Marine BiologyPub Date : 2024-07-04DOI: 10.1007/s00227-024-04474-7
Olivia Saiz-M, Bellineth Valencia, Alan Giraldo
{"title":"Size distribution of macroinvertebrate communities associated with live and dead coral","authors":"Olivia Saiz-M, Bellineth Valencia, Alan Giraldo","doi":"10.1007/s00227-024-04474-7","DOIUrl":"https://doi.org/10.1007/s00227-024-04474-7","url":null,"abstract":"<p>Coral reef degradation is a worldwide and growing phenomenon triggering habitat transformation from live to dead coral fragments. Macroinvertebrates play key functions in coral reefs, yet research on the size distribution of their community attributes is limited, particularly in the Eastern Tropical Pacific (ETP). We assessed the size distribution of the macroinvertebrate communities in live and dead corals in an ETP coral reef off Colombia. Live coral supported greater macroinvertebrate biomass than dead corals. In live coral, > 90% of total biomass was allocated in the > 8 mm class, which was mostly represented by trapeziid crabs and alpheid shrimps, both obligate symbionts of <i>Pocillopora</i> colonies. No differences were found in macroinvertebrate densities between substrates. Macroinvertebrate communities were dominated by crustaceans, though not in every size class. In live coral, Decapoda dominated in all size classes except 0.5–1 mm, which was the only class where dominance of a single taxon was not observed. In dead corals, the dominance of crustaceans was only observed in the 0.5–1 mm class due to high abundances of tanaidaceans. The remaining size classes were dominated by Polychaeta (1–2 mm, 2–4 mm) and Ophiuroidea (4–8 mm, > 8 mm). Our findings highlight that coral degradation events could lead to macroinvertebrate assemblages with lower biomass contributions, higher proportions of small crustaceans (< 1 mm), and taxonomic shifts. Such transitions from live to dead corals could likely impact food-web interactions between macroinvertebrates and higher trophic levels, potentially altering the ecosystem services offered by coral reefs.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"48 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550082","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}
Marine BiologyPub Date : 2024-07-04DOI: 10.1007/s00227-024-04477-4
Elžbieta Kazanavičiūtė, James W. E. Dickey, Ismael Soto, Phillip J. Haubrock, Antonín Kouba, Reid S. Brennan, Gregor Steffen, Elizabeta Briski
{"title":"Seasonal changes in biodiversity of native and non-native amphipod taxa under diverse environmental contexts","authors":"Elžbieta Kazanavičiūtė, James W. E. Dickey, Ismael Soto, Phillip J. Haubrock, Antonín Kouba, Reid S. Brennan, Gregor Steffen, Elizabeta Briski","doi":"10.1007/s00227-024-04477-4","DOIUrl":"https://doi.org/10.1007/s00227-024-04477-4","url":null,"abstract":"<p>Anthropogenic disturbances are having strong, negative effects on aquatic systems globally, altering ecological communities and potentially creating vacant niches for both native and non-native species (NNS). Globalization and new trade routes have amplified the spread and establishment of NNS by connecting disturbed areas worldwide. In this study, we conducted a comparative assessment of seasonal variations in amphipod communities at three southeastern Baltic Sea locations – two anthropogenically impacted and one protected habitat – to determine if native and NNS diversity differed among these habitats. Our study revealed nine amphipod species - of which two were NNS - across all three habitats. The impacted habitats had significantly higher native species richness and lower NNS abundance. <i>Grandidierella japonica</i> was the only NNS found at the impacted habitas. In the case of the protected habitat, NNS <i>Gammarus tigrinus</i> was dominant for most of the year. In autumn, dominance shifted in favour of the native <i>Gammarus locusta</i> and <i>Microdeutopus</i> cf. <i>gryllotalpa</i>. <i>Grandidierella japonica</i> was not detected there. Although anthropogenically impacted habitats may be under higher invasion risk, other environmental factors, such as salinity and temperature, may be driving the establishment pattern of NNS and the resulting community structures. Furthermore, undisturbed and/or protected habitats may be highly vulnerable to invasions due to more tolerable environmental conditions, robust NNS populations and naïve native species to newcomers. Seasonality is an important aspect of ecological studies and must be taken into account, as omissions could potentially distort our understanding of the dynamics of ecosystems and prevent the detection of NNS.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"21 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552778","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}
Marine BiologyPub Date : 2024-07-03DOI: 10.1007/s00227-024-04475-6
Natascha Wosnick, Meg Langlais, Alexis Saunders
{"title":"Behavioral dynamics and feeding strategies of sharksuckers in symbiosis with Atlantic Nurse sharks: insights from a fish cleaning station in the bahamas","authors":"Natascha Wosnick, Meg Langlais, Alexis Saunders","doi":"10.1007/s00227-024-04475-6","DOIUrl":"https://doi.org/10.1007/s00227-024-04475-6","url":null,"abstract":"<p>The paper explores the dynamic relationship between sharksuckers and Atlantic Nurse sharks within a fish cleaning station in South Eleuthera, The Bahamas. Despite the prevalent symbiotic association between echeneid fishes and sharks, the specifics of their interactions, behavioral adaptations, and the influence of food availability remain understudied. The research employed a comprehensive observational approach, focusing on free-swimming and attached sharksucker’ behaviors (<i>Echeneis</i> spp.) in the presence of Atlantic Nurse sharks. Through a month-long study, both qualitative and quantitative analyses of the behaviors were conducted. The results challenge the traditional perception of a purely mutualistic or parasitic relationship, suggesting a more complex dynamic between sharksuckers and sharks. Specifically, the study indicates an increase in boldness and competitive behaviors towards sharks in a controlled feeding setting, indicating that sharksuckers’ behaviors and relationships with their hosts are constantly evolving and should not be treated as simply symbiotic.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"17 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523117","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}
Marine BiologyPub Date : 2024-06-28DOI: 10.1007/s00227-024-04467-6
Amy G. Coppock, Michael J. Kingsford, Geoffrey P. Jones
{"title":"Importance of complex sponges as habitat and feeding substrata for coral reef fishes","authors":"Amy G. Coppock, Michael J. Kingsford, Geoffrey P. Jones","doi":"10.1007/s00227-024-04467-6","DOIUrl":"https://doi.org/10.1007/s00227-024-04467-6","url":null,"abstract":"<p>Coral reef fishes are usually assumed to be most strongly associated with reef-building corals. However, sponges can be a significant structural component of coral reef ecosystems and their framework can enhance the local abundance and biodiversity of fish assemblages. Little is known regarding the range of fish species using complex sponges as either shelter or feeding substrata. Here we use a combination of stationary video cameras and focal animal sampling to document fish species positively associated with complex sponges in Kimbe Bay, Papua New Guinea. Stationary cameras identified 45 fish species using the sponges for either shelter, feeding substrata or as sites for ambush predation. A guild of 10 individual fish species from five families (Blenniidae, Chaetodontidae, Gobiidae, Labridae and Pomacentridae) were observed to quantify sponge and other habitat use and compared with habitat availability to determine the level of sponge selectivity. One species, <i>Pleurosicya elongata</i> (the Slender Spongegoby), lived in obligate association with <i>Ianthella basta</i> (Elephant Ear sponge), and there was a positive relationship between sponge size and number of resident fish, however this was not significant for all life stages. Five other fish species appeared to preferentially select sponges as habitat (<i>Amblyglyphidodon aureus</i>, <i>Chaetodon kleinii</i>, <i>Coradion chrysozonus</i>, <i>Escenius prooculis</i> and <i>Pomacentrus nigromanus</i>), while for others, sponge use appeared incidental. When selectivity indices were calculated for specific sponge species it was apparent that some fishes exhibited preferences for particular sponge species or growth forms. These results suggest more fish species may be reliant on sponges than is widely appreciated.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"26 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505014","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}
Marine BiologyPub Date : 2024-06-28DOI: 10.1007/s00227-024-04470-x
Hugo Lassauce, Olivier Chateau, Laurent Wantiez
{"title":"Characteristics, residency and site fidelity of photo-identified reef manta rays (Mobula alfredi) population in New Caledonia","authors":"Hugo Lassauce, Olivier Chateau, Laurent Wantiez","doi":"10.1007/s00227-024-04470-x","DOIUrl":"https://doi.org/10.1007/s00227-024-04470-x","url":null,"abstract":"<p>Reef manta rays (<i>Mobula alfredi</i>) face threats from human exploitation and activity in several regions of the world and crucial information on the ecology of the species is needed. The species is observed at several sites in all parts of the archipelago of New Caledonia where anthropogenic influence is presumed to be minimal. This study is the first to investigate the population of New Caledonia and focuses on its characteristics and its habitat use. Photographs of reef manta rays were collected directly from the authors (14.4%) between 2017 and 2020 and gathered from recreational divers and snorkelers (85.6%) from 11 sites around New Caledonia. The authors used the unique ventral coloration patterns of the manta rays that were clearly identifiable from 1741 of these photographs to identify 391 individuals and record their physical characteristics (sex, injuries, and colour morph) and resighting rates. These results highlight the widespread distribution of the species in the archipelago (11 sites) with little connectivity between all aggregations sites, with only 5.4% of the individuals observed at more than one site. Strong and long-term site fidelity was recorded at all studied sites through re-sighting rates (52.2% overall) and residency analysis. The population also records the world highest known proportion of melanistic manta rays (43%) to date, and a balanced male: female ratio (1.0:1.15). The analysis of injuries reported that 44.8% of all reef manta rays identified (n = 391) had noticeable wounds or injuries with no significant difference in the proportions of males and females injured. From these injured individuals only 9.8% of injuries judged to be of anthropogenic origin and 29.7% from attempted predation. Our study complements and correlates previous findings on this population that revealed strong site fidelity and low connectivity. The different characteristics of this population of reef manta rays also emphasize that concerns about species in New Caledonia are limited and that such favourable context needs to be preserved as reference for conservation.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"43 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505015","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}
Marine BiologyPub Date : 2024-06-25DOI: 10.1007/s00227-024-04468-5
Andrea Toso, Marta Mammone, Sergio Rossi, Stefano Piraino, Adriana Giangrande
{"title":"Effect of temperature and body size on anterior and posterior regeneration in Hermodice carunculata (Polychaeta, Amphinomidae)","authors":"Andrea Toso, Marta Mammone, Sergio Rossi, Stefano Piraino, Adriana Giangrande","doi":"10.1007/s00227-024-04468-5","DOIUrl":"https://doi.org/10.1007/s00227-024-04468-5","url":null,"abstract":"<p>In recent years, population outbreaks of the annelid <i>Hermodice carunculata</i> (Polychaeta, Amphinomidae) are recurrently detected along the coastal zone of the Salento peninsula (Southern Italy), with impacts on marine benthic ecosystems. Annelida are renowned for their remarkable regeneration potential, enabling them to reform lost body parts. A handful of studies have reported posterior regeneration of <i>H. carunculata</i>, but anterior regeneration has not been fully explored. In this study, we investigated the capacity of <i>H. carunculata</i> collected in shallow coastal areas (Ionian Sea, 40°08’26.9” N 17°58’44.1” E) to regenerate anterior body parts under different temperature conditions (22 and 14 °C) and considering two different body sizes (∼ 4 g and 25 g). In addition, histological analysis and lipid analyses were carried out to detect changes in the reproductive cycle and lipid storage during ongoing regeneration. The results suggest that small and large-sized specimens of <i>H. carunculata</i> can regenerate efficiently anterior body parts in 12–20 weeks post amputation when kept at 22 °C. Small-sized worms kept at 14 °C regenerated slower but died in 24 weeks post amputation before regenerating a mouth, while large-sized worms kept at 14 °C were affected by a 100% mortality during blastema formation. In addition, lipid extraction analyses show that <i>H. carunculata</i> can regenerate during extended periods of starvation by <i>de novo</i> synthesizing lipid reserves and regeneration in <i>H. carunculata</i> does not negatively impact the reproductive cycle, as gametogenesis occurs also during the regenerative processes.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"150 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505107","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}
{"title":"The adaptation of three scleractinian corals from the perspectives of Symbiodiniaceae and photosynthesis capacity at Luhuitou fringing reef","authors":"Yushan Li, Rou-Wen Chen, Xiangbo Liu, Zhuoran Li, Wentao Zhu, Aimin Wang, Xiubao Li","doi":"10.1007/s00227-024-04472-9","DOIUrl":"https://doi.org/10.1007/s00227-024-04472-9","url":null,"abstract":"<p>The growth properties and environmental adaptability of different corals and symbionts vary. Therefore, insights from the adaptive mechanisms of Symbiodiniaceae in corals are very meaningful. In this study, we surveyed the seawater characteristics at three sites on Luhuitou fringing reef, Hainan Island (China), sampling three native corals <i>Pocillopora damicornis</i>, <i>Acropora hyacinthus</i>, and <i>Galaxea fascicularis</i> on 27 September 2021. The photo-physiological (Fv/Fm, Y(II), α, and rETR) were measured, and high-throughput sequencing of Symbiodiniaceae ITS was performed. The Luhuitou site had the lowest temperature (28.845 °C ± 0.01), salinity (33.967 ± 0.03), and pH (8.468 ± 0.05) among the three sites. The Sanya site contained significantly the highest ammonium (7.406 μmol/L ± 1,<i> P</i> < 0.05). The nitrate of the Xiaozhou site was 1.5 times significantly higher than the other two sites. Three corals and their Symbiodiniaceae were adapted differently. <i>P. damicornis</i> showed more plasticity and was dominant by <i>Cladocopium</i> sp. C1d at high-ammonium habitat. <i>A. hyacinthus</i> was dominated by <i>Cladocopium</i> (C3 and C1232) and they had the lowest Fv/Fm (0.595 ± 0.02) in poor integrated water quality environments (the Xiaozhou site) among three corals, suggesting that the less adaptation. <i>G. fascicularis</i> established a stable symbiotic relationship with <i>Durusidinium</i> sp. D1, and they had a more stable symbiotic system and were better suited for long-term reef restoration. Our results provide a deeper understanding of the environmental adaptations of three corals at the Luhuitou fringing reef. Meanwhile, it provides a perspective application for coral transplantation species selection in restoring local reef ecology in the future.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"4 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505016","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}
Marine BiologyPub Date : 2024-06-19DOI: 10.1007/s00227-024-04454-x
Oliver N. Shipley, Seth D. Newsome, Tonya M. Long, Susan Murasko, Ryan Jones, Jakub Kircun, R. Pearse Webster, Simona A. Ceriani
{"title":"Carbon and nitrogen isotopes of lizardfish provide insight into regional patterns of ocean biogeochemistry across the eastern continental United States","authors":"Oliver N. Shipley, Seth D. Newsome, Tonya M. Long, Susan Murasko, Ryan Jones, Jakub Kircun, R. Pearse Webster, Simona A. Ceriani","doi":"10.1007/s00227-024-04454-x","DOIUrl":"https://doi.org/10.1007/s00227-024-04454-x","url":null,"abstract":"<p>Mapping spatial variation in stable isotope values (isoscapes) of primary producers and consumers can provide insight into regional patterns of biogeochemistry and be used to trace the movements of mobile animals. Here we present carbon (δ<sup>13</sup>C) and nitrogen (δ<sup>15</sup>N) isoscapes for an expansive region of the continental United States (Mid Atlantic Bight to the NW Gulf of Mexico) derived from inshore lizardfish (<i>Synodus foetens</i>) and explore temporal stability and environmental drivers of observed isotopic variation. We observed significant spatial variation in lizardfish δ<sup>13</sup>C and δ<sup>15</sup>N values throughout much of the Atlantic and Gulf coasts, reflecting local biogeochemistry regimes. Extensive sampling throughout the northern Gulf of Mexico (NGOM) revealed positive relationships between lizardfish δ<sup>13</sup>C values and bottom temperature, likely reflecting lower carbon isotope discrimination between CO<sub>2</sub> and phytoplankton in highly productive, warm, inshore environments. Conversely, δ<sup>15</sup>N values were not well explained by environmental parameters, but appeared higher in nearshore environments of the NGOM, which are heavily influenced by nitrogenous run-off from land. An isotopically unique region of high δ<sup>13</sup>C values and low δ<sup>15</sup>N values were observed for lizardfish sampled in the Eastern NGOM off the southwest coast of Florida, reflecting a potential influence of seagrass and/or macroalgal productivity supporting the base of the food web. Overall, these findings underscore the utility of benthic lizardfish stable isotopes for inferring local patterns of ocean biogeochemistry throughout expansive ocean environments. In application, these data can be used to define migratory histories of mobile taxa and support contemporary critical habitat assessments.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"31 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505018","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}
Marine BiologyPub Date : 2024-06-04DOI: 10.1007/s00227-024-04463-w
Cheila Raposo, Rui Rebelo, Paulo Catry, Maria Betânia Ferreira-Airaud, Castro Barbosa, Tumbulo Bamba Garcia, Aissa Regalla, Manuel Sá Sampaio, Ana Rita Patrício
{"title":"Inter-island nesting dynamics and clutch survival of green turtles Chelonia mydas within a marine protected area in the Bijagós Archipelago, West Africa","authors":"Cheila Raposo, Rui Rebelo, Paulo Catry, Maria Betânia Ferreira-Airaud, Castro Barbosa, Tumbulo Bamba Garcia, Aissa Regalla, Manuel Sá Sampaio, Ana Rita Patrício","doi":"10.1007/s00227-024-04463-w","DOIUrl":"https://doi.org/10.1007/s00227-024-04463-w","url":null,"abstract":"<p>Understanding spatial heterogeneity in reproductive success among at-risk populations facing localised threats is key for conservation. Sea turtle populations often concentrate at one nesting site, diverting conservation efforts from adjacent smaller rookeries. Poilão Island, Bijagós Archipelago, Guinea-Bissau, is a notable rookery for green turtles <i>Chelonia mydas</i> within the João Vieira-Poilão Marine National Park, surrounded by three islands (Cavalos, Meio and João Vieira), with lower nesting activity. Poilão’s nesting suitability may decrease due to turtle population growth and sea level rise, exacerbating already high nest density. As the potential usage of secondary sites may arise, we assessed green turtle clutch survival and related threats in Poilão and its neighbouring islands. High nest density on Poilão leads to high clutch destruction by later turtles, resulting in surplus eggs on the beach surface and consequently low clutch predation (4.0%, <i>n</i> = 69, 2000). Here, the overall mean hatching success estimated was 67.9 ± 36.7% (<i>n</i> = 631, 2015–2022), contrasting with a significantly lower value on Meio in 2019 (11.9 ± 23.6%, <i>n</i> = 21), where clutch predation was high (83.7%, <i>n</i> = 98). Moderate to high clutch predation was also observed on Cavalos (36.0%, <i>n</i> = 64) and João Vieira (76.0%, <i>n</i> = 175). Cavalos and Meio likely face higher clutch flooding compared to Poilão. These findings, alongside observations of turtle exchanges between islands, may suggest a source-sink dynamic, where low reproductive output sink habitats (neighbouring islands) are utilized by migrants from Poilão (source), which currently offers the best conditions for clutch survival.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"36 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253150","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}
Marine BiologyPub Date : 2024-06-04DOI: 10.1007/s00227-024-04450-1
Emily G. Webster, Stephanie Duce, Mark Hamann, Nicholas Murray, Takahiro Shimada, Colin Limpus
{"title":"Should I stay or should I go? The influence of environmental conditions on green turtle residence time and outward transit in foraging areas","authors":"Emily G. Webster, Stephanie Duce, Mark Hamann, Nicholas Murray, Takahiro Shimada, Colin Limpus","doi":"10.1007/s00227-024-04450-1","DOIUrl":"https://doi.org/10.1007/s00227-024-04450-1","url":null,"abstract":"<p>Foraging animals move through the environment to satisfy their requirements for food, rest, reproduction and risk-avoidance. Understanding how animals respond to changing environmental conditions can help to characterise favourable habitat and determine whether they might be motivated to depart when those habitats become unsuitable. Foraging green turtles are typically residents that scarcely move in response to environmental changes or disturbances. Some individuals though, exhibit high mobility at fine scales. We developed an analysis of Fastloc GPS tracks of 61 green turtles using cox regression models and generalised linear mixed models to investigate the influence of a suite of environmental characteristics on the length of residence time and probability of turtles transitioning between two behavioural modes, “stay” or “go”. Decisions to move (“go”) were influenced by short-term changes in the local environmental conditions. Individuals were more likely to “stay” when temperature increased during their stay and were more likely to “go” when turbidity decreased, and they entered deeper habitats. This result implies that foraging and resting (“staying”) primarily occurs in benthic, shallow, warm habitats, while transit (“going”) is facilitated in deeper, clear water. We also determined that individuals within the green turtle foraging aggregation respond differently to environmental cues to move and hypothesise that a diversity of strategies within a foraging aggregation could confer its resilience to disturbance events. Our study provides new evidence of the factors influencing movements in green turtles and can aid in predicting how they may respond to future changes and enhance risk mitigation efforts through dynamic and adaptive planning.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"20 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253325","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}