Zoological Studies最新文献

{"title":"Coevolutionary Implications of Obligate Commensalism in Sea Turtles: the Case of the Genus <i>Hyachelia</i> Barnard, 1967 (Crustacea, Amphipoda).","authors":"Tammy Iwasa-Arai, Sónia C S Andrade, Camila Miguel, Silvana G L B Siqueira, Max Rondon Werneck, Fosca P P Leite, Lara Moraes, Marcelo Renan D Santos, Luciana S Medeiros, Uylia H Lopes, Cristiana Serejo","doi":"10.6620/ZS.2023.62-54","DOIUrl":"https://doi.org/10.6620/ZS.2023.62-54","url":null,"abstract":"<p><p>Obligate commensalism in the marine environment and its evolutionary role are still poorly understood. Although sea turtles may serve as ideal substrates for epibionts, within amphipods, only the genus <i>Hyachelia</i> evolved in obligate commensalism with turtles. Here, we report a new host record for <i>Hyachelia lowryi</i> on the hawksbill turtle and describe a larger distribution of the genus in the Atlantic Ocean on green and loggerhead turtles. <i>Hyachelia</i> spp. were sampled from nesting sites of <i>Caretta caretta</i> and feeding grounds of <i>Eretmochelys imbricata</i> and <i>Chelonia mydas</i> along the Brazilian coast. Insights regarding the coevolution of this remarkable genus with its hosts based on molecular analyses are inferred based on mitochondrial (<i>COI</i>) and nuclear (18SrRNA) genes using new and previously available sequences from the infraorder Talitrida. Divergence times for <i>Hyachelia</i> are around the Cretaceous (~127.66 Mya), corresponding to an ancient origin and in agreement with modern green turtle (Chelonioidea) radiation. Later, diversification of <i>Hyachelia</i> species is dated at about 26 Mya, suggesting a coevolutionary association between amphipods and Carettini/Chelonini sea turtles.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11019367/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140859248","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 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":null,"pages":null},"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":null,"pages":null},"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":"Update of the Loggerhead Sea Turtle (<i>Caretta caretta</i>) Population Nesting in Koroni, Greece, Mediterranean.","authors":"Dimitris Margaritoulis, Gonçalo Lourenço, ALan F Rees","doi":"10.6620/ZS.2023.62-50","DOIUrl":"https://doi.org/10.6620/ZS.2023.62-50","url":null,"abstract":"<p><p>Long-term monitoring programs are valuable in assessing population trends and evaluating conservation status especially for threatened species exhibiting delayed maturity such as marine turtles. The loggerhead sea turtle <i>Caretta caretta</i> is a globally distributed species with a regional population within the Mediterranean Sea. Loggerhead nesting in the Mediterranean occurs mainly in the eastern basin, with nesting areas classified as per their magnitude and density. A \"moderate-dense\" nesting area in Greece is the 2.7 km Koroni beach which has been monitored by ARCHELON since 1995 with the aim to collect reproductive data and to protect nests. Data collected over 25 years showed an average annual number of 55.8 nests, a nesting success (percentage of emergences resulting in egg-laying) of 38.0% and a nesting density of 20.7 nests/km. Nest numbers exhibited a significantly increasing trend in recent years, while clutch size showed a significant downward trend. Incubation durations, considered to be an indicator of incubation temperature and subsequently hatchling sex ratio, have been significantly decreasing over the years-a possible sign of global warming. A major threat is nest predation by foxes and dogs, which has been effectively controlled through the fencing of nests. This nesting population, despite its moderate size, may contribute to the genetic homogeneity of the larger western and eastern nesting aggregations of loggerhead turtles in Greece. The nesting beach has been recently included in the European Union's NATURA 2000 network of protected areas. Continuation of this long-term monitoring program is expected to provide further insights into the reproductive traits of this important loggerhead population.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10716592/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138812149","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":null,"pages":null},"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":"Mitophylogeny of Pangasiid Catfishes and its Taxonomic Implications for Pangasiidae and the Suborder Siluroidei.","authors":"Thuy Yen Duong, Linh Thi Khanh Pham, Xuyen Thi Kim Le, Ngoc Tran Thi Nguyen, Azizah Mohd Nor, Thanh Hoa Le","doi":"10.6620/ZS.2023.62-48","DOIUrl":"10.6620/ZS.2023.62-48","url":null,"abstract":"<p><p>Pangasiidae (catfish order: Siluriformes) comprises 30 valid catfish species in four genera: <i>Pangasius</i>, <i>Pangasianodon</i>, <i>Helicophagus</i>, and <i>Pseudolais</i>. Their systematics are frequently revised due to the addition of newly described species. Although Pangasiidae is known to be a monophyletic family, the generic and phylogenetic relationships among the taxa are poorly resolved. This study characterized three newly obtained complete mitogenomes of Mekong River catfishes from Vietnam (<i>Pangasius mekongensis</i>, <i>Pangasius krempfi</i>, and <i>Pangasianodon hypophthalmus</i>), as well as the inter-and intrafamilial relationships of the Pangasiidae and catfish families in Siluroidei. The genomic features of their mitogenomes were similar to those of previously reported pangasiids, including all regulatory elements, extended terminal associated sequences (ETAS), and conserved sequence blocks (CSBs) (CSB-1, CSB-2, CSB-3, and CSBs, A to F) in the control region. A comprehensive phylogeny constructed from datasets of multiple 13 PCG sequences from 117 complete mitogenomes of 32 recognized siluriform families established Pangasiidae as monophyletic and a sister group of Austroglanididae. The [Pangasiidae + Austroglanididae] + (Ictaluridae + Cranoglanididae) + Ariidae] clade is a sister to the \"Big Africa\" major clade of Siluriformes. Furthermore, both phylogenies constructed from the single barcodes (83 partial <i>cox</i>1 and 80 partial <i>cyt</i>B, respectively) clearly indicate genus relationships within Pangasiidae. <i>Pangasianodon</i> was monophyletic and a sister to the (<i>Pangasius</i> + <i>Helicophagus</i> + <i>Pseudolais</i>) group. Within the genus <i>Pangasius</i>, <i>P. mekongensis</i> was placed as a sister taxon to <i>P. pangasius</i>. <i>Pangasius sanitwongsei</i> was found to be related to and grouped with <i>Pangasianodon</i>, but in single-gene phylogenies, it was assigned to the <i>Pangasius + Helicophagus + Pseudolais</i> group<i>.</i> The datasets in this study are useful for studying pangasiid systematics, taxonomy and evolution.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10641430/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592631","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":null,"pages":null},"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":null,"pages":null},"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":"<i>Minuca panema</i> (Coelho, 1972): Resurrection of a Fiddler Crab Species from Brazil Closely Related to <i>Minuca burgersi</i> (Holthuis, 1967) (Crustacea, Decapoda, Brachyura, Ocypodidae).","authors":"Carl L Thurman, Hsi-Te Shih, John C McNamara","doi":"10.6620/ZS.2023.62-45","DOIUrl":"10.6620/ZS.2023.62-45","url":null,"abstract":"<p><p>We redescribe a species of fiddler crab, <i>Minuca panema</i> (Coelho, 1972), from the Atlantic coast of South America. It is closely related to <i>M. mordax</i> (Smith, 1870), and until now, the taxon has been considered to be synonymous with another closely related species <i>Minuca burgersi</i> (Holthuis, 1967). However, we found that two clades of <i>M. burgersi sensu lato</i> were restricted to the Caribbean Basin. This distribution differs from than that of <i>M. panema</i>, which occurs primarily along the eastern coast of South America, ranging from the island of Trinidad to Praia da Armação, Santa Catarina, Brazil. Based on our field studies, the geographical boundary between <i>M. burgersi</i> sensu stricto and <i>M. panema</i> is the Tobago Basin, north of Trinidad. Since the two species diverged only 3 to 4 million years ago, as dated from the phylogeny of the genus <i>Minuca</i> Bott 1954, there are few reliable morphological features that can be used to distinguish them clearly. In live crabs, there is a striking difference in coloration between the cherryred South American <i>M. panema</i> and the rusty-red Caribbean <i>M. burgersi</i> sensu lato. In males, the pattern of tubercles on the inner surface of the major cheliped varies between the two species. In females, the vulva is slightly larger in <i>M. burgersi</i> sensu stricto. Ocean tides and currents together with siltation owing to freshwater outflow from the Amazon and Orinoco rivers most likely have driven the divergence of these species. In the Caribbean, small tidal amplitudes have minimized long-distance gene flow in <i>M. burgersi</i> sensu stricto from isolated insular lagoons. In contrast, large tidal amplitudes and exposed habitats on riverbanks along the eastern Atlantic coast of South America have enabled long-distance dispersal in <i>M. panema</i>. DNA analysis reveals that haplotypes of cytochrome <i>c</i> oxidase subunit 1 are not shared between the species. Since natural selection and/or genetic drift have yet to produce extensive morphological divergences between <i>M. panema</i> and <i>M. burgersi</i> sensu stricto, we speculate that changes in the genes regulating mitochondrial DNA functions have led to speciation at the molecular level. According to the mitonuclear compatibility concept, we propose that mitochondrial DNA may be at the forefront of speciation events and that co-evolved mitonuclear interactions are responsible for some of the earliest genetic incompatibilities arising among isolated populations.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10641435/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592558","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":null,"pages":null},"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}