Morphological Characterization of First Instar Larvae of Asian Horseshoe Crabs and their Hybrids*: (horseshoe crabs/interspecific hybrids/larvae)
Abstract
The morphological characters of first instar larvae of three Asian horseshoe crabs and their hybrids were examined. For this purpose, the length of six parts on the larvae, the pattern of pigmentation, the structure of the margin of the opisthosoma, and the distribution and shape of spines on the extracardiac region of the prosoma were recorded. In general, the phenotypes of the hybrids were intermediate between those of the parents, suggesting that both male and female genomes contribute to development of the hybrids. However, there were some exceptional characters and phenotypic variations. Some characters were inherited from only one parent. This was suggested to imply that if the maternal species did not have the gene regulating expression of a given paternal character, the paternal gene did not express this character.
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Increased pigmentation as larvae near ecdysis is a common behaviour of horseshoe crab that takes place during premoult phases due to the increase of folded cuticle composition within the old cuticle.
“Increased pigmentation as the larvae is nearing ecdysis is known as the same common behaviours of horseshoe crab (Yamamichi et al., 1983; Skinner, 1985; Ewer & Truman, 1996) that takes place during premoult phases due to the increase of folded cuticle composition within the old cuticle.”
From HORSESHOE CRAB AND ITS SPAWNING GROUND CONDITION IN JOHOR LAMA, JOHOR (2022) · cites this paper as Yamamichi et al., 1983
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HORSESHOE CRAB AND ITS SPAWNING GROUND CONDITION IN JOHOR LAMA, JOHOR
Md Razak, M. R., Kassim, Z., Abd Wahab, R., & Hazahari, N. Y. (2022) · Malaysian Journal of Science · doi:10.22452/mjs.vol41no1.1 · Cited by 4 · see citing works
- Authors
- YAMAMICHI, Y., SUGITA, H., & SEKIGUCHI, K.
- Affiliations
- University of Tsukuba (JP)
- ORCID
- SUGITA, HIROAKI
- Venue
- Development, Growth & Differentiation
- Publisher
- Wiley
- Published
- 1983-01
- Volume
- 25
- Issue
- 3
- Pages
- 271-280
- ISSN
- 0012-1592 (ISSN-L)
- 1440-169X
- OpenAlex
- W1541735106
- Cited by
- 1
- References
- 0
- Citations by year
- 2021: 1
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Development Growth & Differentiation (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Ecology › Crustacean biology and ecology
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Invertebrate Taxonomy and Ecology
- Physical Sciences › Mathematics › Geometry and Topology › Morphological variations and asymmetry
- Keywords
- horseshoe crab, Limulus, first instar larvae, hybridization, interspecific hybrids, larval morphology, opisthosoma, pigmentation patterns, maternal inheritance, paternal gene expression, phenotypic variability
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