Marine Biology最新文献_第9页

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

Seasonal effects of short-term stress on susceptibility to herbivores and DMSP induction in the intertidal green alga Ulva fenestrata 短期胁迫对潮间带绿藻（Ulva fenestrata）对食草动物的敏感性和 DMSP 诱导的季节性影响

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-04 DOI: 10.1007/s00227-024-04413-6

Kathryn L. Van Alstyne, Natasha Borgen

{"title":"Seasonal effects of short-term stress on susceptibility to herbivores and DMSP induction in the intertidal green alga Ulva fenestrata","authors":"Kathryn L. Van Alstyne, Natasha Borgen","doi":"10.1007/s00227-024-04413-6","DOIUrl":"https://doi.org/10.1007/s00227-024-04413-6","url":null,"abstract":"When emersed, intertidal seaweeds experience rapid changes in environmental conditions. On warm sunny days, seaweeds can desiccate soon after emersion. On rainy days or in areas with freshwater inputs, they may experience rapid drops in salinity. To determine whether one low tide’s exposure to environmental stress alters seaweed growth, palatability to herbivores, and dimethylsulfoniopropionate (DMSP) concentrations, we exposed Ulva fenestrata to desiccation and hyposaline conditions for 3 h in summer and winter. Two days later, summer desiccation decreased growth, consumption by Lacuna vincta, and DMSP by 71%, 83%, and 67%, relative to controls. Winter desiccation reduced DMSP by 19% and did not affect growth or L. vincta feeding. Summer hyposaline conditions increased growth by 75% but did not affect L. vincta grazing or DMSP, whereas winter hyposaline conditions reduced growth by 37%. After 2 days of exposure to L. vincta, seaweeds were allowed to recover for 7 days, then DMSP was measured. U. fenestrata desiccated in the summer did not survive. Average DMSP concentrations were 127% higher in grazed than ungrazed seaweed in the summer salinity experiment, providing evidence that grazing induces DMSP. No DMSP induction occurred in winter, possibly because grazing rates were much lower. In a follow-up summer desiccation experiment, maximum quantum yields (MQYs) and DMSP decreased to 12% and 14% of controls within an hour. After 7 days, MQY and DMSP concentrations recovered, but growth was 81–97% lower in seaweeds desiccated for 30–60 min, relative to controls. These results provide the first evidence for grazer-induced DMSP increases.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"206 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025868","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

The fate of salp blooms: decomposition and sinking of salp carcasses 鲑鱼繁殖的命运：鲑鱼尸体的分解和下沉

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-03-01 DOI: 10.1007/s00227-024-04403-8

Polina Orlov, Evgeny Pakhomov

{"title":"The fate of salp blooms: decomposition and sinking of salp carcasses","authors":"Polina Orlov, Evgeny Pakhomov","doi":"10.1007/s00227-024-04403-8","DOIUrl":"https://doi.org/10.1007/s00227-024-04403-8","url":null,"abstract":"Gelatinous zooplankton (GZ) biomass is an important, yet often overlooked, vector of the particulate organic matter downward export and a nutritional prey source for the mesopelagic and benthic communities. To better quantify the potential impact of their blooms on biogeochemistry and food webs, we performed decomposition and sinking experiments under two different temperature regimes, 6 and 12 °C using 260 Salpa aspera, sampled in the Northeast Pacific (48.39°–50.40°N, 126.40°–145.00°W) during May 2021. Salps sank 1312 and 1424 m day−1 on average in 6 and 12 °C, respectively. The fast sinking is common among other salp species. Salp decay was exponential and occurred ~ 1.5 times faster under warmer conditions. Comparison of the published GZ decay rates supported their strong temperature dependence (Q10 = 3.46) and revealed that S. aspera decayed slower than most GZ taxa. Carcass sinking rates were higher than previously reported for this species and slowed after a prolonged decay. Biochemical (proteins, carbohydrates, lipids) and elemental (C: carbon, N: nitrogen) compositions were determined for salps at various decomposition stages. The high water content (~ 97%) and low organic content (27.8 ± 7.1% dry weight) were typical of other thaliaceans. The high C:N ratio (6.61 ± 1.14) of S. aspera, compared to many thaliaceans, suggested that their carcasses are valuable sources of carbon beyond the euphotic zone.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"130 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140019289","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

Cephalopod paralarvae from the southeast–south Brazilian outer shelf and slope 来自巴西东南-南部外陆架和斜坡的头足类副脊椎动物

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-02-29 DOI: 10.1007/s00227-024-04401-w

Danielle Ortiz de Ortiz, Letícia Cazarin Baldoni, Erik Muxagata, Erica Alvez Gonzalez Vidal

{"title":"Cephalopod paralarvae from the southeast–south Brazilian outer shelf and slope","authors":"Danielle Ortiz de Ortiz, Letícia Cazarin Baldoni, Erik Muxagata, Erica Alvez Gonzalez Vidal","doi":"10.1007/s00227-024-04401-w","DOIUrl":"https://doi.org/10.1007/s00227-024-04401-w","url":null,"abstract":"Cephalopod paralarvae were collected in the southeast–south Brazilian outer shelf and continental slope (24°–34°S) from 2009 to 2015 to evaluate their distribution and abundance in relation to water masses during Autumn and Spring seasons. A total of 801 paralarvae were caught with Bongo nets (500 µm mesh) in oblique tows at sample depths of up to 250 m. Fourteen families, 22 genera, and 15 species were identified. The most abundant families were Argonautidae (40.1%), Ommastrephidae (31%), and Enoploteuthidae (23.7%). The highest abundances were recorded on Autumn 2014 (667 ind 1000 m−3) and Argonauta nodosus was the most abundant species in the study area (437 ind 1000 m−3). Ommastrephes sp., Illex argentinus, and Abralia spp. paralarvae were also abundant (124, 131, and 135 ind 1000 m−3, respectively) during Spring 2009, 2010, and 2014, respectively. These species were collected under the influence of Tropical Water (TW), Subtropical Shelf Water (STSW), and South Atlantic Central Water (SACW). Illex argentinus and Ommastrephes sp. paralarvae occupy different niches. The latter was significantly more abundant in the northern area, in TW and TW + SACW water masses, while I. argentinus was more abundant in the outer southern shelf, in the STSW. This is the first study evaluating the composition, distribution, and abundance of cephalopod paralarvae in the study area, while also providing the first record of Bolitaena pygmaea, Egea inermis, Pterygioteuthis sp., and Promachoteuthis sp. paralarvae.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"5 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140019397","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

Remote hideaways: first insights into the population sizes, habitat use and residency of manta rays at aggregation areas in Seychelles 遥远的藏身之处：首次了解塞舌尔蝠鲼聚集区的种群数量、栖息地使用和居住情况

IF 2.4 3区生物学

Marine Biology Pub Date : 2024-02-26 DOI: 10.1007/s00227-024-04405-6

{"title":"Remote hideaways: first insights into the population sizes, habitat use and residency of manta rays at aggregation areas in Seychelles","authors":"","doi":"10.1007/s00227-024-04405-6","DOIUrl":"https://doi.org/10.1007/s00227-024-04405-6","url":null,"abstract":"<h3>Abstract</h3> Understanding the aggregation and habitat use patterns of a species can aid the formulation and improved design of management strategies aiming to conserve vulnerable populations. We used photo-identification techniques and a novel remote underwater camera system to examine the population sizes, patterns of residency and habitat use of oceanic (Mobula birostris) and reef (Mobula alfredi) manta rays in Seychelles (5.42°S; 53.30°E) between July 2006 and December 2018. Sightings of M. birostris were infrequent (n = 5), suggesting that if aggregation areas for this species exist, they occur outside of the boundary of our study. A total of 236 individual M. alfredi were identified across all surveys, 66.5% of which were sighted at D’Arros Island (Amirante Group) and 22.5% at St. François Atoll (Alphonse Group). Males and females were evenly represented within the identified population. M. alfredi visited a cleaning station at D’Arros Island less frequently during dawn and dusk than at midday, likely due to the adoption of a crepuscular foraging strategy. The remote and isolated nature of the Amirante and Alphonse Group aggregation areas, coupled with the lack of a targeted mobulid fishery in Seychelles, suggests that with appropriate regulations and monitoring, the marine protected areas gazetted within these two groups will benefit the conservation of M. alfredi in Seychelles.","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"256 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139977414","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