Acta Ichthyologica Et Piscatoria最新文献

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First record of two squirrelfishes, Sargocentron spinosissimum and Sargocentron tiereoides (Actinopterygii, Beryciformes, Holocentridae) from the Egyptian Mediterranean coast 埃及地中海沿岸的两种松鼠鱼的首次记录,棘棘棘尾蟾和铁尾棘尾蟾(Actinopterygii,Beryciformes,Holocentridae)
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63216
Lamiaa Elsayed Mokhtar Deef
{"title":"First record of two squirrelfishes, Sargocentron spinosissimum and Sargocentron tiereoides (Actinopterygii, Beryciformes, Holocentridae) from the Egyptian Mediterranean coast","authors":"Lamiaa Elsayed Mokhtar Deef","doi":"10.3897/AIEP.51.63216","DOIUrl":"https://doi.org/10.3897/AIEP.51.63216","url":null,"abstract":"Holocentrinae and Myripristinae (Holocentridae) are among the most apparent species in the nocturnal reef fish community. However, there is no clear assent regarding their phylogenetic relations, which is reported in their complicated taxonomic history. In this study, Sargocentron spinosissimum (Temminck et Schlegel, 1843) and Sargocentron tiereoides (Bleeker, 1853) were reported from the Mediterranean coast of Egypt (Damietta coast). This is the first record of these species which is greatly distributed across Indo-Pacific regions and eastern Africa showed the success of these species to migrate to the Mediterranean water with a good adaptation to the new habitats. In the presently reported study, 26 morphometric measurements were recorded and cytochrome c oxidase subunit I (COI) barcodes were recovered for a total of 20 specimens (8 from S. spinosissimum and 12 from S. tiereoides). The specimens from the Damietta coast, Egypt show character states diagnostic of S. spinosissimum: Head is curved. Spinous dorsal fin base straight. Soft dorsal fin base slightly raised. Spinous dorsal fin membranes red. Anterior margin of pelvic and anal fins white. Other fin rays are red. While character states diagnostic of S. tiereoides: Head is straight and pointed. Spinous dorsal fin base almost straight. Soft dorsal fin base not raised and spinous dorsal fin membranes vaguely red. Sequences of both species were submitted to the GenBank and Barcode of Life Database (BOLD) publication database which displayed 99%–100% similarity value S. tiereoides from GenBank and BOLD databases but, S. spinosissimum has not any deposited sequences from GenBank or BOLD. DNA barcoding based on COI gene was demonstrated as a powerful and useful molecular marker in the identification and differentiation of S. spinosissimum and S. tiereoides fish species.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"107-112"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45873568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Information source preferences of small-scale fishers in the Aegean Sea coast of Turkey 土耳其爱琴海沿岸小规模渔民的信息来源偏好
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63396
D. Durgun, C. Günden, Vahdet Ünal
{"title":"Information source preferences of small-scale fishers in the Aegean Sea coast of Turkey","authors":"D. Durgun, C. Günden, Vahdet Ünal","doi":"10.3897/AIEP.51.63396","DOIUrl":"https://doi.org/10.3897/AIEP.51.63396","url":null,"abstract":"Information source preferences of small-scale fishers can play a role in decision-making processes and affect the sustainability of smallscale fisheries. In this respect, determining useful communication tools to eliminate the information gaps and lack of information of fishers is important for sustainable and effective fisheries management. The purpose of this study was the determination of the preferred source of information and priorities of the small-scale fishers who operate along the Aegean Sea coast of Turkey. Data were collected from a random sample of 278 small-scale Turkish fishers located along the Aegean coastline via face-to-face interviews. Information source preferences of fishers were determined by Repertory Grid Technique. In the analysis, obtaining information about fisheries focused on three criteria such as marine ecology, fisheries technology, and fisheries policies. The level of importance given by fishers for each criterion was determined. Fishers prefer to get information from other fishers, followed by fishery cooperatives, and their own experiences (χ2 (11, n = 278) = 1305.920, P < 0.001). Fishery cooperatives are the closest organizations to fishers. The use of cooperatives as a source of information can be interpreted as an element that can facilitate access to information when evaluated through the “availability” of behavioral economics. Fishery cooperatives, which stand out in fishers’ information source preferences, have the potential to be a valuable source of information in all aspects. The results of the research are thought to benefit researchers from non-governmental organizations, research institutes, and universities that carry out national and international projects with fishers.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"47-52"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41780270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Evaluating the size at sexual maturity for 20 fish species (Actinopterygii) in wetland (Gajner Beel) ecosystem, north-western Bangladesh through multi-model approach: A key for sound management 通过多模型方法评估孟加拉国西北部湿地生态系统中20种放光鱼类(Actinopterygii)的性成熟大小:健全管理的关键
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63339
Md. Rabiul Hasan, M. Y. Hossain, Z. Mawa, S. Tanjin, Md. Ashekur Rahman, U. Sarkar, J. Ohtomi
{"title":"Evaluating the size at sexual maturity for 20 fish species (Actinopterygii) in wetland (Gajner Beel) ecosystem, north-western Bangladesh through multi-model approach: A key for sound management","authors":"Md. Rabiul Hasan, M. Y. Hossain, Z. Mawa, S. Tanjin, Md. Ashekur Rahman, U. Sarkar, J. Ohtomi","doi":"10.3897/AIEP.51.63339","DOIUrl":"https://doi.org/10.3897/AIEP.51.63339","url":null,"abstract":"Effective fisheries management depend on having an exact assessment of biological parameters, including growth parameters, reproduction, size at sexual maturity (Lm), and stock assessment. The purpose of this research was to estimate the size at sexual maturity (Lm) for 20 fish species belongs to 14 families from a wetland (Gajner Beel) ecosystem in the north-western (NW) Bangladesh through multi-models such as length (Lmax) based empirical model, gonadosomatic index (GSI)-based model, and logistic model using commercial catches from January to December 2018. Also, we assessed the Lm in other water-bodies worldwide. Specimens’ total length (TL) was noted up to 0.1 cm using measuring board body weight (BW) and gonad weight (GW) weighed by digital electronic balance with 0.01 g accuracy. To assess the Lm, maximum body length (Lmax) based empirical model; the relation between TL (total length in cm) vs. GSI (gonadosomatic index in %); and a logistic model were considered. The minimum Lm was 4.64, 3.90, and 4.15 cm for Chanda nama Hamilton, 1822 and the maximum was 25.33, 24.50, and 24.70 cm for Channa striata (Bloch, 1793) through Lmax, GSI, and logistic-based models, respectively. From these three models, the minimum mean Lm was 4.23 cm for C. nama and the maximum was 24.84 cm for C. striata. The Lm with 50.0% species was in 8.80 cm TL. We also calculated the Lm from different bodies of water based on Lmax. This study was generated data of 17 new Lm among 20 species, which are globally absent. Therefore, the study will help develop sustainable management strategies, conservation through the implementation of mesh size based on the size at sexual maturity (Lm).","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"29-36"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48848781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Redescription of a rare cusk eel, Pycnocraspedum squamipinne (Actinopterygii, Ophidiiformes, Ophidiidae), from Bay of Bengal 孟加拉湾一种罕见棘鳝的再描述(放线鱼科,蛇形目,蛇科)
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63469
J. Teena, A. Murugan, Ajith T. T. Kumar, K. Lal
{"title":"Redescription of a rare cusk eel, Pycnocraspedum squamipinne (Actinopterygii, Ophidiiformes, Ophidiidae), from Bay of Bengal","authors":"J. Teena, A. Murugan, Ajith T. T. Kumar, K. Lal","doi":"10.3897/AIEP.51.63469","DOIUrl":"https://doi.org/10.3897/AIEP.51.63469","url":null,"abstract":"Pycnocraspedum squamipinne Alcock, 1889 is a rare species of pelagic cusk eel described from specimens collected off the Bay of Bengal. The descriptive literature on P. squamipinne is limited to the original description owing to the rarity in collections. The genus and the species need a thorough revision to identify specific characters of taxonomic importance as the descriptive information regarding the species in the genus Pycnocraspedum is limited to the holotypes and syntypes. Fifteen fresh specimens of P. squamipinne were collected from the Chennai coast, Tamil Nadu, Bay of Bengal region. The syntypes of P. squamipinne (ZSI F 11700 and ZSI F 11703) available at the Zoological Survey of India, Kolkata were examined. The morphometric and meristic characters of P. squamipinne were compared with those of syntypes and other species of the genus. Molecular analysis was carried out using partial mtDNA cytochrome oxidase subunit I gene (COI). The specimen is deposited in the national fish repository of the ICAR, National Bureau of Fish Genetic Resources, Lucknow, India. A detailed redescription of P. squamipinne based on the syntypes and fifteen recently collected specimens are provided. A detailed comparison with other species of the genus is also provided which helps in establishing the taxonomic identity of P. squamipinne. Molecular information was generated which would help in the species identification of this rare deep-sea species. This study provides morphological and molecular information of the rare cusk eel, P. squamipinne, which would help in the precise identification of the species. However, due to paucity, the majority of species of the genus are still only known from single specimens and comprehensive examination of holotypes and intensive sampling is needed to better understand the species identity and distribution.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"77-83"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70393093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Fish communities in high-latitude mangrove in north-western Mexico 墨西哥西北部高纬度红树林中的鱼类群落
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63429
J. Á. Payán-Alcacio, Gustavo De la Cruz-Agüero, V. Cruz-Escalona, R. Moncayo-Estrada
{"title":"Fish communities in high-latitude mangrove in north-western Mexico","authors":"J. Á. Payán-Alcacio, Gustavo De la Cruz-Agüero, V. Cruz-Escalona, R. Moncayo-Estrada","doi":"10.3897/AIEP.51.63429","DOIUrl":"https://doi.org/10.3897/AIEP.51.63429","url":null,"abstract":"Studying fish communities in extreme habitats is important to better understand the variation in their ranges under climatic scenarios or anthropogenic pressure. In particular, the mangroves in Baja California Sur occupy the northernmost distribution range under two extreme conditions (temperate waters and arid weather). In this context, the aim of the presently reported study was to analyze the functional characteristics of ichthyofauna in two localities, La Paz Bay (BP) and Almejas Bay (BA), which are also located in different ecoregions. For both bays, the composition and frequency values were compiled from monthly samples and the literature. Eleven functional traits were assessed from the morphology of every fish species. Functional indices (Richness, Evenness, Divergence, and Originality) were used to evaluate different aspects of the community structure. A total of 83 species were found at both sites, with 54 in BP and 50 in BA. In BP, six species were residents, eight were temporal visitors, and 36 were occasional visitors. In BA, six species were residents, 15 species were temporal visitors, and 33 were occasional visitors. At both sites, 12% of the species were permanent residents; BA had a higher percentage of temporal residents (27%), while BP had a higher percentage of occasional visitors (72%). The functional analysis detected communities with specialized traits, but in comparison to BP, BA had higher evenness in the community structure. Although greater structural complexity was expected in the community during the warm months, because of the increase in richness and attributes, BA had higher values during the cold months, which was probably because the area is a transition zone and the fish communities are adapted to colder climates. In comparison to BA, BP had higher originality values, and colder months presented higher values than warmer months. Although the mangrove sites had the same northernmost latitudinal limits and both had extreme conditions compared to those in mangroves in tropical environments, the fish communities differed in their composition, frequency, and functionality with more extreme functional traits in colder weather than in warmer weather.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"1-11"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45021190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
First data on the structure of the vertebral column in Gobio and Romanogobio species (Actinopterygii, Cypriniformes, Gobionidae) from Ohrid Lake and the Vardar River basin Ohrid湖和Vardar河流域的Gobio和Romanogobio物种(Actinopterygii,Cypriniformes,Gobiodae)脊柱结构的首次数据
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63489
J. Arsovska, M. Ristovska, P. Simonović, V. Kostov, Valentina Slavevska-Stamenković
{"title":"First data on the structure of the vertebral column in Gobio and Romanogobio species (Actinopterygii, Cypriniformes, Gobionidae) from Ohrid Lake and the Vardar River basin","authors":"J. Arsovska, M. Ristovska, P. Simonović, V. Kostov, Valentina Slavevska-Stamenković","doi":"10.3897/AIEP.51.63489","DOIUrl":"https://doi.org/10.3897/AIEP.51.63489","url":null,"abstract":"The validity of four gudgeon species known for the ichthyofauna of North Macedonia has been a matter of different taxonomic disputes (except for Gobio ohridanus Karaman, 1924). Recently, a restoration of the species status was proposed for Gobio balcanicus Dimovski et Grupče, 1977 and Romanogobio banarescui (Dimovski et Grupče, 1974). So far, Romanogobio stankoi (Karaman, 1974), has not been a part of any recent investigation and it is still considered as a junior synonym of Romanogobio elimeius (Kattoulas, Stephanidis et Economidis, 1973) or R. banarescui due to the lack of distinctive morphological characters. The osteological characters in the structure of the vertebral column, have significance to the systematics of the gudgeons, especially in elevation of Romanogobio at the level of genus. To contribute to resolving the taxonomic status in these gudgeon species, the goal of this paper is to identify distinctive characters by presenting and analyzing the structure of their vertebral column. Samples were inspected from the fish collections in the Institute of Biology (G. ohridanus), the Institute of Animal Science (G. balcanicus), and the Macedonian Museum of Natural History (both Romanogobio species). Fish samples were X-rayed as well as cleared and double-stained. Obtained data on the number of vertebrae were presented through the vertebral formula following Naseka (1996). Multiple Correspondence Analysis (MCA) was used to check the interrelation between taxa and the number of vertebrae in all units of the vertebral column. G. balcanicus is distinguished from G. ohridanus mainly in the predorsal and preanal subregion (10 vs. 11 vertebrae and 1 vs. 0 vertebrae, respectively), while R. stankoi distinguishes from R. banarescui by the number of vertebrae in the preanal and postanal subregion (2 vs. 4 vertebrae and 19 vs. 17 vertebrae, respectively). The structure of vertebral column offers distinctive morphological characters for the four gudgeon species from Ohird Lake and the Vardar River basin.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"37-45"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43149396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Feeding habits of the spotted rose snapper, Lutjanus guttatus, (Actinopterygii, Perciformes, Lutjanidae), in the central Gulf of California, BCS, Mexico 墨西哥BCS加利福尼亚湾中部斑点玫瑰鲷的摄食习性(放线鱼科,鲈形目,斑点玫瑰鲷科)
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63227
F. L. Valle-López, X. Moreno-Sánchez, M. S. Irigoyen-Arredondo, L. A. Abitia-Cárdenas, Emigdio Marín-Enríquez, J. Ramírez‐Pérez
{"title":"Feeding habits of the spotted rose snapper, Lutjanus guttatus, (Actinopterygii, Perciformes, Lutjanidae), in the central Gulf of California, BCS, Mexico","authors":"F. L. Valle-López, X. Moreno-Sánchez, M. S. Irigoyen-Arredondo, L. A. Abitia-Cárdenas, Emigdio Marín-Enríquez, J. Ramírez‐Pérez","doi":"10.3897/AIEP.51.63227","DOIUrl":"https://doi.org/10.3897/AIEP.51.63227","url":null,"abstract":"The spotted rose snapper, Lutjanus guttatus (Steindachner, 1869), is an important resource for the coastal fisheries of the Gulf of California, mainly due to its high commercial value. Despite this, there are no management measures for this species, owing in part to a lack of information on its basic biology and its trophic ecology in the area. In this context, the presently reported study had as objective to describe the feeding habits of L. guttatus through stomach content analyses, as well as to describe possible changes linked to sex, size, and season. Specimens were caught monthly from June 2016 to September 2017 with gillnets in Santa Rosalía, BCS, Mexico. The abundance, weight, and frequency of occurrence of each prey were assessed, and these parameters were integrated into the index of relative importance (%IRI) to determine the importance of each prey item in the L. guttatus diet. The Levin’s index was used to assess the trophic niche width of the species, the feeding strategy was evaluated using Costello’s graphic method and the trophic level was calculated. Finally, to establish whether there were significant differences in the diet by sex, size, or season a PERMANOVA test was used with a 95% confidence level. A total of 202 L. guttatus stomachs were analyzed, 191 of which contained food. A total of 26 prey items were identified. According to the %IRI, the most important prey were the teleost fishes Harengula thrissina (Jordan et Gilbert, 1882) (45.7%) and Sardinops sagax (Jenyns, 1842) (34.8%), the euphausiid Nyctiphanes simplex (13.4%), and the crustacean Penaeus spp. (5.6%). The PERMANOVA analysis resulted in significant differences between the analyzed categories; however, there were no significant differences in the interactions among the categories. According to Levin’s index, L. guttatus had a narrow trophic width, with changes in the main prey consumed by the different categories. According to our results, L. guttatus can be considered a benthopelagic opportunistic carnivorous predator with a narrow trophic niche, presenting mostly quantitative variations in its diet according to sex, size, and season. Its trophic plasticity allows it to take advantage of the most available and abundant food resources.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"95-105"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48338588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Population dynamics of an emergent invasive fish, striped piggy, Pomadasys stridens (Actinopterygii, Perciformes, Haemulidae) in the Gulf of İskenderun, north-eastern Mediterranean 地中海东北部İskenderun湾一种突发性入侵鱼斑纹猪的种群动态
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63320
D. Avşar, Sinan Mavruk, Hacer Yeldan, M. Manasirli
{"title":"Population dynamics of an emergent invasive fish, striped piggy, Pomadasys stridens (Actinopterygii, Perciformes, Haemulidae) in the Gulf of İskenderun, north-eastern Mediterranean","authors":"D. Avşar, Sinan Mavruk, Hacer Yeldan, M. Manasirli","doi":"10.3897/AIEP.51.63320","DOIUrl":"https://doi.org/10.3897/AIEP.51.63320","url":null,"abstract":"The striped piggy, Pomadasys stridens (Forsskål, 1775), is a recent invasive fish species in the eastern Mediterranean. Although its population dynamics was investigated in detail in its natural distribution area, the western Indian Ocean, an important data gap still exists in the Mediterranean. This study was carried out to determine the growth, mortality, and the length–weight and length–length relations of invasive striped piggy right after its establishment in the area. Samples were collected seasonally between April 2014 and December 2015 by using bottom trawl from 10 and 20 m depth contours off the north-western coast of the Gulf of Iskenderun. After the length, weight, and sex of fish were recorded, sagittal otoliths were extracted and examined for age determination. Then length–length, length–weight, and length at age relations, growth performance, and mortality rates were calculated for both sexes and pooled data. In the study, a total of 1131 individuals were investigated, the total length of which ranged between 7.3 and 18.9 cm. The mean length was 12.32 ± 0.11 cm. There was no significant difference between the length–weight relation (LWR) parameters of sexes and pooled data. The overall LWR was found to be TW = 0.0113 * TL^3.096 in all specimens. The von Bertalanffy growth parameters were not significantly different between males and females. The model parameters for both sexes were L∞ = 22.01 cm, K = 0.22 years –1, t0 = –1.30 years. The growth performance index (Ø′) was calculated as Ø′ = 2.03. For combined sexes, the total, natural and fishery mortality rates were Z = 1.14 years–1, M = 0.66 years–1, and F = 0.48 years–1, respectively. The exploitation rate of the stock was found to be E = 0.42. The growth performance of the invasive striped piggy population was determined to be similar to the ones reported from the Gulf of Suez where was the closest natural distribution area of the species. Although striped piggy is proper for human consumption and commercially caught in its native range, its fishery has not yet been established in the Eastern Mediterranean and we found that there was insufficient fishery pressure on the invasive population.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"186 1","pages":"13-21"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70393030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Assessment of morphological variation between stocks of bluefish, Pomatomus saltatrix (Actinopterygii, Perciformes, Pomatomidae), in the Aegean Sea, Black Sea, and Sea of Marmara 爱琴海、黑海和马尔马拉海蓝鱼种群形态差异的评价
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63319
H. Bal, T. Yanik, D. Türker
{"title":"Assessment of morphological variation between stocks of bluefish, Pomatomus saltatrix (Actinopterygii, Perciformes, Pomatomidae), in the Aegean Sea, Black Sea, and Sea of Marmara","authors":"H. Bal, T. Yanik, D. Türker","doi":"10.3897/AIEP.51.63319","DOIUrl":"https://doi.org/10.3897/AIEP.51.63319","url":null,"abstract":"The population structure of the bluefish, Pomatomus saltatrix (Linnaeus, 1766), in Turkish waters is scarcely described in the literature. To identify any distinct population units of bluefish, and reaffirm the findings of a previous study, four areas were selected: the Aegean Sea, western Black Sea, eastern Black Sea, and the Sea of Marmara. In this study, truss network morphometrics, meristics, and otolith shape analyses were successfully applied for different population identification of the bluefish. Multivariate analysis of variance (MANOVA) revealed no differences for truss network morphometrics, meristic, and otolith shape characters between males and females. Hence, both sexes were combined for the discriminant function (DFA) and the Principal Component Analysis (PCA). Using univariate ANOVA based on the stepwise method revealed a highly significant difference among different locations for each truss-morphometrics and otolith shape characters. Furthermore, six out of seven meristic characters also showed significant differences between different areas. Based on PCA, 25 out of 27 truss-morphometric characters had a loading value above 0.70, which was considered significant in this study. The results of DFA show clear patterns of truss-morphometric character variations, forming four distinct clusters that were well separated from each other, indicating the existence of four morphologically differentiated populations of the bluefish. The proportion of the correctly classified Aegean Sea, western Black Sea, and eastern Black Sea bluefish samples to their original groups were 100%, demonstrating clear separation of these stocks from each other. Whereas up to 5% of the total samples of the Sea of Marmara were incorrectly classified, assigning to the eastern Black Sea. These findings were supported by meristic and otolith shape characters that also indicated four morphologically differentiated populations of the bluefish. However, their overall proportion of correct classification was relatively lower than the truss-morphometric traits method. The findings suggest the requirement of strategic assessment and management of each bluefish stock separately to use them sustainably in the future.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"85-94"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43084533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Comparative osteology of three endemic cichlids (Iranocichla spp.) (Actinopterygii, Perciformes, Cichlidae) from southern Iran 伊朗南部三种地方性慈鲷(Iranocihla spp.)(放线鳍目、鲈形目、慈鲷科)的骨学比较
IF 1 4区 农林科学
Acta Ichthyologica Et Piscatoria Pub Date : 2021-03-31 DOI: 10.3897/AIEP.51.63218
Neda Dastanpoor, Y. Keivany, E. Ebrahimi
{"title":"Comparative osteology of three endemic cichlids (Iranocichla spp.) (Actinopterygii, Perciformes, Cichlidae) from southern Iran","authors":"Neda Dastanpoor, Y. Keivany, E. Ebrahimi","doi":"10.3897/AIEP.51.63218","DOIUrl":"https://doi.org/10.3897/AIEP.51.63218","url":null,"abstract":"Iranian cichlids are isolated disjunct populations of the African cichlids group, restricted to the Hormuz Strait region in the Hormuz basin, and are a very important group from both zoogeographic and phylogenetic points of view. Thus, the osteological structures, as one of the most reliable structures, of the three nominal species of Iranian cichlid fishes, Iranocichla hormuzensis Coad, 1982, from the Mehran River, Iranocichla persa Esmaeili, Sayyadzadeh et Seehausen, 2016, from Khorgo hot spring, and Iranocichla sp., from the Kol River were described and compared. Ten specimens of each species were cleared and stained with Alcian blue and Alizarin red. A digital camera was used for taking pictures and CorelDraw X6 software for preparing drawings. The three species have some differences in the caudal fin skeleton, shape of the urostyle, neural spine of preural 2, hypural spines 2, and 3, anterior part of parhypural and hypurapophysis, the size of neural spines of preural 2 and 3, hypural 3 and 4, and epurals. Although there are some differences among the species, osteology of these species is very conservative and other traits like behavioral and molecular should be used.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"51 1","pages":"67-75"},"PeriodicalIF":1.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46002504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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