Zoological Studies最新文献

{"title":"Morphological Description and Molecular Characterisation of <i>Glyptothoa</i> gen. nov., a Fish Parasitic Deep-sea Cymothoid (Crustacea: Isopoda) from the Indian Ocean, with Four Species, Including One New Species.","authors":"Ameri Kottarathil Helna, Panakkool Thamban Aneesh, Appukuttannair Biju Kumar, Susumu Ohtsuka","doi":"10.6620/ZS.2023.62-51","DOIUrl":"10.6620/ZS.2023.62-51","url":null,"abstract":"<p><p><i>Glyptothoa sagara</i> gen. and sp. nov. is described from the host fish <i>Glyptophidium macropus</i> Alcock, 1894 (Ophidiidae), at depths 300 to 650 metres from the southwest coast of India. The mitochondrial cytochrome <i>c</i> oxidase subunit I (<i>COI</i>) gene of the species was sequenced and compared with other closely related branchial cymothoid genera. Both morphological and molecular data corroborate the inclusion of this parasitic isopod as a new genus, and we describe <i>Glyptothoa sagara</i> gen. and sp. nov. The following combinations of characters characterise the genus: cephalon immersed in pereonite 1; dorsum vaulted; all coxae visible in dorsal view; coxae shorter than or as long as pereonites; pereonites 4-7 slightly decrease in width towards one side, slightly asymmetrical, lateral margins slightly constricted, in hunched side; relatively wide pleon, with large lateral gaps between pleonites; antennula narrowly separated by rostrum, slender, shorter than antenna; antenna with 13 articles, buccal cone obscuring antennal bases; brood pouch arising from coxae 1-4, 6; oostegite 1 bilobed; pleopods rami all simple, without proximomedial lamellar lobe, without folds or thickened ridges. The adult life stages, such as females (ovigerous and non-ovigerous), males and transitional stage of the new species are described. The species is currently known only from the type locality and the type host. The ecological remarks of the newly described taxon are also provided. The following species are transferred from <i>Elthusa</i> Schioedte and Meinert, 1884: <i>Glyptothoa myripristae</i> (Bruce, 1990) comb. nov., <i>Glyptothoa propinqua</i> (Richardson, 1904) comb. nov. and <i>Glyptothoa caudata</i> (Schioedte and Meinert, 1884) comb. nov.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e51"},"PeriodicalIF":1.6,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138479079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological and Molecular Evidence for the Identity of Two Land Hermit Crabs <i>Coenobita longitarsis</i> De Man, 1902 and <i>C. pseudorugosus</i> Nakasone, 1988 (Crustacea: Decapoda: Anomura: Coenobitidae).","authors":"Hsi-Te Shih, Kai Chang, Félix Adhi Pramono, Maria Celia Machel D Malay","doi":"10.6620/ZS.2023.62-52","DOIUrl":"10.6620/ZS.2023.62-52","url":null,"abstract":"<p><p>Two species of land hermit crabs, <i>Coenobita longitarsis</i> De Man, 1902 and <i>C. pseudorugosus</i> Nakasone, 1988 were described based on female specimens from Maluku, Indonesia and specimens from Cebu, the Philippines, respectively. However, no confirmed records of either species have been reported since their original descriptions. In this study, we examined specimens with typical morphological characters of <i>C. longitarsis</i> from Papua New Guinea and <i>C. pseudorugosus</i> from the Philippines and Indonesia, further supported by the analyses of the DNA barcoding marker, cytochrome oxidase subunit I (<i>COI</i>). The characters of male <i>C. longitarsis</i> are provided for the first time, with coxae of male fifth pereiopods subequal, without sexual tubes developed. Their slender morphology is suggested to be an adaptation to utilize native terrestrial snail shells in inland forests, which may also explain its rarity. <i>Coenobita pseudorugosus</i> is very similar to <i>C. rugosus</i> H. Milne Edwards, 1837, but can be distinguished by the adult sizes, as well as the morphology of sexual tubes of male fifth pereiopods and propodus of left third pereiopod. Morphological variation and the fresh coloration of <i>C. longitarsis</i> and <i>C. pseudorugosus</i> are also provided in this study.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e52"},"PeriodicalIF":1.6,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689199/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138479078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrative Systematics and Biogeography of the Hydrozoans (Leptothecata: Eirenidae) <i>Eirene menoni</i> Kramp, 1953 and <i>Eirene lacteoides</i> Kubota and Horita, 1992 from Japan and China with Comments on Pacific Ocean Distributions.","authors":"Gerald L Crow, Brenden S Holland, Gaku Yamamoto, Shuhei Ikeda, Aya Adachi, Kelley Niide","doi":"10.6620/ZS.2023.62-49","DOIUrl":"10.6620/ZS.2023.62-49","url":null,"abstract":"<p><p>The hydrozoan family Eirenidae is known scientifically for its morphological plasticity and challenges in species identification. We used an integrative taxonomic approach based on morphological, molecular and life history evidence to systematically assess field-collected medusae of <i>Eirene menoni</i> Kramp 1953 and captive raised polyps of both <i>E. menoni</i> and <i>E. lacteoides</i> Kubota and Horita 1992. Following morphological review, we updated the genus description to include the presence of rudimentary bulbs (warts) on the ring canal in at least eight of the 24 valid <i>Eirene</i> species. We propose the potential for the mature <i>E. menoni</i> hydrotheca to develop into a gonotheca. However, this proposal will require additional study for verification. We provide validated distribution records from the Indo-Pacific Ocean for <i>E. menoni</i>,and updated collection records for <i>E. lacteoides</i> from the Yellow and East China Seas, and public aquaria-cultured specimens from Japan and Hawaii, using cytochrome <i>c</i> oxidase I (<i>COI</i>) sequences that we generated and compared with those from GenBank. The <i>COI</i> gene reliably separated four species, each forming a monophyletic clade with strong bootstrap support and low mean intraspecific molecular divergences (≤ 1%) within clades. However, some of the deeper nodes of the tree remained poorly resolved, and our analysis failed to demonstrate monophyly among eirenid genera <i>Eirene</i> and <i>Tima</i>. Our integrative taxonomic approach is essential in confirming species identity within the family Eirenidae and genus <i>Eirene</i>,and we have also identified a likely range expansion of <i>E. lacteoides</i> to Hawaii.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e49"},"PeriodicalIF":1.6,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10641431/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Light Pollution on the Sea Finding Behavior of Green Turtle Hatchlings on Lanyu Island, Taiwan.","authors":"Chih-Hao Yen, Yin-Ting Chan, Yao-Chi Peng, Kuo-Hui Chang, I-Jiunn Cheng","doi":"10.6620/ZS.2023.62-47","DOIUrl":"10.6620/ZS.2023.62-47","url":null,"abstract":"<p><p>octurnal animals use their vision and acute hearing to adapt to the nighttime environment. Light pollution has become a serious problem for nocturnal animals in coastal areas, especially nesting sea turtles and sea turtle hatchlings. Hatchlings use visual clues to find the ocean. However, when the artificial light is stronger than the natural light, hatchlings become either misoriented, disoriented or both. Due to rapid tourism development on Lanyu Island, new sources of light pollution, especially streetlights, pose a serious threat to sea turtle hatchlings. In this study, we used a portable lamp constructed by Liteon Inc. on a circular area of a turtle nesting beach to see how artificial light sources could affect green turtle hatchlings' sea finding behavior. In the experiments, we tested hatchling behavior under different lamp settings (strong or weak light intensity; white or yellow light; lamp shield presence or absence) and moon visibilities (moonlit or moonless). The hatchlings' crawling tracks and locations at the end of the trials were recorded. Results showed that the light intensity had no effect on hatchling sea finding behavior. White light had a stronger impact on hatchling sea finding behavior than yellow light. When the lamp shield was installed on moonlit nights, more hatchings were able to find the sea under both white and yellow lights. Thus, it is recommended that light shields be installed on the streetlights of Lanyu Island in order to protect the sea turtle hatchlings effectively.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e47"},"PeriodicalIF":1.6,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10641428/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Migration Behavior of <i>Anguilla celebesensis</i> Silver Eels within their Tomini Bay Spawning Area.","authors":"Ryotaro Manabe, Takatoshi Higuchi, Shun Watanabe, Fadly Y Tantu, Hagi Y Sugeha, Hiroki Kaneko, Michael J Miller, Seishi Hagihara, Tatsuki Yoshinaga, Augy Syahailatua, Sam Wouthuyzen, Triyanto, Kawilarang W A Masengi, Katsufumi Sato, Jun Aoyama, Katsumi Tsukamoto","doi":"10.6620/ZS.2023.62-46","DOIUrl":"10.6620/ZS.2023.62-46","url":null,"abstract":"<p><p>The tropical Celebes eel, <i>Anguilla celebesensis</i>, has a short migration between its spawning and growth habitats. Its spawning areas were hypothesized to be in Tomini Bay and the Celebes Sea after collecting their small leptocephali. However, there is no information about the silver eel oceanic spawning migration behavior of <i>A. celebesensis</i>. To better understand their short-distance spawning migration behavior, four large female silver eels (Eel 1-4) were equipped with pop-up satellite archival tags (PSATs) and released near the mouth of the Poso River in Tomini Bay of Sulawesi Island on 22 February (Eel 1-3) and 11 March 2010 (Eel 4). All PSATs ascended in Tomini Bay and transmitted their data. Eel 3 and 4 provided clear records of consistent diel vertical migration (DVM: eight days-Eel 3, 13 days-Eel 4) with daytime dives to mean depths of 444.7 m (Eel 3) and 539.0 m (Eel 4), where mean temperatures were 9.1°C (Eel 3) and 7.7°C (Eel 4), and nighttime ascents to mean depths of 132.8 m (Eel 3) and 112.4 m (Eel 4), where mean temperatures were 20.6°C (Eel 3) and 23.4°C (Eel 4). Eel 3 and 4 started to dive to deeper water around nautical dawn and swam up to shallower water around sunset. During nighttime, both eels swam in deeper and colder water during nights with moonlight than during nights without moonlight, and there was a negative linear relationship between experienced water temperatures with the moon in the sky and the lunar age for the eels. The <i>A. celebesensis</i> daily rhythm of DVM behaviors was similar to spawning-migration DVM behaviors of other anguillid species. Essential life history characteristics of <i>A. celebesensis</i> appear to be a short migration between freshwater growth habitat and ocean spawning habitat, and high GSI values with advanced gonadal development in downstream-migrating silver eels.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e46"},"PeriodicalIF":1.6,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10641429/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drainage Network Morphology Influences Population Structure and Gene Flow of the Andean Water Frog <i>Telmatobius pefauri</i> (Anura: Telmatobiidae) of the Atacama Desert, Northern Chile.","authors":"Pablo Fibla, Paola A Sáez, Franco Cruz-Jofré, Marco A Méndez","doi":"10.6620/ZS.2023.62-44","DOIUrl":"10.6620/ZS.2023.62-44","url":null,"abstract":"<p><p>Desert aquatic species tend to show isolated and disconnected populations due to the fragmented nature of their environment; however, the morphology of the hydrographic basins, added to humid climatic conditions, can allow dispersion between populations in a desert environment. The aim of this study was to examine the influence of drainage morphology on the phylogeographic structure and gene flow (using a fragment of the mitochondrial control region and seven microsatellite markers) of an endemic taxon of the Andean Precordillera in the Atacama Desert, the aquatic frog species <i>Telmatobius pefauri</i>. We detected three genetic clusters, one cluster present in the Lluta basin and two clusters in the Azapa basin. The results suggest that the genetic structure of <i>T. pefauri</i> is influenced by the morphology of the drainage network formed by the Lluta and Azapa basins: localities present in the same drainage, Tignamar River, were less differentiated and showed higher gene flow levels among them than to their conspecifics belonging to the other drainage in the same basin, Seco River, and those belonging to the other basin, Lluta basin. Gene flow patterns and genetic structure to populations Atacama Andean aquatic taxa would be influenced by basin morphology, with dispersion being stimulated in dendritic hydrological systems, and eventually by humid climatic (regional) events.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e44"},"PeriodicalIF":1.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628555/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71523105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geographic Distribution and Genetic Structures of the Tideland Snails <i>Pirenella nipponica</i> and <i>P.asiatica</i> in Taiwan and Japan.","authors":"Shintaro Kato, Mizuki Ohta, Hiroaki Fukumori, Te-Hua Hsu, Tin-Yam Chan, Shigeaki Kojima","doi":"10.6620/ZS.2023.62-43","DOIUrl":"10.6620/ZS.2023.62-43","url":null,"abstract":"<p><p>The tideland snails <i>Pirenella</i><i>nipponica</i> and <i>Pirenella</i><i>asiatica</i> are distributed north of the central Ryukyu Islands and in South Ryukyu, respectively, in Japan. To reveal their distribution and genetic characteristics in Taiwan, we sampled <i>Pirenella</i> snails along the western coast of Taiwan Island and analyzed the nucleotide sequences of their mitochondrial DNAs. <i>Pirenella nipponica</i> and <i>P. asiatica</i> inhabit the northern and southern parts of the western coast of Taiwan, respectively, and coexist only in the central part. Taiwanese and Japanese populations of <i>P. asiatica</i> showed significant genetic differentiation. The former showed higher genetic diversity and a larger effective population size than the latter. However, the Taiwanese population of <i>P. nipponica</i> was not genetically deviated from the local Japanese population on Kyushu Island. Both the Taiwan and Kyushu populations of <i>P. nipponica</i> showed significant genetic differences from local populations in other regions of Japan, namely, Honshu Island (the Japanese mainland) and Central Ryukyu. They also showed higher genetic diversity and a larger effective population size than the others. The Taiwanese populations of both species might be part of a large panmictic population with individuals from the Asian continent and Kyushu Island.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e43"},"PeriodicalIF":1.6,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71523106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chromosomal Study on Selected Small Araneomorph Spiders from Brazil, Including the First Records in Palpimanidae and Theridiosomatidae (Araneae, Araneomorphae).","authors":"Débora Duarte Dutra, Antônio Domingos Brescovit, Douglas Araujo","doi":"10.6620/ZS.2023.62-42","DOIUrl":"10.6620/ZS.2023.62-42","url":null,"abstract":"Among the 50,474 spider species, only 849 have chromosomal data available in the literature. Fifty spider families remain unknown from a cytogenetic perspective. The aim of this study was to analyze chromosomally selected araneomorph spiders from Brazil, to contribute to the cytotaxonomy and chromosome evolution of this group. The karyotypes of 12 species belonging to families Corinnidae, Linyphiidae, Oonopidae, Palpimanidae, Theridiidae, Theridiosomatidae, Trachelidae, and Zodariidae were analyzed, including the first chromosomal record for the first two families. Specimens (with the abdomen content partially exposed by perforation) were subjected to colchicine, hypotonization, and fixation. In most cases, the total content of the abdomen was used to prepare slides by spreading of cell suspension and subsequent Giemsa staining. The results were as follows: Cinetomorpha simplex Simon, 1892 (Oonopidae) 2n♂ = 9, X0; Neotrops sp. and Neoxyphinus termitophilus (Oonopidae), 2n♂ = 7, X0; Otiothops birabeni (Palpimanidae); Agyneta sp. (Linyphiidae), 2n♂ = 24, X1X20; Coleosoma floridanum, Thymoites sp.1 and Thymoites sp.2 (Theridiidae), 2n♂ = 22, X1X20; Naatlo sp. (Theridiosomatidae), 2n♂ = 30, X1X20; Orthobula sp. (Trachelidae) 2n♂ = 21, X0; Falconina sp. (Corinnidae), 2n♂ = 28, X1X20; Epicratinus sp. (Zodariidae) 2n♂ = 42, X1X20. The chromosomal morphology was determined for all the samples except for Oonopidae. Most species exhibited telocentric chromosomes, with the exception of Palpimanidae and Theridiosomatidae. The main findings: 1) support an hypothesis on ancestral karyotype of Zodariidae and Oonopidae; 2) reveal a relatively high chromosome number in Palpimanidae that supports an idea on relatively high ancestral chromosome number (2n♂ = 42) of entelegyne spiders (Palpimanoidea is sister group of entelegyne spiders); 3) show that the karyotype found in Theridiosomatidae is exceptional within the Araneoidea.","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e42"},"PeriodicalIF":1.6,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628548/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71523095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taxonomic Revision, Morphology and Natural History of the Stick Insect Genus <i>Xerosoma</i> Serville, 1831 (Insecta: Phasmatodea).","authors":"Phillip Watzke Engelking, Victor Morais Ghirotto, Edgar Blois Crispino, Thies H Büscher, Raphael Aquino Heleodoro, Pedro Alvaro Barbosa Aguiar Neves, Pitágoras da Conceição Bispo","doi":"10.6620/ZS.2023.62-31","DOIUrl":"https://doi.org/10.6620/ZS.2023.62-31","url":null,"abstract":"<p><p>Stick insects (Phasmatodea) are quite diverse in the Neotropical region. Among them, <i>Xerosoma</i> Serville belongs to Pseudophasmatidae and comprises winged, roughly brownish phasmids that resemble bark or dry branches and inhabit the Atlantic Forest in Brazil. In this study, we present a redescription and revision of the genus that include three valid species, <i>Xerosoma canaliculatum</i>, <i>Xerosoma michaelis</i>, and <i>Xerosoma nannospinus</i> sp. nov. <i>Xerosoma senticosum</i> syn. nov. was found to be a junior synonym of <i>X. canaliculatum</i>. We also provide an identification key and geographic records for these three species. Additionally, we present a detailed study on the morphology and natural history of <i>X. canaliculatum</i> with the description of its nymphal stages, egg, male genitalia, ontogeny, oviposition method, life habits, defense mechanisms, mating behavior, and other aspects regarding its biology. The study also highlights the shortcomings related to the classification of Xerosomatinae, since its tribes find themselves without proper characterization and contain heterogeneous genera. We expect to provide a basis for a proper diagnosis of Xerosomatinae and encourage future studies on this group, as there is still much to be discovered about this lineage of Neotropical stick insects.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e31"},"PeriodicalIF":1.6,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658165/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138465512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organismal Responses to Coastal Acidification Informed by Interrelating Erosion, Roundness and Growth of Gastropod Shells.","authors":"David J Marshall, Amira Rashid","doi":"10.6620/ZS.2023.62-41","DOIUrl":"10.6620/ZS.2023.62-41","url":null,"abstract":"<p><p>urrent understanding of how calcifying organisms respond to externally forced oceanic and coastal acidification (OCA) is largely based on short-term, controlled laboratory or mesocosm experiments. Studies on organismal responses to acidification (reduced carbonate saturation and pH) in the wild, where animals simultaneously interact with a range of biotic and abiotic circumstances, are limited in scope and interpretation. The present study aimed to better understand how gastropod shell attributes and their interrelations can inform about responses to coastal acidification. We investigated shell chemical erosion, shell roundness, and growth rate of <i>Planaxis sulcatus</i> snails, which are locally exposed to acidified and non-acidified rocky intertidal water. We tested a new approach to quantifying shell erosion based on the spiral suture length (EI, erosion index) and found that shell erosion mirrored field acidification conditions. Exposure to acidification caused shells to become rounder (width/length). Field growth rate, determined from apertural margin extension of marked and later recaptured snails, was strongly negatively related to both shell erosion and shell roundness. Since different shell attributes are indicative of different relationships-shell erosion is an extrinsic passive marker of acidification, and shell roundness and growth rate are intrinsic performance responders-analyzing their interrelations can imply causation, enhance predictive power, and bolster interpretation confidence. This study contributes to the methodology and interpretation of findings of trait-based field investigations to understand organismal responses to coastal acidification.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"62 ","pages":"e41"},"PeriodicalIF":1.6,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628549/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71523107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}