Acta Ichthyologica Et Piscatoria最新文献

{"title":"Length–weight relations for 19 freshwater fish species (Actinopterygii) from the lowland Elbe River, Germany","authors":"Janek Simon, Wolf-Christian Lewin, Erik Fladung","doi":"10.3897/aiep.53.107199","DOIUrl":"https://doi.org/10.3897/aiep.53.107199","url":null,"abstract":"Monthly and mean length–weight relations (LWRs) were calculated for 19 freshwater fish species from the middle section of the lowland Elbe River (Germany): Abramis brama (Linnaeus, 1758); Alburnus alburnus (Linnaeus, 1758); Anguilla anguilla (Linnaeus, 1758); Ballerus ballerus (Linnaeus, 1758); Blicca bjoerkna (Linnaeus, 1758); Cobitis taenia Linnaeus, 1758; Esox lucius Linnaeus, 1758; Gobio gobio (Linnaeus, 1758); Gymnocephalus cernua (Linnaeus, 1758); Leuciscus aspius (Linnaeus, 1758); Leuciscus idus (Linnaeus, 1758); Leuciscus leuciscus (Linnaeus, 1758); Lota lota (Linnaeus, 1758); Perca fluviatilis Linnaeus, 1758; Romanogobio albipinnatus (Lukasch, 1933); Rutilus rutilus (Linnaeus, 1758); Sander lucioperca (Linnaeus, 1758); Scardinius erythrophthalmus (Linnaeus, 1758); and Squalius cephalus (Linnaeus, 1758). The values of the exponent b in the LWR W = aTLb ranged from 2.882 (Lota lota) to 3.517 (Cobitis taenia) and the correlation coefficient (r2) was greater than 0.96 for all species except for Cobitis taenia with 0.93. The relations allow for the accurate estimation of weight from length data with reduced handling times of fish in the field while enabling comparisons with other regions and future studies. The calculated LWRs together with species-specific abundance and catch data will be useful for fisheries modeling and estimating population status and related fish species protection, especially for the endangered species in the Elbe River.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49089680","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}

{"title":"First record of Mastacembelus notophthalmus (Actinopterygii: Synbranchiformes: Mastacembelidae) for Belitung Island, Indonesia","authors":"V. Hasan, Lucas O. Vieira, J. South, F. Ottoni","doi":"10.3897/aiep.53.105318","DOIUrl":"https://doi.org/10.3897/aiep.53.105318","url":null,"abstract":"This study was conducted aiming to record for the first time the occurrence of Mastacembelus notophthalmus Roberts, 1989 in Belitung Island (Indonesia), and update the geographic distribution of this species. Although this species is categorized as LC according to the IUCN Red List, it is rarely reported in fish inventories, with few specimens sampled. Moreover, data on the geographic distribution, population size, and other population details of M. notophthalmus are scarce and insufficient to predict possible threats and propose appropriate conservation measures and policies. A single specimen of Mastacembelus was collected using a fish trap on 20 February 2023, in a swamp, located in the middle course of the Lenggang River, Belitung Island, Indonesia. This specimen was identified as M. notophthalmus and this finding constitutes the southernmost record for this species, expanding its geographic range. In addition, the new record site is about 700 km south-east of the nearest locality in Peninsular Malaysia, about 250 km south-east of the nearest locality in Bangka Island, about 600 km south-east of the nearest locality in Sumatra, and about 500 km south-west from the nearest locality in Borneo. Better ecological and biological data concerning distribution, habitat, and stressors is crucial to reassess the conservation status of M. notophthalmus, and possible future conservation measures and policies. Therefore, we emphasize here the urgency for more comprehensive and accurate data to facilitate conservation assessments and management in Indonesia.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42083104","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}

{"title":"New records of ray-finned fishes (Actinopterygii) from Puerto Morelos Reef National Park (Mexican Caribbean)","authors":"Francisco Martínez-Servín, Yareli Margarita López-Arroyo, Aurora Lizeth Moreno-Vázquez, D. R. Robertson, Alfrancis Teresa Arredondo-Chávez, Juan Antonio Sánchez-Jiménez, Oscar Gabriel Ávila-Morales, Xavier Madrigal-Guridi, J. A. Caballero-Vázquez, J. J. Schmitter-Soto, O. Domínguez‐Domínguez, M. G. Solís-Guzmán","doi":"10.3897/aiep.53.101239","DOIUrl":"https://doi.org/10.3897/aiep.53.101239","url":null,"abstract":"We documented the nearshore ray-finned fishes in Puerto Morelos Reef National Park (PMRNP) by sampling 57 localities, including rocky intertidal pools, sandy bottoms, Thalassia beds, coral reefs, artificial reefs, karstic-slab bottoms, demersal-pelagic areas, and sessile-Sargassum patches. We recorded seven species new to Caribbean Mexican waters and one hundred and six species new to the PMRNP, most of which are small cryptobenthic reef fish. The resultant checklist includes 349 species, and specimens of 285 of which (81.7%) have been deposited in an ichthyological museum collection. These include both voucher organisms and with tissue samples for genetic analysis. A comparison with inventories at other localities of the Greater Caribbean indicates that more targeted sampling for cryptobenthic and deep-reef fishes is needed to provide a complete inventory. We also comment on the local use of some species as fishery resources.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48340471","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}

{"title":"Parasites as biological tags of divergence of black-striped pipefish, Syngnathus abaster (Actinopterygii: Syngnathiformes: Syngnathidae), populations in their natural and acquired range","authors":"V. Yuryshynets, Y. Kvach, I. Syniavska, Oleksandra Shevchenko, Yuliia Kutsokon","doi":"10.3897/aiep.53.103246","DOIUrl":"https://doi.org/10.3897/aiep.53.103246","url":null,"abstract":"The presently reported study was intended to describe the current range of an Atlanto–Mediterranean fish, the black-striped pipefish, Syngnathus abaster Risso, 1827, in Ukrainian waters and to analyze biological tags (size parameters and parasites) of its different populations. The parasitological survey was carried at five different localities, including one marine site, two deltaic zones, and two localities in the middle Dnipro basin. The study provides comprehensive new data on parasites of the black-striped pipefish in Ukraine, with supporting data on its newly acquired freshwater range. A total of 21 parasite species (taxa) were revealed. Several parasite species were recorded for the first time on this host, i.e., Trichodinella epizootica (Raabe, 1950); Trypanosoma sp.; Bothriocephalus scorpii (Müller, 1776); Progrillotia dasyatidis Beveridge, Neifar et Euzet, 2004; Ophiotaenia europaea Odening, 1963; Cryptocotyle jejuna (Nicoll, 1907); Metorchis xanthosomus (Creplin, 1846); Tylodelphys clavata (von Nordmann, 1832); Holostephanus luehei Szidat, 1936; Contracaecum rudolphii Hartwich, 1964; Mothocya epimerica Costa in Hope, 1851; and Unionidae gen. sp. Formation of the species’ parasite component community depends entirely on environmental factors, with local parasite community features forming due to 1) presence of “marine” unicellular parasite species (ciliates) in marine localities (10‰–17‰ salinity) only, the community forming as a refraction of relative stenohalinity (Trichodina rectuncinata Raabe, 1958), findings of “marine” ciliate species in freshwater locations representing examples of successful osmoconformation (Trichodina partidisci Lom, 1962); or 2) presence of multicellular parasites in localities with abiotic/biotic conditions that allow completion of complex life cycles, such as those of trematodes (freshwater/marine mollusks as obligate first hosts) or cestodes (freshwater/marine invertebrates as intermediate hosts or marine/freshwater vertebrates as definitive hosts).","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45071616","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}

{"title":"New record of Chromis weberi (Actinopterygii: Ovalentaria: Pomacentridae) from Jeju Island, southern Korea","authors":"S. Myoung, J. Myoung, Min S. Woo, M. Kim, M. Kang, J. Park","doi":"10.3897/aiep.53.103531","DOIUrl":"https://doi.org/10.3897/aiep.53.103531","url":null,"abstract":"Discovering tropical marine species outside of their distribution limits is important for evaluating the impact of climate change on marine ecosystems. One specimen (31.6 mm standard length) of a tropical fish, Chromis weberi Fowler et Bean, 1928, representing the family Pomacentridae, was first recorded from Jeju Island, Korea, on 8 December 2021. It was characterized by black posterior margins of the preopercle and opercle and black upper and lower lobes of the caudal fin. A specimen of this species collected from Munseom was distinguished from Chromis xanthura (Bleeker, 1854) based on distinct differences in the tips of the upper and lower caudal fin lobes, which are not black in C. xanthura. In addition, C. weberi was easily distinguished from the other four species in the genus Chromis, by the mitochondrial DNA cytochrome c oxidase subunit I gene sequence (345 bp), with genetic distances ranging from 0.130 to 0.252. This study documents the first record of C. weberi in temperate Korean waters, implying a poleward range expansion for this species. The Korean name ‘geom-eun-jeom-ggo-ri-ja-ri-dom’ has been proposed for C. weberi.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45739172","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}

{"title":"Microfibers in the gut of invasive armored catfish (Pterygoplichthys spp.) (Actinopterygii: Siluriformes: Loricariidae) in an urban lake in the floodplain of the Grijalva River basin, Mexico","authors":"Gabriela Angulo-Olmos, Nicolás Álvarez-Pliego, A. Sánchez, R. Florido, M. Salcedo, A. Garrido-Mora, Allan K Cruz-Ramírez","doi":"10.3897/aiep.53.102643","DOIUrl":"https://doi.org/10.3897/aiep.53.102643","url":null,"abstract":"The intake of microplastics by freshwater fishes has been scarcely studied, and it is not yet clear whether the amount of particles these vertebrates ingest is associated with their feeding strategies. Hence, this study is focused on the suckermouth armored catfish (Pterygoplichthys spp.) under the hypothesis that, due to its detritivorous habits and demersal distribution, it may show evidence of the presence of microplastics in the sediments of a lake located in the Metropolitan Area of Villahermosa. A total of 21 organisms contained plastic microfibers throughout their digestive systems. These were treated with three solutions (hydrogen peroxide, potassium hydroxide, and sodium hypochlorite) to separate the microplastics. A total of 147 plastic particles of two categories were collected: microfibers (92%) and fragments (8%). Considering these results, as well as evidence in the literature, these species may constitute a global indicator of the incorporation into the trophic chain of microfibers deposited in the sediments of freshwater ecosystems.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45089182","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}

{"title":"Length–weight relations of 39 continental-shelf and deep-water fishes (Actinopterygii) from northwestern Gulf of México","authors":"Ariel A. Chi-Espínola, M. E. Vega-Cendejas, J. M. Hernández De Santillana","doi":"10.3897/aiep.53.101788","DOIUrl":"https://doi.org/10.3897/aiep.53.101788","url":null,"abstract":"Fishes from the northwestern Gulf of Mexico were surveyed during four oceanographic campaigns (February and October 2016, June and September 2017) using a shrimp trawl net and benthic sled net in 20 locations at depths that ranged from 43 to 3608 m. Length–weight relations (LWR) were estimated for 39 fish species (in alphabetical order): Bembrops gobioides (Goode, 1880); Centropristis philadelphica (Linnaeus, 1758); Chauliodus sloani Bloch et Schneider, 1801; Chlorophthalmus agassizi Bonaparte, 1840; Chloroscombrus chrysurus (Linnaeus, 1766); Citharichthys spilopterus Günther, 1862; Coelorinchus caelorhincus (Risso, 1810); Cyclopsetta chittendeni Bean, 1895; Cyclothone alba Brauer, 1906; Cyclothone braueri Jespersen et Tåning, 1926; Cyclothone pseudopallida Mukhacheva, 1964; Dibranchus atlanticus Peters, 1876; Epigonus pandionis (Goode et Bean, 1881); Fowlerichthys radiosus (Garman, 1896); Laemonema goodebeanorum Meléndez et Markle, 1997; Lagocephalus laevigatus (Linnaeus, 1766); Lepophidium brevibarbe (Cuvier, 1829); Lutjanus campechanus (Poey, 1860); Malacocephalus occidentalis Goode et Bean, 1885; Merluccius albidus (Mitchill, 1818); Micropogonias furnieri (Desmarest, 1823); Monolene sessilicauda Goode, 1880; Ogcocephalus declivirostris Bradbury, 1980; Peristedion greyae Miller, 1967; Porichthys plectrodon Jordan et Gilbert, 1882; Prionotus longispinosus Teague, 1951; Prionotus paralatus Ginsburg, 1950; Pristipomoides aquilonaris (Goode et Bean, 1896); Rhynchoconger flavus (Goode et Bean, 1896); Sardinella aurita Valenciennes, 1847; Saurida brasiliensis Norman, 1935; Sternoptyx diaphana Hermann, 1781; Symphurus diomedeanus (Goode et Bean, 1885); Synagrops bellus (Goode et Bean, 1896); Trachurus lathami Nichols, 1920; Trichiurus lepturus Linnaeus, 1758; Trichopsetta ventralis (Goode et Bean, 1885); Urophycis cirrata (Goode et Bean, 1896); Zalieutes mcgintyi (Fowler, 1952). The fish species studied represented 28 families (in alphabetical order): Antennariidae, Batrachoididae, Bembropidae, Bothidae, Carangidae, Chlorophthalmidae, Congridae, Cyclopsettidae, Cynoglossidae, Dorosomatidae, Epigonidae, Gonostomatidae, Lutjanidae, Macrouridae, Merlucciidae, Moridae, Ogcocephalidae, Ophidiidae, Phycidae, Sciaenidae, Serranidae, Sternoptychidae, Stomiidae, Synagropidae, Synodontidae, TetraodontidaeTrichiuridae, Triglidae. A new maximum standard length (SL) was recorded for Cyclothone alba, C. braueri, C. pseudopallida, and Lepophidium brevibarbe. A positive allometric growth was reported in nine species, negative allometric growth in 16 species, and isometric growth in 14 species.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47339578","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}

{"title":"Estimation of selectivity parameters for target and bycatch fishes of the trammel net fisheries in the northern Aegean Sea (eastern Mediterranean Sea)","authors":"Angeliki Adamidou, K. Touloumis, M. Koutrakis, Athanassios C. Tsikliras","doi":"10.3897/aiep.53.103358","DOIUrl":"https://doi.org/10.3897/aiep.53.103358","url":null,"abstract":"The size selectivity of trammel nets was investigated in the northern Aegean Sea using 10 different inner-panel mesh sizes ranging from 16 to 70 mm nominal mesh size (bar length). Selectivity estimates were made for the eight most abundant target and bycatch fish species, namely black scorpionfish, Scorpaena porcus Linnaeus, 1758; annular seabream, Diplodus annularis (Linnaeus, 1758); red mullet, Mullus barbatus Linnaeus, 1758; surmullet, Mullus surmuletus Linnaeus, 1758; round sardinella, Sardinella aurita Valenciennes, 1847; European hake, Merluccius merluccius (Linnaeus, 1758); greater weever, Trachinus draco Linnaeus, 1758; and blotched picarel, Spicara flexuosum Rafinesque, 1810, which accounted for 51.5% by number and 42.7% by weight of the fish caught with trammel nets in the sea trials. The SELECT method was used to estimate the selectivity parameters. Five different selectivity functions (i.e., normal scale, normal location, gamma, log-normal, and bi-normal) were applied with the bi-normal function providing the best fit as it had the lowest deviance value for all species and the lowest values for the dispersion parameter (D/df). The mesh size of 16 mm in most of the cases retained specimens below the size at first maturity (Lm). The mesh size of 19 mm seems more appropriate for red mullet, surmullet, and blotched picarel, the mesh size of 22 mm for annular seabream and round sardinella, while for European hake and black scorpionfish, the mesh size larger than 26 mm would be more appropriate.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47648011","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}

{"title":"A new record of Squalus montalbani (Chondrichthyes: Squaliformes: Squalidae) from the Nansha (Spratly) Islands, South China Sea","authors":"Meng-Yu. Zhang, Binbin Shan, Yan Liu, Liangming Wang, Changping Yang, Manting Liu, Qijian Xie, Dian-rong Sun","doi":"10.3897/aiep.53.103579","DOIUrl":"https://doi.org/10.3897/aiep.53.103579","url":null,"abstract":"The Indonesian greeneye spurdog (or a dogfish shark), Squalus montalbani Whitley, 1931, is widely distributed in the warm temperate to tropical waters of Indonesia, Philippines, the island of Taiwan, and Australia. Previous studies suggested that the distribution of dogfish shark species in the South China Sea is composed of two species, Squalus mitsukurii Jordan et Snyder, 1903 and Squalus brevirostris Tanaka, 1917. In March 2020 a dogfish shark specimen was collected from the Nansha (Spratly) Islands, South China Sea. We identified it as S. montalbani based on morphology and mitochondrial DNA barcoding. Our results confirmed the presence of S. montalbani in the South China Sea, leading us to conclude that it represents a new species record of the genus Squalus in the region. Furthermore, our findings demonstrate that the combined approach is highly effective in identifying Squalus species that share similar morphological characteristics.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46187271","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}

{"title":"Records of malformed sea catfishes (Ariopsis seemanni and Ariopsis guatemalensis) (Actinopterygii: Siluriformes: Ariidae) off San Blas (Mexican Pacific)","authors":"Felipe Guzmán-Morales, A. Ramos-Ávila, Mariana Díaz-Santana-Iturrios, Esperanza Granados-Amores, J. Granados-Amores","doi":"10.3897/aiep.53.101350","DOIUrl":"https://doi.org/10.3897/aiep.53.101350","url":null,"abstract":"Fish malformations can be an important hint for assessing the well-being of their populations and the quality of their habitats. Malformations have been observed in species of the order Siluriformes, including the family Ariidae. In this study, we report malformations in the blue sea catfish, Ariopsis guatemalensis (Günther, 1864), and the tete sea catfish, Ariopsis seemanni (Günther, 1864), collected in San Blas, Mexico. The malformations include missing eye, cleft lip, and malformed barbels. Such malformations could be blamed on substantial levels of pesticides in the environment, genetic factors, and/or a pathogenic effect of some parasites specific to the studied fish species.","PeriodicalId":6950,"journal":{"name":"Acta Ichthyologica Et Piscatoria","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43461488","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}