Marine Biology最新文献_第9页

Foraging areas of Orlog’s gulls in an estuarine ecosystem of Argentina: are they underprotected? 阿根廷河口生态系统中奥罗格海鸥的觅食区：它们是否未受到足够保护？

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-15 DOI: 10.1007/s00227-024-04404-7

Pablo Petracci, Nicolás Caruso, Luciano F. La Sala, Leandro Marbán, Martín Sotelo, Martín Carrizo, Rodolfo Sarria

{"title":"Foraging areas of Orlog’s gulls in an estuarine ecosystem of Argentina: are they underprotected?","authors":"Pablo Petracci, Nicolás Caruso, Luciano F. La Sala, Leandro Marbán, Martín Sotelo, Martín Carrizo, Rodolfo Sarria","doi":"10.1007/s00227-024-04404-7","DOIUrl":"https://doi.org/10.1007/s00227-024-04404-7","url":null,"abstract":"Worldwide, seabird populations are facing significant declines due to various threats, making them valuable bioindicators of marine ecosystem changes. Understanding their foraging behavior and identifying crucial foraging areas (FAs) is essential for their conservation. In this study, the focus was on Olrog’s gull (Larus atlanticus), a near-threatened species endemic to the Atlantic coast of Argentina, Uruguay, and southern Brazil. The objectives were to assess the distribution of FAs and home ranges of Olrog’s gull and to evaluate the overlap between FAs and protected areas (PAs) in the Bahía Blanca Estuary (BBE), Argentina. Global positioning system (GPS) tracking and dynamic Brownian bridge movement models (dBBMM) were used to analyze Olrog’s gull behavior during their breeding season. The results revealed well-defined FAs, with 72% of them located outside PAs, raising concerns about potential threats to the species. Sex-related differences were observed, with females covering longer distances during foraging flights. In addition, several FAs were located near industrial sites, posing health risks due to pollution. This study contributes novel insights into Olrog’s gull foraging ecology, particularly in the most critical breeding area for the species. A dynamic web application was developed to provide rapid access to comprehensive information applicable to conservation actions. These findings underscore the need for enhanced protection of critical FAs, particularly those lying outside currently PAs.This research emphasizes the importance of well-informed policy decisions to enhance ongoing conservation initiatives for Olrog’s gull populations and their habitats, particularly in the face of increasing threats posed by human activities.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"40 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140154061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hold it close: male octopus hold their hectocotylus closer to their body 紧紧抱住：雄性章鱼将ctocotylus紧紧抱住身体

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-14 DOI: 10.1007/s00227-024-04398-2

Willem Lee Weertman, David Scheel

{"title":"Hold it close: male octopus hold their hectocotylus closer to their body","authors":"Willem Lee Weertman, David Scheel","doi":"10.1007/s00227-024-04398-2","DOIUrl":"https://doi.org/10.1007/s00227-024-04398-2","url":null,"abstract":"The right third arm of the male octopus is the hectocotylized arm. This arm is modified by anatomy specialized to hold and transfer sperm packets to the female, and lacks suckers at the distal end. Male octopus may be distinguished by the skilled eye from their habit of holding their hectocotylus closer to their body in a protective manner, although this observation has never been described quantitatively. We utilized a three-step process of data annotation, pose estimation model training, and model inference to show that this common observation is true of Octopus rubescens. In 2338 images, the eyes, mantle tip, and arm tips of two male (n = 1152) and three female (n = 1085) octopuses were annotated by an experimenter. These images were then used to train a DeepLabCut pose estimation model which achieved a RMSE of 1.78 cm. This model was then used to annotate 11.4 h (n = 408,985 images) of four female and eight male octopuses moving across the middle of a large aquarium. We then compared the human annotated data, and the model inference data separately. In both datasets we compared the arm-tip-to-eye centered point distances, as well as the octopus centric arm tip 90% kernel density estimation area. In both the training dataset and the model inference datasets we found common results. Male O. rubescens hold their third to the right arm closer to their body than all seven other arms while the females do not. Further, in both males and females, the rear arm pairs operate closer to the body than the front arm pairs. Despite their anatomical similarity and potential redundancy, these results indicates functional differences in arm use by octopuses.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"44 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shifting thermal tolerance windows throughout incubation affects sea turtle hatching success: implications for hatchery management and conservation 在整个孵化过程中改变热耐受窗口会影响海龟孵化成功率：对孵化场管理和保护的影响

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-13 DOI: 10.1007/s00227-024-04417-2

{"title":"Shifting thermal tolerance windows throughout incubation affects sea turtle hatching success: implications for hatchery management and conservation","authors":"","doi":"10.1007/s00227-024-04417-2","DOIUrl":"https://doi.org/10.1007/s00227-024-04417-2","url":null,"abstract":"<h3>Abstract</h3> Thermal conditions in the nest affect the development of sea turtle clutches, with high temperatures potentially reducing reproductive success and the quality of hatchlings. In a warming climate, increasing temperatures could become a threat to sea turtles in many locations. This has prompted the implementation or recommendation of climate mitigation strategies in nests that incubate in hatchery conditions. Here, olive ridley turtle (Lepidochelys olivacea) clutches relocated to a beach hatchery in Playa Grande, Costa Rica (10° 20 N, 85° 51 W) were used to study the effect of temperature on hatching success and hatchling size. Data from 5 nesting seasons (2017/18 to 2022/23, excluding 2020/21) were tested to determine the effect of mean incubation temperature by thirds of development, as well as over the whole incubation period. Hatching success was lower at low and high temperatures and higher at intermediate ones during the second and last thirds of development. Optimal mean temperature ranges were 29–32 °C and 32–35 °C across the second and last thirds of development respectively, and 30–32.5 °C during the whole incubation period. There was no statistically significant effect of temperature on hatching success during the first third of development. High temperature resulted in shorter carapace width but did not statistically affect mass or carapace length. The temperature effect on carapace width occurred in all thirds of development. Studying temperature effects on target species nests at the local level, throughout incubation, and over multiple years is important for applying climate mitigation strategies properly.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"135 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Functioning of a canopy-dominated intertidal community during emersion: highly productive but heterotrophic at the annual scale 以树冠为主的潮间带群落在萌发期间的功能：年尺度上高产但异养

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-13 DOI: 10.1007/s00227-024-04395-5

Claire Golléty, Jon Yearsley, Aline Migné, Dominique Davoult

{"title":"Functioning of a canopy-dominated intertidal community during emersion: highly productive but heterotrophic at the annual scale","authors":"Claire Golléty, Jon Yearsley, Aline Migné, Dominique Davoult","doi":"10.1007/s00227-024-04395-5","DOIUrl":"https://doi.org/10.1007/s00227-024-04395-5","url":null,"abstract":"In order to address lack of data regarding coastal carbon budgets, we estimated the annual metabolic carbon budget of an intertidal rocky reef macroalgal community during emersion. This budget is based on direct in situ measurements during emersion and establishes the seasonal variations of the photosynthetic parameters of such a community. CO2 fluxes were measured hourly to study the response of community gross primary productivity (GPP) to irradiance and the variation of GPP and community respiration (CR) over the emersion period at different times of the year. These were combined together with existing monthly measures of GPP and CR hourly rates to model the variations of these fluxes as a function of irradiance and the tidal cycle throughout an entire calendar year. Daily, monthly and annual values of GPP, CR and net primary productivity (NPP) were calculated with a relatively low sensitivity to any of the parameters used. While GPP fluxes show comparable orders of magnitude to those measured in other systems, higher CR fluxes lead to a heterotrophic system during emersion, both under measured (NPP = −299 gC m−2 year−1) and theoretical irradiances (NPP = −119 gC m−2 year−1). This heterotrophy is directly linked to the light availability, varying according to combined daily, tidal and seasonal cycles, and to temperature at the seasonal scale. Measurements performed in situ at the community scale integrated interactions that are otherwise absent at the individual scale. This gives access to aspects of the functioning that cannot be otherwise identified.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"109 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling loggerhead turtles size decline at a major Brazilian nesting ground 揭开巴西一个主要筑巢地蠵龟体型下降的神秘面纱

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-12 DOI: 10.1007/s00227-024-04408-3

{"title":"Unveiling loggerhead turtles size decline at a major Brazilian nesting ground","authors":"","doi":"10.1007/s00227-024-04408-3","DOIUrl":"https://doi.org/10.1007/s00227-024-04408-3","url":null,"abstract":"<h3>Abstract</h3> Brazil’s second-largest reproductive colony of loggerhead turtles (Caretta caretta) has a long history of overexploitation, with its temporal ecological dynamics still unknown. This study investigates changes in the average size of females and post-maturity somatic growth rates in marked and recaptured loggerhead turtles at a breeding site over a 33-year period (1982–2014). Loggerhead curved carapace length (CCL) was evaluated over the course of the study using a generalized additive model (GAM) with a Gaussian family distribution and time smoothed. Includes the nesting year and the CCL for a total of 2.359 female loggerhead turtles. The overall average length of females was 99.4 cm ± 5.8 (mean ± SD). The results suggest that the CCL of females in the nesting area is decreasing. From 1982 to 1998, the mean CCL was 102.6 cm; from 1999 to 2014, the average length was 98.7 cm. There were no statistically significant differences in post-maturity growth rates among recaptured females, supporting the hypothesis of increased recruitment. The GAM results showed significant differences in the size structure changes of reproductive site females over time. The study highlights how a population parameter can be influenced by long-term conservation of feeding and nesting areas for sea turtles, resulting in a higher number of recruits. The curved carapace length serves as an important metric to describe population changes and raise awareness about future conservation challenges.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"3 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Small-scale movements and site fidelity of two sympatric sea turtle species at a remote atoll 两个同域海龟物种在偏远环礁的小规模移动和地点忠诚度

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-08 DOI: 10.1007/s00227-024-04414-5

Cheryl L. Sanchez, Nancy Bunbury, Jeanne A. Mortimer, Luke A’Bear, Jennifer Appoo, Michael Betts, Rainer von Brandis, Lorraine Cook, Janske van de Crommenacker, Jock C. Currie, Naomi Doak, Frauke Fleischer-Dogley, Terrence Mahoune, Emma Mederic, Bruno Mels, Pierre Pistorius, Heather Richards, Uzice Samedi, Paolo Casale

{"title":"Small-scale movements and site fidelity of two sympatric sea turtle species at a remote atoll","authors":"Cheryl L. Sanchez, Nancy Bunbury, Jeanne A. Mortimer, Luke A’Bear, Jennifer Appoo, Michael Betts, Rainer von Brandis, Lorraine Cook, Janske van de Crommenacker, Jock C. Currie, Naomi Doak, Frauke Fleischer-Dogley, Terrence Mahoune, Emma Mederic, Bruno Mels, Pierre Pistorius, Heather Richards, Uzice Samedi, Paolo Casale","doi":"10.1007/s00227-024-04414-5","DOIUrl":"https://doi.org/10.1007/s00227-024-04414-5","url":null,"abstract":"Understanding natural movement patterns and ecological roles of marine megafauna is a research priority best studied in areas with minimal human impact. The spatial distribution patterns specifically for immature turtles at foraging grounds have been highlighted as a research gap for effective management and conservation strategies for sea turtle populations. Capture–mark–recapture (CMR) records (n = 2287) of 1672 immature green (Chelonia mydas) (n = 1158) and hawksbill turtles (Eretmochelys imbricata) (n = 514) from a long-term (1981–2021) in-water CMR program at Aldabra Atoll, Seychelles, were analyzed for 10 sites (0.35–25 km apart). Site fidelity was not correlated with either season or turtle size. Green turtles had lower site fidelity than hawksbill turtles. Green turtles showed avoidance (i.e., opposite of fidelity) of three sites, while hawksbill turtles displayed high fidelity to two sites. Sites displaying non-random behavior (avoidance and/or fidelity) did not share the same benthic habitat types. Results indicate that fidelity can be detected at a fine scale with CMR, but that further exploration into the habitat characteristics of the sites and the ecological roles of both species at the atoll is needed.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"20 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discovering new living Pinna nobilis populations in the Sea of Marmara 在马尔马拉海发现新的 Pinna nobilis 活体种群

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-08 DOI: 10.1007/s00227-024-04416-3

Uğur Karadurmuş, Tacan Benli, Mustafa Sarı

{"title":"Discovering new living Pinna nobilis populations in the Sea of Marmara","authors":"Uğur Karadurmuş, Tacan Benli, Mustafa Sarı","doi":"10.1007/s00227-024-04416-3","DOIUrl":"https://doi.org/10.1007/s00227-024-04416-3","url":null,"abstract":"Fan mussel (Pinna nobilis) is one of the largest bivalve species in the Mediterranean Sea. The situation of the species is critical as it faces widespread mass mortality attributed to pathogens in various parts of the Mediterranean Sea. The Sea of Marmara (SoM) offers a unique environment for fan mussel populations, with some areas hosting alive populations. This study aims to explore and describe new P. nobilis populations in the SoM that are known to be not affected by mortality. An area of 28,200 m2 at 47 stations along the 105 km coastline in the southern part of the SoM was explored using underwater visual transects. A total of 544 alive fan mussels were recorded during the underwater surveys, ranging in total shell height from 11.8 to 31.4 cm. The mean density was estimated as 5.3 ind 100 m−2 although maxima of 18.8 ind 100 m−2 were recorded in some stations. These density hotspots were distributed from the shoreline to a 10 m depth range and 100 m distance from the shoreline in sandy and seagrass meadow habitats. The presence of juveniles provided evidence of successful recruitment. The distribution pattern and recorded mortalities were attributed to hydrodynamic factors and intense human activities. Potential environmental factors (low salinity and temperature) in the SoM may control or delay the possible spread of the lethal pathogens. Favorable conditions result in mussels’ resilience and survival mechanisms. The SoM offer a promising larval reservoir for the recolonization of affected areas, such as those found in the Aegean Sea, through larval exportation.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"66 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140076651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Age and growth analysis of Loliginidae squid paralarvae in the NW Spanish coast using statolith increment counts 利用统计石增量计数法分析西班牙西北部海岸鱿科副鱿鱼的年龄和生长情况

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-07 DOI: 10.1007/s00227-023-04379-x

Elsa García-Mayoral, Álvaro Roura, Graham J. Pierce, Ángel F. González

{"title":"Age and growth analysis of Loliginidae squid paralarvae in the NW Spanish coast using statolith increment counts","authors":"Elsa García-Mayoral, Álvaro Roura, Graham J. Pierce, Ángel F. González","doi":"10.1007/s00227-023-04379-x","DOIUrl":"https://doi.org/10.1007/s00227-023-04379-x","url":null,"abstract":"Knowledge of recruitment to a fishery is particularly important in short-lived species, like most cephalopods, in which there is a complete turnover of individual every 1 or 2 years. In this study, age, body length, statolith length and growth rates of loliginid paralarvae (Alloteuthis media, A. subulata and Loligo vulgaris) were determined to evaluate the form of the growth curve and differences between species and hatching seasons. A total of 222 paralarvae collected in zooplankton samples along the Galician coast (NW Spain) were used to determine relationships between dorsal mantle length (DML), statolith length (SL) and the number of increments (NI)) deposited in the statolith. The paralarvae of L. vulgaris were between 1 and 35 days old, while both Alloteuthis species ranged in age from 1 to 54 days. Generalised additive models (GAMs) revealed non-linear growth in DML, with L. vulgaris exhibiting higher DML-at-age than Alloteuthis species. The best parametric model fit for these data was obtained using exponential regressions. The SL–NI relationship also differed between species, with L. vulgaris having larger statolith length at age. The paralarvae of L. vulgaris and A. media had two well-differentiated hatching peaks, one in late spring-early summer (beginning of the upwelling season) and another peak in late autumn (end of the upwelling season). Alloteuthis subulata had an earlier hatching peak in spring than in the other two loliginid species—and the second peak in autumn was barely visible, possibly because this species occurs further north in areas not sampled in autumn.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"135 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Feminization of a mixed-stock foraging aggregation of immature green turtles (Chelonia mydas), 1975–2018 更正：未成年绿海龟（Chelonia mydas）混合种群觅食群的女性化，1975-2018 年

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-05 DOI: 10.1007/s00227-024-04409-2

Anne B. Meylan, Beth Brost, Liza J. Conrad, Steven H. Denison, Denise B. Flaherty, Jennifer A. Gray, Robert F. Hardy, Peter A. Meylan, Jeffrey A. Schwenter, Brett Tornwall, David W. Owens

引用次数: 0

First insights into the embryo and larval biology of the antipatharian coral Antipathella wollastoni 对反病理珊瑚 Antipathella wollastoni 胚胎和幼虫生物学的初步认识

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-05 DOI: 10.1007/s00227-024-04412-7

Maria Rakka, Antonio Godinho, Meri Bilan, Marina Carreiro-Silva

引用次数: 0