Pigmentation polymorphism of <i>Dikerogammarus villosus</i> (Amphipoda, Crustacea) from the Kuban River, Caucasus DOI

D. N. Skafar,

N. N. Givlyud

Зоологический журнал, Journal Year: 2024, Volume and Issue: 103(7), P. 23 - 32

Published: July 15, 2024

The purpose of this work was to determine the number morphs and their ratio in population Dikerogammarus villosus from Kuban River, as well establish color indicators total hemocytes each morph. Amphipods were caught for study vicinity city Krasnodar at confluence Lake Staraya with River 2023 2024. analysis carried out using Adobe Photoshop (CIELab) GIMP software. determined after acclimation individuals laboratory conditions, which performed three days. In D. found be characterized by 4 types pigment distribution: spotted or patterned (S), homogeneous pigmentation – melanin (M), dorsal stripes (B) amber (A). Based on this, we identified four morphs. At same time, stripes, two sub–morphs: B1 wide along entire pereon, B2 thin stripes. (%) follows: B 72.1, S 16.0, M 7.7, A 3.3, T 0.9. There no differences indices between morphs, but statistically significant morph other brightness, 1.5 times darker compared (p 0.005). widely ranged 2480 9020 pcs/ml, averaging 4858 ± 1684 pcs/ml. No correlations size established 0.05). also males females Hematological variations five not either = 0.36). Thus, first amphipod species plain part lower reaches determined. Data are presented.

Language: Английский

Let's include the ladies: Do morphology-performance relationships vary between sexes in lizards? DOI Creative Commons
Alyssa Head, Princeton L. Vaughn, Ethan H. Livingston

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(18)

Published: Aug. 19, 2024

An animal's morphology influences its ability to perform essential tasks, such as locomoting obtain prey or escape predators. While morphology-performance relationships are well-studied in lizards, most conclusions have been based only on male study subjects, leaving unanswered questions about females. Sex-specific differences important understand because females carry the bulk of physiological demands reproduction. Consequently, their health and survival can determine fate population a whole. To address this knowledge gap, we sampled introduced populations common wall lizards (Podarcis muralis) Ohio, USA. We measured complete suite limb body dimensions both males females, sprint speeds while following straight curved paths different substrates. Using multivariate statistical approach, identified that relative snout-to-vent length were much larger compared with P. muralis changed over time sexes. found speed along increased size When paths, similarly increased; conversely, female decreased increased. Female was also less variation than affected by changes hindfoot males. This thus provides insights into how selective pressures might shape differently functional implications sexual dimorphism.

Language: Английский

Citations

3
Cellular and Molecular Basis of Environment-Induced Color Change in a Tree Frog DOI Creative Commons

Runliang Zhai,

Liming Chang, Jianping Jiang

et al.

Animals, Journal Year: 2024, Volume and Issue: 14(23), P. 3472 - 3472

Published: Dec. 1, 2024

Background color matching is essential for camouflage and thermoregulation in ectothermic vertebrates, yet several key cellular-level questions remain unresolved. For instance, it unclear whether the number of chromatophores or activity individual plays a more critical role this process. Using single-cell RNA sequencing (scRNA-seq), we investigated cellular molecular mechanisms underlying change

Language: Английский

Citations

0
Pigmentation polymorphism of <i>Dikerogammarus villosus</i> (Amphipoda, Crustacea) from the Kuban River, Caucasus DOI

D. N. Skafar,

N. N. Givlyud

Зоологический журнал, Journal Year: 2024, Volume and Issue: 103(7), P. 23 - 32

Published: July 15, 2024

The purpose of this work was to determine the number morphs and their ratio in population Dikerogammarus villosus from Kuban River, as well establish color indicators total hemocytes each morph. Amphipods were caught for study vicinity city Krasnodar at confluence Lake Staraya with River 2023 2024. analysis carried out using Adobe Photoshop (CIELab) GIMP software. determined after acclimation individuals laboratory conditions, which performed three days. In D. found be characterized by 4 types pigment distribution: spotted or patterned (S), homogeneous pigmentation – melanin (M), dorsal stripes (B) amber (A). Based on this, we identified four morphs. At same time, stripes, two sub–morphs: B1 wide along entire pereon, B2 thin stripes. (%) follows: B 72.1, S 16.0, M 7.7, A 3.3, T 0.9. There no differences indices between morphs, but statistically significant morph other brightness, 1.5 times darker compared (p 0.005). widely ranged 2480 9020 pcs/ml, averaging 4858 ± 1684 pcs/ml. No correlations size established 0.05). also males females Hematological variations five not either = 0.36). Thus, first amphipod species plain part lower reaches determined. Data are presented.

Language: Английский

Citations

0