Integrative zoology最新文献_第2页

Mounting an immune response reduces male attractiveness in a lizard. 免疫反应会降低蜥蜴雄性的吸引力。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-09-01 DOI: 10.1111/1749-4877.12889

Mar Comas, Francisco J Zamora-Camacho, Jorge Garrido-Bautista, Gregorio Moreno-Rueda, José Martín, Pilar López

{"title":"Mounting an immune response reduces male attractiveness in a lizard.","authors":"Mar Comas, Francisco J Zamora-Camacho, Jorge Garrido-Bautista, Gregorio Moreno-Rueda, José Martín, Pilar López","doi":"10.1111/1749-4877.12889","DOIUrl":"https://doi.org/10.1111/1749-4877.12889","url":null,"abstract":"Parasites impact host fitness and constitute an important selective pressure on the host's life history. According to parasite-mediated sexual selection, ornaments are presumed to honestly indicate immune capacity or resistance against parasites, and the chooser sex (typically females) obtains an advantage by selecting more ornamented, thus more immunocompetent mates. Therefore, signalers mounting an immune response must allocate resources from the sexual signal to the immune system, hence reducing the expression of the ornament and becoming less attractive to the choosing sex. Here, we test this idea in the lizard Psammodromus algirus. We inoculated a subsample of males with lipopolysaccharide (LPS) of the cell wall of Escherichia coli, while others served as sham controls. The inoculation of LPS decreased the proportion of ergosterol (pro-vitamin D2) in femoral secretions, and chemosensory tests showed that the scent of LPS-inoculated males was less attractive to females than the scent of control males. Given that ergosterol is a precursor of vitamin D, which has physiological functions as an immune modulator, immunocompromised males likely needed to divert vitamin D to the immune system, reducing the allocation of ergosterol to secretions. In this way, females could detect \"sick\" males, preferring the apparently healthy males. Overall, our study shows that mounting an immune response is costly in terms of reduced attractiveness. Moreover, we disentangle the underlying mechanism, which involves an honest signal based on vitamin D allocation.","PeriodicalId":13654,"journal":{"name":"Integrative zoology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142107035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Nephila spider male aggregation: preference for optimal female size and web clustering. 尼菲拉蜘蛛雄性聚集：对最佳雌性体型和蜘蛛网集群的偏好。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-09-01 DOI: 10.1111/1749-4877.12896

Matjaž Kuntner, Maj Kuntner, Eva Kuntner, Irena Kuntner, Jana Faganeli Pucer, Erik Štrumbelj, Daiqin Li

{"title":"Nephila spider male aggregation: preference for optimal female size and web clustering.","authors":"Matjaž Kuntner, Maj Kuntner, Eva Kuntner, Irena Kuntner, Jana Faganeli Pucer, Erik Štrumbelj, Daiqin Li","doi":"10.1111/1749-4877.12896","DOIUrl":"https://doi.org/10.1111/1749-4877.12896","url":null,"abstract":"Sexual size dimorphism theory predicts biased operational sex ratios (OSRs) and an uneven distribution of males among certain females. We studied this phenomenon through a field census of the giant wood spider Nephila pilipes (family Nephilidae) in Singapore, a species where females are, on average, 6.9 times larger than males. Specifically, we tested two hypotheses concerning male distribution, given their tendency to aggregate in certain female webs. The optimal female size hypothesis predicts that males would predominantly occupy webs of intermediate-sized females. The web clustering hypothesis posits that more males would be found in webs closer together compared to those farther apart. Our snapshot census revealed a female-biased OSR (females: males = 1.85) with an uneven distribution of males in female webs. Most males were found in webs of intermediate-sized females aligning with the optimal female size hypothesis. Proximity among female webs was indicative of male presence, lending support to the web clustering hypothesis. While our study's limited sample size warrants caution, we conclude that in N. pilipes, male occupation of female webs is facilitated by the clustering of webs, and males prefer to cohabit with optimally sized, receptive females.","PeriodicalId":13654,"journal":{"name":"Integrative zoology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142107036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Lipid storage may help invasive mussels to survive in limited food conditions. 脂质储存可能有助于入侵贻贝在有限的食物条件下生存。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-09-01 DOI: 10.1111/1749-4877.12888

Csilla Balogh, Jarosław Kobak, Zoltán Serfőző

引用次数: 0

Large-scale fossil records analysis reveals prehistoric extinction mechanisms of woolly rhinoceros (Coelodonta antiquitatis). 大规模化石记录分析揭示了毛犀牛（Coelodonta antiquitatis）的史前灭绝机制。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-08-29 DOI: 10.1111/1749-4877.12891

Xiaoling Liang, Weimin Kuang

引用次数: 0

Cospeciation is not the dominant driver of plant-pollinator codiversification in specialized pollination systems. 在专门的授粉系统中，共生并不是植物-授粉者共同多样化的主要驱动力。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-08-28 DOI: 10.1111/1749-4877.12886

Channongxouang Taengon, Ying Feng, Yuanye Zhang, Sasith Tharanga Aluthwattha, Jin Chen, Gang Wang

引用次数: 0

Interpreting the additive components of multi-species distributional aggregation. 解读多物种分布聚合的附加成分。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-08-28 DOI: 10.1111/1749-4877.12885

Zeguang Guo, Xiaoqin Shi, Ziyan Liao, Feng Xie, Youhua Chen

引用次数: 0

Short photoperiod inhibited gonadal growth and elevated hypothalamic Dio3 expression unrelated to promoter DNA methylation in young Brandt's voles. 短光周期抑制了布氏田鼠幼年性腺的生长并提高了下丘脑Dio3的表达，这与启动子DNA甲基化无关。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-08-23 DOI: 10.1111/1749-4877.12884

Yanting Qiao, Ning Li, Ying Song, Xiaohui Liu, Dawei Wang

{"title":"Short photoperiod inhibited gonadal growth and elevated hypothalamic Dio3 expression unrelated to promoter DNA methylation in young Brandt's voles.","authors":"Yanting Qiao, Ning Li, Ying Song, Xiaohui Liu, Dawei Wang","doi":"10.1111/1749-4877.12884","DOIUrl":"https://doi.org/10.1111/1749-4877.12884","url":null,"abstract":"Photoperiod, the length of daylight, has a significant impact on the physiological characteristics of seasonal breeding animals, including their somatic and gonadal development. In rodents, expression of deiodinase type II (Dio2) and III (Dio3) in the hypothalamus is crucial for responding to photoperiodic signals. However, research on the photoperiodism of hypothalamic gene expression and the corresponding regulatory mechanism in Brandt's voles living in the Mongolian steppes is limited. In this study, we gradually changed day length patterns to simulate spring (increasing long photoperiod, ILP) and autumn (decreasing short photoperiod, DSP). We compared the somatic and gonadal development of voles born under ILP and DSP and the expression patterns of five reproduction-related genes in the hypothalamus of young voles. The results showed that DSP significantly inhibited somatic and gonadal development in both female and male offspring. Compared with ILP, Dio3 expression was significantly upregulated in the hypothalamus under DSP conditions and remained elevated until postnatal week 8 in both males and females. However, there was no significant difference in the methylation levels of the proximal promoter region of Dio3 between ILP and DSP, suggesting that methylation in the proximal promoter region may not be involved in regulating the expression of Dio3. These findings suggest that hypothalamic expression of Dio3 plays a key role in the photoperiodic regulation of gonadal activity in Brandt's voles. However, it appears that CpGs methylation in the promoter region is not the main mechanism regulating Dio3 expression.","PeriodicalId":13654,"journal":{"name":"Integrative zoology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142046597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Discovery of thermosensitive Ca²⁺ signals in embryonic turtle gonads. 在胚胎龟性腺中发现热敏 Ca2+ 信号

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-08-14 DOI: 10.1111/1749-4877.12887

Jiameng Li, Yinzi Ye, Weiguo DU, Shilong Yang

引用次数: 0

The water content, apoptosis, and proliferation of the brain in marine medaka affected by seawater acidification. 海水酸化对海鳉大脑含水量、凋亡和增殖的影响

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-07-31 DOI: 10.1111/1749-4877.12872

Jinling Xie, Baolin Li, Tangjian Zhou, Xiaojie Wang

引用次数: 0

Microhabitat and adhesive toepads shape gecko limb morphology. 微生境和粘性趾垫塑造了壁虎的肢体形态。

IF 3.5 1区生物学

Integrative zoology Pub Date : 2024-07-31 DOI: 10.1111/1749-4877.12880

Anna Zimin, Sean V Zimin, L Lee Grismer, Aaron M Bauer, David G Chapple, Jacob Dembitzer, Uri Roll, Shai Meiri

{"title":"Microhabitat and adhesive toepads shape gecko limb morphology.","authors":"Anna Zimin, Sean V Zimin, L Lee Grismer, Aaron M Bauer, David G Chapple, Jacob Dembitzer, Uri Roll, Shai Meiri","doi":"10.1111/1749-4877.12880","DOIUrl":"https://doi.org/10.1111/1749-4877.12880","url":null,"abstract":"Different substrates pose varied biomechanical challenges that select specific morphologies, such as long limbs for faster running and short limbs for balanced posture while climbing narrow substrates. We tested how gecko locomotion is affected by the microhabitat they occupy and by a key adaptation-adhesive toepads-through analyzing how those are related to limb morphology. We collected microhabitat and toepads data for over 90% of limbed gecko species, and limb measurements for 403 species from 83 of the 121 limbed gecko genera, which we then used in phylogenetic comparative analyses. Our data highlight the association of adhesive toepads with arboreality, but a phylogenetic analysis shows that this relationship is not significant, suggesting that these traits are phylogenetically constrained. Comparative analyses reveal that pad-bearing species possess shorter hindlimbs and feet, more even limb lengths, and lower crus: thigh ratios, than padless geckos, across microhabitats. Saxicolous geckos have the longest limbs and limb segments. This is probably influenced by selection for long strides, increased takeoff velocity, and static stability on inclined surfaces. Terrestrial geckos have more even hind- and forelimbs than arboreal geckos, unlike patterns found in other lizards. Our findings underline the difficulty to infer on microhabitat-morphology relationships from one taxon to another, given their differing ecologies and evolutionary pathways. We emphasize the importance of key innovation traits, such as adhesive toepads, in shaping limb morphology in geckos and, accordingly, their locomotion within their immediate environment.","PeriodicalId":13654,"journal":{"name":"Integrative zoology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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