2017年3月5日 · Each species of the squids has got its own characteristic patterns and to accurately classify the squids. In this paper we extracted the morphometric features of the squids using image processing...

2025年2月1日 · Squids have elongated tubular bodies and short compact heads. Two of the 10 arms have developed into long slender tentacles with expanded ends and four rows of suckers with toothed, horny rings. The body of most squids is strengthened by a feathery-shaped internal shell composed of a horny material.

In this article we will discuss about the structure of Squid (Loligo) with the help of a diagram. 1. It is a marine mollusc commonly called squid. 2. Body is long, slender, pigmented and tapering behind. 3. A fin is present along its postero-lateral edges. 4. The shell is internal, feather-like and membranous. 5.

2025年1月2日 · The ratio of arm to tentacle length varies among squid species. Deep-sea squids often have very long tentacles, while in other species, the tentacles are only slightly longer than the arms. ... (1982). The functional morphology of the musculature of squid (Loliginidae) arms and tentacles. Journal of Morphology, 172(2), 179-192. Kier, W. M ...

2019年3月9日 · Figure 6 depicts the beaks, hooks, sucker rings and general body morphology of some interesting squid (genera Octopoteuthis, Moroteuthis and Lepidoteuthis). Beak shape, and arm and tentacle hook and sucker ring morphology are enormously variable, and are some of the most important characters that are used to identify species.

2019年5月7日 · Anatomy and Morphology. Loligo vulgaris can be described as a slender and elongated squid with rhomboid-shaped fins that cover two thirds of the mantle . Their colour can be greyish or reddish.

2018年3月1日 · This analysis was performed using a robust molecular phylogeny with three mitochondrial genes (COI, CYTB and 16S) and two nuclear genes (RHO and 18S) for nearly all species of ommastrephid squid. Our results support dividing the Ommastrephidae into the three traditional subfamilies, plus the monotypic subfamily Todaropsinae as proposed previously.

A simplified account of squid morphology (fig.1) shows differences between squids based on their morphometric measurements for classifying the species. In the first step resizing, rgb to gray scale conversion and noise removal is done. Then the second step is cropping the certain features of squid like mantle, head and fin by using ROI.

2021年2月23日 · In this study, in order to investigate the change patterns of body size and beak shape under different environment conditions, we selected squid samples from different climatic years and statistically compared the interannual body size change and beak shape difference according to GM method for the analysis of beak morphology.

The Journal of Morphology publishes research in cytology, protozoology, embryology, and general animal morphology in vertebrates and invertebrates. Abstract The arms and tentacles of squid (Family Loliginidae: Sepioteuthis sepioidea (Blainville), Loligo pealei (LeSueur), Loligo plei (Blainville), Loliguncula brevis (Blainville)) do not possess...