The ling Molva molva is a widespread gadid in the Northeast Atlantic and one example of a poorly studied species of particular interest, being its distribution affected by climate warming. The ling supposedly occurs in the cold waters of the Northwestern Mediterranean Sea, where it used to be commonly fished, but to our best knowledge, records of M. molva after the 1990s are not availa-ble from the scientific literature. Here we report the recent capture of two individuals, one of them of considerable size, at 35 nautical miles off the coast of Castelló (Spain, NW Mediterranean).
{"title":"Captures of Molva molva (Linnaeus, 1758) still happen in NW Mediterranean waters","authors":"D. Kersting, E. Azzurro","doi":"10.32582/AA.60.1.12","DOIUrl":"https://doi.org/10.32582/AA.60.1.12","url":null,"abstract":"The ling Molva molva is a widespread gadid in the Northeast Atlantic and one example of a poorly studied species of particular interest, being its distribution affected by climate warming. The ling supposedly occurs in the cold waters of the Northwestern Mediterranean Sea, where it used to be commonly fished, but to our best knowledge, records of M. molva after the 1990s are not availa-ble from the scientific literature. Here we report the recent capture of two individuals, one of them of considerable size, at 35 nautical miles off the coast of Castelló (Spain, NW Mediterranean).","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.60.1.12","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42704237","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}
Ilija Ćetković, A. Pešić, A. Joksimovic, J. Tomanić, Stefan Ralević
The blue shark belongs to the group of the most widespread pelagic sharks in the world. It inha-bits the pelagic zone of almost all warm and temperate seas and oceans. As it is one of the most abundant shark species, it is frequently caught in different types of fishing gear operated in the pela-gic zone. This study provides the first data on the reproduction of this species in Montenegrin waters (in the Southeastern Adriatic Sea). Six newborn blue sharks were found during our field excursions. For three of them, detailed morphometric measurements are presented. Alongside the newborns, a gravid female was also recorded. The data was collected in the period from April to October 2017. According to the published literature and the data presented in this paper, species reproduction is likely to be seasonal. A review of the areas where the specimens were recorded was carried out in order to infer if the adult females choose them specifically as their parturition grounds
{"title":"Morphometric measurements of newborn blue shark Prionace glauca (Linnaeus, 1758) and characteristics of its potential parturition areas in coastal waters of Montenegro (Southeastern Adriatic)","authors":"Ilija Ćetković, A. Pešić, A. Joksimovic, J. Tomanić, Stefan Ralević","doi":"10.32582/AA.60.1.6","DOIUrl":"https://doi.org/10.32582/AA.60.1.6","url":null,"abstract":"The blue shark belongs to the group of the most widespread pelagic sharks in the world. It inha-bits the pelagic zone of almost all warm and temperate seas and oceans. As it is one of the most abundant shark species, it is frequently caught in different types of fishing gear operated in the pela-gic zone. This study provides the first data on the reproduction of this species in Montenegrin waters (in the Southeastern Adriatic Sea). Six newborn blue sharks were found during our field excursions. For three of them, detailed morphometric measurements are presented. Alongside the newborns, a gravid female was also recorded. The data was collected in the period from April to October 2017. According to the published literature and the data presented in this paper, species reproduction is likely to be seasonal. A review of the areas where the specimens were recorded was carried out in order to infer if the adult females choose them specifically as their parturition grounds","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.60.1.6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45683340","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}
The first findings of the anomuran Albunea carabus (Linnaeus, 1758) from the southeastern coa-sts of Sicily are documented, improving knowledge on the distribution of this poorly known species around the island and in the Mediterranean Sea. The distribution of records in the whole basin is updated.
{"title":"Additional findings of Albunea carabus (Linnaeus, 1758) (Decapoda, Anomura, Hippoidea) in Italian waters","authors":"B. Zava, G. Insacco, M. Corsini-Foka","doi":"10.32582/AA.60.1.10","DOIUrl":"https://doi.org/10.32582/AA.60.1.10","url":null,"abstract":"The first findings of the anomuran Albunea carabus (Linnaeus, 1758) from the southeastern coa-sts of Sicily are documented, improving knowledge on the distribution of this poorly known species around the island and in the Mediterranean Sea. The distribution of records in the whole basin is updated.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.60.1.10","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47380135","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}
Sampling studies in the Turkish Aegean Sea revealed the occurrence of the sea spider species, Trygaeus communis Dohrn, 1881. The genus Trygaeus and species Trygaeus communis Dohrn, 1881 are recorded for the first time from Turkey. The genus and species are also recorded for the second time from the Eastern Mediterranean Sea. Distribution map of the species in the Eastern Mediterranean Sea is provided, together with photographs and line drawing of the species. This record further extends the known distribution of the species to Turkey in the Eastern Mediterranean.
{"title":"A new record of the genus Trygaeus Dohrn, 1881 and species Trygaeus communis Dohrn, 1881 (Arthropoda, Pycnogonida) from Turkey (Eastern Mediteranean)","authors":"C. Koçak","doi":"10.32582/AA.60.1.4","DOIUrl":"https://doi.org/10.32582/AA.60.1.4","url":null,"abstract":"Sampling studies in the Turkish Aegean Sea revealed the occurrence of the sea spider species, Trygaeus communis Dohrn, 1881. The genus Trygaeus and species Trygaeus communis Dohrn, 1881 are recorded for the first time from Turkey. The genus and species are also recorded for the second time from the Eastern Mediterranean Sea. Distribution map of the species in the Eastern Mediterranean Sea is provided, together with photographs and line drawing of the species. This record further extends the known distribution of the species to Turkey in the Eastern Mediterranean.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.60.1.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49419504","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}
Rym Bachetarzi, C. Rebzani-Zahaf, S. Deudero, M. Vázquez‐Luis, M. Úriz, Sonia Dilmi
The non-indigenous and invasive calcareous sponge Paraleucilla magna Klautau, Monteiro & Borojevic, 2004 has been detected for the first time on the Algerian coast. The species has been recorded at high abundance in Algiers Port (Algiers) and in Pisan Island (Béjaïa) during spring 2018. It was present from 2 m to 20 m of depth at the community of seaweeds with filter feeders established on artificial hard substrates and on rocky boulders. Total of 172 individuals were recorded not exceeding 5 cm in height. Anthropogenic activities such as aquaculture farms or shipping traffic might be important vectors or act as stepping-stones in further expansion of Paraleucilla magna.Additional recording of the species adds to the knowledge of its biogeography distribution, biology and ecology in the Mediterranean and may improve selection of key geographical sites for future monitoring on the species proliferation and expansion.
2004年，在阿尔及利亚海岸首次发现了非本土和入侵性钙质海绵Paraleucilla magna Klautau，Monteiro&Borojevic。2018年春季，该物种在阿尔及尔港（阿尔及尔）和皮桑岛（贝亚）被记录为高丰度物种。它存在于2米至20米深的海藻群落中，滤食性动物建立在人造硬质基质和岩石巨石上。总共记录了172个身高不超过5厘米的个体。水产养殖场或航运等人为活动可能是大型副千层虫进一步扩张的重要媒介或垫脚石。对该物种的额外记录增加了对其在地中海的生物地理分布、生物学和生态学的了解，并可能改善未来监测物种增殖和扩张的关键地理位置的选择。
{"title":"The non-indigenous and invasive species Paraleucilla magnaKlautau, Monteiro & Borojevic, 2004 (Porifera: Calcarea) in the Algerian coast (Southwestern of Mediterranean Sea)","authors":"Rym Bachetarzi, C. Rebzani-Zahaf, S. Deudero, M. Vázquez‐Luis, M. Úriz, Sonia Dilmi","doi":"10.32582/AA.60.1.3","DOIUrl":"https://doi.org/10.32582/AA.60.1.3","url":null,"abstract":"The non-indigenous and invasive calcareous sponge Paraleucilla magna Klautau, Monteiro & Borojevic, 2004 has been detected for the first time on the Algerian coast. The species has been recorded at high abundance in Algiers Port (Algiers) and in Pisan Island (Béjaïa) during spring 2018. It was present from 2 m to 20 m of depth at the community of seaweeds with filter feeders established on artificial hard substrates and on rocky boulders. Total of 172 individuals were recorded not exceeding 5 cm in height. Anthropogenic activities such as aquaculture farms or shipping traffic might be important vectors or act as stepping-stones in further expansion of Paraleucilla magna.Additional recording of the species adds to the knowledge of its biogeography distribution, biology and ecology in the Mediterranean and may improve selection of key geographical sites for future monitoring on the species proliferation and expansion.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.60.1.3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46709290","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}
Length-weight relations (LWRs) and different indices of condition factor for roach from Lake Volvi (Northern Greece) were estimated. Results showed that roach are heavier of a given length in Lake Volvi than in other areas worldwide, with females exhibited higher weight than males of the same length. Significant differences (P<0.05) of LWRs were also exhibited between sexes depending on month. CLARK condition factor peaked at the end of summer displaying no significant difference between sexes, whereas the other three estimated condition factors (Allometric, FULTON, LE CREN) peaked in winter. The estimation of different proxies of condition factor disaggregated by sex might reduce the uncertainty raised by the estimation of fish growth.
对希腊北部Volvi湖地区蟑螂的长权关系(LWRs)和条件因子的不同指标进行了估算。结果表明:在一定长度范围内，沃尔维湖的蜚蠊比世界其他地区的蜚蠊重，相同长度范围内雌蜚蠊比雄蜚蠊重;不同性别、不同月份的lwr也有显著差异(P<0.05)。CLARK条件因子在夏末达到高峰，性别差异不显著，而其他3个条件因子(Allometric, FULTON, LE CREN)在冬季达到高峰。按性别分类的条件因子的不同代用物的估计可以减少鱼类生长估计带来的不确定性。
{"title":"Length-Weight relations and condition factor of roach Rutilus rutilus (Linnaeus, 1758) in Lake Volvi (Northern Greece)","authors":"S. Kyritsi, A. K. Kokkinakis","doi":"10.32582/AA.60.1.5","DOIUrl":"https://doi.org/10.32582/AA.60.1.5","url":null,"abstract":"Length-weight relations (LWRs) and different indices of condition factor for roach from Lake Volvi (Northern Greece) were estimated. Results showed that roach are heavier of a given length in Lake Volvi than in other areas worldwide, with females exhibited higher weight than males of the same length. Significant differences (P<0.05) of LWRs were also exhibited between sexes depending on month. CLARK condition factor peaked at the end of summer displaying no significant difference between sexes, whereas the other three estimated condition factors (Allometric, FULTON, LE CREN) peaked in winter. The estimation of different proxies of condition factor disaggregated by sex might reduce the uncertainty raised by the estimation of fish growth.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.60.1.5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46614537","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}
This review focuses on mercury speciation in the Adriatic Sea, a marginal sea of the Mediterranean, which represents its distinct biogeochemical subunit due to anthropogenic mercury loadings. The current knowledge about mercury cycling in the Adriatic is presented through an overview of the state of the art of research in this area: temporal and spatial distributions and occurrence of mercury species in seawater and sediment, and chemical transformations. We summarised research results of mercury speciation in order to describe its presence and fate in the Adriatic Sea. The Adriatic Sea represents a net source of mercury to the Mediterranean Sea due to the highest total mercury concentrations observed in the North Adriatic Sea and the highest methylmercury concentrations in the South Adriatic Pit. However, the biogeochemical cycle of mercury is not completely known and our understanding of mercury transport between compartments and its (bio)transformations is limited. Future research needs to focus on microbial and chemical processes of mercury transformations to improve our understanding of the impacts of mercury contamination on the environment and human health in the Adriatic Sea.
{"title":"The abundance, distribution and speciation of mercury in waters and sediments of the Adriatic Sea: a review","authors":"I. Živkovič, J. Kotnik, M. Šolić, M. Horvat","doi":"10.32582/aa.58.1.14","DOIUrl":"https://doi.org/10.32582/aa.58.1.14","url":null,"abstract":"This review focuses on mercury speciation in the Adriatic Sea, a marginal sea of the Mediterranean, which represents its distinct biogeochemical subunit due to anthropogenic mercury loadings. The current knowledge about mercury cycling in the Adriatic is presented through an overview of the state of the art of research in this area: temporal and spatial distributions and occurrence of mercury species in seawater and sediment, and chemical transformations. We summarised research results of mercury speciation in order to describe its presence and fate in the Adriatic Sea. The Adriatic Sea represents a net source of mercury to the Mediterranean Sea due to the highest total mercury concentrations observed in the North Adriatic Sea and the highest methylmercury concentrations in the South Adriatic Pit. However, the biogeochemical cycle of mercury is not completely known and our understanding of mercury transport between compartments and its (bio)transformations is limited. Future research needs to focus on microbial and chemical processes of mercury transformations to improve our understanding of the impacts of mercury contamination on the environment and human health in the Adriatic Sea.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":"58 1","pages":"165-186"},"PeriodicalIF":0.9,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/aa.58.1.14","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42297105","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}
Sezgin Tunca, M. Aydın, Muhammet Karapiçak, M. Lindroos
This study investigated biological, social and mainly economic dimensions of recreational fishing (RF) in 8 coastal Middle and Eastern Black Sea provinces of Turkey. In all provinces, a total number of 874 shore-based recreational fishers were interviewed via on-site face-to-face interviews during the fishing activity or at access points being monthly from January to December in 2015. Market value with RF index of added value approaches were used to calculate economic gains and losses from RF. The consistency was observed with the high education levels, high expense and high market value for fishers in the Middle Black Sea provinces; Kastamonu, Samsun, Sinop and Ordu. In all provinces, the harvesting costs stayed far below the average market prices of target species. Also, positive values of RF index were observed in all provinces. The species catch composition in Western and Eastern provinces did not show great differences. Furthermore, even if the habitat type along the Black Sea coast of Turkey did not show great variations, in the Western provinces some certain species including T. trachurus, S. sarda, B. belone, P. saltatrix, M. cephalus were caught in higher amounts. To summarize, RF along the Black Sea coasts of Turkey is an industry creating high economic returns by expenditures, jobs, catch value and further increased indirect economic impact in services sector.
{"title":"Recreational fishing along the Middle and Eastern Black Sea Turkish coasts: Biological, Social and Economic Aspects","authors":"Sezgin Tunca, M. Aydın, Muhammet Karapiçak, M. Lindroos","doi":"10.32582/AA.59.2.4","DOIUrl":"https://doi.org/10.32582/AA.59.2.4","url":null,"abstract":"This study investigated biological, social and mainly economic dimensions of recreational fishing (RF) in 8 coastal Middle and Eastern Black Sea provinces of Turkey. In all provinces, a total number of 874 shore-based recreational fishers were interviewed via on-site face-to-face interviews during the fishing activity or at access points being monthly from January to December in 2015. Market value with RF index of added value approaches were used to calculate economic gains and losses from RF. The consistency was observed with the high education levels, high expense and high market value for fishers in the Middle Black Sea provinces; Kastamonu, Samsun, Sinop and Ordu. In all provinces, the harvesting costs stayed far below the average market prices of target species. Also, positive values of RF index were observed in all provinces. The species catch composition in Western and Eastern provinces did not show great differences. Furthermore, even if the habitat type along the Black Sea coast of Turkey did not show great variations, in the Western provinces some certain species including T. trachurus, S. sarda, B. belone, P. saltatrix, M. cephalus were caught in higher amounts. To summarize, RF along the Black Sea coasts of Turkey is an industry creating high economic returns by expenditures, jobs, catch value and further increased indirect economic impact in services sector.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":"59 1","pages":"191-204"},"PeriodicalIF":0.9,"publicationDate":"2019-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.59.2.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46258273","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}
Mirko Đurović, Aleksandar Joksimović, A. Pešić, Olivera Marković, Slobodan Regner, Milica Mandić, Zdravko Ikica
The annual alteration of gonad morphology in anchovy, Engraulis encrasicolus (Linnaeus,1758), caught in the period from July 2006 to June 2007 using beach seines in the region of Boka Kotorska Bay (Montenegro, southern Adriatic) was studied. Samples were taken each month. Total length of individuals ranged from 6.6 to 12.2 cm, while weight ranged from 1.58 to 11.27 g, Their ovaries were extracted and weighed, and a piece of female gonad tissue was sampled for histological analysis. The length–weight relationship of all anchovy specimens was described by the equation: (W = 0.0032) (L_T^3.2537; (r^2 = 0.9528)). The lowest GSI values were found in November and remained at low levels until April, which corresponded to the gonad rest stage. The GSI increased gradually during April and May, which coincides with the begining of spawning period. Although primary oocytes (stage I) were present during all months, their percentage increased from October and was the highest during the winter months (November-March 100%). Mature cells, stage IV, were present during April – October period, with highest value in May when they comprised 12.3% of total oocyte number. An increase in the percentage of oocytes in the yolk vesicle (II) and yolk (III) stages occurred in April, remaining almost unchanged until October. Smallest average oocyte size was noticed in period November – February with an average of 59.69 μm, while greatest size was recorded in April 2007, 185.84 μm.
本文研究了2006年7月至2007年6月在亚得里亚海南部的黑山博卡科托斯卡湾(Boka Kotorska Bay)地区用海滩围网捕获的鳀鱼Engraulis encrasicolus (Linnaeus,1758)的性腺形态的年变化。每个月采集样本。体长6.6 ～ 12.2 cm，体重1.58 ～ 11.27 g，取卵巢称重，取雌性性腺组织切片作组织学分析。所有凤尾鱼标本的长度-重量关系由公式(W = 0.0032)(L_T^3.2537; (r^2 = 0.9528))描述。GSI值在11月最低，一直保持在低水平，直到4月，这对应于性腺休止期。4、5月GSI逐渐升高，与产卵期开始一致。虽然初级卵母细胞(I期)在所有月份都存在，但它们的百分比从10月开始增加，在冬季月份(11月至100年3月)最高%). Mature cells, stage IV, were present during April – October period, with highest value in May when they comprised 12.3% of total oocyte number. An increase in the percentage of oocytes in the yolk vesicle (II) and yolk (III) stages occurred in April, remaining almost unchanged until October. Smallest average oocyte size was noticed in period November – February with an average of 59.69 μm, while greatest size was recorded in April 2007, 185.84 μm.
{"title":"Razmnožavanje brgljuna, Engraulis encrasicolus (Linnaeus, 1758) u Bokokotorskom zaljevu (Crna Gora, južni Jadran)","authors":"Mirko Đurović, Aleksandar Joksimović, A. Pešić, Olivera Marković, Slobodan Regner, Milica Mandić, Zdravko Ikica","doi":"10.32582/AA.59.2.2","DOIUrl":"https://doi.org/10.32582/AA.59.2.2","url":null,"abstract":"The annual alteration of gonad morphology in anchovy, Engraulis encrasicolus (Linnaeus,1758), caught in the period from July 2006 to June 2007 using beach seines in the region of Boka Kotorska Bay (Montenegro, southern Adriatic) was studied. Samples were taken each month. Total length of individuals ranged from 6.6 to 12.2 cm, while weight ranged from 1.58 to 11.27 g, Their ovaries were extracted and weighed, and a piece of female gonad tissue was sampled for histological analysis. The length–weight relationship of all anchovy specimens was described by the equation: (W = 0.0032) (L_T^3.2537; (r^2 = 0.9528)). The lowest GSI values were found in November and remained at low levels until April, which corresponded to the gonad rest stage. The GSI increased gradually during April and May, which coincides with the begining of spawning period. Although primary oocytes (stage I) were present during all months, their percentage increased from October and was the highest during the winter months (November-March 100%). Mature cells, stage IV, were present during April – October period, with highest value in May when they comprised 12.3% of total oocyte number. An increase in the percentage of oocytes in the yolk vesicle (II) and yolk (III) stages occurred in April, remaining almost unchanged until October. Smallest average oocyte size was noticed in period November – February with an average of 59.69 μm, while greatest size was recorded in April 2007, 185.84 μm.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2019-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.59.2.2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44593431","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}
G. Bellissimo, Francesca Galfo, A. Nicastro, R. Costantini, L. Castriota
The authors report for the first time on the invasive green alga Codium fragile ssp. fragile (Suringar) Hariot from the Adriatic coast of the Abruzzi Region of Italy (central Adriatic Sea). Several thalli have been found stranded on the beach of Silvi Marina since November 2015. This species, native to East Asia, has widely invaded several locations of the Mediterranean where it has been probably introduced through boating or shellfish aquaculture.
{"title":"First record of the invasive green alga Codium fragile ssp. fragile (Chlorophyta, Bryopsidales) in Abruzzi waters, central Adriatic Sea","authors":"G. Bellissimo, Francesca Galfo, A. Nicastro, R. Costantini, L. Castriota","doi":"10.32582/AA.59.2.5","DOIUrl":"https://doi.org/10.32582/AA.59.2.5","url":null,"abstract":"The authors report for the first time on the invasive green alga Codium fragile ssp. fragile (Suringar) Hariot from the Adriatic coast of the Abruzzi Region of Italy (central Adriatic Sea). Several thalli have been found stranded on the beach of Silvi Marina since November 2015. This species, native to East Asia, has widely invaded several locations of the Mediterranean where it has been probably introduced through boating or shellfish aquaculture.","PeriodicalId":35248,"journal":{"name":"Acta Adriatica","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2018-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.32582/AA.59.2.5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49585295","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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