BMC Zoology最新文献

{"title":"From traumatic oral fibroma to fatal pneumonia: a multidisciplinary postmortem investigation in a long-term monitored Indo-Pacific bottlenose dolphin (Tursiops aduncus).","authors":"Ji-Hyung Park, Kyung Lee Lee, Young Min Lee, Ji Yeong Choi, Yu Ri Heo, Seung Mok Oh, Dasom Lee, Sunmin Kim, Heon Woo Lee, Cherry Tsz Ching Poon, Won Hee Hong, Hyo-Bang Moon, Sori Mok, Chung-Young Lee, Min-Ah Kim, Adams Hei Long Yuen, Seung Hyeok Seok, Byung Yeop Kim, Sang Wha Kim","doi":"10.1186/s40850-026-00277-z","DOIUrl":"10.1186/s40850-026-00277-z","url":null,"abstract":"<p><strong>Background: </strong>An Indo-Pacific bottlenose dolphin (Tursiops aduncus) in the coastal waters of Jeju Island, Republic of Korea, exhibited an oral mass and mandibular deformity over a documented 6-year period, including 3 years of intensive longitudinal monitoring by our research team. A multidisciplinary approach combining imaging, pathology, microbiology, and omics analyses was used to assess the dolphin.</p><p><strong>Results: </strong>Post-mortem computed tomography confirmed a mandibular fracture at the oral mass site. Histopathological examination of the oral mass revealed prominent fibroblast proliferation and collagen deposition. Fibropapillomas and desmoid tumors were excluded based on viral detection assays and β-catenin accumulation analysis, supporting a diagnosis of trauma-induced fibroma. Transcriptomic analysis of the tumor tissues identified highly expressed genes associated with extracellular matrix remodeling, myofibroblast activation, and epithelial differentiation, supporting a reactive fibrotic rather than malignant phenotype. Gross necropsy revealed multiple suppurative pulmonary lesions, abundant foamy fluid within the respiratory tract, and diatoms within the pulmonary tissue. Metagenomic sequencing revealed a polymicrobial infection, with Parvimonas micra as the predominant organism. Collectively, these findings are most consistent with aspiration pneumonia, with severe secondary pulmonary infection considered a major contributor to death. In addition, analysis of halogenated organic contaminants revealed accumulation levels consistent with those typically observed in aged individuals, and no evidence was identified indicating a direct causal role in the terminal disease process.</p><p><strong>Conclusions: </strong>To the best of our knowledge, this is the first study to characterize the pathological features and proposed pathogenic mechanism of traumatic fibroma in a marine mammal, and the first confirmed case of pulmonary abscessation associated with Parvimonas micra infection in this taxonomic group. Overall, these findings provide valuable baseline data for the health monitoring and conservation of marine mammal populations.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13576125/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148340625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic resonance imaging of ovaries in the mud crab Scylla paramamosain during vitellogenesis.","authors":"Chaoyang Huang, Zijun Deng, Quantai Wu, Pengfei Zou, Xianyuan Zeng, Yilei Wang","doi":"10.1186/s40850-026-00274-2","DOIUrl":"10.1186/s40850-026-00274-2","url":null,"abstract":"<p><strong>Background: </strong>Ovarian assessment and monitoring are crucial for reproductive management and breeding programs in animal production. Currently, there is a lack of quantitative and non-invasive methods for ovarian assessment and monitoring in crab species. In the present study, magnetic resonance imaging (MRI) was utilized to characterize the ovarian morphology of mud crabs during vitellogenesis.</p><p><strong>Results: </strong>The ovaries exhibited low signal intensity in T2-weighted magnetic resonance images and displayed intermediate signal intensity in T1-weighted magnetic resonance images. The ovarian shape varied topologically among different cross-sectional images and changed considerably across different developmental stages. From the early to late stages, the ovaries increased in size, as determined by MRI measurements at the eyes in the sagittal plane and at the commissure of the ovaries, heart, and flank in the transverse plane, which were positively correlated with values of the gonadosomatic index (GSI). The GSI was well-plotted against MRI measurements using two-variable linear regression. Among them, five regression models appeared promising for estimating GSI values in ovarian assessment of live mud crabs. The growth of the ovaries was documented in three mud crabs through repeated MRI scans, suggesting that this non-invasive method could be employed for longitudinal monitoring.</p><p><strong>Conclusions: </strong>Our findings demonstrate the application of MRI for ovarian assessment and monitoring in mud crabs, providing new insights into assisted reproductive technology in decapods.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13543499/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148320058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying movements and home ranges of an estuarine turtle: the effects of urbanization and boundaries.","authors":"Karissa Hough, Matthew Sclafani, Russell Burke","doi":"10.1186/s40850-026-00273-3","DOIUrl":"10.1186/s40850-026-00273-3","url":null,"abstract":"<p><strong>Background: </strong>Tracking small-bodied animals in estuarine environments entails significant technological and analytical challenges. Diamond-backed terrapins are small (max 1.4 kg) turtles that inhabit salt marshes of the eastern U.S. and the Gulf of Mexico. Terrapin movements have been studied with VHF radio telemetry, acoustic telemetry, and mark and recapture methods, which have indicated maximum straight-line movement distances < 10 km and mean home ranges < 1 km².</p><p><strong>Results: </strong>We deployed 21 Argos satellite tags on adult female terrapins at two sites on Long Island, New York to better understand the spatial ecology of this imperiled species, and to test newly available tracking technology. We processed the location data three ways: (1) we used a location data filter to remove unlikely terrestrial and oceanic locations and applied a state-space model to account for Argos location errors, (2) we applied the state-space model to unfiltered data to determine the effects of not removing unlikely locations, and (3) we used only the highest quality location class 3 (LC 3) locations. We used the data resulting from each of these approaches to calculate four different movement metrics: summer home range size (95% minimum convex polygons (MCPs) and kernel density estimates (50% and 95% KDE, with both reference [href] and least squares cross validation [LSCV] bandwidths)), the total distance traveled from June to August, maximum distance traveled in one day, and daily movement rates. Home ranges estimated from the three processing techniques were similar in size and covered the same spatial areas. Estimates for total distance traveled, daily movement rates, and maximum distance traveled were similar between the state-space modeling techniques, but LC 3 estimated distances were twice as long. Movement metrics and home ranges were similar between the two study sites, despite differences in urbanization and bay size.</p><p><strong>Conclusions: </strong>These results suggest that most movement metrics and home range estimates are fairly insensitive to these different analytical techniques, even at relatively smaller spatial scales. Additionally, our study indicates substantially larger home ranges and longer straight-line movements than VHF telemetry or sonic tag studies, highlighting the utility of satellite tags to improve our understanding of terrapin ecology and conservation.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13520177/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148273419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phytoplasma infection induces changes in vibrational signals of Cacopsylla pyri: sex-specific shifts in frequency, amplitude, and timing.","authors":"Christina Koller, Ciara Hellweger, Andreas Jürgens, Jürgen Gross","doi":"10.1186/s40850-026-00270-6","DOIUrl":"10.1186/s40850-026-00270-6","url":null,"abstract":"<p><p>The pear psyllid (Cacopsylla pyri), the main vector of 'Candidatus Phytoplasma pyri', relies on substrate-borne vibrational signals for mate recognition and duet coordination. As pathogens can alter insect communication, we examined whether phytoplasma infection alters key parameters of male and female mating signals. We used laser vibrometry on a standardised artificial substrate, as well as playbacks, to examine this. We detected sex-specific differences in individual signal parameters. In males, infection significantly reduced the amplitude of chirps, whereas uninfected males showed a markedly higher number of interruptions within their trill units. Infected females produced longer inter-chirp intervals and showed higher dominant spectral components than uninfected females. However, fundamental frequency remained stable across treatments, suggesting that differences in dominant frequency reflect shifts in spectral energy among harmonics rather than changes in the primary oscillation frequency. These infection-induced changes may reflect physiological constraints affecting vibrational mechanics. These findings suggest that infection-related differences in dominant frequency reflect changes in the distribution of spectral energy among harmonics rather than a change in the fundamental frequency. Despite these differences at the individual level, the preliminary results of duet communication between males and females did not differ significantly across the various infection treatments. This suggests that the basic coordination in the duet may not be significantly impaired under laboratory conditions; this should be investigated more closely in a specially designed experiment.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13227762/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148144861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case of successful brood parasitism by Mandarin Duck (Aix galericulata) on Scaly-sided Merganser (Mergus squamatus).","authors":"Shu Liu, Donghong Li, Shiyu Zhang, Guodong Yi, Yongbin Zhao","doi":"10.1186/s40850-026-00271-5","DOIUrl":"10.1186/s40850-026-00271-5","url":null,"abstract":"<p><p>Brood parasitism is a significant reproductive strategy among birds. Both the Scaly-sided Merganser (Mergus squamatus) and the Mandarin Duck (Aix galericulata) are tree-cavity-nesting waterbirds with overlapping ecological niches. Although field observations have previously suggested that Mandarin Ducks may parasitize the nests of Scaly-sided Mergansers, direct evidence of successful hatching of parasitic eggs has been lacking. During the 2024 breeding season in the Manjiang region of Changbai Mountain, Jilin Province, field monitoring documented a case where a Mandarin Duck laid an egg in an artificial nest box intended for Scaly-sided Mergansers. Using eggshell membranes collected after hatching, we performed species identification for all ducklings based on the mitochondrial 12S rRNA gene as a genetic marker. Combined with morphological observations, we confirmed that one duckling was a Mandarin Duck, while the rest were Scaly-sided Mergansers. Analyses of the mitochondrial D-loop region and eight microsatellite loci indicated that all Scaly-sided Merganser ducklings were full-sibling offspring from the same parental pair. This supports the genetic monogamy in this nest and the absence of intraspecific brood parasitism in this instance. Our study provides molecular-level evidence for a case of successful interspecific brood parasitism by a Mandarin Duck on a Scaly-sided Merganser, enriching our understanding of interspecific interactions among tree-cavity-nesting birds. The findings also offer insights for the conservation of endangered species like the Scaly-sided Merganser. Furthermore, we identified a sequence discrepancy in the Scaly-sided Merganser's 12S rRNA compared to existing reference sequences, suggesting a need for re-sequencing its mitochondrial genome.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13277120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148044249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From scat to seedling: seasonal variation in seed deposition and emergence by chacma baboons (Papio ursinus) in a semi-arid South African savanna.","authors":"Mpoko Belly Malatji, Sellina Ennie Nkosi","doi":"10.1186/s40850-026-00267-1","DOIUrl":"10.1186/s40850-026-00267-1","url":null,"abstract":"<p><p>Seed dispersal by primates is a key ecological process, yet research remains comparatively limited in semi-arid savannas. This study investigates the seasonal variation in scat-derived seed deposition and emergence patterns of chacma baboons (Papio ursinus) and their potential role as seed dispersers in Suikerbosrand Nature Reserve, South Africa. Across wet and dry seasons, 240 scats (120 per season) were collected over a 12-month period (May 2012-April 2013). A total of 23,132 seeds, representing 22 plant seed taxa, were recovered from faecal samples. Seed count per scat and taxon representation were higher in the dry season, indicating seasonal differences in ingested resources. Fruits dominated the diet in both seasons, while leaves, grasses, pods and invertebrates contributed more in the wet season. Greenhouse trials recorded seedling emergence from seven taxa in the dry season and five in the wet season. Emergence was dominated by herbaceous forbs, particularly Oxalis corniculata and Chamaesyce prostrata. These results indicate potential for emergence rather than direct germination success or gut-passage effects. By linking seed deposition and emergence, this study provides a process-based assessment of baboon-mediated seed dispersal. Results are interpreted as patterns of seed deposition rather than resource selection. These findings highlight baboons as ecologically relevant seed dispersers and support their role in savanna regeneration processes.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13244965/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148007088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochemical and Hsp70 gene expression changes in Apis mellifera workers following water and food deprivation.","authors":"Amr M A Mohamed, Eslam M Omar, Ebrahim M E Alhousini","doi":"10.1186/s40850-026-00265-3","DOIUrl":"10.1186/s40850-026-00265-3","url":null,"abstract":"<p><strong>Background: </strong>Resource scarcity poses a real challenge to living organisms. The present study aimed to understand the implications of water and food lack on some biochemical markers. The study also aimed to investigate the expression of Hsp70 gene under the same stress conditions. The Hsp70 gene maintains cellular proteostasis. It is unique in its high sensitivity and rapid response to various stress factors compared to other Hsps.</p><p><strong>Methods: </strong>Brood frames of Carniolan hybrid bees were incubated at 30 °C and 70% RH. Emerged bees were placed in plastic cages (30 individuals per cage) and received daily diets of pollen-sugar pastes and sugar solutions. After nine days, bees were independently subjected to dehydration and starvation experiments for 24 h. One group was deprived of only sugar solutions (Dehydrated DH), another group was denied both sugar solutions and pollen pastes, receiving only tap water (Starved ST), while a third group continued without water or food deprivation (Control C). Bee samples were collected at 12-hour intervals in each experiment for subsequent investigations. Biochemical measurements were performed on total protein, total antioxidant capacity, peroxidase, catalase, glutathione S-transferase, and acid phosphatase. Gene expression of Hsp70 gene was under observation. Bee weights were also considered.</p><p><strong>Results: </strong>Both dehydrated and starved bees showed notable changes in their examined biomarkers. Starvation had a more pronounced and rapid biochemical effect. The decreases in Hsp70 mRNA levels following water or food deprivation were surprising to us and reflect the severity of these two stressors. Other differences were also recorded in the weights of dehydrated and starved bees.</p><p><strong>Conclusions: </strong>This study reveals honeybees' extreme sensitivity to nutritional stress and warns against depriving them of water or food for even a few hours.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":"11 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13169560/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147934826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of avian biodiversity and community similarity between Nansihu wetland and the Yellow River Delta wetland across different seasons.","authors":"Yuewei Yang, Xingjia Zheng, Lingyue Lv, Fengfei Sun, Wei He, Yi Li","doi":"10.1186/s40850-026-00268-0","DOIUrl":"10.1186/s40850-026-00268-0","url":null,"abstract":"<p><p>Birds are widely recognized as important bioindicators, particularly in wetland ecosystems that support high biodiversity. This study investigated the structure and seasonal dynamics of bird communities in the Nansi Lake wetland and the Yellow River Delta wetland in Shandong Province, China. Bird surveys were conducted using the point count method, and species diversity, richness, evenness, and abundance were analyzed. A total of 220 bird species (347,599 individuals) were recorded across the two wetlands. The results revealed clear differences in community structure between the wetlands, with the Yellow River Delta consistently supporting higher species diversity, particularly in spring and summer, while the Nansi Lake wetland exhibited lower diversity during autumn and winter. Seasonal variation significantly influenced bird abundance and community composition, with stronger differences between the wetlands observed during the wet season. In addition, species similarity was generally higher in the Yellow River Delta wetland, indicating a more stable community structure across seasons. These findings suggest that habitat characteristics and seasonal environmental changes jointly shape bird community dynamics in coastal and inland wetlands. Overall, this study highlights the importance of seasonal processes in structuring wetland bird communities and provides a scientific basis for the conservation and management of wetland-dependent bird species in eastern China.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13227624/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147934781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing mating strategies to maximize genetic diversity in the mhorr gazelle (Nanger dama mhorr) ex situ breeding program.","authors":"Sonia Domínguez, Juan Pablo Gutiérrez, Eulalia Moreno, Isabel Cervantes","doi":"10.1186/s40850-026-00264-4","DOIUrl":"10.1186/s40850-026-00264-4","url":null,"abstract":"<p><p>To minimize coancestry among the offspring by equalising parents' contributions is currently one of the most widely used methods to maximize the genetic diversity in conservation programs of threatened species. The objective of this study was to compare the performance of 22 different mating strategies to limit the loss of genetic diversity in a real captive population of mhorr gazelle (Nanger dama mhorr) via computer simulations. This objective was achieved by monitoring the evolution of the effective population size (Ne) throughout 15 generations. The studied population consisted of 87 breeding animals (25 males and 62 females), from a total pedigree of 3059 records. The scenarios were designed according to different assumptions: the use of parents coancestry or offspring coancestry, the use of the coefficients themselves in calculations or their increases, and the number of males and females involved in the mating. The results for this captive population showed that strategies to minimize the parent's coancestry were the best in the short term, but mixed strategies to minimize coancestry of both parents and offspring were better in the medium and long term when a weight to coancestry in the parents' generation between 5% and 50% was applied. Furthermore, it was observed that these mixed strategies improved their performance when all females in the population participated in breeding, but not all males. These results suggest that each managed population may need different mating strategies, considering its generation interval, the species' breeding system, the expected time horizon of the conservation program, or other species-specific considerations of the population.</p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13154453/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147786400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recreational fisheries as indicators of change: species range shifts from MRIP (1981-2024).","authors":"Rachel E Roday, Rileigh E Hudock, Daniel R Millea, Aaron B Carlisle, Edward A Hale","doi":"10.1186/s40850-026-00266-2","DOIUrl":"10.1186/s40850-026-00266-2","url":null,"abstract":"<p><p>BACKGROUND: In response to global climate change, many marine fish species are shifting their distributions poleward and into deeper, cooler, and more oxygenated waters. Most studies examining this phenomenon rely on fishery-independent surveys with randomized sampling strata or fishery-dependent data from commercial fisheries. However, stock assessments in the United States also incorporate marine recreational data provided by NOAA’s Marine Recreational Information Program (MRIP), an intercept survey that collects data dockside and by phone to estimate fishing effort and landings. In this study, we analyze MRIP data as well as more conventional fishery-independent survey methods from 1981 to 2024 by quantifying range and latitudinal distribution shifts in four marine species (Black sea bass Centropristis striata, summer flounder Paralichthys dentatus, winter flounder Pseudopleuronectes americanus, and scup Stenotomus chrysops). These species are either structure-associated and difficult to sample with traditional methods, underrepresented in standardized trawl surveys, or lack a significant commercial fishery in the U.S. RESULTS: We detected significant latitudinal distribution shifts in black sea bass and summer flounder from 1981 to 2024, particularly in the fall season, with both species exhibiting strong poleward movement in MRIP-derived center of distribution (COD) estimates. These trends were corroborated by NOAA trawl survey data via the DisMAP tool. Black sea bass also showed moderate range expansion, while summer flounder exhibited range contraction. Scup displayed moderate range expansion in MRIP data but weak or non-significant COD shifts in both MRIP and DisMAP. Winter flounder showed consistent range contraction in MRIP but little movement in COD. While broad alignment was observed between MRIP and DisMAP patterns for black sea bass and summer flounder, discrepancies in scup and winter flounder trends highlight the complementary strengths and limitations of each dataset. CONCLUSIONS: We propose that MRIP data can complement existing survey frameworks, particularly for species not well captured by conventional methods. Finally, we recommend future research investigate the responsiveness of different datasets in detecting early signals of shifting stocks. </p>","PeriodicalId":48590,"journal":{"name":"BMC Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13169931/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147786363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}