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Cellular patterning and cyto-architectural organization of the skin of electric catfish (Malapterurus electricus, Siluriformes) with a particular emphasis on its ampullary electroreceptor Zoology (IF 2.0) Pub Date : 2024-03-03 Ahmed A. El-Mansi, Ahmed M. Rady, Esam H. Ibrahim, Eman A. El-Bealy
The functional morphology of the skin of Malapteruridae is presumably evolved to cope with a diversified range of ambient physiological, environmental, and behavioral conditions. Herein, we firstly characterized the microstructures and intriguing patterning of the skin of twelve adult electric catfish (, Malapteruridae) using histological, histochemical, immunofluorescent, and ELISA standard methodology
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Animal bioenergetics: Thermodynamic and kinetic analysis of growth and metabolism of Anguilla anguilla Zoology (IF 2.0) Pub Date : 2024-02-23 Marko E. Popović
Bioenergetics and biothermodynamics are valuable tools in research on growth and metabolic processes of wide range of organisms, including viruses, bacteria, fungi, algae and plants, as is shown by the many publications on this topic in the literature. These studies provide insight into growth and metabolism of individual species, as well as interactions between species, like the virus-host interaction
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Macro- and micro morphology of the olfactory organ of African bonytongue, Heterotis niloticus (Cuvier 1829), compared with other species of the family Osteoglossidae (Teleostei) Zoology (IF 2.0) Pub Date : 2024-02-20 Jakub Dymek, Anna M. Dymek, Michał Kuciel, Krystyna Żuwała
Osteoglossiformes (bonytongue fishes) possess many morphological specializations associated with functions such as airbreathing, feeding, and electroreception. The olfactory organ also varies among species, notably in the family Osteoglossidae. Herein, we describe the olfactory organ of an osteoglossid, to compare it with the olfactory organs of other osteoglossiforms. We demonstrate the presence of
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Intraspecific and interspecific comparison of toxicity of ladybirds (Coleoptera: Coccinellidae) with contrasting colouration Zoology (IF 2.0) Pub Date : 2024-01-20 Muhammad Aslam, Oldřich Nedvěd
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Three different seasonally expressed opsins are present in the brain of the Eared Dove, an opportunist breeder Zoology (IF 2.0) Pub Date : 2024-01-19 Natalia A. Marchese, Maximiliano N. Ríos, Mario E. Guido, Diego J. Valdez
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Cycle of the sexual segment of the kidney: histological insights into the role of the urinary tract in the reproduction of male Notomabuya frenata (Squamata: Scincidae) Zoology (IF 2.0) Pub Date : 2024-01-17 Serena N. Migliore, Renan A. Ramalho, Gabrieli S. Araújo, Selma M. Almeida-Santos
The kidneys of male Squamata have an important reproductive function as some portions of the nephron may undergo hypertrophy, characterizing the sexual segment of the kidney (SSK). Although its function is still not completely understood, it is believed that the secretions produced by the SSK may act in the maintenance of spermatozoa. In this study, we investigated the reproductive biology of males
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The effect of ingested copper on the structural and cytotoxic properties of Steatoda grossa (Theridiidae) spider silk Zoology (IF 2.0) Pub Date : 2024-01-09 Grażyna Wilczek, Kinga Surmiak–Stalmach, Małgorzata Morenc, Aleksandra Niemiec–Cyganek, Magdalena Rost–Roszkowska, Jagna Karcz, Magdalena Skowronek
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Effects of caudal fin size on tail-flip jump performance Zoology (IF 2.0) Pub Date : 2024-01-12 Makenzie R. Reed, Michael R. Minicozzi
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Morphology of the pygidial glands and chemical composition of their secretions in two species of tiger beetles (Carabidae: Cicindelinae) Zoology (IF 2.0) Pub Date : 2024-01-03 Sofija Vranić, Nikola Vesović, Lana Antonijević, Aleksandar Vlajić, Marina Todosijević, Danica Pavlović, Dejan Pantelić, Srećko Ćurčić, Ljubodrag Vujisić
Pygidial glands are a common feature of all adephagans and their products play an important role in defense against predators. The morphology of the pygidial glands and the chemistry of their secretion were studied for the first time in two species of tiger beetles – Cicindela (Cicindela) sylvicola Dejean, 1822 and Cylindera (Cylindera) germanica (Linnaeus, 1758). The glands were examined by both bright-field
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Using teacher-student neural networks based on knowledge distillation to detect anomalous samples in the otolith images Zoology (IF 2.0) Pub Date : 2023-11-07 Yuwen Chen, Guoping Zhu
Otoliths are small calcium carbonate structures found in the inner ear of fish and they, as one of important information carriers, are applied in diverse ecological fields. Otoliths are usually photographed and used to explore many unsolved biological and ecological questions. However, many anomalies may occur in the large volume of otolith image data due to natural or artificial consequences, which
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Metabolic rates in female guinea pigs during different reproductive stages Zoology (IF 2.0) Pub Date : 2023-10-31 Matthias Nemeth, Bettina Meidlinger, Elisabeth Barnreiter, Bernard Wallner, Eva Millesi
Reproduction in female mammals is characterized by major changes in steroid hormone concentrations, which can be linked to fluctuations in energy expenditure (EE). Estradiol and cortisol can increase EE and metabolic rates (MRs), but knowledge on MR changes during the estrous cycle and gestation is scarce for many species. This also applies to the domestic guinea pig, a species exhibiting an exceptional
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Ontogenetic dynamics of the nudibranch epithelium in Onchidoris muricata (O.F. Müller, 1776) Zoology (IF 2.0) Pub Date : 2023-11-04 Ekaterina Nikitenko, Elena Vortsepneva
The integumentary system is the set of organs forming the outermost layer of an animal's body. It comprises the epithelium, muscles, and elements of connective and nerve tissue. The integument acts as a physical barrier between the external environment and the internal environment that serves to protect and maintain the body of the animal. The body of nudibranch mollusks undergo significant changes
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Secretory oviducts contribute to the high egg-laying rate of physogastric termite queens (Isoptera: Termitidae) Zoology (IF 2.0) Pub Date : 2023-10-29 Ana Maria Costa-Leonardo, Vanelize Janei, Iago Bueno da Silva
Physogastric termite queens are characterized by a notorious enlargement of the abdomen triggered by an equal development of the ovaries. Other physogastry-related modifications have been reported on the fat body, cuticle, midgut, tracheal system, and hemolymph. Surprisingly, modifications on the lateral oviducts of these females, important sites for ovulation and egg transport, have received little
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Land Ho! Polarized light serves as a visual signal for landward orientation in displaced spiders Zoology (IF 2.0) Pub Date : 2023-10-28 Sidney J. Goedeker, Nettie A. Eigel, Madeline R. Mann, Samantha L. DiBiasio, Brian G. Gall
An organism’s ability to identify goals within their environment, orient towards those goals, and successfully navigate to them are critical to all aspects of survival. Long-jawed orb weavers (Tetragnatha elongata) occupy riparian zones and perform orientation behaviors when displaced from this habitat onto the water. Spiders prefer to move toward the closest shoreline, regardless of release location
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Integrative taxonomy reveals the conspecific status of Xerotricha madritensis (Rambur, 1868) and Helicella candoni Thach, 2018 (Gastropoda, Geomitridae) Zoology (IF 2.0) Pub Date : 2023-09-27 Jonathan P. Miller
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Is the relationship between body length and body mass consistent across habitats? A case study on Niphargus (Crustacea: Amphipoda) Zoology (IF 2.0) Pub Date : 2023-09-09 Ester Premate, Tinkara Kepic, Cene Fišer
Body size is one of the main characteristics of any organism and influences various aspects of individual’s biology. In animal ecology, it represents a key functional trait that can be quantified using different measures and is often used as a proxy for different organismal functions. The way we quantify body size is critical in any study using this measure alone or to scale other organismal traits
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The neuro-exocrine secretion: A new type of gland in tapeworms? Zoology (IF 2.0) Pub Date : 2023-09-04 Natalia M. Biserova, Ivan A. Kutyrev, Vadim R. Saitov, Ivan A. Kolesnikov
The phenomenon of exocrine secretion via nervous cells into the host tissue has been discovered in cestodes. In five cestode species of different orders specialized “cup-shaped” free nerve endings located in the tegument have been found. Their ultrastructure is characterized by the presence of a septate junction, a thin support ring and neurosecretory vesicles 90–110 nm in diameter, which are secreted
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Phylogeography of the true freshwater crab, Geothelphusa dehaani: Detected dual dispersal routes via land and sea Zoology (IF 2.0) Pub Date : 2023-08-23 Masaki Takenaka, Koki Yano, Koji Tojo
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Ovary organization and ultrastructure in six species of Amynthas and Metaphire earthworms (Annelida, Crassiclitellata, Megascolecidae) Zoology (IF 2.0) Pub Date : 2023-08-10 Piotr Świątek, Rojen Singh Thounaojam, Th. Binoy Singh, Samuel James, Łukasz Gajda, Karol Małota, Dominika Raś, Anna Z. Urbisz
Ovaries in earthworms belonging to the family Megascolecidae are paired structures attached to the septum in the anterior part of the XIII segment. They are fan to rosette shaped with numerous rows of growing oocytes, known as egg strings, radiating from the ovary center towards the segmental cavity. The histological and ultrastructural ovary organization in megascolecids and the course of oogenesis
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Cranial asymmetry in odontocetes: a facilitator of sonic exploration? Zoology (IF 2.0) Pub Date : 2023-08-06 Maíra Laeta, João A. Oliveira, Salvatore Siciliano, Olivier Lambert, Frants H. Jensen, Anders Galatius
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Swimming behavior and energy metabolism of the calanoid copepod invader Sinodiaptomus sarsi Zoology (IF 2.0) Pub Date : 2023-07-29 Leonid Svetlichny, Ulrike Obertegger
The appearance of invasive species threatens the integrity of aquatic ecosystems. Much is known about dispersal and introduction mechanisms while little is known on the biological properties of invasive species, such as behavior and energy efficiency, allowing them to successfully colonize new environments and compete with native species. This study examines the functional features of the Asian invasive
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Changes in the activity budget of the fiddler crab Leptuca uruguayensis throughout the reproductive period in temperate estuaries Zoology (IF 2.0) Pub Date : 2023-07-24 Karine Delevati Colpo, Laura M. Reyes Jiménez
Animal reproductive success implies the performance of several behaviours, such as courting, mate searching, copulation, offspring production and care. These behaviours usually have high energetic and ecological costs. Therefore, to maximise their reproductive success, animals should make choices throughout their lives, such as deciding how much energy to invest in different activities, according to
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Effect of parabranchial position on ventilatory pressures in the Pacific spiny dogfish (Squalus suckleyi) Zoology (IF 2.0) Pub Date : 2023-07-28 Sarah Arnette, Jacob Saffarian, Lara Ferry, Stacy Farina
The mechanics of ventilation in elasmobranchs have been described as a two-pump system which is dependent on the generation of differential pressures between the orobranchial and parabranchial cavities. However, this general model does not take into account sources of variation in parabranchial form and function. For example, the relative pressures that drive flow in each parabranchial chamber during
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Differential effect of dehydration on the voluntary activity of a diurnal toad Zoology (IF 2.0) Pub Date : 2023-07-26 María Soledad Gastón, Mauricio Sebastián Akmentins
Anuran amphibians' ability to maintain their activity at high temperatures or low humidity depends on their capacity to face dehydration, especially when they display diurnal and terrestrial life habits. Melanophryniscus rubriventris is a diurnal and terrestrial toad from humid Yungas Andean forests that breeds in temporary ponds. It is exposed to the recurrent risk of dehydration because of pond desiccations
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Reproductive diapause influences spermatogenesis and testes’ size in the diplochronous wolf spider Allocosa senex (Lycosidae, Araneae) – A case study using a non-experimental approach Zoology (IF 2.0) Pub Date : 2023-06-28 Fedra Bollatti, Tim M. Dederichs, Alfredo V. Peretti, Álvaro Laborda, Rodrigo Postiglioni, Anita Aisenberg, Peter Michalik
Seasonality considerably impacts on the life of organisms and leads to numerous evolutionary adaptations. Some species face seasonal changes by entering a diapause during different life stages. During adulthood, a diapause in the non-reproductive period can affect male gametogenesis as, for example, it occurs in insects. Spiders are distributed worldwide and show a variety of life cycles. However,
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Ontogeny of the swim bladder of the Plainfin Midshipman, Porichthys notatus (Percomorphacea: Batrachoidiformes) Zoology (IF 2.0) Pub Date : 2023-06-19 Lorena S. Vieira, Diego F.B. Vaz, Andre L. Netto-Ferreira
The batracoidid Plainfin Midshipmen Porichthys notatus Girard has been extensively studied due to the sound production abilities and specializations of its swim bladder. The present study describes three-dimensional variations of the morphology of the swim bladder and sonic muscles of P. notatus during its post-hatch larval development, with the use of three-dimensional computed tomography. This study
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Corrigendum to “A histochemical and morphological study of the mucus producing pedal gland system in Latia neritoides (Mollusca; Gastropoda; Hygrophila)” [Zoology 156 (2023) 126067] Zoology (IF 2.0) Pub Date : 2023-06-06 Sophie Greistorfer, Janek von Byern, Ingrid Miller, Victor Benno Meyer-Rochow, Robert Farkas, Gerhard Steiner
Abstract not available
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Visualising fat reserves in an insect: A method using X-ray micro-computerised tomography of the Common Wasp (Vespula vulgaris) Zoology (IF 2.0) Pub Date : 2023-04-27 G.D. Bell, N. Corps, D. Mortimer, S. Gretton, N.R. Bury
The Common Wasp, Vespula vulgaris (Hymenoptera: Vespidae), has an annual nest cycle with new colonies initiated by over-wintered queens. Survival of adult queen wasps through winter dormancy is enabled through the deposition of substantial quantities of triglycerides in fat bodies. Worker (and male) wasps lack these fat reserves. By comparing micro-CT scans of workers, pre-hibernation queens and post-hibernation
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Effects of weather and social factors on hormone levels in the European badger (Meles meles) Zoology (IF 2.0) Pub Date : 2023-04-27 NA Sugianto, C. Newman, DW Macdonald, CD Buesching
Animals in the wild continually experience changes in environmental and social conditions, which they respond to with behavioural, physiological and morphological adaptations related to individual phenotypic quality. During unfavourable environmental conditions, reproduction can be traded-off against self-maintenance, mediated through changes in reproductive hormone levels. Using the European badger
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The prokaryotic community of Chondrosia reniformis Nardo, 1847: from diversity to mercury detection Zoology (IF 2.0) Pub Date : 2023-03-22 Camilla Roveta, Barbara Calcinai, Federico Girolametti, Joana Fernandes Couceiro, Stefania Puce, Anna Annibaldi, Rodrigo Costa
Microbial communities inhabiting sponges are known to take part in many metabolic pathways, including nutrient cycles, and possibly also in the bioaccumulation of trace elements (TEs). Here, we used high-throughput, Illumina sequencing of 16S rRNA genes to characterize the prokaryotic communities present in the cortex and choanosome, respectively the external and internal body region of Chondrosia
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Variation in hypodermic radular teeth of the snail auger Hastula cinerea (Born, 1778) (Gastropoda:Terebridae) Zoology (IF 2.0) Pub Date : 2023-03-11 Índira Oliveira da Luz, Alisson Sousa Matos, Cristina de Almeida Rocha-Barreira, Helena Matthews-Cascon
Gastropods of the superfamily Conoidea are present in high diversity in the oceans and are characterized by having modified foregut anatomy and radular morphology. This study provides details on variations in the radula teeth of the species Hastula cinerea, which have hypodermic radula teeth of the toxoglossan type and are part of the Terebridae family – inserted in the Conoidea superfamily. Hastula
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Embryonic-placental relationship in Lagostomus maximus as compared to other hystricognath rodents and eutherian mammals Zoology (IF 2.0) Pub Date : 2023-03-07 Francisco Acuña, Enrique Leo Portiansky, María Angélica Miglino, Mirta Alicia Flamini, Claudio Gustavo Barbeito
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Ovary micromorphology in hormogastrid earthworms with a particular emphasis on the organization of the germline cysts Zoology (IF 2.0) Pub Date : 2023-02-28 Piotr Świątek, Marta Novo, Daniel Fernández Marchán, Łukasz Gajda, Karol Małota, Anna Z. Urbisz
There is a gap in our knowledge of microorganization and the functioning of ovaries in earthworms (Crassiclitellata) and allied taxa. Recent analyses of ovaries in microdriles and leech-like taxa revealed that they are composed of syncytial germline cysts accompanied by somatic cells. Although the pattern of cyst organization is conserved across Clitellata – each cell is connected via one intercellular
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Morphological and physiological traits of the respiratory system in Iguana iguana and other non-avian reptiles Zoology (IF 2.0) Pub Date : 2023-02-22 André Luis da Cruz, Bruno Vilela, Wilfried Klein
Functional morphology considers form and function to be intrinsically related. To understand organismal functions, a detailed knowledge of morphological and physiological traits is necessary. Regarding the respiratory system, the combined knowledge about pulmonary morphology and respiratory physiology is fundamental to understand how animals exchange gases and regulate critical functions to sustain
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Immunolocalization of Pglyrp3 and Eps8l1 proteins in the regenerating lizard epidermis indicates they contribute to epidermal barrier formation Zoology (IF 2.0) Pub Date : 2023-02-21 Lorenzo Alibardi
During tail regeneration in lizards the new corneous layer formed in the regenerating epidermis includes antimicrobial peptides, cystatin and serpins, likely forming an anti-microbial barrier. The present study aims to reveal other proteins potentially contributing to this protective barrier of the epidermis. Using immunohistochemistry we have detected a peptidoglycan-like recognition protein-3 (pglyrp3)
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Get to the point: Claw morphology impacts frictional interactions on rough substrates Zoology (IF 2.0) Pub Date : 2023-02-20 Alexandra M. Pamfilie, Austin M. Garner, Anthony P. Russell, Ali Dhinojwala, Peter H. Niewiarowski
Claws are a common anatomical feature among limbed amniotes and contribute to a variety of functions including prey capture, locomotion, and attachment. Previous studies of both avian and non-avian reptiles have found correlations between habitat use and claw morphology, suggesting that variation in claw shape permits effective functioning in different microhabitats. How, or if, claw morphology influences
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Adapting the pantograph limb: Differential robustness of fore- and hindlimb kinematics against genetically induced perturbation in the neural control networks and its evolutionary implications Zoology (IF 2.0) Pub Date : 2023-02-17 Danny Schnerwitzki, Christoph Englert, Manuela Schmidt
The evolutionary transformation of limb morphology to the four-segmented pantograph of therians is among the milestones of mammalian evolution. But, it is still unknown if changes of the mechanical limb function were accompanied by corresponding changes in development and sensorimotor control. The impressive locomotor performance of mammals leaves no doubt about the high integration of pattern formation
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Narrowing, twisting, and undulating: Complicated movement in shark spiral intestine inferred using ultrasound Zoology (IF 2.0) Pub Date : 2023-02-10 Taketeru Tomita, Kiyomi Murakumo, Rui Matsumoto
Shark intestine presents a complicated three-dimensional morphology, characterized by the development of a coiled internal septum. A basic question regarding the intestine is its movement. This lack of knowledge has prevented the testing of the hypothesis on its functional morphology. The present study, to our knowledge, for the first time, visualized the intestinal movement of three captive sharks
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Photoluminescence in the Garden dormouse (Eliomys quercinus) Zoology (IF 2.0) Pub Date : 2023-02-05 Grete Nummert, Karmel Ritson, Kristel Nemvalts
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A histochemical and morphological study of the mucus producing pedal gland system in Latia neritoides (Mollusca; Gastropoda; Hygrophila) Zoology (IF 2.0) Pub Date : 2022-12-22 Sophie Greistorfer, Janek von Byern, Ingrid Miller, Victor Benno Meyer-Rochow, Robert Farkas, Gerhard Steiner
The freshwater gastropod Latia neritoides is endemic to the streams of New Zealand’s North Island. This species has evolved a unique defence system: it exudes a luminescent mucus thought to deter predators. While the bioluminescence itself has been investigated before, the underlying gland system has remained unstudied and relevant information to understand the defence system has been missing till
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An ecomorphological approach to the relationship between craniomandibular morphology and diet in sigmodontine rodents from central-eastern Argentina Zoology (IF 2.0) Pub Date : 2022-12-15 Sofía Barbero, Pablo Teta, Guillermo Hernán Cassini
The key role of the skull in food intake and processing implicates its morphology should be to some extent adapted to the functional demands present in different diets, while also showing similarities between those which are closely related. Sigmodontine rodents, with a generalist body plan and broad dietary habits, are an interesting case study to explore these relationships. We used linear morphometrics
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Comparative reproductive biology of two sympatric Hypostomus in a Neotropical river Zoology (IF 2.0) Pub Date : 2022-12-07 Rafael Magno Costa Melo, Diego Mendes Ferreira Nunes, Davidson Peruci Moreira, André Alberto Weber, Nilo Bazzoli, Elizete Rizzo
Congeneric species often coexist in sympatry using behavioral and morphological adaptations to reduce competition and interspecific interference, but reproductive patterns behind coexistence remain unknown. We analyzed the gonadal morphology and development, reproductive cycle, and population structure of two sympatric congeneric fishes to evaluate the degree of overlap and differentiation of the reproductive
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Exploring potential drivers of brain size variation in the electric fish Brachyhypopomus occidentalis Zoology (IF 2.0) Pub Date : 2022-11-21 Marangaby Mahamat, Luis F. De León, Mery L. Martínez
Characterizing the factors that shape variation in brain size in natural populations is crucial to understanding the evolution of brain size in animals. Here, we explore how relative brain size and brain allometry vary with drainage, predation risk and sex in natural populations of the electric knifefish Brachyhypopomus occidentalis. Fish were sampled from high and low predation risk sites within two
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Unexpected genetic integrity boosts hope for the conservation of the red-legged partridge (Alectoris rufa, Galliformes) in Italy Zoology (IF 2.0) Pub Date : 2022-11-15 Dalia Tanini, Monica Guerrini, Claudia Vannini, Filippo Barbanera
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Embryonic development timeline in skates (Chondrichthyes: Rajiformes): Sympterygia acuta as the first case study in the family Arhynchobatidae Zoology (IF 2.0) Pub Date : 2022-11-18 Diego M. Vazquez, Cynthia A. Awruch, Luis O. Lucifora, Juan M. Díaz de Astarloa, Ezequiel Mabragaña
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The role of sensory feedback from carpal sinus hairs in locomotor kinematics of rats (Rattus norvegicus, Rodentia) during walking on narrow substrates Zoology (IF 2.0) Pub Date : 2022-10-31 Sandra J. Niederschuh, Julia van Beesel, Manuela Schmidt
Carpal sinus hairs on the forearms are assumed to have evolved within the stem lineage of Theria. The presence and similar position of these specialized tactile hairs in scansorial and terrestrial species as well as earlier studies on rats indicate a biological role in sensing substrate irregularities in high structured environments to ensure the dynamic stability of the body during locomotion. While
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Annual rhythmicity in the switching of reproductive mode in planarians Zoology (IF 2.0) Pub Date : 2022-10-31 Hanae Nodono, Midori Matsumoto
Species of planarians include both asexually reproducing individuals (reproduce through fission and regeneration) and sexually reproducing individuals (hermaphrodites that mate to produce cocoons). While some individuals can switch between the asexual and sexual modes of reproduction. In this study, we examined the reproductive modes and ploidy of Dugesia japonica and Dugesia ryukyuensis from three
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Neuromuscular system of the causative agent of dicrocoeliosis, Dicrocoelium lanceatum. II. Neuropeptide FMRFamide immunoreactivity in nervous system Zoology (IF 2.0) Pub Date : 2022-10-29 Natalia Kreshchenko, Nadezhda Terenina, Natalia Mochalova, Sergey Movsesyan
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Data collected by citizen scientists reveal the role of climate and phylogeny on the frequency of shelter types used by frogs across the Americas Zoology (IF 2.0) Pub Date : 2022-09-14 Lucas Rodriguez Forti, Mariana Retuci Pontes, Guilherme Augusto-Alves, Allana Martins, Fábio Hepp, Judit K. Szabo
Shelters are microhabitats where animals rest and hide. These microhabitats can be used from short daily periods to long-term estivation or hibernation. Environmental conditions and the phenotypical characteristics of the animal drive habitat selection in relation to shelters. Based on this, climate regions and phylogeny are expected to affect the use of different shelter types. Although shelters are
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Changes in thyroid histomorphology and thyroglobulin immunostaining upon exposure to thiourea in Triturus newts Zoology (IF 2.0) Pub Date : 2022-09-08 Maja Ajduković, Tijana Vučić, Milena Cvijanović, Branko Filipović, Branka Šošić-Jurjević
Amphibians are useful bioindicators for monitoring aquatic health and the influence of xenobiotics such as endocrine disrupting chemicals. Because aquatic ecosystems experience the majority of global pollution, aquatic organisms are most exposed and vulnerable to endocrine disruptors. Furthermore, penetration of endocrine disruptors into aquatic organisms especially in amphibians is even easier because
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Morphology and ultrastructure of the Balbiani body in the oocytes of closely related bush cricket species. Shared features reveal important aspect of functioning Zoology (IF 2.0) Pub Date : 2022-09-07 Malgorzata Sekula, Waclaw Tworzydlo, Szczepan M. Bilinski
Balbiani bodies (Bbs) are female germline-specific organelle assemblages usually composed of mitochondria, Golgi complexes, elements of endoplasmic reticulum and accumulations of fine granular material, termed the nuage. Here we present results of morphological and ultrastructural analysis of the Bb of four bush crickets nested in four subfamilies of the family Tettigonidae. This study has revealed
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Morphological comparison of the cranial movement apparatus in mudskippers (Gobiidae: Oxudercinae) Zoology (IF 2.0) Pub Date : 2022-08-19 Loi X. Tran, Thoa T.K. Nguyen, Toan T. Vo
Possession of the neck allows vertebrates to move the head independently from the trunk. Fish do not have the neck and thus the cranial mobility could be limited. Oxudercine gobies show full range of habitat transition from aquatic to terrestrial environments and exhibit flexible cranial movement, yet the cranium-movement apparatus is little known. In this study, we investigated the anatomy of the
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Quantitative analysis of vocalisation types in male common cuckoos’ "gowk" call complex Zoology (IF 2.0) Pub Date : 2022-08-19 Csaba Moskát, Márk E. Hauber
Acoustic communication of animals often contains two types of vocalizations: loud sounds for long-range and soft sounds for short-range signalling. Brood parasitic common cuckoos (Cuculus canorus) are suitable study objects for research on acoustic signalling as they have a simple acoustic repertoire, of which the loud territorial advertisement calls of males, the “cu-coo”, is the most famous type
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Female energy dynamics in the southernmost fiddler crab: Mixed breeding strategy in Leptuca uruguayensis Zoology (IF 2.0) Pub Date : 2022-08-18 Agustina Marciano, Karine Delevati Colpo, Claudia Clementina Boy, Laura Susana López Greco
At the south of its geographical distribution, the fiddler crab Leptuca uruguayensis shows two population spawning events, with more than 65 % of the females being ovigerous. The aim of this study was to assess the energy dynamics in L. uruguayensis females to estimate how they mix the capital and the income breeding strategies in the first and second spawns of the short reproductive season. The relationship