L. F. Del Moral-Flores, A. Wakida-Kusunoki, Rafael Ramos-Hernández, Arturo George-Zamora
We report herewith the presence of two species of rare snake eels, Aplatophis chauliodus Böhlke, 1956 (499 mm in total length [TL]) and Ophichthus hyposagmatus McCosker et Böhlke, 1984 (486 mm TL), in Mexican waters of the Gulf of Mexico. Both species were caught using bottom longline at a depth of 50 to 100 m in sandy bottoms in Veracruz, Mexico. Both records are the first for Mexico and the westernmost in the Gulf of Mexico.
{"title":"First records of two species of snake eels, Aplatophis chauliodus and Ophichthus hyposagmatus (Actinopterygii: Anguilliformes: Ophichthidae), from Mexico","authors":"L. F. Del Moral-Flores, A. Wakida-Kusunoki, Rafael Ramos-Hernández, Arturo George-Zamora","doi":"10.3897/aiep.54.119085","DOIUrl":"https://doi.org/10.3897/aiep.54.119085","url":null,"abstract":"We report herewith the presence of two species of rare snake eels, Aplatophis chauliodus Böhlke, 1956 (499 mm in total length [TL]) and Ophichthus hyposagmatus McCosker et Böhlke, 1984 (486 mm TL), in Mexican waters of the Gulf of Mexico. Both species were caught using bottom longline at a depth of 50 to 100 m in sandy bottoms in Veracruz, Mexico. Both records are the first for Mexico and the westernmost in the Gulf of Mexico.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"24 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141119297","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}
E. Damadi, Faezeh Yazdani Moghaddam, M. Ghanbarifardi
Species of the genus Lethrinus, commonly referred to as emperor fishes, mainly distributed in the Indo–West Pacific, including the Persian Gulf and Gulf of Oman are poorly known. It is difficult to characterize them morphologically, as there are no distinguishing meristic features for the majority of species. We studied the morphological features of 65 specimens representing the genus Lethrinus to define and identify the species involved. Among the morphological characters commonly considered in this type of study, we also included new, previously undescribed characters. The results of Tukey’s post hoc HSD test for metric and meristic variables, which showed significant differences between species in ANOVA, indicate that most metric traits and the number of scale rows above the lateral line differ significantly among the five morphotypes distinguished. Principal component analysis (PCA) and discriminant function analysis (DFA) effectively showed the morphometric variation between these morphotypes. The characteristics of body depth, head length, pectoral fin length, and caudal fin length are the most distinguishing diagnostic at the species level. We determined that the collected fish specimens represented: Lethrinus borbonicus Valenciennes, 1830, Lethrinus crocineus Smith, 1959, Lethrinus lentjan (Lacepède, 1802), Lethrinus microdon Valenciennes, 1830, and Lethrinus nebulosus (Forsskål, 1775). We also confirmed their validity as distinct species. Notably, L. crocineus, previously known only from the western Indian Ocean (Africa and Socotra), is now reported for the first time from the Persian Gulf and the Gulf of Oman. Lastly, a distribution map for the Lethrinus species is included.
{"title":"Taxonomic characterization of five species of emperor fishes (Actinopterygii: Eupercaria: Lethrinidae) based on external morphology, morphometry, and geographic distribution in the northwestern Indian Ocean","authors":"E. Damadi, Faezeh Yazdani Moghaddam, M. Ghanbarifardi","doi":"10.3897/aiep.54.118586","DOIUrl":"https://doi.org/10.3897/aiep.54.118586","url":null,"abstract":"Species of the genus Lethrinus, commonly referred to as emperor fishes, mainly distributed in the Indo–West Pacific, including the Persian Gulf and Gulf of Oman are poorly known. It is difficult to characterize them morphologically, as there are no distinguishing meristic features for the majority of species. We studied the morphological features of 65 specimens representing the genus Lethrinus to define and identify the species involved. Among the morphological characters commonly considered in this type of study, we also included new, previously undescribed characters. The results of Tukey’s post hoc HSD test for metric and meristic variables, which showed significant differences between species in ANOVA, indicate that most metric traits and the number of scale rows above the lateral line differ significantly among the five morphotypes distinguished. Principal component analysis (PCA) and discriminant function analysis (DFA) effectively showed the morphometric variation between these morphotypes. The characteristics of body depth, head length, pectoral fin length, and caudal fin length are the most distinguishing diagnostic at the species level. We determined that the collected fish specimens represented: Lethrinus borbonicus Valenciennes, 1830, Lethrinus crocineus Smith, 1959, Lethrinus lentjan (Lacepède, 1802), Lethrinus microdon Valenciennes, 1830, and Lethrinus nebulosus (Forsskål, 1775). We also confirmed their validity as distinct species. Notably, L. crocineus, previously known only from the western Indian Ocean (Africa and Socotra), is now reported for the first time from the Persian Gulf and the Gulf of Oman. Lastly, a distribution map for the Lethrinus species is included.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"68 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141121436","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}
M. Soria-Barreto, D. Hinojosa-Garro, J. E. García-López, Ricardo Efraín Góngora Chin
Commonly known as suckermouth armored catfishes or pleco, Pterygoplichthys spp. are a group of invasive fishes that are widely distributed in several countries, including Mexico. This paper reports the first records of suckermouth armored catfishes in the Candelaria River, thereby expanding its distribution within the Yucatan Peninsula. Fifteen individuals were collected from three sites in the upper and middle parts of the basin. They represented two phenotypically distinct species of catfishes: (vermiculate) Pterygoplichthys disjunctivus (Weber, 1991) and (spotted) Pterygoplichthys pardalis (Castelnau, 1855). Adults and juveniles were caught in lotic ecosystems in 2023 during the dry and rainy seasons. Results suggest that the invasive process of the Candelaria River is linked to the San Pedro River upper basin, in El Petén, Guatemala, through floodings enhanced by hurricanes, allowing these species to disperse. These records highlight the importance of connectivity between adjacent watersheds for the dispersal and expansion of these invasive fishes, mainly from rivers neighboring Guatemala. However, further research is necessary to explore the dynamics and connectivity between aquatic ecosystems and the possible mechanisms that promote the invasion of these fishes in this region.
{"title":"New report and range extension of invasive suckermouth armored catfishes of the genus Pterygoplichthys (Actinopterygii: Siluriformes: Loricariidae) in the Yucatan Peninsula","authors":"M. Soria-Barreto, D. Hinojosa-Garro, J. E. García-López, Ricardo Efraín Góngora Chin","doi":"10.3897/aiep.54.117474","DOIUrl":"https://doi.org/10.3897/aiep.54.117474","url":null,"abstract":"Commonly known as suckermouth armored catfishes or pleco, Pterygoplichthys spp. are a group of invasive fishes that are widely distributed in several countries, including Mexico. This paper reports the first records of suckermouth armored catfishes in the Candelaria River, thereby expanding its distribution within the Yucatan Peninsula. Fifteen individuals were collected from three sites in the upper and middle parts of the basin. They represented two phenotypically distinct species of catfishes: (vermiculate) Pterygoplichthys disjunctivus (Weber, 1991) and (spotted) Pterygoplichthys pardalis (Castelnau, 1855). Adults and juveniles were caught in lotic ecosystems in 2023 during the dry and rainy seasons. Results suggest that the invasive process of the Candelaria River is linked to the San Pedro River upper basin, in El Petén, Guatemala, through floodings enhanced by hurricanes, allowing these species to disperse. These records highlight the importance of connectivity between adjacent watersheds for the dispersal and expansion of these invasive fishes, mainly from rivers neighboring Guatemala. However, further research is necessary to explore the dynamics and connectivity between aquatic ecosystems and the possible mechanisms that promote the invasion of these fishes in this region.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"28 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141120609","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}
This study focuses on the Yeosu Coast, a critical ecological and economic zone on the Korean Peninsula. We conducted a comprehensive analysis of fish data obtained from daily set nets for the period of 2008–2022 (excluding 2017) to investigate variations in fish composition and community structure over a 15-year period. The catches were characterized by a prevalence of warm-water fish species, reflecting the temperate and subtropical character of the Yeosu Coast. The total catch during the study period was 3210.8 tonnes, with 2010 and 2016 registering the highest and lowest catches, respectively. Our analysis identified sea surface temperature as a primary factor correlated with these changes in species composition. The two dominant species, Scomberomorus niphonius (Cuvier, 1832) and Engraulis japonicus Temminck et Schlegel, 1846 together accounted for a remarkable 78.9% of the total catch. Notably, the Shannon–Weaver diversity index values were lower in 2015 than in 2008, indicating potential shifts in the community structure. Our analysis identified sea surface temperature as the most dominant factor that influenced these changes in species composition. Furthermore, we highlight the significant threats posed by climate change and the increasing number of jellyfish challenging fisheries on the Yeosu Coast. These threats have the potential to result in diminished set-net catches and declining biodiversity within this valuable ecosystem. Our findings underscore the importance of monitoring and addressing these ecological shifts to ensure the long-term sustainability of Yeosu Coast fisheries.
{"title":"Dynamics of fish community structure in the Yeosu Coast, Korea: A comprehensive analysis of daily set-net catch data during 2008–2022","authors":"Seong Yong Moon, Mi Hee Lee, Kyung-Mi Jung, Myung Sung Koo","doi":"10.3897/aiep.54.112388","DOIUrl":"https://doi.org/10.3897/aiep.54.112388","url":null,"abstract":"This study focuses on the Yeosu Coast, a critical ecological and economic zone on the Korean Peninsula. We conducted a comprehensive analysis of fish data obtained from daily set nets for the period of 2008–2022 (excluding 2017) to investigate variations in fish composition and community structure over a 15-year period. The catches were characterized by a prevalence of warm-water fish species, reflecting the temperate and subtropical character of the Yeosu Coast. The total catch during the study period was 3210.8 tonnes, with 2010 and 2016 registering the highest and lowest catches, respectively. Our analysis identified sea surface temperature as a primary factor correlated with these changes in species composition. The two dominant species, Scomberomorus niphonius (Cuvier, 1832) and Engraulis japonicus Temminck et Schlegel, 1846 together accounted for a remarkable 78.9% of the total catch. Notably, the Shannon–Weaver diversity index values were lower in 2015 than in 2008, indicating potential shifts in the community structure. Our analysis identified sea surface temperature as the most dominant factor that influenced these changes in species composition. Furthermore, we highlight the significant threats posed by climate change and the increasing number of jellyfish challenging fisheries on the Yeosu Coast. These threats have the potential to result in diminished set-net catches and declining biodiversity within this valuable ecosystem. Our findings underscore the importance of monitoring and addressing these ecological shifts to ensure the long-term sustainability of Yeosu Coast fisheries.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239914","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}
Jan Turek, Pavel Lepič, A. Bořík, Petra Galicová, Petra Nováková, Mladen Avramović, Tomáš Randák
Fry of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792), was subjected to one-hour and four hours immersion in Alizarin red S (ARS) bath 150 mg · L–1. The experiment involved seven age groups (40, 50, 60, 70, 80, 90, and 100 days) and was conducted to estimate the minimal age of salmonids for mass marking with ARS bath enabling subsequent effective, simple field nonlethal identification, based on fin rays checking. The fish were examined at the ages of 200 and 300 days. The results showed a high retention level of ARS traces in caudal fin rays ensured satisfactory visibility and quick detection. A success rate of marking detection was >90% at 200 and 300 days of age and the fish were immersed in ARS solution from 60 days of age (685°D). This treatment provided better results in fish bathed for four hours. Recognition of marks using a laser pointer and protective glasses was successful even in fish, with a 3.5–5.0 times length increase compared to the marking time. The results indicate a high potential for ARS marking and its field identification for juvenile salmonids, which can significantly expand the possibilities of field experiments.
{"title":"Evaluation of large-scale marking with alizarin red S in different age rainbow trout fry for nonlethal field identification","authors":"Jan Turek, Pavel Lepič, A. Bořík, Petra Galicová, Petra Nováková, Mladen Avramović, Tomáš Randák","doi":"10.3897/aiep.54.117547","DOIUrl":"https://doi.org/10.3897/aiep.54.117547","url":null,"abstract":"Fry of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792), was subjected to one-hour and four hours immersion in Alizarin red S (ARS) bath 150 mg · L–1. The experiment involved seven age groups (40, 50, 60, 70, 80, 90, and 100 days) and was conducted to estimate the minimal age of salmonids for mass marking with ARS bath enabling subsequent effective, simple field nonlethal identification, based on fin rays checking. The fish were examined at the ages of 200 and 300 days. The results showed a high retention level of ARS traces in caudal fin rays ensured satisfactory visibility and quick detection. A success rate of marking detection was >90% at 200 and 300 days of age and the fish were immersed in ARS solution from 60 days of age (685°D). This treatment provided better results in fish bathed for four hours. Recognition of marks using a laser pointer and protective glasses was successful even in fish, with a 3.5–5.0 times length increase compared to the marking time. The results indicate a high potential for ARS marking and its field identification for juvenile salmonids, which can significantly expand the possibilities of field experiments.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"123 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139780838","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}
Jan Turek, Pavel Lepič, A. Bořík, Petra Galicová, Petra Nováková, Mladen Avramović, Tomáš Randák
Fry of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792), was subjected to one-hour and four hours immersion in Alizarin red S (ARS) bath 150 mg · L–1. The experiment involved seven age groups (40, 50, 60, 70, 80, 90, and 100 days) and was conducted to estimate the minimal age of salmonids for mass marking with ARS bath enabling subsequent effective, simple field nonlethal identification, based on fin rays checking. The fish were examined at the ages of 200 and 300 days. The results showed a high retention level of ARS traces in caudal fin rays ensured satisfactory visibility and quick detection. A success rate of marking detection was >90% at 200 and 300 days of age and the fish were immersed in ARS solution from 60 days of age (685°D). This treatment provided better results in fish bathed for four hours. Recognition of marks using a laser pointer and protective glasses was successful even in fish, with a 3.5–5.0 times length increase compared to the marking time. The results indicate a high potential for ARS marking and its field identification for juvenile salmonids, which can significantly expand the possibilities of field experiments.
{"title":"Evaluation of large-scale marking with alizarin red S in different age rainbow trout fry for nonlethal field identification","authors":"Jan Turek, Pavel Lepič, A. Bořík, Petra Galicová, Petra Nováková, Mladen Avramović, Tomáš Randák","doi":"10.3897/aiep.54.117547","DOIUrl":"https://doi.org/10.3897/aiep.54.117547","url":null,"abstract":"Fry of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792), was subjected to one-hour and four hours immersion in Alizarin red S (ARS) bath 150 mg · L–1. The experiment involved seven age groups (40, 50, 60, 70, 80, 90, and 100 days) and was conducted to estimate the minimal age of salmonids for mass marking with ARS bath enabling subsequent effective, simple field nonlethal identification, based on fin rays checking. The fish were examined at the ages of 200 and 300 days. The results showed a high retention level of ARS traces in caudal fin rays ensured satisfactory visibility and quick detection. A success rate of marking detection was >90% at 200 and 300 days of age and the fish were immersed in ARS solution from 60 days of age (685°D). This treatment provided better results in fish bathed for four hours. Recognition of marks using a laser pointer and protective glasses was successful even in fish, with a 3.5–5.0 times length increase compared to the marking time. The results indicate a high potential for ARS marking and its field identification for juvenile salmonids, which can significantly expand the possibilities of field experiments.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"91 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139840864","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}
Gino V. Limmon, K. Wibowo, T. Peristiwady, R. V. Kusumah, Muhammad Afrisal
Two specimens (290.2 and 309.5 mm in standard length) of the longnosed stargazer, Ichthyscopus lebeck (Bloch et Schneider, 1801), were recently collected from Jakarta Bay, Jakarta, Indonesia. Described more than two centuries ago, I. lebeck has hitherto been documented exclusively from the Northern Hemisphere, encompassing the Arabian Sea, southern coastal India, the Bay of Bengal, the Andaman Sea, and Singapore. The present paper documents the first record of the species in the Southern Hemisphere. Detailed descriptions of these specimens are provided, contributing valuable insights into the characteristics of I. lebeck in the newly reported locality.
最近在印度尼西亚雅加达的雅加达湾采集到两件长鼻杓鹬标本（标准长度分别为 290.2 毫米和 309.5 毫米）。两个多世纪前，I. lebeck 就被描述过，但迄今为止只有北半球的记录，包括阿拉伯海、印度南部沿海、孟加拉湾、安达曼海和新加坡。本文是该物种在南半球的首次记录。本文提供了这些标本的详细描述，为了解 I. lebeck 在新报道地点的特征提供了宝贵的见解。
{"title":"First Southern Hemisphere record of the longnosed stargazer, Ichthyscopus lebeck (Actinopterygii: Perciformes: Uranoscopidae)","authors":"Gino V. Limmon, K. Wibowo, T. Peristiwady, R. V. Kusumah, Muhammad Afrisal","doi":"10.3897/aiep.54.113513","DOIUrl":"https://doi.org/10.3897/aiep.54.113513","url":null,"abstract":"Two specimens (290.2 and 309.5 mm in standard length) of the longnosed stargazer, Ichthyscopus lebeck (Bloch et Schneider, 1801), were recently collected from Jakarta Bay, Jakarta, Indonesia. Described more than two centuries ago, I. lebeck has hitherto been documented exclusively from the Northern Hemisphere, encompassing the Arabian Sea, southern coastal India, the Bay of Bengal, the Andaman Sea, and Singapore. The present paper documents the first record of the species in the Southern Hemisphere. Detailed descriptions of these specimens are provided, contributing valuable insights into the characteristics of I. lebeck in the newly reported locality.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139863882","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}
Gino V. Limmon, K. Wibowo, T. Peristiwady, R. V. Kusumah, Muhammad Afrisal
Two specimens (290.2 and 309.5 mm in standard length) of the longnosed stargazer, Ichthyscopus lebeck (Bloch et Schneider, 1801), were recently collected from Jakarta Bay, Jakarta, Indonesia. Described more than two centuries ago, I. lebeck has hitherto been documented exclusively from the Northern Hemisphere, encompassing the Arabian Sea, southern coastal India, the Bay of Bengal, the Andaman Sea, and Singapore. The present paper documents the first record of the species in the Southern Hemisphere. Detailed descriptions of these specimens are provided, contributing valuable insights into the characteristics of I. lebeck in the newly reported locality.
最近在印度尼西亚雅加达的雅加达湾采集到两件长鼻杓鹬标本（标准长度分别为 290.2 毫米和 309.5 毫米）。两个多世纪前，I. lebeck 就被描述过，但迄今为止只有北半球的记录，包括阿拉伯海、印度南部沿海、孟加拉湾、安达曼海和新加坡。本文是该物种在南半球的首次记录。本文提供了这些标本的详细描述，为了解 I. lebeck 在新报道地点的特征提供了宝贵的见解。
{"title":"First Southern Hemisphere record of the longnosed stargazer, Ichthyscopus lebeck (Actinopterygii: Perciformes: Uranoscopidae)","authors":"Gino V. Limmon, K. Wibowo, T. Peristiwady, R. V. Kusumah, Muhammad Afrisal","doi":"10.3897/aiep.54.113513","DOIUrl":"https://doi.org/10.3897/aiep.54.113513","url":null,"abstract":"Two specimens (290.2 and 309.5 mm in standard length) of the longnosed stargazer, Ichthyscopus lebeck (Bloch et Schneider, 1801), were recently collected from Jakarta Bay, Jakarta, Indonesia. Described more than two centuries ago, I. lebeck has hitherto been documented exclusively from the Northern Hemisphere, encompassing the Arabian Sea, southern coastal India, the Bay of Bengal, the Andaman Sea, and Singapore. The present paper documents the first record of the species in the Southern Hemisphere. Detailed descriptions of these specimens are provided, contributing valuable insights into the characteristics of I. lebeck in the newly reported locality.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"2 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139804065","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}
R. Aguilar‐Medrano, M. E. Vega-Cendejas, Ariel A. Chi Espínola
Harmful algal blooms (HABs) are natural phenomena that occur when colonies of microalgae grow out of control and produce toxic or harmful effects on the surrounding fauna. In August 2022, an HAB, dominated by the diatom, Cylindrotheca closterium (Ehrenberg) Reimann et J.C. Lewin, 1964, occurred on the Yucatan coast, southern Gulf of Mexico. In the presently reported study, two photo transects were established along the coastline, one at the onset of the bloom, at Telchac port, and the other at the final phase of the event, at Chixchulub port. The affected fish species were documented photographically and a taxonomic list, with their abundance, density, and biomass is presented, as well as a summary of the affected ecosystems according to the affinity of these species. A total of 54 species were recorded; 48 in Telchac and 21 in Chicxulub, with 15 species occurring at both sites. The affected species have a greater affinity to reef systems, beaches, and estuaries, in that order, between 3 m and 113 m depth. In the International Union for the Conservation of Nature (IUCN) nomenclature, the majority of the species are in the “least concern” category, however, species were also recorded in the “near threatened”, “vulnerable”, and “endangered” categories. Therefore, it is extremely important to monitor these events and report the affected species, since the increase in the frequency of these phenomena due to local and global factors can have significant repercussions on species endemic to the coastal zone.
{"title":"A checklist of dead fishes (Actinopterygii and Elasmobranchii) associated with the algal bloom event of the summer of 2022 on the Yucatan coasts, southern Gulf of Mexico","authors":"R. Aguilar‐Medrano, M. E. Vega-Cendejas, Ariel A. Chi Espínola","doi":"10.3897/aiep.53.112253","DOIUrl":"https://doi.org/10.3897/aiep.53.112253","url":null,"abstract":"Harmful algal blooms (HABs) are natural phenomena that occur when colonies of microalgae grow out of control and produce toxic or harmful effects on the surrounding fauna. In August 2022, an HAB, dominated by the diatom, Cylindrotheca closterium (Ehrenberg) Reimann et J.C. Lewin, 1964, occurred on the Yucatan coast, southern Gulf of Mexico. In the presently reported study, two photo transects were established along the coastline, one at the onset of the bloom, at Telchac port, and the other at the final phase of the event, at Chixchulub port. The affected fish species were documented photographically and a taxonomic list, with their abundance, density, and biomass is presented, as well as a summary of the affected ecosystems according to the affinity of these species. A total of 54 species were recorded; 48 in Telchac and 21 in Chicxulub, with 15 species occurring at both sites. The affected species have a greater affinity to reef systems, beaches, and estuaries, in that order, between 3 m and 113 m depth. In the International Union for the Conservation of Nature (IUCN) nomenclature, the majority of the species are in the “least concern” category, however, species were also recorded in the “near threatened”, “vulnerable”, and “endangered” categories. Therefore, it is extremely important to monitor these events and report the affected species, since the increase in the frequency of these phenomena due to local and global factors can have significant repercussions on species endemic to the coastal zone.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139144976","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}
Roxanne A. Cabebe-Barnuevo, El Andro A. Obar, D. F. Penuela, H. Motomura, R. Babaran, M. Malay
In this study, we report the collection of moray eel species Gymnothorax nudivomer (Günther, 1867) and Strophidon dorsalis (Seale, 1917) from the Western Visayas region, Philippines. Both represent new records for the country. A single specimen of G. nudivomer measuring 619 mm total length (TL) was collected from Iloilo Fish Port Complex, Iloilo and a specimen of S. dorsalis measuring 777 mm TL was collected from the fish market of Batan, Aklan. Detailed morphological descriptions and mitochondrial cytochrome oxidase I (COI) barcode sequences are provided. A comprehensive list of geographic records for both species, as well as a list of all species representing the genera Gymnothorax and Strophidon reported in the Philippines is also provided in this report.
{"title":"Two new records of moray eels representing genera Gymnothorax and Strophidon (Actinopterygii: Anguilliformes: Muraenidae) from the Philippines","authors":"Roxanne A. Cabebe-Barnuevo, El Andro A. Obar, D. F. Penuela, H. Motomura, R. Babaran, M. Malay","doi":"10.3897/aiep.53.108838","DOIUrl":"https://doi.org/10.3897/aiep.53.108838","url":null,"abstract":"In this study, we report the collection of moray eel species Gymnothorax nudivomer (Günther, 1867) and Strophidon dorsalis (Seale, 1917) from the Western Visayas region, Philippines. Both represent new records for the country. A single specimen of G. nudivomer measuring 619 mm total length (TL) was collected from Iloilo Fish Port Complex, Iloilo and a specimen of S. dorsalis measuring 777 mm TL was collected from the fish market of Batan, Aklan. Detailed morphological descriptions and mitochondrial cytochrome oxidase I (COI) barcode sequences are provided. A comprehensive list of geographic records for both species, as well as a list of all species representing the genera Gymnothorax and Strophidon reported in the Philippines is also provided in this report.","PeriodicalId":503153,"journal":{"name":"Acta Ichthyologica et Piscatoria","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238795","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}
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