Results 71 to 80 of about 69,368 (333)

Sperm Transfer Under Behavioral and Morphological Constraints in the Orb‐Web Spider Genus Argiope

open access: yesIntegrative Zoology, EarlyView.
The polygamous mating system of the orb‐web spider genus Argiope provides a model to study the evolution of sperm transfer under morphological and behavioral constraints. This helps us to understand how male and female behavioral and morphological reproductive traits influence sperm transfer.
Chathuranga Dharmarathne   +3 more
wiley   +1 more source

UV‐Induced Fluorescence in the Balance: Mate Choice and Predation Risk in the Female Ornamented Jumping Spiders

open access: yesIntegrative Zoology, EarlyView.
This study investigates the potential adaptive advantages of female‐specific UV‐induced fluorescence in male mate‐choice and predation risk, as fitness costs, using two species of ornate jumping spiders Phintella vittata and Ph. bifurcilinea. Our findings provide empirical evidence of a trade‐off: While fluorescence enhances male mate preference, it ...
Yingna Zhou   +4 more
wiley   +1 more source

New record of parasitic isopod (Isopoda: Bopyridae) infecting the branchial chamber of blue swimming crab Portunus pelagicus (Linnaeus, 1758) (Decapoda: Portunidae) in the Philippines

open access: yesJournal of Fisheries, 2020
A parasitic disease causing swollen carapace in commercially important blue swimming crab (Portunus pelagicus L.) has not received considerable attention; neither its causative agent is identified nor its seasonality is recorded.
Marwin B. Dela Cruz   +2 more
doaj  

Carapace shape of some aeglid crabs: plasticity at different levels

open access: yes, 2016
Geometric morphometric techniques were applied for a better comprehension of inter- and intraspecific morphological variability of freshwater aeglid crabs.
R. Metri, A. Oliveira
semanticscholar   +1 more source

Hox Gene Variation Drives Morphological Specialization of Humpback Grouper Cromileptes altivelis

open access: yesIntegrative Zoology, EarlyView.
Cromileptes altivelis exhibits a distinctive “sunken head and humpback” morphology, formed through cranial remodeling. Genetic analyses identified unique amino acid variants in Hoxa7a and Hoxa10b, with functional tests confirming their role in enhancing osteoblast activity and driving cranial remodeling.
Xiaoying Cao   +4 more
wiley   +1 more source

Extreme Silk Toughness in Caerostris Spiders Is Limited to Adult Females

open access: yesIntegrative Zoology, EarlyView.
We ask whether species with exceptionally tough silk, like Caerostris bark spiders, show different developmental patterns in silk toughness between ontogenetic stages and sexes. We found that only large females produce exceptionally tough silk with higher initial stiffness, while juvenile females as well as adult and juvenile males produce inferior ...
Matjaž Gregorič   +4 more
wiley   +1 more source

Mercury and methylmercury in carapace of the marine turtle Caretta caretta, in northeastern Brazil and its potential for environmental monitoring

open access: yesAnais da Academia Brasileira de Ciências
: The present work tests the use of carapace fragments of the marine turtle Caretta caretta as a tool for environmental biomonitoring of mercury (Hg) and to evaluate the influence of biological and ecological factors in Hg concentrations.
CÉSAR AUGUSTO B. RODRIGUEZ   +4 more
doaj   +1 more source

Scales, Skins, and Carapaces in Antwerp Collections

open access: yes, 2023
This chapter discusses the interest in aquatic fauna in seventeenth-century Antwerp in relation to mimetic practices. It investigates how aquatic animals were preserved and displayed, how they were related to other types of representations (images and other objects), and why they were appreciated.
openaire   +3 more sources

Keys to families of Cladocera and to subfamilies, genera, species and subspecies of Macrothricidae and Moinidae [Translation from: Leningrad, Fauna SSSR, Crustacea 1 (3), 1971] [PDF]

open access: yes, 1977
Identification keys to families of Cladocera and to subfamilies, genera, species and subspecies of Macrothricidae and Moinidae are given.
Smirnov, N.N.
core  

First Zoeal Stage of the Snapping Shrimp Alpheus Fabricius, 1798 (Caridea: Alpheidae): New Description of Alpheus bouvieri A. Milne‐Edwards, 1878 and Literature Review

open access: yesActa Zoologica, EarlyView.
ABSTRACT Based on adult morphological characters, the more than 300 species of Alpheus were divided into seven informal species groups, but some groups are not supported by molecular data. The aim here was to describe the zoea I of Alpheus bouvieri, and to do a review of the larval descriptions available in the literature, analysing whether the ...
Karmine Pasinatto   +2 more
wiley   +1 more source

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