Environmental Biology of Fishes最新文献_第8页

Population density and zooplankton biomass influence anadromous juvenile river herring growth in freshwater lakes 种群密度和浮游动物生物量对淡水湖中溯河幼鱼生长的影响

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-07-02 DOI: 10.1007/s10641-024-01565-8

Matthew T. Devine, Steven Bittner, Allison H. Roy, Benjamin I. Gahagan, Michael P. Armstrong, Adrian Jordaan

{"title":"Population density and zooplankton biomass influence anadromous juvenile river herring growth in freshwater lakes","authors":"Matthew T. Devine, Steven Bittner, Allison H. Roy, Benjamin I. Gahagan, Michael P. Armstrong, Adrian Jordaan","doi":"10.1007/s10641-024-01565-8","DOIUrl":"https://doi.org/10.1007/s10641-024-01565-8","url":null,"abstract":"Anadromous river herring populations, collectively alewife (Alosa pseudoharengus) and blueback herring (Alosa aestivalis), have experienced a multi-century decline in abundance and distribution. These declines have been attributed in part to anthropogenic threats in freshwater ecosystems (e.g., habitat fragmentation, overharvest, water pollution, watershed development). An understanding of variability in juvenile productivity and growth is critical to developing restoration approaches. We characterized variability in juvenile river herring growth among 11 freshwater lakes in the northeastern USA. We used age estimates from otoliths and length measurements to calculate growth rates of juvenile river herring (n = 1452). We tested the effects of juvenile river herring densities, zooplankton (biomass and size), habitat area (based on thermocline depth), and water quality (temperature, nutrients, chlorophyll a) on juvenile growth. Mean monthly growth rates ranged from 0.56 to 1.41 mm/d and typically increased throughout the summer. Increased juvenile growth was best predicted by lower juvenile density (β = − 0.104, P < 0.001) and higher zooplankton biomass (β = 0.032, P < 0.05). Combined with information about juvenile densities and mortality, these results broaden the understanding of anadromous juvenile river herring productivity, provide information that can contribute to refining stock assessment and life cycle models, and help to better understand the potential impacts of habitat conservation and restoration decisions.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"30 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Brain form and foraging behaviour in a stream fish 溪流鱼类的大脑形态和觅食行为

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-06-29 DOI: 10.1007/s10641-024-01567-6

Pria N. Mahabir, Caraline Billotte, Marie K. Gutgesell, Matthew M. Guzzo, Kevin S. McCann, Nicholas J. Bernier, Frédéric Laberge

{"title":"Brain form and foraging behaviour in a stream fish","authors":"Pria N. Mahabir, Caraline Billotte, Marie K. Gutgesell, Matthew M. Guzzo, Kevin S. McCann, Nicholas J. Bernier, Frédéric Laberge","doi":"10.1007/s10641-024-01567-6","DOIUrl":"https://doi.org/10.1007/s10641-024-01567-6","url":null,"abstract":"Brain form (i.e., brain size and morphology) has been linked to variation in foraging behaviour among species of fishes in lakes and oceans, such as larger brains associated with fish foraging higher in the food chain. However, much less is known about these relationships across habitats, or in stream fishes. Therefore, we explore relationships between foraging behaviour and brain form in the omnivorous creek chub (Semotilus atromaculatus) across different streams of Southwest Ontario, Canada. We assessed foraging behaviour variables (i.e., trophic position, proportion of terrestrial energy in diet and foraging flexibility on aquatic and terrestrial resources) against brain form (i.e., relative brain size and the proportional size of the cerebellum, hypothalamus, olfactory bulbs, optic tectum, and telencephalon). Principal component analysis was used to extract covariation patterns among the size of brain regions. We found that creek chub brain size is positively associated with trophic position and proportion of terrestrial energy in diet, but not foraging flexibility. The first principal component, explaining 91% of size covariation among brain regions, was also positively associated with trophic position but not with proportion of terrestrial energy in diet suggesting that brain regions outside of those measured contribute to the association between brain size and proportion of terrestrial energy in diet. Our results suggest that a relationship between brain size and trophic position may be common among fishes, and that foraging on resources from the terrestrial energetic pathway in streams may present a novel, yet to be characterized cognitive challenge for fish.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"32 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evidence of reproductive and feeding habitat for manta rays off Florida’s Atlantic coast 佛罗里达大西洋沿岸蝠鲼繁殖和觅食栖息地的证据

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-06-26 DOI: 10.1007/s10641-024-01566-7

Jessica Pate

引用次数: 0

Effects of Different Stocking Densities on the Growth, Antioxidant Status, and Intestinal Bacterial Communities of Carp in the Rice–Fish Co-Culture System 不同放养密度对稻鱼共养系统中鲤鱼生长、抗氧化状态和肠道细菌群落的影响

4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-06-21 DOI: 10.3390/fishes9070244

Weixu Diao, Rui Jia, Yiran Hou, Jianyou Gong, Liqiang Zhang, Bing Li, Jian Zhu

{"title":"Effects of Different Stocking Densities on the Growth, Antioxidant Status, and Intestinal Bacterial Communities of Carp in the Rice–Fish Co-Culture System","authors":"Weixu Diao, Rui Jia, Yiran Hou, Jianyou Gong, Liqiang Zhang, Bing Li, Jian Zhu","doi":"10.3390/fishes9070244","DOIUrl":"https://doi.org/10.3390/fishes9070244","url":null,"abstract":"Common carp (Cyprinus carpio) is a freshwater fish commonly farmed in rice fields, yet there were few studies on the intestinal functions and microbial community structure of common carp in the rice–carp co-culture system. Therefore, this study aimed to explore the effects of different stocking densities on the growth, antioxidant status, and intestinal bacterial composition of common carp in this system. This study was divided into three different stocking densities, including low density (LD, 10 fish, 52.9 g/m2), medium density (MD, 20 fish, 105.8 g/m2), and high density (HD, 30 fish, 158.7 g/m2), with a culturing period of 60 days. The results indicated that HD treatment inhibited the growth of common carp, as evidenced by the reduced final weight, WG, and SGR. In serum, the TG content in the HD group and the Cor content in the MD group were significantly increased. Meanwhile, HD treatment induced oxidative stress, manifesting specifically as increased SOD and CAT activities in the intestine or serum while reducing Gpx, GSH, and T-AOC in the serum. The 16S rDNA analysis indicated that the Simpson and Shannon indices of intestinal microbiota in the HD group were significantly higher than those in the LD group. At the phylum level, Proteobacteria, Cyanobacteria, and Firmicutes were dominant microbial communities in two groups. In addition, there was a significant difference between the two groups in the abundances of Actinobacterota and Bifidobacterium. Based on growth performances, biochemical indicators, and microbial diversity in rice–carp co-culture, low density (52.9 g/m2) may be more suitable in the rice–carp co-culture systems. In summary, this study contributes to a better understanding of common carp response to different stocking densities in the rice–carp co-culture system.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"9 7","pages":"244-244"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2410-3888/9/7/244/pdf?version=1718973809","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Diet of age-0 tarpon Megalops atlanticus near their northern range limit in the western Atlantic Ocean 大西洋西部 0 龄鲢 Megalops atlanticus 在其北部分布极限附近的食谱

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-06-20 DOI: 10.1007/s10641-024-01563-w

Marvin M. Mace, Derek P. Crane, Matthew E. Kimball, Juliana M. Harding, Justin McNabb

{"title":"Diet of age-0 tarpon Megalops atlanticus near their northern range limit in the western Atlantic Ocean","authors":"Marvin M. Mace, Derek P. Crane, Matthew E. Kimball, Juliana M. Harding, Justin McNabb","doi":"10.1007/s10641-024-01563-w","DOIUrl":"https://doi.org/10.1007/s10641-024-01563-w","url":null,"abstract":"The Atlantic tarpon Megalops atlanticus is a tropical-subtropical fish that occupies mangrove and salt marsh habitats during the first year of life. Diet during the first few months of life can have substantial effects on growth and survival of fishes. The purpose of our study was to examine the diet of age-0 tarpon in the North Inlet-Winyah Bay estuarine system, located near the northern extent of their distribution in the western Atlantic Ocean. We examined stomach contents to characterize tarpon diet and relate tarpon feeding to water temperature. The most important prey items based on the frequency of occurrence and proportion by weight indices were small fishes and crustaceans, whereas copepods were the most important prey based on the proportion by number index. Small age-0 tarpon ((le) 100 mm) consumed small crustaceans (copepods) while large age-0 tarpon (> 100 mm) consumed larger crustaceans (shrimp) and age-0 tarpon of all sizes consumed fish. Most tarpon with empty stomachs were collected at temperatures < 25 °C, whereas most tarpon with prey in their stomach were collected at temperatures > 25 °C. The proportion of tarpon having at least one prey item in their stomach contents was greatest around 28 °C and declined at lower and higher water temperatures. Salt marsh habitats in the North Inlet-Winyah Bay estuarine system provide suitable food resources for age-0 tarpon. As water temperatures increase and tropical species, such as tarpon, expand their range, these coastal nursery habitats may become more important for tarpon growth and recruitment to the spawning stock.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"124 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the molecular basis of diapause I induction in the annual killifish Garcialebias charrua: a transcriptomic approach 探索一年生鳉鱼（Garcialebias charrua）休眠 I 诱导的分子基础：转录组学方法

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-06-18 DOI: 10.1007/s10641-024-01562-x

N. G. Papa, J. Sotelo-Silveira, L. Inchausti, C. Valdivieso, L. Pereiro, F. Gajardo, A. Di Genova, A. Glavic, C. Chalar, N. Berois, Miguel L. Allende, Maria Jose Arezo

{"title":"Exploring the molecular basis of diapause I induction in the annual killifish Garcialebias charrua: a transcriptomic approach","authors":"N. G. Papa, J. Sotelo-Silveira, L. Inchausti, C. Valdivieso, L. Pereiro, F. Gajardo, A. Di Genova, A. Glavic, C. Chalar, N. Berois, Miguel L. Allende, Maria Jose Arezo","doi":"10.1007/s10641-024-01562-x","DOIUrl":"https://doi.org/10.1007/s10641-024-01562-x","url":null,"abstract":"One of the most unique examples of adaptation to extreme environments is exemplified by diapauses (I, II and III) in annual killifish embryos. We aimed to understand the molecular mechanisms involved in the regulation of these arrests. In this context, we first comprehensively analysed the expression of genes using a transcriptomic approach to distinguish between two developmental trajectories: diapause induction and non-diapause induction. We focused on the process of diapause I induction by comparing the mRNA profiles at the maternal stage with those of diapause I-induced embryos, non-diapause I-induced embryos and embryos that had exited diapause I. Our analysis revealed approximately seven hundred transcripts that were differentially and exclusively expressed upon the induction of diapause I. The Gene Ontology (GO) categories of the gene-specific transcriptional regulator group, RNA metabolism, cytoskeletal protein and scaffold/adaptor proteins exhibited the highest representation among differentially expressed genes (DEGs) and coexpression analysis. Remarkably, the identification of different homeodomain transcription factors, cell cycle regulators and RNA processing/regulators as DEGs suggests that these regulators play important roles in Garcialebias charrua diapause I induction. Consistent with the results of the DEG analysis, the results of the Clust coexpression analysis revealed 5 and 3 patterns of diapause I-induced gene upregulation and downregulation, corresponding to 3939 and 1250 genes, respectively. Comparative expression analysis of genes and signalling pathways reported to contribute to diapauses in other species revealed that insulin/IGF, vitamin D, Wnt, polycomb and heat shock proteins are also involved in diapause I induction in annual killifish.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"9 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methodological influence on detecting temperature effects on growth variability in juvenile Atlantic salmon 检测温度对大西洋鲑幼鱼生长变化影响的方法学影响

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-05-31 DOI: 10.1007/s10641-024-01558-7

Jean-Michel O. Matte, Guillaume J.R. Dauphin, André St-Hilaire, Carole-Anne Gillis, Normand E. Bergeron, Cindy Breau

{"title":"Methodological influence on detecting temperature effects on growth variability in juvenile Atlantic salmon","authors":"Jean-Michel O. Matte, Guillaume J.R. Dauphin, André St-Hilaire, Carole-Anne Gillis, Normand E. Bergeron, Cindy Breau","doi":"10.1007/s10641-024-01558-7","DOIUrl":"https://doi.org/10.1007/s10641-024-01558-7","url":null,"abstract":"In the context of warming freshwater habitats, protection of Atlantic salmon populations requires an understanding of the effects of temperature on somatic growth during the juvenile life stage. However, quantifying the effect of temperature on growth is challenging given differences among methodologies, metrics of growth, and their underlying assumptions. Using short term studies (2000–2002) in two Canadian populations of wild Atlantic salmon (Margaree and Miramichi rivers), we investigate whether different hierarchical modeling approaches influence the derivation of temperature-growth relationships, by contrasting seasonal growth trajectories (von Bertalanffy; VBGF) to size-at-age data models built with instantaneous growth rates. Size-at-age data analysed seasonally with the VBGF framework failed to detect an effect of temperature, whereas instantaneous growth rates from the same dataset were strongly related to temperature metrics. However, instantaneous growth rates cannot be used to extrapolate predictions into meaningful metrics for fisheries management (e.g., size at the end of the growing season). Nevertheless, we show that size at the end of the growing season can be predicted with VBGF models accounting for site-level variation, which in turn are related to temperature metrics, as observed for instantaneous growth rates. Taken together, these results show that combining these two approaches (size-at-age, growth rates) can circumvent their intrinsic drawbacks and reveal essential ecological patterns that may otherwise remain undetected. In cases where instantaneous growth rates are not available, relating predicted size-at-age from hierarchical VBGF to temperature provides an interesting alternative for detecting subtle environmental effects, even if the VBGF parameters or its residuals are unrelated to temperature metrics.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"42 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Whitish film covering a newborn white shark was not intrauterine material but embryonic epithelium 覆盖在新生白鲨身上的白色薄膜不是宫内物质，而是胚胎上皮

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-05-28 DOI: 10.1007/s10641-024-01560-z

Taketeru Tomita, Kei Miyamoto, Masaru Nakamura, Kiyomi Murakumo, Minoru Toda, Keiichi Sato

{"title":"Whitish film covering a newborn white shark was not intrauterine material but embryonic epithelium","authors":"Taketeru Tomita, Kei Miyamoto, Masaru Nakamura, Kiyomi Murakumo, Minoru Toda, Keiichi Sato","doi":"10.1007/s10641-024-01560-z","DOIUrl":"https://doi.org/10.1007/s10641-024-01560-z","url":null,"abstract":"We provide an alternative interpretation for the “whitish film” that covered the young white shark observed with an aerial drone in a paper published recently (Gauna and Sternes, Environ Biol Fish 107:249–254, 2024). The paper claimed that this whitish film was a leftover intrauterine substance (e.g., uterine milk, which is a maternal secretion to nourish embryos), thus suggesting that the individual was a newborn. However, we are skeptical of this interpretation for the following reasons: (1) our previous studies showed that the secretion of intrauterine substances in white sharks ceases in mid-gestation and, (2) even if the secretion continues until birth, the substance is unlikely to be retained on the skin for a long time after birth. Based on data from Lamna ditropis, a close relative of the white shark, we hypothesize that the whitish film is an embryonic epithelium that covers the surface of skin denticles. This reinterpretation does not alter but reinforces the major conclusion of (Gauna and Sternes, Environ Biol Fish 107:249–254, 2024) that the individual sighted is a newborn.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"58 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141168475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of plasticity and genetic divergence in phenotypic trait expression of sulfide spring fishes 硫化泉鱼类表型性状表达的可塑性和遗传差异的影响

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-05-28 DOI: 10.1007/s10641-024-01555-w

Madison Nobrega, Ryan Greenway, Courtney N. Passow, Lenin Arias Rodriguez, Michael Tobler

{"title":"Effects of plasticity and genetic divergence in phenotypic trait expression of sulfide spring fishes","authors":"Madison Nobrega, Ryan Greenway, Courtney N. Passow, Lenin Arias Rodriguez, Michael Tobler","doi":"10.1007/s10641-024-01555-w","DOIUrl":"https://doi.org/10.1007/s10641-024-01555-w","url":null,"abstract":"Natural environments vary, and organisms cope with this variation in two general ways: local adaptation and phenotypic plasticity, although these strategies often overlap and interact. This study explored how local adaptation, phenotypic plasticity, and their interactions shaped phenotypic variation in populations of Poecilia mexicana, an extremophile fish living in adjacent but ecologically divergent habitats. By comparing populations from the wild with fish raised in a common-garden environment, we evaluated how genetic differentiation between populations and plasticity contributed to the phenotypic variation observed in nature. We quantified variation in the size of six organs (brain, eyes, gills, heart, liver, and gastrointestinal tract), routine metabolic rate, and body shape. We found evidence for genetic differences between populations impacting the expression of the majority of traits, in addition to or in interaction with phenotypic plasticity and other predictor variables. Overall, our results suggest that trait divergence between populations was at least in part driven by evolutionary change and not just merely by plasticity induced by environmental differences between habitats. Future studies will have to rigorously test whether evolutionary divergence was caused by natural selection and what traits represent adaptations to the different ecological conditions.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"17 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141168220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An experimental study of benthic habitat selection in yellow-phase American eels (Anguilla rostrata) 黄相美洲鳗鲡底栖栖息地选择实验研究

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-05-14 DOI: 10.1007/s10641-024-01544-z

Melissa A. Braham, Stuart A. Welsh, Dustin M. Smith

{"title":"An experimental study of benthic habitat selection in yellow-phase American eels (Anguilla rostrata)","authors":"Melissa A. Braham, Stuart A. Welsh, Dustin M. Smith","doi":"10.1007/s10641-024-01544-z","DOIUrl":"https://doi.org/10.1007/s10641-024-01544-z","url":null,"abstract":"In a laboratory experiment, we quantified microhabitat use of small yellow-phase American eels (Anguilla rostrata, n = 130, 224–338 mm TL) conditional on five benthic substrate types common to rivers within their geographic range. During nine, 4-day trials replicated with three aquaria, American eels were given a choice to burrow into five equally available benthic substrates: cobble (90–256 mm), gravel (4–16 mm), sand (0.125–1 mm), silt/clay (< 0.0625 mm), and leaf pack. Five American eels were used per aquarium for each trial, and individuals were used one time only. All eels were injected with PIT tags prior to the study, which allowed for determination of lengths and otolith-based ages of each individual following each trial. Leaf pack was selected with a significantly higher probability than other substrates (63 of 130 individuals). However, other substrates were also used (cobble, 21 of 130; silt/clay, 18 of 130; gravel, 16 of 130; and sand, 12 of 130). Length and age covariates were not associated with substrate selection. Selection of leaf pack habitat supports the importance of forested riparian zones and terrestrial organic material to yellow-phase American eels in riverine systems.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"19 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140928737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0