Biological Bulletin最新文献

Confirmation of Spurilla braziliana (Mollusca: Nudibranchia) in the Southwest Atlantic: Morphology, Phylogeny, and Distribution. 西南大西洋巴西Spurilla braziliana（软体动物：裸鳃目）的确认：形态、系统发育和分布。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2025-02-01 Epub Date: 2026-02-10 DOI: 10.1086/739554

Ezequiel A Fiotto, Nicolás Cetra, Diego E Gutiérrez Gregoric, Andrea Roche

{"title":"Confirmation of Spurilla braziliana (Mollusca: Nudibranchia) in the Southwest Atlantic: Morphology, Phylogeny, and Distribution.","authors":"Ezequiel A Fiotto, Nicolás Cetra, Diego E Gutiérrez Gregoric, Andrea Roche","doi":"10.1086/739554","DOIUrl":"https://doi.org/10.1086/739554","url":null,"abstract":"AbstractNudibranchs of the genus Spurilla (Aeolidiidae) are currently represented worldwide by five species: S. braziliana, S. croisicensis, S. dupontae, S. neapolitana, and S. sargassicola. Two of these, S. neapolitana and S. braziliana, have been previously reported from the Argentine Sea. This study aimed to identify Spurilla specimens collected from intertidal zones at four sites in the San Matías Gulf. We conducted detailed morphological and anatomical examinations, including external traits (body coloration, rhinophores, and cerata) and internal structures (radula, jaws, nervous system, and reproductive system). These characteristics were compared with published descriptions of all five known species. To strengthen our findings, we incorporated a molecular approach based on mitochondrial gene sequences. The analysis revealed low genetic differentiation between populations from Argentina and Brazil, supporting the presence of a single, widespread species, S. braziliana, throughout the southwestern Atlantic. Genetic patterns also suggest that Brazil may represent the species' center of origin, with subsequent southward dispersal to Argentina and northward expansion toward Central America and the Caribbean. This revision confirms that S. braziliana is the only species of the genus present along the western coast of the San Matías Gulf, contributing to a clearer understanding of regional marine biodiversity and species distributions.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"248 1","pages":"11-25"},"PeriodicalIF":1.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147823554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Gregarious and Nongregarious Larval Settlement in the Aggregation-Forming Annelid Ficopomatus enigmaticus. 聚类环节动物谜形榕的群居和非群居幼虫定居。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2025-02-01 Epub Date: 2026-02-23 DOI: 10.1086/740316

Alex Mendelson, Keomonyroth Nuon, Bruno Pernet

{"title":"Gregarious and Nongregarious Larval Settlement in the Aggregation-Forming Annelid Ficopomatus enigmaticus.","authors":"Alex Mendelson, Keomonyroth Nuon, Bruno Pernet","doi":"10.1086/740316","DOIUrl":"https://doi.org/10.1086/740316","url":null,"abstract":"AbstractGregarious larval settlement, a phenomenon in which cues associated with conspecifics induce larval settlement, plays a role in the growth of existing aggregations of many aggregation-forming sessile marine invertebrates. The formation of new aggregations, however, requires larvae to settle in response to other cues. The mechanism underlying this variation in larval settlement responses is unknown for most species with gregarious settlement. In this study we first present evidence that larvae of the serpulid annelid Ficopomatus enigmaticus settle gregariously. In no-choice, still-water experiments, a much higher percentage of larvae settled after 24 h of exposure to conspecific tube than after exposure to mussel shell collected from the same habitat. We then tested the hypothesis that larvae of F. enigmaticus display a genetically determined dimorphism in settlement behavior like that of the serpulid Hydroides dianthus, with most larvae capable of settling only in response to a conspecific cue but a small percentage of larvae capable of settling only in response to a biofilm cue. If this hypothesis is correct, the sum of the percentages of larvae that settle in response to a conspecific cue and those that settle in response to a biofilm cue cannot exceed 100% (since each larva can accept only one of the two cue types throughout its competent period). Our data on F. enigmaticus are not consistent with this prediction, suggesting that individual larvae can respond to multiple types of settlement cues during their competent period. This has significant implications for how frequently larvae can form new aggregations, a topic of special importance for F. enigmaticus and H. dianthus, both of which are well-known invasive species in marine habitats around the globe.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"248 1","pages":"1-10"},"PeriodicalIF":1.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147823525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Tyramine (Dopamine) β-Hydroxylase and Octopamine Immunoreactivities in the Central Nervous System of the Snail Lymnaea stagnalis. 蜗牛中枢神经系统中酪胺（多巴胺）β-羟化酶和章鱼胺的免疫反应。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2025-02-01 Epub Date: 2026-04-08 DOI: 10.1086/741017

Griffin A Beach, Alexander P Young, Russell C Wyeth, Roger P Croll

{"title":"Tyramine (Dopamine) β-Hydroxylase and Octopamine Immunoreactivities in the Central Nervous System of the Snail Lymnaea stagnalis.","authors":"Griffin A Beach, Alexander P Young, Russell C Wyeth, Roger P Croll","doi":"10.1086/741017","DOIUrl":"https://doi.org/10.1086/741017","url":null,"abstract":"AbstractResearch suggests that tyramine and octopamine have complementary distributions and roles in invertebrates somewhat analogous to those of norepinephrine and epinephrine in vertebrates. Interestingly, these groups of neurotransmitters/hormones share similar biosynthetic pathways that include the apparently homologous enzymes tyramine-β hydroxylase (TBH) and dopamine-β hydroxylase (DBH), which convert tyramine to octopamine and dopamine to norepinephrine, respectively. In this paper we report sequence alignments and Western blots that support the homology of TBH and DBH, as well as validate the use of an antibody raised against a DBH target sequence for immunohistochemical analysis of octopaminergic neural elements in molluscs. Accordingly, we found that DBH and octopamine immunoreactivities did indeed colocalize in several, but not all, neurons in the buccal, cerebral, and pedal ganglia of the pond snail Lymnaea stagnalis. Additional, apparently off-target labeling was also observed that warrants future examination. It was noteworthy, however, that no colocalization was found between DBH and tyrosine hydroxylase immunoreactivities, thus providing no evidence for norepinephrine synthesis within the central nervous system of this mollusc. These results expand on previous descriptions of neuroanatomical examinations of L. stagnalis and reinforce the argument that DBH and TBH are homologous proteins, thus supporting DBH/TBH as a target to investigate octopaminergic localization and function in molluscs and, more broadly, among invertebrates.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"248 1","pages":"26-46"},"PeriodicalIF":1.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147823546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Cuttlefish Turn Slowly but Tightly with Directional Flexibility Using Short Vortex Ring Jets. 墨鱼用短旋涡环射流缓慢而紧密地转向。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2025-02-01 Epub Date: 2026-04-08 DOI: 10.1086/740963

Alissa M Ganley, Paul S Krueger, Ian K Bartol

{"title":"Cuttlefish Turn Slowly but Tightly with Directional Flexibility Using Short Vortex Ring Jets.","authors":"Alissa M Ganley, Paul S Krueger, Ian K Bartol","doi":"10.1086/740963","DOIUrl":"https://doi.org/10.1086/740963","url":null,"abstract":"AbstractCephalopods, such as squids and cuttlefishes, play an integral role in food web dynamics as both prey and predator, whereby proficient turning is required for successful predator avoidance and prey capture. However, surprisingly little is known about the turning capabilities of most cephalopods. In this study, body movements and 3D flow fields around adult dwarf cuttlefish, Sepia bandensis, were recorded during a range of maneuvers to quantify turning performance. While significant variation in turning capabilities was observed, S. bandensis, on average, turned tightly (mean length-specific turning radius = 0.14±0.013 [SEM]; minimum length-specific turning radius = 0.013±0.002) but relatively slowly (average angular velocity = 45.85°±2.70° s-1; maximum angular velocity = 110.34°±7.09° s-1). Jet properties were not reliable predictors of turn performance, as S. bandensis relied primarily on short vortex ring jets (length-to-diameter ratio of jet vorticity = 2.47±0.18) of moderate velocity (average jet velocity ∼ 14 cm s-1; maximum jet velocity ∼ 22 cm s-1) irrespective of turn type. The orientation of the turn (arms-first vs. tail-first) did not have a significant effect on kinematic or hydrodynamic properties, and most turns were performed arms-first (72.6% of turns). Compared to other cephalopods, cuttlefish turned using shorter jets with similar velocity profiles. These results are consistent with the residence of S. bandensis in complex benthic habitats, where tight, controlled turns facilitated by short jet pulses and high turning proficiency in either orientation are needed.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"248 1","pages":"47-62"},"PeriodicalIF":1.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147823559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Armor of a Keystone Predator: Intraspecific Aboral Spine Variation in the Ochre Sea Star, Pisaster ochraceus (Brandt). 拱心石捕食者的盔甲：赭色海星的种内外脊变异，Pisaster ochraceus （Brandt）。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2024-10-01 Epub Date: 2025-10-17 DOI: 10.1086/737305

Angela J Jones, Angelina N Zuelow, Paul E Bourdeau

{"title":"The Armor of a Keystone Predator: Intraspecific Aboral Spine Variation in the Ochre Sea Star, Pisaster ochraceus (Brandt).","authors":"Angela J Jones, Angelina N Zuelow, Paul E Bourdeau","doi":"10.1086/737305","DOIUrl":"https://doi.org/10.1086/737305","url":null,"abstract":"AbstractThe abrasive, high-impact environment of rocky intertidal zones produces important abiotic stressors that many calcifying organisms are armored against. The ochre sea star (Pisaster ochraceus), a slow-moving but ecologically important predator in the wave-swept rocky intertidal of the eastern North Pacific, is covered aborally with calcium carbonate ossicles that are modified into spines. These spines may act as armor, providing lightweight protection for Pisaster against impacts and abrasion from abiotic particles in the intertidal. We used digital image analysis and scanning electron microscopy to characterize variation in the aboral armor of Pisaster across a range of sizes and intertidal habitats that vary in the joint impacts of water motion and abrasion. We found that Pisaster from different habitats exhibited distinct relationships between size and investment in aboral armor (spine density and areal spine coverage). Aboral armor was significantly higher in Pisaster from wave-exposed shores on which joint impacts of water motion and abrasion were highest, especially in smaller-sized individuals. We also identified specific aboral spine morphotypes, the proportions of which varied according to habitat. Individuals from wave-swept rock benches and boulder fields had short, blunt, and convex spines, whereas individuals from protected embayments had a higher proportion of upright, tapered, or columnar spines. Our results suggest that increased density and areal coverage of wider, convex spines in Pisaster are adaptive for more vulnerable life stages and in more abrasive and high-impact habitats. Future work should determine whether habitat-associated variation in the armor of Pisaster reflects a functional trade-off with feeding ability and whether it is primarily genetic or phenotypically plastic.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"247 2-3","pages":"87-100"},"PeriodicalIF":1.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145795641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Energy Cost of RNA Synthesis in Sea Urchin Embryos (Strongylocentrotus purpuratus). 海胆胚胎RNA合成的能量消耗。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2024-10-01 Epub Date: 2025-11-21 DOI: 10.1086/738960

Francis T C Pan, Donal T Manahan

{"title":"The Energy Cost of RNA Synthesis in Sea Urchin Embryos (Strongylocentrotus purpuratus).","authors":"Francis T C Pan, Donal T Manahan","doi":"10.1086/738960","DOIUrl":"https://doi.org/10.1086/738960","url":null,"abstract":"AbstractDefining the metabolic cost of specific biochemical processes is key to understanding strategies of energy (ATP) allocation. In this study, we determined the energy cost of RNA synthesis and the allocation of the ATP pool to this biosynthetic process. Rates of oxygen consumption, RNA synthesis, and protein synthesis were measured in early-stage embryos (single cell layer, 18-h-old blastula stage) of the sea urchin (Strongylocentrotus purpuratus) that have high rates of RNA synthesis. The inhibitory effects of actinomycin D on these processes were measured to calculate the energy cost of RNA synthesis. Across 15 different cohorts of embryos studied, the average rate of RNA synthesis was 0.19 ± 0.031 (SEM) ng RNA embryo-1 h-1. In the presence of actinomycin D, the rate of RNA synthesis decreased by 59%, and respiration decreased by 26%. As expected, actinomycin D also inhibited protein synthesis (by 28%) but had no effect on rates of uridine and alanine transport. This analysis revealed that the energy cost of RNA synthesis is 2.01 ± 0.24 (SEM) μJ (ng RNA synthesis)-1-a value that is notably similar to the known cost of protein synthesis in this species of 2.40 ± 0.21 μJ (ng protein synthesis)-1. In embryos, the rate of RNA synthesis was lower than that of protein synthesis, resulting in the former requiring only 11% of the total available ATP pool, compared to 67% for the latter. The significance of these findings is presented in the context of understanding the constraints and trade-offs of ATP allocation during development.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"247 2-3","pages":"75-86"},"PeriodicalIF":1.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145795593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Light Sensitivity of the Arctic Copepod Metridia longa during Midnight Sun and Polar Night. 北极桡足动物在午夜太阳和极夜的光敏性。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2024-10-01 Epub Date: 2025-09-24 DOI: 10.1086/737307

Meaghan Lightfoot, Kim S Last, Jonathan H Cohen

{"title":"Light Sensitivity of the Arctic Copepod Metridia longa during Midnight Sun and Polar Night.","authors":"Meaghan Lightfoot, Kim S Last, Jonathan H Cohen","doi":"10.1086/737307","DOIUrl":"https://doi.org/10.1086/737307","url":null,"abstract":"AbstractThe high Arctic is defined by an annual light regime ranging from 24-h light (Midnight Sun) to 24-h dark (Polar Night). Light acts as an important cue for marine zooplankton, influencing their orientation and vertical migration, prey detection and predator avoidance, and population dynamics and reproductive strategies. The spectrum and intensity of underwater light differ between Midnight Sun and Polar Night, and these differences are relevant to zooplankton visual processes. Here, we determine behavioral responses of the Arctic copepod Metridia longa, measured as swimming activity in a novel laboratory apparatus, to spectral- and irradiance-controlled light stimuli during times of Midnight Sun and Polar Night. Metridia longa maintains a consistent blue-green spectral response, from 400 to 550 nm, during both times of year. However, peak spectral response shifted between seasons, with Midnight Sun individuals showing increased activity at 501 nm compared to 473-490 nm during Polar Night. Additionally, Polar Night M. longa showed heightened irradiance sensitivity by an order of magnitude as compared to Midnight Sun individuals. Their irradiance response was also consistent across varying temperatures. We show that spectral and irradiance responses in M. longa are seasonally adapted and temperature compensated, suggesting that this copepod maintains a consistent light-mediated predator avoidance capacity, despite predicted seasonal light and temperature shifts in the high Arctic.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"247 2-3","pages":"118-133"},"PeriodicalIF":1.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145795583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Photophores in Stomiiform Fishes: Morphology, Distribution, and Putative Behavioral Roles. 气孔形鱼类的光吸收器：形态、分布和推测的行为作用。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2024-10-01 Epub Date: 2025-11-10 DOI: 10.1086/738399

Ashley N Marranzino, Jacqueline F Webb

{"title":"Photophores in Stomiiform Fishes: Morphology, Distribution, and Putative Behavioral Roles.","authors":"Ashley N Marranzino, Jacqueline F Webb","doi":"10.1086/738399","DOIUrl":"https://doi.org/10.1086/738399","url":null,"abstract":"AbstractBioluminescence is a common feature of the fishes inhabiting the dimly lit waters of the deep sea and is thought to play roles in prey attraction, predator avoidance, communication, and counterillumination. Stomiiformes, the most abundant and speciose order of deep-sea fishes, have a stunning variety of bioluminescent organs and tissues. While some of these structures have been well described, others are poorly characterized and rarely discussed in literature. Here we synthesize data in the literature on the four types of photophores found among stomiiforms (complex serial, complex minute, simple pigmented, and simple unpigmented photophores) and assess the size, density, and distribution of the little-known complex minute photophores, in particular, in 31 species in 25 stomiiform genera. The predicted orientation of light emitted from complex serial and minute photophores in 14 species in the stomiid subfamily Stomiinae was inferred from the placement of the lens (through which light is transmitted). Complex minute photophores were found, in addition to complex serial photophores, in all stomiines examined (and in one gonostomatid) and were notably smaller and occurred in higher densities than the complex serial photophores. The predicted ventral orientation of the light emitted by the complex serial photophores in all species presumably functions in counterillumination. However, the predicted direction of transmission of light produced by complex minute photophores appears to vary within and among species, suggesting multiple functions (e.g., camouflage and/or communication), warranting further studies of photophores in these intriguing and ecologically critical fishes.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"247 2-3","pages":"101-117"},"PeriodicalIF":1.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145795581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Sea Urchin Larvae (Strongylocentrotus purpuratus) Select and Maintain a Unique Microbiome Compared to Environmental Sources. 与环境来源相比，海胆幼虫（strongylocentrrotus purpuratus）选择和维持独特的微生物群。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2024-08-01 Epub Date: 2025-08-18 DOI: 10.1086/736931

Karina Brocco French, Michelle J Herrera, Donovan P German

{"title":"Sea Urchin Larvae (Strongylocentrotus purpuratus) Select and Maintain a Unique Microbiome Compared to Environmental Sources.","authors":"Karina Brocco French, Michelle J Herrera, Donovan P German","doi":"10.1086/736931","DOIUrl":"https://doi.org/10.1086/736931","url":null,"abstract":"AbstractMany organisms may rely on microbes that seed the host body and are typically maintained as a consortial symbiosis. Marine invertebrates have highly diverse microbiomes and offer many different life history traits across which to explore the members and functions of these symbionts but are largely absent from the holobiont and microbiome literature compared to humans and vertebrates. We tracked the microbiome of Strongylocentrotus purpuratus larvae and examined the role of vertical transmission via gametes and the role of horizontal transmission via diet and seawater for seeding the developing larvae with microbes potentially critical to holobiont health and fitness. We used 16S short-read sequencing to track the composition and relative abundances of bacteria associated with diet (microalgae) and with habitat (filtered seawater), as well as with S. purpuratus gametes and larvae under standard lab rearing conditions. The larval microbiome differed across developmental stages and between filtered seawater and algae, and specific bacterial taxa were associated with those differences. In this experiment, developing larvae selected and maintained a unique microbiome compared to their diet and habitat. Eggs were a potentially significant source of vertical transmission during embryonic development (genus Psychromonas), while horizontal transmission via filtered seawater was the main contributor to larval feeding stages, suggesting that filtered seawater is likely the most important source of potential symbionts. Gaining new insights into how marine invertebrate larval microbiomes are seeded and with what taxa is important for endangered-species aquaculture and for ecosystem restoration and management to protect inoculation sources for early-life stage organisms.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"247 1","pages":"56-73"},"PeriodicalIF":1.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145082528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Teratogenic Effects of Larval Low-Salinity Experience in Development of the Juvenile Body in Acanthaster sp. 低盐度经历对棘鱼幼体发育的致畸作用。

IF 1.9 4区生物学

Biological Bulletin Pub Date : 2024-08-01 Epub Date: 2025-07-21 DOI: 10.1086/736498

Matthew Clements, Paulina Selvakumaraswamy, Ronan Hill, Maria Byrne

{"title":"Teratogenic Effects of Larval Low-Salinity Experience in Development of the Juvenile Body in Acanthaster sp.","authors":"Matthew Clements, Paulina Selvakumaraswamy, Ronan Hill, Maria Byrne","doi":"10.1086/736498","DOIUrl":"https://doi.org/10.1086/736498","url":null,"abstract":"AbstractMetamorphosis appears to be a particularly sensitive stage in marine invertebrate development, with potential carryover effects of larval experience on the postlarval stage. We investigated the impact of salinity exposure history (22‰-34‰) for 2-4 days on the ability of competent crown-of-thorns sea star (Acanthaster sp.; CoTS) brachiolaria larvae to form a normal five-armed juvenile. The decreased salinity levels used were commensurate with levels that these larvae may encounter in their habitat on the Great Barrier Reef (25‰-34‰), and the extreme low level (22‰) was used to assess salinity tolerance. At metamorphosis, low-salinity stress (<34‰) for a few days prior to settlement-as may be experienced by larvae during a runoff pulse-resulted in negative carryover effects, even when the larvae were placed in control salinity during settlement assays. A larval experience of ≤30‰ resulted in smaller juveniles. The low-salinity treatment (22‰) resulted in a large proportion of juveniles deviating from the normal five-armed profile of newly metamorphosed CoTS. Juvenile mortality was high if they were generated from larvae exposed to 22‰ and 25‰ salinity levels. Our findings highlight the importance of ecological developmental biology in understanding potential carryover effects beyond metamorphosis. These insights could help link the exposure of CoTS larvae to terrestrial runoff conditions with juvenile performance and the postmetamorphic processes that influence recruitment into the adult population.","PeriodicalId":55376,"journal":{"name":"Biological Bulletin","volume":"247 1","pages":"1-13"},"PeriodicalIF":1.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145082461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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