Pub Date : 2022-04-07DOI: 10.3989/scimar.05240.025
J. Mir-Arguimbau, Paloma Martín, M. Balcells, Joan Sala-Coromina, A. Sabatés
This study characterized the fishery dynamics of blue whiting, a bycatch species of the bottom trawl Norway lobster fishery, in the NW Mediterranean. Landings and effort data over the last two decades were combined with current information on the spatial distribution of effort and catch, and with the size and age structure of blue whiting over the year. Recruitment to the demersal habitat occurred from 5 cm total length (TL) over the shelf break in spring (April-May), when discards showed the highest values (>95% of the catch). Adults were located over the upper slope, and large individuals (≥26 cm TL) were abundant during the reproductive period (January-March). A decline in landings has been observed in the last decade, probably related to the absence of intense deep convection processes in winter since 2013, which favour recruitment of the species. The effect of exploitation on the decrease in landings cannot be disregarded considering that the bulk of the catch is made up of immature (age 0) individuals, and the presence of old individuals is very low.
本研究描述了地中海西北部蓝白鲸的渔业动态，蓝白鲸是挪威底拖网龙虾渔业的副渔获物种。过去二十年的渔获量和渔获量数据与当前的渔获量和渔获量空间分布信息以及蓝白鲸的大小和年龄结构相结合。在春季(4 - 5月)陆架断裂后的5 cm总长度(TL)处，抛弃物数量最多(约占渔获量的95%)。成虫分布在斜坡上部，在繁殖期(1 ~ 3月)有大量大个体(≥26 cm TL)。在过去十年中，已经观察到登陆数量的下降，这可能与2013年以来冬季缺乏强烈的深层对流过程有关，而深层对流过程有利于物种的补充。考虑到大部分渔获是由未成熟(0岁)的个体组成，而老年个体的存在非常低，开发对登陆数量减少的影响是不能忽视的。
{"title":"Fishery dynamics of blue whiting, Micromesistius poutassou, a highly discarded bycatch species in the NW Mediterranean Sea","authors":"J. Mir-Arguimbau, Paloma Martín, M. Balcells, Joan Sala-Coromina, A. Sabatés","doi":"10.3989/scimar.05240.025","DOIUrl":"https://doi.org/10.3989/scimar.05240.025","url":null,"abstract":"This study characterized the fishery dynamics of blue whiting, a bycatch species of the bottom trawl Norway lobster fishery, in the NW Mediterranean. Landings and effort data over the last two decades were combined with current information on the spatial distribution of effort and catch, and with the size and age structure of blue whiting over the year. Recruitment to the demersal habitat occurred from 5 cm total length (TL) over the shelf break in spring (April-May), when discards showed the highest values (>95% of the catch). Adults were located over the upper slope, and large individuals (≥26 cm TL) were abundant during the reproductive period (January-March). A decline in landings has been observed in the last decade, probably related to the absence of intense deep convection processes in winter since 2013, which favour recruitment of the species. The effect of exploitation on the decrease in landings cannot be disregarded considering that the bulk of the catch is made up of immature (age 0) individuals, and the presence of old individuals is very low.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43109337","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 : 2021-12-07DOI: 10.3989/scimar.05180.022
Roi Martínez-Escauriaza, F. Gizzi, L. Gouveia, N. Gouveia, M. Hermida
Small-scale recreational and artisanal fisheries are popular activities in the Autonomous Region of Madeira, and to date no information is available on their impact on regional coastal ecosystems. Through fishers’ surveys and official registers of fish landings, we described and characterized these fisheries in Madeira, comparing artisanal and recreational fisheries. In 2017, artisanal boats landed 91 species in fishing ports, while recreational catches landed 58 species. The most frequent catches were Dentex gibbosus, Phycis phycis and Pagrus pagrus for artisanal fishery and P. pagrus, Serranus atricauda and Diplodus spp. for recreational fishery. Comparing the same techniques, artisanal fishery always showed higher catch per unit effort values than recreational boat fishery. Nevertheless, the low number of artisanal fishery boats in comparison with the recreational ones reflected the lower total landings of the artisanal fishery, which in 2017 were 62.3 t, compared with the 509.8 t estimated catches for the recreational fishery. Though the estimated recreational fishing data were based on surveys and thus subject to various biases, this activity seems to negatively affect coastal ecosystems and, together with artisanal fishing, exerts a combined pressure on targeted species. Improved legislation for both fisheries is essential for an appropriate management of resources.
{"title":"Small-scale fisheries in Madeira: recreational vs artisanal fisheries","authors":"Roi Martínez-Escauriaza, F. Gizzi, L. Gouveia, N. Gouveia, M. Hermida","doi":"10.3989/scimar.05180.022","DOIUrl":"https://doi.org/10.3989/scimar.05180.022","url":null,"abstract":"Small-scale recreational and artisanal fisheries are popular activities in the Autonomous Region of Madeira, and to date no information is available on their impact on regional coastal ecosystems. Through fishers’ surveys and official registers of fish landings, we described and characterized these fisheries in Madeira, comparing artisanal and recreational fisheries. In 2017, artisanal boats landed 91 species in fishing ports, while recreational catches landed 58 species. The most frequent catches were Dentex gibbosus, Phycis phycis and Pagrus pagrus for artisanal fishery and P. pagrus, Serranus atricauda and Diplodus spp. for recreational fishery. Comparing the same techniques, artisanal fishery always showed higher catch per unit effort values than recreational boat fishery. Nevertheless, the low number of artisanal fishery boats in comparison with the recreational ones reflected the lower total landings of the artisanal fishery, which in 2017 were 62.3 t, compared with the 509.8 t estimated catches for the recreational fishery. Though the estimated recreational fishing data were based on surveys and thus subject to various biases, this activity seems to negatively affect coastal ecosystems and, together with artisanal fishing, exerts a combined pressure on targeted species. Improved legislation for both fisheries is essential for an appropriate management of resources.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43966094","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 : 2021-12-07DOI: 10.3989/scimar.05110.020
Carles Roqué Pau, Mario Zarroca Hernández, Rogelio Linares Santiago
This article describes the geomorphological and petrological characteristics of 19 submerged beachrocks located on the north Catalan coast (western Mediterranean Sea). Their length ranges between 8 and 1039 m, their width between 1.5 and 86.5 m and their thickness between 0.4 and 3.25 m. They are siliciclastic beachrocks consisting of well-rounded gravels with a very coarse sand matrix, and they have a low proportion of bioclasts (<1%). Cementation occurred in the swash zone and adjacent foreshore due to the precipitation of high magnesium calcite. From absolute dates (14C and optically stimulated luminescence) and anthropic artifacts, three phases of formation attributable to the Late Holocene were identified. Phase I corresponds to the warm and humid Roman Period and was recorded at a level below -3.75 m mean sea level (MSL). Phase II corresponds to the warm and arid Medieval Climate Anomaly and was recorded at +0.25 m to -2.5 m MSL. Phase III corresponds to the Little Ice Age and Industrial Period and was recorded at levels ranging from +0.5 m to -3.0 m MSL. Good temporal correspondence between the chronology of the cementation phases and warm and/or dry palaeoclimatic conditions can be established.
本文描述了位于北加泰罗尼亚海岸(地中海西部)的19个淹没滩岩的地貌和岩石学特征。它们的长度在8至1039米之间，宽度在1.5至86.5米之间，厚度在0.4至3.25米之间。它们是由圆润的砾石和非常粗糙的砂基质组成的硅屑滩岩，生物碎屑的比例很低(<1%)。由于高镁方解石的沉淀，冲积带和邻近的前滨发生了胶结作用。根据绝对年代(14C和光学激发发光)和人为文物，确定了晚全新世的三个形成阶段。第一阶段对应于温暖湿润的罗马时期，记录在平均海平面低于-3.75 m (MSL)。第II期对应于温暖干旱的中世纪气候异常，记录在+0.25 m ~ -2.5 m MSL。第三阶段对应于小冰期和工业时期，记录的水位范围为+0.5 m至-3.0 m MSL。胶结期年代学与温暖和/或干燥的古气候条件之间具有良好的时间对应关系。
{"title":"Geochronology and palaeoclimatic context of submerged siliciclastic beachrock formation in the western Mediterranean Sea","authors":"Carles Roqué Pau, Mario Zarroca Hernández, Rogelio Linares Santiago","doi":"10.3989/scimar.05110.020","DOIUrl":"https://doi.org/10.3989/scimar.05110.020","url":null,"abstract":"This article describes the geomorphological and petrological characteristics of 19 submerged beachrocks located on the north Catalan coast (western Mediterranean Sea). Their length ranges between 8 and 1039 m, their width between 1.5 and 86.5 m and their thickness between 0.4 and 3.25 m. They are siliciclastic beachrocks consisting of well-rounded gravels with a very coarse sand matrix, and they have a low proportion of bioclasts (<1%). Cementation occurred in the swash zone and adjacent foreshore due to the precipitation of high magnesium calcite. From absolute dates (14C and optically stimulated luminescence) and anthropic artifacts, three phases of formation attributable to the Late Holocene were identified. Phase I corresponds to the warm and humid Roman Period and was recorded at a level below -3.75 m mean sea level (MSL). Phase II corresponds to the warm and arid Medieval Climate Anomaly and was recorded at +0.25 m to -2.5 m MSL. Phase III corresponds to the Little Ice Age and Industrial Period and was recorded at levels ranging from +0.5 m to -3.0 m MSL. Good temporal correspondence between the chronology of the cementation phases and warm and/or dry palaeoclimatic conditions can be established.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48078425","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 : 2021-09-02DOI: 10.3989/scimar.05167.016
D. Malara, F. Longo, L. Pagano, M. Stipa, T. Romeo, F. Andaloro, S. Greco, P. Battaglia
This is the first paper to provide detailed information on the age and growth of Trachinotus ovatus. The size of the 244 individuals collected in the Strait of Messina ranged from 2.7 to 30.4 cm in fork length (LF) and 0.31 to 508.6 g in body mass (M). The relationship between these parameters (M - LF) was investigated and showed a good fit. Age estimation based on vertebrae and otoliths yielded similar results, suggesting a maximum age of five years. However, the precision and accuracy tests, such as percentage of agreement (PA), mean coefficient of variation (ACV) and average percent error (APE) indicated that the otolith readings (97.83% PA, 0.54% ACV and 0.38% APE) were more reliable for age estimation than vertebrae readings (82.17% PA, 5.33% ACV and 3.77% APE). The multi-model inference approach allowed us to compare different non-linear growth models. The von Bertalanffy model (L∞=29.139, k=0.496 and t0=−0.347) fitted the length-at-age data best. This species has a relatively rapid growth and an estimated longevity of five to seven years. This information could be used for management and first stock assessment studies on T. ovatus in the Mediterranean Sea.
{"title":"Age and growth of pompano, Trachinotus ovatus, from the Strait of Messina (central Mediterranean Sea)","authors":"D. Malara, F. Longo, L. Pagano, M. Stipa, T. Romeo, F. Andaloro, S. Greco, P. Battaglia","doi":"10.3989/scimar.05167.016","DOIUrl":"https://doi.org/10.3989/scimar.05167.016","url":null,"abstract":"This is the first paper to provide detailed information on the age and growth of Trachinotus ovatus. The size of the 244 individuals collected in the Strait of Messina ranged from 2.7 to 30.4 cm in fork length (LF) and 0.31 to 508.6 g in body mass (M). The relationship between these parameters (M - LF) was investigated and showed a good fit. Age estimation based on vertebrae and otoliths yielded similar results, suggesting a maximum age of five years. However, the precision and accuracy tests, such as percentage of agreement (PA), mean coefficient of variation (ACV) and average percent error (APE) indicated that the otolith readings (97.83% PA, 0.54% ACV and 0.38% APE) were more reliable for age estimation than vertebrae readings (82.17% PA, 5.33% ACV and 3.77% APE). The multi-model inference approach allowed us to compare different non-linear growth models. The von Bertalanffy model (L∞=29.139, k=0.496 and t0=−0.347) fitted the length-at-age data best. This species has a relatively rapid growth and an estimated longevity of five to seven years. This information could be used for management and first stock assessment studies on T. ovatus in the Mediterranean Sea.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48637636","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 : 2021-09-02DOI: 10.3989/scimar.05185.018
S. Yedier, D. Bostancı
This study was conducted to discriminate five Scorpaena species and populations of each species according to morphometric characters. A total of 1865 fish specimens were collected from the eight locations in the four Turkish seas: Antalya, Balıkesir, Çanakkale, Hatay, İzmir, Marmara Ereğlisi, Ordu and Şile. In the study, 26 morphometric traits were measured for intra- and interspecific discrimination of five Scorpaena species. The data were subjected to analysis of variance, principal components analysis (PCA) and canonical discriminant analysis. As results of the PCA, 10 traits for S. maderensis and S. scrofa, 12 traits for S. elongata and 13 traits for S. notata and S. porcus were found to be important for intraspcific discrimination. The overall classification scores of intraspecific discrimination were determined as 94.6% for S. elongata, 90.5% for S. maderensis, 96.7% for S. notata, 96.5% for S. porcus and 92.2% for S. scrofa. The PCA indicated that 13 morphometric measurements among the 26 traits are important in the interspecific discrimination of five Scorpaena species. The cross-validated canonical discriminant analysis was correctly classified as 97.4% at the Scorpaena species level. The discrimination of correctly classified species ranged from 94.8% to 100%. Finally, we demonstrated that the morphometric characters examined in the present study can be used successfully in the intra- and interspecific discrimination of Scorpaena species from different habitats.
{"title":"Intra- and interspecific discrimination of Scorpaena species from the Aegean, Black, Mediterranean and Marmara seas","authors":"S. Yedier, D. Bostancı","doi":"10.3989/scimar.05185.018","DOIUrl":"https://doi.org/10.3989/scimar.05185.018","url":null,"abstract":"This study was conducted to discriminate five Scorpaena species and populations of each species according to morphometric characters. A total of 1865 fish specimens were collected from the eight locations in the four Turkish seas: Antalya, Balıkesir, Çanakkale, Hatay, İzmir, Marmara Ereğlisi, Ordu and Şile. In the study, 26 morphometric traits were measured for intra- and interspecific discrimination of five Scorpaena species. The data were subjected to analysis of variance, principal components analysis (PCA) and canonical discriminant analysis. As results of the PCA, 10 traits for S. maderensis and S. scrofa, 12 traits for S. elongata and 13 traits for S. notata and S. porcus were found to be important for intraspcific discrimination. The overall classification scores of intraspecific discrimination were determined as 94.6% for S. elongata, 90.5% for S. maderensis, 96.7% for S. notata, 96.5% for S. porcus and 92.2% for S. scrofa. The PCA indicated that 13 morphometric measurements among the 26 traits are important in the interspecific discrimination of five Scorpaena species. The cross-validated canonical discriminant analysis was correctly classified as 97.4% at the Scorpaena species level. The discrimination of correctly classified species ranged from 94.8% to 100%. Finally, we demonstrated that the morphometric characters examined in the present study can be used successfully in the intra- and interspecific discrimination of Scorpaena species from different habitats.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44621679","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 : 2021-09-02DOI: 10.3989/scimar.05023.017
S. Senarat, J. Kettratad, W. Jiraungkoorskul, N. Kangwanrangsan, M. Amano, A. Shimizu, F. Plumley, Sasipong Tipdomrongpong
Rastrelliger brachysoma is a mariculture candidate species, but reproduction in captive fish has been problematic. This report examines the difference in the HPG axis, the neuroendocrine system and the development of reproductive tissues between captive vs. wild male R. brachysoma. The gonadosomatic index (GSI) of sexually mature male wild R. brachysoma was 1.12±0.34 and 1.94±0.26 during the non-breeding and breeding seasons, respectively. Captive R. brachysoma had a GSI of 1.88±0.17. All wild R. brachysoma were in the late spermatogenic stage irrespective of seasons. Immunostaining results showed that sbGnRH-immunoreactive neurons were distributed in three areas of the brain, namely the nucleus periventricularis, nucleus preopticus and nucleus lateralis tuberis. Follicle stimulating hormone and luteinizing hormone immunoreactivities were also observed in the pituitary gland. The levels of brain sbGnRH and GtH mRNA were not significantly different between the non-breeding and breeding seasons, but captive fish displayed (times or percent difference) lower mRNA levels than wild fish. These results suggest that these hormones control the testicular development in R. brachysoma and that the impaired reproduction in captivity may be due to their relative lower expression levels of follicle stimulating hormone and luteinizing hormone genes.
{"title":"Distribution and changes in the sbGnRH system in Rastrelliger brachysoma males during the breeding season","authors":"S. Senarat, J. Kettratad, W. Jiraungkoorskul, N. Kangwanrangsan, M. Amano, A. Shimizu, F. Plumley, Sasipong Tipdomrongpong","doi":"10.3989/scimar.05023.017","DOIUrl":"https://doi.org/10.3989/scimar.05023.017","url":null,"abstract":"Rastrelliger brachysoma is a mariculture candidate species, but reproduction in captive fish has been problematic. This report examines the difference in the HPG axis, the neuroendocrine system and the development of reproductive tissues between captive vs. wild male R. brachysoma. The gonadosomatic index (GSI) of sexually mature male wild R. brachysoma was 1.12±0.34 and 1.94±0.26 during the non-breeding and breeding seasons, respectively. Captive R. brachysoma had a GSI of 1.88±0.17. All wild R. brachysoma were in the late spermatogenic stage irrespective of seasons. Immunostaining results showed that sbGnRH-immunoreactive neurons were distributed in three areas of the brain, namely the nucleus periventricularis, nucleus preopticus and nucleus lateralis tuberis. Follicle stimulating hormone and luteinizing hormone immunoreactivities were also observed in the pituitary gland. The levels of brain sbGnRH and GtH mRNA were not significantly different between the non-breeding and breeding seasons, but captive fish displayed (times or percent difference) lower mRNA levels than wild fish. These results suggest that these hormones control the testicular development in R. brachysoma and that the impaired reproduction in captivity may be due to their relative lower expression levels of follicle stimulating hormone and luteinizing hormone genes.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43975694","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 : 2021-09-02DOI: 10.3989/scimar.05117.019
Vanessa Ochi Agostini, Letícia Terres Rodrigues, A. Macêdo, E. Muxagata
Though a large number of techniques are available for the study of aquatic bacteria, the aim of this study was to establish a technique for analysing free-living and biofilm prokaryotic cells through laboratory assays. In particular, we wished to analyse the efficiency of ultrasound to detach and disrupt biofilm, to obtain an efficient stain treatment for quantifying free-living and biofilm prokaryotes in flow cytometry (FC), and to compare epifluorescence microscopy (EFM), scanning electron microscopy (SEM) and FC for quantifying free-living and biofilm prokaryotes#. Marine-grade plywood substrates were immersed in natural marine water that was conditioned for 12 days. At 6 and 12 days, water aliquots and substrates were removed to estimate free-living and biofilm prokaryote density. Ultrasound efficiently removed marine biofilm from substrates (up to 94%) without cell damage. FC analysis (unstained) reliably quantified marine plankton and young or mature biofilm prokaryotes compared with other staining (acridine orange, 4′,6-diamidino-2-phenylindole, propidium iodide and green fluorescent nucleic acid), EFM or SEM techniques. FC and SEM achieved similar results, while a high variability was observed in the EFM technique. FC was faster and more precise than SEM because the count is not dependent on the observer.
{"title":"Comparison of techniques for counting prokaryotes in marine planktonic and biofilm samples","authors":"Vanessa Ochi Agostini, Letícia Terres Rodrigues, A. Macêdo, E. Muxagata","doi":"10.3989/scimar.05117.019","DOIUrl":"https://doi.org/10.3989/scimar.05117.019","url":null,"abstract":"Though a large number of techniques are available for the study of aquatic bacteria, the aim of this study was to establish a technique for analysing free-living and biofilm prokaryotic cells through laboratory assays. In particular, we wished to analyse the efficiency of ultrasound to detach and disrupt biofilm, to obtain an efficient stain treatment for quantifying free-living and biofilm prokaryotes in flow cytometry (FC), and to compare epifluorescence microscopy (EFM), scanning electron microscopy (SEM) and FC for quantifying free-living and biofilm prokaryotes#. Marine-grade plywood substrates were immersed in natural marine water that was conditioned for 12 days. At 6 and 12 days, water aliquots and substrates were removed to estimate free-living and biofilm prokaryote density. Ultrasound efficiently removed marine biofilm from substrates (up to 94%) without cell damage. FC analysis (unstained) reliably quantified marine plankton and young or mature biofilm prokaryotes compared with other staining (acridine orange, 4′,6-diamidino-2-phenylindole, propidium iodide and green fluorescent nucleic acid), EFM or SEM techniques. FC and SEM achieved similar results, while a high variability was observed in the EFM technique. FC was faster and more precise than SEM because the count is not dependent on the observer.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41862701","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 : 2021-09-02DOI: 10.3989/scimar.05162.015
Sílvia Pérez-Mayol, Itziar Álvarez, Inmmaculada Riera-Batle, A. Grau, B. Morales-Nin
We determined the efficacy of marking the otoliths of three small-sized progenetic gobies to validate their increment periodicity. These small gobies have high mortalities and rearing difficulties, making direct validation difficult. The otoliths were marked by immersing the fish in a bath of alizarin red S. The fishes were euthanatized and the number of increments in their otoliths laid down after the fluorescent mark were counted and compared with the number of elapsed days. The results validated the daily periodicity of Aphia minuta and Pseudaphya ferreri. The high mortality hindered the validation of Crystallogobius linearis.
{"title":"Validating the growth increment periodicity in the otoliths of three small progenetic gobies","authors":"Sílvia Pérez-Mayol, Itziar Álvarez, Inmmaculada Riera-Batle, A. Grau, B. Morales-Nin","doi":"10.3989/scimar.05162.015","DOIUrl":"https://doi.org/10.3989/scimar.05162.015","url":null,"abstract":"We determined the efficacy of marking the otoliths of three small-sized progenetic gobies to validate their increment periodicity. These small gobies have high mortalities and rearing difficulties, making direct validation difficult. The otoliths were marked by immersing the fish in a bath of alizarin red S. The fishes were euthanatized and the number of increments in their otoliths laid down after the fluorescent mark were counted and compared with the number of elapsed days. The results validated the daily periodicity of Aphia minuta and Pseudaphya ferreri. The high mortality hindered the validation of Crystallogobius linearis.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45445310","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 : 2021-09-02DOI: 10.3989/scimar.05096.014
José A. González, S. Correia, S. Jiménez, C. Monteiro, J. Delgado, M. Pinho, J. M. Lorenzo, G. González-Lorenzo
The present study was conceptualized to study the muraenid species (moray eels) occurring around the volcanic archipelagos of the Azores, Madeira, Selvagens, Canary and Cabo Verde islands (eastern-central Atlantic). The biogeographic patterns of these species were analysed and compared. We then hypothesized that this fish family is an ideal group for testing at small-scale the coherency of Macaronesia and its direct biogeographic units: i.e. the Azores, Webbnesia and Cabo Verde, as proposed in recent scientific literature. Additionally, this paper provides for the first time separate fishery statistics for this group in the region that were analysed to contrast the biogeographic results.
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Pub Date : 2021-06-11DOI: 10.3989/SCIMAR.05128.008
M. Drago, L. Cardona, V. Franco‐Trecu, Federico G. Riet‐Sapriza, E. Crespo, N. García, P. Inchausti
1 IRBio and Department of Evolutionary Biology, Ecology and Environmental Science, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain. (MD) (Corresponding author) E-mail: m.drago@ub.edu. ORCID-iD: https://orcid.org/0000-0003-2764-9849 (LC) E-mail: luis.cardona@ub.edu. ORCID-iD: https://orcid.org/0000-0002-7892-1323 2 Departamento de Ecología y Evolución, Centro Universitario Regional Este (CURE), Universidad de la República (UdeLaR), C/ Tacuarembó s/n, 20000 Maldonado, Uruguay. (PI) E-mail: pablo.inchausti.f@gmail.com. ORCID-iD: https://orcid.org/0000-0002-3498-5894 3 Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República (UdeLaR), Iguá 4225, 11400 Montevideo, Uruguay. (VF-T) E-mail: vfranco-trecu@fcien.edu.uy. ORCID-iD: https://orcid.org/0000-0003-1791-010X 4 Laboratorio de Ecología Molecular de Vertebrados Acuáticos (LEMVA), Departamento Ciencias Biológicas, Facultad de Ciencias, Universidad de los Andes, Carrera 1E No 18A 10, Bogotá, Colombia. (FGR-S) E-mail: frietsapriza@gmail.com. ORCID-iD: https://orcid.org/0000-0002-6568-2802 5 Universidad Nacional de la Patagonia San Juan Bosco, Bvd. Brown 3051, 9120, Puerto Madryn, Chubut, Argentina. (EAC) E-mail: kike.crespo@uv.es. ORCID-iD: https://orcid.org/0000-0001-9216-7817 6 Laboratorio de Mamíferos Marinos, Centro Nacional Patagónico (CENPAT-CONICET), Blvd. Brown 29150, 9120 Puerto Madryn, Argentina. (NG) E-mail: garcia@cenpat-conicet.gob.ar. ORCID-iD: https://orcid.org/0000-0002-3178-7534
1 Irbio和AV巴塞罗那大学进化生物学、生态学和环境科学系。西班牙巴塞罗那，对角线64308028。（MD）（对应作者）电子邮件：m.drago@ub.edu.Orcid-ID：https://orcid.org/0000-0003-2764-9849（LC）电子邮件：luis.cardona@ub.edu.Orcid-ID：https://orcid.org/0000-0002-7892-13232乌拉圭马尔多纳多20000号C/Tacuarembo S/N共和国大学东部区域大学中心生态与进化系。（IP）电子邮件：pablo.inchausti.f@gmail.com.Orcid-ID：https://orcid.org/0000-0002-3498-58943乌拉圭蒙得维的亚共和国大学理学院生态与进化系，IGU422511400。（VF-T）电子邮件：vfranco-trecu@fcien.edu.uy.Orcid-ID：https://orcid.org/0000-0003-1791-010X4水生脊椎动物分子生态学实验室，安第斯大学理学院生物科学系，Carrera 1E No 18A 10，波哥大，哥伦比亚。（FGR-S）电子邮件：frietsapriza@gmail.com.Orcid-ID：https://orcid.org/0000-0002-6568-28025巴塔哥尼亚国立大学圣胡安博斯科分校。布朗3051，9120，马德林港，丘布特，阿根廷。（EAC）电子邮件：kike.crespo@uv.es.Orcid-ID：https://orcid.org/0000-0001-9216-78176阿根廷马德林港9120号布朗大道29150号巴塔哥尼亚国家中心海洋哺乳动物实验室。（NG）电子邮件：garcia@cenpat-conicet.gob.ar.Orcid-ID：https://orcid.org/0000-0002-3178-7534
{"title":"Relationship between the female attendance pattern and pup growth rate in the South American sea lion (Carnivora)","authors":"M. Drago, L. Cardona, V. Franco‐Trecu, Federico G. Riet‐Sapriza, E. Crespo, N. García, P. Inchausti","doi":"10.3989/SCIMAR.05128.008","DOIUrl":"https://doi.org/10.3989/SCIMAR.05128.008","url":null,"abstract":"1 IRBio and Department of Evolutionary Biology, Ecology and Environmental Science, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain. (MD) (Corresponding author) E-mail: m.drago@ub.edu. ORCID-iD: https://orcid.org/0000-0003-2764-9849 (LC) E-mail: luis.cardona@ub.edu. ORCID-iD: https://orcid.org/0000-0002-7892-1323 2 Departamento de Ecología y Evolución, Centro Universitario Regional Este (CURE), Universidad de la República (UdeLaR), C/ Tacuarembó s/n, 20000 Maldonado, Uruguay. (PI) E-mail: pablo.inchausti.f@gmail.com. ORCID-iD: https://orcid.org/0000-0002-3498-5894 3 Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República (UdeLaR), Iguá 4225, 11400 Montevideo, Uruguay. (VF-T) E-mail: vfranco-trecu@fcien.edu.uy. ORCID-iD: https://orcid.org/0000-0003-1791-010X 4 Laboratorio de Ecología Molecular de Vertebrados Acuáticos (LEMVA), Departamento Ciencias Biológicas, Facultad de Ciencias, Universidad de los Andes, Carrera 1E No 18A 10, Bogotá, Colombia. (FGR-S) E-mail: frietsapriza@gmail.com. ORCID-iD: https://orcid.org/0000-0002-6568-2802 5 Universidad Nacional de la Patagonia San Juan Bosco, Bvd. Brown 3051, 9120, Puerto Madryn, Chubut, Argentina. (EAC) E-mail: kike.crespo@uv.es. ORCID-iD: https://orcid.org/0000-0001-9216-7817 6 Laboratorio de Mamíferos Marinos, Centro Nacional Patagónico (CENPAT-CONICET), Blvd. Brown 29150, 9120 Puerto Madryn, Argentina. (NG) E-mail: garcia@cenpat-conicet.gob.ar. ORCID-iD: https://orcid.org/0000-0002-3178-7534","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":"85 1","pages":"81-90"},"PeriodicalIF":1.4,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49145270","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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