SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Ross, Arnold; Newman, William A..

The coral-eating barnacle Hoekia monticulariae (Gray, 1831), the only internal parasite among the Thoracica described to this day, is characterized by an irregularly-shaped shell nestled cryptically between the polyps of the hermatypic coral Hydnophora Fischer, 1807, which occurs throughout most of the Indo-West Pacific. Because of its protean form, cirripedologists have failed to appreciate the diversity of taxa related to Hoekia, , a presumed monotypic genus. We describe seven new species divided between Hoekia and three new genera, Eohoekia, Parahoekia, and Ahoekia for which the Tribe Hoekiini is proposed. As in other pyrgomatids, calcareous overgrowth by the coral is inhibited around the edge of the wall and aperture. But in Hoekiini a pseudopolyp,...

Allometry and ontogeny in Callibia diana Stål (Mantodea: Acanthopidae)

Palavras-chave: Cirripedia; Pyrgomatidae; Hoekia; Coral-eating barnacles; New species; Parasitism; Functional morphology.

Ano: 1995

URL: http://www.repository.naturalis.nl/record/504389

Neotropical Entomology

Avendaño,J; Sarmiento,CE.

The life-cycle of Callibia diana Stål is described and linear and geometric morphometrics are used for studying allometrics and shape changes throughout this neotropical mantid species' life-cycle. Significant changes were expected in the allometry and shape of the raptorial leg and abdomen, given the importance of hunting and reproduction. The allometric slopes were obtained by using total length as the independent variable. Geometric morphometrics of landmarks were used for frontal femur and tibia. Hunting and reproduction-related structures had the steepest slopes and positive allometries. Negative growth of both disc width and head width found in the last moulting event may be a consequence of prothoracic muscle growth which is responsible for...

Contributions to the study of the comparative morphology of teeth and other relevant ichthyodorulites in living supra-specific taxa of Chondrichthyan fishes. Part B. Batomorphii: 1c. Order Rajiformes - Suborder Rajoidei - Family: Rajidae - Genera and Subgenera: Arhynchobatis, Bathyraja richardsoni-type, Cruriraja, Irolita, Notoraja, Pavoraja (Insentiraja), Pavoraja (Pavoraja), Pseudoraja, Raja (Atlantoraja), Raja (Okamejei) and Rhinoraja

Palavras-chave: Raptorial leg; Resource allocation; Geometric morphometrics; Hunting strategy; Functional morphology.

Ano: 2011

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000400009

OMA

Herman, J.; Hovestadt-Euler, M.; Hovestadt, D.C.; Stehmann, M..

Part B, Nos. 1a and 1b of this series, comprising of the Batomorphii the first and the second sections on the Rajoidei, is continued with the last group of rajoid taxa as far as material was available. The tooth morphology of representatives of eleven more genera and subgenera, namely Arhynchobatis, Bathyraja richardsoni-type, Cruriraja, Irolita, Notoraja, Pavoraja (Insentiraja), Pavoraja (Pavoraja), Pseudoraja, Raja (Atlantoraja), Raja (Okamejei) and Rhinoraja, is described and illustrated by SEM-photographs. Differential diagnoses and systematic interpretations are presented as a result of the odontological examinations described here and in the previous two issues 1a and 1b for the supraspefic taxa of the Rajoidei.

Defensive enrolment in mantis shrimp larvae (Malacostraca: Stomatopoda)

Palavras-chave: Functional morphology; Marine fish; Taxonomy; Teeth; Rajiformes.

Ano: 1996

URL: http://www.vliz.be/imisdocs/publications/294448.pdf

Haug, C.; Haug, J.T..

We describe a possible new defensive behaviour of larval stages of mantis shrimps (Stomatopoda). Mantis shrimp larvae are rarely observed in nature, thus the study is based on postures of museum material and functional morphological aspects. Specimens described here are tightly enrolled, their pleon is bent forward,and the telson is locked into the frontal margin of the shield. This margin has two lobes into which the two posterolateral spines of the telson fit. The shield shows further adaptions to enrolment; e.g., the ventral gape of the shield perfectly matches the width of the pleon and leaves no major gaps when the pleon is bent forward. Based on these observations, we briefly discuss the possibilities to infer behavioural aspects from functional...

Estructura del aparato reproductor masculino de Uca uruguayensis (Decapoda, Ocypodidae)

Palavras-chave: Defensive behaviour; Functional morphology; Marine larvae; Museum material; 42.74.

Ano: 2014

URL: http://www.repository.naturalis.nl/record/480045

Iheringia, Sér. Zool.

Cuartas,Elena Irene; Petriella,Ana María.

The structure of the male reproductive tract was described in Uca uruguayensis Nobili, 1901, by using histological methods, scanning electron microscopy techniques, and stereoscopic observations of fresh material. The aim of this work was to establish the functional changes associated with sexual maturation. The morphology of the first (G1) and second (G2) pair of gonopods was described. The male reproductive tract consists of paired organs: testes, and tubular and convoluted vas deferens (VD) ending with a terminal ampoule (TA).The (VD) is composed of three parts: anterior (AVD), medial (MVD) and posterior (PVD). The AVD and MVD are lined by a single layer of cubical cells. The PVD epithelial cells are columnar with elongated nuclei. The terminal ampoule...

External morphology of Cotesia flavipes (Hymenoptera: Braconidae) during larval development

Palavras-chave: Male reproductive tract; Functional morphology; Crustacea; Brachyura.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000100008

Rev. Bras. Zool.

Pinheiro,Daniela O.; Rossi,Guilherme D.; Cônsoli,Fernando L..

Cotesia flavipes (Cameron, 1891) (Hymenoptera) is a gregarious endoparasitoid used in applied biological control against Diatraea saccharalis (Fabricius, 1794) (Lepidoptera). In this study, we characterize the larval external morphology and the number of instars of C. flavipes. Parasitized larvae of D. saccharalis were sampled from the 1st to the 10th day after parasitism and dissected in an anticoagulant buffer for collection of C. flavipes immatures. Immatures were processed for scanning electron microscopy. Larvae of C. flavipes were prepared in NaOH solution and slide mounted to allow for mandible size measurements. Analysis of measurements of the parasitoid larval mandible size indicated that C. flavipes has three instars. Newly hatched larvae are...

Functional morphology and fur patterns in Recent and fossil Panthera species

Palavras-chave: Anal vesicle; Biological control; Functional morphology; Ultrastructure.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600022

Nagel, D.; Hilsberg, S.; Benesch, A.; Scholz, J..

According to caves drawings, male specimens of ice age cave lions lacked a mane. Ethological observations of the recent subspecies showed the significance of the mane of male lions (Panthera leo) in intraspecific social interaction. For the Pleistocene lion, there are two possible implications; the social system was different from the modern subspecies or the cooler climate did not allow the development of manes. Whereas the former can only be discussed, the latter is supported by evidence based on infrared thermography and considerations on thermoregulation. Thermal images of the recent subspecies clearly demonstrate the significance of mane development in terms of functional morphology. Probably, manes in felids can develop in warm climate only. The mane...

Geometric morphometric analysis of cyclical body shape changes in color pattern variants of Cichla temensis Humboldt, 1821 (Perciformes: Cichlidae) demonstrates reproductive energy allocation

Palavras-chave: Cave lion; Fur pattern; Functional morphology; Pleistocene; 42.84; 38.22.

Ano: 2003

URL: http://www.repository.naturalis.nl/record/219302

Neotropical Ichthyology

Reiss,Paul; Grothues,Thomas M..

Previously recognized color and pattern variants of adult Cichla temensis in Amazon flood pulse river environments reflect the cycling of individuals through seasonal sexual maturity and spawning. Individuals also vary in shape from blocky to fusiform. To determine if shape differences are related to patterns of fat reserve deposition and utilization, and to quantify the relationship of shape with color and pattern variation and life history status, specimens in each of four previously defined grades of color and pattern variation were compared using geometric morphometric techniques. Progressive shape changes occurred between grades independent of sex and correlated to gonosomatic index (GSI). Thin plate spline deformation visualizations indicate that the...

Hindlimb musculature and function of Neuquensaurus australis (Sauropoda: Titanosauria)

Palavras-chave: Fat reserves; Functional morphology; Gonadosomatic index; Hepatosomatic index; Physiology.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100103

Ameghiniana

Otero,Alejandro; Vizcaíno,Sergio F..

We present the reconstruction of the hindlimb musculature of the titanosaur sauropod Neuquensaurus australis (Lydekker), integrating data from crocodilians and birds as a phylogenetic bracket. First, we evaluate sites of origin and insertions in N. australis by comparison with extant archosaurs as well as with previous works on dinosaur soft anatomy, and reconstruct principal muscles of the leg, such as Triceps femoris group, M. iliofibularis, Mm. adductores femores, Mm. gastrocnemii, M. ischiotrochantericus and Mm. caudofemorales. Second, we infer the probable function of each muscle comparing with our bracket taxa and with living analogs, principally mammals, because they are thought to be the best model to understand non-avian dinosaur locomotion. This...

URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142008000200007

Palavras-chave: Archosauria; Extant Phylogenetic Bracket; Soft tissue; Functional morphology.

Ano: 2008

Locomotory behaviour and functional morphology of Nematostella vectensis (Anthozoa: Actiniaria: Edwardsiidae): a contribution to a comparative study of burrowing behaviour in athenarian sea anemones

Williams, R.B..

The locomotory behaviour and functional morphology of English populations of a small (<2 cm long), burrowing athenarian sea anemone, Nematostella vectensis Stephenson, 1935 (= N. pellucida Crowell, 1946), which lives in soft mud in salt marshes and creeks, are described. Objectives were to ascertain the specific stimuli and environmental conditions determining when and how locomotion is employed, and to assess survival values. Experimentation and anatomical examination revealed how anemones move, and their functional morphology was interpreted in a physiological context. Finally, locomotion, morphology and habitat were compared for several athenarian anemones, to ascertain what correlations there are, if any. Essential environmental conditions for N....

Mecistocephalidae), with the description of a new species with unusually elongate denticles

Palavras-chave: Behaviour; Burrowing; Climbing; Creeping; England; Functional morphology; Locomotion; Musculature; Nematostella vectensis; Rugae; Sea anemones; 42.79.

Ano: 2003

URL: http://www.repository.naturalis.nl/record/220581

Bonato, L.; Minelli, A..

As a contribution to investigate the interspecific diversity in the large genus Mecistocephalus Newport, 1843 with respect to these centipedes’ predatorial role in soil tropical communities, we compared the patterns of maxillipede denticles in 32 species of the genus, and studied all published relevant information. All Mecistocephalus species share a conservative pattern of six distinct denticles on the mesal side of the four articles of each maxillipede. Current views on centipede phylogeny suggest that the basic pattern in Mecistocephalus originated from an ancestral array of fewer denticles, by addition of other denticles on the first and fourth articles of the maxillipede. These patterns are not affected by sexual dimorphism, and intraspecific...