Biological associations of color variation in the Indo-Pacific swimming crab Charybdis hellerii
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چکیده
منابع مشابه
Biological associations of color variation in the Indo-Pacific swimming crab Charybdis hellerii.
A marine biological invasion is a natural process accelerated by human activities, and the crab Charybdis hellerii is an example of a globally widespread invasive species. This study evaluated color variation in C. hellerii and its relationship to the sex, size and sexual maturity of these crabs, and compared the efficiency of a freeware digital image-editing program with a commercially availab...
متن کاملReproductive biology of swimming crab, Charybdis hellerii (A. Milne-Edwards, 1867) in coastal waters of the Persian Gulf (Hormuzgan province)
This study was conducted to determine some aspects of reproductive biology of the Indo-Pacific swimming crab, Charybdis hellerii (A. Milne-Edwards, 1867) in coastal waters of the Persian Gulf (Hormozgan province) from June 2015 to May 2016. The results showed that the annual sex ratio is F: M=1:1.3, with 57.4 % males. All the five stages of ovarian development of C. hellerii were observed throu...
متن کاملRelative abundance and population biology of the non-indigenous crab Charybdis hellerii (Crustacea: Brachyura: Portunidae) in a southwestern Atlantic estuary-bay complex
Invasive species are potential threats to biodiversity, especially if they become established and outnumber native species. In this study, a population of the non-indigenous crab Charybdis hellerii was analyzed in an estuary-bay complex on the southeastern Brazilian coast, with respect to its abundance relative to sympatric native brachyuran species, as well as the size structure, sexual maturi...
متن کاملVariability of the Indo-Pacific Ocean exchanges
The ECCO–GODAE global estimate of the ocean circulation 1992–2007 is analyzed in the region of the Indonesian Throughflow (ITF), including the Southern Ocean flow south of Australia. General characteristics are an intense month-to-month noise, only weak trends, and an important annual cycle (which is not the focus of attention). Apart from the details of the unresolved flows within the various ...
متن کاملThe invasion of five alien species in the Delta do Parnaíba Environmental Protection Area, Northeastern Brazil.
Marine biological invasions have been regarded as one of the major causes of native biodiversity loss, with shipping and aquaculture being the leading contributors for the introductions of alien species in aquatic ecosystems. In the present study, five aquatic alien species (one mollusk, three crustaceans and one fish species) were detected during dives, shore searches and from the fisheries on...
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ژورنال
عنوان ژورنال: Anais da Academia Brasileira de Ciências
سال: 2015
ISSN: 1678-2690,0001-3765
DOI: 10.1590/0001-3765201520130388