Acta Zoologica最新文献_第3页

Suitability of emu (Dromaius novaehollandiae) eggs for in ovo imaging research as an alternative to conventional animal model: First experience and non-invasive investigation of physiological embryonal development on computed tomography 鸸鹋（Dromaius novaehollandiae）蛋作为传统动物模型的替代品，在卵内成像研究中的适用性：首次经验和计算机断层扫描对胚胎生理发育的非侵入性研究

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2024-02-16 DOI: 10.1111/azo.12495

Olga Perkas, Marta Pomraenke, Julia Greiser, Veronika Porwoll, Steffen Wiegand, Christian Kuehnel, Thomas Winkens, Martin Freesmeyer

{"title":"Suitability of emu (Dromaius novaehollandiae) eggs for in ovo imaging research as an alternative to conventional animal model: First experience and non-invasive investigation of physiological embryonal development on computed tomography","authors":"Olga Perkas, Marta Pomraenke, Julia Greiser, Veronika Porwoll, Steffen Wiegand, Christian Kuehnel, Thomas Winkens, Martin Freesmeyer","doi":"10.1111/azo.12495","DOIUrl":"https://doi.org/10.1111/azo.12495","url":null,"abstract":"Fertilized bird eggs are an alternative model to conventional animal testing. In recent studies, a preclinical imaging model based on large ostrich eggs was introduced in a clinical research centre using imaging systems designed for humans, thus bypassing the need for dedicated small animal imaging systems. Ostrich eggs are only laid during the season with increased daylength, which limits its year-round availability. The current study focuses on large emu eggs instead of ostrich eggs and aims at investigating its suitability for preclinical imaging research. Physiological development of emu embryos was observed by serial weightings and serial CT scans until developmental day (DD) 46. Differences between fertilized a non-fertilized eggs were analysed. In fertilized eggs, the embryo was identified on CT scans as early as DD 13. As expected, CT scans showed continuous embryonal development and growth over time, comparable to ostriches. Neither the eggs' volume and weight nor the weight loss nor the radiodensity provided significant differences between fertilized and non-fertilized eggs. Despite inferior incubation success in emus compared to ostriches, suitability of emu eggs for artificial incubation and subsequent research was confirmed. Hence, emu eggs represent an alternative model for preclinical imaging and allow a year-round use for research purposes if combined with ostrich eggs.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139923668","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 ecological drivers of variation in pectoral girdle anatomy in frogs 蛙类胸腰解剖结构变异的生态驱动因素

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2024-01-29 DOI: 10.1111/azo.12494

Mónica Carina Soliz, Virginia Abdala, María José Tulli

{"title":"The ecological drivers of variation in pectoral girdle anatomy in frogs","authors":"Mónica Carina Soliz, Virginia Abdala, María José Tulli","doi":"10.1111/azo.12494","DOIUrl":"https://doi.org/10.1111/azo.12494","url":null,"abstract":"In this ecomorphological study, we investigate how the ventral pectoral girdle morphology of anurans correlates with their locomotor modes, habitat preferences, and phylogenetic relationships. We analysed 18 morphometric variables of the pectoral girdle's ventral region across 19 anuran species, encompassing diverse locomotion modes (jumping, hopping, walking, and swimming) and habitats (arboreal, bushy, terrestrial, and aquatic). Our findings, predominantly explained by the Ornstein–Uhlenbeck model, reveal evolutionary adaptations in pectoral girdle morphology driven by habitat-specific demands. Notably, bushy and walker-jumper species exhibit large clavicles, coracoids, and sternums, along with a broad medial pectoral girdle and bigger epicoracoid. Terrestrial and arboreal- jumpers have a larger omosternum area compared to predominantly swimming species. Arboreal walkers show shorter epicoracoid horns and narrower coracoids. Interestingly, bushy and terrestrial species have a higher proportion of bone tissue in their pectoral girdles. This indicates a potential adaptation to support the additional to adaptation to participate in shock absorption. The patterns recovered underscore the intricate relationship between anatomical evolution and environmental adaptation in anurans.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139646869","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 and scanning electron imaging confirm sexual dimorphism in scales and anal-fin rays of the genera Anatolichthys and Paraphanius (Teleostei: Cyprinodontiformes: Aphaniidae) 光成像和扫描电子显微镜确认鲤形目和鹦嘴鱼属的鳞片和臀鳍条存在性二态性（远洋鱼类：鲤形目：鹦嘴鱼科）

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2024-01-23 DOI: 10.1111/azo.12493

Sevil Sungur, Hamid Reza Esmaeili, Sorour Echreshavi, Erdoğan Çiçek

{"title":"Light and scanning electron imaging confirm sexual dimorphism in scales and anal-fin rays of the genera Anatolichthys and Paraphanius (Teleostei: Cyprinodontiformes: Aphaniidae)","authors":"Sevil Sungur, Hamid Reza Esmaeili, Sorour Echreshavi, Erdoğan Çiçek","doi":"10.1111/azo.12493","DOIUrl":"https://doi.org/10.1111/azo.12493","url":null,"abstract":"The investigation of secondary sexual dimorphism is a significant and exciting research topic since it has to do with sexual selection, which is connected to selecting a mate and male competitiveness. The purpose of this study was to investigate the microscopic characteristics of scales in several body parts and anal-fin rays of nine species of the old world cyprinodontiform fishes belonging to the genera Anatolichthys and Paraphanius to find out possible secondary sexual dimorphic traits and their importance in aphaniid taxonomy. Both light and scanning microscopy revealed that scales show general characteristics of aphaniid species and present large cycloid scales of several subtype forms including cycloid-true circular, cycloid-chordate, oval-reversed ovoid, polygonal-pentagonal, quadrilateral-square, oval-ovoid and oval-oblong in different body parts of fishes. Both genera had sexual dimorphism: (i) male individuals of all nine investigated species presented contact organs in the forms of ctenus-like structure in the posterior margin of the scales and spicule-like structure in the anal-fin rays; (ii) caudal-fin rays of both sexes lacked contact organs; (iii) the number, position, size and form of contact organs provided a taxonomic signal to identify the two genera; (iv) contact organs can be thought of as functional structures that keep male and female individuals in physical contact during courtship and display behaviour throughout the active phase of reproduction; (v) it can provide evolutionary signals because sexual dimorphism would come from various sexual selection pressures acting on both sexes.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139558276","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

Ontogeny of a threatened freshwater minnow: Implications for conservation 一种濒危淡水小鱼的个体发育：对保护的影响

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2024-01-11 DOI: 10.1111/azo.12492

Evangelia Karageorgou, Yiannis Kapakos, Roberta Barbieri, Leonidas Vardakas, Nafsika Karakatsouli, Eleni Kalogianni

{"title":"Ontogeny of a threatened freshwater minnow: Implications for conservation","authors":"Evangelia Karageorgou, Yiannis Kapakos, Roberta Barbieri, Leonidas Vardakas, Nafsika Karakatsouli, Eleni Kalogianni","doi":"10.1111/azo.12492","DOIUrl":"https://doi.org/10.1111/azo.12492","url":null,"abstract":"Investigating the ontogeny of threatened freshwater fishes is vital for designing future conservation actions that will increase the potential of species' persistence. This study provides a detailed description of the early life stages of a threatened freshwater fish species, the Evrotas minnow Pelasgus laconicus, which occupies aquatic ecosystems with extreme seasonal hydrological variation. The study of the embryonic and juvenile stages was conducted in vivo using light microscopy from eggs obtained from acclimatized wild spawners at 20 ± 1°C. Fertilized eggs were spherical and transparent with a mean diameter of 1.24 ± 0.06 mm and the average length of free embryos at hatching was 3.85 mm NL (notochord length). The main morphological changes observed are related to the absorption of the yolk, the increase and distribution of the melanophores and the sequential development of the fins. In conclusion, the Evrotas minnow was identified as a multiple spawner, exhibiting a protracted reproductive period (March to August), a particularly short egg-hatching period (5–6 days), a short free embryo stage and a rapid onset of exogenous feeding (2 days). The conservation implications of our study, such as safety stock creation, population reintroduction, conservation of fish refugia and breeding habitats and beaver dam analogues, are discussed.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464653","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

Ventral adhesive area in the limbs of walking cuttlefish (paintpot cuttlefish, Ascarosepion tullbergi): An adaptation for stable aquatic locomotion 步行墨鱼（漆锅墨鱼，Ascarosepion tullbergi）四肢的腹侧粘着区：适应稳定的水生运动

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2023-12-21 DOI: 10.1111/azo.12491

Ayano Omura, Haruka Takano, Taketeru Tomita, Tetsuo Yamaguchi, Shin-ichiro Oka

{"title":"Ventral adhesive area in the limbs of walking cuttlefish (paintpot cuttlefish, Ascarosepion tullbergi): An adaptation for stable aquatic locomotion","authors":"Ayano Omura, Haruka Takano, Taketeru Tomita, Tetsuo Yamaguchi, Shin-ichiro Oka","doi":"10.1111/azo.12491","DOIUrl":"10.1111/azo.12491","url":null,"abstract":"Walking is a locomotion mode in which animals move over the ground using their appendages. Walking is observed in both terrestrial and aquatic animals, but the morphology and diversity of appendages in the latter group have been less extensively studied. The present paper reports on the “adhesive areas,” which may represent morphological and physiological adaptations for stable aquatic walking, in the paintpot cuttlefish, Ascarosepion tullbergi. This animal employs arm IV as a forelimb and an ambulatory flap as a hindlimb for walking, resulting in a gait-like manner of movement. The structure of the adhesive area is exclusively located on the ventral skin surface of arm IV and the ambulatory flap, which are in contact with the ground during walking. The “adhesive areas” are characterized by a dense population of adhesive mucus-secreting cells and the development of numerous wrinkles on the surface. These features may enhance the gripping and sticking capacity of the ground-contact area, thus improving walking stability. The use of adhesive areas for walking is a unique feature of A. tullbergi, as other cuttlefish with adhesive areas primarily use them for attaching to substrata in strong currents. Our results contribute to the understanding of the locomotion strategy of cuttlefish.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028647","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

Peering into the unknown world of amphisbaenians (Squamata, Amphisbaenia): A summary of the life history of Amphisbaena alba 窥探两栖类（有鳞类，Amphisbaenia）的未知世界：白双栖动物生活史概述

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2023-12-12 DOI: 10.1111/azo.12490

Carlos Jared, José Duarte de Barros Filho, Simone G. S. Jared, César Alexandre, Pedro Luiz Mailho-Fontana, Selma M. Almeida-Santos, Marta Maria Antoniazzi

{"title":"Peering into the unknown world of amphisbaenians (Squamata, Amphisbaenia): A summary of the life history of Amphisbaena alba","authors":"Carlos Jared, José Duarte de Barros Filho, Simone G. S. Jared, César Alexandre, Pedro Luiz Mailho-Fontana, Selma M. Almeida-Santos, Marta Maria Antoniazzi","doi":"10.1111/azo.12490","DOIUrl":"10.1111/azo.12490","url":null,"abstract":"Capturing data on the life of fossorial vertebrates is difficult since access to the subterranean environment is made unfeasible by its density and opacity. Collecting specimens is only possible through excavation work, causing damage or even death to the specimens. Due to the obstacles of in situ studies, the scarce information comes from reports obtained indirectly, mainly through specimens preserved in museums. Considering the adaptations to fossoriality, investments in studying these groups could be very enlightening since they would contribute enormously to the knowledge of the evolutionary strategies developed throughout the colonisation of the subterranean world. Amphisbaena alba is the species of Amphisbaenia with the broadest geographic distribution in the world. It occupies virtually all countries in South America except for Chile and southern Argentina. This study, carried out over the last 36 years, aims to provide data on the biology and behaviour of A. alba in captivity and in the field. Our main objective is to provide subsidies to expand the knowledge of the life history of this species and, by extension, of amphisbaenians in general.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12490","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138630812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variation in larval traits between closely related species of freshwater prawns (Macrobrachium amazonicum and M. pantanalense) 近缘淡水对虾(亚马逊沼虾和潘氏沼虾)幼虫性状的差异

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2023-12-03 DOI: 10.1111/azo.12489

Caio Santos Nogueira, Rogerio Caetano Costa, João Alberto Farinelli Pantaleão

{"title":"Variation in larval traits between closely related species of freshwater prawns (Macrobrachium amazonicum and M. pantanalense)","authors":"Caio Santos Nogueira, Rogerio Caetano Costa, João Alberto Farinelli Pantaleão","doi":"10.1111/azo.12489","DOIUrl":"10.1111/azo.12489","url":null,"abstract":"Larval morphology is a valuable tool for understanding the life history of decapod crustaceans. This approach has proven valuable in confirming taxonomic revisions based on molecular or adult morphology analyses. Therefore, the present study aimed to compare larval traits (e.g. development time, morphology, and larval size) between Macrobrachium amazonicum and M. pantanalense, two closely related species that are separated by a low genetic distance. The first five zoeal stages of each phenotype and species were analysed. Differences in larval development time, morphology, and size were observed. M. amazonicum exhibits faster development during the early larval stages compared to M. pantanalense. The main morphological difference between the two species is related to the stage at which pereiopod five develops as a functional appendage, namely zoea IV in M. amazonicum and zoea III in M. pantanalense. In addition, size variation was observed, with M. pantanalense larvae being larger in the early stages. The differences found between the two species corroborate that M. amazonicum and M. pantanalense are distinct lineages. Even though these groups are separated by a low genetic distance, the existing differences are conclusive, and therefore, these organisms can be considered as two distinct taxonomic entities.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543749","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

When pink is a question: Comparative gross and microscopic skin structure analyses reveal the histological basis of skin colour in Galápagos pink land iguanas (Conolophus marthae) 当粉红色是一个问题:比较肉眼和显微镜下的皮肤结构分析揭示了Galápagos粉红地鬣蜥(Conolophus marthae)皮肤颜色的组织学基础

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2023-11-23 DOI: 10.1111/azo.12488

Gregory A. Lewbart, Giuliano Colosimo, Christopher Gaudette, Tatiane T. Negrão Watanabe, Joshua Parker, Christian Sevilla, Glenn P. Gerber, Gabriele Gentile

{"title":"When pink is a question: Comparative gross and microscopic skin structure analyses reveal the histological basis of skin colour in Galápagos pink land iguanas (Conolophus marthae)","authors":"Gregory A. Lewbart, Giuliano Colosimo, Christopher Gaudette, Tatiane T. Negrão Watanabe, Joshua Parker, Christian Sevilla, Glenn P. Gerber, Gabriele Gentile","doi":"10.1111/azo.12488","DOIUrl":"10.1111/azo.12488","url":null,"abstract":"One of the rarest and most unusual iguanas on the planet is the Galápagos pink land iguana (Conolophus marthae). There have been a number of hypotheses on the source of their pink coloration, including that the colour is from blood and a relative lack of dermal pigmentation. We obtained full thickness skin biopsies of three species and compared tissue from darkly pigmented areas and lightly pigmented surfaces. “Pink” areas of pink iguanas are devoid of pigment cells (e.g. melanophores) and the dermal tissue is rich with aggregates of confluent capillaries. This was in sharp contrast to the minimally vascular (only capillaries were observed) dermal areas of the marine and yellow iguanas. The dermal stratum laxum of every biopsy site contained melanophores except for the pink skin of pink iguanas. Interestingly, marine iguanas have a much thicker epidermal stratum germinativum/granulosum, between 2 and 10 cells thick depending on location, compared to the thinner epidermal stratum germinativum/granulosum of land iguanas (one to three cells thick with most areas possessing just one or two cell layers). These microscopic differences might reflect differences in habitat and ecology of the three species.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12488","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138537017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morpho-ecospaces, or how to measure biodiversity in a different way 形态-生态空间，或如何以不同方式衡量生物多样性

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2023-11-05 DOI: 10.1111/azo.12486

Joachim T. Haug, Viktor Baranov, Florian Braig, Carolin Haug

{"title":"Morpho-ecospaces, or how to measure biodiversity in a different way","authors":"Joachim T. Haug, Viktor Baranov, Florian Braig, Carolin Haug","doi":"10.1111/azo.12486","DOIUrl":"10.1111/azo.12486","url":null,"abstract":"The current biodiversity crisis warrants accurate measuring of biodiversity, often achieved by counting species or higher taxonomic units, with morphological or molecular methods. Alternatively, trait-centred approaches categorise organisms into distinct ecological roles and then count the number of occupied roles to measure biodiversity. Even combinations of trait-based and taxonomic approaches are utilised. However, when investigating the theoretical aspects, all these approaches have significant shortcomings, which complicate a reliable biodiversity measurement, that is, the ignorance of polymorphic species, the sensitivity to the initial classification or the knowledge gap concerning the ecology of the organisms. We outline a non-discrete ecospace approach for which neither pronounced taxonomic expertise nor in-depth knowledge about the ecology of the organisms is required. A morphospace based on quantitative morphological properties is used as a proxy for an ecospace, thus resulting in a continuous morpho-ecospace. With this, decision-making concerning taxonomy or ecology is reduced, as morphology is directly used instead of being first interpreted. Differences usually not considered due to polymorphism or ontogeny can be included in this approach, as well as fossils without species determination. This morpho-ecospace approach is easily applicable and can be combined with already existing approaches, making it broadly applicable.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135725559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regeneration and regengrow in multicellular animals derive from the presence of processes of organ metamorphosis and continuous growth in their life cycles 多细胞动物的再生和再生长源于其生命周期中存在的器官变态和持续生长过程

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2023-10-29 DOI: 10.1111/azo.12487

Lorenzo Alibardi

{"title":"Regeneration and regengrow in multicellular animals derive from the presence of processes of organ metamorphosis and continuous growth in their life cycles","authors":"Lorenzo Alibardi","doi":"10.1111/azo.12487","DOIUrl":"10.1111/azo.12487","url":null,"abstract":"The present review formulates an evolutionary hypothesis on the distribution of regeneration in invertebrates and vertebrates. Regeneration is a basal ancestral property of animals living in aqueous environment where life was generated. The specific life cycles that evolved in each phylum indicate that only adult aquatic animals with asexual reproduction, larval stages and metamorphosis, possess broad regenerative abilities, protostomes or deuterostomes. Regeneration derives from the re-utilization in different forms of numerous developmental gene pathways active during development and the transitional phases of larval metamorphosis. An injured adult animal, composed of differentiated tissues, cannot repeat the same sequence of gene activation of embryogenesis, resulting in a variable regeneration (most aquatic invertebrates and anamiotes). In contrast, species with a genome that is not programmed for producing larvae and intense metamorphosis, mainly terrestrial (numerous nematodes, arthropods and amniotes), cannot regenerate their organs after injury. It is hypothesized that during the evolution of terrestrial animals, they lost genes involved in regeneration so that they repair by wound healing associated with grow (regengrow) or by scarring. Future molecular knowledge on developmental pathways that evolved in regenerating competent animals will tell us whether or not organ regeneration in regenerative incompetent animals will be feasible.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136134687","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