Pub Date : 2023-01-01DOI: 10.4236/ojms.2023.132003
Arun Malarvizhi, P. M. Mohan
{"title":"Nesting Biology and Site Selection of Olive Ridley—A Coherence of Nature","authors":"Arun Malarvizhi, P. M. Mohan","doi":"10.4236/ojms.2023.132003","DOIUrl":"https://doi.org/10.4236/ojms.2023.132003","url":null,"abstract":"","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.4236/ojms.2023.131002
Arun Malarvizhi, M. M. Ilaamurughu, P. M. Mohan
{"title":"The Probable Cause for Nesting Pattern of Olive Ridley (<i>Lepidochelys olivacea</i>) at Ramnagar Beach, North East Coast of Andaman Island, India","authors":"Arun Malarvizhi, M. M. Ilaamurughu, P. M. Mohan","doi":"10.4236/ojms.2023.131002","DOIUrl":"https://doi.org/10.4236/ojms.2023.131002","url":null,"abstract":"","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.4236/ojms.2023.133004
Tcham Leopold, Vanlier Kontchou, Nyatchouba Nsangue Bruno Thierry, A. Njifenjou, Njomoue Pandong Achille
{"title":"Hydrodynamic Performance of a Newly-Designed Pelagic and Demersal Trawls Using Physical Modeling and Analytical Methods for Cameroonian Industrial Fisheries","authors":"Tcham Leopold, Vanlier Kontchou, Nyatchouba Nsangue Bruno Thierry, A. Njifenjou, Njomoue Pandong Achille","doi":"10.4236/ojms.2023.133004","DOIUrl":"https://doi.org/10.4236/ojms.2023.133004","url":null,"abstract":"","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hexagrammos otakii is an important kind of economic fish species in East Asia. However, wild H. otakii resources have declined sharply in recent years as a result of human disturbance and habitat destruction. Thus, it is crucial to protect the current resources of H. otakii. In this study, 35 novel single nucleotide polymorphism (SNP) markers were developed based on restriction-site associated DNA sequencing. The results showed that the observed heterozygosity and expected heterozygosity ranged from 0.1875 to 0.6562 and 0.2679 to 0.5079, respectively. The minor allele frequency raged from 0.1875 to 0.4375. Polymorphic information content ranged from 0.229 to 0.375. Six SNPs were found to be deviated significantly from the HWE (P < 0.05). These SNP markers will serve as a useful tool for genetic studies and population evaluation aimed at the conservation of H. otakii.
{"title":"Development and Characterization of 35 SNP Markers in the Fat Greenling Hexagrammos Otakii","authors":"Xianggang Gao, Weidong Liu, Zhongying Liu, Wei Sun, Yulong Li, Yun-feng Li, X. Bao","doi":"10.21203/rs.3.rs-823192/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-823192/v1","url":null,"abstract":"\u0000 Hexagrammos otakii is an important kind of economic fish species in East Asia. However, wild H. otakii resources have declined sharply in recent years as a result of human disturbance and habitat destruction. Thus, it is crucial to protect the current resources of H. otakii. In this study, 35 novel single nucleotide polymorphism (SNP) markers were developed based on restriction-site associated DNA sequencing. The results showed that the observed heterozygosity and expected heterozygosity ranged from 0.1875 to 0.6562 and 0.2679 to 0.5079, respectively. The minor allele frequency raged from 0.1875 to 0.4375. Polymorphic information content ranged from 0.229 to 0.375. Six SNPs were found to be deviated significantly from the HWE (P < 0.05). These SNP markers will serve as a useful tool for genetic studies and population evaluation aimed at the conservation of H. otakii.","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41804675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojms.2022.122004
Jesús Eduardo Contreras Romero, E. B. González, Juan Manuel López Viva, J. Quintana, Javier Aguilar Parra, Elvia Esthela Aispuro Felix, Bruma R. Castillo-Rosas
The coastal areas of the Baja California peninsula are characterized mainly by rocky areas, where rock pools dominate as important coastal habitats because of the tide cycle, when the water is trapped during the low tide, forming the pools. Environmental parameters like temperature, salinity and dissolved oxygen of the water trapped in the pools are key factors for the flora and fauna that inhabit these areas, particularly during the warmer months when the mean values of these parameters are usually higher than the mean values of the sea surface. The aim of the present study was to determine the variation of the taxonomic diversity of the fish communities that inhabit the rock pools in the common land known as Conquista Agraria in the Pacific coast of Baja California Sur, México, from 2015 to 2019. A total of 59 visual censuses were carried out monthly during the second low tide of the full moon. Temperature, salinity, and dissolved oxygen showed variation throughout the study period, with two distinct seasons (warm
{"title":"Determination of the Taxonomic Diversity of the Intertidal Fish Communities on the Pacific Coast of Baja California Sur, México from 2015-2019","authors":"Jesús Eduardo Contreras Romero, E. B. González, Juan Manuel López Viva, J. Quintana, Javier Aguilar Parra, Elvia Esthela Aispuro Felix, Bruma R. Castillo-Rosas","doi":"10.4236/ojms.2022.122004","DOIUrl":"https://doi.org/10.4236/ojms.2022.122004","url":null,"abstract":"The coastal areas of the Baja California peninsula are characterized mainly by rocky areas, where rock pools dominate as important coastal habitats because of the tide cycle, when the water is trapped during the low tide, forming the pools. Environmental parameters like temperature, salinity and dissolved oxygen of the water trapped in the pools are key factors for the flora and fauna that inhabit these areas, particularly during the warmer months when the mean values of these parameters are usually higher than the mean values of the sea surface. The aim of the present study was to determine the variation of the taxonomic diversity of the fish communities that inhabit the rock pools in the common land known as Conquista Agraria in the Pacific coast of Baja California Sur, México, from 2015 to 2019. A total of 59 visual censuses were carried out monthly during the second low tide of the full moon. Temperature, salinity, and dissolved oxygen showed variation throughout the study period, with two distinct seasons (warm","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70367010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojms.2022.123006
Ebtesam A. Yousef
The benthic ostracods of Red Sea of Egypt have received little attention in ecological studies. Temperature, depth, salinity, dissolved oxygen, pH, conductivity, and other environmental variables all have an impact on benthic ostracods. This study aimed to determine the influence of environmental parameters on the distribution of benthic ostracods by determining the similarity and dissimilarity between the eight collection sites, investigating the regional distribution form by accomplished Multidimensional Scaling (MDS), and recognizing the percentage of the influence of each species on the resemblances and variances within the clusters formed by SIMPER analysis, determining the relationships between depth and other factors by Spearman’s rank correlation coefficient. A total of 43 ostracod species had been identified. According to the frequency index, a single species was rare, six were common and the remaining species (36) were dominant. Seven ostracods species were found across all sites and Cytherelloidea sp. was found in two. The abundance and richness of ostracod species were correlated positively with water temperature, dissolved oxygen, organic matter, salinity, and calcium carbonate. The cold water is preferred by the ostracods Cylindroleberis vix and Prionotoleberis lux and the warm water is favored by podocopid ostracods. The findings of this study will aid in the identification of ostracod species, as well as understanding the characteristics and ecological variables in this zone of the Red Sea in Egypt. The current investigation is an attempt to shed the light on the features of ostracods that live on the east side of Safaga Island.
{"title":"The Impact of Some Environmental Factors on the Distribution of the Benthic Ostracod Species from of Safaga Island, Red Sea, Egypt","authors":"Ebtesam A. Yousef","doi":"10.4236/ojms.2022.123006","DOIUrl":"https://doi.org/10.4236/ojms.2022.123006","url":null,"abstract":"The benthic ostracods of Red Sea of Egypt have received little attention in ecological studies. Temperature, depth, salinity, dissolved oxygen, pH, conductivity, and other environmental variables all have an impact on benthic ostracods. This study aimed to determine the influence of environmental parameters on the distribution of benthic ostracods by determining the similarity and dissimilarity between the eight collection sites, investigating the regional distribution form by accomplished Multidimensional Scaling (MDS), and recognizing the percentage of the influence of each species on the resemblances and variances within the clusters formed by SIMPER analysis, determining the relationships between depth and other factors by Spearman’s rank correlation coefficient. A total of 43 ostracod species had been identified. According to the frequency index, a single species was rare, six were common and the remaining species (36) were dominant. Seven ostracods species were found across all sites and Cytherelloidea sp. was found in two. The abundance and richness of ostracod species were correlated positively with water temperature, dissolved oxygen, organic matter, salinity, and calcium carbonate. The cold water is preferred by the ostracods Cylindroleberis vix and Prionotoleberis lux and the warm water is favored by podocopid ostracods. The findings of this study will aid in the identification of ostracod species, as well as understanding the characteristics and ecological variables in this zone of the Red Sea in Egypt. The current investigation is an attempt to shed the light on the features of ostracods that live on the east side of Safaga Island.","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70367605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojms.2022.124011
A. Mama, Willy Karol Bodo Abouga, F. Besack, Firmin Landry Tadoum Bah, Stéphane Onla, J.C.R.S. Mongue, Frédéric Nkolo Mfoula, Fabius Kouegan, Durand Bernadin Djombe Kammen, Dorine Mara Ngo Nola, Ginette Thérèse Atoukoh Dingong, Laeticia Ingrig Ntangyong, Gervais Mani, Rose Eulalie Bekono Beyala, Josué Junior Manga Tchogom, Elcy Rhode Guiadem, L. M. Oben
{"title":"Effect of Tide on Temporal and Spatial Distribution of Some Physical and Chemicals Parameters in the Shallow Estuary of the Kienke River (Kribi Deep Sea Port Area, South Cameroon Coast)","authors":"A. Mama, Willy Karol Bodo Abouga, F. Besack, Firmin Landry Tadoum Bah, Stéphane Onla, J.C.R.S. Mongue, Frédéric Nkolo Mfoula, Fabius Kouegan, Durand Bernadin Djombe Kammen, Dorine Mara Ngo Nola, Ginette Thérèse Atoukoh Dingong, Laeticia Ingrig Ntangyong, Gervais Mani, Rose Eulalie Bekono Beyala, Josué Junior Manga Tchogom, Elcy Rhode Guiadem, L. M. Oben","doi":"10.4236/ojms.2022.124011","DOIUrl":"https://doi.org/10.4236/ojms.2022.124011","url":null,"abstract":"","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojms.2022.124008
S. Zongo, Franck-Estime Ngohang, B. D. K. Mabert, Estelle Ndombi Nzaba, Frederic Arnold Djounga, J. Ondo, T. Stieglitz
{"title":"The Marine Benthic Algae Diversity of Gabon: Case of the Rocky Foreshore of Cap Estérias","authors":"S. Zongo, Franck-Estime Ngohang, B. D. K. Mabert, Estelle Ndombi Nzaba, Frederic Arnold Djounga, J. Ondo, T. Stieglitz","doi":"10.4236/ojms.2022.124008","DOIUrl":"https://doi.org/10.4236/ojms.2022.124008","url":null,"abstract":"","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojms.2022.121002
K. Sabith, V. Shivashankar, G. Narshimulu, P. M. Mohan
Fire-worms from the family Amphinomidae Lamark, 1818, act as a predator, scavenger and sedimentivores, in nearshore waters. This family has 146 valid species among them 18 numbers reported from Indian marine environment and 11 reported from the Andaman waters. Among this family, genus Choleia Lamark. 1818, reported 4 species and 1 subspecies from the Andaman waters. Among these the species Chloeia flava pulchella Baird, 1868 was reported by Tampi and Rangarajan, 1964, but no detailed species description was found for this species. During the studies on continuous monitoring of the environmental parameter of nearshore waters of off South Andaman region, a specimen of Chloeia flava pulchella Baird, 1868, was collected. Later the cursory analysis for this specimen identification was revealed that the detailed description of this species found in this region was not available in the literature. So, the detailed taxonomic description was developed and presented in this article.
{"title":"Occurrence of Chloeia flava pulchella Baird, 1868, from Off Junglighat, South Andaman, India","authors":"K. Sabith, V. Shivashankar, G. Narshimulu, P. M. Mohan","doi":"10.4236/ojms.2022.121002","DOIUrl":"https://doi.org/10.4236/ojms.2022.121002","url":null,"abstract":"Fire-worms from the family Amphinomidae Lamark, 1818, act as a predator, scavenger and sedimentivores, in nearshore waters. This family has 146 valid species among them 18 numbers reported from Indian marine environment and 11 reported from the Andaman waters. Among this family, genus Choleia Lamark. 1818, reported 4 species and 1 subspecies from the Andaman waters. Among these the species Chloeia flava pulchella Baird, 1868 was reported by Tampi and Rangarajan, 1964, but no detailed species description was found for this species. During the studies on continuous monitoring of the environmental parameter of nearshore waters of off South Andaman region, a specimen of Chloeia flava pulchella Baird, 1868, was collected. Later the cursory analysis for this specimen identification was revealed that the detailed description of this species found in this region was not available in the literature. So, the detailed taxonomic description was developed and presented in this article.","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70367182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojms.2022.121001
Laura E. Cota-Ortega, E. Barjau-González, J. López-Vivas, J. A. Armenta-Quintana, Javier Aguilar-Parra, Elvia Esthela Aispuro-Felix, Abril Karim Romo Piñera
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