Journal of experimental zoology. Part A, Ecological and integrative physiology最新文献

{"title":"Nematicidal Potentiality of Four Marine Molluscans' Defensive Secretions From the Red Sea Against Syphacia obvelata (Nematoda: Oxyuridae) In Vitro","authors":"Nahla A. Radwan,&nbsp;Aalaa I. Atlam,&nbsp;Asmaa R. Abdel- Malek,&nbsp;Alaa Y. Moustafa","doi":"10.1002/jez.2877","DOIUrl":"10.1002/jez.2877","url":null,"abstract":"<div>\u0000 \u0000 <p>The continuous requirement to substitute safe and affordable alternatives for helminth medications, as well as address the resistance of some used drug classes, introduced bioactive products derived from marine animals into the field of competition; however, almost all the previous research only focused on their impact on bacterial and protozoal infection. In the present work, we investigated the potential in vitro nematocidal effect of the aqueous extract of defense secretions for four species of marine mollusks: two cephalopods, namely the cuttlefish <i>Sepia pharaonis</i> and the common Octopus <i>Octopus vulagris</i> and two gastropods, the sea hare <i>Aplysia argus</i> and the sea slug <i>Berthillina citrina</i>, against the adult murine pinworm <i>Syphacia obvelata</i>. Data showed dose and time efficacy in all examined extracts. The sea slug's skin acid secretion has the highest impact, causing death in the cultivated worms, followed by the ink of the sea hare, the common octopus and the cuttlefish, where LC90 after 10 h of exposure were 250, 290, 316, and 391 µg/mL, respectively. Comparatively with the control and albendazole-treated groups, the skin acid secretion of the sea slug caused the highest levels of the antioxidant enzymes SOD, Cat and GSH-PX; however, albendazole prompted the highest level of GSH-PX enzyme in all experimental groups.</p></div>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 2","pages":"149-158"},"PeriodicalIF":1.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142545811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetics of Symmetrical Versus Asymmetrical In-Phase Gaits During Arboreal Locomotion","authors":"Andrew R. Lammers,&nbsp;Sarah A. Stakes","doi":"10.1002/jez.2878","DOIUrl":"10.1002/jez.2878","url":null,"abstract":"<p>Quadrupedal animals traveling on arboreal supports change aspects of locomotion to avoid slipping and falls. This study compares locomotor biomechanics in two small mammals: first, the gray short-tailed opossum (<i>Monodelphis domestica</i>) predominantly trots, which is a symmetrical gait. The second species, the Siberian chipmunk (<i>Tamias sibiricus</i>), primarily bounds or half-bounds. Trotting and bounding differ fundamentally in three aspects: location and timing of hand and foot placement; in the way that the trunk bends (trotting, mediolateral bending; bounding, flexion, and extension); and in the dynamics of the center of mass. Both species ran on a flat track and a 2 cm diameter cylindrical track, instrumented with a force plate or pole. For bounding chipmunks, the force pole was modified to measure force only on the right side. We measured speed, duty factor, and force, and calculated vertical, braking, propulsive, and net mediolateral impulses. Vertical and fore-aft impulses were different between trotting opossums and bounding chipmunks, but between trackway types, these impulses were similar within each species. The modifications used by each species to travel on arboreal supports were similar, except in one important respect. Net mediolateral impulse in opossums changed from laterally directed on the flat trackway to medial on the arboreal. But in chipmunks, these impulses on the flat track were medially-directed, and on the arboreal track, the amount of variability was substantially greater. We conclude that chipmunks—and perhaps any bounding animal—are less consistent from stride to stride in their locomotion. This inconsistency requires constant medial and lateral impulses to correct their trajectory when traveling on arboreal surfaces.</p>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 2","pages":"159-171"},"PeriodicalIF":1.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jez.2878","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142521971","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":"Metabolic Compensation Associated With Digestion in Response to the Latitudinal Thermal Environment Across Populations of the Prairie Lizard (Sceloporus consobrinus)","authors":"Benjamin D. Haussmann,&nbsp;Tiffany R. Hegdahl,&nbsp;Travis R. Robbins","doi":"10.1002/jez.2876","DOIUrl":"10.1002/jez.2876","url":null,"abstract":"<p>Environmental temperatures directly affect physiological rates in ectotherms by constraining the possible body temperatures they can achieve, with physiological processes slowing as temperatures decrease and accelerating as temperatures increase. As environmental constraints increase, as they do northward along the latitudinal thermal gradient, organisms must adapt to compensate for the slower physiological processes or decreased opportunity time. Evolving faster general metabolic rates is one adaptive response posited by the metabolic cold adaptation (MCA) hypothesis. Here we test the MCA hypothesis by examining metabolism of prairie lizard populations across the latitudinal thermal gradient. Our results show that populations from cooler environments have higher standard metabolic rates (SMRs), but these are explained by associated larger body sizes. However, metabolic rates of fed, postprandial individuals (MR_Fed) and metabolic energy allocated to digestion (MR_Δ) were highest in the population from the coldest environment after accounting for the effect of body size. Our results suggest cold-adapted populations compensate for lower temperatures and shorter activity periods by increasing metabolic rates associated with physiological processes and thus support the MCA hypothesis. When examining energy expenditure, metabolic rates of individuals in a postprandial state (MR_Fed) may be more ecologically relevant than those in a postabsorptive state (SMR) and give a better picture of energy use in ectotherm populations.</p>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 2","pages":"139-148"},"PeriodicalIF":1.9,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jez.2876","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142501643","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":"Functional Morphology of the Tongue and Laryngeal Entrance and Scanning Electron Microscopic Pattern of the Filter Feeding Apparatus of Anas crecca","authors":"Reem S. Alruhaimi,&nbsp;Mohamed M. A. Abumandour,&nbsp;Mohammed Kassab,&nbsp;Ahmed Elnegiry,&nbsp;Foad Farrag,&nbsp;Diaa Massoud,&nbsp;Ayman M. Mahmoud,&nbsp;Bandar H. AL-Osaimi,&nbsp;Hazem Hamoda","doi":"10.1002/jez.2875","DOIUrl":"10.1002/jez.2875","url":null,"abstract":"<div>\u0000 \u0000 <p>There is insufficient information about the migratory Eurasian teal, <i>Anas crecca</i>. The study provides the first anatomical description of lingual adaptations and their relationship with the species-specific feeding behavior of <i>A. crecca</i> collected near Egyptian Lake Nasser. Our investigation was applied with the help of gross, scanning electron microscopy (SEM), and morphometric analysis. The study focused on the feeding filtering apparatus that depends on eight lingual papillae. The spatula-shaped nail is adapted for food particle pecking, while the lingual combs, rostral border of the prominence, unique papillary crest, median groove, and papillary system aid in intra-oral transportation. The feeding apparatus is formed by the lateral and dorsal papillary systems. The lateral papillary system had conical papillae with numerous long filiform and hair-like filiform papillae to constitute the food filtration apparatus, while the dorsal papillary system had ridged-like and rod-like papillae in addition to the small papillae of the papillary crest and spinated border of the root to help in moving the food particles with water to the lateral sides of the prominence. The laryngeal region exhibited papillary (pre-glottic) and non-papillary (glottic) areas. The papillary area had two lateral papillary portions and a median smooth portion, while the non-papillary area had an ovoid laryngeal mound with a median glottic opening that was bordered by a papillary border. The papillary portion had three slightly oblique longitudinal papillary rows.</p></div>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 2","pages":"121-138"},"PeriodicalIF":1.9,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142501642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Density-Dependent Mortality of the Diving Beetle, Rhantus elevatus (Dytiscidae: Coleoptera) Preyed Upon Culex pipiens Larvae: Effects of Prey and Predator Densities","authors":"Ahmed A. Rashed,&nbsp;ElKhateeb. S. Aly,&nbsp;Abadi M. Mashlawi,&nbsp;Mohamed H. Bayoumy","doi":"10.1002/jez.2873","DOIUrl":"10.1002/jez.2873","url":null,"abstract":"<div>\u0000 \u0000 <p>Diving beetles (Coleoptera: Dytiscidae) are general predators that feed primarily on mosquito larvae and can control their populations, but the evidence for such an assumption remains weak. <i>Rhantus elevatus</i> is an important predator of this group distributed in Egypt with both larval and adult stages preying on immature mosquito. For determine predator effectiveness, it is requisite to identify the functional response (<i>a </i>= rate of attack and <i>T</i>_h<i> </i>= time of handling) and searching efficacy (<i>a</i>_t<i> </i>= area of discovery and <i>m </i>= mutual interference) as both correlate with biocontrol efficacy. This study assessed the density-dependent mortality of <i>Culex pipiens</i> larvae by eliciting functional responses of third-instar and adult predators at prey density ranging from 100 to 500 larvae per arena. By contrast, a searching efficacy for the same predator stages was examined at densities ranging from one to five predators per 500 prey. Predation rates of third-instar and adult of <i>R. elevatus</i> were fitted by a model of Type II response with coefficients were: third-instar (<i>a</i> = 0.208 h⁻¹ and <i>T</i>_h = 2413 h) and adult (<i>a</i> = 0.1191 h⁻¹ and <i>T</i>_h = 3723 h). The maximum number of mosquitoes which can be devoured by an individual larva and adult of <i>R. elevatus</i> within 24 h was 99.46 and 64.46 prey, respectively. The area of discovery for the larval stage declined more steeply than the adult stage of the predator as their density increased from one to five individuals, indicating more interference estimated for the larval stage. Considering these characteristics, larvae would seem to be the most effective stage against low mosquito populations due to low predation risk compared to that generated at high predator densities in the same arena from intra-specific interference. Eventually, we suggested a ratio of 1:100 (predator per prey) must be considered in biocontrol plans for mosquitoes.</p></div>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 1","pages":"105-116"},"PeriodicalIF":1.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of Administration Routes in Crayfish: Comparative Analysis of Intracoelomic and Intrapericardial Techniques Using Fluorescein Dye","authors":"Davinder Kaur,&nbsp;Areeba Khan,&nbsp;Jan Kubec,&nbsp;Thomas Breithaupt,&nbsp;Miloš Buřič","doi":"10.1002/jez.2872","DOIUrl":"10.1002/jez.2872","url":null,"abstract":"<div>\u0000 \u0000 <p>Crayfish are emerging as model organisms for various disciplines. Moreover, decapod crustaceans also exhibit pain-like reactions and heightened anxiety when exposed to harmful stimuli, leading to short-term or persistent behavioral shifts. Awareness of decapod crustacean sentience and thus, suffering calls for refinement of current laboratory protocols. This study aims to enhance the standard methodology for injecting substances into crayfish by minimizing stress-inducing manipulation. We examined the impacts of various administration routes on the persistence of injected chemicals in marbled crayfish, its excretion, and animal survival. Fluorescein dye was used as a visual marker. It was administered via three alternative injection routes—intracoelomic (IC), intrapericardial administration through areola (IP-A), and intrapericardial administration through arthrodial membrane (IP-AM). Continuous video observations were made for a 4-h period under UV light, followed by intermittent observations at 12-h intervals over 48 h. The highest mortality (20%) was observed in IP-A administration. The IP-A method also provided the fastest systemic distribution of the dye in the body. Results indicated visibly higher urination frequency in IP-AM compared to IP-A. IC mirrored IP-AM outcomes without any observed mortality. We conclude that IC administration proved superior to intrapericardial methods, offering the least harmful but effective approach for crayfish injections.</p></div>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 1","pages":"95-104"},"PeriodicalIF":1.9,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction to the Special Issue on Comparative Biology of Sleep and Circadian Rhythms","authors":"Noah T. Ashley,&nbsp;John A. Lesku","doi":"10.1002/jez.2869","DOIUrl":"10.1002/jez.2869","url":null,"abstract":"","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"341 10","pages":"1071-1072"},"PeriodicalIF":1.9,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimentally Elevated Levels of Testosterone Advance Daily Onset of Activity in Short-Day Housed Male House Sparrows (Passer domesticus)","authors":"Holland Galante,&nbsp;Samuel J. Lane,&nbsp;Emily K. Elderbrock,&nbsp;Geoffrey Brown,&nbsp;Timothy J. Greives","doi":"10.1002/jez.2871","DOIUrl":"10.1002/jez.2871","url":null,"abstract":"<div>\u0000 \u0000 <p>Seasonal changes in sleep/wake cycles and behaviors related to reproduction often co-occur with seasonal fluctuations in sex hormones. Experimental studies have established that fluctuations in circulating testosterone mediate circadian rhythms. However, most studies are performed under constant lighting conditions and fail to investigate the effects of testosterone on the phenotypic output of circadian rhythms, that is, chronotype (daily activity patterns under light:dark cycles). Here, we experimentally elevated testosterone with implants during short nonbreeding daylengths in male house sparrows (<i>Passer domesticus</i>) to test if observed seasonal changes in chronotype are directly in response to photoperiod or to testosterone. We fitted individuals with accelerometers to track activity across treatment periods. Birds experienced three treatments periods: short day photoperiods before manipulation (SD), followed by testosterone implants while still on short days (SD + T). Implants were then removed. After a decrease in cloacal protuberance size, an indicator of low testosterone levels, birds were then photostimulated on long days (LD). Blood samples were collected at night, when testosterone peaks, to compare testosterone levels to daily onset/offset activity for experimental periods. Our results indicate that experimentally elevated testosterone under short nonbreeding photoperiods significantly advanced daily onset of activity and total daily activity relative to daylength. This suggests that testosterone, independent of photoperiod, is responsible for seasonal shifts in chronotypes and daily activity rhythms. These findings suggest that sex steroid hormone actions regulate timing of daily behaviors, likely coordinating expression of reproductive behaviors to appropriate times of the day.</p></div>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"341 10","pages":"1073-1083"},"PeriodicalIF":1.9,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clock Gene Expression in Eel Retina and Hypothalamus: Response to Photoperiod and Moonlight","authors":"Ji-Yeon Hyeon,&nbsp;Jun-Hwan Byun,&nbsp;Byeong-Hoon Kim,&nbsp;Sachithra Amarin Hettiarachchi,&nbsp;Jeonghoon Han,&nbsp;Young-Ung Choi,&nbsp;Choong-Hwan Noh,&nbsp;Yuki Takeuchi,&nbsp;Soo-Youn Choi,&nbsp;Jong-Eun Park,&nbsp;Sung-Pyo Hur","doi":"10.1002/jez.2870","DOIUrl":"10.1002/jez.2870","url":null,"abstract":"<p>Assessment of the clock genes, Period (<i>Per</i>) 1, <i>Per2</i>, <i>Per3</i>, and Cryptochrome (<i>Cry</i>) 2, <i>Cry3</i>, and <i>Cry4</i>, can help better understand eel spawning ecology. In this study, the circadian rhythm and moonlight effects of these clock genes in the eel retina and hypothalamus were analyzed. We examined clock gene expression patterns under 12 h light:12 h darkness (12L12D), constant darkness (DD), and constant light (LL) conditions; under short photoperiod (SP; 9L15D) and long photoperiod (LP; 15L9D), and during the new moon (NM) and full moon in male eels. <i>Per2</i> expression increased after sunrise, <i>Cry2</i>, and <i>Cry4</i> expression increased around sunset, and <i>Per1</i>, <i>Per3</i>, and <i>Cry3</i> expression increased before sunrise. Under SP conditions, oscillations of retinal <i>Per3</i> and <i>Cry4</i>, which did not occur under LP conditions, were generated. In addition, retinal <i>Cry4</i> oscillation was generated under NM conditions. These results suggest that the retina of the eel may play an important role in regulating circadian rhythm, and migration is initiated by the synchronization of clock genes by moonlight, suggesting that photic signals are closely related to the migratory activity of the eel.</p>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 1","pages":"81-94"},"PeriodicalIF":1.9,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11617817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142391003","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":"Early Oxidative Stress May Prevent a Red Ornament From Signaling Longevity","authors":"A. A. Romero-Haro,&nbsp;A. Cantarero,&nbsp;C. Alonso-Alvarez","doi":"10.1002/jez.2868","DOIUrl":"10.1002/jez.2868","url":null,"abstract":"<p>Harsh early environmental conditions can exert delayed, long-lasting effects on phenotypes, including reproductive traits such as sexual signals. Indeed, adverse early conditions can accelerate development, increasing oxidative stress that may, in turn, impact adult sexual signals. Among signals, colorations produced by red ketocarotenoids seem to depend on mitochondrial functioning. Hence, they could reveal individual cell respiration efficiency. It has been hypothesized that these traits are unfalsifiable “index” signals of condition due to their deep connection to individual metabolism. Since mitochondrial dysfunction is frequently linked to aging, red ketocarotenoid-based ornaments could also be good signals of a critical fitness component: longevity. We tested this red color per longevity correlation in captive zebra finches. In addition, we experimentally decreased the synthesis of glutathione (a critical intracellular antioxidant) during the first days of the birds' life to resemble harsh early environmental conditions (e.g., undernutrition). Longevity was recorded until the death of the last bird (almost 9 years). Males, but not females, exhibiting a redder bill in early adulthood lived longer than males with paler bills, which agrees with some precedent studies. However, such bill redness—longevity connection was absent among males with inhibited glutathione synthesis. These findings may suggest that environmental factors can alter the reliability of red ketocarotenoid-based sexual signals, making them less unfalsifiable than believed.</p>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"343 1","pages":"70-80"},"PeriodicalIF":1.9,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11617810/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347950","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}