to which mussels are exposed in each patch type. These results revealed the striking phenotypic plasticity of shell form of this native species at a fine-grained scale, which could be one of the explanations for its success in its ecological range expansion.
{"title":"Phenotypic plasticity at fine-grained spatial scales: the scorched mussel Perumytilus purpuratus growing on Patagonian rocky salt-marshes","authors":"Yamila González Giorgis, María Cruz Sueiro, F. Márquez","doi":"10.3989/scimar.05040.16a","DOIUrl":"https://doi.org/10.3989/scimar.05040.16a","url":null,"abstract":"Understanding phenotypic plasticity of species at different spatial scales is vital in the current context of an increasing pace of environmental changes. Through this knowledge, it is possible to predict their potential to adapt and/or evolve in face of new environmental conditions such as climate change, and/or to understand their ecological range expansion. In Patagonian rocky salt-marshes, one of the most abundant invertebrate species is the scorched mussel Perumytilus purpuratus. In this system, this mussel can be found inhabiting both vegetated and non-vegetated patches, which differ in critical environmental conditions. We performed a field study evaluating whether mussels growing in vegetated patches differ in shell shape from those growing in adjacent non-vegetated patches. We sampled individuals from both patch types and assessed their shell shape and size using geometric morphometrics. The results showed that mussels from vegetated patches had shells that were more dorsoventrally expanded, anterodorsally restricted and globose in shape than those from non-vegetated patches, which showed the opposite traits resulting in a more elongated shell. The differences found could be driven by the different conditions of temperature, desiccation rate, wave action and population density to which mussels are exposed in each patch type. These results revealed the striking phenotypic plasticity of shell form of this native species at a fine-grained scale, which could be one of the explanations for its success in its ecological range expansion.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47451790","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 : 2020-12-11DOI: 10.3989/scimar.05046.30a
Roi Martínez-Escauriaza, M. Hermida, S. Villasante, L. Gouveia, N. Gouveia, Pablo Pita
1 Oceanic Observatory of Madeira, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação. Edifício Madeira Tecnopolo, Piso 0, Caminho da Penteada, 9020-105 Funchal, Madeira, Portugal. (RM-E) (Corresponding author). E-mail: roimartinez@hotmail.com. ORCID iD: https://orcid.org/0000-0003-1219-9937 (MH) E-mail: margarida.hermida@mare-centre.pt. ORCID iD: https://orcid.org/ 0000-0002-0259-109X 2 Direção de Serviços de Investigação – DSI, Direção Regional das Pescas – DRP-RAM, Estrada da Pontinha, CP 9004562, Funchal, Madeira, Portugal. (LG) E-mail: lidia.gouveia@gov.madeira.pt. ORCID iD: https://orcid.org/ 0000-0001-6904-7673 (NG) E-mail: nuno.gouveia@madeira.gov.pt. ORCID iD: https://orcid.org/0000-0003-4633-4674 3 MARE Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação, Tecnologia e Inovação (ARDITI), Edifício Madeira Tecnopolo, Caminho da Penteada, 9020-105, Funchal, Madeira, Portugal. 4 Campus Do Mar, International Campus of Excellence, Spain. (SV) E-mail: sebastian.villasante@usc.es. ORCID iD: https://orcid.org/0000-0001-6296-4479 (PP) E-mail: pablo.pita@usc.es. ORCID iD: https://orcid.org/0000-0001-9273-1481 5 Faculty of Political and Social Sciences, Av. Angel Echevarry s/n, 15782 Santiago de Compostela, Spain.
1马德拉海洋观测站，研究技术和创新发展区域机构。Edifício Madeira Tecnopolo，Piso 0，Caminho da Penteada，葡萄牙马德拉丰沙尔9020-105。（RM-E）（通讯作者）。电子邮件：roimartinez@hotmail.com.ORCID iD：https://orcid.org/0000-0003-1219-9937（MH）电子邮件：margarida.hermida@mare-centre.pt.ORCID iD：https://orcid.org/0000-0002-0259-109X 2研究服务局DSI，区域渔业局DRP-RAM，Estrada da Pontinha，CP 9004562，丰沙尔，马德拉，葡萄牙。（LG）电子邮件：lidia.gouveia@gov.madeira.pt.ORCID iD：https://orcid.org/0000-0001-6904-7673（NG）电子邮件：nuno.gouveia@madeira.gov.pt.ORCID iD：https://orcid.org/0000-0003-4633-46743 MARE海洋与环境科学中心，区域研究、技术和创新发展局（ARDITI），Edifício Madeira Tecnopolo，Caminho da Penteada，9020-105，葡萄牙马德拉丰沙尔。4 Campus Do Mar，国际卓越校园，西班牙。（SV）电子邮件：sebastian.villasante@usc.es.ORCID iD：https://orcid.org/0000-0001-6296-4479（PP）电子邮件：pablo.pita@usc.es.ORCID iD：https://orcid.org/0000-0001-9273-14815政治和社会科学学院，Av。安吉尔·埃切瓦里，15782年，西班牙圣地亚哥德孔波斯特拉。
{"title":"Importance of recreational shore angling in the archipelago of Madeira, Portugal (northeast Atlantic)","authors":"Roi Martínez-Escauriaza, M. Hermida, S. Villasante, L. Gouveia, N. Gouveia, Pablo Pita","doi":"10.3989/scimar.05046.30a","DOIUrl":"https://doi.org/10.3989/scimar.05046.30a","url":null,"abstract":"1 Oceanic Observatory of Madeira, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação. Edifício Madeira Tecnopolo, Piso 0, Caminho da Penteada, 9020-105 Funchal, Madeira, Portugal. (RM-E) (Corresponding author). E-mail: roimartinez@hotmail.com. ORCID iD: https://orcid.org/0000-0003-1219-9937 (MH) E-mail: margarida.hermida@mare-centre.pt. ORCID iD: https://orcid.org/ 0000-0002-0259-109X 2 Direção de Serviços de Investigação – DSI, Direção Regional das Pescas – DRP-RAM, Estrada da Pontinha, CP 9004562, Funchal, Madeira, Portugal. (LG) E-mail: lidia.gouveia@gov.madeira.pt. ORCID iD: https://orcid.org/ 0000-0001-6904-7673 (NG) E-mail: nuno.gouveia@madeira.gov.pt. ORCID iD: https://orcid.org/0000-0003-4633-4674 3 MARE Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação, Tecnologia e Inovação (ARDITI), Edifício Madeira Tecnopolo, Caminho da Penteada, 9020-105, Funchal, Madeira, Portugal. 4 Campus Do Mar, International Campus of Excellence, Spain. (SV) E-mail: sebastian.villasante@usc.es. ORCID iD: https://orcid.org/0000-0001-6296-4479 (PP) E-mail: pablo.pita@usc.es. ORCID iD: https://orcid.org/0000-0001-9273-1481 5 Faculty of Political and Social Sciences, Av. Angel Echevarry s/n, 15782 Santiago de Compostela, Spain.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41939853","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 : 2020-12-11DOI: 10.3989/scimar.05053.17a
P. Rehm, S. Thatje, F. Leese, C. Held
Phylogenetic hypotheses for the peracarid order Cumacea are scarce and have not provided a solution to the full extent. In the present study, a fragment of the mitochondrial 16S rDNA was used to erect a phylogenetic hypothesis for three cumacean families, Diastylidae, Bodotriidae and Leuconidae, along with intra-family relationships of the latter. The Cumacea resolved monophyletic with tanaids and isopods as outgroup taxa. The Diastylidae were the only family with good support for monophyly. The genus Leucon resolved paraphyletic, whereas the subgenus Crymoleucon was monophyletic. Furthermore, the genetic structure was analysed for two leuconid species, Leucon antarcticus Zimmer, 1907 and L. intermedius Mühlenhardt-Siegel, 1996, from the Weddell Sea and the Ross Sea. The two species showed different patterns of intraspecific genetic variability. In contrast to L. intermedius, a bimodal distribution of pairwise genetic distances was observed for L. antarcticus, which is correlated with geographical and depth distributions between the Ross Sea and the Weddell Sea. Although a clear evaluation of cryptic speciation in these species requires additional work on more specimens from more geographic regions and broader depth ranges, differences shown in the sequences of 16S rDNA can only be explained by genetic separation of populations between the Weddell Sea and the Ross Sea for an extended period of time.
过硬目Cumacea的系统发育假说很少，也没有提供一个完整的解决方案。本研究利用线粒体16S rDNA片段，建立了三个cumacean科(Diastylidae, Bodotriidae和Leuconidae)的系统发育假说，以及后者的家族内关系。Cumacea是单系的，以单足类和等足类为外群。唯一具有较好单系性支持的科是双翅亚科。Leucon属分解为单系，而Crymoleucon亚属分解为单系。此外，我们还分析了威德尔海和罗斯海的两个白鱼种Leucon antarcticus Zimmer(1907)和L. intermedius m hlenhardt- siegel(1996)的遗传结构。这两个物种表现出不同的种内遗传变异模式。与中间乳杆菌相反，南极乳杆菌的双遗传距离呈双峰分布，与罗斯海和威德尔海之间的地理和深度分布有关。虽然对这些物种的隐种形成进行明确的评估需要对更多地理区域和更广泛深度范围的更多标本进行额外的工作，但16S rDNA序列所显示的差异只能用威德尔海和罗斯海之间长时间种群的遗传分离来解释。
{"title":"Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae","authors":"P. Rehm, S. Thatje, F. Leese, C. Held","doi":"10.3989/scimar.05053.17a","DOIUrl":"https://doi.org/10.3989/scimar.05053.17a","url":null,"abstract":"Phylogenetic hypotheses for the peracarid order Cumacea are scarce and have not provided a solution to the full extent. In the present study, a fragment of the mitochondrial 16S rDNA was used to erect a phylogenetic hypothesis for three cumacean families, Diastylidae, Bodotriidae and Leuconidae, along with intra-family relationships of the latter. The Cumacea resolved monophyletic with tanaids and isopods as outgroup taxa. The Diastylidae were the only family with good support for monophyly. The genus Leucon resolved paraphyletic, whereas the subgenus Crymoleucon was monophyletic. Furthermore, the genetic structure was analysed for two leuconid species, Leucon antarcticus Zimmer, 1907 and L. intermedius Mühlenhardt-Siegel, 1996, from the Weddell Sea and the Ross Sea. The two species showed different patterns of intraspecific genetic variability. In contrast to L. intermedius, a bimodal distribution of pairwise genetic distances was observed for L. antarcticus, which is correlated with geographical and depth distributions between the Ross Sea and the Weddell Sea. Although a clear evaluation of cryptic speciation in these species requires additional work on more specimens from more geographic regions and broader depth ranges, differences shown in the sequences of 16S rDNA can only be explained by genetic separation of populations between the Weddell Sea and the Ross Sea for an extended period of time.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46248933","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 : 2020-12-11DOI: 10.3989/scimar.05051.14a
Everton Giachini Tosetto, S. Neumann-Leitão, M. Nogueira Júnior
1 Departamento de Oceanografia, Universidade Federal de Pernambuco, Avenida Arquitetura, S/N, 50670-901, Recife, PE, Brazil. (EGT) (Corresponding author) E-mail: evertontosetto@hotmail.com. ORCID iD: https://orcid.org/0000-0002-4020-0942 (SN-L) E-mail: sigridnl@uol.com.br. ORCID iD: https://orcid.org/0000-0001-7878-8772 2 Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Cidade Universitária, 58051-900, João Pessoa, PB, Brazil. (MNJ) E-mail: miodeli@gmail.com. ORCID iD: https://orcid.org/0000-0001-5409-8312
{"title":"New species of Eirenidae (Hydrozoa: Leptothecata) from the Amazonian coast (northern Brazil)","authors":"Everton Giachini Tosetto, S. Neumann-Leitão, M. Nogueira Júnior","doi":"10.3989/scimar.05051.14a","DOIUrl":"https://doi.org/10.3989/scimar.05051.14a","url":null,"abstract":"1 Departamento de Oceanografia, Universidade Federal de Pernambuco, Avenida Arquitetura, S/N, 50670-901, Recife, PE, Brazil. (EGT) (Corresponding author) E-mail: evertontosetto@hotmail.com. ORCID iD: https://orcid.org/0000-0002-4020-0942 (SN-L) E-mail: sigridnl@uol.com.br. ORCID iD: https://orcid.org/0000-0001-7878-8772 2 Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Cidade Universitária, 58051-900, João Pessoa, PB, Brazil. (MNJ) E-mail: miodeli@gmail.com. ORCID iD: https://orcid.org/0000-0001-5409-8312","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49478309","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 : 2020-12-11DOI: 10.3989/scimar.05029.15a
P. Berrebi, Marielle Trébuchon
Pomatoschistus marmoratus and Pomatoschistus microps are small sedentary gobies inhabiting the lagoons of European Mediterranean and Atlantic coasts. Along the French Mediterranean coast their respective geographical distribution is not precisely known, in part because they are cryptic species. In this study, 512 gobies of both species were caught as 17 samples in 12 lagoons of the Gulf of Lion on the French Mediterranean coast. They were genotyped at six microsatellite loci and investigated statistically using multidimensional analyses, Bayesian assignment (Structure) and NewHybrids classification. This allowed the contrasted distribution of each species (P. microps in the east, P. marmoratus in the west) to be described, with several exceptions. Neither geographic structure nor isolation by distance was detected among differentiated populations of each species. The suggested mechanism is a deep sedentary behaviour associated with foundations following extinctions. The two species are sympatric or even in syntopy in five or six sampled lagoons producing rare fertile hybrids.
{"title":"Distribution and hybridization of two sedentary gobies (Pomatoschistus microps and Pomatoschistus marmoratus) in the lagoons of southern France","authors":"P. Berrebi, Marielle Trébuchon","doi":"10.3989/scimar.05029.15a","DOIUrl":"https://doi.org/10.3989/scimar.05029.15a","url":null,"abstract":"Pomatoschistus marmoratus and Pomatoschistus microps are small sedentary gobies inhabiting the lagoons of European Mediterranean and Atlantic coasts. Along the French Mediterranean coast their respective geographical distribution is not precisely known, in part because they are cryptic species. In this study, 512 gobies of both species were caught as 17 samples in 12 lagoons of the Gulf of Lion on the French Mediterranean coast. They were genotyped at six microsatellite loci and investigated statistically using multidimensional analyses, Bayesian assignment (Structure) and NewHybrids classification. This allowed the contrasted distribution of each species (P. microps in the east, P. marmoratus in the west) to be described, with several exceptions. Neither geographic structure nor isolation by distance was detected among differentiated populations of each species. The suggested mechanism is a deep sedentary behaviour associated with foundations following extinctions. The two species are sympatric or even in syntopy in five or six sampled lagoons producing rare fertile hybrids.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44460833","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 : 2020-12-11DOI: 10.3989/scimar.05107.30a
M. Estrada, M. Alcaraz
Ramon Margalef López (1919-2004) was one of the most prominent scientists of the 20th century in the fields of limnology, oceanography and ecology. His contributions to theoretical ecology, which won him international recognition, were based on a great deal of laboratory and field work and on extensive observations of the natural world, a passion that he acquired at a young age. Some of the early papers of Ramon Margalef appeared in the Publicaciones del Instituto de Biología Aplicada, but as of 1955 many of his marine studies were published in Investigación Pesquera, the journal of the Instituto de Investigaciones Pesqueras of the CSIC in Barcelona. He also wrote several articles for Scientia Marina, the journal that replaced Investigación Pesquera in 1989 after the Instituto de Investigaciones Pesqueras became the Institut de Ciències del Mar. The present article aims to give an overview of Margalef’s contributions to these journals to mark the celebration in 2019 of the 100th anniversary of his birth.
Ramon Margalef López（1919-2004）是20世纪湖沼学、海洋学和生态学领域最杰出的科学家之一。他对理论生态学的贡献为他赢得了国际认可，这是基于大量的实验室和实地工作，以及对自然世界的广泛观察，这是他从小就获得的热情。Ramon Margalef的一些早期论文发表在Aplicada生物研究所的出版物上，但截至1955年，他的许多海洋研究都发表在巴塞罗那CSIC Pesqueras研究所的期刊Investigación Pesquera上。他还为《科学码头》杂志写了几篇文章，该杂志于1989年取代了《科学研究》杂志，当时《科学研究所》成为了《科学》杂志。本文旨在概述Margalef对这些期刊的贡献，以纪念2019年Margalef诞辰100周年。
{"title":"The publications of Ramon Margalef in Investigación Pesquera and Scientia Marina: The beginnings of marine ecology in the CSIC","authors":"M. Estrada, M. Alcaraz","doi":"10.3989/scimar.05107.30a","DOIUrl":"https://doi.org/10.3989/scimar.05107.30a","url":null,"abstract":"Ramon Margalef López (1919-2004) was one of the most prominent scientists of the 20th century in the fields of limnology, oceanography and ecology. His contributions to theoretical ecology, which won him international recognition, were based on a great deal of laboratory and field work and on extensive observations of the natural world, a passion that he acquired at a young age. Some of the early papers of Ramon Margalef appeared in the Publicaciones del Instituto de Biología Aplicada, but as of 1955 many of his marine studies were published in Investigación Pesquera, the journal of the Instituto de Investigaciones Pesqueras of the CSIC in Barcelona. He also wrote several articles for Scientia Marina, the journal that replaced Investigación Pesquera in 1989 after the Instituto de Investigaciones Pesqueras became the Institut de Ciències del Mar. The present article aims to give an overview of Margalef’s contributions to these journals to mark the celebration in 2019 of the 100th anniversary of his birth.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46986201","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 : 2020-12-11DOI: 10.3989/scimar.05091.24a
J. Gili, B. Vendrell-Simón, W. Arntz, F. Sabater, J. Ros
Benthic communities depend on receiving much of their food from the water column. While sinking, particles are transformed in a discontinuous process and are temporally retained in transitional physical structures, which act as boundaries and contribute to their further transformation. Motile organisms are well-acquainted with boundaries. The number, width and placement of boundaries are related to the degree of particle degradation or transformation. Progressively deepening within each boundary, particles are degraded according to their residence time in the discontinuity and the activity of the organisms temporarily inhabiting that boundary. Finally, particles reach the seafloor and represent the main food source for benthic organisms; the quality and quantity of this food have a strong impact on the development of benthic communities. However, benthic communities not only play the role of a sink of matter: they act as an active boundary comparable to other oceanic boundaries, in accordance with the boundary concept proposed by the ecologist Ramon Margalef.
{"title":"The benthos: the ocean’s last boundary?","authors":"J. Gili, B. Vendrell-Simón, W. Arntz, F. Sabater, J. Ros","doi":"10.3989/scimar.05091.24a","DOIUrl":"https://doi.org/10.3989/scimar.05091.24a","url":null,"abstract":"Benthic communities depend on receiving much of their food from the water column. While sinking, particles are transformed in a discontinuous process and are temporally retained in transitional physical structures, which act as boundaries and contribute to their further transformation. Motile organisms are well-acquainted with boundaries. The number, width and placement of boundaries are related to the degree of particle degradation or transformation. Progressively deepening within each boundary, particles are degraded according to their residence time in the discontinuity and the activity of the organisms temporarily inhabiting that boundary. Finally, particles reach the seafloor and represent the main food source for benthic organisms; the quality and quantity of this food have a strong impact on the development of benthic communities. However, benthic communities not only play the role of a sink of matter: they act as an active boundary comparable to other oceanic boundaries, in accordance with the boundary concept proposed by the ecologist Ramon Margalef.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44055174","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 : 2020-12-11DOI: 10.3989/scimar.05139.05a
V. Sbragaglia, R. Arlinghaus
We show that marine recreational spearfishers voluntarily organize bottom-up conservation actions. The main goals of these actions are to provide support to research in monitoring fish assemblages, tracking biological invasions or mitigating impacts on the environment, such as those stemming from pollution and littering. We show that such initiatives started more than 20 years ago and are now facilitated by social media networking. We argue that the emergence of bottom-up conservation actions in marine recreational spearfishers should be encouraged, supported and integrated into participatory management plans. This is important to mitigate the potential negative impacts of marine recreational spearfishing and to catalyse broader civil actions for conservation of marine ecosystems.
{"title":"Conservation bottom-up initiatives in marine recreational spearfishing suggest the emergence of positive attitudes towards conservation","authors":"V. Sbragaglia, R. Arlinghaus","doi":"10.3989/scimar.05139.05a","DOIUrl":"https://doi.org/10.3989/scimar.05139.05a","url":null,"abstract":"We show that marine recreational spearfishers voluntarily organize bottom-up conservation actions. The main goals of these actions are to provide support to research in monitoring fish assemblages, tracking biological invasions or mitigating impacts on the environment, such as those stemming from pollution and littering. We show that such initiatives started more than 20 years ago and are now facilitated by social media networking. We argue that the emergence of bottom-up conservation actions in marine recreational spearfishers should be encouraged, supported and integrated into participatory management plans. This is important to mitigate the potential negative impacts of marine recreational spearfishing and to catalyse broader civil actions for conservation of marine ecosystems.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47702420","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 : 2020-12-11DOI: 10.3989/scimar.05086.21a
Nastassia Uluduz, Alexey Yanchukov, M. Sözen
Zonguldak Bulent Ecevit University, Faculty of Arts and Science, Department of Biology, Laboratory of Molecular Systematics, 67100 İncivez/Zonguldak, Turkey. (NU) (Corresponding author) E-mail: nastassia.uluduz@gmail.com. ORCID iD https://orcid.org/0000-0002-7366-0267 (AY) E-mail: yawa33@gmail.com. ORCID iD https://orcid.org/0000-0002-9613-8770 (MS) E-mail: spalaxtr@hotmail.com. ORCID iD https://orcid.org/0000-0002-1911-605X
宗乌尔达克大学文理学院生物学系分子系统学实验室，67100 İncivez/土耳其宗乌尔达克。(NU)(通讯作者)E-mail: nastassia.uluduz@gmail.com。ORCID iD https://orcid.org/0000-0002-7366-0267 (AY)电子邮件:yawa33@gmail.com。cid iD https://orcid.org/0000-0002-9613-8770 (MS) E-mail: spalaxtr@hotmail.com。ORCID https://orcid.org/0000-0002-1911-605X
{"title":"Seasonal dynamics of occurrence and group size of three species of cetaceans (Delphinidae and Phocoenidae) on the southwestern coast of the Black Sea","authors":"Nastassia Uluduz, Alexey Yanchukov, M. Sözen","doi":"10.3989/scimar.05086.21a","DOIUrl":"https://doi.org/10.3989/scimar.05086.21a","url":null,"abstract":"Zonguldak Bulent Ecevit University, Faculty of Arts and Science, Department of Biology, Laboratory of Molecular Systematics, 67100 İncivez/Zonguldak, Turkey. (NU) (Corresponding author) E-mail: nastassia.uluduz@gmail.com. ORCID iD https://orcid.org/0000-0002-7366-0267 (AY) E-mail: yawa33@gmail.com. ORCID iD https://orcid.org/0000-0002-9613-8770 (MS) E-mail: spalaxtr@hotmail.com. ORCID iD https://orcid.org/0000-0002-1911-605X","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43331265","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 : 2020-12-11DOI: 10.3989/scimar.05081.20a
M. Rajeeshkumar, Kannamkulathil Vijayan Aneesh Kumar, J. L. Otero-Ferrer, A. Lombarte, M. Hashim, N. Saravanane, Veloorkirakathil Narayanan Sanjeevan, Mallavarapu Venkata Ramana Murthy, Víctor Manuel Tuset
Anglerfishes are widely distributed from shallow to deep-water habitats occupying different ecological niches. To explain this adaptability, we performed a morpho-functional study on common benthic anglerfishes inhabiting the Indian deep-sea waters. Sensory capabilities of species were examined using the morphology and morphometry of sagitta otoliths (related to detection sound and hearing) and eye size (related to visual communication). We also performed an analysis of the degree of functional niche overlap using fish body traits to understand the coexistence of species. Otoliths showed a morphological pattern similar to that of other anglerfishes: an archaesulcoid sulcus acusticus and variability in the irregularity of the dorsal margin. This last feature affected the allometric relationships between the otolith morphometry and fish length, as well as the otolith relative sizes of each species. The findings suggested that bigger otoliths are associated with the increase of depth distribution of species up to 1000 m, from which it decreases. Our hypothesis is that anglerfishes with irregular otolith shapes could be linked to more nocturnal feeding behaviour because they were characterized by greater eye sizes. The results also indicated interspecific significant differences in functional traits providing a low niche overlap. Therefore, our study supports the hypothesis of an environmental and ecological specialization of benthic anglerfishes.
{"title":"Differentiating morpho-functional patterns of the five most common deep-sea benthic anglerfishes (Lophiiformes) from Andaman and Nicobar Islands (eastern Indian Ocean)","authors":"M. Rajeeshkumar, Kannamkulathil Vijayan Aneesh Kumar, J. L. Otero-Ferrer, A. Lombarte, M. Hashim, N. Saravanane, Veloorkirakathil Narayanan Sanjeevan, Mallavarapu Venkata Ramana Murthy, Víctor Manuel Tuset","doi":"10.3989/scimar.05081.20a","DOIUrl":"https://doi.org/10.3989/scimar.05081.20a","url":null,"abstract":"Anglerfishes are widely distributed from shallow to deep-water habitats occupying different ecological niches. To explain this adaptability, we performed a morpho-functional study on common benthic anglerfishes inhabiting the Indian deep-sea waters. Sensory capabilities of species were examined using the morphology and morphometry of sagitta otoliths (related to detection sound and hearing) and eye size (related to visual communication). We also performed an analysis of the degree of functional niche overlap using fish body traits to understand the coexistence of species. Otoliths showed a morphological pattern similar to that of other anglerfishes: an archaesulcoid sulcus acusticus and variability in the irregularity of the dorsal margin. This last feature affected the allometric relationships between the otolith morphometry and fish length, as well as the otolith relative sizes of each species. The findings suggested that bigger otoliths are associated with the increase of depth distribution of species up to 1000 m, from which it decreases. Our hypothesis is that anglerfishes with irregular otolith shapes could be linked to more nocturnal feeding behaviour because they were characterized by greater eye sizes. The results also indicated interspecific significant differences in functional traits providing a low niche overlap. Therefore, our study supports the hypothesis of an environmental and ecological specialization of benthic anglerfishes.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45287624","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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